Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
  • F16C9/04—Connecting-rod bearings; Attachments thereof

Definitions

• This invention relates to automobiles, specifically to improved connecting rod/crankshaft power transmission mechanism so as to secure the maximum of efficiency in rotating a crankshaft with the minimum of engine power.
• a conventional connecting rod/crankshaft power transmission mechanism consisted of several connecting rods and a crankshaft, the big ends of the connecting rods simply rotatably mounting on the crankpins of the crankshaft so that expansion strokes may cause the connecting rods to push the crankpins anyway to rotate the crankshaft.
• Each big end comprises a half-annular main body, another half-annular bearing cap being fixed to the main body by cap bolts and nuts with a crankpin in, a round plain bearing housing being formed inside for holding the crankpin, while the crankshaft comprises a crank journal, balance weights, crankarms, and round crankpins being just rotatably mounted on by the big ends.
• crankshaft revolution of a crankshaft by this method requires much stronger, more frequent expasnion strokes than that by pushing the crankpin toward a rismide (the open end of the radius sidewise) of the crankshaft and brings about successive impacts of the big ends upon the crankpins, crankarms, and the crank journal, resulting in bend, twists, vibrations, noises, quick wearing, energy waste, and increased gas emissions.
• This invention contemplates providing a means of causing the big end to dash eccentrically toward a rimside of the crankshaft in an expansion stroke at the top dead center so as to push in a forward, rotational direction the open end of the radius of the crankshaft to rotate the crankshaft most efficiently and freely in accordance with the principle of the wheel and the axle and a means of causing the big end to return to the original position for next expansion strokes.
• the improved connecting rod/crankshaft mechanism comprising: connecting rods(1), big ends(3) at one end thereof each comprising a half-annular main body(4); another half-annular bearing cap(5) being fixed to the main body (4) by cap bolts(12) and nuts(13); a round plain bearing housing(6) being formed inside the big end(3);
• crankshaft(2) comprising a crank journal(8)
• balance weights(9), crankarms(10), and round crankpins(11) being rotatably mounted in the plain bearings (7);
• the round plain bearing housing(6) being formed in an inclined, one-side expanded round shape (like oval herein after) inside the big end(3) to provide room for the big end(3) to keep the crankpin(1l) to a lower
• portion(20) of the oval plain bearing housing(6) normally and to make a little inclined reciprocating slidings, to an upper portion(19), on the round crankpin(11) eccentrically in a forward, rotational direction in expansion strokes;
• multi-fold, flat spring(14) being formed in a shape; multi-fold, flat spring block(15) in a I shape for securely supporting the plain bearings (7) and
• a multi-fold, flat spring housing(16) being formed in the upper portion(19) with a bolt hole in the center;
• the annular big end(3) being formed as inclined, oval in shape as the inclined, oval plain bearing housing (6) and bigger for fully accommodating the strong multifold flat spring(14) and the flat spring block(15) in the upper portion(19); and the plain bearings(7) in the lower portion(20), of the bearing housing(6) so as to be rigid enough to meet the strong, successive pushings on the flat spring(14) and on the crankpin(11);
• the flat spring(14) being put into the flat spring housing(16) and fixed to the upper portion(19) by a bolt (17) and a nut(18); the flat spring block(15) being tightly placed between the flat spring(14) and the plain bearings(7);
• the multi-fold flat spring(14) comprising elastic means for performing elastic operation to keep the round crankpin(11) to the lower portion(20) of the inclined, oval plain bearing housing(6) until an expansion stroke and to be contracted to permit the big end(3) to make an inclined sliding on the crankpin(11) in a forward, rotational direction in the expansion stroke:
• additive means combined with the inclined, oval plain bearing housing(6) and the multi-fold flat spring (14) for permitting the big end(3) to perform, in expansion strokes, repeated, eccentric pushings on the crank- pin(11) toward a rimside(21) of the crankshaft(2) to rotate the crankshaft(2) most efficiently.
• the improvement may comprise, instead of the multifold flat spring(11), as shown in Fig 5 through Fig 7, another coil spring(22), a coil spring block(23) being formed in a shape, a coil spring housing(24) being formed in a sylindrical hole in the upper portion(19), the coil spring(22) being partly placed into the coil spring housing(24), the ooil spring block(23) being tightly put into the outer end of the coil spring(22) through a sylindrical base(25) of the coil block(23) and coupled to the plain bearings (7) through the arc surface
• the coil spring(22) comprising elastic means for performing elastic operation to keep the round crankpin (11 ) to the lower portion(20) of the inclined, oval plain bearing housing(6) until an expansion stroke and to be contracted to permit the big end(3) to make an inclined sliding on the crankpin(11) in a forward, rotational direction in the expansion stroke;
• additive means combined with the inclined, oval plain bearing housing(6) and the coil spring(22) for permitting the big end(3) to perform, in expansion strokes, repeated, eccentric pushings on the crankpin(11) toward a rimside (21) of the crankshaft(2) to rotate the crankshaft(2) most efficiently.
• crankpin(11) each being protruded from either opposite crankarms(10), with open spaces(36)
• additive means combined together with the inclined, oval plain bearing housing(6), the bearing cap bosses(28), and the cam/driven members(31) for permitting the big end(3) to make inclined slidings toward a rimside(21) of the crankshaft(2) and to push the crankarms(10) through the bearing cap bosses(28) and to return to the starting point through the bearing cap bosses(28) sliding back along the inclined cam section(32) through the open spaces (36) for next expansion strokes.
• the improvement as shown in Fig 12 and Fig 13, further includes half-moon white metals(37) being attached to the half-moon surfaces(34) of the inclined cam/driven members(31) by flat screws(39) through flat screw holes (38) for the efficient smooth slidings of the bearing cap bosses(28).
• the big end of the prior art dashes eccentrically toward a spot still less than one-half of the radius of the crankshaft sidewise at most, based on the resultant of the two different velocities of an expansion stroke and a crankshaft
• this invention may be better than a device which performs just straight pushing on a rim in a rotational direction, because the resultant length of the two different velocities, based on this invention, is longer than the length of the direct, straight pushing velocity of the device toward a rotational direction, since the big end first makes an inclined sliding impact on the revolving crankpin and then jumps further forward with the aid of the rebounding of the spring provided.
• W represents a weight on a string hung over a small pulley or a force to push a rim of a small wheel (one- half radius of a crankshaft); r, a radius of the small pulley (ene-half radius of a crankshaft); F, a force to pull a string hung over a large pulley on an opposite side or a force to push a rim of a large wheel (the full radius of a crankshaft); and R represents a radius of a large pulley (a full radius of a crankshaft).
• Fig 1 shows a side view of a connecting rod/crank- shaft mechanism containing a multi-fold flat spring according to the invention.
• Fig 2 shows a front view of such mechanism.
• Fig 3 shows an exploded view of the big end.
• Fig 4 shows side and front views of the multi-fold flat spring.
• Fig 5 shows a side view of a connecting rod/crankshaft mechanism containing a coil spring and a coil spring block.
• Fig 6 shows an exploded view of the big end including the coil spring housing, the coil spring, and the coil spring block of Fig 5.
• Fig 7 shows a perspective view of the coil spring, and the coil spring block of Fig 5.
• Fig 8 shows a side view of a connecting rod/crank- shaft mechanism including bearing cap bosses and cam/ driven members according to another embodiment of the invention.
• Fig 9 shows a front view of Fig 8 including cam/ driven members on both crankarms.
• Fig 10 shows an exploded view of the big end including inclined, oval plain bearing housing, split, inclined, oval plain bearing, and bearing cap bosses on either side.
• Fig 11 shows a side view of the bearing cap with the bosses.
• Fig 12 shows a perspective view of the crankarm
• Fig 13 shows a perspective view of the cam/driven member and of white metal.
• Fig 1 and Fig 2 show side and front views of an improved connecting rod(1) and of a conventional crankshaft(2) assembled.
• the connecting rod(1) has at one end a big end(3), which comprises an inclined, half- oval main body(4); another half-round bearing cap(5) being fixed to the main body(4) by two cap bolts(12) and two nuts(13); an inclined, oval plain bearing
• crankshaft(2) comprises a crank journal(8), balance weights(9), crankarms(10), and
• crankpins(11) the crankpins(11) being rotatably mounted in the split, round plain bearings (7).
• the inclined, oval plain bearing housing(6) is in such a one-side expanded round shape toward the upper portien(19) that provides a room for the round plain bearings (7) and the round crankpin(11) therein to make a little inclined slidings back and forth and to be disposed normally in the lower portion(20) of, and another room for the multi-fold flat spring(14) in a shape and the multi-fold flat spring block(15) in a shape to be disposed in the upper portion(19) of, the inclined, oval plain bearing housing(6) and to perform elastic operation to facilitate sliding of the big end(3) on the crankpin(11) and keeping the crankpin(11) to the lower portion(20).
• a multi-fold flat spring housing(16) will be formed in the upper portion(19) with a bolt hole in the center.
• the multi-fold flat spring(14) in Fig 1 and Fig 3 will be put partly into the flat spring housing (16) and fixed to the upper .portion(19) by a bolt(17) and a nut(18), and the flat spring block(15) will be tightly placed between the flat spring(14) and the plain bearings(7).

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
• Transmission Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19304953

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (7)

• 1991
  • 1991-10-21 WO PCT/KR1991/000024 patent/WO1992007200A1/en not_active Application Discontinuation
  • 1991-10-21 EP EP91918779A patent/EP0553201A1/en not_active Withdrawn
  • 1991-10-21 JP JP3517760A patent/JPH06509152A/ja active Pending
  • 1991-10-21 KR KR1019910018524A patent/KR920008366A/ko unknown
• 1992
  • 1992-04-17 KR KR1019920006500A patent/KR960010263B1/ko not_active IP Right Cessation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events