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
  • F16H—GEARING
  • F16H1/00—Toothed gearings for conveying rotary motion
  • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
  • F16H1/34—Toothed gearings for conveying rotary motion with gears having orbital motion involving gears essentially having intermeshing elements other than involute or cycloidal teeth
• • 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
  • F16H—GEARING
  • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
  • F16H25/04—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying rotary motion
  • F16H25/06—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying rotary motion with intermediate members guided along tracks on both rotary members
• • 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
  • F16C7/02—Constructions of connecting-rods with constant length
  • F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
• • 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

• the present invention relates to a transmitting unit, and more particularly to a
• the transmitting unit mainly uses worm gears or epicyclical trains, and
• the transmitting unit is mainly used for heavy load. Furthermore, the structure of
• the transmitting unit is so complicated that it is hard to install the unit, and an output
• an eccentric sleeve and bearings are rotated to push transmitting rods, when an input shaft is rotated.
• rolling members that are linearly moved in a radial direction on the outer sides of the transmitting rods are moved along the waves of an outer race.
• the structure of the transmitting unit has a disadvantage in that it is complicated and many parts are required to assemble the transmitting unit. Furthermore, the transmitting unit cannot be easily manufactured. Namely, the transmitting unit is rather an ideal unit.
• the present invention has been made to solve the aforementioned problem, and accordingly it is an object of the present invention to provide a transmitting unit that has an integrally formed transmitting race, an integrally formed outer race, and an input shaft in which an eccentric portion is integrally formed therewith, without using a separate eccentric sleeve so as to increase the strength of the unit and minimize the unit. It is another object of the present invention to provide a transmitting unit that is
• the present invention provides a transmitting unit comprising an input shaft driven by a driving device; a sleeve driven together with the input shaft when the input shaft is driven and having a first concentric portion, a second concentric portion, and an
• eccentric portion a first bearing assembled along the outer periphery of the first concentric portion; a second bearing assembled along the outer periphery of the second concentric portion; a third bearing assembled along the outer periphery of the eccentric portion and strangely enough moving when the input shaft is driven; an integrally formed transmitting race having a first flange surrounding the outer periphery of the first bearing, a second flange surrounding the outer periphery of the second bearing, and a third flange surrounding the outer periphery of the third bearing and integrally formed with the first and second flanges, the third flange having a plurality of radial holes spaced apart at a predetermined distance; the same plurality of transmitting rods respectively inserted into the radial holes of the third flange of the transmitting race; an integrally formed outer race located out of the transmitting race and having a plurality of wave grooves on the inner periphery thereof; and the same plurality of balls respectively provided between the transmitting rods and the wave grooves of the outer
• the sleeve is integrally formed
• the transmitting rod has a circular cross-section.
• a semi-spherical recess is formed on one side of each transmitting
• the same plurality of rollers are respectively provided between the same plurality of rollers.
• a pair of fourth bearings is provided between the outer race and the
• FIG. 1 is an exploded perspective view showing a transmitting unit according to a
• FIG. 2 is a cross-sectional view showing the transmitting unit according to the
• FIG. 3 is a cross-sectional view that is taken along the line A-A of FIG. 2.
• FIG. 1 is an exploded perspective view showing a transmitting unit according to a preferred embodiment of the present invention.
• FIG. 2 is a cross-sectional view for showing the transmitting unit according to the preferred embodiment of the present
• FIG. 3 is a cross-sectional view that is taken along the line A-A of FIG. 2.
• a transmitting unit according to a preferred embodiment of the present invention includes an input shaft 110 driven by a driving device 100, a transmitting race 130, and an outer race 150.
• the input shaft 110 has a conventional key groove 112, and as shown in FIG. 2, the driving device 100 is assembled to the input shaft 10 by a key (not shown).
• a sleeve 120 is integrally formed with the input shaft 110, and has a first concentric portion 122, a second concentric portion 124, and an eccentric portion 126. As shown in FIG. 1 , the first and second concentric portions 122 and 124 and the eccentric portion 126 are integrally formed.
• the sleeve 120 is integrally formed with the input shaft 110 as in the present invention, a separate sleeve is not needed. Thus, the number of parts of the unit is decreased and the unit can be minimized.
• a first bearing 142 is assembled along the outer periphery of the first concentric portion 122, and a second bearing 144 is assembled along the outer periphery of the second concentric portion 124. And, a third bearing 146 is assembled along the outer
• the first and second bearings 142 and 144 support the third bearing 146
• the third bearing 146 is eccentrically moved when the input shaft 100 is driven.
• ball bearings are used as the first to third
• bearings 142, 144, and 146 in a transmitting unit for light load, and ball bearing are
• first and second bearings 142 and 144 and a roller bearing is used as the first and second bearings 142 and 144 and a roller bearing is used as the first and second bearings 142 and 144 and a roller bearing is used as the first and second bearings 142 and 144 and a roller bearing is used as the first and second bearings 142 and 144 and a roller bearing is used as the first and second bearings 142 and 144 and a roller bearing is used as the
• roller bearings may be used
• first to third bearings 142, 144, and 146 are illustrated as the first to third bearings 142, 144, and 146.
• the integrally formed transmitting race 130 is installed on the outer peripheries
• the transmitting race 130 has a first
• flange 132 a second flange 134, and a third flange 136.
• the transmitting race 130 is integrally formed.
• the first flange 132 surrounds the outer periphery of the first bearing 142, and
• the second flange 134 surrounds the outer periphery of the second bearing 144.
• third flange 136 surrounds the third bearing, and is integrally formed with the first and
• the third flange 136 has a plurality of
• Transmitting rods 140 are inserted into the radial holes 137 of the third flange
• the transmitting rods 140 are movable in
• a plurality of engagement holes 135 are formed on the front
• the outer race 150 surrounds the outer periphery of the transmitting race 130, and has a plurality of wave grooves 152 on the inner periphery thereof, as shown in FIG.
• grooves 152 are disposed in a row, but may be disposed in a pair of rows.
• Balls 160 are provided between the transmitting rods 140 and the wave grooves
• each transmitting rod 140 is formed on one side of each transmitting rod 140 so that the corresponding ball 160 is
• the balls 160 roll between the transmitting
• the wave groove 152 is designed such that the balls 160 make surface contact
• Rollers 147 are provided between the third bearing 146 and the transmitting rods
• each transmitting rod 140 respectively, a groove 145 is formed on one side of each transmitting rod 140 so
• the outer race 150 is integrally formed, and a pair of fourth bearings 170 are
• the fourth bearings 170 are assembled around the first and second flanges 132 and
• ball bearings are used as the fourth bearings 170.
• the fourth bearings 170 support the loads of the transmitting race 130 during the transmission on both sides of the transmitting race 130, and thus minimize the deformation of the input shaft 110. Therefore, the precision of the assembly maintained even during the operation of the unit, and the vibration and the noise are minimized.
• the driving force is transferred to the input shaft 110 from the driving device 100.
• the rotational force is transferred to the first to third bearings 142, 144, and 146.
• the third bearing 146 is eccentrically rotated, and thus the transmitting rods 146 are reciprocated in the holes 137.
• each transmitting rod 140 rolls along the wave groove 152 of the outer race 150, and simultaneously the transmitting rod 140 rotates the transmitting race 130.
• the transmitting rods are symmetrical with reference to the central point of the input shaft 110, as shown in FIG. 3, when the ball 160 of the transmitting rod 140 which is located on the upper side of the unit is located at a highest point 152A of the wave groove 152, the ball 160 of the transmitting rod 140 which is located on the lower side of the unit is located at a lowest point 152B of the wave groove 152.
• the output shaft (not shown) assembled to the transmitting race 130 is rotated at a reduced rotational speed.
• the transmitting unit based on the present invention has an
• the life of the unit becomes prolonged, and the strength of the unit is maintained. Since the number of parts becomes remarkably reduced, the manufacturing cost of the unit could be reduced.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Retarders (AREA)
• Transmission Devices (AREA)
• Friction Gearing (AREA)
• Rolling Contact Bearings (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19575866

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (5)

Citations (5)

Family Cites Families (3)

• 1999
  • 1999-04-30 KR KR2019990007601U patent/KR200208549Y1/ko active IP Right Grant
• 2000
  • 2000-04-26 JP JP2000615513A patent/JP3698990B2/ja not_active Expired - Fee Related
  • 2000-04-26 WO PCT/KR2000/000395 patent/WO2000066912A1/en active Application Filing
  • 2000-04-26 AU AU44350/00A patent/AU4435000A/en not_active Abandoned
  • 2000-04-26 CA CA002343745A patent/CA2343745C/en not_active Expired - Fee Related
  • 2000-04-26 DE DE10081339T patent/DE10081339B4/de not_active Expired - Fee Related

Patent Citations (5)

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