The present invention relates to a roller reducer comprising a transmission gear having an externally threaded shaft having at least one left-handed thread portion, at least one right-handed thread portion, and at least one shaft flange ring, and a plurality of rollers, each roller having a pluralit
The present invention relates to a roller reducer comprising a transmission gear having an externally threaded shaft having at least one left-handed thread portion, at least one right-handed thread portion, and at least one shaft flange ring, and a plurality of rollers, each roller having a plurality of thread portions, comprising at least one left-handed thread portion and at least one right-handed thread portion, each thread portion arranged to engage with the respective thread portions of the shaft, and at least one roller flange ring arranged adjacent to the roller thread portions to rotationally slide against the corresponding at least one flange ring of the shaft. Diameters of the flange rings of the rollers and the flange rings of the shaft are each equal to the respective effective thread diameters of the engaged thread portions of the rollers and the shaft, respectively.
대표청구항▼
1. A transmission gear comprising: an externally threaded shaft having at least one left-handed thread portion, at least one right-handed thread portion, and at least one shaft flange ring,a plurality of rollers, each roller having a plurality of thread portions, comprising at least one left-handed
1. A transmission gear comprising: an externally threaded shaft having at least one left-handed thread portion, at least one right-handed thread portion, and at least one shaft flange ring,a plurality of rollers, each roller having a plurality of thread portions, comprising at least one left-handed thread portion and at least one right-handed thread portion, each thread portion arranged to engage with the respective thread portion of the shaft, andat least one roller flange ring arranged adjacent to the at least one roller thread portion to rotationally slide against the corresponding at least one flange ring of the shaft,wherein the diameter of the at least one shaft flange ring is equal to the effective thread diameter of the thread portions of the shaft, andwherein the diameter of the at least one roller flange ring is equal to the effective thread diameters of the thread portions of the roller. 2. The transmission gear according to claim 1, wherein the shaft comprises one left-handed thread portion and one right-handed thread portion, the portions being arranged distally at distal sections of the shaft, andeach roller of the plurality of rollers comprising two pairs of thread portions, wherein one pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller, and the other pair of thread portions comprise one left-handed thread portion and one right-handed thread portion, the thread portions being arranged at distal sections of the roller to engage with said distal thread portions of the shaft, andwherein the at least one shaft flange ring is arranged between said distal thread portions of the shaft to rotationally slide against the respective at least one flange ring of each of the rollers. 3. The transmission gear according to claim 1, wherein the shaft comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the center of the shaft, andeach roller of the plurality of rollers comprising two pairs of thread portions, wherein one pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged at distal sections of the roller, and the other pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller to engage with said proximal thread portions of the shaft, andwherein the shaft has at least two flange rings arranged at distal sections thereof and adjacent to said proximal shaft thread portions to rotationally slide against the respective flange rings of the rollers. 4. The transmission gear according to claim 1, wherein the diameter of the at least one left-handed thread portion of each roller is equal to the diameter of the at least one left-handed thread portions of the shaft, and wherein the diameter of the at least one right-handed thread portion of each roller is equal to the diameter of the at least one right-handed thread portions of the shaft. 5. The transmission gear according to claim 1, wherein the diameter of the at least one left-handed thread portion of each roller is smaller than the diameter of the at least one left-handed thread portions of the shaft, and wherein the diameter of the at least one right-handed thread portion of each roller is smaller than the diameter of the at least one right-handed thread portions of the shaft. 6. The transmission gear according to claim 1, wherein each roller has a plurality of roller flange rings arranged between each two adjacent roller thread portions, and the shaft has a plurality of shaft flange rings corresponding to the roller flange rings. 7. A roller reducer comprising: a first reducer member comprising at least two first reducer member nuts, each having an inner thread portion, and fixedly mounted with respect to each other;a second reducer member comprising at least two second reducer member nuts, each having an inner thread portion, and fixedly mounted with respect to each other;and a transmission gear comprisingan externally threaded shaft having at least one left-handed thread portion, at least one right-handed thread portion, and at least one shaft flange ring, anda plurality of rollers, each roller having a plurality of thread portions, comprising at least one left-handed thread portion and at least one right-handed thread portion, each thread portion arranged to engage with the respective thread portions of the shaft, andat least one roller flange ring arranged adjacent to the roller thread portions to rotationally slide against the corresponding at least one flange ring of the shaft,wherein the diameter of the at least one shaft flange ring is equal to the effective thread diameter of the thread portions of the shaft, andwherein the diameter of the at least one roller flange ring is equal to the effective thread diameters of the thread portions of the roller, andwherein the at least two roller thread portions, which are engaged with the respective shaft thread portions, are arranged to engage with the inner thread portions of one of said member nuts, andthe other of the at least two roller thread portions are engaged with inner nut threads of the other of said members. 8. The roller reducer according to claim 7, wherein the shaft comprises one left-handed thread portion and one right-handed thread portion, the portions being arranged distally at distal sections of the shaft, andeach roller of the plurality of rollers comprising two pairs of thread portions, wherein one pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller, and the other pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged at distal sections of the roller to engage with said distal thread portions of the shaft, andwherein the at least one shaft flange ring is arranged between said left-handed thread portion of the shaft and said right-handed thread portion of the shaft to rotationally slide against the respective at least one flange ring of each of the rollers. 9. The roller reducer according to claim 7, wherein the shaft comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the center of the shaft, andeach roller of the plurality of rollers comprises two pairs of thread portions, wherein one pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller, and the other pair of thread portions comprises one left-handed thread portion and one right-handed thread portion, the thread portions being arranged at distal sections of the roller to engage with said proximal thread portions of the shaft, andwherein the shaft has at least two flange rings arranged at distal sections thereof and adjacent to said proximal shaft thread portions to rotationally slide against the respective flange rings of the rollers. 10. The roller reducer according to claim 7, wherein the diameter of the at least one left-handed thread portion of each roller is equal to the diameter of the at least one left-handed thread portions of the shaft, and wherein the diameter of the at least one right-handed thread portion of each roller is equal to the diameter of the at least one right-handed thread portions of the shaft. 11. The roller reducer according to claim 7, wherein the diameter of the at least one left-handed thread portion of each roller is smaller than the diameter of the at least one left-handed thread portions of the shaft, and wherein the diameter of the at least one right-handed thread portion of each roller is smaller than the diameter of the at least one right-handed thread portions of the shaft. 12. The roller reducer according to claim 7, wherein each roller has a plurality of roller flange rings arranged between each two adjacent roller thread portions, and the shaft has a plurality of shaft flange rings corresponding to the roller flange rings. 13. The roller reducer according to claim 7, wherein the thread portions of each of the nuts, the shaft and the rollers are preloaded. 14. The roller reducer according to claim 7, wherein the shaft is disassemblable and comprises at least two parts, each part comprising at least one thread portion. 15. A method of assembling the roller reducer according to claim 7, comprising the steps of: providing at least one positioning device comprising positioning elements for engaging rollers, said positioning elements configured to block displacement of the rollers with respect to each other when the positioning elements engage with the rollers, wherein each of the positioning elements has a configuration different from configuration of any other of the positioning elements;providing rollers, wherein each of the rollers comprises at least one left-handed thread portion and at least one right-handed read portion, the thread portions being arranged distally at distal sections of the roller, and at least one left-handed thread portion and at least one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller, andwherein each of the rollers comprises a complementary element for engaging the positioning device, said element having a configuration complementary to the configuration of one of the positioning elements in the positioning device;mounting the shaft and the rollers into said at least one positioning device,engaging the roller complementary elements with the positioning elements of corresponding configuration, thus unambiguously positioning the rollers with respect to each other and to the shaft,mounting nuts onto said proximal thread portions of the rollers, providing engagement between said nut threads and said proximal thread portions;mounting nuts onto said distal thread portions of the rollers, providing engagement between said nut threads and said distal thread portions;disengaging the complementary elements of the rollers from the positioning elements;fixedly mounting the first member nuts with respect to each other, and fixedly mounting the second member nuts with respect to each other. 16. A method of assembling the roller reducer according to claim 14, comprising the steps of: providing at least one positioning device comprising positioning elements for engaging rollers, said positioning elements configured in such manner that the rollers can be mounted therein longitudinally with respect to each other along the circumference, and adapted to limit displacement of each of the rollers between an inner radial position and an outer radial position, wherein each of the positioning elements has a configuration different from configuration of any other of the positioning elements;providing rollers, wherein each of the rollers comprises at least one left-handed thread portion and at least one right-handed thread portion, the thread portions being arranged distally at distal sections of the roller, and at least one left-handed thread portion and at least one right-handed thread portion, the thread portions being arranged proximally in the central part of the roller, andwherein each of the rollers further comprises a complementary element for engaging the positioning device, said element having a configuration complementary to the configuration of one of the positioning elements in the positioning device;mounting the shaft and the rollers into said at least one positioning device, and engaging the roller complementary elements with the positioning elements of corresponding configuration, thus positioning each of the rollers in the inner radial position,mounting the nuts and displacing the rollers radially to the outer radial position, thus engaging threads of said nuts with said proximal thread portions of the rollers;engaging the shaft thread portions with the corresponding roller thread portions and fixing the shaft thread portions with respect to each other;mounting the nuts to provide engagement between said nut threads and said distal thread portions of the rollers;disengaging the complementary elements of the rollers from the positioning elements;fixedly mounting the first member nuts with respect to each other, and fixedly mounting the second member nuts with respect to each other.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (15)
Jacks ; Jr. Morris G., Apparatus and method for controlling angular relation between two rotating shafts.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.