Overload release torsion damping device for a worm gear reducer
First Claim
1. A torsion damping device in combination with a worm gear reducer (20) comprising a housing (28) including a first end portion (280) and a second end portion (282), a drive shaft (21) rotatably mounted in said first end portion (280) of said housing (28), a worm (210) fixedly mounted on said drive shaft (21), a driven shaft (27) rotatably mounted in said housing (28), disposed perpendicularly to said drive shaft (21) and including a first end portion formed with an outer thread (272), a mediate portion, and a second end portion, and a worm wheel (22) mounted on said mediate portion of said driven shaft (27), meshing with said worm (210) and including two sides, said torsion damping device comprising:
- two friction washers (30) each mounted on said driven shaft (27) and each urged on a corresponding one of said two sides of said worm wheel (22);
two abutting rings (40) each securely mounted on said driven shaft (27) and each urged on a corresponding one of said two friction washers (30);
a biasing member (50) mounted on said first end portion of said driven shaft (27) and urged on one of said abutting rings (40);
a sleeve (60) mounted on said first end portion of said driven shaft (27) and including a first end portion urged on said biasing member (50) and a second end portion; and
a compression nut (70) threadedly engaged on said outer thread (272) of said driven shaft (27) and urged on said second end portion of said sleeve (60).
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Accused Products
Abstract
A worm gear reducer includes a worm fixedly mounted on a drive shaft rotatably mounted in a housing, a driven shaft rotatably mounted in the housing and including a first end portion formed with an outer thread, a mediate portion with a worm wheel mounted thereon meshing with the worm, and a second end portion. A torsion damping device includes two friction washers each mounted on the driven shaft and each urged on one side of the worm wheel, two abutting rings each securely mounted on the driven shaft and each urged on a corresponding one of the two friction washers, a biasing member mounted on the first end portion of the driven shaft and urged on one of the abutting rings, a sleeve mounted on the first end portion of the driven shaft and urged on the biasing member, and a compression nut engaged on the outer thread of the driven shaft and urged on the sleeve.
19 Citations
6 Claims
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1. A torsion damping device in combination with a worm gear reducer (20) comprising a housing (28) including a first end portion (280) and a second end portion (282), a drive shaft (21) rotatably mounted in said first end portion (280) of said housing (28), a worm (210) fixedly mounted on said drive shaft (21), a driven shaft (27) rotatably mounted in said housing (28), disposed perpendicularly to said drive shaft (21) and including a first end portion formed with an outer thread (272), a mediate portion, and a second end portion, and a worm wheel (22) mounted on said mediate portion of said driven shaft (27), meshing with said worm (210) and including two sides, said torsion damping device comprising:
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two friction washers (30) each mounted on said driven shaft (27) and each urged on a corresponding one of said two sides of said worm wheel (22); two abutting rings (40) each securely mounted on said driven shaft (27) and each urged on a corresponding one of said two friction washers (30); a biasing member (50) mounted on said first end portion of said driven shaft (27) and urged on one of said abutting rings (40); a sleeve (60) mounted on said first end portion of said driven shaft (27) and including a first end portion urged on said biasing member (50) and a second end portion; and a compression nut (70) threadedly engaged on said outer thread (272) of said driven shaft (27) and urged on said second end portion of said sleeve (60). - View Dependent Claims (2, 3, 4, 5, 6)
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Specification