| 摘要 |
A telescoping steering column assembly ( 10 ) includes upper ( 12 ) and lower ( 20 ) jackets having inner ( 14,22 ) and outer ( 16,24 ) surfaces and telescoping ends ( 28,30 ), ( 32,34 ), respectively, and two sleeves ( 40,50 ) disposed therebetween and having an annular cavity ( 46,56 ) defined within each of the sleeves ( 40,50 ) to hold bearings ( 36 ), ( 60 ) therewithin. One bearing ( 60 ) is connected to the upper jacket ( 12 ) and the other bearing ( 36 ) is connected to the lower jacket ( 20 ). A method of making the assembly ( 10 ) includes the steps of disposing the lower jacket ( 20 ) within the upper jacket ( 12 ) followed by disposing the sleeves ( 40,50 ) therebetween and injecting a plastic material (P) therethrough to form bearings ( 36,60 ). The plastic material (P) is extracted from one of the holes ( 18,66 ) in each of the jackets ( 12,20 ) to provide a sliding engagement between one of the bearing ( 60 ) and the lower jacket ( 20 ) and another bearing ( 36 ) and the upper jacket ( 12 ).
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