| 摘要 |
The coupler has a sheet mold part on which holes (6) are formed for passage of screws for fixing the sheet mold part with a trailer draw bar. A rotatable ball cup is held on swivel bolts (9). The swivel bolts are guided by through holes of the cup and mounted on bearing bores (8) of a housing. The swivel bolts are arranged in a clutch mouth of the housing. The housing is provided with corrugation parts (5) that are extended from an edge region (7) of the housing to an opposite edge region of the housing and arranged at certain distance from one another in a receiving area for the draw bar. |
