Car lightweight hub bearing unit
Technical field
The utility model belongs to and revolves the riveting technical field, and the car lightweight hub bearing unit of riveting technology is revolved in specifically a kind of employing.
Background technique
Compression mode for the automobile hub bearing of selling on automobile and the market all adopts nut and pad locking at present, and this kind mode produces vibration and easily makes nut loosening when motor racing, and the intensity of screw thread is limited, and assembling speed is also slower.The bearing unit for saloon car wheel hub of taking common riveting method is also arranged, but this structure takes up room greatly, and volume is large, is difficult for assembling.
Summary of the invention
The utility model adopts novel riveting method for the deficiency of background technique, reduce inner space, volume little, save material, assembling speed is fast.This technical characterstic: produce distortion to the impact of bearing accuracy for preventing spinning force, the shape of riveting mouth is added work be strict with, riveted joint open height, wall thickness, riveting power, riveting head pivot angle all will strictly be controlled.
The technical solution of the utility model is achieved in that the lightweight hub bearing unit, is made of inner ring, magnetic dust cover, rubber seal, steel ball, retainer, outward flange dish, inner flange and knurled nut; It is characterized in that: outward flange dish lasso inner headed face is provided with the biserial raceway; Be respectively equipped with the biserial raceway corresponding with the outward flange dish at the outer surface of inner flange and the outer surface of inner ring; The biserial retainer that steel ball is housed is installed on inside and outside flange plate and the inner ring; Rubber seal comprises seal ring and lower seal, and upper seal ring is installed between the end of outward flange dish inner circle and inner ring cylindrical; Lower seal is installed between inner flange cylindrical and outward flange dish one end; Inner flange small end external diameter and inner ring internal diameter are strictly controlled inner flange small end external diameter with the position of riveted joint by spinning riveting, nut and pad locking mode before replacing by this position riveted joint compression mode.
The riveting technology of revolving described in the utility model is by inner flange small end external diameter is carried out spinning, and strict control riveted joint port part is fixed on riveted joint mouth before on the large end face of inner ring and changes on the step that is fixed on the inner ring internal diameter, thereby plays pressuring action.
The beneficial effects of the utility model are: adopt and revolve the lightweight hub bearing unit of riveting technology, reduce riveted joint mouthful volume, thereby the inner space of reducing material and entrucking more is conducive to assembling.
Description of drawings
Fig. 1 is structure cross-sectional schematic of the present utility model
In the drawings 1. inner rings, 2. the magnetic dust cover, 3. go up seal ring, 4. steel ball, 5. retainer, 6. outward flange dish, 7. lower seal, 8. knurled nut, 9. inner flange.
Embodiment
Among 1 the embodiment, outward flange dish 6 inner headed faces are provided with the biserial raceway in the drawings; Be respectively equipped with the biserial raceway corresponding with outward flange dish 6 at the outer surface of the outer surface of inner flange 9 and inner ring 1; The biserial retainer 5 that steel ball 4 is housed is installed in respectively on inside and outside flange plate and the inner ring; Magnetic dust cover 2 and 3 cooperations of upper seal ring are installed between the end of outward flange dish 6 inner circles and inner ring 1 cylindrical; Lower seal 7 is installed between inner flange 9 cylindricals and outward flange dish 6 one ends; Five knurled nut 8 are installed on the endoporus of inner flange 9, inner flange small end external diameter and inner ring internal diameter pass through spinning riveting, strict control inner flange small end external diameter replaces riveting method before with the position of riveted joint by this position riveted joint compression mode, plays pressuring action.