SU381572A1 - BUSHING OF THE LEADING WHEEL OF THE THREE-WHEELED BIKE - Google Patents

Description

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The invention relates to the field of bicycle making, in particular, to the design of a drive wheel hub for a tricycle.

The hub of a drive wheel of a tricycle is known, comprising a hub, a cantilever mounted on a drive shaft, supported on a radially resistant sole, and a nut screwed on a threaded shaft end. However, such a hub design does not ensure proper adjustment of the drive wheel.

The purpose of the invention is to facilitate assembly and disassembly, increasing reliability and durability.

This is achieved by the fact that the cantilever end of the shaft is made with successively arranged grieno, threaded and cylindrical surfaces, the hub is screwed onto the threaded part of the shaft and has a conical recess from the outer end, into which the split cov is mounted on the faceted part of the shaft protrusions included in the corresponding grooves made on the outer end of the hub, and the cone is pressed against the conical recess of the hub by means of a nut screwed on the threaded shaft of the shaft.

FIG. 1 shows schematically the fastening of the hub on the axis of the drive wheel; on

FIG. 2 - Sleeve, end view; in fig. 3 - rezno / 1-L VA FIG. 2

The hub of the drive wheel consists of a shaft / having a supporting superstructure 2. a thread 3 on which the hub 4 is mounted, which is fixedly connected to the housing 5. To lock the hub 4 and the housing 5 against the shaft, the sleeve 6, which has a hexagon-shaped bore 7, is mounted on the shaft polyhedron 8, is fixed.

The protrusions 9 of the sleeve 6 fit into the slots 10 of the housing 5. The sleeve 6 is made in the form of a disk with the projections 9 and the cone //, the angle of which is 20-30 °. The cone // has slots 12, which serve to ensure deformations after assembly when tightening the nut 13, which create tension in the axial direction. Nut tightening forces 3 are transmitted to the bearing 14 through the fuse protection 15, washers 16, sleeve 6, hub 4 and housing 5. When mounting and adjusting the drive wheel assembly with housing 5 and hub 4, it is screwed onto the threaded part 3 of the shaft / against the stop the housing 5 into the bearing 14, after which the sleeve 6 is put on the polyhedron 8. In this case, the projections 9 of the sleeve 6 should enter the grooves 10 of the Cornus 5. If the projections 9 do not coincide with the grooves 10, the sleeve 6 must be removed and the wheel turned to the minimum angle and again put the sleeve 6 on the polyhedron 8

until the cone stops // into the conical surface 17 of the hub 4. After that, the washer 16 and the dust preventer 15 are put on the threaded shank 18, the nut 13 is put on and tightened 13. Thus, a tight connection will be selected and at the same time Wits g between the sleeve 6, the polyhedron 8 and the hub 4, which protects the nut 13 from self-loosening and gives a stable adjustment to the shaft 14.

Subject invention

A tricycle drive wheel hub containing a hub mounted cantilever on the drive shaft supported on a radial thrust bearing and a nut screwed onto the threaded shaft end, which in order to facilitate assembly and disassembly, increase reliability and

durability, the cantilever end of the shaft is made with successively faceted, threaded and cylindrical surfaces, the hub is screwed onto the threaded part of the shaft and has a conical

a recess into which a split cone is placed, mounted on the faceted part of the shaft and having a flange with protrusions that fit into the corresponding grooves made on the outer end of the hub, the cone being pressed

to the conical recess of the hub by means of a nut, screwed on the threaded shaft of the shaft.

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FIG. I

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