Land vehicles: wheels and axles – Wheel – Compression wheel
Patent
1997-02-24
1999-08-10
Stormer, Russell D.
Land vehicles: wheels and axles
Wheel
Compression wheel
301 647, 264274, B60B 502
Patent
active
059347635
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention concerns partly a method for mounting of a tubular-shaped bearing in a hub part of a wheel, the bearing having an elongated cylindrical casing part, which is shaped to be radially supported by axially separated, annular arranged support members in the wheel's hub part, and partly a wheel comprising a wheel body with a hub part, which contains a cylindrical, tubular-shaped bearing.
DESCRIPTION OF THE RELATED ART
During the manufacturing of wheels for cars, light freight vehicles and the like, for example wheels for shopping trolleys which are normally found in shops and supermarkets, various separate sub-operations are required for the manufacturing of the wheel body itself, the molding and the fastening of a tread as well as the mounting and the attachment of wheel bearings.
SUMMARY OF THE INVENTION
A general purpose of the present invention is to achieve a simplification in, and a reduction of the cost of, manufacturing such a wheel.
In its broadest sense, this is achieved according to the invention by axially fixing the bearing in the hub part by introducing an elastic plastic material, via at least one axial opening in at least one of the annular support members, into a space defined by the casing part and an inner wall surface of the hub part between the axially separated support members. An annular flange element can also be shaped around the casing part axially outside the annular support members. In this way an extremely good axial fixing of the bearing is achieved.
Preferably, the wheel body in this method has two complimentary wheel halves and a tubular-shaped bearing placed in a hub part jointly formed by the wheel halves, where the bearing has an elongated cylindrical casing part with parts shaped to be radially supported by axially separated, annular support members arranged in the wheel's hub part, wherein the method comprises the steps of jointly fixing the wheel's hub part by axially-fixing the bearing in the hub part by means of an elastic plastic material, which is introduced, via at least one axial opening in at least one of the annular support members, into a space defined by the casing part and an inner wall surface of the hub part between the axially separated support members, and preferably simultaneously die casting around the outer periphery of the wheel halves an annular tread holding the wheel halves' peripheries together.
Preferably, the molding of the tread and the attachment of the bearing is accomplished with the same kind of material. The moldings material used can be made of an elastic plastic material, such as an elastomer, which can be a synthetic rubber, for example polyurethane rubber or the like.
The wheel according to the invention is characterized in that the hub part comprises axially separated, annular arranged support members having at least one opening and engaging radially a casing part of the bearing, and that the bearing is axially fixed in the hub part by a die cast, elastic plastic material in a space defined by the casing part and an inner wall surface of the hub part.
BRIEF DESCRIPTION OF THE DRAWINGS
Further details and features of the invention will become evident below with reference to the attached drawings, in which:
FIG. 1 is a perspective view of a wheel composed of two wheel halves having a tubular bearing placed therein;
FIG. 2 is a side elevation of one wheel half seen from the outside;
FIG. 3 is a side elevation of the wheel half from FIG. 2 seen from the inside;
FIG. 4 is a cross-section through a molding tool in which two complimentary, identical wheel halves are placed with a tubular bearing mounted in the hub section; and
FIG. 5 is a longitudinal section through the tubular-bearing of the wheel.
DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 shows a wheel generally denoted 10, which is made of two preferably identical, complimentary wheel halves 12 (FIGS. 2 and 3), and a single tubular-shaped bearing 14 in the hub section of the wheel 10. The wheel halves 12 have a disc shaped rad
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patent: 4818034 (1989-04-01), Djerf
Conradsson Ake
Conradsson Bo
Industriverktyg AB
Stormer Russell D.
LandOfFree
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