U.S. patent number 3,638,356 [Application Number 05/066,671] was granted by the patent office on 1972-02-01 for wheel for a toy car.
This patent grant is currently assigned to Mattel, Inc.. Invention is credited to Harvey W. La Branche.
United States Patent |
3,638,356 |
La Branche |
February 1, 1972 |
WHEEL FOR A TOY CAR
Abstract
A wheel which simulates a wide track tire with a decorative hub
comprising a tire member which can receive a variety of different
"mag wheels" or hubcap members. The tire member is cup shaped, with
tapered inner walls for tightly receiving a hubcap member pressed
therein. The hubcap member has a tubular portion which receives a
protruding hub portion of the tire member as the hubcap member is
pressed into place, to prevent tilting of the hubcap member.
Inventors: |
La Branche; Harvey W. (Palos
Verdes Peninsula, CA) |
Assignee: |
Mattel, Inc. (Hawthorne,
CA)
|
Family
ID: |
22070957 |
Appl.
No.: |
05/066,671 |
Filed: |
August 25, 1970 |
Current U.S.
Class: |
446/465;
301/1 |
Current CPC
Class: |
A63H
17/262 (20130101) |
Current International
Class: |
A63H
17/00 (20060101); A63H 17/26 (20060101); A63h
017/26 () |
Field of
Search: |
;46/201,202 ;301/1,111
;308/20 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Kinsey; Russell R.
Assistant Examiner: Cutting; Robert F.
Claims
What is claimed is:
1. A low friction wheel assembly for a toy vehicle which rolls at
high speed relative to its size, comprising:
a tire member having a central bearing hole for receiving a
vehicle-supporting axle, and a tire portion with an outer rolling
surface integral with the walls of said bearing hole, said tire
member having an inner face for facing towards said vehicle and an
outer face for facing away from said vehicle, said outer face
defining a hubcap-receiving recess; and
a hubcap member for reception in said recess of said tire member,
said hubcap member having an axially inwardly protruding annular
portion of smaller diameter than the outer hubcap diameter for
engaging a region of said tire member about said bearing hole.
2. The wheel assembly described in claim 1 wherein:
said hubcap member includes means for retention in said recess
while allowing ejection therefrom under high ejecting forces, and
all of said hubcap member lies substantially within the axial
boundary defined by said outer face of said tire member.
3. The wheel assembly described in claim 1 wherein:
said recess has sloping walls; and
said hubcap member has correspondingly sloping walls for providing
a snug fit with the walls of said recess.
4. A wheel for a toy vehicle which simulates a wide tread tire,
comprising:
a tire member having a hub portion with a bearing hole for
receiving a vehicle-supporting axle and a radially outer tire
surface concentric with said bearing hole for rollably supporting
said toy vehicle, said tire member having an inner face for facing
towards said vehicle and an outer face for facing away from said
vehicle, said outer face defining a hubcap-receiving recess with
sloping walls; and
a hubcap member having an outer hubcap diameter between the
greatest and smallest diameters of said recess in said outer face
of said tire member for reception therein to a predetermined depth,
said hubcap member having an axially inwardly protruding annular
portion of smaller diameter than said outer hubcap diameter for
abutting a region of said tire member about said bearing hole.
5. The wheel described in claim 4 wherein:
said hub portion of said tire member includes a tapered portion
protruding axially outwardly into said recess; and
said protruding annular portion of said hubcap member has a central
recess with tapered walls for closely receiving said tapered hub
portion.
6. The wheel described in claim 4 wherein:
said hubcap member has a tapered outer surface for an interference
fit with the walls of said recess, and said hubcap member has an
axial length small enough so that no part of said hubcap member
protrudes axially past said tire member when installed therein in
an interference fit.
7. The wheel described in claim 4 wherein:
said hub portion of said tire member has a tapered portion
protruding axially into said recess;
said annular inwardly protruding portion of said hubcap member has
a central recess with tapered walls for receiving said tapered hub
portion in a substantially interference fit therewith; and
the outer surface of said hubcap member is tapered and is located
to form a substantially interference fit with the walls of said
recess of said tire member as the tapered walls of said annular
hubcap portion form a substantially interference fit with the walls
of said hub portion of said tire member.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to toy vehicles and, more particularly, to a
wheel assembly for toy vehicles.
2. Description of the Prior Art
One type of toy vehicle which has become popular is constructed for
low wheel friction to permit fast movement, and is designed to
resemble real or imaginary high performance automobiles. The
necessity for low friction requires that the bearing hole through
which the axle extends be of small diameter and that it be
concentric with the tire rolling surface. The attainment of a
realistic racing appearance, makes it desirable that the wheels
have a wide tread appearance and that hubcaps of highly decorative
appearance be provided. While all tires may be expected to have a
common black color suggestive of rubber tires, the hubcaps should
be highly decorative. It would be desirable if the hubcaps could be
produced separately from the tires and perhaps of different
material that could be more easily decorated. In some application,
where a child may wish to change the decorations of his vehicles,
it would be desirable to enable the child to easily remove a hubcap
and replace it with another of different design.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is to provide a toy vehicle
wheel of attractive design and efficient performance.
Another object is to provide toy vehicle wheel assemblies with a
variety of selectable hub designs, which is economical to produce
and entertaining to play with.
In accordance with one embodiment of the present invention, a wheel
is provided for a toy vehicle which includes a cup-shaped tire
member, and a decorative hubcap member which can be inserted into
the tire member. The tire member has a central bearing hole for
receiving an axle that supports the vehicle frame, and a tire
perimeter concentric with the bearing hole for rollably supporting
the vehicle. The inner walls of the recess formed by the cup-shaped
tire member are tapered, and they receive the hubcap member in an
interference fit therewith. In order to prevent tipping or skewing
of the hubcap member, it is provided with a tubular extension at
its center which receives a hub projection on the tire member in an
interference fit. The hubcap member serves as a thrust bearing for
the vehicle axle, and it can be removed for replacement with
another hubcap member by merely pushing the tire member hard
towards the vehicle. Another hubcap member of different design can
be installed by merely pushing it into position.
The novel features of the invention are set forth with
particularity in the appended claims. The invention will be best
understood from the following description when read in conjunction
with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a toy vehicle constructed in
accordance with the preset invention;
FIG. 2 is a sectional view of a wheel assembly taken on the line
2--2 of FIG. 1;
FIG. 3 is a perspective view of the wheel assembly of FIG. 2;
FIG. 4 is a perspective, partially sectional, exploded view of the
wheel assembly of FIG. 3; and
FIG. 5 is a sectional view of a wheel assembly constructed in
accordance with another embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 illustrates a toy vehicle which includes a body 10 rollably
supported by four wheel assemblies 12. The vehicle body is designed
to represent a high speed racing car, and the wheel assemblies are
constructed to resemble racing wheels. Each wheel assembly includes
a wide track tire member 14 and a highly decorative wheel or hubcap
member 16. The visible portion of hubcap member 16 has the
appearance of a part often referred to as the "wheel" in automotive
nomenclature, but is herein referred to as the hubcap member. This
portion 16 of an automobile wheel assembly is often the most highly
decorative part. The outer portion of the tire member 14, however,
is designed for high performance and generally is not highly
decorative, although a wide track appearance is generally desirable
to suggest racing tires.
As shown in FIG. 2, the tire member 14 is cup-shaped with an outer
or tire portion 18, an inner or hub portion 20, and an annular web
portion 26 connecting them. The hub portion 20 has a bearing hole
22 for receiving the axle 24 of the vehicle. The axle 24 passes
through the inner face I of the tire member, but does not reach the
outer face O which faces away from the vehicle. Most of the tire
portion 18 extends like an axial flange from the web portion 26, so
that it forms a recess in the outer face O of the tire member which
receives the hubcap member 16.
The hubcap member 16 has a rim portion 28 with tapered sides for
engaging correspondingly tapered walls 30 that form the recess in
the tire member. The diameter of the hubcap rim portion 28 is in
between the smallest and largest diameter of the tire portion walls
30, so that a snug fit can be achieved. The hubcap member also has
an annular or tubular portion 32 that extends towards the inside of
the tire member recess and which receives a projecting part 34 of
the tire member hub portion 20. Both the inside of the tubular
hubcap portion 32 and the projection 34 have tapered walls that
engage in a snug or interference fit. However, the tubular hubcap
portion can often "bottom" in the recess to abut the outer surface
26S of the web portion of the tire member.
The construction of the wheel assembly 12 is accomplished by first
inserting the vehicle axle 24 through the bearing hole 22 in the
tire member and cold heading the end 36 of the axle. The hubcap
member 16 is then pressed into place. The firm engagement of the
rim portion 28 of the hubcap member with the walls 30 of the tire
member recess help to assure retention of the hubcap member. The
fact that the tubular member 32 fits snugly over the projection 34
of the tire member helps to prevent skewing of the hubcap member.
The fact that the tubular member 32 makes a snug fit with the
projection 34 provides for additional retention of the hubcap
member. The hubcap member serves as a thrust bearing for the
cold-headed end 36 of the axle, and also helps to decorate the
wheel assembly.
In many cases, it is desirable to provide the vehicle with a set of
at least two hubcap members 16. A child can then remove a hubcap
member by pushing inwardly on the wheel assembly until the axle end
36 pushes out, or ejects, the hubcap member which is already
installed. The child then presses a hubcap member with a different
design into place, using only his fingers. The retention forces of
the interference fit is generally sufficient to hold the hubcap
member in place, even though during use the hubcap member sometimes
applies a slight thrust force against the end of the axle 24.
However, the hubcap member 16 generally is not held tightly enough
to resist handling contact, so it is made with a depth smaller than
the depth of the tire member recess into which it fits.
Accordingly, no part of the hubcap member projects substantially
from the axial boundary defined by the outer face O of the tire
member, and the hubcap member is not subject to blows during normal
use that will move it out. Of course, in situations where it is not
desired for a child to replace the hubcap members, the hubcap
members can be additionally cemented into place or assembled
tighter mechanically to prevent removal even during long periods of
use.
The provision of a tire member 18 which includes both the axle
bearing hole 22 and the tire portion 18 that rollably supports the
vehicle on the ground assures concentricity of the bearing hole and
tire surface 18S so there is a minimum of wobble at high speed
travel of the vehicle (relative to its size). The fact that the
entire tire surface is integral with the bearing hole assures
concentricity of all portions. Thus, even when the edge 18E
contacts a rounded, trough-shaped track region, which is sometimes
employed at curves, there will be a minimum of friction. No special
advantage would be obtained by making the hubcap portion integral
with the walls of the bearing hole. In fact, there would be a
disadvantage in that many materials which provide low friction for
the axle 24 are difficult to elaborately decorate in shape or
color. Accordingly, it is desirable that the hubcap portion 16 be
separate from the tire member 18.
The hubcap portion 16 does not have to have especially low friction
or withstand great abuse, and materials can be used for it which
are primarily easy to decorate in shape and color. In fact,
materials can be used for the hubcap member which by nature of
color and/or texture of the material are decorative, thereby
negating further decorative processes. When designing a wide
variety of wheel assemblies, only a single type of tire member 14
need be produced and stocked, yet wheels of a variety of
appearances can be obtained by using different hubcap members.
Larger tire sizes can also use the standard hubcap members.
Thus, the invention provides a wheel assembly suitable for toy
racing cars that must move rapidly and which must have a highly
attractive racing appearance. This is achieved by utilizing a wheel
assembly having an integral tire member that provides a bearing for
the vehicle axle and a tire portion representing a wide tread tire,
and a separate hubcap member which can be readily installed in a
recess in the outer face of the tire member. Various types of tire
and wheel members can be employed. For example, FIG. 5 illustrates
a wheel assembly wherein the hubcap member 40 has a radially
outwardly extending flange 42 that is received within a groove 44
formed on the inner surface of the tire portion 46 of a wheel
member 48. It may be noted that even here, the main rolling surface
46S and the outer edge 46E are both integral with the bearing hole
50 to promote minimum rolling friction under a variety of
conditions.
Although particular embodiments of the invention have been
described and illustrated herein, it is recognized that
modifications and variations may readily occur to those skilled in
the art and, consequently, it is intended that the claims be
interpreted to cover such modifications and equivalents.
* * * * *