The present invention relates to a foam filled car wheel and its manufacturing method, particularly to a car wheel and its manufacturing method, wherein foam materials are used as filling materials between a steel ring and a tire through a filling mouth, thence the tire cannot leak and the tire can support a car steadily even in case of damage.
These days cars take much convenience, especially for transport in the street. The conventional air-filled wheel is constructed of steel ring, tire and filling air for resilient support to reduce quake caused by irregular pavement.
However, damaged tire, even just with a tiny hole pierced, cannot support the car any more. As result, repair or replace of damaged tire make problem.
Besides, during driving damaged tire can cause traffic accidents. Seriously, life of driver and passersby are threatened cause of puncture. According to the World Traffic Safety Commission, traffic accidents caused of damaged tires accounts to 27%, serious traffic accidents caused of puncture accounts to 67%. This shows the importance of tires for traffic safety.
Furthermore, even tires are airproof, however, in most cases tire pressure reduces 1 psi each month. Therefore, in standard operating manual a car owner is required, to check fullness of the tire and to measure tire pressure at least e in month, it is inconvenient.
Besides, it is well known, that the effect of air thermal expansion and contraction is very obvious. Since a tire has a certain volume, change of tire temperature is vast during cold state and high speed driving, Therefore, change of tire pressure is vast. As result, life of a tire reduces.
Moreover, normally thread pattern after certain wear and tear, change of a tire is required. For saving money there is recycling tire developed, wherein for saving money new tread pattern is jointed on the tire, after tread pattern is flattened. However, after long-term use, damage is accumulated in the inner tire, even outworn tread pattern is invisible. As a matter of fact, recycled tire is not safe.
In view of these disadvantages the inventor tried the continuous testing and improvement and developed the present invention.
The main object of the present invention is to provide a foam filled car wheel and its manufacturing method, wherein the tire will not leak and the tire can support the car steadily even in case of damage.
For achieving above object, the present invention comprises: a steel ring, connecting a power device of a car, having a filling mouth inside the steel ring; a tire, set outside around the steel ring; and filling materials, injected between the steel ring and the tire through the filling mouth of the steel ring; it is characterized in that: the filling materials are foam materials, whereby a tire will not leak, thence it is achieved that the tire can support the car steadily even in case of damage.
Another object of the present invention is to provide a foam filled car wheel and its manufacturing method, wherein the tire pressure is kept stable, and life of tire is extended.
For achieving above object, it is characterized in that: filling materials of the tire are foaming materials, which cannot leak and is free from hot up and down due to temperature change. Thence, it is achieved, that tire pressure is kept stable, and life of tire is extended.
Another object of the present invention is to provide a foam filled car wheel and its manufacturing method, wherein tires can be changed easily.
For achieving above object, it is characterized in that: outside around the steel ring is coated with release agent, whereby the foamed filling materials in the inner tire cannot stick the steel ring. Thence it is achieved, that tires can be changed easily.
Another object of the present invention is to provide a foam filled car wheel and its manufacturing method, wherein it is avoided, the changed tire to be remanufactured as recycling tires.
For achieving above object, it is characterized in that: after the tire is set on the steel ring and filled with foaming materials, tire pressure cannot reduce by removing the filling materials, Thence, it is achieved that remanufacturing a recycling tire is avoided.
Another object of the present invention is to provide a foam filled car wheel and its manufacturing method, wherein gas of conventional air filled car wheel is replaced by filling materials of foaming materials, whereby, disadvantages of leaking and puncture of a conventional air filled car wheel are avoided and safety is increased.
For achieving above object, it is characterized in that: using steel ring and tire of a conventional car wheel; replace gas of conventional air filled car wheel by filling materials of foaming materials, whereby disadvantages of leaking and puncture of a conventional gas filled car wheel are removed, thence it is achieved that safety is increased.
Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawing, illustrating by way of example the principles of the present invention.
as shown in
In the present invention conventional steel ring and tire are used, wherein conventional filling gas is replaced by foaming materials, injected into the tire 2; whereby disadvantages of leaking, puncture in conventional air filled car wheel are avoided. Thence it is achieved that safety is increased.
Therein, the tire has an inner tire body (not shown) and the filling materials 5 are filled in the said inner tire body.
Filling materials 5 are foaming polymer materials of low specific gravity, which after solidification become a resilient solid, and comprise: 5˜18 weight % of foaming agents (like HFC-245; 1.1.1.3.3-pentafluoropropane, 9˜25 weight % of antioxidants (likeBHT), 30˜60 weight of foam stabilizers (like Tegostab B8462) and 20˜25 weight % of catalysts (like Dabco TMR-4). Since filling materials 5 in the tire 2 are foaming materials, the tire will not leak, thence it is achieved that the tire can support the car steadily even in case of damage.
Besides, since filling materials 5 in the tire 2 are foaming materials, so the tire cannot leak, is free from hot up and down due to temperature change. Thence, tire pressure is kept stable, and it is achieved, that life of a tire is extended.
As shown in
As shown in
As shown in
As shown in
As shown in
As shown in
Therein, the release agent 13 is lipid or wax, which can avoid the filling materials 5 to stick on the steel ring.