Polyurethane foam tires without inflating

2021-06-29 19:53:55 admin

The utility model discloses one kind to exempt to inflate polyurethane foam tire, including tire body, the tire body includes polyurethane foam cover tire and the EVA foam inner tubes of a tyre, the EVA foaming inner tubes of a tyre are the integrated formed structure of EVA material perfusion, the integrated molding polyurethane foam cover tire that EVA foaming inner tube of a tyre outer cladding is perfused by polyurethane material, tire body are the integral structure of polyurethane foam cover tire and EVA foaming inner tube of a tyre compositions.Not wear-resisting, pure PU wheel costs of material that it solves pure EVA material foam wheel are high, weight of rubber is laid particular stress on peculiar smell, the filling wheel replacement not easy to install that cover tire is filling EVA or PU material in rubber skin, form the drawback of resource wave, it have light-weight, wear-resisting, free from extraneous odour, it is easy to install replace, it is cheap cost-effective and using when will not blow out, exempt to inflate, be more suitable for children's use.


The utility model is related to a kind of carriage for children tires, are especially a kind of apply in child's tricycle, perambulator, children The perambulators class such as sleigh exempts from inflation polyurethane foam tire.


Polyurethane foam tire is gradually applied to carriage for children field, and polyurethane foam tire has Light-weight, wear-resisting property is only second to rubber and is gradually received by middle well-to-do family, but its cost of material is not high, extensive It promotes the use of, at present odorous, the not wear-resisting service life of EVA foaming wheels of the produced perambulator perambulator rubber wheel weight weight in market Short, cover tire is that filling EVA or the replacement not easy to install of the filling wheel of PU material form the drawbacks such as the wasting of resources to people in rubber skin Bring great inconvenience.

Utility model content

In view of the defect of the above-mentioned prior art, the purpose of this utility model is thatOne kind is provided to exempt to inflate elastic polyurethane Body tire.

The technical solution of the utility model isExempt to inflate polyurethane foam tire, including tire body, the wheel Tire main body includes polyurethane foam cover tire and the EVA foam inner tubes of a tyre, and the EVA foam inner tubes of a tyre are the integrated formed structure of EVA material perfusion, The integrated molding polyurethane foam cover tire that EVA foam inner tube of a tyre outer cladding is perfused by polyurethane material, tire body are sent out for polyurethane Steep the integral structure of cover tire and EVA foaming inner tube of a tyre compositions.

Further, wheel hub is connected on the inside of the tire body, and a protection cap is detachably installed on the outside of wheel hub.

Further, the wheel rim of the wheel hub is equipped with the groove of indent, and a circle magnet, the protection cap are equipped in groove Inside be equipped with a circle iron block, on protection cap lid to wheel hub, iron block is adsorbed on magnet.

Exempt to inflate polyurethane foam tires using provided by the utility model, advantage isIt solves pure Not wear-resisting, the pure PU wheels costs of material of EVA material foaming wheels are high, to have peculiar smell, cover tire be in rubber skin to the weighting of weight of rubber Fill the filling wheel replacement not easy to install of EVA or PU material, form the drawback of resource wave, it with it is light-weight, wear-resisting, be no different Taste, it is easy to install replace, it is cheap cost-effective and using when will not blow out, exempt to inflate, be more suitable for children's use.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model

Fig. 2 is the schematic cross-sectional view of the tire body of the utility model

Fig. 3 is that the utility model removes the structural schematic diagram after protection cap

Fig. 4 is the side view of the protection cap of the utility model.

As shown in the figure1-tire body, 11-polyurethane foam cover tires, the 12-EVA foaming inner tubes of a tyre, 2-wheel hubs, 21- Wheel rim, 3-protection caps, 4-grooves, 5-magnet, 6-iron blocks.

Specific implementation mode

For it is relatively intuitive, be fully understood by the technical solution of the utility model, now just combine the progress of the utility model attached drawing Unrestricted feature description is as follows

As shown in Fig. 1-Fig. 4, exempt to inflate polyurethane foam tire, including tire body 1, tire body 1 includes poly- ammonia Ester foaming cover tire 11 and the EVA foam inner tubes of a tyre 12, EVA foam the inner tube of a tyre 12 as the integrated formed structure of EVA material perfusion, EVA foaming The integrated molding polyurethane foam cover tire 11 that 12 outer cladding of the inner tube of a tyre is perfused by polyurethane material, tire body 1 are polyurethane foam The integral structure that cover tire 11 and the EVA foaming inner tubes of a tyre 12 form.

1 inside of tire body connects wheel hub 2, and 2 outside of wheel hub is detachably equipped with a protection cap 3.On the wheel rim 21 of wheel hub 2 Groove 4 equipped with indent, groove 4 is interior to be equipped with a circle magnet 5, and the inside of protection cap 3 is equipped with a circle iron block 6, and protection cap 3 is covered to wheel On hub 2, iron block 6 is adsorbed on magnet 5.The setting of protection cap 3 is that inside tires enter the foreign matters such as sand, dust in order to prevent, 2 service life of wheel hub is improved, protection cap 3 is more convenient installation by the way of the connection of magnet 5 and replaces.

When processing tire body 1, the EVA foaming inner tubes of a tyre 12 are placed in die cavity, reserve for above and below polyurethane foam raw material, it is left The gap of right injection, polyurethane foam material injects die cavity by mold sprue, by centrifugation technique urethane raw to EVA Foam 12 integral coating of the inner tube of a tyre, to constitute integral structure tire.

Provided by the utility model to exempt to inflate PU foam tire, it solves pure EVA material foam wheel not Wear-resisting, pure PU wheel cost of material is high, rubber weight lays particular stress on that have peculiar smell, cover tire be filling EVA or PU material in rubber skin Replacement not easy to install is taken turns in filling, forms the drawback of resource wave, it has light-weight, wear-resisting, free from extraneous odour, replacement easy to install, price It is cheap cost-effective and using when will not blow out, exempt to inflate, be more suitable for children's use.

Certainly, the above is only the preferred embodiments of the present utility model only, and therefore, it does not limit the patents of the utility model Range, all with the utility model specification and schema content institute, simply modification and equivalent structure change for it, should all similarly wrap Within scope of patent protection contained in the utility model.