CN2396987Y - Non-inflatable tyre - Google Patents

Abstract

The utility model discloses an exempt from pneumatic tire. This tire comprises the tire matrix by the elastomer, and the wearing layer is hugged closely at tire matrix outward appearance, and the earthing section is one section smooth curve to the matrix bending outward, and both sides are the smooth curve to the crooked of tire axis direction of symmetry, the utility model discloses have tangible change and diminish, can reduce tire ground connection area furthest, reduced frictional force's advantage, overcome ride in the prior art and drive the defect hard, that the tire easily weares and teares.

Description

Non-inflatable tyre

The utility model relates to a kind of non-inflatable tyre.

The most widely used at present air-inflation tyre needs frequent tonifying Qi, thereby causes very big trouble to the user.For overcoming this defective, people have invented the non-inflatable tyre of a lot of types.Though these tires have been exempted the trouble of tonifying Qi, some problems have in use also appearred, and easy to wear etc. such as: the effort of driving or ride, carcass.One of trace it to its cause is the unreasonable structure of these tires.For example: existing non-inflatable tyre all is the entity made from a kind of material basically, and shape is identical with air-inflation tyre or approximate.The tire entity elasticity of being made by a kind of material is very big and do not have enough hardness, simultaneously from existing air-inflation tyre section shape, the ground plane of tire is made of one whole section circular arc with the side that links to each other, when taking place when these two kinds of situations can make tire force than large deformation, its ground contact area is increased significantly and can planar condition difference become uneven everywhere, therefore cause the tire friction force very big, make and drive and the effort of riding; Also very easily make wear on tyres in addition.

The purpose of this utility model be to provide a kind of not easy to wear, the labour-saving non-inflatable tyre travels.

The purpose of this utility model is achieved in that promptly this tire is made up of elastic body and wearing layer, elastic body constitutes tire carcass, wearing layer is close to the tire carcass appearance, the tire shape of cross section is: ground connection Duan Weiyi section is to the smooth curve of carcass outside sweep, both sides are smooth curves to the direction bending of tire axis of symmetry, and the carcass other end has the body that rises that props up that protrudes from outside the carcass.Tire is fixed on the rim by propping up the body that rises.

Structure of the present utility model can make the ground plane of tire very little at stress and deformation, and the design plan of its cross-sectional plane optimization is for this reason: ground connection section curve is a radius greater than 35mm, the arc length circular arc less than 20mm, and wearing layer thickness is between 4-7mm.

The utility model with existing non-inflatable tyre relatively, non-inflatable except having, not the advantage such as tire patching, also embodied following good effect: one, therefore not only the utility model tire carcass is made by the material of difference in functionality is compound, and antifriction decreases but also can satisfy the operating needs that elasticity is big, intensity is high; Its two, the utility model is rational in infrastructure, deformation is little, can reduce tire-contact area to greatest extent, has reduced friction force, makes to drive and ride laborsaving.Its three, the utility model is because deformation reduces, therefore it is easy because of distortion and take turns hoops off to be difficult for as existing non-inflatable tyre.

The utility model will be further described by the following examples and in conjunction with the accompanying drawings.

Fig. 1 is an example structure cutaway view that is applied on the bike tyre.

Among Fig. 1, the 1st, wearing layer, the 2nd, elastic body, the 3rd, prop up the body that rises, the 4th, rim.Wearing layer 1 by natural rubber and PVC modified after make elastic body 2 government rubbers and polythene blending modified making; Wearing layer 1 and elastic body 2 is by the combination of consubstantiality sulfuration process, and the tire carcass that elastic body 2 is made has better elastic, and the wearing layer that covers on the elastic body 2 also has certain support strength except can be wear-resistant.The body 3 that rises is projections of carcass below, and the body 3 that rises is embedded into 5 li of rim grooves just can make whole tire fix.

The cross-sectional plane that tire is fixed on rim 4 back exposed parts is made of three sections curves, ground connection section 7 is one section radius circular arcs to the carcass outside sweep between 35-50mm, whole circular arc arc length is between the 14-20mm, ground connection section dual-side is the circular arc 6 of the radius of symmetry in the bending in carcass between the 35-80mm, and side circular arc 6 is flex points with ground connection circular arc 7 point of connection.

Claims (2)

1, non-inflatable tyre is made up of elastic body (2) and wearing layer (1), and elastic body (1) constitutes tire carcass, it is characterized in that:

Wearing layer (1) is close to the tire carcass appearance, the tire shape of cross section is: ground connection Duan Weiyi section is to the smooth curve (7) of carcass outside sweep, both sides are smooth curves to the direction bending of tire axis (6) of symmetry, and the carcass other end has the body (3) that rises that props up that protrudes from outside the carcass.

2, non-inflatable tyre according to claim 1 is characterized in that:

Ground connection section curve (7) is a radius greater than 35mm, the arc length circular arc less than 20mm, and wearing layer thickness is between 4-7mm.