Section structure of motorcycle tire

Abstract

The invention discloses a section structure of a motorcycle tire. The motorcycle tire comprises a tire tread part, a tire bead part and a tire lip part, wherein the tire bead part consists of an upper circular arc line and a lower straight line; an included angle formed between the circular arc line and the straight line is an obtuse angle; saw-toothed patterns are arranged all around the straight line; the tire bead part and the tire lip part are chamfered. The tire bead part which consists of the circular arc line and the straight line is approximate to a broken line, so that the rigidity of the tire bead part is ensured, the tire and a rim can be well embedded, and the problem of separation of the tire lip part from the rim is solved; moreover, by additionally arranging the saw-toothed patterns on the straight line of the tire bead part, the whole weight of the tire can be reduced; by chamfering the tire bead part and the tire lip part, stress concentration between the tire bead part and the tire lip part can be prevented, and the strength of the tire bead part can be ensured; when the tire runs in an internal pressure reduction state, the tire can be fastened with the rim, the air preservation performance is improved, and a motorcycle can reach the nearest maintenance point.

Description

technical field [0001] The invention relates to a motorcycle tire, in particular to a section structure of a motorcycle tire. Background technique [0002] Such as figure 1 As shown, the cross-sectional profile of the existing motorcycle tire 10' generally includes a tread portion 1', a bead portion 2' and a bead portion 3', in order to enhance the bead portion 2', which has a good ability to absorb road impact and vibration The function of improving comfort and cushioning performance, the bead part 2' is generally designed with the convex arc line 11' and smoothly connected with the inner convex arc line 12' of the bead part 3', so as to be better with the rim 4' cooperation. However, in the tire with this kind of bead portion 2', the rigidity of the bead portion 2' is relatively weak. Since the fitting force between ' and the rim 4' is reduced, there is a problem that the bead portion 3' is easily detached from the rim 4'. [0003] Another example figure 2 As shown, ...

AI Technical Summary

Problems solved by technology

However, in the tire with this kind of bead portion 2', the rigidity of the bead portion 2' is relatively weak. There is a problem that the bead 3' is easily detached from the rim 4' because the fitting force between ' and the rim 4' is reduced.

[0003] Another example figure 2 As shown, in the existing motorcycle tire 10'', if the arc of the outer convex arc line 11'' of the bead portion 2'' is increased to be close to a straight line and aligned with the inner convex arc line of the bead portion 3'', 12'' are connected with each other in a straight line and roughly form a right angle, so that the bead part 2'' can play a supporting role, better fit with the rim 4', and effectively prevent the bead part 3'' from detaching from the rim 4'' The problem is that when the tire 10'' is running under a state of reduced internal pressure, it is guaranteed to reach the nearest maintenance point, but if the thickness B' of the bead part 2'' becomes thicker in this way, the overall weight of the tire will increase and the fuel consumption will increase

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