CN202806223U

CN202806223U - Improved structure of bicycle tire

Info

Publication number: CN202806223U
Application number: CN2012204569075U
Authority: CN
Inventors: 陈秀雄
Original assignee: Cheng Shin Rubber Xiamen Ind Ltd
Current assignee: Cheng Shin Rubber Xiamen Ind Ltd
Priority date: 2012-09-10
Filing date: 2012-09-10
Publication date: 2013-03-20
Anticipated expiration: 2022-09-10

Abstract

The utility model provides an improved structure of a bicycle tire. The improved structure comprises a tire crown and tire edges on two sides of the tire crown, wherein a tire body is provided with a tire cord layer; two ends of the tire cord layer are outwards rolled and wrapped after bypassing a bead ring so as to form a tire bead; a piece of scratching preventing cloth is arranged on the outer side of the tire cord layer on the tire bead; the tire cord layer comprises an outer tire cord layer and an inner tire cord layer; two ends of the inner tire cord layer are outwards rolled after bypassing the bead ring from the inside and extend to the tire edges to have the height 30 to 60% that of one tire edge; and the scratching preventing cloth is placed on the outer side of the tire cord, and two ends of the scratching preventing cloth bypass the bead ring and respectively extend to the tire edges until reaching a lining of the tire. According to the improved structure of the bicycle tire, the tire body is additionally provided with the inner tire cord layer, the two ends of the inner tire cord are outwards rolled after bypassing the bead ring from the inside and extend to the tire edges, and the scratching preventing cloth layers which bypass the bead ring are respectively and additionally adhered on the tire beads on two sides, so that the rigidity of the tire crown, the tire edges and the tire bead can be directly and efficiently improved, the tire can safely run under adverse states such as a high load state and a high impact state, and the service life is prolonged.

Description

The bike tyre structure of improvement

Technical field

The utility model relates to a kind of pneumatic tire structure, relates more specifically to a kind of bike tyre structure that can be used for the improvement of limit competitive sport.

Background technology

BMX(bicycle motorcross) be a cycle racing that originates from the U.S., the exceedingly difficult movements such as jump, climbing are often arranged, many teenagers hanker after this limit competitive sport, know from experience stimulation that the shock of moment brings with excited.The vehicle of BMX is generally the small-wheel-diameter car below 20 cun or 20 cun, many special characters are arranged in the design of vehicle body, make it to bear the impulse force of throwing from the place of several meters high, and the tire that directly contacts as vehicle and ground, its performance is related to the key of vehicle performance especially.

And at present, the tire that a lot of BMX vehicles use is the same with the tire construction of ordinary bicycle, as shown in Fig. 1,2, and carcass employing one deck curtain yarn and in the overlapping structure of crown part.This is simple in structure, is easy to produce, and is enough for performance on ordinary bicycle, but often is in the usage condition of high load capacity, HI high impact for the BMX vehicle, still has some deficits on its performance, and Main Analysis is as follows:

1, tire 1 ' crown part 10 ' rigidity is not enough, easily clashes into and causes the indent phenomenon because of moment, and this moment, tire 1 ' can't close proximity to ground, and made earth-catching property not enough;

2, tyre bead section 30 ' is too weak, can't carry violent flexural deformation, and produces the phenomenon of spoiling under self folding tyre bead, causes the early damages such as 30 ' the sizing material be full of cracks of tyre bead section, the 20 ' fracture of curtain yarn, affects the service life of tire 1 ';

3, tire 1 ' tire lip 10 ' is arranged on wheel rim, anti-wiper 42 ' is set in contact site both can makes the curtain yarn of tire lip 10 ' be difficult for being worn, but can't strengthen the rigidity of whole tire lip 10 '.If the rigidity of tire lip 10 ' is not enough, when vehicle jumped from eminence, its impulse force can make the tire lip can't be fixed on the wheel rim seat, broke away from the wheel rim seat.Particularly when tire 1 ' was filled with higher blast, tire lip 10 ' pressurized was more serious, blew from wheel rim with regard to easier, caused and fell car danger.

Because the familiar lacunas of above-mentioned existing tire construction, need the condition of service for BMX limit racing vehicle, the structure of research, a kind of improvement of exploitation, to can be directly, the rigidity of crown part, tyre bead section and the tire lip of reinforced tire effectively, tire can be used safely under the badness such as high load capacity, HI high impact, and life-saving.This case just produces thus.

The utility model content

The purpose of this utility model is to provide a kind of bike tyre structure of improvement of crown part, tyre bead section and tire lip rigidity of effective reinforced tire.

For achieving the above object, solution of the present utility model is:

A kind of bike tyre structure of improvement, this tire comprises crown part, is positioned at the tyre bead section of crown both sides, be provided with curtain yarn layer at tire body, the two ends of curtain yarn layer are to walk around the outside turnup bag of bead coil to put formation tire lip, and the curtain yarn layer arranged outside on the tire lip has an anti-wiper; Wherein: curtain yarn layer comprises outer curtain yarn and internal layer curtain yarn, and internal layer curtain yarn two ends are also by the interior outside turnup of bead coil of walking around, and its two ends extend to the height that tyre bead has a tyre bead section height 30% ~ 60%; Described anti-friction cloth is arranged on the outside of curtain yarn, and its two ends are walked around bead coil and extended to respectively tyre bead, tire inside.

Described crown center has three layers of outer curtain yarn and one deck internal layer curtain yarn, and tyre bead section upper edge has two outer layers curtain yarn and one deck internal layer curtain yarn, and tyre bead subordinate edge, tire lip have two outer layers curtain yarn and two-layer internal layer curtain yarn.

The fiber orientation of described outer curtain yarn and internal layer curtain yarn forms angle with tire circumferential direction respectively, and internal layer curtain yarn and outer curtain yarn fiber trend are and intersect configuration.

The fiber orientation of described outer curtain yarn and internal layer curtain yarn respectively and the angle that forms of tire circumferential direction be set to 40 degree between 60 degree.

Described anti-wiper two ends are walked around bead coil and are extended to tyre bead, tire height inside and all be less than or equal to 30% of tyre bead section height.

After adopting such scheme, the utility model is by arranging internal layer curtain yarn in the increase of tire carcass curtain yarn layer, its two ends extend to tyre bead by the interior outside turnup of bead coil of walking around, stick on respectively at the tire lip of both sides and walk around the anti-wiper of bead coil, can be directly, the rigidity of crown part, tyre bead section and the tire lip of reinforced tire effectively, tire can be used safely under the badness such as high load capacity, HI high impact, and extend its service life.

Description of drawings

Fig. 1 is the sectional schematic diagram of existing bike tyre;

Fig. 2 is the partial enlarged drawing of existing bike tyre tyre bead and bead structure;

Fig. 3 is the sectional schematic diagram of the utility model tire;

Fig. 4 is the carcass yarn planar view of the utility model tire;

Fig. 5 is the partial enlarged drawing of the utility model tyre edge and bead structure.

1 ' tire 10 ' crown part 20 ' curtain yarn

30 ' the anti-wiper of tyre bead section 42 '

1 tire 10 crown part 20 curtain yarn layers

21 outer curtain yarn 22 internal layer curtain yarn 30 tyre bead sections

The 40 tire lip 41 anti-wipers of bead coil 42.

The specific embodiment

To shown in Figure 5, the utility model has disclosed a kind of bike tyre structure that can be used for the improvement of limit competitive sport as Fig. 3.As shown in Figure 3, this tire comprises crown part 10, is positioned at the tyre bead section 30 of crown 10 both sides.Be provided with curtain yarn layer 20 in the inboard of this tire body 1, this curtain yarn layer 20 comprises outer curtain yarn 21 and internal layer curtain yarn 22.The two ends of curtain yarn layer 20 are to walk around the outside turnup bag of bead coil 41 to put formation tire lip 40, and curtain yarn layer 20 arranged outside on tire lip 40 have an anti-wiper 42.

The same with existing bike tyre structure, outer curtain yarn 21 both sides be walk around after bead coil 41 symmetrical overlapping at crown 10.Make crown 10 centers have three layers of outer curtain yarn 21, tyre bead section 30, tire lip 40 have two outer layers curtain yarn 21.

In order to improve the tire carcass integral rigidity, in the internal layer increase of outer curtain yarn 21, an internal layer curtain yarn 22 is set, internal layer curtain yarn 22 two ends are by the interior outside turnup of bead coil 41 of walking around, and its two ends extend to tyre bead and have a height h.At this moment, crown 10 centers have three layers of outer curtain yarn 21 and one deck internal layer curtain yarn 22, tyre bead section 30 upper edges have two outer layers curtain yarn 21 and one deck internal layer curtain yarn 22, and tyre bead section 30 lower edges, tire lip 40 have two outer layers curtain yarn 21 and two-layer internal layer curtain yarn 22.

Internal layer curtain yarn 22 two ends extended height h are set to 30% ~ 60% of tyre bead section height H.If height h is less than 30% of tyre bead section height H, the rigidity of tire can not obtain enough, effectively raising; If height h is greater than 60% of tyre bead section height H, tire weight increases too many.

in addition, as shown in Figure 4, fiber orientation and the tire circumferential direction of outer curtain yarn 21 are formed with angle α, and the fiber orientation of internal layer curtain yarn 22 and tire circumferential direction are formed with angle β, and outer curtain yarn 21 is with internal layer curtain yarn 22 fiber orientation both, and intersecting fits configures, angle α and angle β are set to respectively 40 degree between 60 degree, so can make the outer curtain yarn 21 of intersection applying and the fiber orientation of internal layer curtain yarn 22 be approximate orthogonal state, whole curtain yarn layer 20 is formed closely, solid net structure, but the carcass strength of reinforced tire, promote anti-high load capacity, the performance of high impact forces.

Tire lip 40 is arranged on wheel rim, often is squeezed, rubs, and for avoiding even falling car danger because the tire lip destroys to cause to blow out, needs to improve tire lip rigidity.As shown in Figure 6, stick on respectively anti-wiper 42 at the tire lip 40 of both sides, this anti-wiper 42 is arranged on the outside of curtain yarn 21, and its two ends are walked around bead coil 41 and extended to respectively tyre bead, tire has height h1, h2 inside.Height h1, height h2 all need be set to be less than or equal to 30% of tyre bead section 30 height H, if the two ends extended height is too high, the tire lip is wrapped by too hard, is difficult for falling into the wheel rim seat during mounting tyre, causes dress tire difficulty.

After using the utility model technology, the rigidity of the crown part 10 of tire, tyre bead section 30 and tire lip 40 obtains directly, effectively strengthens.Make the crown part 10 of tire have good earth-catching property, violent flexural deformation can be carried for a long time in tyre bead section 30, and tire lip 40 is difficult for taking off lip, is fit to high blast condition of service.Reach under the badness such as high load capacity, HI high impact and use safely, and the purpose of life-saving.

The scheme that the utility model tire discloses not only can be used as the structural improvement of bike tyre, also can be used as heavy type Electrical Bicycle tire and uses, and all can reach aforesaid result of use.

Claims

1. the bike tyre structure of an improvement, this tire comprises crown part, is positioned at the tyre bead section of crown both sides, be provided with curtain yarn layer at tire body, the two ends of curtain yarn layer are to walk around the outside turnup bag of bead coil to put formation tire lip, and the curtain yarn layer arranged outside on the tire lip has an anti-wiper; It is characterized in that: curtain yarn layer comprises outer curtain yarn and internal layer curtain yarn, and internal layer curtain yarn two ends are also by the interior outside turnup of bead coil of walking around, and its two ends extend to the height that tyre bead has a tyre bead section height 30% ~ 60%; Described anti-friction cloth is arranged on the outside of curtain yarn, and its two ends are walked around bead coil and extended to respectively tyre bead, tire inside.

2. the bike tyre structure of improvement as claimed in claim 1, it is characterized in that: described crown center has three layers of outer curtain yarn and one deck internal layer curtain yarn, tyre bead section upper edge has two outer layers curtain yarn and one deck internal layer curtain yarn, and tyre bead subordinate edge, tire lip have two outer layers curtain yarn and two-layer internal layer curtain yarn.

3. the bike tyre structure of improvement as claimed in claim 1 is characterized in that: the fiber orientation of described outer curtain yarn and internal layer curtain yarn forms angle with tire circumferential direction respectively, and internal layer curtain yarn and outer curtain yarn fiber trend are and intersect configuration.

4. the bike tyre structure of improvement as claimed in claim 3 is characterized in that: the fiber orientation of described outer curtain yarn and internal layer curtain yarn respectively and the angle that forms of tire circumferential direction be set to 40 degree between 60 degree.

5. as the bike tyre structure of claim 1,2,3 or 4 described improvement, it is characterized in that: described anti-wiper two ends are walked around bead coil and are extended to tyre bead, tire height inside and all be less than or equal to 30% of tyre bead section height.