CN110561978A - High-durability inflation-free damping anti-bump tire - Google Patents

Abstract

The invention discloses a high-durability inflation-free shock-absorbing anti-bump tire, which belongs to the field of tires. It includes a carcass, and an annular groove is opened on the inner ring surface of the carcass along the circumferential direction; the wall surface of the groove protrudes toward the inner ring surface to form ribs; the wall surface of the groove is a smooth curved surface; the thickness of the ribs is from the The wall surface of the groove gradually decreases to the surface of the inner ring; the intersecting surface of the rib and the groove is a smooth transition surface; the rib is evenly distributed in the groove. The invention reduces the weight of the carcass itself by opening grooves on the inner ring surface of the carcass, reduces the manufacturing cost of the carcass, and forms a cavity structure that is not easily damaged in the carcass, effectively absorbing shocks, and the carcass has high durability. Ribs are set on the wall of the groove to speed up the rebound recovery of the groove structure when the carcass is impacted, and at the same time reduce the degree of softening and deformation of the carcass in hot environments and reduce rolling resistance. It has simple structure, reasonable design and easy manufacture. The advantages.

Description

A high-durability air-free shock-absorbing anti-bump tire

technical field

The invention belongs to the field of tires, and more specifically relates to a high-durability air-free shock-absorbing anti-bump tire.

Background technique

With the prevalence of shared bicycles, it has led to the development of non-inflatable solid tires. This kind of tire is popular in the shared bicycle industry due to its advantages of no need for regular inflation, preventing sharp objects from puncturing waste carcass, and explosion-proof. However, this kind of solid tire also has its own advantages. Disadvantages: heavy weight, the weight of solid tires under the same model is greater than that of traditional inner tube tires; poor elasticity, lower shock absorption than traditional inner tube tires of the same model; large rolling resistance, especially in summer, after the solid tire becomes soft, the tire The ground area is increased, and the resistance is greatly increased when riding.

At present, in response to the shortcomings of solid tires, domestic manufacturers have made many different improvements, mainly in two directions: 1) from the material aspect to improve the weight and shape stability of the carcass after molding; 2) from the structure Changes are made to improve the weight and shock absorption of the carcass. The more common improvement is the solid tire with a hollow structure used by "Mobike". This hollow solid tire reduces the weight of the solid tire and makes the solid tire have a certain degree of shock absorption, but the hollow structure is prone to water or Impurities, due to long-term accumulation of impurities, are thrown out during driving and cause danger. In winter, water and impurities freeze in the hollow structure, resulting in weakened elasticity, increased weight, side slip, etc., and the hollow structure on the carcass is easy to cause carcass fatigue. The starting point of damage greatly reduces the durability of the solid carcass.

After retrieval, Chinese Patent Publication No.: CN 109803837 A, publication date: May 24, 2019, discloses an airless tire comprising a hub with a plurality of radial spokes and an opening configured to accommodate The axle buffer unit is located on the radially outer side of the hub, and the buffer unit includes: an inner edge including a radial inner surface engaged with the hub; an outer edge including a radial outer surface; a plurality of curved compression spokes configured to bend in response to radial compression of the tire, each curved compression spoke extending between the inner edge and the outer edge; and a plurality of curved holes, each curved hole in the extending between the inner edge and the outer edge; wherein each of the curved compression spokes is circumferentially defined by at least two of the curved holes; engaging the radially outer surface of the outer edge of the frame; and a tread positioned radially outward of the frame, the tread being secured to the frame and configured to contact the surface. In this application, multiple curved holes are formed on the side of the carcass to reduce the weight of the solid carcass and achieve the effect of shock absorption and reduction of rolling resistance. After a period of time, the weight of the tire increases, the balance decreases, and the accumulation of debris may damage the structure of the carcass, resulting in a reduction in the service life of the tire.

Contents of the invention

1. Problems to be solved

Aiming at the problems of high rolling resistance, poor shock absorption, and insufficient durability of solid tires in the prior art, the present invention provides a high-durability air-free, shock-absorbing, and anti-bump tire. Through the improvement of the carcass structure, the shock absorption of the tire is increased. Anti-top performance and reduced rolling resistance, the durability of the tire is greatly improved.

2. Technical solution

In order to solve the above problems, the present invention adopts the following technical solutions.

A high-durability air-free shock-absorbing anti-bump tire, including a carcass, an annular groove is formed on the inner ring surface of the carcass along the circumferential direction; the wall surface of the groove protrudes toward the inner ring surface to form ribs .

There is a ring of grooves on the inner ring surface of the carcass along the circumferential direction. This groove structure reduces the weight of the carcass, reduces the rolling resistance, and saves the manufacturing cost of the carcass. Since the groove structure faces the inner ring surface , After the rim is assembled on the carcass, the groove structure is protected in the rim, so there will be no problem of debris accumulation, and the groove will not become the starting point of carcass aging damage, so the effective service life of the carcass It is guaranteed that the durability is greatly increased. The groove structure and the carcass form a cavity structure. When encountering bumps, the carcass part from the tread to the groove is deformed and restored, effectively buffering the impact force, thus achieving Damping effect, further, this plan protrudes on the wall surface of the groove structure with several ribs, the size of the ribs does not exceed the inner ring surface, formed in the groove structure, due to the softening property of the solid carcass preheating , in hot climates, the softening and deformation will lead to an increase in the tread area, and the rolling resistance will greatly increase during driving. Through the raised rib structure of this scheme, the raised rib is equivalent to a reinforcing rib, which strengthens the structural shape of the groove. On the one hand, when the vibration comes, under the support of the convex ribs, the groove structure can rebound as soon as possible, so that the carcass can return to its original shape as soon as possible, increasing the stability of driving. The support and reinforcement function can minimize the deformation of the carcass when it is heated and softened, and reduce the rolling resistance.

Further, the wall surface of the groove is a smooth curved surface.

The groove structure on the smooth surface has a more uniform dispersion effect on the impact force, and there is no place where the stress is concentrated on the smooth surface. Compared with the groove formed by the intersecting wall surface, the stress on the intersecting part of the wall surface is relatively concentrated. When the carcass is used, Stress concentration is more prone to fatigue damage, which will affect the life of the entire carcass. The groove structure of the smooth curved surface of this scheme can evenly disperse the impact force when it comes, the shock absorption effect is better, and the effective life is longer. Long.

Further, the thickness of the rib gradually decreases from the wall surface of the groove to the surface of the inner ring.

The structure of the ribs is set to gradually decrease from the groove wall surface to the inner ring surface, so that when the carcass is being formed, it is easier to demould the middle mold core used to form the groove and the rib structure, so that the carcass The molding rate is higher, and the production cost is further reduced.

Further, the intersecting surface of the rib and the groove is a curved surface with a smooth transition.

By making the intersecting surface of the convex rib and the groove a smooth transition surface, the intersection of the convex rib and the groove is prevented from aging damage due to concentrated stress, and the service life of the structure of the groove and the convex rib is prolonged.

Further, the ribs are evenly distributed in the groove.

By evenly distributing the ribs in the grooves, the balance of the carcass is guaranteed, the riding stability is strong, and the riding experience is further enhanced.

Further, the bead is a sheet bead, which is a sheet structure formed by protruding from the wall surface of the groove toward the inner ring surface.

The flaky ribs of this solution are easy to form during carcass processing, and the mold cores used to form the ribs and grooves are easy to demould, and the formed flaky structure is small in size and light in weight, which is conducive to reducing rolling resistance. At the same time, it can effectively provide shape support for the groove cavity structure of the carcass to ensure the timeliness of rebound after the carcass is stressed.

Further, the rib is a cross rib, which is a cross-shaped structure formed on the wall surface of the groove protruding toward the inner ring surface.

The cross-shaped ribs stably support the deformation of the tread and also stably support the structure of the carcass part of the sidewall and the shoulder. When the impact force is transmitted from the shoulder or the sidewall, the cross ribs are connected with the grooves to form The structure buffers and absorbs vibrations, and at the same time promotes the rapid recovery of the carcass, further improving the stability of the carcass of the present application during use.

Further, the intersection of the intersecting ribs is a smooth transition surface.

When the cross connection of cross ribs is an angular transition, cracks are prone to appear at the cross connection in the long-term environment where the shoulder and sidewall are subjected to impact force. Over time, the structure of the cross ribs is damaged and fails, and the cracks are easy to spread to the grooves On the wall surface, the damage of the carcass is accelerated, which affects the service life of the carcass. The cross-beam structure of this scheme has a smooth transition at the cross-connection, which has a better buffering and vibration-absorbing effect on the impact force from the shoulder and sidewall, and makes the cross-connection There is no stress concentration point at the cross joint, which greatly slows down the damage speed of the cross rib structure and increases the service life of the carcass of the cross rib structure. The yield rate of body production is high.

Further, a semi-cystic structure is formed between the rib wall and the groove wall.

The hemispherical cavity structure in this scheme is a hemispherical cavity structure, through the wall surface of the convex rib and the wall surface of the groove, a hemispherical depression shaped like a cavity is formed on the inner ring surface of the carcass. Ellipsoid shape, the structure formed between ribs and grooves has excellent cushioning and shock absorption performance. When the impact force from the tread passes through the carcass to the wall surface of the hemispherical cavity structure, the wall surface with smooth and uniform curvature will absorb the impact force. Scattered and released, the impact force has been consumed a lot when it is transmitted to the inner ring surface of the carcass; at the same time, the spherical wall structure avoids the sharp structure and rigid constraints that are prone to stress concentration points at the joints between the ribs and the grooves, so that the carcass The grooves and ribs on the ring surface have a longer service life.

Further, the half-cell structure is evenly arranged on the inner ring surface of the carcass along the circumferential direction, and the half-cell structure is arranged at least one turn.

In order to maintain the uniformity of the shock absorption and buffering effect during the use of the carcass and ensure the stability of riding, the hemispherical cavity structure in this solution is evenly arranged on the inner ring surface of the carcass, and is arranged around the carcass in the circumferential direction At least one lap, the high-durability non-inflatable shock-absorbing anti-bump tire of this scheme is arranged with two hemispherical cavity structures. The better, and the multi-circle hemispherical cavity structure is arranged. When the tread is in contact with the road surface and the impact force is transmitted, the hemispherical cavity structure arranged side by side can share the impact force for buffering, which increases the energy consumption of the impact force. Moreover, the maximum stress on the single hemispherical cavity structure is reduced, further increasing the durability of the carcass.

3. Beneficial effects

Compared with the prior art, the beneficial effects of the present invention are:

(1) The high-durability non-inflation shock-absorbing anti-top tire of the present invention reduces the weight of the carcass itself by opening grooves on the inner ring surface of the carcass, reduces the manufacturing cost of the carcass, and forms an indestructible cavity in the carcass Structure, effective shock absorption, and high durability of the carcass. By setting ribs on the wall of the groove, the rebound recovery of the groove structure is accelerated when the carcass is impacted, and at the same time, the degree of softening and deformation of the carcass in hot environments is reduced. small rolling resistance;

(2) The high-durability non-inflation shock-absorbing anti-top tire of the present invention has a smooth curved surface structure with no stress concentration points, and can evenly disperse the impact force when it comes, so the shock absorption effect is better and the effective life is longer. ;

(3) In the high-durability air-free shock-absorbing and anti-top tire of the present invention, the structure of the ribs is set to gradually decrease from the wall surface of the groove to the inner ring surface, so that when the carcass is formed, it is used for forming the groove and the inner ring surface. The demoulding of the middle mold core with convex rib structure is easier, which makes the molding rate of the carcass higher and the production cost is further reduced;

(4) In the high-durability non-inflation shock-absorbing anti-top tire of the present invention, by making the intersecting surface of the rib and the groove a smooth and transitional curved surface, the intersection of the rib and the groove is prevented from being aged and damaged by concentrated stress, Extend the service life of the groove and rib structure;

(5) In the high-durability non-inflation shock-absorbing anti-top tire of the present invention, the convex ribs are evenly distributed in the grooves, so that the balance of the carcass is guaranteed, the riding stability is strong, and the riding experience is further increased;

(6) In the high-durability air-free shock-absorbing and anti-top tire of the present invention, the ribs of the sheet structure are easy to form during carcass processing, and the mold cores used to form the ribs and grooves are easy to demould, and the formed sheet The shape structure is small in size and light in weight, which is beneficial to reduce rolling resistance, and can effectively provide shape support for the groove cavity structure of the carcass to ensure the timeliness of rebound after the carcass is stressed;

(7) In the high-durability air-free shock-absorbing and anti-top tire of the present invention, the intersecting ribs stably support the tread deformation while stably supporting the carcass part structure of the sidewall and the shoulder. Or when the impact force is transmitted from the sidewall, the structure formed by the connection of the intersecting ribs and the grooves can buffer and absorb vibrations, and at the same time promote the rapid recovery of the carcass, further improving the stability of the carcass of the present application during use;

(8) The high-durability non-inflation shock-absorbing and anti-top tire of the present invention has a smooth transition at the cross-joint of the cross-beam structure, and has a better cushioning and vibration-absorbing effect on the impact force transmitted from the shoulder and sidewall, and makes the cross-joint stress-free Concentrated point greatly slows down the damage speed of the cross rib structure and increases the service life of the carcass of the cross rib structure. At the same time, when the rib structure with a smooth transition at the cross connection is formed, the mold core is easy to demould, and the carcass is produced. high yield;

(9) In the high-durability non-inflation shock-absorbing anti-top tire of the present invention, the semi-cystic structure reduces the weight of the carcass and saves the cost of carcass manufacturing materials. It is more stable when running, and the curvature of the wall surface of the hemispherical cavity structure is smooth and uniform, and the service life of the carcass structure is longer;

(10) In the high-durability non-inflation shock-absorbing anti-top tire of the present invention, the semi-cystic structure is evenly arranged on the inner ring surface of the carcass to maintain the uniformity of the shock-absorbing and buffering effect during the use of the carcass and ensure the stability of riding ; Arrange at least one circle along the circumference of the carcass. When the tread contacts the road surface and transmits an impact force, the side-by-side semi-cystic structure can share the impact force for buffering, increasing the energy consumption of the impact force, and Reduce the maximum stress on a single semi-cystic structure, further increasing the durability of the carcass;

(11) The high-durability air-free, shock-absorbing and anti-top tire of the present invention can complete the production of the carcass of the present application in one mold clamping operation through the cooperation of the upper, middle and lower molds, which greatly simplifies the manufacturing process of the hollow tire. The operation is convenient, the production efficiency is high, and the carcass formed by this mold has no splicing joints, the whole carcass is integrally formed, and the balance is high; there are installation grooves on the jointing surfaces of the upper and lower molds, so that each middle The mold core can be accurately positioned and placed to further improve the pass rate of the carcass products and ensure the product quality;

(12) The present invention is simple in structure, rational in design, easy to manufacture.

Description of drawings

Fig. 1 is the cross-sectional view of the high-durability air-free shock-absorbing and anti-top tire of embodiment 1;

Fig. 2 is the schematic diagram of the cross-section of the high-durability air-free shock-absorbing and anti-top tire of embodiment 1;

Fig. 3 is the sectional view of the high-durability air-free shock-absorbing anti-top tire of embodiment 3 and embodiment 6;

Fig. 4 is the schematic diagram of the cross-section of the high-durability air-free, shock-absorbing, and anti-top tires of Embodiment 3 and Embodiment 6;

Figure 5 is an enlarged view of A in Figure 3;

Fig. 6 is an enlarged view at A of the high-durability non-inflation shock-absorbing anti-top tire of embodiment 7;

Fig. 7 is a sectional view of the mold set of the present invention;

Fig. 8 is a schematic diagram of the middle mold core of the present invention;

Fig. 9 is a sectional view of the middle mold core of the present invention;

Fig. 10 is a schematic cross-sectional view of the high-durability non-inflation shock-absorbing anti-top tire of embodiment 9;

Fig. 11 is a schematic cross-sectional view of the high-durability non-inflation shock-absorbing anti-top tire of embodiment 10;

Figure 12 is an enlarged view at Figure 10B in Example 11;

FIG. 13 is an enlarged view of FIG. 10B in Embodiment 11.

In the picture:

1. Carcass; 10. Inner ring surface; 11. Groove; 12. Rib; 120. Rib; 121. Intersecting rib; 123. Semi-cystic structure;

2. Mold group; 20, upper mold; 200, cavity; 201, installation groove; 21, middle mold core; 210, base; 211, groove mold; 212, rib mold; 22, lower mold.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

Example 1

As shown in Figures 1 and 2, a high-durability air-free shock-absorbing anti-bump tire includes a carcass 1, and an annular groove 11 is opened on the inner ring surface 10 of the carcass 1 along the circumferential direction; Ribs 12 are formed on the wall surface of the groove 11 protruding toward the direction of the inner ring surface 10 .

Since the solid tire does not have an inner tube, the entire carcass is heavy, the driving energy consumption is large during use, and there is no effective shock absorption structure, so the use experience is very poor. Although the improved carcass structure with side openings reduces the weight of the carcass The weight improves the shock absorption, but the side opening is easy to accumulate sundries, the shock absorption effect is gradually lost, and the side opening accelerates the aging of the carcass, reducing the effective service life. The high-durability air-free shock-absorbing anti-top tire of this embodiment On the inner ring surface 10 of the carcass 1, there is a ring of grooves 11 along the circumferential direction. The structure of the groove 11 is opened facing the inner ring surface 10. After the rim is assembled on the carcass 1, the structure of the groove 11 is protected in the rim, so there will be no problem of debris accumulation, and the groove 11 will not become a carcass 1 The starting point of aging, so that the life of the carcass 1 is longer than that of the existing shock-absorbing solid carcass, and the durability is higher. The structure of the groove 11 and the carcass 1 form a cavity structure. When encountering bumps, The part of the carcass 1 from the tread to the groove 11 deforms and recovers, which effectively buffers the impact force, thereby achieving the shock absorption effect. Further, in this embodiment, a number of protrusions are provided on the wall surface of the groove 11 structure. Ribs 12, the size of ribs 12 does not exceed the inner ring surface 10, formed in the structure of the groove 11, due to the softening property of the solid carcass 1 preheating, in hot climates, the softening deformation leads to an increase in the tread area. The rolling resistance will increase greatly during driving. Through the rib 12 structure of this embodiment, the rib 12 is equivalent to a reinforcing rib, which strengthens the structural shape of the groove 11. On the one hand, when the vibration comes, the Under the support of 12, the structure of the groove 11 can rebound as soon as possible, so that the carcass 1 can return to its original shape as soon as possible, increasing the stability when driving. The degree of deformation of the carcass 1 when heated and softened reduces the rolling resistance.

The high-durability air-free, shock-absorbing, and anti-top tire of this embodiment reduces the weight of the carcass 1 itself and reduces the manufacturing cost of the carcass 1 by providing grooves 11 on the inner ring surface 10 of the carcass 1 , and can be installed inside the carcass 1. Form a cavity structure that is not easy to damage, and effectively absorb shocks. By setting ribs 12 on the wall of the groove 11, the rebound recovery of the structure of the groove 11 when the carcass 1 is impacted is accelerated, and at the same time, the softening and deformation of the carcass 1 in a hot environment is reduced. The degree of rolling resistance is reduced.

Example 2

As shown in Figures 1 and 2, the high-durability air-free shock-absorbing anti-knock tire of this embodiment is further improved on the basis of Embodiment 1, and the wall surface of the groove 11 is a smooth curved surface.

The structure of the groove 11 on the smooth surface has a more uniform dispersion effect on the impact force, and there is no place where the stress is concentrated on the smooth surface. Compared with the groove 11 formed by the intersecting wall surface, the stress on the intersecting part of the wall surface is more concentrated. In the carcass 1 When in use, fatigue damage is more likely to occur at the place where the stress is concentrated, thereby affecting the life of the entire carcass 1. The groove 11 structure of the smooth curved surface of this embodiment can evenly disperse it when the impact force is transmitted, and the effective life is longer. Long.

Example 3

As shown in Figures 1 and 2, the high-durability air-free shock-absorbing anti-bump tire of this embodiment is further improved on the basis of Embodiments 1 and 2, and the thickness of the rib 12 is from the wall surface of the groove 11 to the The inner ring surface 10 gradually decreases.

By setting the structure of the ribs 12 to gradually decrease from the wall surface of the groove 11 to the inner ring surface 10, when the carcass 1 is being formed, the middle mold core 21 used to form the groove 11 and the ribs 12 structure The demoulding is easier, so that the molding rate of the carcass 1 is higher, and the production cost is further reduced.

Example 4

As shown in Figures 3 and 4, the high-durability air-free shock-absorbing anti-bump tire of this embodiment is further improved on the basis of Embodiment 3, and the intersecting surface of the rib 12 and the groove 11 is a smooth transition surface.

The applicant found in experiments that for the ribs 12 directly formed on the surface of the groove 11, the wall surface of the groove 11 is a smooth curved surface, and the intersection of the ribs 12 and the connecting surface of the groove 11 is an angular transition, as shown in Figure 2 As shown, after the carcass 1 of this structure is used in bumpy road conditions for a period of time, cracks will appear at the connection between the ribs 12 and the grooves 11, and the ribs 12 will fall off from the wall of the groove 11, even if the grooves 11 and ribs 12 are integrally formed carcass 1. This situation will also occur after being used for a period of time in bumpy road conditions. The generation of cracks makes the wall surface of the groove 11 structure no longer smooth, so that the cracks on the wall surface are subjected to concentrated stress. It is easier to age in the middle of the carcass 1, and it is easier to tear when bumping. At the same time, the falling ribs 12 in the groove 11 will also affect the balance of the carcass 1 when it is used. These defects cannot be directly observed outside the carcass 1. The safe use of the carcass buries hidden dangers. By analyzing the mechanism of the above-mentioned carcass 1 being damaged by force, this embodiment makes further improvements to the structure of the carcass 1. The intersection of the groove 11 and the connecting surface of the rib 12 is a smooth transition surface. In this structure, the structure of the groove 11 in the carcass 1 is a curved surface, and there is no stress concentration point, which can not only provide the carcass 1 with a more effective impact buffering effect, but also make the structure of the groove 11 There is no point prone to fatigue damage, which further increases the durability of the carcass 1 and improves the effective service life.

Example 5

As shown in Fig. 1 and Fig. 2, the high-durability non-inflation shock-absorbing anti-knock tire of this embodiment is further improved on the basis of embodiments 3 and 4, and the ribs 12 are evenly distributed in the grooves 11 .

By evenly distributing the ribs 12 in the grooves 11, the balance of the carcass 1 is guaranteed, the riding stability is strong, and the riding experience is further enhanced.

Example 6

As shown in Fig. 3, Fig. 4 and Fig. 5, the high-durability non-inflation shock-absorbing anti-bump tire of the present embodiment is further improved on the basis of embodiment 5, and the rib 12 is a sheet rib 120, which is the The wall surface of the groove 11 is a sheet structure formed by protruding toward the direction of the inner ring surface 10 .

The rib 120 of this embodiment is a lamellar structure that is evenly distributed on the annular groove 11, and is arranged in the groove 11 in a ring like a valve. The function of the 12 structure reduces the weight of the carcass 1 as much as possible and reduces the rolling resistance, and the ribs 12 of the sheet structure are easy to form when the carcass 1 is processed, which is beneficial to the mold core for forming the ribs 12 and the grooves 11 demoulding.

Example 7

As shown in Figure 6, the high-durability air-free shock-absorbing anti-bump tire of this embodiment is further improved on the basis of embodiment 5, and the ribs 12 are intersecting ribs 121, which are the grooves on the wall surface of the groove 11. A cross-shaped structure protruding toward the inner ring surface 10.

The structure of ribs 12 in this embodiment is a cross-shaped protrusion formed on the wall surface of groove 11, and each cross rib 121 is evenly distributed on the wall surface of groove 11. When the carcass 1 is used on a bumpy road section, in addition to being affected by the In addition to the impact force from the tread 1 that is in contact with the road surface, it may also be affected by the impact force from the shoulder or the sidewall. The impact force from the tread 1 is easily recovered under the action of the ribs 121, and will not Affecting the stable operation of the carcass 1, the impact force from the shoulders or sidewalls is likely to cause dislocation deformation of the carcass 1, and the sheet-shaped rib 121 structure cannot quickly and effectively restore the deformed carcass 1, making The stability of the carcass 1 during operation is affected. The structure of the intersecting ribs 121 in this embodiment, the intersecting ribs 121 stably support the deformation of the tread, and at the same time, the structure of the carcass 1 part of the sidewall and the shoulder also Stable support, when the impact force is transmitted from the shoulder or sidewall, the structure formed by the connection of the intersecting ribs 121 and the groove 11 can buffer and absorb vibrations, and at the same time promote the rapid recovery of the carcass 1, further improving the stability of the carcass 1 of the present application. sex.

Example 8

As shown in FIG. 6 , the high-durability air-free shock-absorbing anti-knock tire of this embodiment is further improved on the basis of Embodiment 7, and the intersection of the intersecting ribs 121 is a smooth transition surface.

When the cross connection of the cross rib 121 is an angular transition, cracks are likely to appear at the cross connection under the long-term use environment where the shoulder sidewall is subjected to impact force. Over time, the structure of the cross rib 121 is damaged and fails, and the crack is easy to spread to On the wall surface of the groove 11, the damage of the carcass 1 is accelerated, which affects the service life of the carcass 1. The cross-joints of the cross ribs 121 in this embodiment are smoothly transitioned, and have a buffering and shock-absorbing effect on the impact force transmitted from the shoulder and sidewall. It is better, and there is no stress concentration point at the cross connection, which greatly slows down the damage speed of the cross rib 121 structure, increases the service life of the carcass 1 with the cross rib 121 structure, and at the same time, the smooth transition of the rib 12 structure at the cross connection During molding, the mold core is easy to demould, and the yield of the carcass 1 is high during production.

Example 9

As shown in Figure 10, the high-durability non-inflation shock-absorbing anti-bump tire of this embodiment is further improved on the basis of Embodiment 5, and a semi-cavity structure 123 is formed between the wall surface of the rib 12 and the wall surface of the groove 11. .

The semi-cystic cavity structure 123 of this embodiment is a hemispherical cavity structure, through the wall surface of the rib 12 and the wall surface of the groove 11, a hemispherical depression shaped like a cavity is formed on the inner ring surface of the carcass 1, as shown in the figure As shown in 10, the hemispherical shape includes hemispherical shape and hemispherical shape. The structure formed between the raised rib 12 and the groove 11 has excellent cushioning and shock absorption performance. The impact force from the tread passes through the carcass 1 to the hemispherical cavity. On the wall surface of the structure, the wall surface with smooth and uniform curvature will disperse and release the impact force, and the impact force will be consumed a lot when it reaches the inner ring surface of the carcass 1; There are sharp structures and rigid constraints that are prone to stress concentration points, so that the grooves 11 and ribs 12 on the inner ring surface of the carcass 1 have a longer service life.

The hemispherical cavity structure of this embodiment reduces the weight of the carcass 1 and saves the material cost of the carcass 1. The hemispherical cavity structure has excellent cushioning and shock absorption performance, making the carcass 1 more stable when riding, and the hemispherical The curvature of the wall surface of the cavity structure is smooth and uniform, and the service life of the carcass 1 structure is longer.

Example 10

As shown in Figure 11, the high-durability non-inflation shock-absorbing anti-bump tire of this embodiment is further improved on the basis of Embodiment 9, and the semi-cystic structure 123 is uniformly arranged on the inner ring surface of the carcass 1 along the circumferential direction , the semi-cystic structure 123 is provided with at least one turn.

In order to maintain the uniformity of the shock absorption and buffering effect of the carcass 1 during use and ensure the stability of riding, the hemispherical cavity structure in this embodiment is evenly arranged on the inner ring surface of the carcass 1, and along the Arrange at least one circle in the circumferential direction. The high-durability air-free shock-absorbing anti-bump tire of this embodiment is arranged with two hemispherical cavity structures. The more hemispherical cavity structures are arranged, the buffering and consumption effect on impact force The better it is, the better the shock absorption effect, and the multi-circle hemispherical cavity structure is arranged. When the impact force is transmitted from the contact between the tread and the road surface, the hemispherical cavity structure arranged side by side can share the impact force for buffering, which increases the impact force. The consumption of impact force energy reduces the maximum stress on a single hemispherical cavity structure, further increasing the durability of the carcass 1 .

Example 11

As shown in Fig. 12 and Fig. 13, the high-durability non-inflation shock-absorbing anti-bump tire of this embodiment is further improved on the basis of embodiment 5, and a semi-bag is formed between the wall surface of the rib 12 and the wall surface of the groove 11 cavity structure 123 .

The semi-cystic cavity structure 123 of this embodiment is a polygonal pyramidal cavity structure, through the wall surface of the rib 12 and the wall surface of the groove 11, a concave cavity shaped like a pyramid is formed on the inner ring surface of the carcass 1, as shown in Figure 12 The structure shown in Fig. 13 is a pentagonal pyramid and a hexagonal pyramid-shaped cavity respectively, and the joints of the edges of the semi-cystic cavity structure 123 are all smooth transitional curved surfaces. As the number of edges of the semi-cystic cavity structure 123 increases, the structure The shape is closer to the hemispherical cavity, and the shock absorption performance and durability performance are closer to the carcass 1 performance of the hemispherical cavity structure.

Further, in this embodiment, the semi-cystic structure 123 is uniformly arranged on the inner ring surface of the carcass 1 along the circumferential direction, and the semi-cystic structure 123 is provided at least one turn.

In order to maintain the uniformity of the shock absorption and buffering effect during the use of the carcass 1 and ensure the stability of riding, the polygonal pyramid cavity structure in this embodiment is evenly arranged on the inner ring surface of the carcass 1, and along the carcass 1 Arrange at least one circle in the circumferential direction of the semi-cystic structure 123. The more the number of semi-cystic structures 123 is arranged, the better the effect of buffering and consuming the impact force is, and the better the shock absorption effect is. When the impact force is transmitted from the contact with the road surface, the semi-cystic structures 123 arranged side by side can share the impact force for buffering, which increases the energy consumption of the impact force and reduces the maximum stress on a single semi-cystic structure 123, further increasing the impact force. Carcass 1 durability.

Example 12

As shown in Figure 7, Figure 8 and Figure 9, a mold set for making high-durability air-free shock-absorbing anti-top tires includes:

The upper mold 20 has a mold cavity 200 on its clamping surface, and the shape of the mold cavity 200 matches the shape of half of the carcass 1;

The middle mold core 21 is composed of an annular base 210 and a groove mold 211 and a rib mold 212 arranged on the outer ring surface of the base 210. The shape of the groove mold 211 is similar to that of the groove 11. Matching, the shape of the rib mold 212 matches the shape of the rib 12, the base 210 is placed on the mold surface, the groove mold 211 and the rib mold 212 are placed in the cavity 200 ;

The lower mold 22 , whose shape matches the shape of the upper mold 20 , is symmetrically arranged below the upper mold 20 .

The injection hole of the present embodiment is opened on the side wall of the upper mold 20, and communicates with the cavity 200 on the clamping surface of the upper mold 20. The injection hole can also be opened on the side wall of the lower mold 22, and the upper mold 20 and the lower mold 22 are closed. Finally, the mold cavity 200 forms a mold cavity in the shape of a complete carcass 1, the middle mold core 21 is placed between the upper and lower molds as a mold core, and the groove mold 211 and the rib mold 212 of the middle mold core 21 are partially placed in the mold cavity 200. Among them, the base 210 is partly left outside the cavity 200 to facilitate the removal of the middle mold core 21 after the carcass 1 is formed.

When the mold set 2 of this embodiment is used, the middle mold core 21 is placed on the clamping surface of the lower mold 22, the groove mold 211 and the rib mold 212 are located above the cavity 200, and the base 210 is partially placed on the mold clamping surface. On the surface, after placing the position of the middle mold core 21, close the upper mold 20, and then inject the rubber material through the injection hole. After the injection is completed, the carcass 1 in the mold cavity is formed, vulcanized, and the mold is opened, and the carcass 1 is removed. The middle mold core 21 is pulled out to obtain the hollow carcass 1 .

The mold group 2 of this embodiment, through the cooperation of the upper, middle and lower molds, can complete the production of the carcass 1 of the present application in one mold clamping operation, which greatly simplifies the manufacturing process of the hollow tire, is easy to operate, and has high production efficiency. Moreover, the carcass 1 formed by the mold has no splicing joints, and the whole carcass 1 is integrally formed with a high degree of balance.

Further, a mounting groove 201 is opened on the mold-mold surface in the middle of the cavity 200 of the upper mold 20 , and the shape of the mounting groove 201 matches the shape of the base 210 of the middle mold core 21 .

In the mold set 2 of this embodiment, on the clamping surface of the upper mold 20, the base 210 of the middle mold core 21 is provided with an installation groove 201, and the corresponding position of the lower mold 22 is also provided with an installation groove 201 correspondingly. It is convenient to place the middle mold core 21 before each mold closing. The base 210 of the middle mold core 21 is just stuck on the raised part of the mold clamping surface next to the installation groove 201, so that the middle mold core 21 can be accurately positioned and placed each time. Further improve the qualified rate of making carcass 1 products to ensure product quality.

The examples described in the present invention are only to describe the preferred implementation of the present invention, and are not intended to limit the concept and scope of the present invention. Variations and improvements should fall within the protection scope of the present invention.

Claims (10)

1. A high-durability air-free shock-absorbing anti-bump tire, comprising a carcass (1), characterized in that: the inner ring surface (10) of the carcass (1) is circumferentially provided with an annular groove (11 ); the wall surface of the groove (11) protrudes toward the inner ring surface (10) to form a rib (12). 2. A high-durability air-free shock-absorbing anti-bump tire according to claim 1, characterized in that: the wall surface of the groove (11) is a smooth curved surface. 3. A high-durability air-free shock-absorbing anti-bump tire according to claim 1 or 2, characterized in that: the thickness of the rib (12) is from the wall surface of the groove (11) to the inner ring surface (10) Decrease gradually. 4. A high-durability inflation-free shock-absorbing anti-bump tire according to claim 3, characterized in that: the intersecting surface of the rib (12) and the groove (11) is a curved surface with a smooth transition. 5. A high-durability inflation-free shock-absorbing anti-bump tire according to claim 4, characterized in that: the ribs (12) are evenly distributed in the grooves (11). 6. A high-durability inflation-free shock-absorbing anti-bump tire according to claim 5, characterized in that: the rib (12) is a rib (120), which is the wall surface of the groove (11) It is a sheet-like structure that protrudes toward the inner ring surface (10). 7. A high-durability inflation-free shock-absorbing anti-bump tire according to claim 5, characterized in that: the ribs (12) are intersecting ribs (121), which are the walls of the grooves (11) A cross-shaped structure formed by protruding upward toward the inner ring surface (10). 8. A high-durability inflation-free shock-absorbing anti-bump tire according to claim 7, characterized in that: the intersection of the intersecting ribs (121) is a smooth transitional curved surface. 9. A high-durability inflation-free, shock-absorbing, anti-top tire according to claim 5, characterized in that: a semi-cystic structure (123) is formed between the wall surface of the rib (12) and the wall surface of the groove (11) ). 10. A high-durability inflation-free, shock-absorbing, anti-top tire according to claim 9, characterized in that: the semi-cystic structure (123) is evenly arranged on the inner ring surface of the carcass (1) along the circumferential direction, The semi-cystic cavity structure (123) is provided with at least one turn.