CN213920560U - Tire with inner cavity in shape of Leluo triangle - Google Patents
Tire with inner cavity in shape of Leluo triangle Download PDFInfo
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- CN213920560U CN213920560U CN202023025621.5U CN202023025621U CN213920560U CN 213920560 U CN213920560 U CN 213920560U CN 202023025621 U CN202023025621 U CN 202023025621U CN 213920560 U CN213920560 U CN 213920560U
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Abstract
The utility model discloses a tire with inner cavity in the shape of a Leluo triangle, which belongs to the technical field of tire processing. The utility model discloses a tire that inner chamber is lai luo triangle-shaped shape, inner chamber supporting part has been seted up along its circumference to tire embryo strip core, the inner chamber supporting part is longitudinal section shape confined lai luo triangle-shaped inner chamber, be filled with elastic medium in the inner chamber, elastic medium is gaseous medium or solid medium to have the travelling comfort of support intensity and ride concurrently. The Lelo triangular inner cavities are arranged in a plurality of groups along the circumferential direction of the core part of the tire strip, are in a separated or tangent state in the tire strip, and are distributed centripetally or centrifugally at any tip end. The positions, distances and distribution states among the Lelo triangles are adjusted through factors such as the dead weight of the vehicle, the load, the actual environment, the speed limit and the like, so that the supporting force and the comfort degree in the tire riding process are balanced, and the optimal state is found.
Description
Technical Field
The utility model relates to a tire processing technology field, the more specifically tire that an inner chamber is lai luo triangle-shaped form that says so.
Background
The tire is divided into a pneumatic tire and a non-pneumatic tire, and is widely used in view of the fact that the conventional pneumatic tire is mature in production process, good in riding comfort and good in bearing capacity due to cushioning. However, as a large number of vehicle driving safety accidents are more and more caused by tire burst, abrasion and unstable running, the inflation-free tire has no inner tube, and the inflation-free tire has the advantages of high safety, energy conservation, environmental protection and the like, so that people pay more attention to the tire. The non-pneumatic tire is divided into a solid tire and a hollow tire, and the hollow tire greatly overcomes the defect of jolt caused by insufficient resilience in the riding process of the non-pneumatic tire. However, the existing hollow tire cannot well take the comfort of the riding process and the supporting strength of the tire into consideration.
The said triangle is a special one, i.e. the vertex of regular triangle is used as centre of circle, and its side length is used as radius to make circular arc, and the curved triangle formed from these three sections of circular arcs is called Leluo triangle. The characteristics of the Lelo triangle are: having the same width in any direction, i.e. free to rotate between two parallel lines at a distance equal to its arc radius a (equal to the side length of the regular triangle) and always remaining in contact with both straight lines. The combination of the Lelo triangle and the tire is worthy of exploration because the Lelo triangle has the characteristics of triangle stability and uniform stress of the whole circle and has better strength and stability.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
Intensity and comfort level to the tire among the prior art can not effectively compromise the scheduling problem, the utility model provides an inner chamber is the tire of lai luo triangle-shaped shape, and the tire embryo strip core of extruding through screw extruder is along its inner chamber supporting part of having seted up the head and the tail of running through all around, the inner chamber supporting part is confined lai luo triangle-shaped inner chamber for longitudinal section shape, lai luo triangle-shaped has triangle-shaped stability and the even characteristics of circular whole atress concurrently to be favorable to guaranteeing that the tire rides the in-process and have good support intensity, and the travelling comfort also can guarantee.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model provides an inner chamber is tire of lai luo triangle-shaped form, includes the tire embryo strip of extruding through screw extruder, the tire embryo strip includes child hat, child belly and side wall portion, the cladding of side wall portion is in the periphery of rim, the inner chamber supporting part has been seted up along its circumference to tire embryo strip core, the inner chamber supporting part is the sealed lai luo triangle-shaped inner chamber of longitudinal section shape, because lai luo triangle-shaped has triangle-shaped stability concurrently, circular whole atress is even, clear and definite atress directionality (every angle presents similar U and supports buffer structure) and characteristics such as matrix supporting action are not influenced to the increase cavity of relative furthest, and its load support intensity, travelling comfort and stability are all better.
According to the technical scheme, one tip of the inner cavity of the Lelo triangle is opposite to the tire crown, and after the tire is pressed in the riding process, due to the supporting effect of the U-shaped structure similar to the tip of the inner cavity of the Lelo triangle, stress concentration in the inner cavity of the Lelo triangle is reduced, so that pressure transmitted from the tire crown is dispersed to the tire side through the inner cavity of the Lelo triangle, and the supporting strength of the inner cavity of the tire is improved.
According to the further technical scheme, the distance from the tip of the inner cavity of the Lelo triangle to the tire crown is h1, the distance from the lowest point of the arc of the inner cavity of the Lelo triangle to the tire belly is h2, h1: h2 is 1.5-2: 1, and the inner cavity of the Lelo triangle is arranged closer to the rim, so that the pressure of a tire is easily buffered through the inner cavity of the Lelo triangle during riding; after the tire is pressed, the distance from the tip of the inner cavity of the Lelo triangle to the tire crown and the distance from the lowest point of the arc of the inner cavity of the Lelo triangle to the tire belly are both h3, so that the tire crown of the tire body is prevented from being crushed in the riding process, the riding is labor-consuming, and the power consumption loss is large.
According to the further technical scheme, a plurality of groups of the Lelo triangular inner cavities are arranged on the tire blank bar core part along the circumferential direction, the Lelo triangular inner cavities are in a separated or tangent state inside the tire blank bar, and the distance between the Lelo triangles is adjusted through the factors such as the self weight of a vehicle, the load, the actual environment and the speed limit, so that the supporting force and the comfort degree of the tire in the tire riding process are balanced, and the optimal state is found.
According to a further technical scheme, the Lelo triangular inner cavity comprises an inner cavity I, an inner cavity II and an inner cavity III, any tip of the inner cavity I, the inner cavity II and the inner cavity III is in a centripetal or centrifugal state, when the inner cavity is centripetal, the Lelo triangular inner cavity is far away from a tire crown, the number of main distributed tire walls is large, and the distribution area of tire flanks is small, so that the tire is prevented from being crushed due to overlarge pressure at the tire crown, the structural strength inside the tire is enhanced, the tire is relatively weak in comfort, labor-saving in riding and low in power consumption, and the tire is suitable for high-speed heavy-load tires (rear wheels); during centrifugation, the triangle-shaped inner chamber of a lai luo is more close and child belly distribution area is great apart from the child hat, has consequently increased the travelling comfort of riding relatively to a certain extent, nevertheless near the in-process child hat of riding is pressed by the pressure and is easily taken place the tire and compress flat, and then causes to ride comparatively hard, and the power consumption is higher, is applicable to low-speed light load tire (front wheel).
According to the further technical scheme, the inner cavity I, the inner cavity II and the inner cavity III are mutually tangent or distributed in a separated mode, stress concentration is easy to generate in a tangent state, heat is easy to generate in a riding dynamic state, accordingly, the strength of each cavity in the tire is reduced, the overall strength of the tire is influenced, the service performance and the service life of the tire are directly reduced, and the tire is suitable for being used under the environment condition of a gentle road with lower running speed; when the inner cavities are separated from each other, stress concentration caused by contact of the tips of the inner cavities can be avoided, the internal structural strength of the tire is further enhanced, the service performance and the service life of the tire are directly enhanced, and the inner cavity distribution in the form is suitable for the tire with high requirements on load and speed.
According to the further technical scheme, the elastic medium is filled in the inner cavity of the Leluo triangle, the elastic medium is a gas medium or a solid medium, the gas state is mainly inert gas such as nitrogen, the solid state is a non-metal elastic medium, and the elastic medium is mainly a foam and other related light buffer materials, so that the tire has good supporting strength in the riding process, can have riding comfort, can reduce the weight of the tire, and reduces the energy loss in the riding process.
According to the technical scheme, the elastic member is placed in the inner cavity of the Lelo triangle along the circumferential direction of the inner cavity, the outer portion of the elastic member is in contact with the inner wall of the inner cavity of the Lelo triangle and is partially embedded into the tire blank strips on the periphery of the inner cavity, the elastic member is a spring or a spring-like structural member and the like, so that when a tire is ridden and stressed, the inner portion of the inner cavity of the Lelo triangle plays a supporting role, and the elastic member is partially embedded into the tire blank strips on the periphery of the inner cavity, so that the elastic member is prevented from sliding in the inner cavity of the Lelo triangle to influence the stress uniformity of the tire.
According to the technical scheme, the edge parts of the inner cavity of the Lelo triangle are all arranged to be corrugated, so that a corrugated inner cavity is formed, the stress area of the inner cavity of the tire is increased, the inner hole space of the corrugated inner cavity of the linkage type is increased as far as possible on the premise that the corrugated inner cavity has the framework supporting strength, stress concentration is reduced, and the riding comfort and stability of the tire are enhanced.
Further technical scheme, the child crown has seted up the child crown recess along its circumference on the child crown, set up the child crown composite bed along its circumference in the child crown recess, the material of child crown composite bed is high wear-resisting, anti wet and slippery tread rubber material to solve tire joint department unevenness and the tire that causes in the mould pressing technology and beat, the fracture appears even and cause the potential safety hazard and can carry out its elimination or early warning scheduling problem in advance, the child crown department that will often contact friction with ground sets up the child crown composite bed, thereby increase the intensity and the wearability of tire, and then increase the life of tire, and wearing and tearing department can change alone, thereby avoid the change of whole tire, make manufacturing cost greatly reduced, resources are saved, the environmental protection.
A method for processing a tire with a Lelo triangular inner cavity comprises the following steps:
step one, extrusion: extruding a tire blank strip by a screw extruder, wherein a Leluo triangular inner cavity penetrating through the head and the tail is formed in the core part of the tire blank strip along the circumferential direction of the core part;
step two, filling: an elastic member is pre-installed in an inner cavity of the Lelo triangle, the outer portion of the elastic member is in contact with the inner cavity of the Lelo triangle and is partially embedded into a tire body which is circumferentially distributed, so that the elastic member is prevented from sliding in the inner cavity of the Lelo triangle to influence the stress uniformity of the tire, the elastic member plays a supporting role in the inner cavity of the Lelo triangle, the structural strength of the inner cavity of the Lelo triangle is enhanced, the riding comfort can be guaranteed, and the elastic member is a spring or a similar spring structural member and the like;
step three, preforming: cutting the tire blank strip according to the required size, and then butting and preforming the tire blank strip end to form a closed annular tire matrix;
step four, die assembly: opening an upper die and a lower die of a forming die, putting a tire matrix into a die cavity between the upper die and the lower die, and then closing the dies;
step five, filling and injecting: injecting a high-wear-resistance and anti-slippery rubber material into the tire crown groove through an injection pipe, so as to form a tire crown composite layer on the outer peripheral surface of the tire;
step six, vulcanization molding: crosslinking and vulcanizing the tire matrix in the forming mold to promote the tire crown composite layer to be crosslinked and combined with the tire crown groove to form a unified whole;
step seven, demolding: and (4) dismantling the upper die and the lower die, opening the die cavity, and taking out the molded tire.
A method for processing a tire with a Lelo triangular inner cavity comprises the following steps:
step one, extrusion: extruding a tire blank strip by a screw extruder, wherein a Leluo triangular inner cavity penetrating through the head and the tail is formed in the core part of the tire blank strip along the circumferential direction of the core part;
step two, preforming: cutting the tire blank strip according to the required size, and then butt-jointing and preforming the tire blank strip end to form a closed circular tire matrix;
step three, die assembly: opening an upper die and a lower die of a forming die, putting a tire matrix into a die cavity between the upper die and the lower die, and then closing the dies;
step four, filling: elastic media are filled into the Lelo triangular inner cavity from the outside of the tire through an injection device, and the elastic media are gas or foaming and other related light buffer materials, so that the weight of the tire is reduced, the energy loss in the riding process is reduced, the function of supporting the Lelo triangular inner cavity can be realized, and the tire is prevented from being crushed in the riding process;
step five, filling and injecting: injecting a high-wear-resistance and anti-slippery rubber material into the tire crown groove through an injection pipe, so as to form a tire crown composite layer on the outer peripheral surface of the tire;
step six, vulcanization molding: crosslinking and vulcanizing the tire matrix in the forming mold to promote the tire crown composite layer to be crosslinked and combined with the tire crown groove to form a unified whole;
step seven, demolding: and (4) dismantling the upper die and the lower die, opening the die cavity, and taking out the molded tire.
In the second step, after the tire matrix is placed in the mold cavity, the height of the tire body is higher than that of the mold cavity after the mold is closed, and gaps are reserved between the tire crown and the tire belly of the tire matrix and mold rings of the mold cavity, namely the distance from the tire belly (the bottom surface where the tire and the rim are attached) to the tire crown is less than or equal to the distance between the corresponding mold cavities, so that gaps are reserved in the circumferential direction after the tire strips are placed in the upper mold cavity and the lower mold cavity; the distance between the tire side parts (the upper thickness and the lower thickness) is larger than the height of the upper mold cavity and the lower mold cavity after mold closing, so that the tire can extend along the radial direction of the tire after pressing, and the inner structure of the tire blank strip is strengthened.
According to the further technical scheme, the Lelo triangular holes/holes are formed in the side portions of the tire body according to the actual requirements of the front and rear wheels of the tire body, the size of the wheels and the requirements of the actual environment for riding the tire body, and for the low-speed light-load tire (front wheel), the Lelo triangular holes/holes in the side portions of the tire body are sparsely distributed and have larger size; for a high-speed heavy load tire (rear wheel), the tire sidewall has a large distribution of rilo-triangular holes/holes and a small size.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a tire with a Leluo triangle-shaped inner cavity, the tire strip core is provided with an inner cavity supporting part along the circumferential direction, the inner cavity supporting part is of a Leluo triangle-shaped longitudinal section, and the intensity and the stability are both better because the Leluo triangle has the characteristics of triangle stability and uniform stress of the whole circular shape;
(2) the utility model discloses a tire with an inner cavity in the shape of a Leluo triangle, elastic media are filled in the inner cavity of the Leluo triangle, so that the tire has good supporting strength in the riding process and can have the riding comfort, the elastic media are gas media or solid media, the gas state is mainly inert gases such as nitrogen, the solid state is non-metal elastic media, and non-metal elastic components such as plastics or foaming and other related light buffer materials are mainly used, so that the tire has good supporting strength in the riding process, can have the riding comfort, can reduce the weight of the tire, and reduce the energy loss in the riding process;
(3) the utility model discloses a tire with an inner cavity in the shape of a Lelo triangle, an elastic component is placed in the inner cavity of the Lelo triangle along the circumferential direction of the inner cavity, the outer part of the elastic component is in contact with the inner wall of the inner cavity of the Lelo triangle and is partially embedded, so that the elastic component is prevented from sliding in the inner cavity of the Lelo triangle to influence the stress uniformity of the tire, when the tire is ridden, the elastic component plays a supporting role in the inner part of the inner cavity of the Lelo triangle, can also reduce the stress concentration generated by the stress of the tire, ensure the riding comfort and save the energy consumption generated by riding jolt, and is a spring or a similar spring structure component and the like;
(4) the utility model discloses a tire with an inner cavity in the shape of a Leluo triangle, wherein the edge part of the inner cavity of the Leluo triangle is arranged in a corrugated shape, so that a corrugated inner cavity is formed, and the inner cavity of the Leluo triangle in the communicated form is ensured to increase the inner hole space as much as possible under the premise of having the framework supporting strength, thereby reducing the stress concentration and enhancing the comfort and stability of the tire during riding;
(5) the utility model discloses a tire that inner chamber is the triangle-shaped of lyocell, one of them most advanced of lyocell triangle-shaped inner chamber and ripple type is just to the child hat, in the process of riding, the tire pressurized makes the child hat atress flatten the back, because the most advanced holding power of lyocell triangle-shaped inner chamber, thereby reduce the stress concentration in lyocell triangle-shaped inner chamber, thereby disperse the pressure that comes the transmission of child hat department to the sidewall portion through lyocell triangle-shaped inner chamber, thereby increase the support intensity of tire inner chamber, and lyocell triangle-shaped inner chamber and ripple type inner chamber can also guarantee that the tire is inside to have sufficient support intensity, thereby increase the life of tire;
(6) the utility model discloses a tire with a Leluo triangle-shaped inner cavity, the inner cavity of the Leluo triangle is arranged closer to the rim, so that when riding, the tire is easily buffered by pressure through the inner cavity of the Leluo triangle; after the tire is pressed, the distance from the tip end of the inner cavity of the Lelo triangle to the tire crown is consistent with the distance from the lowest point of the arc of the inner cavity of the Lelo triangle to the tire belly, so that the tire crown of the tire body is prevented from being crushed in the riding process, the riding is difficult, and the power consumption loss is large.
(7) The utility model discloses a tire that inner chamber is lai luo triangle-shaped shape, the child crown is last to have seted up the child crown recess along its circumference, set up the child crown composite bed along its circumference in the child crown recess, the material of child crown composite bed is high wear-resisting, anti wet and slippery tread rubber material to solve tire joint department unevenness and the tire that causes in the molding process beat, appear splitting even and cause the potential safety hazard and can carry out its elimination or early warning scheduling problem in advance, will often set up the child crown composite bed with ground contact friction's child department, thereby increase the intensity and the wearability of tire, and then increase the life of tire, and wearing and tearing department can change alone, thereby avoid the change of whole tire, make manufacturing cost greatly reduced, resources are saved, the environmental protection.
(8) The utility model discloses a tire with an inner cavity in the shape of a Lelo triangle, wherein a plurality of groups are arranged in the tire strip core part along the circumferential direction of the tire strip in the Lelo triangle inner cavity, each Lelo triangle inner cavity is separated or tangent inside the tire strip, any tip of each Lelo triangle inner cavity is in a centripetal or centrifugal state, and the distance between the Lelo triangles is adjusted through the self weight of the vehicle and the speed limit, so that the supporting force and the comfort degree of the tire are balanced, and the optimal state is found;
(9) the utility model discloses a tire with an inner cavity in the shape of a Lelo triangle, which is provided with a Lelo triangle hole/hole at the side part according to the actual requirements of the front and rear wheels of a vehicle body, the size of the wheel and the requirements of the actual environment for riding the vehicle body, the distribution of the Lelo triangle hole/hole at the side part is sparse and the size is large, and the tire is mainly used for low-speed light-load tires (front wheels); the tire side portion has a large distribution of the Lelo triangular holes/holes and a small size, and is mainly used for high-speed heavy-load tires (rear wheels).
Drawings
FIG. 1 is a schematic view of a vertical section of a tire according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic diagram of the tire cavity filling medium of FIG. 2;
FIG. 4 is a schematic view of the structure of the tire crown groove of the present invention;
FIG. 5 is a front view of FIG. 4;
FIG. 6 is a schematic structural diagram of the tire of FIG. 5 with a medium filled in the tire cavity and a crown composite layer filled in the crown groove;
FIG. 7 is a schematic view of the longitudinal section of FIG. 2;
FIG. 8 is a schematic view of the tire of FIG. 7 during riding in a stressed state;
FIG. 9 is a schematic view of a longitudinal section of a tire having a corrugated Lelo triangular interior cavity;
FIG. 10 is a schematic view of the tire of FIG. 9 during riding in a stressed state;
FIG. 11 is a schematic diagram showing the centripetal and tangential distribution of the lumens I, II and III;
FIG. 12 is a schematic diagram showing the centripetal and phase-separated distribution of the lumen I, the lumen II and the lumen III;
FIG. 13 is a schematic view of the distribution of the eccentric and tangential states of lumen I, lumen II and lumen III;
FIG. 14 is a schematic diagram showing the distribution of the centrifugal, phase-separated states of lumen I, lumen II and lumen III;
FIG. 15 is a schematic representation of the results of a longitudinal section of a tire with a spring placed inside the Lelo triangle cavity.
In the figure: 1-tire strip, 2-Lelo triangular cavity, 3-corrugated cavity, 4-elastic member, 11-tire crown, 12-tire belly, 13-tire sidewall, 21-elastic medium, 22-cavity I, 23-cavity II, 24-cavity III and 111-tire crown groove; 112-crown composite layer.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
Example 1
The tire with the inner cavity in the shape of the lelo triangle, as shown in fig. 1-2, comprises a tire strip 1 extruded by a screw extruder, wherein the tire strip 1 comprises a tire crown 11, a tire belly 12 and a tire side part 13, the tire side part 13 covers the periphery of a wheel rim, an inner cavity supporting part is arranged at the core part of the tire strip 1 along the circumferential direction of the tire strip, the inner cavity supporting part is a closed lelo triangle inner cavity 2 with a longitudinal section in the shape of a closed lelo triangle, and the lelo triangle has the characteristics of both triangle stability and uniform stress of a circular whole body, so that the tire has good strength and stability; by combining the material formula of the tire, the size of the single Luo triangular inner cavity 2 approximately accounts for 30-60% of the size of the section of the tire so as to ensure the load and comfort requirements of the tire, and if the load and comfort requirements are met, the higher the area of the Luo triangular inner cavity 2 is, the better the effect is. As shown in fig. 7-8, the tips of the rilo triangular inner cavity 2 face the tire crown 11, and in the riding process, after the tire is pressed, the stress concentration in the rilo triangular inner cavity 2 is reduced due to the supporting force of the tips of the rilo triangular inner cavity 2, so that the pressure transmitted from the tire crown is dispersed to the tire side portion through the rilo triangular inner cavity 2, the supporting strength of the tire inner cavity is increased, and the rilo triangular inner cavity 2 and the tire can also ensure that the tire has enough supporting strength, so that the service life of the tire is prolonged. As shown in fig. 4-6, crown groove 111 has been seted up along its circumference on the crown 11, set up crown composite layer 112 along its circumference in the crown groove 111, the material of crown composite layer 112 is high wear-resisting, anti wet and slippery tread rubber material, tire that causes is beated along its circumference to tire joint department unevenness in order to solve the mould pressing technology, even appear the fracture and cause the potential safety hazard and can carry out its elimination or early warning scheduling problem in advance, crown department that will often contact friction with ground sets up crown composite layer 112, thereby increase the intensity and the wearability of tire, and then increase the life of tire, and wearing and tearing department can change alone, thereby avoid the change of whole tire, make manufacturing cost greatly reduced, resources are saved, the environmental protection.
In the embodiment, the distance from the tip of the inner cavity 2 of the Lelo triangle to the tire crown 11 is h1, the distance from the lowest point of the arc of the inner cavity 2 of the Lelo triangle to the tire cavity 12 is h2, h1: h2 is 1.5-2: 1, and the inner cavity 2 of the Lelo triangle is arranged to be closer to a rim, so that the pressure of the tire is easily buffered through the inner cavity 2 of the Lelo triangle during riding; after the tire is pressed, the distance from the tip of the inner cavity 2 of the Lelo triangle to the tire crown 11 and the distance from the lowest point of the arc of the inner cavity 2 of the Lelo triangle to the tire belly 12 are both h3, so that the tire crown of the tire body is prevented from being crushed in the riding process, and the riding is labor-consuming and the power consumption loss is large.
Example 2
The tire with a cavity in the shape of a Lelo triangle in the embodiment has the same basic structure as the tire in embodiment 1, and is different and improved in that: as shown in fig. 3, the elastic medium 21 is filled in the cavity 2 of the lelo triangle, the elastic medium 21 is a gas medium or a solid medium, the gas state is mainly inert gas such as nitrogen, the solid state is a non-metal elastic medium, and the non-metal elastic member is mainly a light buffer material related to plastics or foaming, so that the tire has good support strength during the riding process, and can have riding comfort, reduce the weight of the tire, and reduce the energy loss during the riding process.
Example 3
The tire with a cavity in the shape of a Lelo triangle in the embodiment has the same basic structure as the tire in embodiment 2, and is different and improved in that: as shown in fig. 14, the elastic member 4 is disposed inside the reuleaux triangle inner cavity 2 along the circumferential direction thereof, and the outer portion of the elastic member 4 is in contact with the inner wall of the reuleaux triangle inner cavity 2 and is partially embedded in the tire blank strip 1 at the periphery of the inner cavity, so as to prevent the elastic member 4 from sliding in the reuleaux triangle inner cavity 2 and affecting the force uniformity of the tire. When the tire is ridden and stressed, the elastic member 4 plays a supporting role in the inner cavity 2 of the Lelo triangle, stress concentration generated by tire compression can be reduced due to the nature of the elastic member 4, riding comfort is guaranteed, energy consumption generated by riding bumping can be saved, and the elastic member 4 is a spring or a similar spring structure member and the like.
Example 4
The tire with a cavity in the shape of a Lelo triangle in the embodiment has the same basic structure as the tire in embodiment 3, and is different and improved in that: as shown in fig. 9, the side portions of the cavity 2 of the lelo triangle are all corrugated to form the cavity 3, so as to increase the stressed area of the cavity 2 of the lelo triangle, and ensure that the cavity 3 of the union type increases the inner hole space as much as possible on the premise of having the framework supporting strength, thereby reducing stress concentration and enhancing the riding comfort and stability of the tire.
Example 5
The tire with the inner cavity in the shape of a Lelo triangle in the embodiment has the same basic structure as the tire in the embodiment 4, and is different and improved in that: as shown in fig. 11 to 12, a plurality of groups of the cavities 2 of the lelo triangle are arranged in the core of the tire strip 1 along the circumferential direction, each of the cavities 2 of the lelo triangle is in a separated or tangent state in the tire strip 1, the tips of the cavities 2 of the lelo triangle are in a centripetal or centrifugal state, and the distance between the lelo triangles is adjusted by the factors such as the self weight of the vehicle, the load, the actual environment and the speed limit, so that the supporting force and the comfort degree of the tire in the riding process are balanced, and the optimal state is found.
In this embodiment, the rilo triangular inner cavity 2 includes an inner cavity I22, an inner cavity II23, and an inner cavity III24, where the inner cavity I22, the inner cavity II23, and the inner cavity III24 are distributed tangentially or separately, stress concentration is easily generated in a tangential state, and heat is easily generated in a riding dynamic state, so as to reduce the strength of each cavity inside the tire, affect the overall strength of the tire, directly reduce the service performance and the service life of the tire, and be suitable for a tire with a low running speed and used under an environmental condition of a smooth road; when the inner cavities are separated from each other, stress concentration caused by contact of the tips of the inner cavities can be avoided, the internal structural strength of the tire is further enhanced, the service performance and the service life of the tire are directly enhanced, and the inner cavity distribution in the form is suitable for the tire with high requirements on load and speed. Specifically, as shown in fig. 11, any tip of the inner cavity I22, the inner cavity II23 and the inner cavity III24 is in a centripetal state, and the inner cavities are in a tangential state of point contact, and the tips of the inner cavities are in contact with each other, so that stress concentration is easily generated, heat is easily generated in a dynamic state, the strength of each cavity inside the tire is reduced, the overall strength of the tire is affected, and the use performance and the service life of the tire are directly reduced; as shown in fig. 12, any tip of the inner cavity I22, the inner cavity II23 and the inner cavity III24 is in a centripetal state, and the inner cavities are separated from each other, so that stress concentration caused by contact of the tips is avoided, and the internal structural strength of the tire is further enhanced, and the inner cavity distribution in the form is suitable for tires with high requirements on load and speed;
as shown in fig. 13, any tip of the inner cavity I22, the inner cavity II23, and the inner cavity III24 is in a centrifugal state, and the inner cavities are in a tangential state of point contact, and the inner cavity I22 faces the tire crown 11, and the inner cavity distribution is closer to the tire crown 11 than the last distribution mode, so that the riding comfort is increased, and when the tire crown is pressed during riding, due to the property of the lailo triangle, the inner cavity I22 is not easily pressed, so that the structural strength inside the tire blank bar is increased, and the tire blank bar is suitable for tires such as bicycles or electric vehicles, which have lower load requirements and higher comfort requirements; further, as shown in fig. 14, any one of the tips of the inner cavity I22, the inner cavity II23 and the inner cavity III24 is in a centrifugal state, and the inner cavities are separated from each other, so that stress concentration caused by contact of the tips is avoided, the internal structural strength of the tire is further enhanced, and the distribution can also have riding comfort, so that the tire is in an optimal distribution state.
Example 6
The basic structure of the method for processing a tire with a Lelo triangle-shaped inner cavity of the embodiment is the same as that of the embodiment 5, and the differences and improvements are that: the method comprises the following steps:
step one, extrusion: extruding a tire blank strip 1 by a screw extruder, wherein a Leluo triangular inner cavity 2 penetrating through the head and the tail is formed in the core part of the tire blank strip 1 along the circumferential direction;
step two, filling: an elastic member 4 is pre-installed in the inner cavity 2 of the Lelo triangle, and the outer part of the elastic member 4 is in contact with the inner cavity 2 of the Lelo triangle and is partially embedded into a tire body which is distributed in the circumferential direction;
step three, preforming: cutting the tire blank strip 1 according to the required size, and then butt-jointing and preforming the tire blank strip 1 end to form a closed circular tire matrix;
step four, die assembly: opening an upper die and a lower die of a forming die, putting a tire matrix into a die cavity between the upper die and the lower die, and then closing the dies;
step five, filling and injecting: injecting a high-wear-resistant and anti-slippery rubber material into the crown groove 111 through an injection pipe, thereby forming a crown composite layer 112 on the outer circumferential surface of the tire;
step six, vulcanization molding: crosslinking and vulcanizing the tire matrix in the forming mold to promote the crown composite layer 112 and the crown groove 111 to be crosslinked and combined into a unified whole;
step seven, demolding: and (4) dismantling the upper die and the lower die, opening the die cavity, and taking out the molded tire.
In this embodiment, the elastic member 4 is a spring or a member with a spring-like structure, etc., and is placed in the cavity 2 of the reuleaux triangle before the tire blank 1 is butt-jointed and molded, the outer portion of the elastic member 4 is in contact with the inner wall of the cavity 2 of the reuleaux triangle, and is partially embedded in the tire blank 1 at the periphery of the cavity, when the tire is ridden and stressed, the elastic member 4 plays a supporting role in the cavity 2 of the reuleaux triangle, and can prevent the elastic member 4 from sliding in the cavity 2 of the reuleaux triangle to influence the stress uniformity of the tire, and in addition, due to the nature of the elastic member 4, the stress concentration caused by the pressure on the tire can be reduced, the riding comfort is ensured, and the energy consumption caused by the bumping of riding can be saved; in the fourth step, after the tire matrix is placed in the mold cavity, the height of the tire body of the tire matrix is higher than that of the mold cavity after the mold cavity is closed, and gaps are reserved among the tire crown 11, the tire belly 12 and the mold ring of the mold cavity, namely, the distance from the tire belly 12 (the bottom surface where the tire and the rim are attached) to the tire crown 11 is not more than the distance between the corresponding mold cavities, so that the gaps are reserved in the circumferential direction after the tire strips 1 are placed in the upper mold cavity and the lower mold cavity; the distance between the sidewall parts 13 (the upper and lower thickness) is greater than the height of the upper and lower die cavities after die assembly, so that the tire can extend along the radial direction of the tire after press fitting, and the internal structure of the tire blank strip 1 is strengthened.
Example 7
The basic structure of the method for processing a tire with a Lelo triangle-shaped inner cavity of the embodiment is the same as that of the embodiment 6, and the differences and improvements are that: the method comprises the following steps:
step one, extrusion: extruding a tire blank strip 1 by a screw extruder, wherein a Leluo triangular inner cavity 2 penetrating through the head and the tail is formed in the core part of the tire blank strip 1 along the circumferential direction;
step two, preforming: cutting the tire blank strip 1 according to the required size, and then butt-jointing and preforming the tire blank strip 1 end to form a closed circular tire matrix;
step three, die assembly: opening an upper die and a lower die of a forming die, putting a tire matrix into a die cavity between the upper die and the lower die, and then closing the dies;
step four, filling: filling the elastic medium 21 into the cavity 2 of the Lelo triangle from the outside of the tyre by an injection device;
step five, filling and injecting: injecting a high-wear-resistant and anti-slippery rubber material into the crown groove 111 through an injection pipe, thereby forming a crown composite layer 112 on the outer circumferential surface of the tire;
step six, vulcanization molding: crosslinking and vulcanizing the tire matrix in the forming mold to promote the crown composite layer 112 and the crown groove 111 to be crosslinked and combined into a unified whole;
step seven, demolding: and (4) dismantling the upper die and the lower die, opening the die cavity, and taking out the molded tire.
In this embodiment, in the third step, the elastic medium 21 is a gas medium or a solid medium, the gas state is mainly inert gas such as nitrogen, the solid state is a non-metal elastic medium, and the non-metal elastic member is mainly made of plastic or foam or other related light buffer materials, so that the tire has good support strength during the riding process, can have riding comfort, can reduce the weight of the tire, and reduces the energy loss during the riding process.
Example 8
The basic structure of the method for processing a tire with a Lelo triangle inner cavity of the present embodiment is the same as that of embodiment 7, and the differences and improvements are as follows: according to the actual requirements of front and rear wheels of a vehicle body, the size of the wheels and the requirements of the actual environment for riding the vehicle body, Lelo triangular holes/holes are formed in the side portion of the vehicle body, and for a low-speed light-load tire (front wheel), the Lelo triangular holes/holes in the side portion of the tire are sparsely distributed and have larger size; for a high-speed heavy load tire (rear wheel), the tire sidewall has a large distribution of rilo-triangular holes/holes and a small size. The Lelo triangular holes/holes are filled with foaming and other related light buffer materials, so that the supporting strength in the Lelo triangular holes/holes is improved, the supporting effect of the tire side portion 13 is enhanced, the weight of the tire body can be reduced as much as possible, the cost is saved, and the service life of the tire is prolonged.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a tire that inner chamber is reuleaux triangle-shaped form, includes tire embryo strip (1) that the screw extruder was extruded, tire embryo strip (1) is including child hat (11), child belly (12) and side wall portion (13), the cladding of child side portion (13) is in the periphery of rim, its characterized in that: an inner cavity supporting part is arranged on the core part of the tire strip (1) along the circumferential direction of the core part, and the inner cavity supporting part is a Lelo triangular inner cavity (2) with a closed longitudinal section.
2. A tire having an interior cavity in the shape of a reuleaux triangle as claimed in claim 1, wherein: the tip of the Lelo triangular inner cavity (2) faces towards the crown (11); the distance from the tip of the Lelo triangular inner cavity (2) to the tire crown (11) is h1, the distance from the lowest point of the arc of the Lelo triangular inner cavity (2) to the tire belly (12) is h2, and the ratio of h1 to h2 is 1.5-2: 1.
3. A tire having an interior cavity in the shape of a reuleaux triangle as claimed in claim 2 wherein: the Lelo triangular inner cavities (2) are arranged in a plurality of groups along the circumferential direction of the core part of the tire blank strip (1), and the Lelo triangular inner cavities (2) are in a separated or tangent state in the tire blank strip (1).
4. A tire having an interior cavity in the shape of a reuleaux triangle as claimed in claim 3 wherein: the Lelo triangular inner cavity (2) comprises an inner cavity I (22), an inner cavity II (23) and an inner cavity III (24), and any tip of the inner cavity I (22), the inner cavity II (23) and the inner cavity III (24) is in a centripetal or centrifugal state.
5. A tyre having an internal cavity in the shape of a Lelo triangle according to any one of claims 1 to 4, wherein: an elastic medium (21) is filled in the Lelo triangular inner cavity (2), and the elastic medium (21) is a gas medium or a solid medium.
6. A tyre having an internal cavity in the shape of a Lelo triangle according to any one of claims 1 to 4, wherein: an elastic member (4) is arranged in the Lelo triangular inner cavity (2) along the circumferential direction of the inner cavity, and the outer part of the elastic member (4) is in contact with the inner wall of the Lelo triangular inner cavity (2) and is partially embedded into the tire blank strip (1) on the periphery of the Lelo triangular inner cavity (2).
7. A tire having an internal cavity in the shape of a Lelo triangle as claimed in claim 5 or 6, wherein: the sides of the Lelo triangular cavity (2) are all arranged in a corrugated shape, so that a corrugated cavity (3) is formed.
8. A tire having an inner cavity in the shape of a reuleaux triangle as claimed in claim 7, wherein: a crown groove (111) is formed in the crown (11) along the circumferential direction of the crown, and a crown composite layer (112) is arranged in the crown groove (111) along the circumferential direction of the crown; the crown composite layer (112) is made of a high-wear-resistance and anti-wet-skid tread rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023025621.5U CN213920560U (en) | 2020-12-15 | 2020-12-15 | Tire with inner cavity in shape of Leluo triangle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023025621.5U CN213920560U (en) | 2020-12-15 | 2020-12-15 | Tire with inner cavity in shape of Leluo triangle |
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| CN213920560U true CN213920560U (en) | 2021-08-10 |
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| CN202023025621.5U Active CN213920560U (en) | 2020-12-15 | 2020-12-15 | Tire with inner cavity in shape of Leluo triangle |
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| Country | Link |
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| CN (1) | CN213920560U (en) |
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