CN107571689B - Inflation-free tire with elastic structure body - Google Patents
Inflation-free tire with elastic structure body Download PDFInfo
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- CN107571689B CN107571689B CN201710763201.0A CN201710763201A CN107571689B CN 107571689 B CN107571689 B CN 107571689B CN 201710763201 A CN201710763201 A CN 201710763201A CN 107571689 B CN107571689 B CN 107571689B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a inflation-free tire with an elastic structure body, which comprises an inner ring, an outer ring and an elastic structure body, wherein the elastic structure body is positioned between the inner ring and the outer ring and is respectively connected with the inner ring and the outer ring, the elastic structure body is formed by connecting at least one annular spherical structure body according to the corresponding axial direction of the inner ring, the annular spherical structure body is formed by at least 15 special-shaped tubular pieces distributed around an inner ring array, the special-shaped tubular pieces are formed by connecting at least two hollow spheres, the hollow spheres at the tail ends of the special-shaped tubular pieces are respectively connected with the inner ring, the outer ring and the outer ring, the adjacent hollow spheres in the special-shaped tubular pieces are communicated with each other to form a communicated hollow structure, and the hollow spheres are formed by splicing symmetrical cambered surfaces. The inflation-free tire of the invention improves the comfort and the durability on the basis of keeping running and enough loading by matching the special-shaped tubular piece and the connection relation thereof in the annular spherical structural body.
Description
Technical Field
The invention relates to the field of tire manufacturing, in particular to a inflation-free tire with an elastic structure body.
Background
Tires are a generic term for tires, and are typically made of abrasion resistant rubber materials, with a distinction being made between inflated and solid tires. The pneumatic tire has the defects that the rubber material of the tread is easy to wear, the tire burst is possible because of the pneumatic support, and the tire is uncomfortable and is easy to generate internal heat and can not run for a long time no matter the tire is a rubber solid tire or a polyurethane solid tire. Later, the research shows that the polyurethane material is adopted to manufacture the non-pneumatic tire of the integrally connected elastic annular body, so that the inflation is not needed, the running vehicle is ensured not to burst, the safety performance is ensured, and meanwhile, the elastic structural body has the comfort function of buffering. Both U.S. patent nos. 90102175.X (expired), 9310843. X (expired) describe a trapezoidal non-pneumatic tire made of polyurethane of elastomeric material having special properties, including a cylindrical outer ring and a narrower inner ring, and a plurality of circumferentially spaced flat ribs and a central flat web, each of which is integral with the web and has an included angle of 15 ° to 75 ° with the radial plane and an inner end intersecting the radial plane, the ribs being oppositely directed on either side of the web. A rubber tread is arranged on the outer surface of the outer ring. Wherein 93103843.X also describes the incorporation of inserts in the intermediate web of the non-pneumatic tire to optimize the enhancement of the comfort of the tire, however, even with a structure that optimizes the comfort inserts, it was found during testing that the polyurethane non-pneumatic tire (90 ° shore hardness) when the reinforcing ribs (support plates) and the radial surface of the tire form a small angle (15 °) is very bumpy during running; when the reinforcing rib (supporting plate) and the radial surface of the tire form a larger angle (46 degrees), the polyurethane inflation-free tire has better comfort when running (90 degrees of Shore hardness), but is still uncomfortable in the road shape with small stones or difficult to filter more vibration sources, the inflation-free tire which is borne and moves under the condition is easy to form an ellipse, the obvious energy consumption is larger than that of a normal rubber inflation tire when running for a long distance, the reinforcing rib (supporting plate) deforms too much to form an S-shaped, the heating value of the reinforcing rib with overlarge disassembly degree is obviously higher than that of other places, and the reinforcing rib starts to tear at the position with the largest deformation after running for a long time. Even if the reinforcing ribs (supporting plates) and the radial surfaces are continuously adjusted at various angles, the problem that the inflation-free tire has reasonable bearing capacity during running and relatively comfortable experience is solved, and meanwhile, the service life of the inflation-free tire is not shorter than that of the rubber inflation tire. The inflation-free tire is required to bear a larger amount of heavy objects, and has durability longer than that of the inflation tire, and meanwhile, the inflation-free tire is required to pass different road conditions more comfortably, so that the inflation-free tire is a problem to be solved in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing the inflation-free tire with the elastic structure body, which has the characteristics of good comfort under the condition of meeting the requirement of bearing property, and has the advantages of long service life, simple and convenient production and more environment-friendly product.
In order to solve the technical problems, the technical scheme of the invention is that the inflation-free tire with the elastic structure body comprises an inner ring, an outer ring and the elastic structure body, wherein the elastic structure body is positioned between the inner ring and the outer ring and is respectively connected with the inner ring and the outer ring, the elastic structure body is formed by connecting at least one annular spherical structure body in the axial direction corresponding to the inner ring, the annular spherical structure body is formed by at least 15 special-shaped tubular pieces distributed around an inner ring array, the special-shaped tubular pieces are formed by connecting at least two hollow spheres, the hollow spheres at the tail ends of the special-shaped tubular pieces are respectively connected with the inner ring and the outer ring, the adjacent hollow spheres in the special-shaped tubular pieces are communicated with each other to form a communicated hollow structure, the hollow spheres are hollow structures formed by splicing symmetrical cambered surfaces, the central points in the annular spherical structure body are connected with the inner ring by the same radial distance, and are mutually communicated, and the inner ring, and the elastic structure body is formed by high-molecular polymers with 55A-60D of Shore hardness; preferably, the shore hardness of the outer ring is 55A-90A, the shore hardness of the inner layer and the outer layer is 65A-60D, and even more preferably, the inner ring, the outer ring and the elastic structure body are all composed of the same high polymer, and the high polymer is selected from one of polyurethane and rubber.
Preferably, adjacent hollow spheres in the special-shaped tubular piece are connected through surface intersection or hollow tubular columns, and the intersection position is communicated.
Preferably, the center point in the annular spherical structure body has the same radial distance with the inner ring, and the adjacent hollow spheres are intersected through the surfaces or connected through the hollow tubular columns and communicated with each other; further preferably, the hollow tubular column is a linear hollow tubular column or an arc hollow tubular column.
Preferably, a radial line corresponding to a point at which the in-tube centerline of the shaped tubular member intersects the inner ring overlaps or intersects the in-tube centerline of the shaped tubular member at an acute angle.
Preferably, the width of the outer ring is larger than that of the inner ring, and the volume of the hollow sphere of the special-shaped tubular piece is gradually decreased from the outer ring to the inner ring.
Preferably, the elastic structure body is formed by sequentially arranging at least two annular spherical structure bodies in the axial direction corresponding to the inner ring, and the central points of the different annular spherical structure bodies are intersected with the hollow sphere passing surface or the hollow tubular column with the same radial distance with the inner ring, so that the intersecting position is communicated.
Preferably, the length of the hollow tubular column in the same special-shaped tubular piece is smaller than the length of the hollow tubular column between adjacent special-shaped tubular pieces in the connecting axial direction, and the diameter of the hollow tubular column in the same special-shaped tubular piece is larger than the diameter of the hollow tubular column between adjacent special-shaped tubular pieces in the connecting axial direction.
Preferably, the hollow spheres at corresponding positions in the adjacent special-shaped tubular pieces in the axial direction are intersected and communicated through the surfaces, and the adjacent hollow spheres in the special-shaped tubular pieces are connected and communicated through the hollow tubular columns.
Preferably, the elastic structure body is formed by sequentially arranging at least three annular spherical structure bodies in the axial direction corresponding to the inner ring, the special-shaped tubular member is formed by sequentially connecting at least three hollow spheres, adjacent hollow spheres in the axial direction are connected and communicated, a straight line parallel to an axial line can be formed through a center point, and at least one hollow sphere is connected with four hollow spheres adjacent to the periphery on the axial section.
Preferably, the elastic structure body is formed by sequentially arranging at least three annular spherical structure bodies in the axial direction corresponding to the inner ring, the hollow sphere in the latter annular spherical structure body is just positioned between two hollow spheres of the former annular spherical structure body and is connected with the two hollow spheres, the special-shaped tubular piece is formed by sequentially connecting at least three hollow spheres, and at least one hollow sphere is connected with six hollow spheres adjacent to the periphery on the axial surface; further preferably, the hollow spheres adjacent in the axial direction are penetrated by a smooth hollow column or a wavy hollow column having intersecting surfaces.
Preferably, at least one hollow sphere on each special-shaped tubular member is provided with a through hole; further preferably, in the same annular spherical structure, when hollow spheres at corresponding positions in adjacent special-shaped tubular members are mutually communicated, at least one hollow sphere is provided with a through hole, still further preferably, at least one special-shaped tubular member is provided with a through hole at a position connected with the inner ring, and a heat dissipation hole is arranged at a position corresponding to the through hole on the inner ring; when adjacent special-shaped tubular pieces in the same annular spherical structural body are not communicated with each other, each special-shaped tubular piece in the same annular spherical structural body forms a through hole at the position connected with the inner ring, and the positions corresponding to the through holes on the inner ring are all provided with heat dissipation holes.
Preferably, the outer ring is a polyurethane tread, and the tread is intersected with a hollow sphere connected with the annular spherical structure body in a surface mode. Further preferably, the inner side of the tread corresponding to the connecting position of the tread and the hollow sphere is hollowed out, and still further preferably, a tread pattern is arranged on the outer side of the tread corresponding to the hollowed-out position.
Preferably, the tread line on the axial section is parallel to the axial straight line or in an arc shape protruding outwards, and further preferably, the inner ring surface line where the same axial section is located is in the same arc shape as the tread line.
Preferably, the elastic structure body consists of an even number of annular spherical structure bodies, an inward groove is arranged in the middle of the tread line, and the radial section corresponding to the lowest point of the groove divides the elastic structure body into two symmetrical parts. Preferably, the hollow sphere is an integrated structure formed by an inner layer, an outer layer and a middle layer, the wall thickness of the hollow sphere formed by the inner layer, the outer layer and the middle layer is 1-80mm, and more preferably, the Shore hardness of the inner layer and the Shore hardness of the outer layer are both larger than those of the outer ring.
Preferably, the linear hollow tubular column is selected from one of a smooth linear hollow tubular column or a wavy linear hollow tubular column.
Preferably, the outer ring is made of polyurethane material, at least one layer of tread is arranged on the surface of the outer ring, and the Shore hardness of the tread is smaller than that of the outer ring; further preferably, the outer ring surface is provided with a layer of rubber tread.
By adopting the technical scheme, through the cooperation of the special-shaped tubular part in the annular spherical structural body, the special-shaped tubular part is arranged into a through hollow structure, under the condition that the inflation-free tire which keeps running and carrying the load as much as possible is round, the inflation-free tire still has good comfort and passing performance, meanwhile, the inflation-free tire has larger bearing performance, and through the cooperation of the connection relation of the special-shaped tubular part, the tire carrying the load can run for a long time and is not easy to be damaged, and the durability of the tire is improved.
Drawings
Fig. 1 is a radial surface structure diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic axial cross-section of embodiment 1 of the present invention.
Fig. 3 is a radial surface structure diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic axial cross-section of embodiment 2 of the present invention.
Fig. 5 is a schematic axial cross-sectional view of embodiment 3 of the present invention.
Fig. 6 is a schematic axial cross-section of example 4 of the present invention.
In the figure, 1-outer ring, 11-groove, 12-tread pattern, 2-inner ring, 21-through hole, 3-annular spherical structure, 31-hollow sphere, 311-heat dissipation hole, 32-arc hollow tubular column, 33-smooth linear hollow tubular column, 34-wave linear hollow tubular column.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In terms of material selection, the inner ring, the outer ring and the elastic structure body are made of high polymer materials with the Shore hardness of 55A-60D, and 60D can be converted according to a Shore hardness comparison table. In addition, the hollow sphere of the elastic structure body has a wall thickness of 1-80mm, and the thickness of the hollow sphere can be adapted according to the requirement.
The elastic structure body is formed by arranging an annular spherical structure body 3 according to the axial direction corresponding to the inner ring, the annular spherical structure body is formed by 15 special-shaped tubular pieces distributed around the inner ring array, meanwhile, the radial line corresponding to the point where the inner central line of the special-shaped tubular pieces and the inner ring intersect overlaps with the inner central line of the special-shaped tubular pieces, and the inner central line of the special-shaped tubular pieces is positioned on the radial line in the radial plane.
As shown in fig. 2, the special-shaped tubular member is formed by sequentially connecting two hollow spheres, the hollow spheres at the tail end of each special-shaped tubular member are respectively connected with the inner ring and the outer ring, wherein the hollow spheres are connected with the inner ring in a surface-intersecting mode, are also connected with the inner side of the outer ring in a surface-intersecting mode, and the intersecting positions of the hollow spheres and the inner ring and the intersecting positions of the hollow spheres and the outer ring form a surface. The adjacent hollow spheres in the single special-shaped tubular piece are intersected and communicated through the through surfaces, namely, the intersection position between the two hollow spheres is a plane, and the two hollow spheres are communicated at the intersection plane, namely, the whole special-shaped tubular piece forms a communicated hollow structure by removing the intersecting plane, and the hollow spheres in the embodiment are in the shape of a right hollow sphere.
In the single annular spherical structure, the center points are the same radial distance with the inner ring, the adjacent hollow spheres are connected and communicated with each other through the arc-shaped hollow tubular column 32, and the center lines in the arc-shaped hollow tubular column 32 at the same height and the center points of the corresponding hollow spheres just form an inner circle of the inner ring. The hollow spheres with center points on different concentric circles can be connected through the arc-shaped hollow tubular columns 32 with different lengths, so that the inner central line of the arc-shaped hollow tubular columns 32 corresponding to the hollow spheres on the concentric circles can also be completely overlapped with the outer edge of the circle center.
Since the inflation-free tire generates heat during long-term contact with the ground or long-term operation, and in order to enhance heat dissipation of the tire, the heat dissipation holes 311 may be provided on at least one hollow sphere of at least one profiled tubular member, and since the entire annular spherical structure is entirely penetrated to form a complete hollow structure, only one heat dissipation hole may be provided on one hollow sphere. In order to further enhance the heat dissipation performance, the heat dissipation holes can be arranged at the position where the hollow sphere is connected with the inner ring, and meanwhile, through holes aligned with the heat dissipation holes are arranged on the inner ring, so that when the whole elastic structure body is extruded, heat is completely discharged through the heat dissipation holes and cannot be blocked. In addition, the inner ring 2, the outer ring 1 and the elastic structure body of the present embodiment are all made of polyurethane, wherein the shore hardness of the outer ring is 90A, and the shore hardness of the inner layer and the outer layer is 80A. Because of the excellent performance of the polyurethane material, the outer ring and the tread can be integrated to form an integrated tread, namely, the outer ring is the tread.
The tread line on the axial section is in an outwards convex arc shape, and the inflation-free tire is suitable for a tire of a bicycle. Embodiment 2 as shown in fig. 3 and 4, the inflation-free tire with an elastic structure in this embodiment includes an inner ring 2, an outer ring 1, and an elastic structure, wherein the elastic structure is located between the inner ring and the outer ring and is respectively connected with the inner ring and the outer ring, and the cross-sectional width of the inner ring is smaller than the cross-sectional width of the outer ring.
The elastic structure body is formed by arranging two annular spherical structure bodies 3 according to the axial direction corresponding to the inner ring, the annular spherical structure bodies are formed by 25 special-shaped tubular pieces distributed around the inner ring array, and meanwhile, radial lines corresponding to points where the inner central line of the special-shaped tubular pieces and the inner ring intersect are overlapped with the inner central line of the special-shaped tubular pieces. The special-shaped tubular member is formed by sequentially connecting three hollow spheres 31, the hollow spheres are elliptical, the volume of the hollow spheres of the special-shaped tubular member is gradually decreased from an outer ring to an inner ring, the hollow spheres at the tail end of each special-shaped tubular member are respectively connected with the inner ring and the outer ring, and adjacent hollow spheres in the special-shaped tubular member are intersected and communicated through a smooth linear hollow tubular column 33.
In the single annular spherical structure, the center points are at the same radial distance from the inner ring and adjacent hollow spheres are joined and interpenetrated by the smooth straight hollow tubular column 33. Hollow spheres with center points on different concentric circles may be connected by smooth linear hollow tubing strings 33 of different lengths. The lengths of the smooth linear hollow pipe columns 33 between the hollow spheres with the center points on the same concentric circle outline are the same, namely, one special-shaped tubular piece consists of a plurality of hollow spheres, the annular spherical structural bodies of the special-shaped tubular piece correspondingly have a plurality of layers, the lengths of the smooth linear hollow pipe columns 33 on the same layer are the same, and the lengths of the smooth linear hollow pipe columns 33 between different layers are different. In the axial direction, corresponding front and back hollow spheres on different annular spherical structures are intersected and communicated through the through surfaces of the adjacent hollow spheres and can form a straight line parallel to the axial line through the center point. The length of the smooth straight hollow pipe string 33 on the same shaped tubular member is smaller than the length of the smooth straight hollow pipe string 33 between adjacent shaped tubular members.
Through the structure, the whole elastic structure body can form a complete through structure, namely, the cross-linking density of each special-shaped tubular piece is enhanced, so that the bearing capacity of the special-shaped tubular piece is improved, and in addition, the hollow sphere is of a hollow structure, so that the hollow sphere has certain elasticity, and the comfort of the hollow sphere can be improved on the basis of improving strangeness. The hollow spheres are of an integrated structure formed by the inner layer, the outer layer and the middle layer, and the inner layer, the middle layer and the outer layer are sequentially connected to form a wall shell with a certain thickness, the thickness is 5mm, and the bearing capacity of each hollow sphere is also improved by improving the wall thickness of each hollow sphere. In addition, the Shore hardness of the inner layer and the Shore hardness of the outer layer can be further set to be larger than that of the middle layer, the bearing requirements can be met under the condition that the thickness is reduced, so that the material saving effect is achieved, in addition, the reduction of the thickness is also beneficial to reducing the load of the wheel hub, the weight of the tire is reduced, and the comfort of the tire is improved.
Because the inflation-free tire can generate heat in the process of long-term contact with the ground or long-term operation, in order to strengthen the heat dissipation of the tire, the heat dissipation holes can be formed in at least one hollow sphere of at least one special-shaped tubular piece, and because the whole annular spherical structural body is completely penetrated to form a finished hollow structure, the heat dissipation holes can be formed in only one hollow sphere. In order to further enhance the heat dissipation performance 311, the heat dissipation hole may be disposed at a position where the hollow sphere is connected to the inner ring, and the inner ring is provided with a through hole 21 aligned with the heat dissipation hole, so that when the whole elastic structure is extruded, heat is completely discharged through the heat dissipation hole without being blocked. In addition, due to the excellent performance of the polyurethane material, the outer ring and the tread can be integrated to form an integrated tread, namely, the outer ring is the tread, so that the wear resistance and the durability of the tread are improved.
In order to further improve the bearing capacity of the whole elastic structural body, the tread, namely the connection mode of the outer ring and the hollow sphere, is set to be intersected, namely the intersection of the surfaces is adopted, a multi-point support can be formed when the tread is stressed, the bearing capacity is improved, in addition, in order to improve the comfort of the inflation-free tire, an inward groove 11 is formed in the middle of the tread line, the radial section corresponding to the lowest point of the groove divides the two annular spherical structural bodies into two symmetrical parts, and the groove 11 is beneficial to forming the elastic support when the tire is stressed, so that the comfort of the tire is improved. In addition, the inner side of the tread corresponding to the connecting position of the tread (outer ring) and the hollow sphere is hollowed out into an arc shape, and at the moment, the stress yield of the tread is changed due to the fact that the hollowed-out arc shape integrally contracts to reduce the volume, so that the tread can be comfortable and is not easy to damage.
In addition, the tread line on the axial section is in an outwards convex arc shape, so that the tire can obtain better comfort and good steering performance, and meanwhile, the inner ring surface line where the same axial section is positioned and the tread line can be set into the same arc shape, so that the comfort and the steering performance are further improved.
The inner ring 2, the outer ring 1 and the elastic structure body of the embodiment are all composed of polyurethane, wherein the shore hardness of the outer ring is 70A, and the shore hardness of the inner layer and the outer layer is 90A.
The elastic structure body is formed by arranging three annular spherical structure bodies 3 according to the axial direction corresponding to the inner ring, the annular spherical structure bodies are formed by distributing 40 special-shaped tubular pieces around the inner ring array, and meanwhile, radial lines corresponding to points where the inner central line of the special-shaped tubular pieces and the inner ring intersect are overlapped with the inner central line of the special-shaped tubular pieces. The special-shaped tubular piece is formed by sequentially connecting six hollow spheres, the hollow spheres are of a regular spherical structure, the hollow spheres at the tail end of each special-shaped tubular piece are respectively connected with an inner ring and an outer ring, and adjacent hollow spheres in the special-shaped tubular piece are intersected and communicated through a wave-shaped linear hollow tubular column.
In a single annular spherical structure, the center points are at the same radial distance from the inner ring and adjacent hollow spheres intersect and penetrate each other through the passing surfaces. Hollow spheres with center points on different concentric circles may be connected by smooth linear hollow tubing strings 33 of different lengths. The smooth straight hollow pipe columns 33 between the hollow spheres on the same concentric circle have the same length, i.e. the smooth straight hollow pipe columns 33 on the same layer have the same length, while the smooth straight hollow pipe columns 33 between different layers have different lengths. In the axial direction, on the same radial distance from the inner ring, the hollow spheres in the latter annular spherical structure body are just positioned between two hollow spheres of the former annular spherical structure body and are intersected and communicated with the two hollow spheres through surfaces, at least one hollow sphere is connected with six adjacent hollow spheres on the axial section parallel to the horizontal plane and communicated with the six adjacent hollow spheres, and the centers of the adjacent three hollow spheres which are not on the same straight line can be connected with each other in pairs to form a triangle. One hollow sphere is connected with six adjacent hollow spheres, so that a more stable cross-linked structure can be formed among the hollow spheres, the bearing capacity of the hollow spheres is improved, and the tire is suitable for being applied to a bearing tire with large bearing capacity.
The whole elastic structure body can form a complete through structure through the structure, namely, the cross-linking density of each special-shaped tubular piece is enhanced, and the outer ring, the inner ring and the firm tissues of a plurality of special-shaped tubular pieces form a strong and difficult-to-break three-dimensional supporting spring net in the tire, so that the bearing capacity of the tire is improved. In addition, the hollow sphere is of a hollow structure, so that the hollow sphere has certain elasticity, and the comfort of the hollow sphere can be improved on the basis of improving strangeness. The hollow spheres are of an integrated structure formed by an inner layer, an outer layer and a middle layer of elastic polyurethane materials, and the inner layer, the middle layer and the outer layer are sequentially connected to form a wall shell with a certain thickness, wherein the thickness is 10mm, and the bearing capacity of each hollow sphere is also improved by improving the wall thickness of each hollow sphere.
Since the inflation-free tire generates heat during long-term contact with the ground or long-term operation, and in order to enhance heat radiation of the tire, the heat radiation holes 311 may be provided in at least one hollow sphere of at least one special-shaped tubular member, and since the entire annular spherical structure is entirely penetrated to form a completed hollow structure, only one heat radiation hole may be provided in one hollow sphere, and since the hollow spheres among the plurality of annular spherical structures are connected and penetrated, only one heat radiation hole may be provided in one hollow sphere. In order to further enhance the heat dissipation performance, the heat dissipation holes can be arranged at the position where the hollow sphere is connected with the inner ring, meanwhile, the through holes 21 aligned with the heat dissipation holes are arranged on the inner ring, and when the whole elastic structure body is extruded, heat is completely discharged through the heat dissipation holes without being blocked. In addition, due to the excellent performance of the polyurethane material, the outer ring and the tread can be integrated to form an integrated tread, namely the outer ring is the tread, so that the wear resistance of the tread is improved. In order to further improve the bearing capacity of the whole elastic structure body, the tread, namely the connection mode of the outer ring and the hollow sphere, is set to be intersected, namely the tread is intersected through the surface, so that a multi-point support can be formed when the tread is stressed, and the bearing capacity is improved. In addition, the inner side of the tread corresponding to the connecting position of the tread and the hollow sphere is hollowed into an arc shape, and at the moment, the stress yield of the tread is changed due to the fact that the hollowed arc shape integrally contracts to reduce the volume, so that the tread is comfortable and is not easy to damage. In order to further improve the comfort, a tread pattern can be manufactured on the tread, namely, a round concave tread pattern 12 is arranged on the outer side of the tread corresponding to the position hollowed into an arc shape, when the tread is ensured to have enough thickness, the pattern can be engraved deeper and larger, when the tire runs through the corresponding tread pattern, the part of the tread is easier to shrink and yield, at the moment, the part of the tread actively reduces the bearing pressure, and meanwhile, the other nearby treads are stressed by larger force, so that the tire can generate better comfort.
In addition, the tread line on the axial section is in an outwards convex arc shape, so that the tire can obtain better comfort and good steering performance, and meanwhile, the inner ring surface line where the same axial section is positioned and the tread line can be set into the same arc shape, so that the comfort and the steering performance are further improved.
The inner ring 2, the outer ring 1 and the elastic structure body of the embodiment are all composed of rubber, wherein the shore hardness of the outer ring is 85A, and the shore hardness of the inner layer and the shore hardness of the outer layer are both 60D.
Embodiment 4 the inflation-free tire with elastic structure in this embodiment comprises an inner ring 2, an outer ring 1 and an elastic structure, wherein the elastic structure is located between the inner ring and the outer ring and is respectively connected with the inner ring and the outer ring, the elastic structure is formed by arranging six annular spherical structures 3 according to the axial direction corresponding to the inner ring, the annular spherical structures are formed by 60 special-shaped tubular pieces distributed around an inner ring array, meanwhile, the radial line corresponding to the point where the inner central line of the special-shaped tubular piece is intersected with the outer ring is intersected with the inner central line of the special-shaped tubular piece to form an acute angle, and the inner central line of each special-shaped tubular piece is not overlapped with the corresponding radial line. Each special-shaped tubular piece is formed by sequentially connecting six hollow spheres 31 through a smooth linear hollow tubular column 33, and the hollow spheres adjacent to each other in the axial direction in different annular spherical structures are communicated through a wavy linear hollow tubular column 34. The length of the hollow pipe column in the same special-shaped tubular piece is smaller than that of the hollow pipe column between the adjacent special-shaped tubular pieces in the connecting axial direction, the method is beneficial to improving the bearing in the vertical direction, the hollow pipe column in the same special-shaped tubular piece has stronger elasticity in the axial direction, and the diameter of the hollow pipe column in the special-shaped tubular piece is larger than that of the hollow pipe column between the adjacent special-shaped tubular pieces in the connecting axial direction, so that the effect can be further enhanced.
The center of the hollow sphere in the six annular spheres just forms six transverse straight lines and six longitudinal straight lines when seen from the axial surface of the hollow sphere in the elastic structure, and the six transverse straight lines are parallel to the axial line, so that at least one hollow sphere is connected with four adjacent hollow spheres on the axial section. In addition, hollow spheres corresponding to the positions in adjacent special-shaped tubular members in the same annular spherical structure body are connected and communicated with each other through the wavy linear hollow tubular column 34, so that the whole annular spherical structure body is a complete hollow structure. In this embodiment, since the six annular spherical structures 3 are sequentially connected, the adjacent special-shaped tubular members in the same annular spherical structure 3 are connected in pairs to form a hollow part shape between the special-shaped tubular members, the hollow part shape can be changed according to the spherical shape in the special-shaped tubular members, the shape, the length and the size of the adjacent spherical connecting tubular columns, and meanwhile, in this embodiment, the hollow part shapes at the same positions on different annular spherical structures in the axial direction are overlapped, so that through holes penetrating through two sides of the tire are formed in the axial direction.
Because the tire can generate heat in the running process, for better heat dissipation, the heat dissipation holes 311 are arranged on at least one hollow sphere in each annular spherical structure body, and as each annular spherical structure body has a complete hollow structure, the heat dissipation effect can be achieved only by ensuring that each annular spherical structure body has at least one heat dissipation hole 311. If the center points are positioned on the same axial section and the hollow spheres forming the transverse straight lines are communicated, the whole elastic structure body also forms a complete hollow structure, and at the moment, the heat dissipation requirement of the whole elastic structure body can be met by only ensuring that at least one hollow sphere at the outermost side is provided with a through hole.
The hollow sphere of the embodiment is an integrated structure formed by an inner layer, an outer layer and a middle layer, and the inner layer, the middle layer and the outer layer are sequentially connected to form a wall shell with a certain thickness, and the thickness is 5mm. Because both ends of all special-shaped tubular pieces are respectively connected with the outer ring and the inner ring, the inner central line of each special-shaped tubular piece is also intersected with the outer ring and the inner ring, and the inner central line of each special-shaped tubular piece is positioned in the radial plane. When the inflation-free tire runs under load, the outer ring grounding area rapidly transmits gravity to a plurality of special-shaped tubular pieces at the stressed position of the outer ring, the top of each special-shaped tubular piece is in a circular shape and is connected with the outer ring in an intersecting manner, the wall shell connecting the outer ring and the outer ring are inclined at a certain angle, the wall shell close to the outer ring is contracted and slightly bent under the action of gravity, the hollow sphere connecting position of the special-shaped tubular piece is expanded outwards after being extruded by the gravity, the wavy linear hollow tubular column 34 connected with the hollow sphere is contracted and deformed and shortened under the action of extrusion, but the wavy linear hollow tubular column 34 is not shortened after being contracted to a certain degree relative to the special-shaped tubular piece, so that the expansion of the hollow sphere transmitting force to the wavy linear hollow tubular column 34 is limited, and similar stressed conditions are generated simultaneously. When the stressed hollow sphere is not expanded any more, gravity is continuously transmitted to the wall shell below the connecting position of the wave-shaped linear hollow tubular column 34, and when the gravity is transmitted to the lowest position, the wall shell is contracted and tightened as much as possible, and the space in the tube is reduced when the hollow sphere is extruded by the gravity. It is known that hollow spheres are not easily broken when they are subjected to, or receive, gravity or external forces from a vertical or near vertical direction, and that the "wall shells" in the profiled tubular element are bodies of elastic material of a certain thickness, with a high resistance to tearing and flexing, which mutually exert forces supporting the whole tread when subjected to the action of gravity. The outer part of the wall shell of the whole special-shaped tubular piece is tightly connected up and down to form a wavy curve, and the inner part of the wall shell is of a hollow structure which is mutually communicated, so that the wall shell can be bent and deformed to a certain extent when supporting a heavy object, and the tire is buffered and comfortable. The connection and penetration of the adjacent special-shaped tubular pieces and the stressed special-shaped tubular pieces are the root of ensuring that the special-shaped tubular pieces are not easily damaged by gravity, when the tire bears a heavy object, the stressed area of the outer ring can transmit the gravity to the corresponding stressed special-shaped tubular pieces, the wavy linear hollow tubular column 34 and the hollow sphere positioned on the same layer can mutually form a layer of more compact and firm 'surface layer', and as the special-shaped tubular pieces are formed by six hollow spheres, six compact and firm 'surface layers' can be formed, and the 'surface layers' are in parallel or nearly parallel relation with the tread of the stressed area.
In this embodiment, the greater the degree of the wavy curve of the "wall shell" is, the better the comfort of the tire, and the less the relative load carrying capacity along the direction of the centerline of the inside of the tube of the profiled tubular element; the smaller the degree of the wave curve of the "wall shell", the greater the relative load carrying capacity of the tire and the less comfortable the tire will be.
For the number of the special-shaped tubular pieces, the more the special-shaped tubular pieces are arranged in the tire, the larger the thickness of the wall shell is, the more the bearing capacity of the tire is, and the weaker the bearing capacity of the tire is. In comparison, the structure that one special-shaped tubular piece is connected with six adjacent special-shaped tubular pieces in the corresponding hollow sphere is much larger than the bearing capacity of the structure that one opposite-shaped tubular piece is connected with four adjacent special-shaped tubular pieces in the corresponding hollow sphere, and the structure that one special-shaped tubular piece is connected with six adjacent special-shaped tubular pieces in the corresponding hollow sphere is more suitable for bearing tires with large bearing capacity.
In order to further make the inflation-free tire of this embodiment more comfortable during heavy load running, it is necessary to design an elastic structure between the outer ring and the inner ring to have good elastic support and to make the outer ring locally yieldable under stress. In this embodiment, directly define the outer loop as the tread, the tread is crossing with the hollow sphere that annular spherical structure body meets in the face, sets up the open mouth that has ring "wall shell" in special-shaped tubular part and outer loop junction that is provided with one end, and ring "wall shell" links to each other with the outer loop, and the fretwork is partly gone up to the annular that corresponds in ring "wall shell" mouth under the circumstances that the assurance outer loop has relative thickness, and the mode of fretwork is: the circular ring wall shell is used as a starting point to circularly and gradually control the hollow to form a small part of a cut circle, the hollow is shaped like an inverted pot, and the pot bottom is arranged in the extension part of the inner central line of the pipe of the special-shaped tubular piece. And a part of material is subtracted or hollowed out from the inner side of other outer rings without the opening of the circular ring wall shell corresponding to the outer ring. When the tread pattern 12 is produced outside the outer ring, a "pattern" which approximates the shape of a "wall shell" circle is engraved in the opposite direction of the connecting outer ring of the plurality of "wall shell" openings of the profiled tubular member, and the "pattern" can be engraved deeper and larger while ensuring the proper thickness of the tread. When the tire runs through the tire tread part corresponding to the wall shell opening, the tire tread part corresponding to the wall shell opening is easier to shrink and yield, at the moment, the tire tread part actively reduces bearing pressure, and at the same time, other nearby tire treads are subjected to larger force, so that the tire can generate better comfort. The tread body is hollow arc-shaped, and the stress yield of the tread is changed due to the fact that the hollow arc-shaped integrally contracts to reduce the volume, so that the tread is comfortable and is not easy to damage.
The inner ring 2, the outer ring 1 and the elastic structure body of the present embodiment are all made of polyurethane, wherein the shore hardness of the outer ring is 55A, the shore hardness of the inner layer and the shore hardness of the outer layer are 65A, one or more layers of tread can be covered on the surface of the original tread (outer ring) in order to further improve the travelling comfort of the tire, the embodiment selects a rubber tread with the shore hardness smaller than that of the outer ring, and only one layer is provided, and the structure is adopted to be favorable for further improving the travelling comfort of the tire, but one layer is only used as a concrete implementation example, multiple layers can be provided according to the requirement, and the multiple layers are provided.
The elastic structure body specifically comprises a plurality of annular spherical structures and each special-shaped tubular piece consists of a plurality of hollow spheres, and can be determined according to different application conditions, for example, the elastic structure body can consist of a single annular spherical structure body when the cross section width of an outer ring is smaller and the bearing capacity is smaller, and can be formed by combining two or more annular spherical structure bodies when the bearing capacity is large; the more the number of hollow spheres on a single special-shaped tubular member is, and the more the hollow spheres adjacent to the special-shaped tubular member are tightly connected, the larger the relative bearing capacity is, so that the number of annular spherical structures and the number of hollow spheres on each special-shaped tubular member can be limited according to specific requirements, the number of annular spherical structures multiplied by the number of hollow spheres of the single special-shaped tubular member can be 2X2, 3X3, 4X4, 2X3 and 4X2 …, and the number of special-shaped tubular members in the single annular spherical structure can be arbitrarily combined according to the bearing capacity when the special-shaped tubular members are selected.
In the present invention, the hollow sphere 31 is not strictly limited to a regular spherical structure or a regular spherical-like structure, and may be a regular spherical-like structure alone, such as an elliptical structure or a structure composed of two symmetrical arcuate surfaces other than an ellipse, while the hollow sphere contained in the shaped tubular member may be a mixture of a regular spherical-like structure and a regular spherical-like structure as long as the requirements of other structural features described in the present embodiment are satisfied. In addition, in the invention, the hollow spheres on the same special-shaped tubular piece and the hollow spheres on different special-shaped tubular pieces can be communicated through the way of surface intersection or hollow tubular column connection, and the way of communication can be matched at will.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (27)
1. The inflation-free tire with the elastic structure body comprises an inner ring, an outer ring and the elastic structure body, wherein the elastic structure body is positioned between the inner ring and the outer ring and is respectively connected with the inner ring and the outer ring.
2. The inflation-free tire with the elastic structure according to claim 1, wherein adjacent hollow spheres in the shaped tubular member are connected by a face intersection or hollow tubular column, and the intersection position is penetrated.
3. The inflation-free tire with the elastic structure according to claim 2, wherein the hollow column is a straight hollow column or an arc-shaped hollow column.
4. A inflation-free tire having an elastic structure according to claim 1 or 2, wherein a radial line corresponding to a point at which the in-tube centerline of the shaped tubular member intersects with the inner ring overlaps or intersects with the in-tube centerline of the shaped tubular member at an acute angle.
5. A inflation-free tire having an elastic structure according to claim 1 or 2, wherein the outer ring width is larger than the inner ring width, and the hollow sphere volume of the shaped tubular member decreases from the outer ring to the inner ring in order.
6. The inflation-free tire with the elastic structure according to claim 1 or 2, wherein the elastic structure is formed by arranging at least two annular spherical structures in sequence according to the axial direction corresponding to the inner ring, and hollow spheres with the same radial distance between the central point and the inner ring on different annular spherical structures are intersected through the surface or connected through a hollow tubular column, and the intersection position is communicated.
7. The inflation-free tire having an elastic structure according to claim 6, wherein the length of the hollow string in the same one of the shaped tubular members is smaller than the length of the hollow string between adjacent shaped tubular members in the connecting axial direction, and the diameter of the hollow string in the same one of the shaped tubular members is larger than the diameter of the hollow string between adjacent shaped tubular members in the connecting axial direction.
8. The inflation-free tire with the elastic structure according to claim 6, wherein the hollow spheres at corresponding positions in the profiled tubular members adjacent in the axial direction are penetrated by intersecting surfaces, and the adjacent hollow spheres in the profiled tubular members are penetrated by connecting hollow tubular columns.
9. The inflation-free tire having an elastic structure according to claim 1, wherein the elastic structure is constituted by at least three annular spherical structures arranged in order in an axial direction corresponding to the inner ring, the shaped tubular member is constituted by at least three hollow spheres connected in order, adjacent hollow spheres in the axial direction are connected to each other and pass through and can form a straight line parallel to an axial line through a center point, and at least one hollow sphere is connected to four hollow spheres adjacent to the periphery in an axial section.
10. The inflation-free tire with the elastic structure according to claim 1, wherein the elastic structure is formed by sequentially arranging at least three annular spherical structures in the axial direction corresponding to the inner ring, the hollow sphere in the latter annular spherical structure is just positioned between and connected with two hollow spheres of the former annular spherical structure, the special-shaped tubular member is formed by sequentially connecting at least three hollow spheres, and at least one hollow sphere is connected with six hollow spheres adjacent to the periphery on the axial surface.
11. A inflation-free tire having an elastic structure according to claim 9 or 10, wherein the hollow sphere passing surfaces adjacent in the axial direction intersect, and a hollow column penetrates.
12. A inflation free tire having an elastomeric structure according to claim 1, wherein at least one hollow sphere on each of said profiled tubular members is provided with a through hole.
13. The inflation-free tire having an elastic structure according to claim 6, wherein at least one hollow sphere in one annular spherical structure is provided with a through hole.
14. The inflation-free tire with the elastic structure according to claim 13, wherein the through hole is located at a connection position of the shaped tubular member and the inner ring, and a heat dissipation hole is provided at a position corresponding to the through hole on the inner ring.
15. The inflation-free tire having an elastic structure according to claim 1, wherein each of the irregularly-shaped tubular members in the annular spherical structure is formed with a through hole at a position where it meets the inner ring, and the inner ring is provided with a corresponding heat radiation hole at a position corresponding to each through hole.
16. A non-pneumatic tire with elastomeric structures as in claim 1 or 2, wherein said outer ring is a polyurethane tread, said tread intersecting with the hollow spheres of annular spherical structures.
17. The inflation-free tire having the elastic structure according to claim 16, wherein the tread line where the axial cross section is located is parallel to the axial straight line or in an outwardly convex arc shape.
18. The inflation-free tire having an elastic structure according to claim 16, wherein the elastic structure is composed of an even number of annular spherical structures, an inward groove is provided in the middle of the tread line, and a radial cross section corresponding to the lowest point of the groove divides all the spherical structures into two equal numbers.
19. The inflation-free tire having an elastic structure according to claim 1 or 2, wherein the hollow sphere is an integral structure formed of an inner layer, an outer layer and an intermediate layer, and the hollow sphere formed of the inner layer, the outer layer and the intermediate layer has a wall thickness of 1 to 80mm.
20. The inflation-free tire with the elastic structure according to claim 1, wherein the shore hardness of the outer ring is 55A to 90A, the hollow sphere is an integral structure formed by an inner layer, an outer layer and an intermediate layer, and the shore hardness of the inner layer and the outer layer is 65A to 60D.
21. A inflation-free tire having an elastic structure according to claim 3, wherein the linear hollow column is selected from one of a smooth linear hollow column or a wavy linear hollow column.
22. The inflation-free tire having an elastic structure according to claim 16, wherein the tread is hollowed out on the inner side of the tread corresponding to the connection position of the tread and the hollow sphere.
23. The inflation-free tire with the elastic structure according to claim 21, wherein the outer ring is a polyurethane tread, the inner side of the tread corresponding to the connection position of the tread and the hollow sphere is hollowed out, and the outer side of the tread corresponding to the hollowed-out position is provided with a concave tread pattern.
24. The inflation-free tire with elastic structure according to claim 1 or 20, wherein the hollow sphere is an integral structure formed by an inner layer, an outer layer and an intermediate layer, both of which have a shore hardness greater than that of the outer ring.
25. The inflation-free tire having an elastic structure according to claim 1, wherein the inner ring, the outer ring, and the elastic structure are each composed of the same high molecular polymer selected from one of polyurethane and rubber.
26. The inflation-free tire having an elastic structure according to claim 1, wherein the outer ring is made of a polyurethane material, and the outer ring surface is provided with a rubber surface.
27. The inflation-free tire with elastic structure according to claim 1, wherein the outer ring is composed of polyurethane material, the outer ring is provided with at least one layer of tread, and the shore hardness of the tread is smaller than the shore hardness of the outer ring.
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| CN201710763201.0A CN107571689B (en) | 2017-08-30 | 2017-08-30 | Inflation-free tire with elastic structure body |
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| CN201710763201.0A CN107571689B (en) | 2017-08-30 | 2017-08-30 | Inflation-free tire with elastic structure body |
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| CN107571689B true CN107571689B (en) | 2023-07-04 |
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| CN201710763201.0A Active CN107571689B (en) | 2017-08-30 | 2017-08-30 | Inflation-free tire with elastic structure body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109568011B (en) * | 2018-10-19 | 2021-02-19 | 杭州科技职业技术学院 | Edge sealing device for sanitary towel |
| CN110696546B (en) * | 2019-09-18 | 2023-07-11 | 中国人民解放军陆军工程大学 | Metal spring net wheel with foam ball material filled inside |
| CN110758021A (en) * | 2019-11-22 | 2020-02-07 | 山东理工大学 | Non-pneumatic tire with oval bearing body structure |
| JP7418197B2 (en) * | 2019-12-13 | 2024-01-19 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | non-pneumatic tires |
| CN114161883A (en) * | 2020-09-11 | 2022-03-11 | 深圳市道瑞轮胎有限公司 | High-elasticity bicycle tire |
| CN114161882A (en) * | 2020-09-11 | 2022-03-11 | 深圳市道瑞轮胎有限公司 | Bicycle tyre |
| CN114161881A (en) * | 2020-09-11 | 2022-03-11 | 深圳市道瑞轮胎有限公司 | Electric friction tyre with multiple elastic supports |
| CN112706563B (en) * | 2021-01-18 | 2022-05-17 | 青岛科技大学 | Non-pneumatic elastomer tire with bionic tooth structure |
| CN113400867B (en) * | 2021-07-06 | 2022-03-04 | 季华实验室 | Bionic support buffer structure and non-pneumatic tire |
| CN114312151A (en) * | 2022-01-20 | 2022-04-12 | 深圳市道瑞轮胎有限公司 | Non-inflatable tyre |
| CN115042562A (en) * | 2022-04-15 | 2022-09-13 | 深圳市道瑞轮胎有限公司 | Non-inflatable tyre |
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| US857281A (en) * | 1905-10-17 | 1907-06-18 | Walter Hogben | Ball-bearing tube for tires. |
| FR370039A (en) * | 1906-09-26 | 1907-01-26 | Jacques Ancel | Elastic tire for wheels with bellows or screw chambers and air renewal |
| GB191200075A (en) * | 1911-01-11 | 1912-08-29 | Frank Mitchel Henry | Improvements in Combined Sectional Tires and Wheel Rims. |
| US7231948B2 (en) * | 2004-03-18 | 2007-06-19 | Carlisle Intangible Company | Non-pneumatic tire |
| KR20110086455A (en) * | 2010-01-22 | 2011-07-28 | 주식회사 이노세이페스 | Puncture prevention in compliance with the tire manufacturing method which is possible and a different meaning method the tire which is manufactured |
| CN102350923A (en) * | 2011-07-13 | 2012-02-15 | 深圳市道尔轮胎科技有限公司 | Open-structure tire free of tire burst |
| CN104890448B (en) * | 2015-05-14 | 2017-01-18 | 深圳市道尔化工涂料有限公司 | Non-inflatable tyre having tread of comfortable elastic structure |
| CN204915127U (en) * | 2015-07-03 | 2015-12-30 | 深圳市道尔轮胎科技有限公司 | Embedded open architecture tire of cast that can not blow out |
| CN106739819B (en) * | 2016-12-21 | 2018-03-30 | 青岛双星轮胎工业有限公司 | Non-inflatable tyre |
| CN107053954B (en) * | 2017-01-19 | 2019-10-01 | 青岛双星轮胎工业有限公司 | Non-inflatable tyre |
| CN207657525U (en) * | 2017-08-30 | 2018-07-27 | 深圳市道尔化工涂料有限公司 | A kind of non-inflatable tyre with elastic structure |
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Effective date of registration: 20210722 Address after: 518000 Room 301, building 23, honghanyuan, Changfa Middle Road, Bantian community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen daorui Tire Co.,Ltd. Address before: Room 301, building A23, honghanyuan, Changfa Road, Bantian street, Longgang District, Shenzhen, Guangdong 518129 Applicant before: SHENZHEN DAOER CHEMICAL COATING Co.,Ltd. |
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