Automobile inner tube flap

Abstract

The utility model relates to the technical field of automobile inner tube flap belts, in particular to an automobile inner tube flap belt which comprises a flap belt body, the flap belt body is composed of a middle portion and two edge portions, the two edge portions are integrally formed and connected on the two sides of the middle portion, an R arc reinforcing portion is arranged at the connecting position of any one edge portion and the middle portion, the section of the R arc reinforcing portion is round, and the section of the R arc reinforcing portion is round. According to the automobile inner tube flap, the R-arc reinforcing part is preset at the R-arc part, so that the extrusion deformation of the R-arc part of the automobile inner tube flap is relieved; and in addition, the extrusion deformation resistance of the R-arc reinforcing part is further improved by utilizing the compression resistance of a round bar reinforcing ring made of a metal material and an annular semicircular rib in the R-arc reinforcing part, the conditions of extrusion cracking and the like of the R-arc part of the automobile inner tube flap are reduced, and the service life of the automobile inner tube flap is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inner tube flap for automobiles, in particular to an inner tube flap for automobiles. Background Art

[0002] The inner tube flap for automobiles, also known as flap, liner or bead wire, refers to an annular rubber band used to protect the mating surface of the inner tube from being worn by the rim. It is installed between the inner tube and the rim. Generally, the middle part of the flap is thicker, and the two edges gradually become thinner from the inside to the outside.

[0003] At present, the protection effect of the existing inner tube flap for automobiles is not ideal enough. Since most heavy-duty trucks are overloaded, under the long-term high-temperature and flexing conditions, during the use process, the R-arc part of the flap is extremely prone to extrusion deformation, cracking and other situations, and it cannot protect the inner tube of the automobile for a long time.

[0004] Therefore, aiming at the deficiencies of the existing technology, it is very necessary to provide an inner tube flap for automobiles to solve the deficiencies of the existing technology. Content of the Utility Model

[0005] The purpose of the utility model is to avoid the deficiencies of the existing technology and provide an inner tube flap for automobiles. By presetting an R-arc strengthening part at the R-arc part of the inner tube flap for automobiles, the extrusion deformation of the R-arc part of the inner tube flap for automobiles is slowed down, and inside the R-arc strengthening part, the compressive capacity of the round bar reinforcing ring made of metal material and the annular semi-circular rib is used to further improve the anti-extrusion deformation ability of the R-arc strengthening part, reduce the extrusion cracking and other situations of the R-arc part of the inner tube flap for automobiles, and improve the service life of the inner tube flap for automobiles.

[0006] The above purpose of the utility model is achieved by the following technical means.

[0007] Provide an inner tube flap for automobiles, including a flap body. The flap body consists of a middle part and two edge parts. The two edge parts are integrally formed and connected on both sides of the middle part. An R-arc strengthening part is provided at the connection of any one of the edge parts and the middle part. The cross-section of the R-arc strengthening part is circular. The R-arc strengthening part, the edge part corresponding to the R-arc strengthening part and the inside of the middle part are wrapped with a metal strengthening structure.

[0008] The metal strengthening structure is integrally formed by a first positioning ring piece, a round bar reinforcing ring and a second positioning ring piece in sequence. The first positioning ring piece is wrapped by the middle part, the round bar reinforcing ring is wrapped by the R-arc strengthening part, and the second positioning ring piece is wrapped by the edge part corresponding to the R-arc strengthening part.

[0009] The R-arc strengthening part produces protrusions on both the inner side and the outer side of the flap body, and the horizontal included angle A between the connecting line M of the cross-section center points of the two protrusions and the horizontal center line N of the cross-section of the middle part is 45°.

[0010] On the outer sides of the circular bar reinforcing ring near the two convex directions, a number of annular semi-circular rib strips are integrally formed, and the number of annular semi-circular rib strips are distributed in a circumferential array with the center point O of the cross-section of the circular bar reinforcing ring as the center.

[0011] A number of limiting bumps are provided on the first positioning ring piece and the second positioning ring piece, and a positioning hole is also opened on the first positioning ring piece.

[0012] In the present utility model, by pre-setting an R-arc reinforcing part at the R-arc part, the extrusion deformation of the R-arc part of the inner tube cushion of the automobile is slowed down, and inside the R-arc reinforcing part, the compressive resistance of the circular bar reinforcing ring made of a metal material and the annular semi-circular rib strips is used to further improve the anti-extrusion deformation ability of the R-arc reinforcing part, reduce the extrusion cracking and other situations of the R-arc part of the inner tube cushion of the automobile, and improve the service life of the inner tube cushion of the automobile. Description of the Drawings

[0013] The present utility model is further described with reference to the attached drawings, but the content in the drawings does not constitute any limitation to the present utility model.

[0014] Figure 1 is a schematic cross-sectional view of an inner tube cushion of an automobile according to the present utility model.

[0015] Figure 2 is a schematic top view structure diagram of a metal reinforcing structure of an inner tube cushion of an automobile according to the present utility model.

[0016] From Figures 1 to 2 Among them, it includes:

[0017] 1. Pad belt body;

[0018] 2. Intermediate part;

[0019] 3. Edge part;

[0020] 4. R-arc reinforcing part;

[0021] 5. Metal reinforcing structure;

[0022] 6. First positioning ring piece;

[0023] 7. Circular bar reinforcing ring;

[0024] 8. Second positioning ring piece;

[0025] 9. Protrusion;

[0026] 10. Annular semi-circular rib strip;

[0027] 11. Limiting bump;

[0028] 12. Positioning hole. Detailed Embodiment

[0029] The present utility model will be further described in conjunction with the following embodiments.

[0030] Embodiment 1.

[0031] As Figures 1-2 shown, a tire flap for an automobile includes a flap body 1. The flap body 1 consists of an intermediate part 2 and two edge parts 3. The two edge parts 3 are integrally formed and connected on both sides of the intermediate part 2. An R-arc strengthening part 4 is provided at the connection of any one of the edge parts 3 and the intermediate part 2. The cross-section of the R-arc strengthening part 4 is circular. A metal strengthening structure 5 is wrapped inside the R-arc strengthening part 4, the edge part 3 corresponding to the R-arc strengthening part 4, and the intermediate part 2.

[0032] This application is for the protection of the inner tire of an automobile. First, the flap body 1 is composed of an inwardly concave intermediate part 2 and edge parts 3 that are upturned on both sides. An R-arc strengthening part 4 is provided at the connection of any one of the edge parts 3 and the intermediate part 2. The R-arc strengthening part 4 can be placed on the side close to the R-arc. The R-arc strengthening part 4 can be adaptively strengthened for the high damage rate of the R-arc part. The strength of the R-arc strengthening part 4 is improved through the metal strengthening structure 5 inside, reducing the probability of extrusion deformation and cracking damage of the tire flap for an automobile.

[0033] The metal strengthening structure 5 is integrally formed in sequence by a first positioning ring piece 6, a round bar strengthening ring 7, and a second positioning ring piece 8. The first positioning ring piece 6 is wrapped by the intermediate part 2, the round bar strengthening ring 7 is wrapped by the R-arc strengthening part 4, and the second positioning ring piece 8 is wrapped by the edge part 3 corresponding to the R-arc strengthening part 4.

[0034] The metal strengthening structure 5 is wrapped inside the R-arc strengthening part 4 through the round bar strengthening ring 7. The round bar strengthening ring 7 has the same shape as the R-arc strengthening part 4. At the same time, the installation of the first positioning ring piece 6 and the second positioning ring piece 8 can prevent the displacement and self-rotation of the round bar strengthening ring 7.

[0035] The R-arc strengthening part 4 generates protrusions 9 on both the inner side and the outer side of the flap body 1, and the horizontal angle A between the connecting line M of the center points of the cross-sections of the two protrusions 9 and the horizontal midline N of the cross-section of the intermediate part 2 is 45°.

[0036] The protrusions 9 of the R-arc strengthening part 4 can resist the extrusion from the intermediate part 2 and the edge part 3 to the R-arc strengthening part 4 when the flap body 1 is squeezed.

[0037] On the outer side of the round bar strengthening ring 7 close to the two protrusions 9 directions, a number of annular semi-circular rib strips 10 are integrally formed. The number of annular semi-circular rib strips 10 is distributed in a circumferential array with the center point O of the cross-section of the round bar strengthening ring 7 as the center.

[0038] The provision of the annular semi-circular rib 10 can further enhance the strength of the R-arc reinforcement part 4, prevent deformation when the tape body 1 is squeezed from the middle part 2 and the edge part 3 towards the R-arc reinforcement part 4, reduce the cracking rate, and at the same time, the multiple annular semi-circular ribs 10 can increase the friction between the metal reinforcement structure 5 and the tape body 1.

[0039] A number of limiting bumps 11 are provided on the first positioning ring piece 6 and the second positioning ring piece 8, and a positioning hole 12 is also formed on the first positioning ring piece 6.

[0040] The limiting bumps 11 can further maintain the relative positions between the first positioning ring piece 6 and the second positioning ring piece 8 and the tape body 1, prevent the displacement of the metal reinforcement structure 5, and ensure that the round bar reinforcement ring 7 and the annular semi-circular ribs 10 are always located at the R-arc part of the tape body 1.

[0041] During the production process, the metal reinforcement structure 5 can be fixed on the positioning post of the tire tape mold through the positioning hole 12, and then rubber is loaded, the mold is closed, and vulcanization is carried out according to the vulcanization process, so that the metal reinforcement structure 5 is buried in the vulcanized tape body 1.

[0042] The utility model pre-sets an R-arc reinforcement part 4 at the R-arc part to slow down the extrusion deformation of the R-arc part of the inner tube tape of the automobile, and further improves the anti-extrusion deformation ability of the R-arc reinforcement part 4 by using the compressive resistance of the round bar reinforcement ring 7 and the annular semi-circular ribs 10 made of metal material inside the R-arc reinforcement part 4, reduces the extrusion cracking and other conditions of the R-arc part of the inner tube tape of the automobile, and improves the service life of the inner tube tape of the automobile.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the utility model.

Claims

1. An inner tube flap for an automobile, characterized in that: It includes a rim strip body, the rim strip body consists of a middle part and two edge parts, the two edge parts are integrally formed and connected on both sides of the middle part, and an R-arc strengthening part is provided at the connection of any one of the edge parts and the middle part, the cross-section of the R-arc strengthening part is circular, and a metal strengthening structure is wrapped inside the R-arc strengthening part, the edge part corresponding to the R-arc strengthening part and the middle part; The metal strengthening structure is integrally formed by a first positioning ring piece, a round bar strengthening ring and a second positioning ring piece in sequence, the first positioning ring piece is wrapped by the middle part, the round bar strengthening ring is wrapped by the R-arc strengthening part, and the second positioning ring piece is wrapped by the edge part corresponding to the R-arc strengthening part.

2. The inner tube cushion tape for an automobile according to claim 1, wherein: The R-arc strengthening part generates protrusions on both the inner side and the outer side of the rim strip body, and the horizontal included angle A between the connecting line M of the cross-section center points of the two protrusions and the horizontal center line N of the cross-section of the middle part is 45°.

3. A kind of inner tube cushion belt for an automobile according to claim 2, characterized in that: A plurality of annular semi-circular rib strips are integrally formed on the outside of the round bar strengthening ring near the directions of the two protrusions, and the plurality of annular semi-circular rib strips are distributed in a circumferential array with the cross-section center point O of the round bar strengthening ring as the center.

4. A kind of inner tube cushion belt for an automobile according to claim 3, characterized in that: A plurality of limiting protrusions are provided on the first positioning ring piece and the second positioning ring piece, and a positioning hole is also opened on the first positioning ring piece.

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