Thin metal gear ring for out-of-control prevention hub for automobile tire burst

Abstract

The utility model provides a thin metal gear ring for an out-of-control prevention hub for tire burst of an automobile. The thin metal gear ring is formed by machining a thin metal sheet, bending the thin metal sheet into an arc shape and then welding the thin metal sheet. The thin metal gear ring comprises a first welding part and a second welding part which are used for being connected with a vehicle hub in a welded mode. A plurality of process notches are formed in the first welding part and the second welding part; and a main body part for keeping the connection between the tire and the thin metal gear ring after tire burst is formed between the first welding part and the second welding part. According to the structure, continuous production can be conducted through a roller press and / or a punching machine, and the production efficiency is extremely high; according to the preset product length, the cutting device is used for cutting off and separating continuous formed products, finally, the continuous formed products are welded to the hub, the structure is reliable, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wheels, and particularly relates to a thin metal tooth ring for an anti-runaway wheel hub of an automobile tire blowout. Background Technique

[0002] Since tubeless tires are safer than tires with inner tubes and are easier to install and repair, tubeless tires are mostly used for the tires of low-load motor vehicles. However, when the vehicle is traveling at high speed, if a tubeless tire suddenly blows out and completely deflates, and the vehicle is not equipped with an intelligent anti-blowout tire system, since the circumference of the wheel becomes smaller after the blowout, the rolling distance becomes shorter at the same rotational speed, and a speed difference will be generated between the coaxial wheels, which will cause the vehicle's center of gravity to change, resulting in vehicle tilt, and the vehicle will have a large degree of yaw. The time left for the driver to handle is extremely short, and it is necessary to handle it properly. Otherwise, the vehicle is extremely likely to drive into the adjacent lane, rush towards the guardrail, etc., causing serious traffic accidents.

[0003] In order to prevent tire blowouts or reduce the occurrence of traffic accidents even after a tire blowout, people have tried every means to improve tires and wheel hubs. In terms of the improvement of wheel hubs, a blowout safety wheel hub is disclosed in the patent document with the authorization announcement number CN217396108U. The solution includes a wheel hub body, the wheel hub body has an outer ring surface and a first side surface and a second side surface oppositely arranged on both sides of the outer ring surface: a first rim and a second rim are oppositely arranged on both sides of the outer ring surface, a tire mounting seat is formed between the first rim and the second rim, an anti-disengagement retaining ring is arranged on the tire mounting seat, the anti-disengagement retaining ring is an annular convex ring arranged along the outer ring surface, the anti-disengagement retaining ring is concentric with the outer ring surface, and a tooth-shaped structure is arranged on the surface of the anti-disengagement retaining ring. The tooth-shaped structure includes a plurality of convex teeth and tooth grooves arranged at intervals. The convex teeth are protrusions extending outward from the surface of the anti-disengagement retaining ring, and the tooth grooves are grooves recessed inward from the surface of the anti-disengagement retaining ring. The outer diameter of the convex teeth is greater than the diameter of the tire bead adapted to the tire mounting seat. When the tire of the blowout safety wheel hub provided by this solution is blown out, the anti-disengagement retaining ring can hold the tire and support the tire bead at the same time, so that the blown-out tire can continue to rotate with the wheel hub, reducing the yaw amplitude of the vehicle.

[0004] However, it is not easy to obtain a blowout safety wheel hub with an anti-disengagement retaining ring. If the existing forging blanks on the market are used to process the blowout safety wheel hub, the traditional forging blanks do not have the machining allowance for processing the anti-disengagement retaining ring, so only forging blanks can be made separately. Since there are many types and models of wheel hubs, and the cost of each set of forging blank molds is very high, it is impossible to obtain the required forging blanks by remaking all forging blank molds; if an integral forming forging die (referred to as die forging) is used, similarly, one die can only produce one specification of wheel hub. In addition, with an integral forming forging die, the tooth-shaped structure part cannot be formed at one time, so the tooth-shaped structure still needs to be processed separately, which will increase the production cost.

[0005] The company has previously designed a solution to form an anti-slip tooth ring by die-casting or casting an arc-shaped tooth ring section and then connecting it to the wheel hub by splicing and welding. This solution can effectively solve the problem that the tire is prone to detachment from the wheel hub after a flat tire; the present utility model provides another solution to solve the problems in the prior art. Summary of the Invention

[0006] The technical problem actually to be solved by the present utility model is how to design and manufacture an anti-slip tooth ring with a tire anti-detachment function.

[0007] To solve the problems existing in the prior art, the present utility model provides a thin metal tooth ring for an automobile flat tire anti-runaway wheel hub. The thin metal tooth ring is formed by mechanically processing and bending a thin metal sheet into an arc shape and then welding. The thin metal tooth ring includes a first welding part and a second welding part for welding connection with the vehicle wheel hub; the first welding part and the second welding part are respectively located on both sides of the thin metal tooth ring, and the radial cross-sectional diameter of the first welding part is larger than that of the second welding part; a plurality of process notches with openings facing the edge are provided on the first welding part and the second welding part; a main body part for keeping the tire connected to the thin metal tooth ring after a flat tire is formed between the first welding part and the second welding part, and a plurality of anti-slip tooth monomers are formed at intervals on the main body part.

[0008] By continuously forming a plurality of anti-slip tooth monomers on the main body part, due to the certain elasticity of the tire bead, the setting of the anti-slip tooth monomers can effectively increase the friction between the tire bead and the main body part, preventing the tire bead from detaching from the anti-slip tooth monomers; in particular, the key improvement of this solution is to use a mechanical processing method to process the thin metal sheet, and then make a thin metal tooth ring for an automobile flat tire anti-runaway wheel hub. The mechanical processing method includes rolling and / or stamping, and the main body part, the first welding part and the second welding part can be processed by mechanical processing; the setting of the process notches is convenient for bending and forming, and this method can be continuously produced by a rolling machine and / or a stamping machine, with extremely high production efficiency; according to the preset product length, the continuous formed product is cut and separated by a cutting device, and finally welded to the wheel hub, with reliable structure and high efficiency. Brief Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0010] Figure 2 It is a schematic structural diagram of an embodiment of the present utility model installed on a vehicle wheel hub;

[0011] Figure 3 It is a front view of an embodiment of the present utility model;

[0012] Figure 4 For Figure 3Cross-sectional view taken along line A-A;

[0013] Figure 5 is Figure 4 Enlarged view at B in;

[0014] Figure 6 is Figure 1 Enlarged view at C in. Specific implementation mode

[0015] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0016] As Figures 1 to 6 shown, a thin metal tooth ring 1 for an anti-runaway wheel hub of an automobile tire blowout is formed by mechanically processing a thin metal sheet and bending it into an arc shape and then welding it.

[0017] In this embodiment, the thin metal sheet preferably uses a 7075 aviation aluminum alloy plate, a 3003 aluminum alloy or a 6061 aluminum alloy plate; the thickness of the plate is 1-2 millimeters.

[0018] The thin metal sheet can also use a manganese steel thin plate about 0.8-1 millimeter or a 45# steel plate made of medium carbon steel.

[0019] The thin metal tooth ring 1 in this embodiment is made by the processes of rolling and stamping, that is, the so-called mechanical processing mentioned above.

[0020] First, one of the above raw materials is cut into the required width according to the design dimensions, and process notches 100 are punched on both sides of the thin metal sheet.

[0021] As Figure 6 shown, in this embodiment, the process notch 100 is composed of an arc portion 102 and a straight portion 101. The process notch 100 is provided to provide a clearance for the material when it is rolled into an arc shape, and the arc portion 102 is provided to prevent stress concentration and facilitate rolling and forming.

[0022] After being punched, the thin metal sheet is formed through multiple rolling processes, and then through the processes of rolling and cutting, the required thin metal tooth ring section can be obtained.

[0023] In this embodiment, the thin metal tooth ring 1 is composed of two semi-circular thin metal tooth ring sections spliced together. When welding the thin metal tooth ring sections to the vehicle wheel hub, the two thin metal tooth ring sections are pressed tightly on the vehicle rim through a special fixture.

[0024] The above are the forming process and installation process of the thin metal tooth ring 1, and the following are the structural features of the thin metal tooth ring 1.

[0025] As Figure 5As shown in the figure, the thin metal toothed ring 1 includes a first welding portion 11 and a second welding portion 12 for welded connection with a vehicle wheel hub; the first welding portion 11 and the second welding portion 12 are respectively located on both sides of the thin metal toothed ring 1, and the radial cross-sectional diameter of the first welding portion 11 is larger than that of the second welding portion 12.

[0026] A main body portion for keeping the tire connected to the wheel hub after a flat tire is formed by rolling between the first welding portion 11 and the second welding portion 12. A plurality of anti-slip tooth monomers 13 are formed at intervals by rolling or stamping on the main body portion. The anti-slip tooth monomer 13 includes an arc-shaped convex portion 130. A first inclined transition portion 131 is provided on one side of the arc-shaped convex portion 130 close to the first welding portion 11, and a second inclined transition portion 132 is provided on one side of the arc-shaped convex portion 130 close to the second welding portion 12. The radial cross-sectional diameter of the first inclined transition portion 131 decreases sequentially from the arc-shaped convex portion 130 to the first welding portion 11; the radial cross-sectional diameter of the second inclined transition portion 132 decreases sequentially from the arc-shaped convex portion 130 to the second welding portion 12, and the maximum outer diameter of the arc-shaped convex portion 130 is larger than the maximum outer diameter of the convex peak of the wheel hub.

[0027] A groove for accommodating the thin metal toothed ring 1 is formed on the wheel hub, and the first welding portion 11 and the second welding portion 12 can be accommodated therein.

[0028] The first welding portion 11 forms a first support wall 110 at an angle with the main body portion by rolling, and the second welding portion 12 forms a second support wall 120 at an angle with the main body portion by rolling. A process notch 100 is provided on the first support wall 110 and the second support wall 120. In this embodiment, both the first support wall 110 and the second support wall 120 are perpendicular to the axis of the thin metal toothed ring 1, and this setting facilitates processing.

[0029] When rolling and forming, by arranging convex blocks at intervals on the rolling die, a plurality of anti-slip tooth monomers 13 can be formed at intervals on the thin metal toothed ring 1.

[0030] With the above settings, the first inclined transition portion 131 can gradually clamp the tire. The first welding portion 11 and the convex peak of the wheel hub are tightly connected by laser welding, and the second welding portion 12 and the wheel hub are tightly connected by laser welding. When the tire has a flat tire, even if the tire bead crosses the convex peak, the tire bead will fall on the thin metal toothed ring 1. The maximum outer diameter of the arc-shaped convex portion 130 provided on the anti-slip tooth monomer 13 is larger than the maximum outer diameter of the convex peak, and it is difficult for the tire bead to cross the arc-shaped convex portion 130. In this way, the tire can still rotate with the wheel hub, reducing the yaw amplitude of the vehicle.

[0031] As another embodiment of the present utility model, the first welding portion 11 and the second welding portion 12 can also form a support wall at an angle with the main body portion by bending the side edge of a thin metal sheet through stamping. The process notch 100 is provided on the support wall. Then, the anti-slip tooth monomer 13 is formed by rolling or stamping; finally, it is rolled into an arc shape.

[0032] In the above solution, the thin metal tooth ring 1 is composed of two or more arc-shaped tooth ring segments spliced together. The arc-shaped tooth ring segments 10 are formed by stamping and rolling, and a complete thin metal tooth ring 1 is formed through splicing. Then, the size of the arc-shaped tooth ring segments can be designed according to the size of the hub to be adapted, greatly reducing the manufacturing cost. In addition, when the arc-shaped tooth ring segments are made of aluminum alloy, the reliability after welding is good; multiple anti-slip tooth monomers 13 are formed at intervals by rolling or stamping. Since the tire bead has a certain elasticity, a gap is formed between adjacent anti-slip tooth monomers 13, so that a part of the tire bead can be inserted into the gap, effectively increasing the friction between the tire bead and the main body portion, and further preventing the tire bead from detaching from the thin metal tooth ring 1.

[0033] This method can be continuously produced by a stamping machine and a rolling machine, with extremely high production efficiency; according to the product sizes of different specifications, the continuous formed products are cut and separated by a cutting device, and finally welded to the hub, with reliable structure and high efficiency.

Claims

1. A thin metal gear ring for a car tire blowout prevention wheel hub, characterized in that: The thin metal gear ring is made of a thin metal sheet that is machined, bent into an arc shape, and then welded; the thin metal gear ring includes a first welding portion and a second welding portion for welding and connecting with a vehicle wheel hub; The first welding portion and the second welding portion are respectively located on both sides of the thin metal gear ring, and the radial cross-sectional diameter of the first welding portion is larger than the radial cross-sectional diameter of the second welding portion; A plurality of process notches opening toward the edge are provided on the first welding portion and the second welding portion; A main body portion is formed between the first welding portion and the second welding portion to keep the tire connected to the thin metal gear ring after a tire bursts, and a plurality of anti-slip tooth units are formed at intervals on the main body portion.

2. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1 is characterized by: The thin metal gear ring is formed by splicing two semicircular thin metal gear ring segments. When the thin metal gear ring segments are welded to the vehicle wheel hub, the two thin metal gear ring segments are pressed tightly onto the vehicle wheel rim by a special clamp.

3. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1 is characterized in that: The first welding part and the second welding part are both formed into a support wall with a certain angle with the main body by rolling, and the process notch is arranged on the support wall.

4. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 3 is characterized in that: The supporting wall is perpendicular to the axis of the thin metal gear ring.

5. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The first welding part and the second welding part are formed by bending the side of the thin metal sheet by stamping to form a supporting wall that is at a certain angle to the main body, and the process notch is arranged on the supporting wall.

6. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The anti-slip tooth monomer is formed by rolling or stamping.

7. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The anti-slip tooth monomer includes an arc-shaped protrusion, a first oblique transition portion is provided on the side of the arc-shaped protrusion close to the first welding portion, and a second oblique transition portion is provided on the side of the arc-shaped protrusion close to the second welding portion. The radial cross-sectional diameter of the first oblique transition portion decreases successively from the arc-shaped protrusion to the first welding portion; the radial cross-sectional diameter of the second oblique transition portion decreases successively from the arc-shaped protrusion to the second welding portion.

8. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The thin metal sheet is made of aluminum alloy, and the thickness of the thin metal sheet made of aluminum alloy is 0.5-3 mm.

9. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The thin metal sheet is made of manganese steel sheet or medium carbon steel, and the thickness of the thin metal sheet made of manganese steel sheet or medium carbon steel is 0.5-2 mm.

10. The thin metal gear ring for the anti-runaway wheel hub of automobile tire blowout according to claim 1, characterized in that: The process notch consists of an arc portion and a straight portion.

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