Anti-falling hub

Abstract

The utility model discloses an anti-drop hub which comprises a hub body, a plurality of inner sawtooth-shaped protruding parts are formed on the wall face, close to a bead seat at the inner end, of a rim of the hub body, and a plurality of outer sawtooth-shaped protruding parts are formed on the wall face, close to a bead seat at the outer end, of the rim. The tire is fixed through the inner sawtooth-shaped protruding part and the outer sawtooth-shaped protruding part and is prevented from falling off, so that the tire can continue to run normally when the tire pressure is insufficient.

Description

Technical field:

[0001] The utility model relates to the technical field of automobile parts, and more specifically to an anti-slip wheel hub. Background technology:

[0002] The wheel hub is a cylindrical metal part with the inner profile of the tire supporting the tire, and the center is mounted on the shaft. There are many types of wheel hubs according to diameter, width, molding method, and material. The wheel hub generally includes the rim, spokes, flange, bead seat, etc.

[0003] After the existing wheel hub is installed with a tire and used, the tire often has punctures, air leakage, insufficient tire pressure and other phenomena. At this time, the tire is easy to deviate or even fall off the wheel hub while the wheel continues to drive. Without the protection of the tire, the wheel hub directly contacts the ground and it is easy to cause the wheel hub to deform and damage. In this way, the entire wheel hub needs to be replaced during maintenance, which increases the loss. Utility model content:

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an anti-slip wheel hub, which fixes the tire and prevents it from slipping off by means of an inner sawtooth convex portion and an outer sawtooth convex portion, so that the tire can continue to run normally when the tire pressure is insufficient.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A wheel hub with an anti-slipping function includes a wheel hub body, a wall surface of a wheel rim near the inner end of the wheel hub body having a plurality of inner sawtooth shaped protrusions, and a wall surface of a wheel rim near the outer end of the wheel hub body having a plurality of outer sawtooth shaped protrusions. The inner sawtooth shaped protrusions and the outer sawtooth shaped protrusions fix the tire and prevent it from slipping, so that the tire can continue to run normally when the tire pressure is insufficient.

[0007] The sharp end of the inner sawtooth-shaped protrusion extends obliquely inward.

[0008] The sharp end of the outer sawtooth-shaped protrusion extends obliquely outward.

[0009] The sharp ends of the inner sawtooth shaped protrusion and the outer sawtooth shaped protrusion are formed with arc chamfers.

[0010] An inner raised limiting portion with an inclined top surface is formed on the wall surface of the bead seat at the outer side of the inner sawtooth raised portion.

[0011] An external protrusion limiting portion is formed on the top surface of the bead seat at the left side of the external sawtooth protrusion.

[0012] The outstanding effects of the utility model are:

[0013] Compared with the prior art, the tire is fixed and prevented from falling off by means of the inner serrated protrusion and the outer serrated protrusion, so that the tire can continue to run normally when the tire pressure is insufficient. Description of the drawings:

[0014] Figure 1 It is a partial structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 A partial enlarged view of

[0016] Figure 3 yes Figure 1 a partial enlarged view of another part;

[0017] Figure 4 It is a schematic diagram of the local structure at the inner sawtooth convex part;

[0018] Figure 5 yes Figure 4 There is also a part of the size diagram. Specific implementation method:

[0019] For example, see Figures 1 to 5 As shown, an anti-slip wheel hub is installed on an off-road vehicle, which can provide better tire stability and reduce the risk of tire slipping during off-road driving.

[0020] It includes a hub body 10, wherein a plurality of inner sawtooth-shaped protrusions 13 are formed on the wall surface of the rim 11 of the hub body 10 near the bead seat 12 at the inner end, and the sharp end of the inner sawtooth-shaped protrusion 13 extends obliquely inward. The top surface of the bead seat 12 at the inner end is a 5° inclined surface, and the distance between the top of the inner sawtooth-shaped protrusion 13 and the top surface of the bead seat 12 at the inner end is 0.9 mm. If the top of the inner sawtooth-shaped protrusion 13 is too high from the top surface of the bead seat 12 at the inner end, the tire cannot be installed in place, and if it is too low, the resistance to the tire cannot be achieved. At the same time, the top position of the tooth of the inner sawtooth-shaped protrusion 13 is formed with a circular arc chamfer with a radius of 0.1 mm. If it is not chamfered, it is easy to puncture the tire, and if it is too round, there is not enough resistance. The radius of the tooth bottom of the inner sawtooth-shaped protrusion 13 is 0.4 mm, which can ensure that there is enough depth of tire indentation from the top to the bottom of the tooth, and ensure sufficient resistance.

[0021] The left angle of the sawtooth of the inner sawtooth protrusion 13 is controlled between 15° and 20° (17.2° in this embodiment), and the right angle of the sawtooth of the inner sawtooth protrusion 13 is controlled between 60° and 65° (63.2° in this embodiment) to ensure that the tire has sufficient resistance during side sliding. The tooth pitch is controlled at 2.5mm to ensure that a part of the tire can fall between two tooth pitches. If the tooth pitch is too long, not enough sawtooth can be designed.

[0022] A plurality of external sawtooth shaped protrusions 14 are formed on the wall surface of the bead seat 12 near the outer end of the rim 11. The sharp ends of the external sawtooth shaped protrusions 14 extend obliquely outwards. The sharp ends of the external sawtooth shaped protrusions 14 are formed with arc chamfers.

[0023] The shape of the outer sawtooth shaped protrusion 14 is exactly the same as the inner sawtooth shaped protrusion 13 in mirror image, and will not be described in detail here.

[0024] Furthermore, an inner raised stopper 15 with an inclined top surface is formed on the wall surface of the bead seat 12 outside the inner sawtooth raised portion 13, and an arc-shaped transition wall surface is formed on the inner sidewall of the inner raised stopper 15. The inner raised stopper 15 is used to provide sufficient support for the tire during side sliding.

[0025] An outer raised stopper 16 is formed on the top surface of the bead seat 12 at the left side of the outer sawtooth raised portion 14. The top surface of the outer raised stopper 16 is higher than the top of the outer sawtooth raised portion 14. The outer end of the outer raised stopper 16 is formed with a chamfer with a radius of 0.3mm to 0.6mm, and 0.5mm in this embodiment. This position can be partially embedded in the tire, effectively increasing the resistance of the tire to slip. The outer raised stopper 16 is used to provide sufficient support for the tire during side sliding. Among them, the outer raised stopper 16 is designed to be 1.4mm higher than the national standard, so that when the tire slides out of the hump, the tension suddenly increases, and the tire can be better controlled on the inner side of the corresponding bead seat 12.

Claims

1. An anti-slip wheel hub, comprising a wheel hub body (10), characterized in that: A plurality of inner sawtooth-shaped protrusions (13) are formed on the wall surface of the bead seat (12) near the inner end of the rim (11) of the hub body (10), and a plurality of outer sawtooth-shaped protrusions (14) are formed on the wall surface of the bead seat (12) near the outer end of the rim (11).

2. The anti-slip hub according to claim 1, characterized in that: The sharp end of the inner sawtooth-shaped protrusion (13) extends obliquely inwards.

3. The anti-slip hub according to claim 1, characterized in that: The sharp end of the outer sawtooth-shaped protrusion (14) extends obliquely outward.

4. The anti-slip hub according to claim 1, characterized in that: The sharp ends of the inner sawtooth-shaped protrusion (13) and the sharp ends of the outer sawtooth-shaped protrusion (14) are formed with circular arc chamfers.

5. The anti-slip hub according to claim 1, characterized in that: An inner protruding limiter (15) having an inclined top surface is formed on the wall surface of the tire bead seat (12) at the outer side of the inner sawtooth protruding portion (13), and an arc-shaped transition wall surface is formed on the inner side wall of the inner protruding limiter (15).

6. The anti-slip hub according to claim 1, characterized in that: An external protrusion limiting portion (16) is formed on the top surface of the tire bead seat (12) at the left side of the external sawtooth-shaped protrusion (14), the top surface of the external protrusion limiting portion (16) is higher than the top end of the external sawtooth-shaped protrusion (14), and the upper part of the outer end of the external protrusion limiting portion (16) is formed with a chamfer with a radius of 0.3 mm to 0.6 mm.

Images