JPS5826162Y2 - automotive wheels - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wheel made of a suspension alloy, and particularly to an automobile wheel in which an insert is fixed to the nut seat of a pressed disc to improve strength.

Generally, automobile wheels are mounted on a vehicle by passing the wheel bolt of the hub through a bolt hole drilled in the wheel disc, and tightening it with a nut.The nut seat of the disc wheel is Strength is required to withstand the thrust and external forces caused by tightening the wheel nuts.

In the case of steel wheels, a nut seat in the shape of a slightly protruding hill is formed in the bolt hole of the disc, and when the wheel is attached to the hub of the vehicle, the momentary disc failure that occurs during driving is prevented. Its role is to use elastic restoring force to prevent the tightening nut from loosening even if it is deformed.

However, the nut seat of a wheel that uses a disc formed by integral molding or press processing from a drawn suspension material such as aluminum alloy, for which demand has been increasing in recent years, forms a protruding nut seat similar to steel wheels. However, since the mechanical properties and hardness of the material are low, the contact surface of the wheel tightening nut may become loose and the tightening nut may become loose, making it impossible to tighten the nut sufficiently.

This invention solves the above-mentioned drawbacks, and provides an automobile wheel in which the strength of the nut seat is increased without causing loosening of the nut or deformation of the nut seat when tightening even when the wheel is made of suspension alloy. That is.

Hereinafter, embodiments of this invention will be described in detail based on the accompanying drawings.

Figure 1 is a general cross-sectional view of a wheel, which is composed of a rim 1, a disc 2, and a nut seat 4 with a predetermined bolt hole 3 for mounting the wheel. As shown in FIG. 2, the provided bolt hole 3 has a predetermined tapered surface 3a located on the side of the tightening nut 5.

The conical surface 5a of the tightening lug 150 comes into contact with this tapered surface 3a, thereby preventing the nut seat 4 from being deformed by the thrust and rotational torque caused by tightening the nut and by bending during running.

As shown in FIG. 3, the disc 2 of the light alloy wheel according to this invention has a mounting hole T and a counterbore 7a formed in advance into which the steel insert 6 is press-fitted so that the insert 6 is fixed therein.

A predetermined bolt hole 8 is formed in the insert 6, and a collar 9 having a counterbore larger in diameter than the bolt hole 8 is formed on one end side, and the back surface of the collar 9 contacts the nut seat 4. A rotation stopper 9a that is knurled or serrated is formed on the side.

The insert 6 is press-fitted into the mounting hole 7 drilled in the disk 2 as shown in FIG. It gets stuck and gets stuck.

The suspension metal disc 2 with the insert 6 fixed in this way
is fixed so that the end surface of the insert 6 on the side of the collar 9 is slightly inside the plane of the disc 2, and when it is attached to the hub of the vehicle and fastened with the tightening nut 5, the end surface of the collar 9 will be on the hub surface of the vehicle. It is formed to fit closely.

FIG. 5 shows another embodiment of the insert 6 according to this invention. In order to bring the wheel bolt of the vehicle hub closer to the center of the tapered surface 8a of the disc 2, a guide hole 10 is formed that is approximately close to the diameter of the bolt. is formed on the collar 9 side of the insert 6.

As mentioned above, even if the wheel according to this invention has a disc made of light alloy such as aluminum alloy, the part that contacts the conical surface of the tightening nut is made of steel, so when it is fastened to the hub of a vehicle, the steel wheel disc Similarly, this prevents deformation and damage of the nut seat due to thrust rotational torque applied to the nut seat due to nut tightening and bending due to external force while the vehicle is running, and has a practical effect.

[Brief explanation of drawings]

Figure 1 is a sectional view of the wheel, Figure 2 is an enlarged sectional view of the main parts,
Fig. 3 is a sectional view showing the main part of this invention, Fig. 4 A is a sectional view showing the process of Fig. 3, and Fig. 5 is a sectional view of the main part showing another embodiment of this invention. . 1...Rim, 2...Disc, 3...
...Bolt hole, 3a...Tapered surface, 4...
... Nut seat, 5 ... Tightening nut, 5a.
...Conical surface, 6...Insert, 7...
...Mounting hole, 1a...Counterbore, 8...
...Bolt hole, 8a...Tapered surface, 9...
... Tsuba, 9a... Rotating stop, 10...
・Guide hole.

Claims (1)

[Scope of utility model registration request] A mounting hole and a counterbore are formed into which the insert is press-fitted into the nut seat formed on the desk of the light alloy wheel, and a bolt hole and a flange are formed in the insert, and a bolt hole and a flange are formed on the back side of the flange, which is located on the nut seat side. to form a rotation stopper for the knurling or serrations, press fit the insert into the mounting hole of the nut seat, and form a tapered surface in contact with the conical surface of the tightening nut located at the counterbore of the nut seat. An automobile wheel characterized by being fixed by caulking.