KR19990040451U - Automotive wheel nut with loosening prevention function. - Google Patents

Abstract

The present invention relates to a wheel nut for automobiles having a loosening preventing function so that the loosening of the wheel nut is prevented even when the wheel nut is fastened below the prescribed tightening torque.

The structure of the present invention for this purpose is a wheel 10 for the vehicle is composed of a rim portion 11 to which the tire is coupled and a disk 14 which is tightly fixed on the disk rotor 12 or the hub 13 of the drum;

The hub hole 15 formed at the center of the disk 14 is coupled to the hub 13 and fixed to the hub 13, and bolts 17 protruding through the bolt hole 16 formed outside the hub hole 15. In constructing the wheel nut 20 is fastened to the;

When the spring 21 is embedded inside the wheel nut 20 and tightened to less than a prescribed torque, the wheel nut 20 is pushed outward of the bolt 17 by the spring 21 to prevent loosening. .

Description

Automotive wheel nut with loosening prevention function.

The present invention relates to a wheel nut for a vehicle having a loosening prevention function, and more particularly, to an improved wheel nut to prevent loosening of a wheel nut even when the wheel nut is fastened to less than a prescribed tightening torque.

A wheel for an automobile is composed of a rim for holding a tire to be engaged and a disc for mounting on a hub of a disc rotor or a hub of a drum, which is located at the inner diameter of the rim.

A hub hole is formed on the disc so that the hub of the disc rotor or the hub of the drum can be coupled, and the bolt hole for engaging the fastening bolt provided on the hub is radially formed on the outside of the hub hole.

There are various types of these wheels according to the vehicle type, and the classification by the vehicle type is for passenger cars and light trucks, for four-wheel drive vehicles and large vehicles, and the types are steel wheels, light alloy wheels, and wire spoke wheels.

In particular, light alloy wheels are used and mounted in the roots, and are processed on the basis of light metals such as aluminum and magnesium for the purpose of improving the weight reduction of the wheels and various pattern characteristics.

According to the type of processing, it is divided into casting wheel which is processed by integrally casting rim part and disc part, forged wheel that is forged and two piece and three piece wheel that separate and combine rim part and disk part.

The wheel as described above is coupled to the hub of the disc rotor or drum after the tire is coupled to the rim, and then coupled to the articulation by coupling the nut to the bolt protruding outward of the hub.

When the wheel nuts are coupled to the bolts, the wheel nuts may be tightened with a prescribed torque to prevent the wheels from being removed by external factors such as vibration or rocking that may occur during the driving of the vehicle.

In general, in the case of a passenger car, the normal specified torque is about 500 to 800 kg · cm, but a nut may be tightened below the specified torque due to an operator's fault.

As described above, when the wheel nut is tightened to a torque less than the prescribed value, the nut is loosened due to vibration, etc. when the vehicle is traveling, particularly when passing through the uneven portion or driving on an unpaved road.

When the wheel nut is loosened while driving, the wheel may be removed from the vehicle, thereby making it impossible to drive normally, leading to serious accidents, resulting in damage to the vehicle and loss of life.

However, until now, no special measures or devices have been taken to prevent the wheel nut from loosening when tightened to a torque below the specified value. There is an inconvenience, such as having to be equipped with a very high risk of accidents.

Therefore, the present invention has been devised to solve the above problems, and even when the wheel nut is tightened with a torque below the prescribed value inside the wheel nut, a means for preventing the wheel nut from being loosened is determined. The purpose is to allow risks to be excluded.

1 is a cross-sectional view of a wheel assembly to which a wheel nut of the present invention is applied.

2 is a cross-sectional view of the main portion of the present invention.

* Description of the symbols used in the main parts of the drawings *

10; Wheel

11; Limbu

15; disk

17; volt

20; Wheel nut

21; spring

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is a cross-sectional view of a wheel assembly to which a wheel nut of the present invention is applied, and FIG. 2 is a cross-sectional view illustrating an essential part of the present invention.

The wheel 10 for a vehicle is composed of a rim portion 11 to which a tire is coupled, and a disc 14 that is tightly fixed on the disc rotor 12 or the hub 13 of the drum.

The disk 14 of the wheel 10 is coupled to the hub 13 through the hub hole 15 in the center and the bolt hole 16 formed on the outside of the hub hole 15 is fixed on the hub 13 It is coupled to the bolt 17, the wheel nut 20 is coupled to the bolt 17 in a rigid state to secure the wheel 10.

In the present invention, the wheel nut 20 is prevented from being separated from the bolt 17 even when the wheel nut 20 is fastened to a predetermined torque or less within the wheel nut 20 for fixing the wheel 10.

The construction of the present invention for achieving the above object is to prevent the wheel nut 20 from being released by embedding a spring 21 having a certain elasticity in the interior of the wheel nut 20.

That is, even when the wheel nut 20 is fastened to the bolt 17 with the torque below the prescribed value, the wheel nut 20 is rotated in the ← direction while the spring 21 inserted into the wheel nut 20 is contracted by the tightening torque. Since the screw thread of the wheel nut 20 and the screw thread of the bolt 17 are always closely connected to each other, the wheel nut 20 is prevented from being loosened.

The present invention as described above has the effect that the wheel nut is prevented from being released even when the wheel nut is tightened with a torque of less than the prescribed value, so that the risk of detachment of the wheel can be excluded.

Claims (1)

The wheel 10 for an automobile is comprised of the rim part 11 with which a tire is coupled, and the disc 14 which closely adheres on the disc rotor 12 or the hub 13 of a drum; The hub hole 15 formed at the center of the disk 14 is coupled to the hub 13 and fixed to the hub 13, and bolts 17 protruding through the bolt hole 16 formed outside the hub hole 15. In constructing the wheel nut 20 is fastened to the; When the spring 21 is built into the wheel nut 20 and tightened to a predetermined torque or less, the wheel nut 20 is pushed out of the bolt 17 by the spring 21 to prevent loosening. Automotive wheel nut with loosening prevention function.