KR101972307B1 - Anti-theft wheel nuts and its manufacturing method - Google Patents

Abstract

The present invention relates to an anti-theft wheel nut apparatus and a method of manufacturing the same, which are capable of reducing the processing time and cost by separately manufacturing the body and the key forming unit of the wheel nut separately from each other and forming a key with reference to the base track unit, A body having a screw hole formed at a part thereof to be fastened to a screw part formed on a wheel wheel of the wheel and a head part formed at the other part; And a key-forming portion formed on the head portion and having a key-shaped groove portion for preventing wheel theft, wherein a receiving groove portion is formed in the head portion of the body, and the key- And a protective lid formed to have a through hole formed therein so as to allow the key forming portion to be exposed to the outside and to surround the side surface of the head portion so as to protect the side surface of the head portion The receiving groove portion of the head portion communicates with the screw hole of the body and the key forming portion may further include another groove portion which extends inward from the lower surface of the groove portion and communicates with the screw hole when the receiving groove portion is press- have.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anti-

The present invention relates to an anti-theft wheel nut apparatus and a manufacturing method thereof, and more particularly, to a wheel nut body and a key forming unit which are separately manufactured as separate parts, and a key is formed based on a base track unit, And a method of manufacturing the wheel nut device.

BACKGROUND ART Generally, in automobiles, wheels are formed by assembling a wheel of a wheel provided with a tire on a wheel shaft that transmits a rotational driving force with a wheel nut. These wheels share the weight of the automobile together with the tire, Is an essential component of an automobile which must have sufficient durability and rigidity to withstand the torque of the vehicle, impact from the road surface, centrifugal force and centripetal force at the time of turning, and lateral force generated when the car is tilted.

The method of fixing these wheels to the hub can be roughly classified into two methods. First, the wheel nut is fastened with the bolts embedded in the hub. Secondly, the nut is threaded on the hub and then the wheel bolt There is a way to fix the wheel by tightening.

These wheels are provided with bolt holes for mounting the bolts. The bolt holes are holes that are larger than the original diameter of the holes to accommodate bolts or small screws. Particularly, since a special wheel bolt is used for the wheel of an automobile, such a wheel bolt can be fastened by using a socket wrench. These socket wrenches can be used to tighten or loosen the wheel nuts.

On the other hand, in countries where security is unstable and economic difficulties are serious or automobiles are expensive, there is a frequent theft accident in which wheel nuts are unlocked and wheels are cut off.

In this regard, many anti-theft technologies such as Korean Registration Practice No. 0123897, Registration Practice No. 0181573, Registration No. 1979-0001370, and United States Patent No. 4,869,633 are disclosed.

However, such conventional anti-theft wheel nut techniques imprint key grooves of a unique pattern on the surface of the wheel nut that can not be solved by a conventional tool, such that while the key groove is formed directly on the surface of the nut, There is a problem that the operation of loading, engraving, surface treatment, and precise unloading of the nuts is troublesome and troublesome, thereby increasing processing time and processing cost.

Also, as the machining pressure of the key groove cutting tool is increased, the damage rate of the nut is increased, so that there is a limit in the machining operation, the defect occurrence rate is increased due to the damage of the nut due to the jig, and productivity is greatly decreased.

In addition, since it is necessary to process a complicated path such as a serpentine tool in a random shape such as a meander or a corrugated shape, the precision and reproducibility of the cut key groove are greatly deteriorated, and there are many problems such as a difference in depth between grooves, .

In addition, it is impossible to assemble or disassemble the nut when the key groove is damaged due to an excessive external force when assembling or disassembling the nut or in case of the loss of the loosening tool. As a result, There were problems that could not be done.

SUMMARY OF THE INVENTION The present invention has been made to solve such conventional problems, and it is an object of the present invention to provide a nut body that is commonly used, and a key forming portion is separately processed and assembled to a body, This reduces the machining time and machining cost, reduces the defect occurrence rate due to the nut damage, increases the productivity, reduces the cost of the parts, makes the base track part common, and hardens other track parts, And reproducibility can be greatly improved, and a good quality product can be produced by preventing the occurrence of erroneous machining. In case of loss of the loosening tool or breakage of the key groove, the nuts can be disassembled or assembled by removing only the key- Wheel nut device and a method of manufacturing the same. However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided an anti-theft wheel nut device comprising: a body having a screw hole formed at a portion thereof to be fastened to a screw portion formed on a wheel wheel of a vehicle; And a key-forming portion formed on the head portion and having a key-shaped groove portion for preventing wheel theft, wherein a receiving groove portion is formed in the head portion of the body, and the key- And a protective lid formed to have a through hole formed therein so as to allow the key forming portion to be exposed to the outside and to surround the side surface of the head portion so as to protect the side surface of the head portion The receiving groove portion of the head portion communicates with the screw hole of the body and the key forming portion may further include another groove portion which extends inward from the lower surface of the groove portion and communicates with the screw hole when the receiving groove portion is press- have.

Further, according to the present invention, the receiving groove portion may be formed by selecting at least one of a tooth groove portion, a hexagonal groove portion, a rectangular groove portion, a polygonal groove portion, an elliptical groove portion, and combinations thereof.

Further, according to the present invention, the groove portion may be a company logo or a random number generating groove portion.

According to some embodiments of the present invention as described above, it is not necessary to pay careful attention to damage to other parts, thereby facilitating the operation, thereby reducing machining time and machining cost, lowering the failure rate due to nut damage, The base track portion is made common and only the other track portions are hardened to greatly improve the precision and reproducibility of the cut key groove and to prevent the erroneous processing phenomenon and to produce a good quality product, It is possible to disassemble or assemble the nut by removing only the key forming part in case of loss of the tool or breakage of the key groove part. Of course, the scope of the present invention is not limited by these effects.

1 is an external perspective view illustrating an anti-theft wheel nut apparatus in accordance with some embodiments of the present invention.
2 is a front view of the anti-theft wheel nut device of FIG.
3 is a partially exploded perspective view of the anti-theft wheel nut apparatus of FIG.
Fig. 4 is a longitudinal sectional view of the anti-theft wheel nut apparatus of Fig. 1;
5 is a cross-sectional view of the anti-theft wheel nut device of FIG.
FIG. 6 is a perspective view of the state of use of the anti-theft wheel nut apparatus and socket member of FIG. 1;
7 is a front view showing a key forming part of a anti-theft wheel nut device according to some other embodiments of the present invention.
8 is a flowchart illustrating a method of manufacturing a anti-theft wheel nut device in accordance with some embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term " and / or " includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise " and / or " comprising " when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

1 is an exterior perspective view illustrating an anti-theft wheel nut apparatus 100 in accordance with some embodiments of the present invention. Fig. 2 is a front view of the antitheft wheel nut device 100 of Fig. 1, Fig. 3 is a partially exploded perspective view of the anti-theft wheel nut device 100 of Fig. 1, 5 is a cross-sectional view of the anti-theft wheel nut apparatus 100 of Fig. 1. Fig.

1 to 5, the anti-theft wheel nut apparatus 100 according to some embodiments of the present invention may include a body 10 and a key forming unit 20.

For example, as shown in FIGS. 1 to 4, a screw hole 10a is formed in a part of the body 10 so as to be fastened to a screw part formed on a wheel wheel of the vehicle, And may be a structure having sufficient durability and strength to support the wheel of the vehicle.

4, the body 10 is manufactured as a separate part from the key forming part 20 to be described later. The key forming part 20 can be received by the body 10, A receiving groove 11a formed in a shape corresponding to the key forming part 20 may be formed on the head 11. [

5, the receiving groove portion 11a is formed so as to allow the twist pressing force applied to the key forming portion 20 to be faithfully transmitted to the body 10, as shown in FIG. A tooth groove portion 11a-1 in which zigzag-shaped teeth such as teeth are formed in the outer direction can be applied to the inner diameter surface.

However, the receiving groove portion 11a is not limited to the illustrated tooth groove portion 11a-1, and may be a hexagonal groove portion, a pentagonal groove portion, a square groove portion, a polygonal groove portion, an elliptical groove portion, All of the various types of grooves made by selecting are applicable.

The body 10 may be manufactured by a variety of methods such as casting, cutting, extrusion or die casting. Preferably, the body 10 may be manufactured using a forging process in which a steel material is pressed by a forging press.

1 to 5, the key forming unit 20 includes a key-shaped groove 21 formed in the head 11 so as to prevent wheel striking, , And can be press-fitted into the receiving groove portion 11a without interference.

More specifically, for example, the key forming portion 20 may be formed in a shape corresponding to the receiving groove portion 11a so as to be press-fitted into the receiving groove portion 11a.

5, the key-forming unit 20 may be a zigzag-like (or a zigzag-like) type of gear so as to faithfully transmit the twist pressing force applied to the key-forming unit 20 to the body 10. [ A tooth protrusion in which the teeth are formed in the outer direction can be applied to the side surface.

However, the key forming portion 20 is not limited to the tooth protruding portion 11a-1 shown in FIG. 1, and may be any one of a hexagonal protrusion, a pentagonal protrusion, a rectangular protrusion, a polygonal protrusion, All of the protrusions having various shapes can be applied.

2, the groove 21 formed in front of the key forming part 20 may be a company logo 21-1 in which a key projection K is partially formed . Here, the key projection K may correspond to the key projection T of the socket member S, which will be described later, and may serve as a key to prevent the key projection K from hanging.

However, the groove 21 is not necessarily limited to the company logo 21-1, and a random number generating groove to be described later may be applied.

The key forming part 20 may also be manufactured by various methods such as casting, cutting, extrusion or die casting. However, preferably, the base part may be manufactured using a forging process in which a steel material is pressed by a forging press And the groove portion 21 can be cut on the base portion by using a separate cutting tool.

In the meantime, according to some embodiments of the present invention, the anti-theft wheel nut apparatus 100 has a through hole 30a formed therein so that the key forming unit 20 can be exposed to the outside, And a protective lid 30 formed to surround the side surface of the head 11 so as to protect the side surface of the head 11.

By using the protective lid 30, the body 10 as well as the head 11 can be protected, and the appearance of the vehicle can be enhanced.

Fig. 6 is a perspective view showing the state of use of the anti-theft wheel nut device 100 and the socket member S of Fig. 1. Fig.

Accordingly, when the socket member S is brought into contact with the key forming portion 20 exposed frontward of the protective lid 30 and the socket member S is pressed with a torque wrench, an air gun or the like, A key protruding portion T having a unique shape formed on a corresponding surface of the key forming portion 20 of the key top S is rotated to rotate the main body 10 while being engaged with the key forming portion 20, .

Such a socket member S is provided only to the car owner when the vehicle is delivered. Since the socket member S of the present invention can not be rotated without the socket member S, the wheel theft can be prevented in advance.

Therefore, as described above, the body 10 is shared, and only the key-forming portion 20 is separately machined to be assembled to the body 10, so that while cutting the groove 21, It is possible to reduce the processing time and the machining cost, and the failure rate is lowered due to the damage of the body 10, so that the productivity is improved and the unit cost can be reduced.

Further, when the loosening tool is broken or the key groove portion is damaged, the nut may be disassembled or assembled by using a common tool such as a tooth wrench or a hempen lance to remove only the key forming portion.

7 is a front view of a key forming portion 20 of an anti-theft wheel nut device 200 according to some other embodiments of the present invention.

7, the groove portion 22 of the key forming portion 20 of the anti-theft wheel nut device 200 according to some other embodiments of the present invention may be formed as a recessed portion, And may include a base track portion 23 and an outer track portion 24 and an inner track portion 25 in place of the logo 21-1.

For example, the base track portion 23 may be a ring-shaped track-shaped groove portion having a first radius R1 constant around the center point P and disposed at a 360 degree angle.

The outer track portion 24 may extend outward in the radial direction of the base track portion 23 and may have a second radius R2 larger than the first radius R1 about the center point P, ), And may be a partial track-shaped groove portion having a partial arc-like shape and disposed at a first angle A1 at a first arc length L1.

For example, the inner track portion 25 may extend inward in the radial direction of the base track portion 23 and may have a third radius R3 (R3) smaller than the first radius R1 about the center point P , And a partial track-shaped groove portion having a partial arc shape and arranged at a second angle (A2) with a second arc length (L2).

Therefore, by using the outer track portion 24 and the inner track portion 25 of the random number generating combination having various radii, various angles, and various arc lengths in the base track portion 23, A groove portion can be manufactured.

Therefore, since the base track portion 23 is shared and only the other track portions 24 and 25 are hardened, the grooved portion is easy to move the position of the cutting tool and uses a simple path. Therefore, Can be greatly improved, and a high quality product can be produced by preventing the phenomenon of erroneous processing.

8 is a flowchart illustrating a method of manufacturing a anti-theft wheel nut device in accordance with some embodiments of the present invention.

As shown in FIG. 8, in the method of manufacturing the anti-theft wheel nut apparatus according to some embodiments of the present invention, a screw hole 10a is formed in a part to be fastened to a screw portion formed on a wheel of a vehicle, (10) having a head part (11) formed at the other part; And a key forming part 20 formed on the head part 11 and having a key-shaped groove 21 formed to prevent wheel theft. A base track part forming step (step) of forming a ring-shaped base track part 23 having a constant first radius R1 around the center point P and disposed at a 360 degree angle in the key forming part 20, (S1); And a second radius R2 larger than the first radius R1 about the center point P and extending outward in an outer diameter direction of the base track portion 23 after the base track portion forming step S1, (S2) for forming an external track portion (24) having a first circular arc length (L1) at a first angle (A1) in the key forming portion (20) ; (R3) smaller than the first radius (R1) about the center point (P) and extending inward in the radial direction of the base track part (23) after the base track part forming step (S3) for forming an internal track portion (25) having a partial arc shape and a second arc length (L2) at a second angle (A2) in the key forming portion (20) ); ≪ / RTI >

In this method, since the base track part 23 can be used in common, the grooves cut by only hydriding only the other track parts 24 and 25 can move the cutting tool smoothly, Therefore, the accuracy and reproducibility of cutting are greatly improved, and a good quality product can be produced by preventing the phenomenon of erroneous machining.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Body
11: Head
20: key forming part
21, 22:
23: base track part
24: External track part
25: inner track portion
30: protective cover
100, 200: Anti-theft wheel nut device

Claims (3)

A body in which a screw hole is formed in a part to be fastened to a screw part formed on a wheel wheel of the vehicle and a head part is formed in the other part; And
And a key-forming portion formed on the head portion and having a key-shaped groove portion for preventing wheel theft,
A receiving groove formed in the head of the body,
The key forming portion is press-fitted into the receiving groove portion by interference fit,
A protective lid formed to have a through hole so that the key forming part can be exposed to the outside and to surround the side surface of the head part so as to protect the side surface of the head part;
Further comprising:
The receiving groove portion of the head portion communicates with a screw hole of the body,
Wherein the key forming portion further includes another groove portion extending inward from the lower surface of the groove portion and communicating with the screw hole when the receiving groove portion is press-
Wherein the receiving groove portion includes a tooth groove portion on an inner diameter surface thereof and the key forming portion has a tooth protrusion portion corresponding to the tooth groove portion on a side surface thereof so that a twist pressing force applied to the key forming portion can be transmitted to the body.
Anti-theft wheel nut device. delete The method according to claim 1,
Wherein the key-shaped groove portion is a company logo or a random number generating groove portion.

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