JP3131903U - Lightweight wheel rim fixed tool set - Google Patents

Abstract

A threaded member that fits a wheel rim and also has sufficient strength and a corresponding sleeve.
A light weight wheel rim fixing tool set includes a sleeve and a screwing member, and the screwing member includes at least a force receiving portion, a polygonal stress portion, and a neck portion, and the neck portion has a force receiving portion and a polygonal shape. The outer diameter of the force receiving part is larger than the diameter of the circumscribed circle of the polygon, and the outer diameter size of the neck part is the outer diameter of the force receiving part and the diameter of the circumscribed circle of the polygonal stressed part. In the middle, the torsional force is distributed by the neck between the force receiving part and the polygonal stress part, the polygonal stress part is reduced from the force receiving part, the area of the force receiving part is increased, and the polygonal The stressed portion is made small so as to be adapted to the screw hole of a small wheel rim.
[Selection] Figure 4

Description

The present invention relates to a fixed tool set for a lightweight wheel rim, and more particularly, to a screwing member capable of reducing a stress portion size of a polygon and maximizing a force receiving portion area and a sleeve set corresponding thereto.

Automobiles are the main means of transportation in modern society, and automobile manufacturing technology is constantly innovating, and automobile wheel rims are also constantly being improved by changing vehicle types and safe driving designs. The wheel rim of an automobile has an important mission of fixing the tires and carrying the weight of the car body, and the wheel rim is constantly subjected to force while the vehicle is running, so it must be firmly and stably attached to the car body to maintain safe driving is required. The connection between the wheel rim and the vehicle body is mainly fixed with a nut through the shaft studs through a plurality of screw holes. As shown in FIG. 1, the conventional nut and sleeve are in contact with the force receiving portion 13 and the inner margin of the screw hole of the wheel rim, and the other end of the nut 1 is a polygonal stress portion. 14, the sleeve 2 is fitted, and the polygonal stress portion 14 has a maximum diagonal width a so that it is convenient for the user to rotate with force, and the force receiving portion 13 and the screw hole The larger the contact area with the inner margin, the more the stress is distributed. As the wheel rim rotates, the nut 1 can withstand even greater vibrations and torsional forces, making it more secure and longevity. Will be further extended. Since a small vehicle uses a small wheel rim, the screw holes of the nut 1 shown in FIG. 1 and the small size wheel rim are not compatible. Further, as shown in FIG. 2, the other conventional small nut 1 reduces the maximum diagonal width b of the polygonal stress portion 14 in accordance with the diameter of the screw hole. The force receiving portion 13 that comes into contact with the inner margin of the screw hole also shrinks accordingly, increasing the stress per unit area of the force receiving portion 13, shortening the life of the nut 1, and loosening and dropping off, thereby raising safety concerns. Will result. If only the force receiving portion 13 is enlarged in order to increase the area of the force receiving portion 13, the drop between the force receiving portion 13 and the polygonal stress portion 14 is too large. The torsional force that is applied to increases the possibility of tearing. As described above, since only the force receiving portion 13 cannot be enlarged and the difference from the polygonal stress portion 14 cannot be excessively increased, the above-described conventional method is provided in order to provide sufficient strength and life for protecting the driver's safety. The small nut 1 also needs improvement.

The above-mentioned conventional nut and sleeve set is not suitable for the screw hole of a small wheel rim, and the miniaturized screw member also has a problem of safety and durability shortage. It is an object of the present invention to provide a threaded member that fits the rim and also has sufficient strength, and a corresponding sleeve.

The present invention is a light weight wheel rim fixing tool set comprising a sleeve and a screwing member, of which one end of the sleeve has a polygonal groove, and the screwing member comprises a nut or a bolt. The bolt includes at least a force receiving portion, a polygonal stress portion, and a neck portion. When a nut is attached, the nut is further provided with a concave groove, the concave groove has a nut thread, and is screwed with the stud of the shaft. When the wheel rim is fixed and the bolt is attached, the bolt extends to exhibit a thread pillar state, and the force receiving portion of the nut or the bolt is bonded to the inner margin of the screw hole of the wheel rim to attach the wheel rim. Withstands vibration and external force when rotating. The polygonal stress portion is connected to a polygonal concave groove of the sleeve so that force can be easily applied, and at least one neck portion is provided between the force receiving portion and the polygonal stress portion. The outer diameter of the part is larger than the diameter of the circumscribed circle of the polygonal stressed part, and the outer diameter size of the neck part is intermediate between the outer diameter of the force receiving part and the diameter of the circumscribed circle of the polygonal stressed part Then, the torsional force of the neck portion between the force receiving portion and the polygonal stress portion is dispersed, and the polygonal stress portion can be reduced more than the force receiving portion, and the area of the force receiving portion can be reduced. As the size increases, the polygonal stress portion shrinks to fit into the screw holes in the small wheel rim.

Detailed description and technical contents regarding the present invention will be described below together with the drawings. 3, 4, and 5 are an embodiment, a three-dimensional exploded view, and a cross-sectional view of the sleeve and nut of the present invention. The light weight wheel rim fixing tool set includes a screw member and a sleeve 2, and the screw member is a nut 1, and the nut 1 includes a concave groove 11, a force receiving portion 13, a polygonal stress portion 14, and at least It consists of one neck portion 15, of which a nut thread 12 is provided in the concave groove 11. The force receiving portion 13 has an inclined surface and is provided on one side adjacent to the concave groove 11, the neck portion 15 is provided between the force receiving portion 13 and the polygonal stress portion 14, and the force receiving portion 13 is provided. And the torsional force of the neck portion 15 between the polygonal stress portions 14 is dispersed. The outer diameter of the force receiving portion 13 is larger than the diameter of the circumscribed circle of the polygonal stress portion 14, and the circumscribed circle is a circle that can be connected to each vertex of the polygonal stress portion 14. The diameter of the circumscribed circle of the stress portion 14 can represent the size of the polygonal stress portion 14, and the outer diameter size of the neck portion 15 is the outer diameter of the force receiving portion 13 and the polygonal stress portion 14. The outer diameter of the nut 1 is gradually reduced from the force receiving portion 13 to the polygonal stress portion 14, and the width of the polygonal stress portion 14 is c is smaller than the maximum diagonal a of the stress portion 14 of the conventional nut 1 (shown in the example of FIG. 1) and fits a small wheel rim 3 (shown in FIG. 6). The size of the connection end with 1 also decreases with this. A polygonal groove 21 is provided at one end of the sleeve 2, and the shape of the polygonal groove 21 is exactly matched to the polygonal stress portion 14, and the polygonal groove 21 is formed into the polygonal stress. It fits snugly into the part 14, and the other end has a connection part 22 to connect to the stress jig. The user fits the sleeve 2 into the nut 1, and the sleeve 2 and the nut 1 are rotated by the stress jig. Can be made.

FIG. 6 is a view showing an embodiment of the present invention, in which the lightening wheel rim fixing tool set is used to fix the wheel rim 3 to the stud 5 of the shaft of the automobile, and the stud 5 is a nut thread of the nut 1. 12 (shown in FIGS. 3 and 4) is provided. At least one neck portion 15 is attached to the nut 1, and the outer diameter of the polygonal stress portion 14 and the sleeve 2 can be reduced to fit a small wheel rim 3. When the wheel rim 3 is fixed by screwing the nut 1 and the stud 5 through the screw hole 31, the wheel rim 3 and the tire 4 can be firmly fixed. The inclined surface of the portion 13 has a sufficient area to be bonded to the inner margin of the screw hole 31, thereby having sufficient safety and durability.

FIG. 7 is a three-dimensional exploded view of the sleeve and bolt of the present invention. The screwing member of the present invention may be a bolt 6 adapted to a different fixing method of the wheel rim 3, and the bolt 6 is also a force receiving portion 63, a polygonal shape. It comprises a stress portion 64 and a neck portion 65, one side of the bolt 6 further extends a stud 61, and the stud 61 has a mail thread 62. The polygonal stress portion 64 distributes stress by the neck portion 65. The size of the sleeve 2 is reduced, and it is fitted into the polygonal groove 21 of the sleeve 2 so that the user can apply force to fix the wheel rim 3 to the vehicle shaft.

Although the present invention has already been disclosed in the preferred embodiment, it is not intended to limit the present invention. The connecting portion 22 for connecting the sleeve 2 to the stress jig may be a protruding polygonal column or a recess. The neck portion 15 (65) may be provided with two layers or more layers, and the outer diameter of the neck portion 15 of each layer is larger than the force receiving portion 13 with respect to the polygonal stress portion 14. Further, the force receiving portion 13 may be a circular arc surface, and any changes or modifications made by those skilled in the art without departing from the spirit of the present invention are all within the scope of the present invention. Therefore, the scope of protection of the present invention is based on what is defined in the attached patent application scope.

It is the aspect of the conventional nut and sleeve tool set. Figure 3 is another conventional nut and sleeve tool set embodiment. 1 is an embodiment of the sleeve and nut of the present invention. It is a three-dimensional exploded view of the sleeve and nut of the present invention. It is sectional drawing of the sleeve and nut of this invention. It is an Example figure of the sleeve and nut of this invention. It is a three-dimensional exploded view of the sleeve and bolt of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nut 11 Groove 12 Nut thread 13 Force receiving part 14 Polygonal stress part 15 Neck part 2 Sleeve 21 Groove 22 Connection part 3 Wheel rim 31 Screw hole 4 Tire 5 Stud 51 Mail thread 6 Bolt 61 Stud 62 Mail thread 63 Force receiving portion 64 Polygonal stress portion 65 Neck portion

Claims (6)

In the fixed tool set of lightweight wheel rims that screw the wheel rims into the shaft of the car body according to the screw hole size of the wheel rims,
A screwing member comprising a force receiving portion, a polygonal stress portion and at least one neck portion, the neck portion being installed between the force receiving portion and the polygonal stress portion, The torsional force of the neck portion between the polygonal stress portion and the outer diameter of the force receiving portion is larger than the diameter of each circumscribed circle of the apex connecting to the polygonal stress portion, The outer diameter of the force receiving portion is intermediate between the outer diameter of the force receiving portion and the diameter of the circumscribed circle of the polygonal stress portion, and the stress portion of the polygon is reduced from the force receiving portion, and the stress is averaged by the neck portion. To disperse,
A sleeve having one end having a polygonal groove, the polygonal groove is fitted into the polygonal stress portion, and the other end has a connection portion to be connected to the stress jig. A light weight wheel rim fixing tool set characterized by including. The fixed tool set for a lightweight wheel rim according to claim 1, wherein the screwing member is a nut having a concave groove. The fixed tool set for a lightweight wheel rim according to claim 1, wherein the screwing member is a bolt having a stud. The fixed tool set for a lightweight wheel rim according to claim 1, wherein the force receiving portion is an inclined surface to be bonded to an inner margin of a screw hole of the wheel rim. The fixed tool set for a lightweight wheel rim according to claim 1, wherein the force receiving portion is an arc surface to be bonded to an inner margin of a screw hole of the wheel rim. The neck portion is provided with two layers or more layers, and the outer diameter of each neck portion is gradually decreased from the force receiving portion toward the polygonal stress portion. Fixed tool set for the lighter wheel rim described.

Images