CN2833215Y

CN2833215Y - Anti-rotation wheel hub bolt for vehicle

Info

Publication number: CN2833215Y
Application number: CN 200520113968
Authority: CN
Inventors: 杨聪辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-18
Filing date: 2005-07-18
Publication date: 2006-11-01
Anticipated expiration: 2015-07-18

Abstract

The utility model discloses a rotation preventing wheel hub bolt, which comprises a screw rod and a bolt head, wherein the upper end of the cross section of the bolt head is narrow, and the lower end is wide; two side edges with gradual increased separation distance are arranged between the upper and the lower ends; one wide side of the bolt head is provided with a stable face, the upper end forms a circular arc shape and the lower end forms the circular arc shape which is matched with the arc face of a wheel hub. Compared with the traditional bolt, the utility model has bigger contact area with the arc face of the wheel hub. Because the increase of the contact area, the bolt can not rotate and loosen after fastened, the bolt head can be well matched with the arc face of the wheel hub and the bolt is not easy to rotate and damage wheel hub holes and can not cut the contact arc face of the wheel hub. Accordingly, connecting stability is improved and the service life of the wheel hub and the wheel hub bolt is increased.

Description

A kind of automobile-used anti-spinning roller hub bolt

Technical field

The utility model relates to a kind of bolt, is meant a kind of anti-spinning roller hub bolt that is used for fastening heavy-duty car wheel hub or rather.

Background technique

Realize being connected by bolt between the wheel hub of truck and the steel ring, for the convenience of installing and fastening after stability, generally all be provided with stability plane 12 on the side of bolt head, as Fig. 1, shown in Figure 2, cylindrical bolt head 11 is vertically cut a part of circular arc, as shown in Figure 3, the stabilising surface of this stability plane and wheel hub 7 leans during installation, can prevent that bolt rotates thereupon in the process of fastening nut, fastening back is difficult for loosening, but the stability plane 12 of this bolt head is too little with wheel hub 7 contacted areas, bolt head can cut the stabilising surface (dotted portion among the figure) of wheel hub 7 in the process of fastening nut, thereby cause bolt loosening rotation in wheel bore, the bolt after becoming flexible very easily is cut off under the situation of alternate load, thereby causes boss bolt short working life, wheel hub scrappage height.At this situation, Chinese patent ZL01259589.6 discloses a kind of wheel hub structure that prevents the bolt rotation, be shaped on the positioning groove that prevents the boss bolt rotation on the flange plate of this wheel hub, boss bolt crouches and is contained in the positioning groove, though this structure can effectively prevent the rotation of boss bolt, but must slot on wheel hub, operation is various, complex process, fabricating cost are higher.

The model utility content

At the deficiency that existing automobile-used boss bolt exists, when being to provide a kind of good stability simple in structure, fastening and assembling, the purpose of this utility model can not cut the automobile-used anti-spinning roller hub bolt of wheel hub cambered surface.

For achieving the above object, the automobile-used anti-spinning roller hub bolt of the utility model comprises screw rod and bolt head, and the first side of bolt is a stabilising surface, and this stabilising surface is a cambered surface, and its radian and contacted wheel hub cambered surface match.

The cambered surface of described stabilising surface for tilting.

The upper end of described bolt head cross section is a circular arc, and promptly the bolt head upper end is a cambered surface.

The dual-side that described spacing increases gradually is a lineal shape, and promptly the bolt head both sides are the plane.

Wide 30～the 50mm in the lower end of described bolt head cross section.

The wide 40mm in the lower end of described bolt head cross section.

The edges and corners rounding of described bolt head.

The utility model increases the length of stabilising surface by the shape that changes existing cylindrical bolt head, it is the area of contact of bolt and wheel hub cambered surface, to have stabilising surface length now and increase to 40 millimeter by 20 millimeters, because the increase of surface of contact, can not rotate after the bolton and get loose, change stability plane into cambered surface simultaneously after, bolt head can coincide with the wheel hub cambered surface better, bolt is difficult for rotation and damages wheel bore, also can not cut the wheel hub contacting surface.

Description of drawings

Fig. 1 is the structural representation of existing boss bolt;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 is that the existing boss bolt of figure is fastened on the structural representation on the wheel hub;

Fig. 4 is the partial schematic sectional view of the utility model boss bolt;

Fig. 5 is that the B of Fig. 4 is to view;

Fig. 6 is fastened on structural representation on the wheel hub for the utility model boss bolt.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As Fig. 4, shown in Figure 5, bolt head 1 is fixed on the end of screw rod 2, be more flat Cylindrical object, upper end 3 narrower, lower end 4 broads of its cross section, lower end 4 wide 40mm, the side 5 and the side 6 that increase gradually for spacing between upper end 3 and the lower end 4, the lower end 4 of bolt head 1 is and wheel hub 7 stabilized contact faces, upper end 3 is a circular arc, and lower end 4 is a circular arc, and promptly the upper end of bolt head 1 and stabilising surface are cambered surface, the both sides of bolt head 1 are the plane, like this can be better match, improve its anti-rotation performance, the edges and corners rounding of bolt head 1 with the cambered surface of wheel hub 7.As shown in Figure 6, when bolton after on the wheel hub 7 because the increase of area of contact, bolt head 1 is difficult for the dotted portion of wheel hub 7 shown in the cutting figure, thereby can not rotate phenomenon.Certainly, the stabilising surface of the utility model bolt can be processed into the cambered surface of the inclination along the bolt axis towards the screw rod end, with working life and the assembling adaptive capacity that improves bolt.

Claims

1, a kind of automobile-used anti-spinning roller hub bolt comprises screw rod and bolt head, and the first side of bolt is a stabilising surface, it is characterized in that, this stabilising surface is a cambered surface, and its radian and contacted wheel hub cambered surface match.

2, automobile-used anti-spinning roller hub bolt according to claim 1 is characterized in that, the cambered surface of described stabilising surface for tilting.

3, automobile-used anti-spinning roller hub bolt according to claim 2 is characterized in that the upper end of described bolt head cross section is a circular arc, and promptly the bolt head upper end is a cambered surface.

4, automobile-used anti-spinning roller hub bolt according to claim 3 is characterized in that the dual-side that described spacing increases gradually is a lineal shape, and promptly the bolt head both sides are the plane.

5, automobile-used anti-spinning roller hub bolt according to claim 4 is characterized in that the wide 30～50mm in the lower end of described bolt head cross section.

6, automobile-used anti-spinning roller hub bolt according to claim 5 is characterized in that the wide 40mm in the lower end of described bolt head cross section.

7, automobile-used anti-spinning roller hub bolt according to claim 6 is characterized in that the edges and corners rounding of described bolt head.