CN2522663Y

CN2522663Y - Automobile plate spring reinforced U-type bolt

Info

Publication number: CN2522663Y
Application number: CN 02209654
Authority: CN
Inventors: 薛连荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-07
Filing date: 2002-01-07
Publication date: 2002-11-27
Anticipated expiration: 2012-01-07

Abstract

The utility model relates to a fixture for the fixation of autocar armor plate spring, namely an automobile plate spring reinforced U-shaped bolt. The utility model comprises a U-shaped bolt, screw thread at the two ends of the bolt, and a screw cap screwed on the screw thread. The U-shaped bolt is thickened-forged at the U crook so as to enhance the strength at the point. The utility mode is of safe operation, and enhances the service life of the U-shaped bolt.

Description

The reinforced U bolt of automobile leaf spring

Technical field: the utility model relates to a kind of jig that is mainly used in the fixed car leaf spring, i.e. the reinforced U bolt of automobile leaf spring.

Background technique: in prior art, the U bolt that is used for fixing automobile leaf spring comprises the screw thread at U bolt, its two ends place, reaches and twist the nut that is connected on the screw thread, its shortcoming is to be with the direct simmering and bending of bolt shank in the U crook, because of plastic deformation takes place in extruding cross section is diminished herein, the result easily ruptures at the U crook of being everlasting in actual use.

Summary of the invention: the purpose of this utility model is to provide a kind of high-intensity automobile leaf spring reinforced U bolt at above-mentioned deficiency.

Be to realize the purpose of this utility model, the technical solution that is adopted is: the reinforced U bolt of automobile leaf spring comprise U bolt, its two ends place screw thread, and twist the nut that is connected on the screw thread.During fabrication, U bolt is forged in the U crook slightly, realized improving the purpose of intensity herein, thereby overcome the fracture in the use.Described forging is thick, is meant at U crook increasing cross-section area herein, or strengthens radial diameter from the inside to surface in this cross-section.

The utility model has the advantages that: cross-section area has been strengthened in the U crook at U bolt, has improved join strength and tensile strength herein, thereby safe in utilization, has improved U bolt working life.

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

Description of drawings: Fig. 1 is a structure diagram of the present utility model;

Fig. 2 is that Fig. 1 is along the A-A sectional drawing;

Fig. 3 is that Fig. 1 is along the B-B sectional drawing.

Embodiment: referring to Fig. 1, the reinforced U bolt of automobile leaf spring comprises the screw thread 2 at U bolt 1, its two ends place and can twist the nut (figure slightly) that is connected on the screw thread.U crook 3 at U bolt 1 is forged thick.The main die-forging forming that adopts.In order to improve the intensity of U bolt 1, can also forge the stiffening rib 7 of protrusion at the curved bottom outer round surface of U.

Referring to Fig. 2, a kind ofly forge solid example and be meant and remain semicirclely 4 at the cross section of U crook 3 near the part of the inside, be the arc 5 of evagination near the part of outside.

Referring to Fig. 3, the solid example of another kind of forging is meant circles 6 such as the cross section in the U crook still remains, and forges the stiffening rib 7 of protrusion at outer round surface.Stiffening rib is not limited to one.

Described forging slightly can also be that the cross section in U crook 3 is swaged into the cross section that is equal to or greater than the body of bolt, and the diameter when needing only than direct simmering and bending slightly just can reach the purpose of enhancing.

Above-mentioned just U bolt is forged thick in the U crook, thereby reaches the example of the intensity that strengthens this place, but the example that only provides is not limit in protection.

Claims

1, the reinforced U bolt of a kind of automobile leaf spring, comprise U bolt (1), its two ends place screw thread (2), and twist the nut be connected on the screw thread, it is characterized in that U bolt (1) forges thick in U crook (3).

2, according to the reinforced U bolt of the described automobile leaf spring of claim 1, it is characterized in that described forging slightly is meant at the cross section of U crook (3) to remain semicircle (4) near the part of the inside, be the arc (5) of evagination near the part of outside.

3,, it is characterized in that described forging is meant that slightly cross section in U crook (3) still remains etc. circular (6), and forge the stiffening rib (7) of protrusion at outer round surface according to the reinforced U bolt of the described automobile leaf spring of claim 1.

4,, it is characterized in that described forging is meant that slightly the cross section in U crook (3) is swaged into the cross section that is equal to or greater than the body of bolt according to the reinforced U bolt of the described automobile leaf spring of claim 1.