CN2154931Y

CN2154931Y - Structure for buried nut

Info

Publication number: CN2154931Y
Application number: CN 93215105
Authority: CN
Inventors: 郭辉贵
Original assignee: XINYAO Industrial Co Ltd
Current assignee: XINYAO Industrial Co Ltd
Priority date: 1993-06-09
Filing date: 1993-06-09
Publication date: 1994-02-02
Anticipated expiration: 2003-06-09

Abstract

The utility model relates to a pre-buried screw nut structure. Mainly, the outer edge of the screw hole of a screw nut is extended with a laminar flange. After the flange passes through a combining hole arranged on a workpiece, the flange is folded outward and is pressed flat through punching operation, so as to achieve that the flange is compactly clamped on the combining hole. Meanwhile, the hexagonal surface point of a punching die corresponding to the screw nut is provided with a plurality of punching claws which can punch a plurality of sunk clamping points on the workpiece at the same time when the flange is punched. The sunk clamping points are used for limiting the horizontal rotation movement of the screw nut and avoiding the occurrence of idle rotation when the utility model is assembled, so as to achieve the pre-buried screw nut structure which is more convenient for assembling works.

Description

Structure for buried nut

The utility model is the structure about a kind of Embeded nut, refers to a kind of predetermined fixed especially on object, to be convenient to the Embeded nut structure of assembling work.

On the spare part assembly line in modern times, striving for installation time and requiring quality accurately has been the main points of having in mind on the manufacturing efficiency.Figure 1 shows that generally with the fixing mode of two spare part A, B combination, but this kind fit must rely on both hands carries out simultaneously, in case the nut D of another side produces idle running during the moving bolt C of spline, and when the nut D working space E in wherein being hidden in parts A, B was not enough, this kind locking mode will can't be had an effect fully.Therefore be to have the dead mode on object of the direct weldering of nut D is produced (as shown in Figure 1), though help property easy to assembly on the object and nut D is directly welded in, it is right because the high temperature of weld job often makes the mating face F distortion of object, simultaneously the internal thread G of nut D itself also can Yin Gaowen and be out of shape, and causes losing and can't lock problems such as nut D in conjunction with validity even bolt C.

The purpose of this utility model is to overcome the structure that proposes a kind of Embeded nut of novelty in the above-mentioned prior art with the welding existing shortcoming of Embeded nut.

The purpose of this utility model reaches like this, a kind of structure of Embeded nut promptly is provided, it is provided with an outward extending thin slice flange in the outer rim of the screw of nut, flange is arranged in the joining hole of object, via punching press flange is outwards flattened, and at the blocking point that stamps out several depressions corresponding to place, the plane of nut outer rim on the object preventing the mutual rotation between nut and the object, and nut is folded on the object securely.

Embeded nut structure of the present utility model has following advantage:

(1) utilize semi-automatic or full automatic stamping press can carry out the burying work beforehand of nut to each object, efficient is high more than modes such as other welding.

(2) punching presses can reach fixing and the omnirange clipping, and are all very simple and easy on the textural and means of fixation, are suitable for entering present automatic production pattern.

(3) not only nut can not cause the distortion on object mating face in the fixing back of punching press, and number place's blocking puts formed surface tension, will more help the non-deformability of this bolt-lock point.

(4) can full-automation carry out owing to this pre-buried mode, so validity and quality can be far above traditional approachs; Even pre-buried with manual type, its efficient and validity are also far above traditional bolt-lock mode.

Describe the utility model in detail below with reference to accompanying drawing, among the figure:

Fig. 1 is the bolts assemblies organigram of prior art;

Fig. 2 is the schematic representation with the welding manner hold-doun nut of prior art;

Fig. 3 is the perspective exploded view of structure of the present utility model;

Fig. 4 is one the schematic perspective view of cutting of structure of the present utility model;

Fig. 5 is a pre-buried punching press schematic representation of the present utility model;

Fig. 6 is the sectional view after the assembling of the present utility model.

To consult accompanying drawing below and describe the present invention in detail.

At first see also Fig. 3, as shown in the figure, the utility model mainly is original joining hole 11 on the utilization object 1, the utility model Embeded nut 2 directly is embedded on this joining hole 11, its inserted structure (please consulting Fig. 4, Fig. 5 simultaneously) is to be that screw 21 outer rims extend outward a laminar flange 22 in the internal diameter edge of nut 2, when this flange 22 penetrates in the joining hole 11 of object, more send in the punch die 3 outstanding flange 22 is outwards flattened, nut 2 is fixed on the joining hole 11 of object 1 to utilize the clamping mode; Simultaneously, because this only is to fix in Vertical direction, in this nut 2 of substantially horizontal in the assembling locking action in, still might be rotation moves, therefore, the inventor has number place to be surrounded on around the nut 2 in design on the punch die 3, and it is corresponding towards pawl 31 with the hexaplanar 23 of nut 2, when reaching the downward punching press of this punch die 3, on object 1, go out the blocking point 12 of number place depression simultaneously corresponding to hexaplanar 23 peripheries, to utilize this number place blocking point 12 to fasten the hexaplanar 23 of nut 2, consolidate its unlikely generation idle running in the assembling locking action.

See also Fig. 6 again, in the actual sets allotment of labor did, locked object spare 1 can bury pre-this nut 2 in advance in previous operations, and provide on the assembly line operation only again the tight bolt 4 of bolt get final product, whether fixing of the nut 2 of not worrying again reaches assembly operation more easily.

In embodiment described above, prevent that the rotation between embedded nut and the object from being the blocking point that stamps out depression on object 1, but it can substitute also with thrusting the clip of routing up.Used nut 2 can be the nut of hexagon nut, square toes nut or other form.

Claims

1, a kind of structure of Embeded nut, the outer rim that it is characterized by at the screw (21) of nut (2) is provided with an outward extending thin slice flange (22), be arranged in by this flange in the joining hole (11) of object (1), via punching press flange (22) is outwards flattened, and go up the blocking point (12) of locating to stamp out several depressions corresponding to the plane (23) of nut outer rim at object (1) preventing the mutual rotation between nut and the object, and nut (2) is folded on the object (1) securely.

2, the structure of Embeded nut as claimed in claim 1, it is characterized by described nut (2) is hexagon nut or square toes nut.

3, the structure of Embeded nut as claimed in claim 1, the blocking point that it is characterized by the described depression that stamps out can be and thrust the clip routed up and substitute.