CN1250848A - Connecting elements and its manufacture method - Google Patents

Abstract

The invention provides a joint piece and a manufacturing method thereof. The joint piece can provide a good screw connection effect with a combined component. The manufacturing method is to separate the flange part and the shaft sleeve part of the joint, and wherein the shaft sleeve part and its internal thread are stamped and formed from a flat plate, and then bent into a shaft shape, and then the internal thread is cut and tapped. The thread is further tapped, so that each crest of the internal thread can be made neat and stable, which is beneficial to the screw locking of the combined parts and ensures the mutual screw force.

Description

A joint and its manufacturing method

The invention relates to a joint and its manufacturing method, in particular to a joint and its manufacturing method for riveting at least two components and providing screw lock.

The existing joint related to the present invention is shown in Figure 1, which is a joint that can be used on the connector to rivet and screw two components. The joint 8 includes a flange 80 and a shaft The sleeve part 81, wherein the shaft sleeve part 81 is integrally extended from the flange part 80, and is provided with a shaft hole 810 penetrating to the flange part 80. The shaft hole 810 is provided with an internal thread 811 at a deeper level, and the end edge is formed to facilitate Riveted thin stock. When in use, as shown in Figure 2, the sleeve part 81 can be put through the perforations of the desired combination components 90, 91, and the flange part 80 is used to abut one side of the two combination components, and the end of the sleeve part 81 The edge is riveted on the other side of the two combining components, so that the two combining components can be combined into one, and the internal thread 810 of the shaft sleeve part 81 is used to further screw the two combining components into one.

However, the existing joints are very cumbersome and inconvenient to manufacture, and there are many waste materials, and the internal thread processing for the screw lock is difficult and inaccurate. Please refer to the attached drawing 3, the existing joints are processed by turning first. The part is turned into a prototype with a flange part and a shaft sleeve part, and then the shaft hole is drilled in the shaft sleeve part by drilling method, and then the internal thread of the shaft hole is tapped by a tapping machine, and finally the detailed cutting step is completed. The size of the joint is small, so the above-mentioned steps are carried out on small materials. Not only is the processing difficult, the manufacturing cost is high, and the processing flow is cumbersome. The number of teeth is small, and the actual screwing force is not very ideal except that the processing requirements of the tapping step are high and difficult to carry out. Another processing method is to form the flange part and the shaft sleeve part in one piece by die-casting, and then form the internal thread by tapping without cutting. Although this processing method can save the steps of turning and drilling, the waste generated There are also fewer, but the peaks of the internal threads formed are not neat, resulting in poor screw fastening during screw locking. In addition to affecting the screw force, the internal threads are also easily damaged and not durable.

The main purpose of the present invention is to provide a method for manufacturing joints that is easy to manufacture, simple to assemble, and reduces the rate of defective products, thereby reducing costs and improving quality.

Another object of the present invention is to provide a joint that can provide a good screw connection effect with the joint member, and can ensure the screw force to make the joint firmly combined with the combined object.

The main feature of the manufacturing method of the joint member of the present invention is that the flange part of the joint part and the shaft sleeve part are separately arranged, and the shaft sleeve part and its internal thread are formed by stamping a flat plate, and then bent into a shaft shape. After being combined with the flange part, the internal thread is further tapped with a cutting tooth, so that each crest of the internal thread can be made neat and stable, which is beneficial to the screw locking of the combined parts and ensures the mutual screw force.

The feature of the joint structure of the present invention is that the shaft sleeve of the joint is combined with the flange part by a tight fit, and a stop device is provided between the flange part and the shaft sleeve part, and the setting of the stop device ensures When the connecting piece and the combined component are screwed together, there will be no turning phenomenon.

According to the above feature, wherein the stopping device includes a plurality of grooves arranged on the flange portion, and a protrusion arranged on the sleeve portion.

The joint provided by the invention has the advantages of easy manufacture, simple assembly, reliable and stable screw connection between the joint and the combined object, and the like.

Fig. 1 is a perspective view of a conventional joint.

FIG. 2 is a side view of a conventional joint member fixedly integrated with the insulating body and the shielding member of the connector.

Fig. 3 is the steps of the conventional method for manufacturing joints.

Fig. 4 is the steps of the manufacturing method of the joint member of the present invention.

Fig. 5 is an exploded perspective view of the joint of the present invention.

Fig. 6 is a three-dimensional assembled view of the joint of the present invention.

Fig. 7 is a perspective partial sectional view of the joint of the present invention.

Please refer to Fig. 4. The manufacturing method of joints of the present invention includes: first forming step 1, bending step 2, cutting and tapping step 3, second forming step 4 and combining step 5, etc., by which steps can be manufactured The joint piece composed of two components, that is, the first forming step 1, is to punch the metal stepped profiled material 10 into a predetermined specification (only one piece is shown in the figure, and several pieces can be stamped at a time during actual manufacturing), and in this One side of one side of the profiled metal material 10 is formed with thread lines 11 , and opposite to the other side of the thread lines 11 , three equidistant convex bodies 12 are formed. Afterwards, the bending step 2 is carried out to bend the above-mentioned metal shaped material stamped with the thread pattern 11 into a shaft shape with the thread pattern 11 as the inner layer by means of a bending jig (not shown), and then the second forming step 4 , another metal sheet is punched out of a square body through a punching machine (not shown), and a fisheye hole 40 with an outer diameter slightly smaller than the aforementioned shaft-shaped body is formed on the square body, and the inner periphery of the fisheye hole 40 forms three equidistant grooves 41. Then through combining step 5, the shaft-shaped body is inserted into the square body with a tight fit, and the convex body 12 on the shaft-shaped body is fitted into the groove 41 of the square body, so that the shaft-shaped body and the square body can be fixed It is integrated and can ensure that the screw will not rotate when locked. In addition, the joint surface of the bent shaft body can be fixed by spot welding. Then, in step 3 of cutting and tapping, the bent shaft is tapped by tapping machine 30 pairs of thread lines 11. If the crests of each thread are neat and stable, it can facilitate the screw lock of the joint and ensure Mutual screw force.

Continue referring to Fig. 5, it is the joint piece 6 that is manufactured according to this method, and this joint piece 6 has flange portion 60 and axle sleeve portion 61, and wherein this flange portion 60, is square body, is provided with fish on it. The eye hole 601, and the inner periphery of the fish eye hole 601 is provided with three grooves 602, and the sleeve part 61 includes a round shaft body 610 and a lip 611, wherein the outer diameter 6101 of the round shaft body 610 is slightly smaller than the aforementioned fish eye The hole 601 has an internal thread 6102, and the lip 611 of the end edge corresponds to the grooves 602 of the flange part 60, and is provided with a convex body 612. The assembled joint 6 is shown in Figure 6 and Figure 7 As shown, the sleeve part 61 is integrated with the flange part 60 by a tight fit, and with the cooperation of the protrusion 612 and the groove 602 as shown in Figure 5, not only the sleeve part 61 can be tightly fitted to the protrusion On the fisheye hole 601 of the edge portion 60 , the shaft sleeve portion 61 can be provided with stability when screwing without worry of twisting.

Claims (8)

1. connected member refers to a kind ofly with at least two member socket riveteds and the connected member of screw lock is provided especially, and this connected member comprises a lip part and a shaft sleeve part, it is characterized in that: lip part, be polygonal body, which is provided with fish eyelet, and the inner periphery of fish eyelet is provided with plural groove; Shaft sleeve part, comprise external diameter and be slightly less than fish eyelet, and circular shaft body with internal thread, and be located at the antelabium of circular shaft body ora terminalis, and is to be provided with convex body in antelabium corresponding to these grooves of lip part, so as to shaft sleeve part is tightly fitted in lip part, and make the groove inlay card one of the convex body and the lip part of shaft sleeve part.

2. connected member as claimed in claim 1 is characterized in that this lip part is a square body.

3. connected member as claimed in claim 1, it is characterized in that described internal thread be located at shaft sleeve part the circular shaft body than the depths.

4. the manufacture method of a connected member as claimed in claim 1 is characterized in that this method comprises: first forming step, and with the specification of metallic plate punching number section same size, and to the one side moulding screw thread lines of each small dimension sheet material; The small dimension sheet material that again impression is had the screw thread lines is that nexine is an axis body through the bending of bending tool with the screw thread lines; Second forming step, be with another sheet metal through stamping press, stamp out plural polygonal body, and form the fish eyelet that external diameter is slightly less than aforementioned axis body on each polygonal body; Axis body with first forming step is inserted on the polygonal body of second forming step at last; Again will in conjunction with after axis body through the tapping machine with the tapping of screw thread lines.

5. as connected member manufacture method as described in the claim 4, wherein first forming step is further in the small dimension sheet material of phase double thread lines another side, form some convex bodys, and in second forming step, further form the groove of plural number in the inner circumference edge of fish eyelet, make small dimension sheet material after bending is for axis body, can borrow these convex bodys to be embedded on the groove of polygonal body.

6. the manufacture method of connected member as claimed in claim 5 is characterized in that this metal plate material is to adopt stepped special-shaped material in first forming step, and in the last terrace shaping screw thread lines of stepped special-shaped material.

7. as the manufacture method of connected member as described in claim 4 or 6, it is characterized in that back further will the bending with welding step in the bending step is the jointing place welding of axis body.

8. as the manufacture method of connected member as described in the claim 7, it is characterized in that this polygonal body is to be square body.

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