Riveting studs for concealed injection molded parts

Abstract

The present invention discloses a riveted stud for injection molded parts with concealed shapes, and relates to the technical field of hardware parts. The riveted stud for injection molded parts with concealed shapes comprises a base plate, a nut is welded on the top of the base plate, and a threaded column is connected to the inner thread of the nut, the bottom end of the threaded column passes through the bottom of the base plate, and two curved sheets are symmetrically attached to the left and right sides of the top of the threaded column, and the opposite sides of the two curved sheets are tightly attached, and the cavity formed by the two curved sheets is cylindrical. The riveted stud for injection molded parts with concealed shapes, by providing a disassembly mechanism, greatly facilitates the removal of the part located on the outer surface of the installed part after the nut and the threaded column are installed, thereby reducing the area occupied by the stud body on the surface of the injection molded part, thereby ensuring the subsequent use of the injection molded part, and at the same time, the special design of the disassembly mechanism greatly improves the disassembly efficiency of the stud.

Description

Technical Field

[0001] The invention relates to the technical field of hardware parts, in particular to a riveting stud used for an injection molded part with a concealed shape. Background Art

[0002] Pull rivet nuts, pull caps, instant pull caps, in the field of fastening, are currently widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, instruments, furniture, and decoration. It was developed to solve the shortcomings of easy melting of welded nuts on metal sheets and thin tubes, and easy slipping of tapped internal threads. It does not require tapping internal threads, does not require welding nuts, has strong riveting efficiency, and is easy to use. Pull rivet nuts are usually used in conjunction with studs. If the nuts of a certain product need to be installed outside, and the space inside is small, the pressure head of the riveting machine cannot enter for pressure riveting, and methods such as budding cannot meet the strength requirements, then pressure riveting and expansion riveting are not feasible. Pull rivets must be used. When the part is used for injection molding, there are many structural parts exposed to the outside of the injection molding, which can easily affect the subsequent processing of the injection molding. Therefore, it is necessary to effectively reduce the volume of the stud located on the surface of the injection molding. Utility Model Content

[0003] Based on the existing technical problems, the present invention proposes a riveting stud for a concealed-shape injection-molded part.

[0004] The present invention proposes a riveting stud for injection molded parts with concealed shapes, comprising a base plate, a nut welded on the top of the base plate, and a threaded column connected to the inner thread of the nut, the bottom end of the threaded column passes through the bottom of the base plate, and two curved sheets are symmetrically attached to the left and right sides of the top of the threaded column, and the opposite sides of the two curved sheets are tightly attached, the cavity formed by the two curved sheets is cylindrical in shape, and the tops of the opposite sides of the two curved sheets are provided with thread grooves, and the thread grooves of the two curved sheets are butt-jointed to form a complete thread section, and magnetic sheets are embedded on the adjacent sides of the two curved sheets, the tops of the two curved sheets are attached to the bottom of the nut, and a thread block is welded to the bottom of the nut, the thread block is threadedly connected to the complete thread section formed by the two thread grooves, and the bottoms of the opposite sides of the two curved sheets are provided with disassembly mechanisms.

[0005] Preferably, the diameter of the thread block matches the diameter of the cylindrical cavity formed by the two curved sheets being fitted together, and the thickness of the thread block is smaller than the length of the thread groove.

[0006] Preferably, the two magnetic sheets are attracted to each other by magnetic force, and the magnetic force of the magnetic sheets is greater than the dead weight of the curved sheet.

[0007] Preferably, the disassembly mechanism includes a first magnetic ring, a second magnetic ring, a through hole, a first threaded barrel, a first screw, a second threaded barrel, a second screw and an adhesive sheet. The first magnetic ring is embedded in the top end of the threaded column. There are two second magnetic rings, and the two second magnetic rings are respectively embedded in the bottoms of the two curved sheets. The through hole is opened in the lower half of the curved sheet and passes through the left and right sides of the curved sheet. The first threaded barrel is welded to the inner side of the curved sheet and connected to the through hole. The first threaded barrel is threadedly connected with the first screw. The right end of the first screw is inserted into one side of the second threaded barrel, and the second threaded barrel is threadedly connected with the second screw. The bottom end of the second screw is inserted into the top end of the threaded column. The adhesive sheet is sleeved on the second threaded barrel, and the bottom of the adhesive sheet is bonded to the top end of the threaded column.

[0008] Preferably, the first magnetic ring and the second magnetic ring are magnetically attracted to each other, and the first magnetic ring is located below the curved sheet.

[0009] Preferably, one end of the curved piece opposite to the first threaded barrel is fitted with the side surface of the second threaded barrel, and the rear end of the first screw is located in the through hole.

[0010] The beneficial effects of the present invention are:

[0011] 1. By setting up the disassembly mechanism, it is greatly convenient to remove the part located on the outer surface of the installed part after the installation of the nut and the threaded column is completed, thereby reducing the area occupied by the stud body on the surface of the injection molded part, thereby ensuring the subsequent use of the injection molded part. At the same time, the special design of the disassembly mechanism greatly improves the disassembly efficiency of the stud, thereby achieving a concealed installation effect on the surface of the injection molded part.

[0012] 2. By providing the thread groove and the thread block, it is convenient to take the nut out of the curved piece. At the same time, the connection method of magnetic sheet adsorption further facilitates the separation of the two curved pieces, thereby improving the convenience of using the stud. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the present invention;

[0014] Figure 2 For the present invention Figure 1 A magnified view of the structure in the middle.

[0015] In the figure: 1 bottom plate, 2 nut, 3 threaded column, 4 curved plate, 5 threaded groove, 6 magnetic plate, 7 nut, 8 threaded block, 9 disassembly mechanism, 91 first magnetic ring, 92 second magnetic ring, 93 through hole, 94 first threaded barrel, 95 first screw, 96 second threaded barrel, 97 second screw, 98 adhesive plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-2 A riveting stud for injection molded parts with concealed shapes, comprising a bottom plate 1, a nut 2 is welded on the top of the bottom plate 1, and a threaded column 3 is connected to the inner thread of the nut 2, the bottom end of the threaded column 3 passes through the bottom of the bottom plate 1, and two curved pieces 4 are symmetrically attached to the left and right sides of the top of the threaded column 3, and the opposite sides of the two curved pieces 4 are tightly attached, the cavity formed by the two curved pieces 4 is cylindrical, and the tops of the opposite sides of the two curved pieces 4 are provided with thread grooves 5, and the thread grooves 5 of the two curved pieces 4 are connected to form a complete thread, and the two curved pieces 4 are connected to form a complete thread. A magnetic sheet 6 is embedded on the adjacent side of the curved sheets 4, the tops of the two curved sheets 4 are fitted with the bottoms of the nuts 7, and a threaded block 8 is welded to the bottom of the nut 7, the threaded block 8 is threadedly connected to a complete threaded segment formed by two threaded grooves 5, and a disassembly mechanism 9 is provided at the bottoms of the opposite sides of the two curved sheets 4, the diameter of the threaded block 8 matches the diameter of the cylindrical cavity formed after the two curved sheets 4 are fitted together, the thickness of the threaded block 8 is smaller than the length of the threaded groove 5, the two magnetic sheets 6 are magnetically attracted to each other, and the magnetic force of the magnetic sheet 6 is greater than the dead weight of the curved sheet 4.

[0018] The disassembly mechanism 9 includes a first magnetic ring 91, a second magnetic ring 92, a through hole 93, a first threaded barrel 94, a first screw 95, a second threaded barrel 96, a second screw 97 and an adhesive sheet 98. The first magnetic ring 91 is embedded in the top of the threaded column 3. There are two second magnetic rings 92, and the two second magnetic rings 92 are respectively embedded in the bottom of the two curved sheets 4. The first magnetic ring 91 and the second magnetic ring 92 are magnetically attracted to each other, and the first magnetic ring 91 is located below the curved sheet 4. The through hole 93 is opened in the lower half of the curved sheet 4 and runs through the left and right sides of the curved sheet 4. The first threaded barrel 9 4 is welded to the inner side of the curved sheet 4 and communicated with the through hole 93, and the first threaded barrel 94 is internally threadedly connected with the first screw 95, the right end of the first screw 95 is inserted into one side of the second threaded barrel 96, and the second threaded barrel 96 is internally threadedly connected with the second screw 97, the end of the first threaded barrel 94 opposite to the curved sheet 4 is in contact with the side surface of the second threaded barrel 96, the rear end of the first screw 95 is located in the through hole 93, the bottom end of the second screw 97 is inserted into the top end of the threaded column 3, the adhesive sheet 98 is sleeved on the second threaded barrel 96, and the bottom of the adhesive sheet 98 is bonded to the top end of the threaded column 3.

[0019] When in use, the bottom film 1 is fitted to the injection molded part and then welded, and the threaded column 3 is gradually screwed into the nut 2. After the fixation is completed, the nut 7 is turned to turn the threaded block 8 out of the thread groove 5, and the first screw 95 is taken out from the first threaded barrel 94 and the through hole 93 using a screwdriver, thereby pulling apart the two curved sheets 4, and finally the second screw 97 is taken out from the second threaded barrel 96 using a screwdriver, thereby removing the second threaded barrel 96, so that only the top of the threaded column 3 is exposed on the surface of the injection molded part.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A riveting stud for a concealed shape injection molded part, comprising a base plate (1), characterized in that: A nut (2) is welded to the top of the bottom plate (1), and the nut (2) is internally threadedly connected to a threaded column (3), the bottom end of the threaded column (3) passes through the bottom of the bottom plate (1), and two curved sheets (4) are symmetrically attached to the left and right sides of the top of the threaded column (3), and the two curved sheets (4) are tightly attached to the opposite sides, the cavity formed by the two curved sheets (4) is cylindrical in shape, and the tops of the opposite sides of the two curved sheets (4) are provided with thread grooves (5), and the thread grooves (5) of the two curved sheets (4) are butt-jointed to form a complete thread, and magnetic sheets (6) are embedded on the adjacent sides of the two curved sheets (4), the tops of the two curved sheets (4) are attached to the bottom of the nut (7), and a thread block (8) is welded to the bottom of the nut (7), and the thread block (8) is threadedly connected to the complete thread segment formed by the two thread grooves (5), and the bottoms of the opposite sides of the two curved sheets (4) are provided with disassembly mechanisms (9); The disassembly mechanism (9) comprises a first magnetic ring (91), a second magnetic ring (92), a through hole (93), a first threaded tube (94), a first screw (95), a second threaded tube (96), a second screw (97) and an adhesive sheet (98); the first magnetic ring (91) is embedded in the top end of the threaded column (3); the number of the second magnetic rings (92) is two, and the two second magnetic rings (92) are respectively embedded in the bottoms of the two curved sheets (4); the through hole (93) is formed in the lower half of the curved sheet (4) and passes through the left and right sides of the curved sheet (4); The first threaded barrel (94) is welded to the inner side of the curved sheet (4) and communicated with the through hole (93), and the first threaded barrel (94) is internally threadedly connected to a first screw (95), the right end of the first screw (95) is inserted into one side of the second threaded barrel (96), and the second threaded barrel (96) is internally threadedly connected to a second screw (97), the bottom end of the second screw (97) is inserted into the top end of the threaded column (3), and the adhesive sheet (98) is sleeved on the second threaded barrel (96), and the bottom of the adhesive sheet (98) is bonded to the top end of the threaded column (3); The first magnetic ring (91) and the second magnetic ring (92) are magnetically attracted to each other, and the first magnetic ring (91) is located below the curved sheet (4); One end of the first threaded tube (94) opposite to the curved piece (4) is in contact with the side surface of the second threaded tube (96), and the rear end of the first screw (95) is located in the through hole (93).

2. The riveting stud for a concealed shape injection molded part according to claim 1, characterized in that: The diameter of the threaded block (8) matches the diameter of a cylindrical cavity formed by the two curved sheets (4) being fitted together, and the thickness of the threaded block (8) is smaller than the length of the thread groove (5).

3. The riveting stud for a concealed shape injection molded part according to claim 1, characterized in that: The two magnetic sheets (6) are attracted to each other by magnetic force, and the magnetic force of the magnetic sheets (6) is greater than the deadweight of the curved sheet (4).

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