Special-shaped Ball Head Rivet for Automobile Hinge Bracket and Its Processing Technology

Abstract

The present invention discloses a special-shaped ball head rivet for an automobile hinge bracket and its processing technology, belonging to the technical field of automobile processing and production. The special-shaped ball head rivet for an automobile hinge bracket includes a riveting column. A cylindrical groove is drilled at the right end of the riveting column. A plurality of communication grooves connected to the cylindrical groove are drilled at the outer end of the riveting column. A locking strip is rotatably connected in the communication groove through a rotary connection mechanism, and the outer end of the locking strip extends into the cylindrical groove. A broken line groove is provided at one end of the locking strip located in the cylindrical groove. An opening and closing ball cooperating with the locking strip is arranged in the cylindrical groove. A screw rod is fixedly connected to the left end of the opening and closing ball, and the screw rod penetrates through the riveting column and is threadedly connected to the riveting column. A hollow screw column is fixedly connected to the left end of the riveting column. It enables the staff to position the hinge bracket only by simple common tools, with flexible use. Moreover, during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after the positioning is completed, it can be recycled and reused.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile processing, and more specifically, to a special-shaped ball head rivet for an automobile hinge bracket and its processing technology. Background Art

[0002] A hinge, also known as a hinge or door hinge, is a mechanical device used to connect two solids and allow relative rotation between the two. In an automobile, the doors of the automobile and the body are connected by hinges. The hinges can ensure and maintain the position of the doors relative to the body, and ensure and facilitate the opening and closing of the doors. The part where the hinge is fixedly connected to the door or the body is called a hinge bracket. The connection between the hinge bracket and the door or the body is mainly divided into bolt connection and welding connection.

[0003] When the hinge bracket is connected to the mounting plate of the door or the body by welding, it is usually necessary to use corresponding positioning rivets to position the hinge bracket (that is, positioning holes are provided on both the hinge bracket and the mounting plate, and the positioning rivets are driven into the corresponding positioning holes for positioning), so as to prevent the hinge bracket from being displaced during the welding process.

[0004] However, in the actual use of the existing positioning rivets, there are the following problems: 1. The existing rivets usually need to use a special rivet gun for assembly. When the rivet gun is lacking, the rivets cannot be used to position the hinge; 2. After the existing positioning rivets are assembled, they are in a tightened state. When the staff needs to adjust the position of the hinge bracket, only the assembled positioning rivets can be disassembled, which is very inconvenient; 3. The existing positioning rivets are usually disposable consumables, which are difficult to recycle and reuse, resulting in great waste. Summary of the Invention

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a special-shaped ball head rivet for an automobile hinge bracket, which enables the staff to position the hinge bracket only through simple common tools, is flexible to use, and during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after the positioning is completed, it can be recycled and reused.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] Special-shaped ball head rivet for automobile hinge bracket, including a riveting post. A cylindrical groove is drilled at the right end of the riveting post. A plurality of communication grooves communicating with the cylindrical groove are drilled at the outer end of the riveting post. A locking bar is rotatably connected in the communication groove through a rotary connection mechanism, and the outer end of the locking bar extends into the cylindrical groove. A folding groove is provided at one end of the locking bar located in the cylindrical groove. An opening and closing ball cooperating with the locking bar is arranged in the cylindrical groove. A screw rod is fixedly connected to the left end of the opening and closing ball, and the screw rod penetrates through the riveting post and is threadedly connected with the riveting post. A hollow screw post is fixedly connected to the left end of the riveting post, and the left end of the screw rod penetrates through the hollow screw post and extends to the left side of the hollow screw post. A screwing block is connected to the left end of the hollow screw post. A limiting ring is fixedly connected to the outer end of the riveting post, and the limiting ring is located on the left side of the locking bar. A pressing hemispherical head is sleeved on the hollow screw post, and the pressing hemispherical head is connected to the riveting post through an elastic connection mechanism. A fastening hemispherical head is threadedly connected to the outer end of the hollow screw post, and the fastening hemispherical head is located on the left side of the pressing hemispherical head. This solution enables the staff to position the hinge bracket only with simple and common tools, with flexible use. Moreover, during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after the positioning is completed, it can be recycled and reused.

[0010] Further, the folding groove includes a triangular groove and an inclined surface groove that communicate with each other, and the triangular groove is located on the right side of the inclined surface groove. The opening and closing ball is located in the triangular groove. The triangular groove and the opening and closing ball cooperate with each other to control the opening and closing of the locking bar, and the inclined surface groove can effectively prevent the screw rod from hindering the rotation of the locking bar.

[0011] Further, the rotary connection mechanism includes a rotating shaft. A through hole matching the rotating shaft is drilled at the outer end of the locking bar, and the rotating shaft penetrates through the through hole. A pair of wedge-shaped blocks symmetrically distributed are arranged on the outer side of the locking bar. A conical column is fixedly connected to one end of the wedge-shaped block close to the rotating shaft. Conical grooves matching the conical columns are drilled at both ends of the rotating shaft, and the conical columns extend into the conical grooves at their corresponding positions. Wedge-shaped grooves matching the wedge-shaped blocks are drilled at the outer end of the riveting post, and the wedge-shaped blocks extend into the wedge-shaped grooves at their corresponding positions and are bonded to the riveting post through a metal binder. Each component of the rotary connection mechanism is formed by a clamping structure, which is convenient for assembly. Moreover, the wedge-shaped blocks are bonded to the riveting post through a metal binder, which not only has high connection strength but also is not likely to have an adverse impact on the structural strength of the riveting post and the wedge-shaped blocks.

[0012] Further, a square rod is fixedly connected to the left end of the screw rod. A square groove matching the square rod is drilled at the right end of the screwing block, and the square rod extends into the square groove and is bonded to the screwing block through a metal binder.

[0013] Further, the elastic connection mechanism includes a part fixedly connected to the right end of the pressing hemispherical head. The outer end is fixedly connected with a fixed support ring. A moving support ring is sleeved on the outside and located on the left side of the fixed support ring. A compression spring is sleeved on the outside and located between the moving support ring and the fixed support ring. A through hole is drilled at the left end of the riveting post, and a hollow stud is sleeved on the riveting post. A pair of semi-cylindrical covers matching the riveting post are arranged on the outer side of the riveting post, and the two semi-cylindrical covers are sleeved on the outside and bonded to the riveting post through a metal binder.

[0014] Further, the riveting post, the hollow stud and the limiting ring are integrally formed. The opening and closing ball and the screw rod are integrally formed. The pressing hemispherical head and [the other part] are integrally formed. Each integrally formed part is machined from the same workpiece by milling.

[0015] Further, the mutually remote ends of the pressing hemispherical head and the fastening hemispherical head are of spherical structure. The mutually close ends of the pressing hemispherical head and the fastening hemispherical head are of planar structure. The spherical structure can make the pressing hemispherical head and the fastening hemispherical head have higher strength. And the spherical structure at the right end of the pressing hemispherical head can better cooperate with the positioning hole of the hinge bracket, and can also facilitate the staff to pull the pressing hemispherical head. The planar structure enables the fastening hemispherical head to better press the pressing hemispherical head.

[0016] Further, six planar grooves are opened at the outer ends of the pressing hemispherical head and the fastening hemispherical head, and the six planar grooves are distributed in a regular hexagon, so that the pressing hemispherical head and the fastening hemispherical head can be conveniently screwed by the staff with a wrench.

[0017] Further, the specific number of the communication grooves and the locking bars is four, and the four locking bars are equally spaced on the riveting post.

[0018] The processing technology of the special-shaped ball head rivet for the automobile hinge bracket includes the following steps:

[0019] S1: Component forming: Each component is processed and formed by a milling device;

[0020] S2: Installation of the opening and closing ball: The screw rod is threadedly connected with the riveting post, and the opening and closing ball is made to enter the cylindrical groove;

[0021] S3: Installation of the locking bar: First, the rotating shaft is passed through the through hole, then the wedge block is clamped to both ends of the rotating shaft through the mutual cooperation of the tapered column and the tapered groove. After that, the wedge block is clamped into the wedge groove on the riveting post. Finally, the wedge block is bonded to the riveting post with a metal binder;

[0022] S4: Attachment Hemisphere Head Installation: First, successively sleeved the moving support ring, compression spring, and fixed support ring on the outside, then bonded the fixed support ring on it through a metal binder. Then, sleeved the right end of the attachment hemisphere head inside the riveting post. After that, sleeved two semi-cylindrical covers outside the fixed support ring, moving support ring, and compression spring. Subsequently, bonded the two semi-cylindrical covers through a metal binder, and at the same time bonded the two semi-cylindrical covers to the riveting post.

[0023] S5: Fastening Hemisphere Head and Knob Installation: First, threadedly connect the fastening hemisphere head to the hollow stud, and then bond the square rod on the screw to the square groove on the knob through a metal binder.

[0024] 3. Beneficial Effects

[0025] Compared with the prior art, the advantages of the present invention are as follows:

[0026] (1) This solution enables the staff to position the hinge bracket only with simple and common tools, with flexible use. Moreover, during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after positioning, it can be recycled and reused.

[0027] (2) The folding groove includes a triangular groove and an inclined plane groove that are interconnected, and the triangular groove is located on the right side of the inclined plane groove. The opening and closing ball is located in the triangular groove. The triangular groove and the opening and closing ball cooperate with each other to control the opening and closing of the locking bar, while the inclined plane groove can effectively prevent the screw from hindering the rotation of the locking bar.

[0028] (3) The mutually remote ends of the attachment hemisphere head and the fastening hemisphere head are spherical structures, and the mutually close ends are flat structures. The spherical structure can make the attachment hemisphere head and the fastening hemisphere head have higher strength. Moreover, the spherical structure at the right end of the attachment hemisphere head can better cooperate with the positioning hole of the hinge bracket and also facilitate the staff to pull the attachment hemisphere head. The flat structure enables the fastening hemisphere head to better press the attachment hemisphere head.

[0029] (4) Six flat grooves are provided at the outer ends of the attachment hemisphere head and the fastening hemisphere head, and the six flat grooves are distributed in a regular hexagon, so that the attachment hemisphere head and the fastening hemisphere head can be conveniently turned by the staff with a wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural view of the present invention;

[0031] Figure 2 is a schematic internal structural view of the present invention;

[0032] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0033] Figure 4 are structural schematic diagrams of each component of the present invention in a disassembled state;

[0034] Figure 5 is an internal structural schematic diagram of the riveting post of the present invention;

[0035] Figure 6 is a right-side structural schematic diagram of the riveting post of the present invention;

[0036] Figure 7 is a structural schematic diagram of the semi-cylindrical cover of the present invention;

[0037] Figure 8 is a cross-sectional schematic diagram of the pressing hemispherical head and the fastening hemispherical head of the present invention;

[0038] Figure 9 is an internal structural schematic diagram during the working process of the present invention.

[0039] Explanation of reference numerals in the figure:

[0040] 1 Riveting post, 2 Cylindrical groove, 3 Connecting groove, 4 Locking strip, 5 Opening and closing ball, 6 Folding line groove, 601 Triangular groove, 602 Inclined plane groove, 7 Rotating connection mechanism, 701 Rotating shaft, 702 Through hole, 703 Wedge block, 704 Conical column, 705 Conical groove, 706 Wedge groove, 8 Screw, 801 Square rod, 9 Hollow stud, 10 Screwing block, 11 Limiting ring, 12 Pressing hemispherical head, 13 Elastic connection mechanism, 1301 Connecting pipe, 1302 Fixed support ring, 1303 Moving support ring, 1304 Compression spring, 1305 Annular groove, 1306 Semi-cylindrical cover, 14 Fastening hemispherical head. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection or an electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] Embodiment 1:

[0045] Please refer to Figure 1 , a special-shaped ball head rivet for an automotive hinge bracket, including a rivet post 1. Please refer to Figures 5 - 6 , a cylindrical groove 2 is drilled at the right end of the rivet post 1, and a plurality of communication grooves 3 connected to the cylindrical groove 2 are drilled at the outer end of the rivet post 1. Please refer to Figures 1 - 2 , a lock bar 4 is rotatably connected in the communication groove 3 through a rotary connection mechanism 7, and the outer end of the lock bar 4 extends into the cylindrical groove 2. A folding groove 6 is provided at one end of the lock bar 4 located in the cylindrical groove 2. An opening and closing ball 5 cooperating with the lock bar 4 is provided in the cylindrical groove 2. A screw rod 8 is fixedly connected to the left end of the opening and closing ball 5, and the screw rod 8 penetrates through the rivet post 1 and is threadedly connected to the rivet post 1. A hollow screw column 9 is fixedly connected to the left end of the rivet post 1, and the left end of the screw rod 8 penetrates through the hollow screw column 9 and extends to the left side of the hollow screw column 9. A wrench block 10 is connected to the left end of the hollow screw column 9. A limiting ring 11 is fixedly connected to the outer end of the rivet post 1, and the limiting ring 11 is located on the left side of the lock bar 4. A pressing hemispherical head 12 is sleeved on the hollow screw column 9, and the pressing hemispherical head 12 is connected to the rivet post 1 through an elastic connection mechanism 13. A fastening hemispherical head 14 is threadedly connected to the outer end of the hollow screw column 9, and the fastening hemispherical head 14 is located on the left side of the pressing hemispherical head 12. This solution enables the staff to position the hinge bracket only through simple common tools (i.e., a wrench), with flexible use. Moreover, during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after the positioning is completed, it can be recycled and reused.

[0046] Please refer to Figure 2 and Figure 9 , the folding groove 6 includes a triangular groove 601 and an inclined groove 602 that are interconnected, and the triangular groove 601 is located on the right side of the inclined groove 602. The opening and closing ball 5 is located in the triangular groove 601. The triangular groove 601 cooperates with the opening and closing ball 5 to control the opening and closing of the lock bar 4, and the inclined groove 602 can effectively prevent the screw rod 8 from hindering the rotation of the lock bar 4.

[0047] Please refer to Figures 2 - 3, the rotation connection mechanism 7 includes a rotating shaft 701. A through hole 702 matching the rotating shaft 701 is drilled at the outer end of the locking bar 4, and the rotating shaft 701 passes through the through hole 702. A pair of symmetrically distributed wedge-shaped blocks 703 are arranged on the outer side of the locking bar 4. A tapered column 704 is fixedly connected to one end of the wedge-shaped block 703 close to the rotating shaft 701. Tapered grooves 705 matching the tapered column 704 are drilled at both ends of the rotating shaft 701, and the tapered column 704 extends into the tapered groove 705 at its corresponding position. A wedge-shaped groove 706 matching the wedge-shaped block 703 is drilled at the outer end of the riveting post 1, and the wedge-shaped block 703 extends into the wedge-shaped groove 706 at its corresponding position and is bonded to the riveting post 1 through a metal binder. Each component of the rotation connection mechanism 7 is formed by a clamping structure, which is convenient for assembly. Moreover, the wedge-shaped block 703 is bonded to the riveting post 1 through a metal binder, which not only has high connection strength but also is not likely to have an adverse effect on the structural strength of the riveting post 1 and the wedge-shaped block 703.

[0048] Please refer to Figure 2 and Figure 4 , a square rod 801 is fixedly connected to the left end of the screw rod 8. A square groove matching the square rod 801 is drilled at the right end of the screwing block 10, and the square rod 801 extends into the square groove and is bonded to the screwing block 10 through a metal binder.

[0049] Please refer to Figure 2 and Figure 4 , the elastic connection mechanism 13 includes a connecting pipe 1301 fixedly connected to the right end of the pressing hemispherical head 12. A fixed support ring 1302 is fixedly connected to the outer end of the connecting pipe 1301. A moving support ring 1303 is sleeved on the connecting pipe 1301 on the left side of the fixed support ring 1302. A compression spring 1304 is sleeved on the connecting pipe 1301 between the moving support ring 1303 and the fixed support ring 1302. An annular groove 1305 is drilled at the left end of the riveting post 1, and the connecting pipe 1301 is sleeved on the annular groove 1305 of the riveting post 1. A pair of semi-cylindrical covers 1306 matching the riveting post 1 are arranged on the outer side of the riveting post 1, and the two semi-cylindrical covers 1306 are sleeved on the outer side of the connecting pipe 1301 and are bonded to the riveting post 1 through a metal binder. The specific shape of the semi-cylindrical cover 1306 is as Figure 7 shown. The two semi-cylindrical covers 1306 and the riveting post 1 cooperate to form an annular cavity, so that the connecting pipe 1301 can rotate and move left and right in the annular cavity.

[0050] Please refer to Figure 4 , the riveting post 1, the hollow screw column 9 and the limiting ring 11 are integrally formed. The opening and closing ball 5 and the screw rod 8 are integrally formed. The pressing hemispherical head 12 and the connecting pipe 1301 are integrally formed. Each integrally formed part is machined by milling from the same workpiece. Please refer to Figure 1 , the ends of the pressing hemispherical head 12 and the fastening hemispherical head 14 away from each other are spherical structures, and the ends of the pressing hemispherical head 12 and the fastening hemispherical head 14 close to each other are plane structures. Please refer toFigure 9 , the spherical structure can endow the pressing hemispherical head 12 and the fastening hemispherical head 14 with relatively high strength. Moreover, the spherical structure at the right end of the pressing hemispherical head 12 can better cooperate with the positioning hole of the hinge bracket and also facilitate the operator to pull the pressing hemispherical head 12. The planar structure enables the fastening hemispherical head 14 to better press the pressing hemispherical head 12. Please refer to Figure 8 , six planar grooves are provided at the outer ends of both the pressing hemispherical head 12 and the fastening hemispherical head 14, and the six planar grooves are distributed in a regular hexagon, enabling the pressing hemispherical head 12 and the fastening hemispherical head 14 to be conveniently screwed by the operator using a wrench. Please refer to Figure 3 , the specific numbers of both the connecting groove 3 and the locking bar 4 are four, and the four locking bars 4 are equally spaced on the riveting post 1.

[0051] The processing technology of the special-shaped ball head rivet for the automotive hinge bracket includes the following steps:

[0052] S1: Component forming: Each component is processed and formed by a milling device;

[0053] S2: Installation of the opening and closing ball 5: The screw rod 8 is threadedly connected to the riveting post 1, and the opening and closing ball 5 is inserted into the cylindrical groove 2;

[0054] S3: Installation of the locking bar 4: First, the rotating shaft 701 is passed through the through hole 702, then the wedge block 703 is clamped to both ends of the rotating shaft 701 through the mutual cooperation of the tapered column 704 and the tapered groove 705. After that, the wedge block 703 is clamped into the wedge groove 706 on the riveting post 1, and finally, the wedge block 703 is bonded to the riveting post 1 using a metal adhesive;

[0055] S4: Installation of the pressing hemispherical head 12: First, the moving support ring 1303, the compression spring 1304, and the fixed support ring 1302 are sequentially sleeved outside the connecting pipe 1301, and then the fixed support ring 1302 is bonded to the connecting pipe 1301 using a metal adhesive. Then, the connecting pipe 1301 at the right end of the pressing hemispherical head 12 is sleeved into the annular groove 1305 of the riveting post 1. After that, the two semi-cylindrical covers 1306 are sleeved outside the fixed support ring 1302, the moving support ring 1303, and the compression spring 1304. Subsequently, the two semi-cylindrical covers 1306 are bonded using a metal adhesive, and at the same time, the two semi-cylindrical covers 1306 are bonded to the riveting post 1;

[0056] S5: Installation of the fastening hemispherical head 14 and the screwing block 10: First, the fastening hemispherical head 14 is threadedly connected to the hollow screw 9, and then the square rod 801 on the screw rod 8 is bonded to the square groove on the screwing block 10 using a metal adhesive.

[0057] Please refer to Figures 1 - 9, when the staff needs to weld the hinge bracket and the mounting plate on the vehicle door or body, first pass the rivet post 1 of the rivet through the positioning holes on the hinge bracket and the mounting plate in sequence (the positioning hole on the hinge bracket is larger than the positioning hole on the mounting plate), and make the limiting ring 11 contact with the mounting plate. Then, turn the screw 8 to the right by the turning block 10, driving the opening and closing ball 5 to move to the right. During the process of the opening and closing ball 5 moving to the right, the opening and closing ball 5 and the triangular groove 601 cooperate with each other, causing each locking bar 4 to open and tightly contact the positioning hole of the mounting plate, thereby fixing the rivet post 1 on the mounting plate. At this time, the pressing hemispherical head 12 will move to the right under the action of the compression spring 1304, thereby pressing the hinge bracket against the mounting plate; Subsequently, the staff can position other positions of the hinge bracket in the same way. And during this process, when the staff needs to adjust the position of the hinge bracket, just pull the pressing hemispherical head 12 to the left. After adjustment, release the pressing hemispherical head 12, and the pressing hemispherical head 12 will press against the hinge again under the action of the compression spring 1304. When the staff has initially installed all the rivets and adjusted the position of the hinge bracket, turn the fastening hemispherical head 14 to the right and make the fastening hemispherical head 14 press tightly against the pressing hemispherical head 12, thereby fastening the hinge bracket and making the hinge bracket not easy to loosen. Then, the staff can weld the hinge bracket; After the hinge bracket is welded, the staff can turn the screw 8 to the left by the turning block 10, driving the opening and closing ball 5 to move to the left. The opening and closing ball 5 and the triangular groove 601 cooperate with each other, causing each locking bar 4 to close and fold up, so that the rivet post 1 is no longer fixed on the mounting plate, enabling the staff to recycle the rivets for the next use. This solution enables the staff to position the hinge bracket only with simple common tools (i.e., wrenches), which is flexible to use. And during the positioning process, it is convenient for the staff to adjust the hinge bracket. In addition, after positioning, it can be recycled and reused.

[0058] As described above, it is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. Special-shaped ball head rivet for automobile hinge bracket, including a riveting post (1). It is characterized in that: A cylindrical groove (2) is drilled at the right end of the riveting post (1), and a plurality of communication grooves (3) communicating with the cylindrical groove (2) are drilled at the outer end of the riveting post (1). A locking bar (4) is rotatably connected in the communication groove (3) through a rotary connection mechanism (7), and the outer end of the locking bar (4) extends into the cylindrical groove (2). A folded line groove (6) is provided at one end of the locking bar (4) located in the cylindrical groove (2). An opening and closing ball (5) matching with the locking bar (4) is arranged in the cylindrical groove (2). A screw rod (8) is fixedly connected to the left end of the opening and closing ball (5), and the screw rod (8) penetrates through the riveting post (1) and is threadedly connected with the riveting post (1). A hollow screw post (9) is fixedly connected to the left end of the riveting post (1), and the left end of the screw rod (8) penetrates through the hollow screw post (9) and extends to the left side of the hollow screw post (9). A screwing block (10) is connected to the left end of the hollow screw post (9). A limiting ring (11) is fixedly connected to the outer end of the riveting post (1), and the limiting ring (11) is located on the left side of the locking bar (4). A pressing hemispherical head (12) is sleeved on the hollow screw post (9), and the pressing hemispherical head (12) is connected to the riveting post (1) through an elastic connection mechanism (13). A fastening hemispherical head (14) is threadedly connected to the outer end of the hollow screw post (9), and the fastening hemispherical head (14) is located on the left side of the pressing hemispherical head (12). The rotary connection mechanism (7) includes a rotating shaft (701). A through hole (702) matching with the rotating shaft (701) is drilled at the outer end of the locking bar (4), and the rotating shaft (701) penetrates through the through hole (702). A pair of wedge-shaped blocks (703) symmetrically distributed are arranged on the outer side of the locking bar (4). A conical column (704) is fixedly connected to one end of the wedge-shaped block (703) close to the rotating shaft (701). Conical grooves (705) matching with the conical column (704) are drilled at both ends of the rotating shaft (701), and the conical column (704) extends into the conical groove (705) at its corresponding position. A wedge-shaped groove (706) matching with the wedge-shaped block (703) is drilled at the outer end of the riveting post (1), and the wedge-shaped block (703) extends into the wedge-shaped groove (706) at its corresponding position and is adhesively bonded to the riveting post (1) through a metal binder. The elastic connection mechanism (13) includes a connecting pipe (1301) fixedly connected to the right end of the pressing hemispherical head (12). A fixed support ring (1302) is fixedly connected to the outer end of the connecting pipe (1301). A moving support ring (1303) is sleeved on the connecting pipe (1301) on the left side of the fixed support ring (1302). A compression spring (1304) is sleeved on the connecting pipe (1301) between the moving support ring (1303) and the fixed support ring (1302). An annular groove (1305) is drilled at the left end of the riveting post (1), and the connecting pipe (1301) is sleeved on the annular groove (1305) of the riveting post (1). A pair of semi-cylindrical covers (1306) matching the riveting post (1) are arranged on the outer side of the riveting post (1), and the two semi-cylindrical covers (1306) are sleeved on the outer side of the connecting pipe (1301) and adhered to the riveting post (1) through a metal binder.

2. The special-shaped ball head rivet for an automobile hinge bracket according to claim 1, characterized in that: The folding groove (6) includes a triangular groove (601) and an inclined surface groove (602) that are interconnected, and the triangular groove (601) is located on the right side of the inclined surface groove (602). The opening and closing ball (5) is located in the triangular groove (601).

3. The special-shaped ball head rivet for an automobile hinge bracket according to claim 1, characterized in that: A square rod (801) is fixedly connected to the left end of the screw rod (8). A square groove matching the square rod (801) is drilled at the right end of the screwing block (10), and the square rod (801) extends into the square groove and is adhered to the screwing block (10) through a metal binder.

4. The special-shaped ball head rivet for an automobile hinge bracket according to claim 3, characterized in that: The riveting post (1), the hollow screw post (9) and the limiting ring (11) are integrally formed. The opening and closing ball (5) and the screw rod (8) are integrally formed. The pressing hemispherical head (12) and the connecting pipe (1301) are integrally formed.

5. The special-shaped ball head rivet for an automobile hinge bracket according to claim 1, characterized in that: The ends of the pressing hemispherical head (12) and the fastening hemispherical head (14) away from each other are spherical structures, and the ends of the pressing hemispherical head (12) and the fastening hemispherical head (14) close to each other are flat structures.

6. The special-shaped ball head rivet for an automobile hinge bracket according to claim 5, characterized in that: Six flat grooves are opened on the outer ends of the pressing hemispherical head (12) and the fastening hemispherical head (14), and the six flat grooves are distributed in a regular hexagon.

7. The special-shaped ball head rivet for an automobile hinge bracket according to claim 1, characterized in that: The specific number of the communication grooves (3) and the locking bars (4) is four each, and the four locking bars (4) are equally spaced on the riveting post (1).

8. The processing technology of the special-shaped ball head rivet for an automobile hinge bracket according to any one of claims 1-7, characterized in that: includes the following steps: S1: Component forming: Each component is processed and formed through a milling device; S2: Installation of the opening and closing ball (5): Thread the screw rod (8) onto the riveting post (1), and insert the opening and closing ball (5) into the cylindrical groove (2). S3: Installation of the locking bar (4): First, pass the rotating shaft (701) through the through hole (702). Then, engage the wedge block (703) with the two ends of the rotating shaft (701) through the cooperation of the tapered post (704) and the tapered groove (705). After that, insert the wedge block (703) into the wedge groove (706) on the riveting post (1). Finally, use a metal adhesive to bond the wedge block (703) to the riveting post (1). S4: Installation of the pressing hemispherical head (12): First, successively sleeved the movable support ring (1303), the compression spring (1304), and the fixed support ring (1302) on the outside of the connecting pipe (1301). Then, use a metal adhesive to bond the fixed support ring (1302) to the connecting pipe (1301). Next, insert the connecting pipe (1301) at the right end of the pressing hemispherical head (12) into the annular groove (1305) of the riveting post (1). After that, sleeve the two semi-cylindrical covers (1306) on the outside of the fixed support ring (1302), the movable support ring (1303), and the compression spring (1304). Subsequently, use a metal adhesive to bond the two semi-cylindrical covers (1306), and at the same time bond the two semi-cylindrical covers (1306) to the riveting post (1). S5: Installation of the fastening hemispherical head (14) and the screwing block (10): First, thread the fastening hemispherical head (14) onto the hollow screw (9). Then, use a metal adhesive to bond the square rod (801) on the screw rod (8) to the square groove on the screwing block (10).

Images