Connecting structure and bulb riveting fastener

Abstract

The utility model discloses a connecting structure and a ball head riveting fastener, the ball head riveting fastener comprises a supporting rod, a ball head part and a flange, the ball head part and the flange are respectively arranged at two ends of the supporting rod, the end face of the flange is provided with a riveting unit matching plate, and the riveting unit matching plate is provided with a riveting unit. A ball head hole riveted with the ball head part is formed in the matching plate; and the mounting plate is provided with a mounting hole which can be riveted with the riveting unit to form a fixed part. According to the ball riveting fastener and the connecting structure, a riveting connection mode is adopted, so that the loosening phenomenon caused by vibration or impact is effectively prevented in the using process, and the loosening resistance and the connecting stability of the ball riveting fastener in the connecting structure are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a connection structure and a ball-head riveting fastener. Background Technology

[0002] Ball-head fasteners are special fastening components with a spherical head structure, widely used in scenarios requiring a certain degree of freedom of connection or rotation, such as automotive steering systems, suspension systems, mechanical linkage mechanisms, and robot joint connections. Existing ball-head fasteners typically consist of a threaded rod and a spherical head. The ball head can be embedded in a socket or spherical seat, thereby achieving rotation, oscillation, or linkage transmission within a certain angle range. The threaded rod usually achieves stable installation of the overall structure through a mechanical connection with the sheet metal.

[0003] In typical applications, the sheet metal is machined with through holes or threaded holes. The threaded shank of the ball-head fastener can be directly screwed into the pre-taped internal threaded hole in the sheet metal to achieve a fastening effect. If the sheet metal is thin or lacks the capability for tapping, a nut is often added behind the through hole in the sheet metal for clamping. Although threaded connections offer strong fastening, under continuous vibration, the nut or sheet metal connected to the ball-head fastener is prone to slight movement or loosening, leading to displacement or even detachment of the threaded sheet metal, affecting the reliability and safety of the system. Utility Model Content

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a connection structure and ball head riveting fastener, which adopts a riveting connection method to effectively prevent loosening caused by vibration or impact during use, and significantly improve the anti-loosening performance and connection stability of the ball head riveting fastener in the connection structure.

[0005] Technical solution: This utility model discloses a connection structure, including

[0006] A ball-head riveting fastener, comprising a support rod and ball heads and flanges respectively disposed at both ends of the support rod, wherein the flanges have riveting units on their end faces;

[0007] The mating plate has a ball head hole for riveting to the ball head;

[0008] Mounting plate, the mounting plate having mounting holes for riveting fasteners to be attached to the riveting unit.

[0009] Furthermore, the ball head riveting fastener also includes a base, the base connecting the support rod and the flange, the riveting unit being disposed on the end face of the flange facing the support rod, and the end face of the flange facing the support rod being in contact with the mounting plate.

[0010] Furthermore, the riveting unit is located on the end face of the flange facing away from the support rod. The riveting unit includes a connecting body and helical teeth disposed on the outer wall surface of the connecting body. The ball head riveting fastener is riveted to the mounting plate through the helical teeth.

[0011] Furthermore, the riveting unit is disposed on the end face of the flange opposite to the support rod, the flange is provided with a blind hole extending to the support rod, at least part of the inner wall of the blind hole is provided with internal thread, the ball head riveting fastener is riveted to the mounting plate through the riveting unit, and the mounting hole of the mounting plate is coaxial with the blind hole.

[0012] Furthermore, the ball head riveting fastener connection structure is characterized in that the riveting unit is disposed on the end face of the flange opposite to the support rod, the riveting unit includes several riveting sections arranged in a ring on the flange, a screw extends axially from one end of the flange opposite to the support rod, and an annular groove is provided at the connection between the screw and the flange.

[0013] The ball-head riveting fastener is riveted to the mounting plate via the press-fit section, and the screw passes through the mounting hole;

[0014] The annular groove is used to accommodate the partially deformed mounting plate.

[0015] This utility model discloses a ball head riveting fastener, including a support rod and a ball head and a flange respectively disposed at both ends of the support rod, wherein the end face of the flange has a riveting unit.

[0016] Furthermore, it also includes a base that connects the support rod to the flange.

[0017] Furthermore, the riveting unit is disposed on the end face of the flange facing the support rod.

[0018] Furthermore, the riveting unit is a first riveting tooth disposed on the flange, the first riveting tooth being coaxially disposed with the base, and the outer diameter of the first riveting tooth being larger than the outer diameter of the base.

[0019] Furthermore, the riveting unit includes a boss disposed on the end face of the flange facing away from the support rod and a flange structure extending from the boss.

[0020] Furthermore, the flange has a polygonal cross-section perpendicular to the axial direction.

[0021] Furthermore, a second riveting tooth is circumferentially arranged around the outer surface of the boss.

[0022] Furthermore, the riveting unit is located on the end face of the flange facing away from the support rod, and the riveting unit includes a connecting body and helical teeth disposed on the outer wall surface of the connecting body.

[0023] Furthermore, the riveting unit is disposed on the end face of the flange opposite to the support rod, the flange is provided with a blind hole extending to the support rod, and at least a portion of the inner wall of the blind hole is provided with internal threads.

[0024] Furthermore, the riveting unit is disposed on the end face of the flange opposite to the support rod. The riveting unit includes several riveting sections arranged in a ring on the flange. A screw extends axially from one end of the flange opposite to the support rod, and an annular groove is provided at the connection between the screw and the flange.

[0025] The beneficial effects of this utility model are as follows:

[0026] (1) The ball head riveting fastener of this utility model has a ball head connected to a support rod to form an integral skeleton. A flange is provided at the other end of the support rod, and a riveting unit is provided on the end face of the flange. This allows the ball head riveting fastener to be connected to the mounting plate by riveting during use, thereby preventing the ball head riveting fastener from loosening from the mounting plate under vibration.

[0027] (2) This utility model adopts a riveting method to form a permanent connection structure, which has strong tensile, shear and vibration resistance, and can be applied to high-frequency vibration or high load working scenarios. Attached Figure Description

[0028] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0029] Figure 1 This is a schematic diagram of the connection structure described in this utility model;

[0030] Figure 2 for Figure 1 Exploded view;

[0031] Figure 3 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0032] Figure 4 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0033] Figure 5 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0034] Figure 6 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0035] Figure 7 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0036] Figure 8 A schematic diagram of a connection structure provided for an embodiment of this utility model;

[0037] Figure 9 This is a schematic diagram of the ball head riveting fastener described in this utility model;

[0038] Figure 10 A schematic diagram of a ball-head riveting fastener provided for an embodiment of this utility model;

[0039] Figure 11 A schematic diagram of a ball-head riveting fastener provided for an embodiment of this utility model;

[0040] Figure 12 A schematic diagram of a ball-head riveting fastener provided for an embodiment of this utility model;

[0041] Figure 13 A schematic diagram of a ball-head riveting fastener provided for an embodiment of this utility model;

[0042] Figure 14 A schematic diagram of a ball-head riveting fastener provided for an embodiment of this utility model;

[0043] Figure 15 This is a schematic diagram of a ball-head riveting fastener provided for an embodiment of the present utility model.

[0044] In the diagram: 1. Ball head; 2. Support rod; 3. Flange; 31. Blind hole; 32. Internal thread; 4. Riveting unit; 41. First riveting tooth; 421. Boss; 422. Flanged structure; 423. Second riveting tooth; 431. Connecting body; 432. Helical tooth; 441. Riveting section; 442. Annular groove; 443. Screw; 5. Base; 6. Matching plate; 61. Ball head hole; 7. Mounting plate. Detailed Implementation

[0045] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0046] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0047] like Figure 1 and Figure 2 As shown, this utility model discloses a connection structure, including:

[0048] A ball-head riveting fastener, comprising a support rod 2 and a ball head 1 and a flange 3 respectively disposed at both ends of the support rod 2, wherein the flange 3 has a riveting unit 4 on its end face;

[0049] The mating plate 6 has a ball head hole 61 that is riveted to the ball head 1;

[0050] Mounting plate 7, which has mounting holes for riveting fasteners to the riveting unit 4.

[0051] This utility model achieves a compact structure, a firm connection, and easy assembly through the coordinated cooperation of the ball-head riveting fastener, the mating plate 6, and the mounting plate 7. The ball-head riveting fastener consists of a support rod 2, a ball head 1, and a flange 3 equipped with a riveting unit 4. The ball head 1 is riveted to the ball head hole 61 on the mating plate 6, thus allowing the ball-head riveting fastener to rotate around the ball head 1 at multiple angles. The flange 3 is reliably fixed to the mounting hole of the mounting plate 7 through the riveting unit 4 on its end face, thereby forming a connection structure in which the ball head 1 at one end can rotate at multiple angles, and the riveting unit 4 on the flange 3 at the other end is riveted and fixed to the mounting plate 7.

[0052] Existing ball-head fasteners typically have a threaded shank that connects to the plate, which is then secured with nuts or other fasteners. In applications subject to vibration, the threaded connection between the nut and the ball-head fastener may loosen, leading to an unstable connection. This invention incorporates a riveting unit 4, enabling the ball-head riveting fastener to achieve a direct and reliable press-fit or flip-fit ​​connection with the mounting plate 7, thus improving connection reliability.

[0053] like Figure 3 As shown, in this embodiment, the ball-head riveting fastener also includes a base 5, which is disposed between the support rod 2 and the flange 3, serving as a connection and transition, making the overall structure more stable. The riveting unit 4 is disposed on the end face of the flange 3 facing the support rod 2. When the ball-head riveting fastener is riveted to the mounting plate 7, this end face fits against the mounting plate 7, achieving riveting fixation. The riveting unit 4 can directly act on the mounting plate 7, achieving efficient connection between the ball-head riveting fastener and the mounting plate 7 without affecting the connection between the ball head 1 and the mating plate 6. The base 5 not only enhances the connection strength between the support rod 2 and the flange 3, but also improves the overall structural resistance to deformation, preventing fatigue damage caused by concentrated loads during use.

[0054] like Figure 6 As shown, in this embodiment, the riveting unit 4 is located on the end face of the flange 3 facing away from the support rod 2, i.e., the end away from the support rod 2. The riveting unit 4 includes a connecting body 431 and a helical tooth 432 structure arranged on the outer wall of the connecting body 431. During the riveting process, the helical tooth 432 can be embedded into the mounting hole of the mounting plate 7 under the action of pressing force or rotational force to achieve a mechanical interlocking interference fit. In a feasible embodiment, the riveting unit 4 can be embedded into the injection molded part under the action of pressing force. The structure of the helical tooth 432 can enhance the fixing strength between the riveting unit 4 and the mounting plate 7, and can also effectively prevent rotational loosening or axial displacement. Compared with traditional straight tooth riveting, the helical tooth 432 has stronger pull-out resistance and vibration resistance.

[0055] like Figure 7 As shown, in this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 opposite to the support rod 2, and this end face is attached to the mounting plate 7 to form a riveting connection. Furthermore, the flange 3 also has a blind hole 31 extending from its end face toward the support rod 2, and at least a portion of the inner wall of the blind hole 31 is provided with an internal thread 32. With the above structure, the ball-head riveting fastener, in addition to riveting and fixing the mounting plate 7, also has a locking function of the internal thread 32, providing a threaded interface for installing additional connecting fasteners. The blind hole 31 is coaxially arranged with the mounting hole on the mounting plate 7, facilitating alignment and assembly, ensuring good axial consistency between the fastener, the blind hole 31, and the mounting hole. After the ball-head riveting fastener is riveted to the mounting plate 7, if additional sheet metal needs to be installed, the sheet metal to be installed can be stacked on top of it. After the through hole of the mounting plate 7 is aligned with the blind hole 31, the fastener is screwed into the blind hole 31 and threadedly connected to the blind hole 31.

[0056] like Figure 8As shown, in this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 opposite to the support rod 2, that is, on the side of the flange 3 facing the mounting plate 7. The riveting unit 4 consists of several riveting sections 441 arranged circumferentially on the flange 3. The riveting sections 441 are evenly distributed circumferentially on the flange 3, which helps to distribute the force evenly during the riveting process and improves the reliability and shear resistance of the riveting.

[0057] Furthermore, a screw 443 extends axially from the end of the flange 3 away from the support rod 2. The screw 443 can pass through the mounting hole of the mounting plate 7, and an annular groove 442 is provided at its connection with the flange 3. The annular groove 442 is used to accommodate the portion of the plate material that is deformed due to riveting with the riveting unit 4. The flowing plate material enters the annular groove 442, and at the same time, it can also form a limiting structure to prevent the mounting plate 7 from loosening.

[0058] Meanwhile, screw 443 also provides additional positioning functionality, enabling the connection structure to be further connected or locked to additional sheet metal on top of riveting and fixing mounting plate 7. Several sheet metals can be connected via threaded screw 443, or by using nuts to connect several sheet metals.

[0059] like Figure 9 As shown, this utility model discloses a ball head riveting fastener, including a support rod 2 and a ball head 1 and a flange 3 respectively disposed at both ends of the support rod 2, wherein the flange 3 has a riveting unit 4 on its end face.

[0060] With the above structure, the ball head 1 can achieve multi-angle connection or rotation, improving the assembly flexibility of the ball head riveting fastener in complex spaces. The riveting unit 4, set on the end face of the flange 3, is used for riveting with other components, ensuring good anti-loosening ability and structural stability during use. The ball head riveting fastener has good seismic performance, optimizing the problem of easy loosening of traditional ball head fastener threaded connections. The end of this utility model away from the ball head 1 is fixedly connected to the mounting plate 7 by riveting, and the ball head 1 can achieve multi-angle rotation, with a high degree of freedom of movement, thereby expanding the application range of the ball head riveting fastener.

[0061] like Figure 10 As shown, preferably, the ball-head riveting fastener also includes a base 5, which connects the support rod 2 and the flange 3, thereby strengthening support and providing a transition. The base 5, positioned between the support rod 2 and the flange 3, makes the overall structure more stable and effectively distributes the stress borne by the connection between the support rod 2 and the flange 3. The base 5 can be customized in size or shape according to specific installation requirements to improve the compatibility between the ball-head riveting fastener and the connected components.

[0062] In this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 facing the support rod 2. Specifically, the riveting unit 4 is a first rivet tooth 41 disposed on the flange 3, coaxially arranged with the base 5, thereby enhancing the structural stability of the fastener. The outer diameter of the first rivet tooth 41 is larger than the outer diameter of the base 5, allowing the first rivet tooth 41 to have a larger contact surface and stronger biting force during riveting, improving the firmness and pull-out resistance of the riveting, and ensuring that the riveting unit 4 and the plate to be connected are not easily loosened under long-term load and vibration.

[0063] In this embodiment, the riveting unit 4 includes a boss 421 on the end face of the flange 3 facing away from the support rod 2 and a flange structure 422 extending from the boss 421. During the connection process, the riveting unit 4 can be riveted and fixed to the mounting hole on the mounting plate 7 via the flange structure 422, thereby giving the ball head riveting fastener a stronger mechanical locking effect. Specifically, the boss 421 provides an effective positioning reference, facilitating a stable riveting fit with the mounting plate 7, while the flange structure 422 can be radially outwardly flanged during the riveting process and engaged with the edge of the mounting hole for fixation, thus achieving a reliable riveting effect and further improving the tensile and shear strength of the riveting structure.

[0064] Furthermore, such as Figure 11 and Figure 4 As shown, the cross section of the flange 3 perpendicular to the axial direction can be polygonal. Correspondingly, the mounting plate 7 also has a limiting hole for accommodating the polygonal flange 3, so that the ball head riveting fastener has a stronger anti-rotation capability when in contact with the mounting plate 7, effectively preventing relative rotation caused by force or vibration during riveting, and strengthening the anti-torsion performance of the ball head riveting fastener during installation.

[0065] like Figure 12 and Figure 5 As shown, preferably, when the flange 3 is a conventional circular shape, a second rivet tooth 423 can be circumferentially provided on the outer surface of the boss 421, thereby further enhancing the riveting strength and anti-rotation capability of the ball-head riveting fastener and the mounting plate 7. The second rivet tooth 423 is arranged around the outer surface of the boss 421, so during the riveting process, the second rivet tooth 423 can form multi-point engagement with the inner wall of the mounting hole, effectively increasing friction and biting force, thereby achieving a more secure mechanical locking. Compared to the smooth outer wall surface of the boss 421, the presence of the second rivet tooth 423 can significantly improve pull-out resistance and anti-rotation stability, preventing the ball-head riveting fastener from loosening or shifting under long-term load, impact, or vibration.

[0066] like Figure 13As shown, in this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 facing away from the support rod 2. The riveting unit 4 specifically includes a connecting body 431 and helical teeth 432 disposed on the outer wall of the connecting body 431. The helical teeth 432 are arranged circumferentially around the connecting body 431, forming a self-locking meshing structure. The riveting unit 4 with the helical teeth 432 can be used for injection molding riveting. During the riveting process, the helical teeth 432 can be embedded into the inner wall of the mounting hole of the mounting plate 7, forming greater friction and stronger pull-out resistance through oblique engagement. Compared to the traditional vertical press riveting structure, the helical tooth 432 design not only enhances the connection stability radially but also has a certain self-tightening effect, becoming even tighter when subjected to external force or vibration, thereby improving the anti-loosening performance of the ball-head riveting fastener.

[0067] like Figure 14 As shown, in this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 opposite to the support rod 2. Simultaneously, the flange 3 is provided with a blind hole 31 extending from its end face towards the support rod 2. At least a portion of the inner wall of the blind hole 31 is provided with an internal thread 32, thus enabling the ball-head riveting fastener to have the function of threaded connection with external fasteners. Through the above structure, the internal thread 32 and the riveting unit 4 work together to achieve a dual fixing form of riveting and threaded connection. The riveting unit 4 in this embodiment can be an existing structure used for press riveting or flip riveting, and is not limited here. In addition to the riveting unit 4 and the mounting plate 7, multiple plates that need to be fixed can be stacked according to actual needs. Through holes on the plates and the blind hole 31 are used for external bolts or other threaded fasteners to extend into and connect the two through the threads, thereby fixing the plates to be connected.

[0068] like Figure 15 As shown, in this embodiment, the riveting unit 4 is disposed on the end face of the flange 3 opposite to the support rod 2, and is composed of several riveting segments 441 evenly arranged circumferentially. This allows for multi-point stress and uniform deformation during riveting, providing stronger riveting stability and shear resistance. The structure of the riveting unit 4 not only improves the engagement of the connection parts but also effectively reduces the risk of fatigue failure caused by localized concentrated stress. In addition, a screw 443 extends axially from the end of the flange 3 opposite to the support rod 2, which can be used with nuts and other connecting parts to fix the plates to be connected. Furthermore, an annular groove 442 is provided at the connection between the screw 443 and the flange 3. The annular groove 442 can be used to accommodate the mounting plate 7 that deforms and flows after being riveted by the riveting unit 4. At the same time, since the annular groove 442 can accommodate the deformed mounting plate 7, it can also serve as part of the anti-loosening structure, further improving the safety and reliability of the assembly.

[0069] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A connection structure, characterized in that, include A ball-head riveting fastener, comprising a support rod and ball heads and flanges respectively disposed at both ends of the support rod, wherein the flanges have riveting units on their end faces; The mating plate has a ball head hole for riveting to the ball head; Mounting plate, the mounting plate having mounting holes for riveting fasteners to be attached to the riveting unit.

2. The connection structure according to claim 1, characterized in that, The ball head riveting fastener also includes a base, which connects the support rod and the flange. The riveting unit is disposed on the end face of the flange facing the support rod, and the end face of the flange facing the support rod is in contact with the mounting plate.

3. The connection structure according to claim 1, characterized in that, The riveting unit is located on the end face of the flange facing away from the support rod. The riveting unit includes a connecting body and helical teeth disposed on the outer wall surface of the connecting body. The ball head riveting fastener is riveted to the mounting plate through the helical teeth.

4. The connection structure according to claim 1, characterized in that, The riveting unit is disposed on the end face of the flange opposite to the support rod. The flange is provided with a blind hole extending to the support rod. At least part of the inner wall of the blind hole is provided with internal threads. The ball head riveting fastener is riveted to the mounting plate through the riveting unit. The mounting hole of the mounting plate is coaxial with the blind hole.

5. The connection structure according to claim 1, characterized in that, The riveting unit is disposed on the end face of the flange opposite to the support rod. The riveting unit includes several riveting sections arranged in a ring on the flange. A screw extends axially from one end of the flange opposite to the support rod. An annular groove is provided at the connection between the screw and the flange. The ball-head riveting fastener is riveted to the mounting plate via the press-fit section, and the screw passes through the mounting hole; The annular groove is used to accommodate the partially deformed mounting plate.

6. A ball-head riveting fastener, characterized in that, It includes a support rod and ball heads and flanges respectively disposed at both ends of the support rod, wherein the end face of the flange has a riveting unit.

7. The ball-head riveting fastener according to claim 6, characterized in that, It also includes a base that connects the support rod to the flange.

8. The ball-head riveting fastener according to claim 7, characterized in that, The riveting unit is disposed on the end face of the flange facing the support rod.

9. The ball-head riveting fastener according to claim 8, characterized in that, The riveting unit is a first riveting tooth disposed on the flange. The first riveting tooth is coaxially disposed with the base, and the outer diameter of the first riveting tooth is larger than the outer diameter of the base.

10. The ball-head riveting fastener according to claim 7, characterized in that, The riveting unit includes a boss on the end face of the flange facing away from the support rod and a flange structure extending from the boss.

11. The ball-head riveting fastener according to claim 10, characterized in that, The flange has a polygonal cross-section perpendicular to the axial direction.

12. The ball-head riveting fastener according to claim 10, characterized in that, The outer surface of the boss is circumferentially surrounded by a second riveting tooth.

13. The ball-head riveting fastener according to claim 6, characterized in that, The riveting unit is located on the end face of the flange facing away from the support rod. The riveting unit includes a connecting body and helical teeth disposed on the outer wall surface of the connecting body.

14. The ball-head riveting fastener according to claim 6, characterized in that, The riveting unit is disposed on the end face of the flange opposite to the support rod. The flange is provided with a blind hole extending to the support rod, and at least part of the inner wall of the blind hole is provided with internal threads.

15. The ball-head riveting fastener according to claim 6, characterized in that, The riveting unit is disposed on the end face of the flange opposite to the support rod. The riveting unit includes several riveting sections arranged in a ring on the flange. A screw extends axially from one end of the flange opposite to the support rod. An annular groove is provided at the connection between the screw and the flange.

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