Sealing rivet-pulling nut, sealing rivet-pulling mechanism and device connected with sealing rivet-pulling mechanism

Abstract

The utility model provides a sealing rivet-pulling nut, a sealing rivet-pulling mechanism and a sealing rivet-pulling mechanism connection rear device. The flange part sleeves one end of the rod part and is fixedly connected with the rod part; the extension hole extends inwards from one end of the rod part in the length direction and comprises a first hole section, a second hole section and a third hole section which are coaxially arranged, the hole diameters of the first hole section, the second hole section and the third hole section are sequentially reduced, and the first hole section is closer to the flange part than the third hole section; a deformable area of the rod portion is formed around the wall portion of the second hole section and part of the first hole section, and materials of the deformable area can flow in the radial direction in the rivet pulling process to form a protruding portion. In the riveting process, the wall part surrounding the first hole section deforms firstly and then deforms after surrounding the wall part surrounding the second hole section, and the deformation position is relatively fixed, so that edge warping cannot be generated in the process that materials in the deformable area flow in the radial direction to gradually form the protruding part, the deformation process is stable, and then the riveting performance of a product is improved; and the requirement for riveting larger-span plate thickness can be met, and the application range is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to a sealed rivet nut, a sealed rivet mechanism and a post-connection device of the sealed rivet mechanism. Background Art

[0002] In order to ensure the sealing reliability of the multi-layer plate connection on the battery box chassis of new energy vehicles, rivet nuts are used for installation in the existing technology. However, because the multi-layer plate is thick and the plate (usually aluminum plate) is weak, the inner hole of the plate does not have sufficient strength. When the installation gun is used to apply force to the rivet nut, the inner hole of the plate may also be deformed, resulting in reduced product performance and increased production defect rate. In response to this problem, industry insiders have made improvements to the rivet nut: Figure 1 As shown, in the double-step sealed rivet nut, double-step sealed rivet mechanism, and double-step sealed rivet mechanism connected device disclosed in the patent application with application number CN202111369213.8, by providing a second step portion 17 abutting against the flange portion 12, the force of the rivet nut during the installation process can be concentrated on the rod portion 11, thereby improving the clamping force after installation; by providing a first step portion 16 below the flange portion 12, the strength of the lower end of the second step portion 17 can be improved to avoid deformation after installation. The provision of two step portions prevents the inner hole of the plate from deforming during the installation process, thereby improving the performance and production yield of the product. However, since the internal upper large hole 5 of the rivet nut is still a straight inner hole structure, the part of the hole wall connecting the large hole and the lower small hole 6 is the rivet deformation area, so the wall thickness of the deformation area is consistent. When riveting thin plates, the deformation area is relatively high and the deformation position is not fixed. Therefore, it will cause irregular deformation of the deformation area during the riveting process, forming warping, and thus the riveting performance of the product fails. Therefore, under this structure, although the deformation of the inner hole of the plate can be avoided, the thickness range of the installed riveted plate is relatively small, usually only 2.0mm at most, which cannot meet the demand for a larger plate thickness span. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the main purpose of the utility model is to provide a sealed rivet nut, a sealed rivet mechanism and a sealed rivet mechanism post-connection device, which are used to solve at least one of the above-mentioned problems.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides a sealed rivet nut, comprising:

[0006] Rod;

[0007] A flange portion sleeved on one end of the rod portion and fixedly connected thereto;

[0008] An extension hole extends inward from one end of the rod portion along the length direction, the extension hole includes a first hole segment, a second hole segment and a third hole segment which are coaxially arranged and have successively decreasing hole diameters, the first hole segment is closer to the flange portion than the third hole segment; a wall portion surrounding the second hole segment and a portion of the first hole segment forms a deformable zone of the rod portion, and the material of the deformable zone can flow radially during the riveting process to form a protrusion.

[0009] As a further description of the above technical solution, the shape of the rod is full hexagonal, semi-hexagonal or circular.

[0010] As a further description of the above technical solution, a thread is formed on the inner wall of the third hole segment.

[0011] As a further description of the above technical solution, it also includes a first step portion, which is sleeved on the rod portion and is located on a side of the flange portion adjacent to the rod portion, and the first step portion is fixedly connected to the rod portion;

[0012] The first step portion abuts against the end surface of the flange portion; and the outer diameter of the first step portion is smaller than the outer diameter of the flange portion.

[0013] As a further description of the above technical solution, a deformable zone of the rod is formed between an end of the rod away from the flange portion and an end surface of the first step portion away from the flange portion along the length direction and surrounding the wall portion of the first hole segment and the second hole segment. The material of the deformable zone can flow radially during the riveting process to form a protrusion.

[0014] As a further description of the above technical solution, it also includes a second step portion, which is sleeved on the rod portion and fixedly connected thereto; the second step portion is located on the side of the flange portion away from the first step portion, and the second step portion abuts against the end face of the flange portion.

[0015] As a further description of the above technical solution, the outer diameter of the second step portion is smaller than the outer diameter of the flange portion and larger than the outer diameter of the first step portion.

[0016] The utility model also provides a sealing riveting mechanism, comprising:

[0017] A first plate, wherein a first hole is provided on the first plate;

[0018] A second plate, wherein the second plate is provided with a second hole;

[0019] A nut, the nut being used to connect the first plate and the second plate, comprising:

[0020] Rod;

[0021] A flange portion sleeved on one end of the rod portion and fixedly connected thereto;

[0022] An extension hole extending inward from the first end of the rod portion along the length direction, the extension hole comprising a first hole segment, a second hole segment and a third hole segment which are coaxially arranged and have successively decreasing hole diameters, the first hole segment being closer to the flange portion than the third hole segment; a hole wall surrounding the second hole segment and a portion of the first hole segment forms a deformable zone of the rod portion, and the material of the deformable zone can flow radially during the riveting process to form a convex portion; wherein,

[0023] The outer diameter of the flange portion is larger than the outer diameters of the first hole and the second hole, the inner diameter of the first hole is not smaller than the inner diameter of the second hole, and the rod portion and the second hole are loosely matched;

[0024] The inner wall of the third hole section of the nut is formed with threads that can be combined with threads on the mounting gun, so that the material in the deformable zone can flow radially to form a protrusion and abut against the bottom of the second plate, thereby combining the rod with the second hole, thereby connecting the first plate and the second plate.

[0025] As a further description of the above technical solution, it also includes a first step portion, which is sleeved on the rod portion and is located on a side of the flange portion adjacent to the rod portion, and the first step portion is fixedly connected to the rod portion; the first step portion abuts against an end surface of the flange portion; and the outer diameter of the first step portion is smaller than the outer diameter of the flange portion;

[0026] The first step portion is in clearance fit with the first hole, and during the process of the rod portion being combined with the second hole, the first step portion is combined with the first hole synchronously;

[0027] In the length direction of the rod, the height of the first step portion is not greater than the height of the first hole.

[0028] The utility model also provides a device after connection with a sealing rivet mechanism, which is connected through the sealing rivet mechanism as described above, wherein the end face of the flange portion facing the rod portion abuts against the end face of the first plate facing away from the second plate, the side wall of the second hole is tightly connected to the rod portion, the end face of the first plate facing the second plate is connected to the end face of the second plate facing the first plate, and the raised portion is connected to the end face of the second plate facing away from the first plate.

[0029] By means of the above technical solution, the outstanding effects of the utility model are:

[0030] The sealed rivet nut of the present application comprises a rod, a flange portion sleeved on one end of the rod and fixedly connected thereto, and an extension hole extending inward from one end of the rod along the length direction, wherein the extension hole comprises a first hole segment, a second hole segment and a third hole segment which are coaxially arranged and have successively decreasing hole diameters, and the first hole segment is closer to the flange portion than the third hole segment, and a wall portion surrounding the second hole segment and a part of the first hole segment forms a deformable zone of the rod, and the material of the deformable zone can flow radially during the riveting process to form a convex portion to form a sealed riveting mechanism with the plate; wherein, Since the aperture of the first hole segment is larger than that of the second hole segment and the wall thicknesses of the two hole segments are different, during the riveting process, the wall portion corresponding to the first hole segment in the deformable zone deforms first, and the wall portion corresponding to the second hole segment deforms later. The deformation area is relatively fixed, so that the material in the deformable zone flows radially and gradually forms a raised portion without warping. The deformation process is stable, thereby improving the riveting performance of the product, meeting the needs of riveting a larger span of plate thickness (up to a maximum riveted plate thickness of 4.0 mm), and having a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A half-section diagram of a cold-headed part of a sealed rivet nut in the prior art;

[0032] Figure 2 A half-section view of a cold heading piece of a sealed rivet nut in an embodiment of the utility model;

[0033] Figure 3 It is a cross-sectional view of the sealed rivet nut mechanism in the embodiment of the utility model.

[0034] Description of Figure Numbers:

[0035] 11. Rod; 12. Flange; 13. Extension hole; 131. First hole section; 132. Second hole section; 133. Third hole section; 14. Deformable area; 15. Thread; 16. First step section; 17. Second step section; 2. Raised portion; 3. First plate; 31. First hole; 4. Second plate; 41. Second hole; 5. Large hole in the upper section; 6. Small hole in the lower section. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0038] See also Figures 2 to 3 The utility model discloses a sealed rivet nut, a sealed rivet mechanism and a sealed rivet mechanism connection device, wherein the sealed rivet nut comprises a rod portion 11, a flange portion 12 sleeved on one end of the rod portion 11 and fixedly connected thereto, and an extension hole 13 extending inwardly from one end of the rod portion 11 along the length direction, wherein the extension hole 13 comprises a first hole segment 131, a second hole segment 132 and a third hole segment 133 which are coaxially arranged and have successively decreasing apertures, and the first hole segment 131 is closer to the flange portion 12 than the third hole segment 133, and a wall portion surrounding the second hole segment 132 and a part of the first hole segment 131 forms a deformable zone 14 of the rod portion 11, and the material of the deformable zone 14 During the riveting process, radial flow can occur to form a raised portion 2 to form a sealed riveting mechanism with the plate; wherein, since the aperture of the first hole segment 131 is larger than the aperture of the second hole segment 132, the wall thicknesses of the two hole segments are different. Therefore, during the riveting process, the wall portion corresponding to the first hole segment 131 in the deformable area 14 is deformed first, and the wall portion corresponding to the second hole segment 132 is deformed later, and the deformation position is relatively fixed, so that the material of the deformable area 14 flows radially and gradually forms the raised portion 2 without warping, and the deformation process is stable, thereby improving the riveting performance of the product, which can meet the needs of riveting a larger span of plate thickness (up to a maximum riveted plate thickness of 4.0 mm), and has a wider range of applications.

[0039] The following is combined with Figure 2-3 And embodiments describe the utility model in detail.

[0040] The sealed rivet nut disclosed in the present application comprises:

[0041] Rod 11;

[0042] A flange portion 12 is sleeved on one end of the rod portion 11 and fixedly connected thereto;

[0043] An extension hole 13 extends inward from one end of the rod portion 11 along the length direction, and the extension hole 13 includes a first hole segment 131, a second hole segment 132 and a third hole segment 133 which are coaxially arranged and have successively decreasing hole diameters, and the first hole segment 131 is closer to the flange portion 12 than the third hole segment 133; the wall portion surrounding the second hole segment 132 and part of the first hole segment 131 forms a deformable zone 14 of the rod portion 11, and the material of the deformable zone 14 can flow radially during the riveting process to form a protrusion 2.

[0044] See also Figure 2 Specifically, in this embodiment, the shape of the rod 11 included in the sealing rivet nut is a full hexagon, and the full hexagon means that the cross-section of the rod 11 is all hexagonal. Of course, in other embodiments, the shape of the rod 11 may also be a semi-hexagon or a circle. Semi-hexagon means that the cross-section of a section of the rod 11 adjacent to the flange 12 is hexagonal, and the rest is a circle with a smaller cross-sectional area, so that when the rod 11 is subsequently fixed to the plate, the circular cross-sectional portion of the rod 11 can be first fixed at one end of the rod 11 away from the flange 12 and the middle position of the hexagonal cross-section, so that there is a preliminary fixing effect on the hole, thereby improving the fixing effect of the plate. The flange 12 is sleeved on one end of the rod 11 and fixedly connected to the rod 11, and its cross-section along the radial direction is circular.

[0045] See also Figure 2 Specifically, in this embodiment, the sealing rivet nut includes an extension hole 13 extending inward from the first end of the rod portion 11 along the length direction, and the extension hole 13 includes a first hole segment 131, a second hole segment 132 and a third hole segment 133 which are coaxially arranged and have successively decreasing hole diameters, and the first hole segment 131 is closer to the flange portion 12 than the third hole segment 133; Figure 3 As shown, the wall of the second hole section 132 and part of the first hole section 131 forms the deformable area 14 of the rod 11. The material of the deformable area 14 can flow radially during the riveting process to form the protrusion 2. Since the aperture of the first hole section 131 is larger than that of the second hole section 132, the wall thicknesses of the two hole sections are different. Therefore, during the riveting process, the wall corresponding to the first hole section 131 in the deformable area 14 is deformed first, and the wall corresponding to the second hole section 132 is deformed later. The deformation position is relatively fixed, so that the material of the deformable area 14 flows radially and gradually forms the protrusion 2 without warping. The deformation process is stable, thereby improving the riveting performance of the product, meeting the requirements of riveting a larger span of plate thickness (up to a maximum riveted plate thickness of 4.0 mm), and having a wider range of applications. The inner wall of the third hole section 133 is formed with a thread 15 to correspond to the assembly of the corresponding bolt member.

[0046] Specifically, in this embodiment, the sealing rivet nut further includes a first step portion 16, which is sleeved on the rod portion 11 and located on the side of the flange portion adjacent to the rod portion 11, and abuts against the end face of the flange portion 12, and the outer diameter of the first step portion 16 is smaller than the outer diameter of the flange portion 12 and larger than the outer diameter of the rod portion 11. The radial cross-section of the first step portion 16 is hexagonal, so as to facilitate the transition with the hexagonal cross-section of the rod portion 11 to save space. Of course, in other embodiments, the radial cross-section of the first step portion 16 may also be circular. The connection between the flange portion 12 and the first step portion 16 adopts a rounded transition. Of course, in other embodiments, the connection between the flange portion 12 and the first step portion 16 may also adopt a non-rounded transition.

[0047] Specifically, in this embodiment, the deformable zone 14 of the rod portion 11 is formed by a wall portion located between an end of the rod portion 11 away from the flange portion 12 and an end surface of the first step portion 16 away from the flange portion 12 along the length direction and surrounding the first hole segment 131 and the second hole segment 132. The material of the deformable zone 14 can flow radially during the riveting process to form the protrusion 2.

[0048] Specifically, in this embodiment, the sealing rivet nut further includes a second step portion 17, which is sleeved on the rod portion 11 and fixedly connected thereto, and is located on the side of the flange portion 12 away from the first step portion 16, and its radial cross-section is circular to be consistent with the shape of the gun head of the installation gun, so that the installation gun is inserted into the sealing rivet nut to apply force thereto so that the material of the deformable area 14 flows radially outward and deforms into the convex portion 2. The second step portion 17 abuts against the end surface of the flange portion 12. The outer diameter of the second step portion 17 is smaller than the outer diameter of the flange portion 12 and larger than the outer diameter of the first step portion 16.

[0049] See also Figure 3Specifically, the present application also discloses a sealed rivet mechanism, comprising a first plate 3, a second plate 4 and a nut for connecting the first plate 3 and the second plate 4. The first plate 3 is provided with a first hole 31, the second plate 4 is provided with a second hole 41, and the apertures of the first hole 31 and the second hole 41 may be different. The nut comprises: a rod 11, and the shape of the rod 11 may be full hexagonal, semi-hexagonal or circular. One end of the rod 11 is sleeved with a flange 12 fixedly connected thereto, and the radial cross-section of the flange 12 is circular. The rod portion 11 extends inward from one end thereof along the length direction to form an extension hole 13, and the extension hole 13 includes a first hole section 131, a second hole section 132 and a third hole section 133 which are coaxially arranged and have decreasing hole diameters in sequence, the first hole section 131 is closer to the flange portion 12 than the third hole section 133, and the wall portion surrounding the second hole section 132 and part of the first hole section 131 forms a deformable zone 14 of the rod portion 11, and the material of the deformable zone 14 can flow radially during the riveting process to form a protrusion 2; wherein, the outer diameter of the flange portion 12 is larger than the outer diameters of the first hole 31 and the second hole 41, and the inner diameter of the first hole 31 is not smaller than the inner diameter of the second hole 41, and the rod portion 11 can be loosely matched with the second hole 41, so that the first step portion 16 can fix the first plate 3, and the rod portion 11 can fix the second plate 4.

[0050] The inner wall of the third hole section 133 of the nut is formed with a thread 15 which can be combined with the thread 15 on the mounting gun, so that the material of the deformable zone 14 can flow radially to form a protrusion 2 and abut against the bottom of the second plate 4, thereby combining the rod 11 with the second hole 41, thereby connecting the first plate 3 and the second plate 4.

[0051] Specifically, in the sealing riveting mechanism, the rod 11 is also provided with a first step portion 16 fixedly connected thereto, which is located on the side of the flange 12 adjacent to the rod 11 and abuts against the end face of the flange 12, and the radial cross section of the first step portion 16 can be hexagonal or circular. The outer diameter of the first step portion 16 is smaller than the outer diameter of the flange 12. More specifically, the first step portion 16 is clearance-matched with the first hole 31, and the thread 15 formed on the inner wall of the third hole section 133 of the nut is combined with the thread 15 on the mounting gun, so that the material of the deformable zone 14 can flow radially to form a protrusion 2 and abut against the bottom of the second plate 4, so that in the process of combining the rod 11 with the second hole 41, the first step portion 16 is also synchronously combined with the first hole 31.

[0052] Specifically, in this embodiment, by setting a first step portion 16 with an outer diameter larger than the outer diameter of the rod portion 11 on the outside of the rod portion 11, the first plate 3 is fixed on the first step portion 16 and the second plate 4 is fixed on the rod portion 11 through the clearance between the first step portion 16 and the first hole 31 and the rod portion 11 and the second hole 41, so that the first plate 3 and the second plate 4 can be relatively still with the rod portion 11, so that the first step portion 16 and the rod portion 11 can play a role in fixing and limiting the plates. In addition, the strength of the flange portion 12 near the end of the rod portion 11 can also be improved to avoid deformation after installation; furthermore, the holes corresponding to the two plates can be prevented from being deformed during the installation process, thereby improving the performance of the product and the production quality rate. Preferably, in the length direction of the rod 11, the height of the first step portion 16 is not greater than the height of the first hole 31, so that after the material of the deformable zone 14 is deformed in the radial direction to form the protrusion 2, the second plate 4 is connected to the first plate 3 under the extrusion of the protrusion 2, and thus the first step portion 16 can be prevented from affecting the second plate 4 during the process of fastening the first hole 31 and the first step portion 16 together, thereby ensuring that the first plate 3 and the second plate 4 can be completely fitted after riveting, thereby improving the sealing performance.

[0053] Specifically, in this embodiment, the nut further includes a second step portion 17, which is sleeved on the rod portion 11 and fixedly connected thereto, and the second step portion 17 is circular in cross section toward the radial direction to be consistent with the shape of the gun head of the installation gun, so that the installation gun can be inserted into the sealing rivet nut to apply force thereto so that the material of the deformable area 14 flows radially outward and deforms into the convex portion 2. The second step portion 17 abuts against the end surface of the flange portion 12. The outer diameter of the second step portion 17 is smaller than the outer diameter of the flange portion 12 and larger than the outer diameter of the first step portion 16.

[0054] The present application also discloses a sealing riveting mechanism connected device, through the sealing riveting mechanism connection as described above, the end surface of the flange portion 12 facing the rod portion 11 abuts against the end surface of the first plate 3 facing away from the second plate 4, the side wall of the second hole 41 is tightly connected to the rod portion 11, the end surface of the first plate 3 facing the second plate 4 is connected to the end surface of the second plate 4 facing the first plate 3, and the protrusion 2 is connected to the end surface of the second plate 4 facing away from the first plate 3. Further, in the case where the above-mentioned first step portion 16 is sleeved on the rod portion 11, the side wall of the first hole 31 is tightly connected to the first step portion 16.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealed rivet nut, characterized in that: include: Rod; A flange portion sleeved on one end of the rod portion and fixedly connected thereto; an extension hole extending inwardly from one end of the rod portion along the length direction, the extension hole comprising a first hole segment, a second hole segment and a third hole segment which are coaxially arranged and have successively decreasing hole diameters, the first hole segment being closer to the flange portion than the third hole segment; The wall surrounding the second hole section and part of the first hole section forms a deformable area of ​​the shank, and the material of the deformable area can flow in the radial direction during the riveting process to form a protrusion.

2. The sealed rivet nut according to claim 1, characterized in that: The shape of the rod is full hexagonal, semi-hexagonal or circular.

3. The sealed rivet nut according to claim 1, characterized in that: A thread is formed on the inner wall of the third hole segment.

4. The sealed rivet nut according to claim 1, characterized in that: It also includes a first step portion, which is sleeved on the rod portion and located on a side of the flange portion adjacent to the rod portion, and the first step portion is fixedly connected to the rod portion; The first step portion abuts against the end surface of the flange portion; and the outer diameter of the first step portion is smaller than the outer diameter of the flange portion.

5. The sealed rivet nut according to claim 4, characterized in that: A deformable zone of the rod is formed between an end of the rod away from the flange portion and an end surface of the first step portion away from the flange portion along the length direction and surrounding the first hole segment and the second hole segment. The material of the deformable zone can flow radially during the riveting process to form a protrusion.

6. The sealed rivet nut according to claim 5, characterized in that: It also includes a second step portion, which is sleeved on the rod portion and fixedly connected thereto; the second step portion is located on a side of the flange portion away from the first step portion, and the second step portion abuts against an end surface of the flange portion.

7. The sealed rivet nut according to claim 6, characterized in that: An outer diameter of the second step portion is smaller than an outer diameter of the flange portion and larger than an outer diameter of the first step portion.

8. A sealed riveting mechanism, characterized in that: include: A first plate, wherein a first hole is provided on the first plate; A second plate, wherein the second plate is provided with a second hole; A nut, the nut being used to connect the first plate and the second plate, comprising: Rod; A flange portion sleeved on one end of the rod portion and fixedly connected thereto; An extension hole extending inward from one end of the rod portion along the length direction, the extension hole comprising a first hole segment, a second hole segment and a third hole segment which are coaxially arranged and have successively decreasing hole diameters, the first hole segment being closer to the flange portion than the third hole segment; a wall portion surrounding the second hole segment and a portion of the first hole segment forms a deformable zone of the rod portion, and the material of the deformable zone can flow radially during the riveting process to form a convex portion; wherein, The outer diameter of the flange portion is larger than the outer diameters of the first hole and the second hole, the inner diameter of the first hole is not smaller than the inner diameter of the second hole, and the rod portion and the second hole are loosely matched; The inner wall of the third hole section of the nut is formed with threads that can be combined with threads on the mounting gun, so that the material in the deformable zone can flow radially to form a protrusion and abut against the bottom of the second plate, thereby combining the rod with the second hole, thereby connecting the first plate and the second plate.

9. The sealing rivet mechanism according to claim 8, characterized in that: The rod portion is sleeved with a first step portion, the first step portion is located on a side of the flange portion adjacent to the rod portion, and the first step portion is fixedly connected to the rod portion; the first step portion abuts against an end surface of the flange portion; the outer diameter of the first step portion is smaller than the outer diameter of the flange portion; The first step portion is in clearance fit with the first hole, and during the process of the rod portion being combined with the second hole, the first step portion is combined with the first hole synchronously; In the length direction of the rod, the height of the first step portion is not greater than the height of the first hole.

10. A sealing riveting mechanism connection device, characterized in that: Through the sealing rivet mechanism as described in any one of claims 8 to 9, the end face of the flange portion facing the rod portion abuts against the end face of the first plate facing away from the second plate, the side wall of the second hole is tightly connected to the rod portion, the end face of the first plate facing the second plate is connected to the end face of the second plate facing the first plate, and the protrusion is connected to the end face of the second plate facing away from the first plate.

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