Flanging press riveting element and system structure

Abstract

The utility model discloses a flanging and pressing riveting element and a system structure, the flanging and pressing riveting element is used for riveting a workpiece, and a main body part of the flanging and pressing riveting element is provided with a first end and a second end which are opposite to each other; the core part is arranged at the first end of the main body part; the flanging part is arranged at the first end of the main body part and is positioned on the periphery of the core part; the flanging part can generate outward deformation relative to the core part to form a deformation part which can be attached to a workpiece; the inner diameter of the turnup part is gradually increased from the joint of the turnup part and the main body part to the first end along the second end, and the inner diameter of the turnup part is larger than the diameter of the core part, so that a crack space for inserting a mounting mold is formed between the inner peripheral wall of the turnup part and the outer side wall of the core part; the outer diameter of the flanging part is equal to the diameter of the main body part; the flanging part protrudes out of the core part in the direction from the second end to the first end. When connected with one or more workpieces, the flanging pressing rivet element can be attached to the connected workpieces in a self-deformation mode so as to provide high ejection force and high torsion.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a flanging riveting element and a system structure. Background Art

[0002] In order to improve the driving range of electric vehicles, the first thing to do is to lighten the body, so thin plates are increasingly used in this area. For example, subframes, bodies, and batteries all use thin plate-like workpieces. However, when using traditional rivets to connect thin plate-like workpieces, there are many problems. For example, after the thin plate-like workpieces are connected, the rivets are not actually embedded in the thin plate-like workpiece, or because the rivets use a flanging riveting process, there is a gap between the deformed part formed by the flanging of the rivets and the thin plate-like workpiece, which will lead to insufficient clamping force on the thin plate-like workpiece, unable to provide high ejection force, and the formed system structure cannot obtain high torsion resistance, etc. This shortcoming is more prominent when connecting multiple layers of thin plate-like workpieces. Utility Model Content

[0003] In order to overcome the defects in the prior art, the main purpose of the utility model is to provide a flanging riveting element and a system structure. When connecting one or more workpieces, the provided flanging riveting element can fit the connected workpieces by deforming itself, thereby holding the workpieces in the extension direction from the first end to the second end to provide high ejection force.

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

[0005] The utility model provides a flanging riveting element, which is used for riveting workpieces. The flanging riveting element comprises:

[0006] a main body portion having opposing first and second ends;

[0007] a core portion, the core portion being disposed at a first end of the main body portion;

[0008] A flanging portion, the flanging portion is arranged at the first end of the main body and is located at the periphery of the core; the flanging portion can be deformed outward relative to the core to form a deformed portion that can fit the workpiece; wherein,

[0009] The inner diameter of the flange portion gradually increases from the connection between the flange portion and the main body portion in the direction from the second end to the first end, and the inner diameter of the flange portion is greater than the diameter of the core portion, so that a gap space for inserting the installation mold is formed between the inner peripheral wall of the flange portion and the outer side wall of the core portion;

[0010] The outer diameter of the flange portion is equal to the diameter of the main body portion;

[0011] The flange portion protrudes from the core portion along a direction from the second end toward the first end.

[0012] As a further description of the above technical solution, the main body, the core and the flange are of an integrated structure; or,

[0013] The main body, the core and the flange are of separate structures.

[0014] As a further description of the above technical solution, the outer edge of the second end of the main body extends radially to form a flange head; the flange head has an end face that can fit with the workpiece on the side facing the first end and a recess is formed in the end face, and the recess surrounds the body of the main body at the transition zone where the flange head enters the main body.

[0015] As a further description of the above technical solution, a cross-sectional area of ​​the recess gradually increases along the direction from the flange head toward the first end.

[0016] As a further description of the above technical solution, the flanging riveting element further includes at least one anti-rotation portion for preventing relative rotation between the flanging riveting element and the workpiece after the flanging riveting element is connected to the workpiece;

[0017] The anti-rotation portion is arranged on an end surface of the flange head portion facing the first end and capable of contacting a workpiece and / or on a circumferential outer wall of the main body portion adjacent to the flange head portion.

[0018] As a further description of the above technical solution, the anti-rotation portion is formed by an end surface of the flange head facing the first end that can contact the workpiece and / or a concave circumferential outer wall of the main body adjacent to the flange head; or,

[0019] The anti-rotation portion is formed by an end surface capable of contacting a workpiece and having a side of the flange head facing the first end and / or a circumferential outer wall of the main body adjacent to the flange head that protrudes outward.

[0020] As a further description of the above technical solution, the cross-section of the flange head is circular, square, hexagonal or octagonal.

[0021] As a further description of the above technical solution, the flanging riveting element is a hollow element, a central channel of which axially penetrates the main body and the core, and the inner wall of the central channel is provided with threads, or can be provided with threads.

[0022] The utility model also provides a system structure, comprising:

[0023] At least one workpiece, the workpiece is provided with a riveting hole; and the flanging riveting element as described above; wherein,

[0024] The main body of the flanged riveting element is sleeved in the riveting hole; the deformed portion formed by the flanged portion deforming outwardly along the circumferential direction relative to the core portion is in contact with the workpiece toward the end surface of the workpiece;

[0025] The second end of the flanging riveting element faces the end surface of the workpiece and fits with the workpiece;

[0026] A side of the core facing away from the second end is flush with a side of the deformation portion facing away from the second end; or,

[0027] A side of the core portion facing away from the second end protrudes from the deformation portion.

[0028] As a further description of the above technical solution, after the main body of the flange riveting element is sleeved in the riveting hole of the workpiece, a mounting die is used to insert the mounting die into the gap space between the inner peripheral wall of the flange portion and the outer peripheral wall of the core portion;

[0029] The flanged rivet element is riveted along the direction from the second end of the main body toward the first end. During the riveting process, the mounting die forces the flanged portion of the flanged rivet element to deform outwardly in the circumferential direction relative to its core portion to form a deformed portion that can fit the workpiece.

[0030] The outstanding effects of the utility model are:

[0031] 1. The flanged rivet element provided by the utility model is different from the conventional flanged rivet element. Only a flanged portion with an outer diameter equal to that of the main body is arranged at the first end of the main body. At the same time, a core portion is arranged at the first end of the main body, and the core portion is located at the inner circumference of the flanged portion. The inner diameter of the flanged portion gradually increases from the connection between the flanged portion and the main body along the second end of the main body toward the first end, and the inner diameter is larger than the diameter of the core portion. Therefore, a gradually expanding gap space is formed between the flanged portion and the core portion along the direction from the second end to the first end for the installation mold to be inserted. When the flanging riveting element is used to connect workpieces, the main body of the flanging riveting element can be placed in the riveting hole of the workpiece, and the installation mold can be inserted into the crack space formed between the flanging part and the core part, so that the flanging riveting element can be riveted along the direction from the second end of the main body part to the first end. During the riveting process, the installation mold inserted into the above-mentioned crack will at least force the part of the flanging part protruding from the core part along the direction from the second end to the first end to deform outward relative to the core part and transform into a deformed part; after the riveting action is completed, the surface of the finally formed deformed part facing the workpiece will fit with the workpiece, thereby holding the workpiece together with the second end of the main body part to provide a high ejection force;

[0032] 2. The flanged riveting element provided by the utility model also includes at least one anti-rotation portion for preventing relative rotation after being connected to a workpiece. The anti-rotation portion is arranged on an end surface of the flange head facing its first end that can contact the workpiece and / or on a circumferential outer wall of the main body adjacent to the flange head. Therefore, in the process of riveting the workpiece using the flanged riveting element, the anti-rotation portion will engage with the material portion of the workpiece that is squeezed and forced to flow into the recess, so that the flanged riveting element will not easily rotate relative to the workpiece after being connected to provide high torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of the flanging riveting element in the first embodiment of the utility model;

[0035] Figure 2 It is a schematic cross-sectional structure diagram of the flanging riveting element in the first embodiment of the utility model;

[0036] Figure 3 It is a cross-sectional schematic diagram of a system structure composed of a flanging riveting element and a workpiece in the first embodiment of the utility model;

[0037] Figure 4 It is a cross-sectional schematic diagram of a system structure composed of a flanging riveting element and a plurality of workpieces in the first embodiment of the utility model;

[0038] Figure 5 It is a structural schematic diagram of the flanging riveting element in the second embodiment of the utility model;

[0039] Figure 6 It is a structural schematic diagram of a flanging riveting element in a third embodiment of the utility model;

[0040] Figure 7 It is a structural schematic diagram of a flanging riveting element in a fourth embodiment of the utility model;

[0041] Figure 8 It is a cross-sectional schematic diagram of a system structure composed of a flanging riveting element and a workpiece in the fourth embodiment of the utility model.

[0042] Reference numerals:

[0043] 1. Main body; 11. First end; 12. Second end; 2. Core; 3. Flanging; 4. Deformation; 5. Flange head; 6. Concave; 7. Anti-rotation part; 8. Center channel; 81. Thread; 9. Workpiece. DETAILED DESCRIPTION

[0044] 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.

[0045] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" 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. 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.

[0046] See also Figures 1 to 8 The embodiment of the utility model discloses a flanging riveting element, which is used for riveting a workpiece 9, and the flanging riveting element comprises:

[0047] A main body 1 having a first end 11 and a second end 12 opposite to each other;

[0048] A core 2, wherein the core 2 is disposed at the first end 11 of the main body 1;

[0049] The flange portion 3 is provided at the first end 11 of the main body 1 and is located at the outer periphery of the core 2; the flange portion 3 can be deformed outward relative to the core 2 to form a deformed portion 4 that can fit the workpiece 9; wherein,

[0050] The inner diameter of the flange portion 3 gradually increases from the connection between the flange portion 3 and the main body portion 1 along the second end 12 toward the first end 11, and the inner diameter of the flange portion 3 is greater than the diameter of the core portion 2, so that a gap space for inserting the installation mold is formed between the inner peripheral wall of the flange portion 3 and the outer side wall of the core portion 2;

[0051] The outer diameter of the flange portion 3 is equal to the diameter of the main body portion 1;

[0052] The flange portion 3 protrudes from the core portion 2 along the direction from the second end 12 to the first end 11 .

[0053] The above-mentioned setting method is different from the conventional flanging riveting element. Only the first end 11 of the main body 1 is provided with a flanging portion 3 with an outer diameter equal to that of the main body 1. At the same time, a core 2 is provided at the first end 11 of the main body 1, and the core 2 is located at the inner periphery of the flanging portion 3. The inner diameter of the flanging portion 3 gradually increases from the connection between the flanging portion 3 and the main body 1 along the second end 12 of the main body 1 toward the first end 11, and its inner diameter is greater than the diameter of the core 2. Therefore, along the direction from the second end 12 to the first end 11, a gradually expanding gap space is formed between the flanging portion 3 and the outer side wall of the core 2 for the installation mold to be inserted. When the flanging riveting element is used to connect the workpiece 9, the main body 1 of the flanging riveting element can be placed in the riveting hole of the workpiece 9, and the installation mold can be inserted into the crack space formed between the flanging portion 3 and the core portion 2, so that the flanging riveting element can be riveted along the second end 12 of the main body 1 toward the first end 11. During the riveting action, the installation mold inserted into the above-mentioned crack will at least force the part of the flanging portion 3 protruding from the core portion 2 along the direction from the second end 12 to the first end 11 to undergo outward deformation relative to the core portion 2 and deform into a deformation portion 4; after the riveting action is completed, the surface of the finally formed deformation portion 4 facing the workpiece 9 will fit with the workpiece 9, thereby holding the workpiece 9 together with the second end 12 of the main body 1 to provide a high ejection force.

[0054] See also Figures 1 to 4 Specifically, in the first embodiment, the main body 1, the core 2 and the flange 3 are of an integrated structure. Of course, in other embodiments, the main body 1, the core 2 and the flange 3 may also be of a split structure. When the main body 1, the core 2 and the flange 3 are of a split structure, the three may be connected by transition fit, interference fit, threaded connection or adhesive connection. The split structure makes the manufacturing of the flange riveting element more flexible and convenient, which is conducive to simplifying the difficulty of manufacturing the forming mold and improving the service life of the mold.

[0055] Specifically, in this embodiment, the outer edge of the second end 12 of the main body 1 extends radially to form a flange head 5, and the end face of the flange head 5 on the side facing the first end 11 can fit with the workpiece 9 after the workpiece 9 is riveted, so as to cooperate with the deformation part 4 formed by the flange part 3 being flanging outward to hold the workpiece 9 tightly to provide a high ejection force. A recess 6 is formed in the end face, and the recess 6 surrounds the main body of the main body 1 at the transition zone where the flange head 5 enters the main body 1. In the process of the flange part 3 gradually flanging outward, its essence is to flanging toward its outer peripheral side and toward the second end 12, so it will squeeze the workpiece 9 toward its outer peripheral side and the second end 12 of the main body 1 at the same time, and the material part of the workpiece 9 that flows due to the extrusion will flow into the recess 6 provided and be accommodated, without causing the part of the workpiece 9 exposed outside the flanging riveting element to deform, thereby avoiding the problem of unqualified products after riveting connection.

[0056] Specifically, in this embodiment, the cross-sectional area of ​​the recess 6 along the direction of the flange head 5 toward the first end 11 gradually increases, thereby better guiding the workpiece 9 material flowing due to the extrusion of the flanging portion 3 to flow into the recess 6.

[0057] Specifically, in this embodiment, the flanged rivet element includes 8 anti-rotation parts 7 to prevent relative rotation after it is connected to the workpiece 9, thereby providing high torque. Of course, in other embodiments, the anti-rotation parts 7 can also be set to other numbers. More specifically, in this embodiment, the 8 anti-rotation parts 7 are all arranged on the end surface of the flange head 5 facing the first end 11 and capable of contacting the workpiece 9, that is, in the bottom area of ​​the recess 6, and each anti-rotation part 7 extends along the cross-sectional direction of the recess 6, thereby providing safety to prevent rotation. Preferably, the 8 anti-rotation parts 7 are arranged equidistantly along the circumference to surround the body of the main body 1. Therefore, the 8 anti-rotation parts 7 will interlock with the material of the workpiece 9 that is squeezed and forced to flow into the recess 6, so that the flanged rivet element will not easily rotate relative to the workpiece 9 after being connected. Further, the anti-rotation part 7 is formed by the bottom area of ​​the annular recess being concave at equidistant intervals along the circumference. Of course, in other embodiments, the anti-rotation portion 7 is formed by the bottom area of ​​the annular recess protruding outward at equal intervals along the circumferential direction.

[0058] See also Figure 5Specifically, in the second embodiment, unlike the first embodiment, the anti-rotation portion 7 is disposed on the circumferential outer wall of the main body 1 adjacent to the flange head 5, so that it can also interlock with the material of the workpiece 9 that is squeezed and forced to flow into the recess 6 to prevent relative rotation after it is connected with the workpiece 9, thereby providing high torque. More specifically, in this embodiment, the anti-rotation portion 7 is formed by the circumferential outer wall of the main body 1 adjacent to the flange head 5 protruding at equal intervals along the circumferential direction. Of course, in other embodiments, the anti-rotation portion 7 is formed by the circumferential outer wall of the main body 1 adjacent to the flange head 5 concave at equal intervals along the circumferential direction.

[0059] See also Figure 6 Specifically, in the third embodiment, the anti-rotation portion 7 is provided on the end surface of the flange head 5 facing the first end 11 and capable of contacting the workpiece 9, and on the circumferential outer wall of the main body 1 adjacent to the flange head, and each anti-rotation portion 7 is integrally connected and formed. In other words, each anti-rotation portion 7 is provided at the transition zone where the flange head 5 enters the main body 1, and can be interlocked with the material of the workpiece 9 forced to flow into the recess 6 by being squeezed to prevent relative rotation after being connected with the workpiece 9, thereby providing high torque. More specifically, in this embodiment, the anti-rotation portion 7 is formed by the material of the transition zone where the flange head 5 enters the main body 1 protruding outward at equal intervals in the circumferential direction. Of course, in other embodiments, the anti-rotation portion 7 can also be formed by the material of the transition zone where the flange head 5 enters the main body 1 concave at equal intervals in the circumferential direction. It should be understood by those skilled in the art that, whether the anti-rotation portion 7 is in the shape of an inwardly concave groove or an outwardly protruding protrusion, it is preferably provided with rounded corners, so that when it is interlocked with the material of the workpiece 9, the sharp piercing edge is avoided from piercing the material of the workpiece 9, thereby ensuring that the riveted workpiece 9 will not crack at the riveted part and other problems, and ensuring the continuous maintenance of high torque. In addition, a group of anti-rotation portions 7 included in the same flanging riveting element are preferably arranged in the same area, so as to facilitate the uniformity of torque after the flanging riveting element and the workpiece 9 are riveted.

[0060] See also Figures 1 to 7 Specifically, in the first to fourth embodiments, the cross-section of the flange head 5 (except the recess 6) is circular. Of course, in other embodiments, in order to meet different locking requirements, the cross-section of the flange head 5 can also be any shape such as square, hexagon or octagon. In other words, the appearance of the flange head 5 can be cylindrical, cubic, polygonal, etc.

[0061] See also Figures 1 to 6Specifically, in the first to third embodiments, the flanged rivet components are all hollow components, and the central channel 8 thereof axially penetrates the main body 1 and the core 2. The inner wall of the central channel 8 is provided with a thread 81, so that after the flanged rivet component is riveted to the workpiece 9, the workpiece 9 can be connected to other components to be assembled by means of a fastener that can cooperate with the thread 81 of the central channel 8. Figures 7 and 8 As shown, in the fourth embodiment, the flanging riveting element is a solid element, that is, there is no central channel 8 axially penetrating the main body 1 and the core 2. The flanging riveting element can only rely on the clamping effect of its flange portion and the deformation portion 4 formed by the outward turning of the flanging portion 3 on the workpiece 9, and rivet and fix one or more workpieces 9 along the extension direction of its main body 1 to provide high ejection force, and at the same time provide high torque with the help of the anti-rotation portion 7 in the bottom area of ​​its recess 6.

[0062] See also Figure 3 Specifically, the first embodiment of the utility model further discloses a system structure, including a workpiece 9 and the flanging riveting element as described above, wherein the workpiece 9 is in the shape of a thin plate and is provided with a riveting hole, and the main body 1 of the flanging riveting element is sleeved in the riveting hole, and the deformation part 4 formed by the flanging part 3 being flanging outwardly relative to the core part 2 along the circumferential direction is fitted with the workpiece 9 toward the end face of the workpiece 9, and the second end 12 of the riveting element (that is, the flange head 5 formed by the radial extension of its outer edge) is also fitted with the workpiece 9 toward the end face of the workpiece 9, so that the two cooperate to hold the workpiece 9 in the extension direction of the main body 1 and provide high ejection force, and at the same time, the concave part 6 formed by the flange head 5 formed by the radial extension of the outer edge of the second end 12 of the riveting element toward the end face of the first end 11 accommodates the flowing workpiece 9 material, and the workpiece 9 material will also be interlocked with the anti-rotation part 7 in the process of flowing to the concave part 6, so as to obtain high torque, so that the workpiece 9 and the flanging riveting element are firmly riveted. The side of the final deformed portion 4 away from the second end 12 is flush with the side of the core 2 away from the second end 12, so that the flanged riveting element does not occupy the space of the workpiece 9 at the second end 12, and has stronger applicability. Figure 4 As shown, the flanged riveting element can also be used to simultaneously rivet multiple workpieces 9, even if multiple workpieces 9 are arranged in sequence along the extension direction of the main body 1, the riveting holes on them correspond one by one for the main body 1 of the flanged riveting element to be inserted therein, and the system structure containing multiple workpieces 9 can be formed by performing the riveting action using the mounting mold and the riveting mechanism. In addition, Figure 8 As shown, in the system structure formed in other embodiments, the side of the core 2 away from the second end 12 can also protrude from the final-formed deformation portion 4.

[0063] Specifically, in the process of forming the system structure, the main body 1 of the flanged riveting element will first be sleeved in the riveting hole of the workpiece 9, and then the mounting mold will be used to insert into the crack space between the inner circumferential wall of the flanged portion 3 and the outer circumferential wall of the core portion 2; then the flanged riveting element can be riveted along the second end 12 of the main body 1 toward the first end 11, so that the workpiece and the anti-rotation portion 7 are engaged to obtain high torque; at the same time, during the riveting process, the mounting mold will also force the flanged portion 3 of the flanged riveting element to deform outwardly along the circumferential direction relative to its core portion 2, thereby finally forming a deformed portion 4 that can fit with the workpiece, and cooperate with the second end 12 of the flanged riveting element to hold the workpiece tightly and provide high ejection force.

[0064] 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 flanging riveting component, It is characterized in that It is used for riveting workpieces, and the flanging riveting element comprises: a main body portion having opposing first and second ends; a core portion, the core portion being disposed at a first end of the main body portion; A flanging portion, the flanging portion is arranged at the first end of the main body and is located at the periphery of the core; the flanging portion can be deformed outward relative to the core to form a deformed portion that can fit the workpiece; wherein, The inner diameter of the flange portion gradually increases from the connection between the flange portion and the main body portion in the direction from the second end to the first end, and the inner diameter of the flange portion is greater than the diameter of the core portion, so that a gap space for inserting the installation mold is formed between the inner peripheral wall of the flange portion and the outer side wall of the core portion; The outer diameter of the flange portion is equal to the diameter of the main body portion; The flange portion protrudes from the core portion along a direction from the second end toward the first end.

2. The flange riveting element according to claim 1, It is characterized in that The main body, core and flange are of an integrated structure; or, The main body, the core and the flange are of separate structures.

3. The flange riveting element according to claim 1, It is characterized in that The outer edge of the second end of the main body extends radially to form a flange head; the flange head has an end face that can fit with the workpiece on the side facing the first end and a recess is formed in the end face, and the recess surrounds the body of the main body at the transition zone where the flange head enters the main body.

4. The flange riveting element according to claim 3, It is characterized in that A cross-sectional area of ​​the recess gradually increases along a direction from the flange head toward the first end.

5. The flanging riveting element according to claim 3, It is characterized in that The flanging riveting element further comprises at least one anti-rotation portion for preventing relative rotation between the flanging riveting element and the workpiece after the flanging riveting element is connected to the workpiece; The anti-rotation portion is arranged on an end surface of the flange head portion facing the first end and capable of contacting a workpiece and / or on a circumferential outer wall of the main body portion adjacent to the flange head portion.

6. The flanging riveting element according to claim 5, It is characterized in that The anti-rotation portion is formed by an end surface of the flange head facing the first end that can contact the workpiece and / or a concave circumferential outer wall of the main body adjacent to the flange head; or, The anti-rotation portion is formed by an end surface capable of contacting a workpiece and having a side of the flange head facing the first end and / or a circumferential outer wall of the main body adjacent to the flange head that protrudes outward.

7. The flanging riveting element according to claim 3, It is characterized in that The cross section of the flange head is circular, square, hexagonal or octagonal.

8. The flange riveting element according to any one of claims 1 to 7, It is characterized in that The flanging riveting element is a hollow element, a central channel of which axially penetrates the main body and the core, and the inner wall of the central channel is provided with threads or can be provided with threads.

9. A system structure, It is characterized in that include: At least one workpiece, wherein the workpiece is provided with a riveting hole; and the flanging riveting element according to any one of claims 1 to 7; wherein, The main body of the flanged riveting element is sleeved in the riveting hole; the deformed portion formed by the flanged portion deforming outwardly along the circumferential direction relative to the core portion is in contact with the workpiece toward the end surface of the workpiece; The second end of the flanging riveting element faces the end surface of the workpiece and fits with the workpiece; A side of the core facing away from the second end is flush with a side of the deformation portion facing away from the second end; or, A side of the core portion facing away from the second end protrudes from the deformation portion.

10. The system structure according to claim 9, It is characterized in that After the main body of the flange riveting element is sleeved in the riveting hole of the workpiece, a mounting die is used to insert the die into the gap between the inner peripheral wall of the flange part and the outer peripheral wall of the core part; The flanged rivet element is riveted along the direction from the second end of the main body toward the first end. During the riveting process, the mounting die forces the flanged portion of the flanged rivet element to deform outwardly in the circumferential direction relative to its core portion to form a deformed portion that can fit the workpiece.

Images