Locking prevention riveting structure and rivet gun head
By setting a fixed-length boss on the rivet gun head and placing shims between the plates, the problem of uncontrollable riveting tightness and rotational resistance in traditional riveting technology is solved, achieving appropriate control of tightness and rotational resistance after riveting, and improving the stability and adaptability of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU AV MOUNTS CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional riveting techniques struggle to precisely control the tightness and rotational resistance of the rivets, especially in applications where maintaining a certain level of rotational resistance or controllable tightness between the connectors is required, thus failing to meet specific needs.
A fixed-length boss is set on the head of the rivet gun to match the length of the sheet metal. The fixed-length boss and the concave part of the rivet nut are used to limit and constrain the rivet nut to prevent it from being over-tightened. Shims are placed between adjacent sheets to control the gap and rotation resistance.
It effectively controls the tightness and rotational resistance after riveting, avoids plate locking, adapts to a wider range of assembly tolerance requirements, and improves the stability and adjustability of the connection.
Smart Images
Figure CN224359326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of riveting technology, specifically to a riveting structure and a rivet gun head for preventing locking. Background Technology
[0002] Riveting, a common mechanical connection method, is widely used in sheet metal, aerospace, automotive, and construction industries. Riveting utilizes rivet nuts and specialized riveting tools to connect multiple components into a single unit, thus completing the riveting process. During installation, a rivet gun pulls the rivet nut, causing it to bulge and deform, forming a reverse bulge that firmly clamps the connecting parts.
[0003] However, conventional riveting technology also has certain limitations in practical applications, especially in situations requiring precise control of the tightness after riveting. Specifically, in the traditional riveting process, the deformation of the rivet nut depends on the force applied by the rivet gun. It is difficult to control the tightness between the connecting parts during the riveting process, i.e., riveting directly to the limit. While this uncontrollability can meet the needs of ordinary rigid connections, it is insufficient for some special applications, such as those requiring a certain rotational resistance or controllable tightness between the connecting parts after riveting. Therefore, how to ensure a strong connection while achieving consistent control of riveting tightness or rotational resistance has become a problem that existing riveting technologies need to solve. Utility Model Content
[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a riveting structure that prevents locking. By setting a fixed-length boss, the tightness during the riveting process can be effectively controlled, thereby avoiding complete locking between the plates or loss of control over rotational resistance due to excessive riveting.
[0005] Technical solution: This utility model discloses a riveting structure to prevent locking, wherein at least two plates are riveted together by rivet nuts, and the riveting structure includes:
[0006] A rivet gun head having a connecting part for connecting with a rivet gun, wherein the end of the connecting part facing away from the rivet gun extends sequentially and is fixedly connected to a first flange and a fixed-length boss, the length of which is not less than the total thickness of the plates to be riveted;
[0007] A rivet screw, which is movably axially inserted into the head of the rivet gun and connected to the output end of the rivet gun;
[0008] The inner wall of the rivet nut is provided with an internal thread portion and a recessed portion that engages with the internal thread portion;
[0009] The outer diameter of the fixed-length boss is larger than the inner diameter of the internal thread portion, so that the fixed-length boss can abut against the recess portion in the axial direction during riveting.
[0010] When the end face of the first flange facing the fixed-length boss coincides with the end face of the second flange of the rivet nut, the rivet bolt is threadedly connected to the internal thread of the rivet nut, the fixed-length boss is coaxially placed inside the rivet nut, and there is a pre-rivet distance between the end face of the fixed-length boss and the end face of the recess.
[0011] Furthermore, the outer diameter of the first flange is larger than the outer diameter of the fixed-length boss.
[0012] Furthermore, a gasket is provided between any two adjacent plates.
[0013] Furthermore, a gasket is provided between the second flange and the adjacent plate.
[0014] Furthermore, the rivet gun head also includes a mounting portion, which is located between the connecting portion and the first flange.
[0015] Furthermore, the connecting part is connected to the rivet gun via a thread.
[0016] Furthermore, the cross-section of the mounting portion perpendicular to the axial direction is polygonal.
[0017] This utility model discloses a riveting structure to prevent locking, wherein at least two plates are riveted together by rivet nuts, and the riveting structure includes:
[0018] A rivet gun head having a connecting part for connecting with a rivet gun, wherein the end of the connecting part facing away from the rivet gun extends sequentially and is fixedly connected to a first flange and a fixed-length boss, the length of which is not less than the total thickness of the plates to be riveted;
[0019] A rivet screw, which is movably axially inserted into the head of the rivet gun and connected to the output end of the rivet gun;
[0020] The inner wall of the rivet nut is provided with an internal thread portion and a recessed portion that engages with the internal thread portion;
[0021] The outer diameter of the fixed-length boss is larger than the inner diameter of the internal thread portion, so that the fixed-length boss can abut against the recess portion in the axial direction during riveting.
[0022] When the end face of the first flange facing the fixed-length boss coincides with the end face of the second flange of the rivet nut, the rivet bolt is threadedly connected to the internal thread of the rivet nut, the fixed-length boss is coaxially placed inside the rivet nut, the end face of the fixed-length boss abuts against the end face of the recess, and at least part of the inner wall of the rivet nut bulges to form a protrusion, the protrusion and the second flange together clamp at least two plates.
[0023] This utility model also discloses a rivet gun head, including a connecting part for connecting with a rivet gun. The end of the connecting part opposite to the rivet gun extends sequentially and is fixedly connected to a first flange and a length-fixing boss. The length-fixing boss is used to be inserted into the rivet nut to be installed for positioning. The rivet gun head also includes a through hole extending along its axial direction.
[0024] Furthermore, the outer wall surface of the connecting part has external threads.
[0025] Furthermore, the rivet gun head also includes a mounting portion, which is located between the connecting portion and the first flange.
[0026] Furthermore, the cross-section of the mounting portion perpendicular to the axial direction is circular.
[0027] Furthermore, the cross-section of the mounting portion perpendicular to the axial direction is polygonal.
[0028] The beneficial effects of this utility model are as follows:
[0029] (1) By setting a fixed length boss on the head of the rivet gun and matching its length with the total thickness of the plate, the fixed length boss limits and constrains the concave part of the rivet nut during rivet making, so as to avoid the rivet nut being over-tightened and completely locked, and effectively maintain the appropriate tightness and rotation resistance between the plates.
[0030] (2) By setting shims between adjacent plates, the gap control between plates is further optimized, avoiding the problem that the plates are too close to each other and cannot rotate, and can adapt to a wider range of assembly tolerance requirements. Attached Figure Description
[0031] 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:
[0032] Figure 1This is a schematic diagram of the anti-locking rivet structure described in this utility model;
[0033] Figure 2 This is a schematic diagram of the anti-locking rivet structure described in this utility model;
[0034] Figure 3 This is a schematic diagram of the structure of the rivet gun head described in this utility model;
[0035] Figure 4 This is a cross-sectional view of the rivet gun head described in this utility model;
[0036] Figure 5 This is a schematic diagram of the riveting structure described in this utility model;
[0037] Figure 6 This is a schematic diagram of the riveting structure described in this utility model;
[0038] Figure 7 This is a cross-sectional view of the riveting structure described in this utility model;
[0039] Figure 8 This is a schematic diagram of the rivet gun head described in this utility model.
[0040] In the diagram: 1. Sheet metal; 2. Rivet nut; 21. Internal thread; 22. Recess; 23. Second flange; 24. Protrusion; 3. Rivet gun head; 31. Connecting part; 32. First flange; 33. Length boss; 34. Mounting part; 4. Rivet bolt; 41. External thread; 5. Rivet gun; 6. Gasket. Detailed Implementation
[0041] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.
[0042] 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.
[0043] like Figures 1 to 7As shown, this utility model discloses a riveting structure to prevent locking, wherein at least two plates 1 are riveted together by rivet nuts 2, and the riveting structure includes:
[0044] The rivet gun head 3 has a connecting part 31 for connecting with the rivet gun 5. The end of the connecting part 31 facing away from the rivet gun 5 extends sequentially and is fixedly connected to a first flange 32 and a fixed-length boss 33. The length of the fixed-length boss 33 is not less than the total thickness of the plate 1 to be riveted.
[0045] The rivet screw 4 is axially inserted into the rivet gun head 3 and connected to the output end of the rivet gun 5.
[0046] The inner wall of the rivet nut 2 is provided with an internal thread portion 21 and a recessed portion 22 that connects with the internal thread portion 21;
[0047] The outer diameter of the fixed-length boss 33 is larger than the inner diameter of the internal thread portion 21, so that the fixed-length boss 33 can abut against the recess portion 22 in the axial direction during riveting.
[0048] When the end face of the first flange 32 facing the fixed-length boss 33 coincides with the end face of the second flange 23 of the rivet nut 2, the rivet screw 4 is threadedly connected to the internal thread portion 21 of the rivet nut 2, the fixed-length boss 33 is coaxially placed inside the rivet nut 2, and there is a pre-rivet distance between the end face of the fixed-length boss 33 and the end face of the recess portion 22.
[0049] With the above structure, the connecting part 31 of the rivet gun head 3 is connected to the rivet gun 5, and the rivet screw 4 passes through the rivet gun head 3 and is connected to the output end of the rivet gun 5. The rivet gun 5 can control the rivet screw 4 to rotate or reciprocate along its axial direction within the rivet gun head 3. Through the threaded connection between the rivet screw 4 and the rivet nut 2, the inner wall of the rivet nut 2 is deformed by bulging. The connection between the connecting part 31 and the rivet gun 5 can be a threaded connection, with threads on the connecting part 31, which is screwed into the rivet gun 5 to connect the two; or the connecting part 31 can be pressed and fixed by the radial pressure of the rivet gun 5. The connection method between the connecting part 31 and the rivet gun 5 varies depending on the characteristics of the rivet gun 5. The rivet gun 5 can be driven manually, pneumatically, or electrically.
[0050] like Figures 3 to 7As shown, the outer diameter of the first flange 32 of the rivet gun head 3 is larger than the outer diameter of the fixed-length boss 33. The rivet nut 2 passes through the through holes of at least two plates 1. The fixed-length boss 33 of the rivet gun head 3 extends into the rivet nut 2, and the rivet screw 4 is threadedly connected to the rivet nut 2. The first flange 32 of the rivet gun head 3 is tightly fitted to the second flange 23 of the rivet nut 2. The length of the fixed-length boss 33 is not less than the sum of the thicknesses of at least two plates 1, that is, the length of the fixed-length boss 33 is the thickness of several plates 1 after riveting. At this time, the fixed-length boss 33 does not contact the recessed portion 22 and a pre-riveting distance is reserved for the bulging deformation during riveting. The outer diameter of the fixed-length boss 33 is larger than the inner diameter of the internal thread portion 21. This ensures that when the rivet screw 4 is connected to the rivet nut 2 by the thread under the action of the rivet gun 5, and the rivet nut 2 is pulled towards the rivet gun head 3, the inner wall of the rivet nut 2 bulges, and the end face of the fixed-length boss 33 can coincide and abut with the end face of the recess portion 22, thereby limiting further deformation of the rivet nut 2 and preventing the plate 1 to be connected from being locked. The length of the fixed-length boss 33 depends on the total thickness of the plate 1 to be riveted. The length of the fixed-length boss 33 cannot be less than the thickness of the plate 1; otherwise, the rivet nut 2 will directly deform to the limit position during riveting, thereby directly locking the plate. Preferably, the length of the fixed-length boss 33 can be slightly longer than the total thickness of the plate 1. At this length, it can be ensured that the riveted plate 1 is not locked and can rotate freely around the rivet nut 2 as the axis under certain rotational resistance.
[0051] In this embodiment, a shim 6 is placed between any two adjacent plates 1. The shim 6 is located in the middle of the contact interface of the plates 1 under stress during the riveting process. During assembly, it controls the gap between the plates 1 to prevent adjacent plates 1 from being unable to rotate due to excessive riveting force. At the same time, the buffering effect of the shim 6 can also reduce stress concentration. The shim 6 placed between the plates 1 can provide a certain degree of tightness and rotational resistance, thereby helping to achieve a stable connection and uniform stress distribution.
[0052] Furthermore, a gasket 6 is also provided between the second flange 23 and its adjacent plate 1, forming an additional buffer layer during the tightening process of the rivet nut 2. This also prevents wear or locking caused by direct contact between the second flange 23 and the plate 1. At the same time, the gasket 6 can also provide a certain amount of compression space to absorb excess riveting force during the riveting process, thereby making the riveting force more controllable and the connection state of the plate 1 more gentle, further improving the stability and adjustability of the riveting connection.
[0053] Preferably, the rivet gun head 3 further includes a mounting portion 34, which is located between the connecting portion 31 and the first flange 32. The mounting portion 34 is used to position the connecting portion 31 and connect and fix the connecting portion 31 to the rivet gun 5. In a feasible embodiment, the connecting portion 31 has threads and is connected to the rivet gun 5 by threads, allowing the rivet gun head 3 to be easily and detachably installed with the rivet gun 5, which is beneficial for assembly, maintenance, and replacement, and improves versatility and operational efficiency. Correspondingly, the mounting portion 34 has a polygonal cross-section in the direction perpendicular to the axial direction. The polygonal structure facilitates accurate positioning and transmission of rotational force by the installation tool or operator during the assembly or disassembly of the rivet gun head 3. The polygonal mounting portion 34 can prevent the connecting portion 31 from rotating and sliding during assembly, thereby improving the reliability and ease of operation of the assembly, helping to maintain a stable connection state in high-intensity riveting operations, and enhancing durability.
[0054] like Figures 1 to 7 As shown, this utility model discloses a riveting structure to prevent locking, wherein at least two plates 1 are riveted together by rivet nuts 2, and the riveting structure includes:
[0055] The rivet gun head 3 has a connecting part 31 for connecting with the rivet gun 5. The end of the connecting part 31 facing away from the rivet gun 5 extends sequentially and is fixedly connected to a first flange 32 and a fixed-length boss 33. The length of the fixed-length boss 33 is not less than the total thickness of the plate 1 to be riveted.
[0056] The rivet screw 4 is axially inserted into the rivet gun head 3 and connected to the output end of the rivet gun 5.
[0057] The inner wall of the rivet nut 2 is provided with an internal thread portion 21 and a recessed portion 22 that connects with the internal thread portion 21;
[0058] The outer diameter of the fixed-length boss 33 is larger than the inner diameter of the internal thread portion 21, so that the fixed-length boss 33 can abut against the recess portion 22 in the axial direction during riveting.
[0059] When the end face of the first flange 32 facing the fixed-length boss 33 coincides with the end face of the second flange 23 of the rivet nut 2, the rivet screw 4 is threadedly connected to the internal thread portion 21 of the rivet nut 2, the fixed-length boss 33 is coaxially placed inside the rivet nut 2, the end face of the fixed-length boss 33 abuts against the end face of the recess portion 22, and at least part of the inner wall of the rivet nut 2 bulges to form a protrusion 24, the protrusion 24 and the second flange 23 together clamp at least two plates 1.
[0060] In the above structure, the fixed-length boss 33 and the recessed portion 22 abut against each other, and the pre-riveting distance reserved for bulging deformation during riveting is compressed. Specifically, the outer diameter of the fixed-length boss 33 is larger than the inner diameter of the internal thread portion 21 to ensure that when the rivet screw 4 is pulled towards the rivet nut 2 by the threaded connection between it and the rivet nut 2 under the action of the rivet gun 5, at least part of the inner wall of the rivet nut 2 bulges and deforms to form a protrusion 24. At the same time, the end face of the fixed-length boss 33 can coincide and abut with the end face of the recessed portion 22, thereby limiting further deformation of the rivet nut 2 and preventing the plate 1 to be connected from being locked. The length of the fixed-length boss 33 depends on the total thickness of the plate 1 to be riveted. The length of the fixed-length boss 33 cannot be less than the thickness of the plate 1; otherwise, the rivet nut 2 will directly deform to the limit position during riveting, thereby directly locking the plate 1. Preferably, the length of the fixed-length boss 33 can be slightly longer than the total thickness of the plate 1. At this length, it can be ensured that the plate 1 is not locked after riveting, and that the plate 1 can rotate freely around the rivet nut 2 as the axis under certain rotational resistance.
[0061] like Figure 1 and Figure 8 As shown, this utility model also discloses a rivet gun head 3, including a connecting part 31 for connecting with a rivet gun 5. The end of the connecting part 31 opposite to the rivet gun 5 extends sequentially to be fixedly connected to a first flange 32 and a length-fixing boss 33. The length-fixing boss 33 is used to be inserted into the rivet nut 2 to be installed for positioning. The rivet gun head 3 also includes a through hole extending along its axial direction.
[0062] With the above structure, the connecting part 31 of the rivet gun head 3 is connected to the rivet gun 5, and the rivet gun 5 is also connected to a rivet screw 4, which axially passes through the rivet gun head 3. The connecting part 31 can be connected to the rivet gun 5 by threads, or the connecting part 31 can be pressed and fixed by the radial pressure applied to it by the rivet gun 5. The specific connection method can be determined according to the actual type of rivet gun 5. The through hole is used to accommodate the rivet screw 4, which can movably pass through the rivet gun head 3. The rivet screw 4 is connected to the output end of the rivet gun 5, thereby pulling the rivet nut 2 to deform.
[0063] Preferably, the outer wall surface of the connecting part 31 has an external thread 41, and the connecting part 31 is connected and fixed to the rivet gun 5 by the thread, so that this installation method can make the rivet gun head 3 conveniently connected to the rivet gun 5.
[0064] Furthermore, by providing a mounting part 34 between the connecting part 31 and the first flange 32, the rivet gun head 3 can be more stably installed with the rivet gun 5. When the cross-section of the mounting part 34 is circular perpendicular to the axial direction, it facilitates rotational installation; when the cross-section of the mounting part 34 is polygonal, it can be rotated and fixed using tools such as wrenches during installation, preventing relative slippage during installation and enhancing the ease of assembly of the rivet gun head 3.
[0065] 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 riveting structure for preventing locking, characterized in that, At least two plates are riveted together by rivet nuts, the riveting structure including: A rivet gun head having a connecting part for connecting with a rivet gun, wherein the end of the connecting part facing away from the rivet gun extends sequentially and is fixedly connected to a first flange and a fixed-length boss, the length of which is not less than the total thickness of the plates to be riveted; A rivet screw, which is movably axially inserted into the head of the rivet gun and connected to the output end of the rivet gun; The inner wall of the rivet nut is provided with an internal thread portion and a recessed portion that engages with the internal thread portion; The outer diameter of the fixed-length boss is larger than the inner diameter of the internal thread portion, so that the fixed-length boss can abut against the recess portion in the axial direction during riveting. When the end face of the first flange facing the fixed-length boss coincides with the end face of the second flange of the rivet nut, the rivet bolt is threadedly connected to the internal thread of the rivet nut, the fixed-length boss is coaxially placed inside the rivet nut, and there is a pre-rivet distance between the end face of the fixed-length boss and the end face of the recess.
2. The anti-locking riveting structure according to claim 1, characterized in that, The outer diameter of the first flange is larger than the outer diameter of the fixed-length boss.
3. The anti-locking riveting structure according to claim 1, characterized in that, A gasket is provided between any two adjacent plates; a gasket is provided between the second flange and its adjacent plate.
4. The anti-locking riveting structure according to claim 1, characterized in that, The rivet gun head also includes a mounting part, which is located between the connecting part and the first flange; the cross section of the mounting part perpendicular to the axial direction is polygonal; the connecting part is connected to the rivet gun by threads.
5. A riveting structure for preventing locking, characterized in that, At least two plates are riveted together by rivet nuts, the riveting structure including: A rivet gun head having a connecting part for connecting with a rivet gun, wherein the end of the connecting part facing away from the rivet gun extends sequentially and is fixedly connected to a first flange and a fixed-length boss, the length of which is not less than the total thickness of the plates to be riveted; A rivet screw, which is movably axially inserted into the head of the rivet gun and connected to the output end of the rivet gun; The inner wall of the rivet nut is provided with an internal thread portion and a recessed portion that engages with the internal thread portion; The outer diameter of the fixed-length boss is larger than the inner diameter of the internal thread portion, so that the fixed-length boss can abut against the recess portion in the axial direction during riveting. When the end face of the first flange facing the fixed-length boss coincides with the end face of the second flange of the rivet nut, the rivet bolt is threadedly connected to the internal thread of the rivet nut, the fixed-length boss is coaxially placed inside the rivet nut, the end face of the fixed-length boss abuts against the end face of the recess, and at least part of the inner wall of the rivet nut bulges to form a protrusion, the protrusion and the second flange together clamp at least two plates.
6. A rivet gun head, characterized in that, The device includes a connecting part for connection with a rivet gun, wherein the end of the connecting part opposite to the rivet gun extends sequentially and is fixedly connected to a first flange and a length-fixing boss, the length-fixing boss being used for positioning by inserting into the rivet nut to be installed, and the rivet gun head also includes a through hole extending along its axial direction.
7. The rivet gun head according to claim 6, characterized in that, The outer wall surface of the connecting part has external threads.
8. The rivet gun head according to claim 6, characterized in that, The rivet gun head also includes a mounting part, which is located between the connecting part and the first flange.
9. The rivet gun head according to claim 8, characterized in that, The cross-section of the mounting part perpendicular to the axial direction is circular.
10. The rivet gun head according to claim 8, characterized in that, The cross-section of the mounting part perpendicular to the axial direction is polygonal.