Fastener capable of increasing thread length, fastening system and operation method

Abstract

The invention discloses a fastener capable of increasing the thread length, a fastening system and an operation method, the fastener comprises a body, the body is of a hollow columnar structure, and the body is provided with a first end and a second end in the axis direction of the body; the supporting flange is arranged in the middle of the body in the axial direction of the body; the first end of the body extends in the axial direction to form a rivet turning part and a thread extending part, and a groove is formed between the rivet turning part and the thread extending part. The inner side of the body is provided with an internal thread, and the internal thread extends from the second end of the body to the thread extension part. According to the fastening connecting piece capable of increasing the thread length and being applied to the multi-layer plate, the thread length of the fastening connecting piece is increased, the connecting strength of the multi-layer plate is enhanced, and the stability of the connecting piece in a multi-layer structure is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of connecting pieces, and in particular to a fastener with increased thread length, a fastening system and an operating method. Background Art

[0002] Riveting is a mechanical connection method that inserts one end of the rivet or connector into a pre-punched hole, and then uses a special tool to fold or press the other end to firmly fix it on the material. For automotive conductive connections, compact fasteners play an important role in the industry. At the same time, the application of multi-layer conductive copper plates (or aluminum plates) is becoming more and more common, and it is becoming more and more urgent to find a suitable fastening solution.

[0003] The existing connection methods are mainly riveting and welding. Riveting requires a large deformation area, so it is not convenient to design a long internal thread in a limited space, which will further affect the connection reliability of external connectors; the high temperature and high heat environment during welding will destroy the structural performance of the connected plates, thus affecting the overall strength and reliability, and the welding installation process is also relatively complicated. Summary of the invention

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide a fastener and a fastening system and an operating method with increased thread length, thereby increasing the thread length of the fastening connector, enhancing the connection strength of the multilayer board, and ensuring the stability of the connector in the multilayer structure.

[0005] Technical solution: The present invention discloses a fastener with increased thread length, comprising:

[0006] A body, the body being a hollow columnar structure, and having a first end and a second end along its axial direction;

[0007] A supporting flange, wherein the supporting flange is arranged at a middle position of the main body along the axial direction of the main body;

[0008] A riveted portion and a threaded extension portion are extended axially from the first end of the body, and a groove is provided between the riveted portion and the threaded extension portion;

[0009] An internal thread is disposed on the inner side of the body, and the internal thread extends from the second end of the body to the thread extension portion.

[0010] Furthermore, a knurling wheel is provided on the outer circumference of the main body, the knurling wheel is adjacent to the supporting flange, and the knurling wheel is located on the side of the supporting flange facing the first end of the main body.

[0011] Furthermore, the plane where the end of the riveted portion is located is higher than the plane where the end of the threaded extension portion is located.

[0012] Furthermore, the knurling wheel is composed of polygonal structures arranged circumferentially.

[0013] Furthermore, the fastener is made of metal with plasticity.

[0014] The present invention also discloses a fastening system for increasing the length of a thread, comprising:

[0015] A fastener, the fastener comprising a body and a support flange, the body being a hollow columnar structure, the body having a first end and a second end along its axial direction, the support flange being arranged at a middle position of the body along the axial direction of the body, the first end of the body extending a riveted portion and a threaded extension portion along the axial direction, a groove being arranged between the riveted portion and the threaded extension portion, an internal thread being arranged on the inner side of the body, the internal thread extending from the second end of the body to the threaded extension portion;

[0016] A plate, the plate being at least one, and the plate being provided with a through hole matching the body of the fastener;

[0017] The rivet piece includes two protrusions for riveting the fastener, and the groove can accommodate the protrusions, so that the rivet piece can rivet and fix the riveted part.

[0018] Furthermore, the surface where the protrusion contacts the groove is an inclined surface, and the protrusion presses the riveted portion toward the outside of the main body, so that the riveted portion is fixed to the plate by riveting.

[0019] Furthermore, the plate is made of copper or aluminum.

[0020] Furthermore, a plane where an end portion of the internal thread facing the first end of the body is located is not lower than a plane where a side of the plate facing the first end of the body is located.

[0021] The present invention also discloses an operating method of a fastening system for increasing thread length, comprising the following steps:

[0022] A fastener is provided, the fastener comprising a body and a support flange, the body being a hollow columnar structure, the body having a first end and a second end along its axial direction, the support flange being arranged at a middle position of the body along the axial direction of the body, the first end of the body extending a riveted portion and a threaded extension portion along the axial direction, a groove being arranged between the riveted portion and the threaded extension portion, an internal thread being arranged on the inner side of the body, the internal thread extending from the second end of the body to the threaded extension portion;

[0023] Providing a plate, wherein the plate is provided with a through hole through which the body of the fastener can pass;

[0024] The plate is sleeved from the first end of the fastener, and a side of the plate facing away from the first end of the fastener is in close contact with the support flange;

[0025] The protrusion of the rivet is matched with the groove of the fastener, and the rivet is pressed so that the protrusion is squeezed with the rivet part, and the rivet part is turned outward to the outside of the main body, so as to be riveted and fixed with the plate sleeved outside the main body.

[0026] The beneficial effects of the present invention are:

[0027] (1) By riveting the fasteners to the multi-layer board, a mechanical lock is formed, which provides stronger torsion and push-out strength, can withstand larger loads, and has a more stable connection;

[0028] (2) The internal thread extends to the thread extension, increasing the thread contact area, thereby enhancing the stability of the fastener and other connecting parts such as external bolts;

[0029] (3) The riveted connection provides good anti-vibration properties, ensuring that the connection is not easy to loosen during long-term use. The design of the supporting flange and the riveted part effectively controls the pressure on the multilayer board during the riveting process, preventing deformation or damage to the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes and are used to help understand the present invention. They do not specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances. In the drawings:

[0031] Figure 1 It is a schematic diagram of the structure of the fastener of the present invention;

[0032] Figure 2 is a cross-sectional view of the fastener of the present invention;

[0033] Figure 3 An exploded view of the fastener and the plate of the present invention;

[0034] Figure 4 It is a schematic diagram of riveting and fixing of the fastener of the present invention;

[0035] Figure 5 It is a schematic diagram of riveting and fixing of the fastener of the present invention;

[0036] Figure 6 It is a schematic diagram of riveting fixation of the fastener described in the present invention.

[0037] In the figure: 1, body; 11, first end; 12, second end; 13, riveted portion; 14, threaded extension portion; 2, supporting flange; 3, groove; 4, internal thread; 5, knurled wheel; 6, plate; 61, through hole; 7, riveted piece; 71, protrusion. DETAILED DESCRIPTION

[0038] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" 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 invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. 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 invention can be understood according to specific circumstances. The following describes an implementation method of the present invention based on its overall structure.

[0040] like Figures 1 to 6 As shown, the present invention discloses a fastener with increased thread length, comprising:

[0041] A body 1, wherein the body 1 is a hollow columnar structure, and the body 1 has a first end 11 and a second end 12 along its axial direction;

[0042] A supporting flange 2, wherein the supporting flange 2 is arranged at a middle position of the main body 1 along the axial direction of the main body 1;

[0043] The first end 11 of the body 1 extends a riveted portion 13 and a threaded extension portion 14 in the axial direction, and a groove 3 is provided between the riveted portion 13 and the threaded extension portion 14;

[0044] An internal thread 4 is disposed on the inner side of the body 1 , and the internal thread 4 extends from the second end 12 of the body 1 to the thread extension portion 14 .

[0045] With the above structure, the fastener adds a threaded extension portion 14 to the first end 11 of the body 1 so that the internal thread 4 extends from the second end 12 of the body 1 to the threaded extension portion 14, thereby increasing the length of the thread and improving the thread engagement strength of the fastener to meet higher mechanical load requirements.

[0046] Specifically, the outer surface of the main body 1 may be provided with anti-slip grooves or coated with an anti-corrosion coating to enhance the grip during installation and extend the service life. The support flange 2 is an annular flange structure that can enhance the axial support force of the main body 1. An internal thread 4 is provided on the inner side of the main body 1, and the internal thread 4 extends from the second end 12 of the main body 1 to the thread extension 14. The above structure can improve the locking ability of the fastener when it cooperates with the external bolt and ensure the stability of the connection. Similar fasteners in the prior art adopt the method of pull rivets, but the deformation area of ​​the pull rivet fastener cannot be provided with threads, otherwise the screw will not be able to pass through the threads after the fastener is deformed. Moreover, since the deformation of the pull rivet fastener is large, its strength cannot be too high, so it is difficult to set a longer threaded connection in a limited space, which ultimately affects the reliability of the fastener connection.

[0047] Preferably, an annular knurling wheel 5 with a regular pattern is axially arranged on the outer surface of the main body 1. The pattern of the knurling wheel 5 can be linear, cross-net or corrugated, and the specific pattern can be selected according to needs. In this embodiment, the knurling wheel 5 is composed of a polygonal structure arranged circumferentially. The knurling wheel 5 is located on the side of the support flange 2 facing the first end 11, that is, close to the riveting portion 13, which helps to provide friction during the installation operation. Due to the pattern design on the surface of the knurling wheel 5, its friction can be significantly increased, which is convenient for providing friction when the workpiece is fixed later to prevent slipping. By increasing the circumferential friction, the knurling wheel 5 can further prevent the risk of loosening after installation.

[0048] In this embodiment, there is a height difference between the end of the riveting part 13 and the threaded extension part 14. The plane where the end of the riveting part 13 is located is higher than the plane where the end of the threaded extension part 14 is located, forming an axial height difference. The threaded extension part 14 is located on the inner side of the riveting part 13, which is convenient for subsequent riveting operations and avoids interference or damage to the threaded extension part 14. The above structure can ensure that the riveting is fully applied to the riveting part 13, the riveting deformation is uniform, and the connection reliability after riveting is improved.

[0049] In this embodiment, the fastener is made of a plastic metal material. When the fastener is subjected to an external force, it can be riveted without breaking. It can also reduce damage to the connection parts caused by fatigue and enhance the durability of the fastener.

[0050] The present invention also discloses a fastening system for increasing the length of a thread, comprising:

[0051] A fastener, the fastener comprising a body 1 and a supporting flange 2, the body 1 being a hollow columnar structure, the body 1 having a first end 11 and a second end 12 along its axial direction, the supporting flange 2 being arranged at a middle position of the body 1 along the axial direction of the body 1, the first end 11 of the body 1 extending a riveted portion 13 and a threaded extension portion 14 along the axial direction, a groove 3 being arranged between the riveted portion 13 and the threaded extension portion 14, an internal thread 4 being arranged on the inner side of the body 1, the internal thread 4 extending from the second end 12 of the body 1 to the threaded extension portion 14;

[0052] A plate 6, the plate 6 being at least one piece, and the plate 6 being provided with a through hole 61 matching the body 1 of the fastener;

[0053] The rivet piece 7 includes two protrusions 71 for riveting the fastener, and the groove 3 can accommodate the protrusions 71, so that the rivet piece 7 can rivet and fix the riveted portion 13.

[0054] With the above structure, the main body 1 is a hollow columnar structure having a first end 11 and a second end 12. The first end 11 extends outwardly to form a rivet portion 13 and a threaded extension portion 14, and a support flange 2 is provided in the middle position to enhance the stability of the structure. The internal thread 4 extends from the second end 12 to the threaded extension portion 14, providing a longer thread length to enhance the connection strength. The groove 3 is located between the rivet portion 13 and the threaded extension portion 14, and is designed to accommodate the protrusion 71 of the rivet 7. A through hole 61 matching the fastener body 1 is provided on the plate 6 to ensure that the fastener can be accurately installed. The rivet 7 includes two protrusions 71 for riveting the fastener. The protrusion 71 can be inserted into the groove 3 of the fastener body 1, and the fastener is riveted and fixed to the plate 6 by squeezing the rivet portion 13.

[0055] Specifically, the plates 6 are placed overlappingly, and the first end 11 of the body 1 of the fastener can pass through the through hole 61 on the plate 6. A support flange 2 is provided in the middle of the body 1. The diameter of the support flange 2 is larger than the diameter of the through hole 61 and cannot pass through the plate 6. Therefore, the support flange 2 is tightly attached to and abuts against the end surface of the plate 6. The protrusion 71 of the rivet 7 is inserted into the groove 3, and the rivet portion 13 is fixed to the side of the plate 6 facing the first end 11 through a mechanical flipping action to complete the fixing of the fastener. Since the internal thread 4 extends to the thread extension portion 14, the overall thread length is increased, thereby providing greater connection force and stability.

[0056] Preferably, in the fastening system, the contact surface between the protrusion 71 on the rivet 7 and the groove 3 in the fastener body 1 is designed to be a slope. The slope can effectively squeeze the protrusion 71 toward the outside of the fastener body 1 during the riveting process, thereby forming a fastened connection. The design of the inclined protrusion 71 of the rivet 7 makes the riveting operation easier, and the fastening is achieved through the extrusion force without the need for complicated tools or operations, saving installation time and cost. The plate 6 is made of copper or aluminum, which have good thermal conductivity, strength and machinability. The choice of copper and aluminum materials also makes the fastening system have better corrosion resistance and weight advantages, and is suitable for a variety of industrial environments.

[0057] Furthermore, the plane where the end of the internal thread 4 faces the first end 11 of the body 1 is located is not lower than the plane where the side of the plate 6 faces the first end 11 of the body 1. The above structure can ensure that the end position of the internal thread 4 is higher than or consistent with the plane of the plate 6, and the length of the internal thread 4 is increased as much as possible, so that the thread contact is more firm and the stability of the fastening connection is improved.

[0058] The present invention also discloses an operating method of a fastening system for increasing thread length, comprising the following steps:

[0059] A fastener is provided, the fastener comprising a body 1 and a supporting flange 2, the body 1 being a hollow columnar structure, the body 1 having a first end 11 and a second end 12 along its axial direction, the supporting flange 2 being arranged at a middle position of the body 1 along the axial direction of the body 1, the first end 11 of the body 1 extending a riveted portion 13 and a threaded extension portion 14 along the axial direction, a groove 3 being arranged between the riveted portion 13 and the threaded extension portion 14, an internal thread 4 being arranged on the inner side of the body 1, the internal thread 4 extending from the second end 12 of the body 1 to the threaded extension portion 14;

[0060] Providing a plate 6, wherein the plate 6 is provided with a through hole 61 through which the body 1 of the fastener can pass;

[0061] The plate 6 is sleeved from the first end 11 of the fastener, and the side of the plate 6 facing away from the first end 11 of the fastener is in close contact with the support flange 2;

[0062] The protrusion 71 of the rivet 7 is aligned with the groove 3 of the fastener, and the rivet 7 is pressed so that the protrusion 71 is squeezed with the rivet portion 13, and the rivet portion 13 is turned outward to the outside of the main body 1, thereby being riveted and fixed to the plate 6 sleeved outside the main body 1.

[0063] Specifically, an internal thread 4 is also provided inside the body 1, and after the fastener rivets the plate 6, the external bolts or other connecting parts can be closely matched with it, thereby enhancing the reliability of the connection. A support flange 2 is also provided in the middle position of the body 1. The support flange 2 is an annular structure, which can cooperate with the deformed riveted portion 13 to fix multiple plates 6 and disperse the local stress applied to the contact surface between the support flange 2 and the plate 6.

[0064] A riveting portion 13 is provided at the first end 11 of the fastener. The riveting portion 13 is higher than the plane height of the plates 6 to be connected, ensuring accurate alignment of the plates 6 during installation, allowing smooth riveting and reducing operational errors.

[0065] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, 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 fall within the protection scope of the present invention.

Claims

1. A fastener with increased thread length, characterized in that: include: A body, the body being a hollow columnar structure, and having a first end and a second end along its axial direction; A supporting flange, wherein the supporting flange is arranged at a middle position of the main body along the axial direction of the main body; A riveted portion and a threaded extension portion are extended axially from the first end of the body, and a groove is provided between the riveted portion and the threaded extension portion; An internal thread is disposed on the inner side of the body, and the internal thread extends from the second end of the body to the thread extension portion.

2. The fastener with increased thread length according to claim 1, characterized in that: A knurling wheel is provided on the outer circumference of the body, the knurling wheel is adjacent to the supporting flange, and the knurling wheel is located on a side of the supporting flange facing the first end of the body.

3. The fastener with increased thread length according to claim 1, characterized in that: The plane where the end of the riveting portion is located is higher than the plane where the end of the threaded extension portion is located.

4. The fastener with increased thread length according to claim 2, characterized in that: The knurling wheel is composed of polygonal structures arranged circumferentially.

5. The fastener with increased thread length according to claim 1, characterized in that: The fastener is made of metal with plasticity.

6. A fastening system for increasing thread length, characterized in that: include: A fastener, the fastener comprising a body and a support flange, the body being a hollow columnar structure, the body having a first end and a second end along its axial direction, the support flange being arranged at a middle position of the body along the axial direction of the body, the first end of the body extending a riveted portion and a threaded extension portion along the axial direction, a groove being arranged between the riveted portion and the threaded extension portion, an internal thread being arranged on the inner side of the body, the internal thread extending from the second end of the body to the threaded extension portion; A plate, the plate being at least one, and the plate being provided with a through hole matching the body of the fastener; The rivet piece includes two protrusions for riveting the fastener, and the groove can accommodate the protrusions, so that the rivet piece can rivet and fix the riveted part.

7. The fastening system for increasing thread length according to claim 6, characterized in that: The surface where the protrusion contacts the groove is an inclined surface, and the protrusion presses the riveted portion toward the outside of the body, so that the riveted portion is riveted and fixed to the plate.

8. The fastening system for increasing thread length according to claim 6, characterized in that: The plate is made of copper or aluminum.

9. The fastening system for increasing thread length according to claim 6, characterized in that: The plane where the end of the internal thread facing the first end of the body is located is not lower than the plane where the side of the plate facing the first end of the body is located.

10. A method for operating a fastening system for increasing thread length, characterized in that: The following steps are involved: A fastener is provided, the fastener comprising a body and a support flange, the body being a hollow columnar structure, the body having a first end and a second end along its axial direction, the support flange being arranged at a middle position of the body along the axial direction of the body, the first end of the body extending a riveted portion and a threaded extension portion along the axial direction, a groove being arranged between the riveted portion and the threaded extension portion, an internal thread being arranged on the inner side of the body, the internal thread extending from the second end of the body to the threaded extension portion; Providing a plate, wherein the plate is provided with a through hole through which the body of the fastener can pass; The plate is sleeved from the first end of the fastener, and a side of the plate facing away from the first end of the fastener is in close contact with the support flange; The protrusion of the rivet is matched with the groove of the fastener, and the rivet is pressed so that the protrusion is squeezed with the rivet part, and the rivet part is turned outward to the outside of the main body, so as to be riveted and fixed with the plate sleeved outside the main body.

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