Fastener capable of increasing thread length and fastening system

Abstract

The utility model discloses a fastener and a fastening system capable of increasing thread length, which comprise a body, the body is of a hollow columnar structure, and the body is provided with a first end and a second end along 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] This utility model relates to the field of connector technology, specifically to a fastener and fastening system for increasing thread length. Background Technology

[0002] Riveting is a mechanical connection method that involves inserting one end of a rivet or connector into a pre-drilled hole, and then using a special tool to fold or press the other end to secure it firmly to the material. For automotive conductive connections, compact fasteners play a crucial role in the industry. Simultaneously, the application of multi-layer conductive copper (or aluminum) plates is becoming increasingly common, making the search for a suitable fastening solution increasingly urgent.

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

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a fastener and fastening system with increased thread length, which increases the thread length of the fastening connector, enhances the connection strength of multilayer boards, and ensures the stability of the connector in multilayer structures.

[0005] Technical solution: This utility model discloses a fastener for increasing thread length, comprising:

[0006] The body is a hollow columnar structure, and the body has a first end and a second end along its axial direction;

[0007] A support flange is provided at the middle position of the body along the axial direction of the body.

[0008] The first end of the body extends axially to form a riveted portion and a threaded extension portion, and a groove is provided between the riveted portion and the threaded extension portion;

[0009] The inner side of the body is provided with an internal thread, which extends from the second end of the body to the thread extension.

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

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

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

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

[0014] This utility model also discloses a fastening system for increasing thread length, comprising:

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

[0016] The plate, wherein there is at least one plate, and the plate has through holes that match the body of the fastener;

[0017] A riveting component, comprising two protrusions for riveting the fastener, wherein the groove is capable of accommodating the protrusions, thereby enabling the riveting component to rivet and fix the riveted portion.

[0018] Furthermore, the surface of the protrusion that contacts the groove is an inclined surface, and the protrusion presses the riveting part toward the outside of the body, thereby riveting the riveting part to the plate.

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

[0020] Furthermore, the plane containing the end of the internal thread facing the first end of the body is not lower than the plane containing the side of the plate facing the first end of the body.

[0021] The beneficial effects of this utility model are as follows:

[0022] (1) By riveting the fasteners to the multi-layer board, a mechanical lock is formed, which provides stronger torsional and push-out resistance, can withstand larger loads, and makes the connection more stable;

[0023] (2) The internal thread extends to the thread extension portion, increasing the thread contact area and thus enhancing the stability of the fastener with other connecting parts such as external bolts;

[0024] (3) The riveting connection provides good vibration resistance and ensures that the connection is not easy to loosen during long-term use. The design of the support flange and the riveting part effectively controls the pressure on the multi-layer board during the riveting process and prevents the board from deforming or being damaged. Attached Figure Description

[0025] 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:

[0026] Figure 1 This is a schematic diagram of the structure of the fastener described in this utility model;

[0027] Figure 2 This is a cross-sectional view of the fastener described in this utility model;

[0028] Figure 3 This is an exploded view of the fastener and plate material described in this utility model;

[0029] Figure 4 This is a schematic diagram of the riveting and fixing of the fastener described in this utility model;

[0030] Figure 5 This is a schematic diagram of the riveting and fixing of the fastener described in this utility model;

[0031] Figure 6 This is a schematic diagram of the riveting and fixing of the fastener described in this utility model.

[0032] In the figure: 1. Body; 11. First end; 12. Second end; 13. Riveting part; 14. Thread extension part; 2. Support flange; 3. Groove; 4. Internal thread; 5. Knurled wheel; 6. Plate; 61. Through hole; 7. Riveting part; 71. Protrusion. Detailed Implementation

[0033] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0034] 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.

[0035] like Figures 1 to 6 As shown, this utility model discloses a fastener for increasing thread length, comprising:

[0036] Body 1, which is a hollow columnar structure, has a first end 11 and a second end 12 along its axial direction;

[0037] Support flange 2, which is arranged along the axial direction of the body 1 at the middle position of the body 1;

[0038] The first end 11 of the body 1 extends axially to form a riveting part 13 and a threaded extension part 14, and a groove 3 is provided between the riveting part 13 and the threaded extension part 14;

[0039] The inner side of the body 1 is provided with an internal thread 4, which extends from the second end 12 of the body 1 to the thread extension 14.

[0040] With the above structure, the fastener increases the thread length by adding a threaded extension 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 14, and at the same time improves the thread engagement strength of the fastener to meet higher mechanical load requirements.

[0041] Specifically, the outer surface of the body 1 may be provided with anti-slip texture or coated with an anti-corrosion coating to enhance the grip during installation and extend its service life. The support flange 2 has an annular flange structure, which can enhance the axial support force on the body 1. An internal thread 4 is provided on the inner side of the body 1, extending from the second end 12 of the body 1 to the thread extension 14. The above structure can improve the locking ability when the fastener is mated with the external bolt, ensuring the stability of the connection. Similar fasteners in the prior art use riveting, but the deformation area of ​​the riveted fastener cannot be threaded; otherwise, the screw will not be able to pass through the thread after the fastener deforms. Moreover, since the deformation of the riveted fastener is large, its strength cannot be too high, so it is difficult to set a long threaded connection in a limited space, which ultimately affects the reliability of the fastener connection.

[0042] Preferably, an annular knurling wheel 5 with a regular pattern is axially arranged on the outer surface of the body 1. The pattern of the knurling wheel 5 can be straight, cross-hatched, or wavy, and the specific pattern can be selected according to requirements. In this embodiment, the knurling wheel 5 is composed of polygonal structures arranged circumferentially. The knurling wheel 5 is located on the side of the support flange 2 facing the first end 11, that is, near the riveting part 13, which helps to provide friction during installation. Due to the pattern design on the surface of the knurling wheel 5, its friction can be significantly increased, which facilitates the provision of friction when fixing the workpiece and prevents slippage. By increasing the circumferential friction, the knurling wheel 5 can also further prevent the risk of loosening after installation.

[0043] In this embodiment, the end of the riveting portion 13 and the threaded extension portion 14 have a height difference. The plane where the end of the riveting portion 13 is located is higher than the plane where the end of the threaded extension portion 14 is located, forming an axial height difference. The threaded extension portion 14 is located inside the riveting portion 13, which facilitates subsequent riveting operations and avoids interference or damage to the threaded extension portion 14. The above structure ensures that the riveting action is fully applied to the riveting portion 13 during riveting, resulting in uniform riveting deformation and improving the reliability of the connection after riveting.

[0044] In this embodiment, the fastener is made of a malleable metal material. When the fastener is subjected to external force, it can undergo riveting deformation without breaking. It can also reduce the damage caused by fatigue in the connection part and enhance the durability of the fastener.

[0045] This utility model also discloses a fastening system for increasing thread length, comprising:

[0046] The fastener includes a body 1 and a support flange 2. The body 1 is a hollow columnar structure with a first end 11 and a second end 12 along its axial direction. The support flange 2 is disposed in the middle of the body 1 along the axial direction. The first end 11 of the body 1 extends axially to form a riveting part 13 and a threaded extension part 14. A groove 3 is provided between the riveting part 13 and the threaded extension part 14. An internal thread 4 is provided on the inner side of the body 1, extending from the second end 12 of the body 1 to the threaded extension part 14.

[0047] Plate 6, at least one plate 6, is provided with through holes 61 that match the body 1 of the fastener;

[0048] The riveting component 7 includes two protrusions 71 for riveting the fastener, and the groove 3 can accommodate the protrusions 71, so that the riveting component 7 can rivet and fix the riveting part 13.

[0049] With the above structure, the body 1 is a hollow columnar structure with a first end 11 and a second end 12. The first end 11 extends outward to form a riveting portion 13 and a threaded extension portion 14, with a supporting flange 2 located in the middle to enhance structural stability. An internal thread 4 extends from the second end 12 to the threaded extension portion 14, providing a longer thread length to enhance connection strength. A groove 3 is located between the riveting portion 13 and the threaded extension portion 14, designed to accommodate the protrusion 71 portion of the riveting component 7. The plate 6 has a through hole 61 that matches the fastener body 1 to ensure accurate installation of the fastener. The riveting component 7 includes two protrusions 71 for riveting the fastener. The protrusions 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 pressing the riveting portion 13.

[0050] Specifically, the plates 6 are stacked, and the first end 11 of the fastener body 1 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, so it cannot pass through the plate 6. Therefore, the support flange 2 is in close contact with and abuts against the end face of the plate 6. The protrusion 71 of the riveting part 7 is inserted into the groove 3, and the riveting part 13 is fixed to the side of the plate 6 facing the first end 11 by mechanical flipping action, thus completing the fastener fixing. Since the internal thread 4 extends to the thread extension part 14, the overall thread length is increased, thereby providing greater connection force and stability.

[0051] Preferably, in the fastening system, the contact surface between the protrusion 71 on the riveting part 7 and the groove 3 in the fastener body 1 is designed as an inclined surface. During the riveting process, the inclined surface effectively presses the protrusion 71 towards the outside of the fastener body 1 to form the riveting portion 13, thereby creating a secure connection. The inclined protrusion 71 design of the riveting part 7 simplifies the riveting operation, achieving fastening through pressure without the need for complex tools or operations, saving installation time and costs. The plate 6 is made of copper or aluminum, materials with good thermal conductivity, strength, and machinability. The choice of copper and aluminum also gives the fastening system better corrosion resistance and weight advantages, making it suitable for various industrial environments.

[0052] Furthermore, the plane containing the internal thread 4 facing the first end 11 of the body 1 is not lower than the plane containing the plate 6 facing the first end 11 of the body 1. The above structure ensures that the end position of the internal thread 4 is higher than or consistent with the plane of the plate 6, maximizing the length of the internal thread 4, making the threaded contact more secure, and improving the stability of the fastening connection.

[0053] The method of using the fastening system for increasing thread length described in this utility model is as follows:

[0054] A fastener is provided, the fastener comprising a body 1 and a support flange 2. The body 1 is a hollow columnar structure, the body 1 having a first end 11 and a second end 12 along its axial direction. The support flange 2 is disposed at the middle position of the body 1 along the axial direction of the body 1. The first end 11 of the body 1 extends axially to form a riveting portion 13 and a threaded extension portion 14. A groove 3 is provided between the riveting portion 13 and the threaded extension portion 14. An internal thread 4 is provided 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.

[0055] A plate 6 is provided, wherein the plate 6 is provided with a through hole 61 through which the body 1 of the fastener can pass;

[0056] The plate 6 is fitted onto 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.

[0057] The protrusion 71 of the riveting part 7 is aligned with the groove 3 of the fastener. The riveting part 7 is pressed down so that the protrusion 71 is pressed against the riveting part 13. The riveting part 13 is turned outward to the outside of the body 1, thereby riveting and fixing it to the plate 6 sleeved on the body 1.

[0058] Specifically, an internal thread 4 is provided inside the main body 1. After the fasteners rivet and fix the plate 6, they can also make the external bolts or other connecting parts fit tightly with it, thereby enhancing the reliability of the connection. A support flange 2 is also provided in the middle of the main body 1. The support flange 2 has a ring structure, which can cooperate with the deformed riveting part 13 to fix multiple plates 6 and distribute the local stress applied to the contact surface between the support flange 2 and the plate 6.

[0059] A riveting part 13 is provided at the first end 11 of the fastener. The riveting part 13 is higher than the plane height of the plate 6 to be connected, which ensures that the plate 6 can be accurately aligned during the installation process and can be riveted smoothly, reducing operational errors.

[0060] 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 fastener for increasing thread length, characterized in that, include: The body is a hollow columnar structure, and the body has a first end and a second end along its axial direction; A support flange is provided at the middle position of the body along the axial direction of the body. The first end of the body extends axially to form a riveted portion and a threaded extension portion, and a groove is provided between the riveted portion and the threaded extension portion; The inner side of the body is provided with an internal thread, which extends from the second end of the body to the thread extension.

2. The fastener for increasing thread length according to claim 1, characterized in that, A knurling wheel is provided on the outer circumferential side of the body, the knurling wheel is adjacent to the support flange, and the knurling wheel is located on the side of the support flange facing the first end of the body.

3. The fastener for increasing thread length according to claim 1, characterized in that, The plane at the end of the riveting part is higher than the plane at the end of the threaded extension part.

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

5. The fastener for increasing thread length according to claim 1, characterized in that, The fastener is made of a malleable metal.

6. A fastening system for increasing thread length, characterized in that, include: A fastener comprising a body and a support flange, the body being a hollow columnar structure having a first end and a second end along its axial direction, the support flange being disposed at the middle position of the body along the axial direction of the body, the first end of the body extending axially to form a riveted portion and a threaded extension portion, a groove being provided between the riveted portion and the threaded extension portion, an internal thread being provided on the inner side of the body, the internal thread extending from the second end of the body to the threaded extension portion; The plate, wherein there is at least one plate, and the plate has through holes that match the body of the fastener; A riveting component, comprising two protrusions for riveting the fastener, wherein the groove is capable of accommodating the protrusions, thereby enabling the riveting component to rivet and fix the riveted portion.

7. The fastening system for increasing thread length according to claim 6, characterized in that, The surface of the protrusion that contacts the groove is an inclined surface. The protrusion presses the riveting part against the outside of the body, thereby riveting the riveting part 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 containing the end of the internal thread facing the first end of the body is not lower than the plane containing the side of the plate facing the first end of the body.

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