A robustly connected blind rivet

Abstract

This invention proposes a press-fit stud for a stable connection, comprising a nut head and a stud. The stud has an internal thread on its inner side and an internal groove on its side. A partition plate is fixedly connected to the stud, and several teeth are fixedly connected to the nut head of the partition plate. The advantages of this invention are: Pressurization is applied using a press-fit device, causing the sheet metal to deform according to the structure of the press-fit stud. The internal groove, with its concave structure, causes the sheet metal to deform and form a protruding structure, which then engages with the internal groove, achieving vertical constraint between the sheet metal and the press-fit stud. After the sheet metal deforms under pressure, a protrusion forms below the partition plate, and under the clamping of the partition plate, a second vertical constraint is formed, making the vertical connection more stable. The teeth form an interlocking structure after the sheet metal deforms, further stabilizing the connection between the sheet metal and the press-fit stud. Multiple vertical constraints make the connection between the press-fit stud and the sheet metal more stable and secure, and its applicability wider.

Description

Technical Field

[0001] This utility model relates to the field of press-fit stud technology, and in particular to a press-fit stud for a stable connection. Background Technology

[0002] A press-fit stud (also known as a press-fit nut stud) is a fastener that is pressed into a pre-drilled hole in a thin sheet using a press machine. Its core function is to create a reliable internal threaded hole in a thin sheet or lightweight material for securing screws or bolts. Its design integrates a nut head with a cylindrical threaded section, and a relief groove in the middle allows for plastic deformation during riveting, ensuring a tight engagement between the stud and the sheet metal and preventing loosening.

[0003] Traditional press-fit nuts typically have knurled teeth and guide grooves at one end. After being pressed into a pre-positioned position on the shelf through the knurled teeth, the periphery of the hole deforms to achieve riveting and locking. However, under complex stress environments or high load conditions, insufficient riveting locking strength, loosening, or breakage are common problems, especially with limited vertical constraints, which can lead to connection failure under large vertical loads. Therefore, an improved press-fit stud with a more robust connection is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a press-fit stud for a stable connection, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides a press-fit stud for a stable connection, including a nut head and a stud. The stud has an internal thread on its inner side and an internal groove on its side. A partition is fixedly connected to the stud. The nut head of the partition has several teeth fixedly connected to it, and the nut head has several protrusions fixedly connected to it. The top of the internal groove is provided with several reinforcing keys that are fixedly connected to the stud.

[0007] Preferably, in any of the above embodiments, a through hole is provided at the middle position of the nut head, and the inner groove adopts an annular structure.

[0008] The above technical solution employs a nut head that mates with a stud to form the basic structure of a press-fit stud. The nut head is secured to one side of the sheet metal, while the stud passes through a through hole in the sheet metal and engages with its internal thread to connect to external components. A through hole is located in the center of the threaded head, allowing the user to observe the interior of the stud through the nut head. An internal groove is formed on the stud, providing space for the sheet metal to deform. The groove's concave structure allows the sheet metal to deform and form a protruding structure, which then engages with the groove, achieving vertical constraint between the sheet metal and the press-fit stud. The internal groove uses a ring structure, making this vertical constraint more balanced and stable.

[0009] Preferably, in any of the above embodiments, the partition has a cylindrical structure, and the diameter of the partition is larger than the diameter of the stud.

[0010] The above technical solution involves installing a partition on the stud, which divides the space on the stud and forms a recessed area below it. After the plate is deformed under pressure, a protrusion is formed below the partition, which, with the clamping of the partition, creates two vertical constraints, making the vertical connection more stable.

[0011] Preferably, the top surface of the partition is provided with an arc-shaped edge, and the toothed opening adopts a right-angled trapezoidal structure.

[0012] The above technical solution involves: an arc-shaped edge on the top surface of the partition plate to allow for smoother deformation of the plate. The teeth form an interlocking structure after deformation, thus making the connection between the plate and the press-fit stud more stable. The teeth adopt a right-angled trapezoidal structure, causing the plate to form a corresponding inclined structure after deformation, interlocking not only horizontally but also vertically, making the connection more reliable.

[0013] Preferably, of any of the above embodiments, a plurality of the teeth are evenly arranged circumferentially on the side of the stud, and a plurality of the protrusions are evenly arranged circumferentially on the nut head.

[0014] The above technical solution employs a series of evenly distributed teeth to ensure a more balanced and stable connection between the sheet metal and the press-fit stud after deformation under pressure. Protrusions are used to reinforce the connection between the sheet metal and the press-fit stud. The evenly distributed circumference of these protrusions further enhances the uniform and balanced reinforcement effect.

[0015] Preferably, in any of the above solutions, the protrusion adopts an inverted isosceles trapezoidal structure, and the corners of the protrusion are all rounded.

[0016] The above technical solution employs an inverted isosceles trapezoidal structure for the protrusions, which forms a corresponding structure after the sheet is compressed, thereby creating a vertical tie-in effect and assisting the rivet studs in tying the sheet together. The rounded corners of the protrusions improve the smoothness of sheet deformation.

[0017] Preferably, in any of the above schemes, the reinforcing key adopts an inverted triangular structure, and several reinforcing keys are evenly arranged on the top of the inner groove.

[0018] The above technical solution involves installing reinforcing keys at the top of the inner groove to strengthen the connection between the rivet stud and the plate. The reinforcing keys employ an inverted triangular mechanism, allowing them to form an interlocking structure on the top surface of the plate, resulting in more stable constraint. The evenly distributed arrangement of several reinforcing keys further enhances the balanced and stable constraint.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. This robustly connected press-fit stud utilizes a structure incorporating recesses, partitions, teeth, protrusions, and reinforcing keys. During use, a sheet metal is fitted onto the stud, and pressure is applied using a press-fit device. Under pressure, the sheet metal deforms according to the stud's structure. The recessed structure causes the deformed sheet metal to form a protruding structure, which then engages with the recess, providing vertical constraint between the sheet metal and the stud. After deformation, a protrusion forms below the partition, creating a second layer of vertical constraint under the partition's hold, further stabilizing the vertical connection. The teeth, after deformation, create an interlocking structure, further enhancing the connection between the sheet metal and the stud. These multiple vertical constraints result in a more stable and secure connection between the stud and the sheet metal, expanding its applicability.

[0021] 2. The securely connected press-fit stud features a ring-shaped inner groove, enhancing the balance and stability of the vertical constraint. Several protrusions are evenly distributed around the circumference, further ensuring a uniform and balanced reinforcement effect. These protrusions employ an inverted isosceles trapezoidal structure, forming a corresponding structure under pressure on the sheet metal, thus creating a vertical tie and assisting the press-fit stud in binding the sheet metal. The rounded corners of the protrusions improve the smoothness of sheet metal deformation. A reinforcing key is located at the top of the inner groove to strengthen the connection between the press-fit stud and the sheet metal. This reinforcing key uses an inverted triangular mechanism, allowing it to interlock with the sheet metal at the top, resulting in greater constraint stability. The evenly distributed reinforcing keys further enhance the balanced and stable constraint.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2This is a schematic diagram of the working structure of this utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0027] In the diagram: 1-nut head, 2-stud, 3-internal thread, 4-groove, 5-partition, 6-tooth, 7-protrusion, 8-arc edge, 9-reinforcing key, 10-plate, 11-through hole. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figures 1-3 As shown, this utility model includes a nut head 1 and a stud 2. The stud 2 has an internal thread 3 on its inner side and an internal groove 4 on its side. A partition 5 is fixedly connected to the stud 2. A plurality of teeth 6 are fixedly connected to the partition nut head 1. A plurality of protrusions 7 are fixedly connected to the nut head 1. A plurality of reinforcing keys 9 fixedly connected to the stud 2 are provided on the top of the internal groove 4.

[0031] Example 1: A through hole is provided in the middle of the nut head 1, and the inner groove 4 adopts a ring structure. The nut head 1 and the stud 2 form the basic structure of the press-fit stud. The nut head 1 is stuck on one side of the plate 10, while the stud 2 passes through the through hole 11 opened on the plate 10 and engages with the internal thread 3 to achieve the connection to the external component. A through hole is provided in the middle of the thread head 1, allowing the user to observe the internal condition of the stud 2 through the nut head 1. An inner groove 4 is provided on the stud 2. The inner groove 4 provides space for the deformation of the plate 10, and its concave structure can be used to deform the plate 10 into a convex structure, which then gets stuck in the inner groove 4, achieving vertical constraint on the plate 10 and the press-fit stud. The inner groove 4 adopts a ring structure, making the vertical constraint more balanced and stable. The partition 5 adopts a cylindrical structure, and the diameter of the partition 5 is larger than the diameter of the stud 2. The partition 5 is set on the stud 2, which divides the space on the stud 2 and forms a recessed area below it. After the plate 10 is deformed by pressure, a protrusion is formed below the partition 5. Then, under the clamping of the partition 5, two vertical constraints are formed, making the vertical connection more stable.

[0032] Example 2: The top surface of the partition 5 is provided with an arc-shaped edge 8, and the toothed opening 6 adopts a right-angled trapezoidal structure. The arc-shaped edge 8 on the top surface of the partition 5 allows the plate 10 to deform more smoothly. The toothed opening 6 forms an interlocking structure after the plate 10 deforms, thus making the connection between the plate 10 and the press-fit stud more stable. The right-angled trapezoidal structure of the toothed opening 6 allows the plate 10 to form a corresponding inclined structure after deformation, engaging not only horizontally but also vertically, making the connection more reliable. Several toothed openings 6 are evenly arranged circumferentially on the side of the stud 2, and several protrusions 7 are evenly arranged circumferentially on the nut head 1. The even arrangement of several toothed openings 6 makes the connection between the plate 10 and the press-fit stud more balanced and stable after deformation under pressure. The protrusions 7 are used to strengthen the connection between the plate 10 and the press-fit stud. The even circumferential arrangement of several protrusions 7 makes the strengthening effect more uniform and balanced.

[0033] Example 3: The protrusion 7 adopts an inverted isosceles trapezoidal structure, and all corners of the protrusion 7 are rounded. The inverted isosceles trapezoidal structure of the protrusion 7 allows it to form a corresponding structure after the plate 10 is compressed, thus creating a vertical tie and assisting the rivet stud in tying the plate 10 together. The rounded corners of the protrusion 7 improve the smoothness of plate 10 deformation. The reinforcing key 9 adopts an inverted triangular structure, with several reinforcing keys 9 evenly arranged circumferentially on the top of the inner groove 4. The reinforcing keys 9 at the top of the inner groove 4 strengthen the connection between the rivet stud and the plate 10. The inverted triangular mechanism of the reinforcing keys 9 allows them to form an interlocking structure on the top surface of the plate 10, resulting in more stable constraint. The evenly arranged number of reinforcing keys 9 ensures a more balanced and stable constraint.

[0034] The working principle of this utility model is as follows:

[0035] S1. Fit the plate 10 onto the stud 2, apply pressure using the riveting device, and the plate 10 deforms according to the structure of the riveting stud after being pressed.

[0036] S2. The recessed groove 4 utilizes its concave structure to deform the plate 10, forming a protruding structure that then locks into the recessed groove 4, achieving vertical constraint on the plate 10 and the press-fit stud. After the plate 10 is deformed under pressure, a protrusion is formed below the partition 5, which, under the locking of the partition 5, forms two vertical constraints, making the vertical connection more stable.

[0037] S3 and tooth 6 form an interlocking structure after the plate 10 is deformed, thereby making the connection between the plate 10 and the press-fit stud more stable.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] 1. This robustly connected press-fit stud, through the inclusion of a groove 4, partition 5, teeth 6, protrusion 7, and reinforcing key 9, allows for a secure connection. In use, a sheet metal 10 is fitted onto the stud 2, and pressure is applied using a press-fit device. Under pressure, the sheet metal 10 deforms according to the structure of the press-fit stud. The groove 4, with its concave structure, causes the sheet metal 10 to deform and form a protruding structure, which then engages with the groove 4, providing vertical constraint between the sheet metal 10 and the press-fit stud. After the sheet metal 10 deforms under pressure, a protrusion forms below the partition 5, further securing it with the partition 5, creating a second layer of vertical constraint and enhancing the vertical connection. The teeth 6, after the sheet metal 10 deforms, form an interlocking structure, further stabilizing the connection between the sheet metal 10 and the press-fit stud. These multiple vertical constraints result in a more stable and robust connection between the press-fit stud and the sheet metal 10, expanding its applicability.

[0040] 2. The securely connected press-fit stud features a ring-shaped inner groove 4, enhancing the balance and stability of the vertical constraint. Several protrusions 7 are evenly arranged circumferentially, further balancing the reinforcement effect. The protrusions 7 are inverted isosceles trapezoids, forming a corresponding structure under pressure on the plate 10, thus creating a vertical tie and assisting the press-fit stud in binding the plate 10. The rounded corners of the protrusions 7 improve the smoothness of plate 10 deformation. A reinforcing key 9 is located at the top of the inner groove 4, strengthening the connection between the press-fit stud and the plate 10. The reinforcing key 9 uses an inverted triangular mechanism, allowing it to interlock with the plate 10 at its top, resulting in more stable constraint. The even arrangement of several reinforcing keys 9 ensures a more balanced and stable constraint.

Claims

1. A press-fit stud for secure connection, comprising a nut head (1) and a stud (2), wherein the stud (2) has an internal thread (3) on its inner side; characterized in that, The stud (2) has an inner groove (4) on its side. A partition (5) is fixedly connected to the stud (2). Several teeth (6) are fixedly connected to the nut head (1) of the partition. Several protrusions (7) are fixedly connected to the nut head (1). Several reinforcing keys (9) are fixedly connected to the stud (2) at the top of the inner groove (4).

2. The press-fit stud for a secure connection as described in claim 1, characterized in that: The nut head (1) has a through hole in the middle position, and the inner groove (4) adopts a ring structure.

3. The press-fit stud for a secure connection as described in claim 2, characterized in that: The partition (5) has a cylindrical structure and the diameter of the partition (5) is larger than the diameter of the stud (2).

4. The press-fit stud for a secure connection as described in claim 3, characterized in that: The top surface of the partition (5) is provided with an arc-shaped edge (8), and the toothed opening (6) adopts a right-angled trapezoidal structure.

5. The press-fit stud for a secure connection as described in claim 4, characterized in that: Several teeth (6) are evenly arranged on the side of the stud (2), and several protrusions (7) are evenly arranged on the nut head (1).

6. The press-fit stud for a secure connection as described in claim 5, characterized in that: The protrusion (7) adopts an inverted isosceles trapezoidal structure, and the corners of the protrusion (7) are all rounded.

7. The press-fit stud for a secure connection as described in claim 6, characterized in that: The reinforcing key (9) adopts an inverted triangular structure, and several reinforcing keys (9) are evenly arranged on the top of the inner groove (4).

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