Sealing all-stainless-steel drum-shaped self-plugging rivet

Abstract

The utility model discloses a leakproof all-stainless steel drum-shaped self-plugging rivet which comprises a rivet core, a rivet sleeve and a sealing ring, an inner space is formed in the middle of the rivet shell, and the rivet core is sleeved with the rivet shell through the inner space and connected with the rivet shell; the rivet core is provided with a first sealing area and a second sealing area, and the first sealing area and the second sealing area are arranged in the inner space. The inner space is provided with a third sealing area; when the rivet core is pulled, the rivet shell deforms, the rivet shell clamps two parts, the first sealing area is attached to the inner wall of the rivet shell, sealing is formed between the first sealing area and the rivet shell, the second sealing area is attached to the third sealing area, and sealing is formed between the second sealing area and the third sealing area. Therefore, the technical problems of poor sealing performance and poor waterproof and leakage-proof effects are solved.

Description

Technical Field

[0001] This utility model relates to the field of rivet technology, specifically a sealed all-stainless steel drum-shaped blind rivet. Background Technology

[0002] The structure of a rivet generally includes: a core and a shell, with the shell fitted onto the core;

[0003] Blind rivets, also known as pop rivets, are used to connect two parts with through holes. One end of the rivet core and the rivet shell are inserted into the through hole. Using a special rivet tool (such as a rivet gun), the other end of the rivet core is pulled, causing the rivet core to apply pressure to the rivet shell until the rivet shell deforms and the rivet core breaks into two pieces. One piece, together with the rivet shell, clamps the two parts together, while the other piece separates from the rivet shell. Due to their ease of installation and use, and good connection strength, they are widely used in industrial production fields such as vehicles, ships, aviation, construction, and special equipment manufacturing.

[0004] However, in actual use, there are still some shortcomings. When one section of the nail core clamps the two parts together with the nail shell, since the nail core and the nail shell are two separate parts, there is a gap after they are combined, resulting in poor sealing and poor waterproof and leak-proof performance. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a sealing all-stainless steel drum-shaped blind rivet to solve the technical problems of poor sealing performance and poor waterproof and leak-proof effect in the related technologies.

[0006] The technical solution to achieve the objective is: a sealed, all-stainless steel drum-shaped blind rivet, including:

[0007] Nail core;

[0008] And a nail shell, wherein the nail shell has an inner space in the middle, and the nail shell is fitted onto the nail core through the inner space and connected to the nail core;

[0009] The nail core has a first sealing area and a second sealing area, which are disposed within the inner space.

[0010] The inner space has a third sealed area;

[0011] When the nail core is pulled, the nail shell deforms and clamps the two parts. The first sealing area adheres to the inner wall of the nail shell, forming a seal between the nail shell and the first sealing area. The second sealing area adheres to the third sealing area, forming a seal between the second sealing area and the third sealing area.

[0012] Furthermore, the second sealing region is connected to one end of the first sealing region, forming a bend between them.

[0013] Furthermore: the first sealing area has a cylindrical structure;

[0014] The second sealing area is chamfered.

[0015] Furthermore, the third sealing area is chamfered, matching the shape of the second sealing area.

[0016] Furthermore: the nail core includes: a first core segment, which contacts the nail shell and is connected to the nail shell;

[0017] The second core segment has one end disposed in the inner space and the other end extending to the outside of the inner space;

[0018] And a broken connecting segment, connecting the first core segment and the second core segment. When the other end of the second core segment is pulled, the nail shell deforms, the second core segment breaks at the broken connecting segment and separates from the first core segment, and the first core segment remains in the inner space and is connected to the nail shell.

[0019] Furthermore: the first core segment, the second core segment, and the fractured connecting segment are integrally formed, with their center lines on the same straight line, and the outer diameter of the first core segment or the outer diameter of the second core segment is greater than the outer diameter of the fractured connecting segment.

[0020] Furthermore: the first core segment includes: the first sealing region and the second sealing region;

[0021] The first core segment further includes: a nail head disposed outside the inner space and abutting one end of the nail shell; a first transition segment connected between the nail head and the first sealing area and disposed in the inner space; and a second transition segment connected at one end to the second sealing area and at the other end to the broken connection segment.

[0022] The outer diameter of the nail core head is greater than the outer diameter of the first transition section, greater than the outer diameter of the first sealing area, greater than the outer diameter of the second transition section, and greater than the outer diameter of the broken connection section.

[0023] Furthermore: the second core segment has a cylindrical structure;

[0024] The second core segment has a wire drawing feature.

[0025] Furthermore: the nail shell includes: a shell sleeve with the inner space in the middle, one end of the shell sleeve contacting and abutting against the nail core;

[0026] And an outer eave, which is provided on the other end of the shell, wherein the outer diameter of the outer eave is larger than the outer diameter of the shell.

[0027] Furthermore: the outer wall of the casing has several internal grooves;

[0028] The outer eaves have a clearance area and a plane. The clearance area is located at the connection between the outer eaves and the shell, and the plane surrounds the clearance area.

[0029] The above technical solution has the following beneficial effects: the sealed all-stainless steel drum-shaped blind rivet has a rivet core and a rivet shell compared with related technologies; the rivet shell has an inner space in the middle, and the rivet shell is fitted onto the rivet core from the inner space and connected to the rivet core;

[0030] The nail core has a first sealing area and a second sealing area, and the inner space has a third sealing area;

[0031] When the nail core is pulled, the nail shell deforms and clamps the two parts. The first sealing area fits against the inner wall of the nail shell, forming a seal between the nail core and the nail shell. The second sealing area fits against the third sealing area, forming a seal between the second sealing area and the third sealing area, thus forming at least two seals. The sealing performance is relatively good, and the waterproof and leak-proof effect is relatively good.

[0032] This overcomes the technical problems of poor sealing and poor waterproofing and leak prevention, achieving a relatively good sealing and waterproofing and leak prevention effect, and is practical. Attached Figure Description

[0033] Figure 1 One of the structural diagrams showing the nail core and nail shell combined and then threaded onto a part;

[0034] Figure 2 This is a schematic diagram of the nail core structure;

[0035] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0036] Figure 4 This is a partial sectional view of the nail shell;

[0037] Figure 5 for Figure 1 A schematic diagram of the structure after the parts are clamped;

[0038] Figure 6 This is the second schematic diagram of the structure of the nail core and nail shell after they are combined and inserted into the part;

[0039] Figure 7 for Figure 6A schematic diagram of the structure after the parts are clamped;

[0040] In the diagram: 10. Nail core, 11. First sealing area, 12. Second sealing area, 13. Bend, 10-1. First core segment, 10-11. Nail core head, 10-12. First transition segment, 10-121. Annular part, 10-121-1. Arc-shaped concave area, 10-121-2. Protruding sharp corner, 10-13. Second transition segment, 10-2. Second core segment, 10-21. Wire drawing, 10-3. Broken connection segment, 20. Nail shell, 21. Inner space, 21-1. Third sealing area, 20-1. Shell, 20-2. Outer edge, 20-11. Inner groove, 20-21. Avoidance area, 20-22. Plane, 100. Part. Detailed Implementation

[0041] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings;

[0042] The all-stainless steel drum-shaped blind rivet solves the technical problems of poor sealing and waterproofing in related technologies. It can be manufactured and used, achieving relatively good sealing and waterproofing. The overall concept is as follows:

[0043] Implementation

[0044] like Figure 1 , Figure 5 , Figure 6 , Figure 7 As shown; Sealed all-stainless steel drum-shaped blind rivet, including:

[0045] 10 nail cores;

[0046] And a nail shell 20, wherein the nail shell 20 has an inner space 21 in the middle position, and the nail shell 20 is fitted onto the nail core 10 through the inner space 21 and connected to the nail core 10;

[0047] The nail core 10 has a first sealing region 11 and a second sealing region 12, and the first sealing region 11 and the second sealing region 12 are disposed within the inner space 21.

[0048] The inner space 21 has a third sealing area 21-1;

[0049] When the nail core 10 is pulled, the nail shell 20 deforms and clamps the two parts 100. The first sealing area 11 adheres to the inner wall of the nail shell 20, forming a seal between them. The second sealing area 12 adheres to the third sealing area 21-1, forming a seal between them. This creates at least two seals, resulting in relatively good sealing performance and better waterproofing and leak-proofing.

[0050] Another implementation method:

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown; in implementation, the second sealing area 12 is connected to one end of the first sealing area 11, forming a bend 13 between them; the bend 13 is provided so that the first sealing area 11 and the second sealing area 12 are not on the same surface, forming a corner, which is beneficial to improving the sealing performance;

[0052] The first sealing area 11 has a cylindrical structure and a relatively large area, which is conducive to fitting with the inner wall of the nail shell 20 and ensuring the sealing performance.

[0053] The second sealing area 12 is chamfered; the third sealing area 21-1 is chamfered and matches the shape of the second sealing area 12; the fit between the second sealing area 12 and the third sealing area 21-1 ensures the sealing performance.

[0054] Another implementation method:

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown; in practice, the nail core 10 and nail shell 20 are made of stainless steel, which has relatively high structural strength and is relatively aesthetically pleasing;

[0056] The nail core 10 includes: a first core segment 10-1, which contacts and connects to the nail shell 20; a second core segment 10-2, one end of which is disposed in the inner space 21 and the other end extends to the outside of the inner space 21; and a fracture connection segment 10-3, which connects the first core segment 10-1 and the second core segment 10-2. When the other end of the second core segment 10-2 is pulled, the nail shell 20 deforms, and the second core segment 10-2 breaks at the fracture connection segment 10-3 and separates from the first core segment 10-1. The first core segment 10-1 remains in the inner space 21 and is connected to the nail shell 20.

[0057] The first core segment 10-1, the second core segment 10-2, and the fracture connection segment 10-3 are integrally formed, with their center lines on the same straight line. The outer diameter of the first core segment 10-1 or the outer diameter of the second core segment 10-2 is larger than the outer diameter of the fracture connection segment 10-3, which is beneficial for processing and manufacturing. Furthermore, the fracture connection segment 10-3 can be easily broken, making it relatively convenient to use.

[0058] The first core segment 10-1 includes: a first sealing region 11 and a second sealing region 12; the first core segment 10-1 further includes: a nail head 10-11, disposed outside the inner space 21 and abutting against one end of the nail shell 20; a first transition segment 10-12, connecting the nail head 10-11 and the first sealing region 11, and disposed in the inner space 21; and a second transition segment 10-13, one end of which is connected to the second sealing region 12, and the other end of which is connected to the broken connection segment 10-3;

[0059] The outer diameter of the nail core head 10-11 is larger than the outer diameter of the first transition section 10-12, larger than the outer diameter of the first sealing area 11, larger than the outer diameter of the second transition section 10-13, and larger than the outer diameter of the broken connection section 10-3. The setting of the outer diameter makes the first core section 10-1 form a stepped structure, which is relatively aesthetically pleasing and facilitates connection with the nail shell 20.

[0060] The outer diameter of the nail head 10-11 is greater than or equal to the outer diameter of the shell 20-1. When the nail 10 is pulled, the nail head 10-11 can squeeze the shell 20-1, causing the shell 20-1 to deform.

[0061] The first transition section 10-12 includes at least two annular portions 10-121, which are spaced apart from each other.

[0062] The annular portion 10-121 includes: an arc-shaped concave region 10-121-1; and two protruding sharp corners 10-121-2. The protruding sharp corners 10-121-2 are symmetrically arranged on both sides of the arc-shaped concave region 10-121-1, and the outer diameter of the protruding sharp corners 10-121-2 is larger than the outer diameter of the first sealing region 11. The annular portion 10-121 is provided so that when the nail core 10 is inserted into the nail shell 20, the arc-shaped concave region 10-121-1 can reduce the contact area with the nail shell 20, and the protruding sharp corners 10-121-2 can fit tightly with the nail shell 20, thereby realizing the connection between the nail core 10 and the nail shell 20, and the assembly is relatively convenient.

[0063] The second core segment 10-2 is a cylindrical structure with a wire 10-21 on it. This facilitates the use of a special tool for rivets (such as a rivet gun) to pull the second core segment 10-2, while the first core segment 10-1 compresses the nail shell 20, causing the nail shell 20 to deform. The structure has relatively good reliability.

[0064] The nail shell 20 includes: a shell sleeve 20-1 with an inner space 21 in the middle, one end of the shell sleeve 20-1 contacting and abutting against the nail core 10; and an outer eave 20-2 disposed on the other end of the shell sleeve 20-1, the outer diameter of the outer eave 20-2 being larger than the outer diameter of the shell sleeve 20-1; the shell sleeve 20-1 and the outer eave 20-2 are integrally formed, and the shape is roughly a "T" shaped structure;

[0065] The outer wall of the shell 20-1 has a number of inner grooves 20-11. For example, the inner grooves 20-11 are arranged to form two annular grooves, and the annular grooves are spaced apart.

[0066] The outer eaves 20-2 have a clearance area 20-21 and a plane 20-22. The clearance area 20-21 is located at the connection between the outer eaves 20-2 and the shell 20-1, and the plane 20-22 surrounds the clearance area 20-21. The clearance area 20-21 reduces the probability of collision with the part 100 and facilitates the fit between the plane 20-22 and the part 100.

[0067] When the second core segment 10-2 is pulled by the rivet gun, the first core segment 10-1 compresses the shell 20-1, causing the shell 20-1 to deform and forming a single-drum expansion zone between the two annular grooves. The two parts 100 are clamped between the single-drum expansion zone and the outer edge 20-2. The second core segment 10-2 breaks at the fracture connection segment 10-3, and the first core segment 10-1 remains in the inner space 21. The first sealing area 11 adheres to the inner wall of the nail shell 20, forming a seal with the nail shell 20 (the first sealing area 11 and the inner wall of the nail shell 20 form two contact surfaces, and one contact surface is considered a seal, such as...). Figure 5 As shown in the figure, the second sealing area 12 and the third sealing area 21-1 are fitted together, and a seal is formed between the second sealing area 12 and the third sealing area 21-1 (the third seal), forming a triple seal, which has relatively good sealing performance and relatively good waterproof and leak-proof effect.

[0068] Another implementation method:

[0069] like Figure 6 , Figure 7 As shown; in practice, the outer wall of the shell 20-1 has a number of inner grooves 20-11, for example: the inner grooves 20-11 are arranged to form three annular grooves, and the annular grooves are spaced apart;

[0070] When the second core segment 10-2 is pulled by the rivet gun, the first core segment 10-1 compresses the shell 20-1, causing the shell 20-1 to deform and forming a double-drum expansion zone between the three annular grooves. The two parts 100 are clamped between the double-drum expansion zone and the outer edge 20-2. The second core segment 10-2 breaks at the fracture connection segment 10-3, and the first core segment 10-1 remains in the inner space 21. The first sealing area 11 adheres to the inner wall of the nail shell 20, forming a seal with the nail shell 20 (the first sealing area 11 and the inner wall of the nail shell 20 form three contact surfaces, each contact surface is considered a seal, such as...). Figure 7 As shown in the figure, the second sealing area 12 and the third sealing area 21-1 are fitted together, and a seal is formed between the second sealing area 12 and the third sealing area 21-1 (which is the fourth seal), forming four seals. The sealing performance is relatively good, and the waterproof and leak-proof effect is relatively good.

[0071] The number of annular grooves formed by the arrangement of inner grooves 20-11 is not limited to two or three. By changing the number of annular grooves and by changing the length of the shell 20-1, different forms such as three-drum expansion zones and four-drum expansion zones can be achieved.

[0072] Regarding part 100:

[0073] See Figure 1 , Figure 5 , Figure 6 , Figure 7 Part 100 is a common structure in the prior art, such as two plates with through holes. It is not the inventive point of this utility model, but is only used to better describe this utility model and facilitate understanding of the technical solution of this utility model. Those skilled in the art can directly and without doubt know how to set it up after seeing the disclosed content, without needing to put in creative effort or conduct excessive experiments.

[0074] The working principle is as follows: A sealing stainless steel drum-shaped blind rivet is placed in the through hole on part 100. The outer wall of the rivet shell 20 contacts the through hole. When the second core segment 10-2 is pulled by the rivet gun, the first core segment 10-1 squeezes the shell 20-1, causing the shell 20-1 to deform and form an expansion zone. The two parts 100 are clamped between the expansion zone and the outer edge 20-2. The second core segment 10-2 breaks at the fracture connection segment 10-3. The first core segment 10-1 remains in the inner space 21. The first sealing area 11 fits against the inner wall of the rivet shell 20, forming a seal with the rivet shell 20. The second sealing area 12 fits against the third sealing area 21-1, forming a seal between the second sealing area 12 and the third sealing area 21-1, achieving relatively good sealing performance and relatively good waterproof and leak-proof effect.

[0075] In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use;

[0076] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments;

[0077] The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.

Claims

1. A fully sealed stainless steel drum-shaped blind rivet, characterized in that, include: Nail core (10); And a nail shell (20), the nail shell (20) having an inner space (21) in the middle, the nail shell (20) being fitted onto the nail core (10) from the inner space (21) and connected to the nail core (10); The nail core (10) has a first sealing area (11) and a second sealing area (12), which are disposed within the inner space (21); The inner space (21) has a third sealed area (21-1); When the nail core (10) is pulled, the nail shell (20) deforms and clamps the two parts (100). The first sealing area (11) adheres to the inner wall of the nail shell (20) and forms a seal with the nail shell (20). The second sealing area (12) adheres to the third sealing area (21-1) and forms a seal with the third sealing area (21-1).

2. The sealing all-stainless steel drum-shaped blind rivet according to claim 1, characterized in that: The second sealing region (12) is connected to one end of the first sealing region (11) and forms a bend (13) between them.

3. The sealing all-stainless steel drum-shaped blind rivet according to claim 2, characterized in that: The first sealing area (11) has a cylindrical structure; The second sealing area (12) is chamfered.

4. The sealing all-stainless steel drum-shaped blind rivet according to claim 1 or 3, characterized in that: The third sealing region (21-1) is chamfered and matches the shape of the second sealing region (12).

5. The sealing all-stainless steel drum-shaped blind rivet according to claim 2, characterized in that: The nail core (10) includes: a first core segment (10-1) that contacts the nail shell (20) and is connected to the nail shell (20); The second core segment (10-2) has one end disposed in the inner space (21) and the other end extending to the outside of the inner space (21); And a broken connecting segment (10-3) connects the first core segment (10-1) and the second core segment (10-2). When the other end of the second core segment (10-2) is pulled, the nail shell (20) deforms, the second core segment (10-2) breaks at the broken connecting segment (10-3) and separates from the first core segment (10-1). The first core segment (10-1) remains in the inner space (21) and is connected to the nail shell (20).

6. The sealing all-stainless steel drum-shaped blind rivet according to claim 5, characterized in that: The first core segment (10-1), the second core segment (10-2), and the fractured connecting segment (10-3) are integrally formed, with their center lines on the same straight line, and the outer diameter of the first core segment (10-1) or the outer diameter of the second core segment (10-2) is greater than the outer diameter of the fractured connecting segment (10-3).

7. The sealing all-stainless steel drum-shaped blind rivet according to claim 6, characterized in that: The first core segment (10-1) includes: the first sealing region (11) and the second sealing region (12). The first core segment (10-1) further includes: a nail head (10-11), disposed outside the inner space (21) and abutting against one end of the nail shell (20); a first transition segment (10-12), connected between the nail head (10-11) and the first sealing area (11), disposed in the inner space (21); and a second transition segment (10-13), one end of which is connected to the second sealing area (12), and the other end of which is connected to the broken connection segment (10-3). The outer diameter of the nail core head (10-11) is greater than the outer diameter of the first transition section (10-12), greater than the outer diameter of the first sealing area (11), greater than the outer diameter of the second transition section (10-13), and greater than the outer diameter of the broken connection section (10-3).

8. The sealing all-stainless steel drum-shaped blind rivet according to claim 6, characterized in that: The second core segment (10-2) has a cylindrical structure; The second core segment (10-2) has a wire (10-21).

9. The sealing all-stainless steel drum-shaped blind rivet according to claim 1, characterized in that: The nail shell (20) includes: a shell sleeve (20-1) with the inner space (21) in the middle position, and one end of the shell sleeve (20-1) is in contact with and abuts against the nail core (10); And an outer eave (20-2) is provided on the other end of the shell (20-1), the outer diameter of the outer eave (20-2) being larger than the outer diameter of the shell (20-1).

10. The sealing all-stainless steel drum-shaped blind rivet according to claim 9, characterized in that: The outer wall of the shell (20-1) has several inner grooves (20-11). The outer eaves (20-2) have a clearance area (20-21) and a plane (20-22). The clearance area (20-21) is located at the connection between the outer eaves (20-2) and the shell (20-1). The plane (20-22) surrounds the clearance area (20-21).

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