High-reliability sealing pressing rivet nut and stud

Abstract

The invention discloses a high-reliability sealing pressing rivet nut and a stud. The pressing rivet nut comprises a nut body, a limiting ring, a dovetail boss and a gear ring. A threaded hole is formed in the nut body. The limiting ring is arranged at one end of the nut body, the upper end face of the limiting ring is a sealing face, an annular glue containing groove and an annular diffusion groove are formed in the sealing face, the diffusion groove is located on the inner side of the glue containing groove, and a plurality of overflow glue grooves communicated with the outside are formed in one side of the glue containing groove. A plurality of inner glue overflowing grooves communicated with the diffusion groove are formed in the other side of the first glue containing groove; the dovetail boss is arranged in the center of the sealing surface of the limiting ring; and the gear ring surrounds the lower part of the dovetail boss. Glue can overflow towards the diffusion groove and the outside in the rivet pressing process, and sealing failure caused by an air gap formed between the glue and the sealing face between the plates is prevented.

Description

Technical Field

[0001] This invention relates to the field of press-fit technology, specifically a high-reliability sealing press-fit nut and stud. Background Technology

[0002] Currently, power battery pack connectors, such as electrical and water pipe connectors, use numerous sealing fasteners at bolted connections. For thin sheet metal components, sealing rivet nuts are commonly used, with 10-20 used per battery pack depending on the number of connectors. Therefore, the sealing reliability of these nuts significantly impacts the battery pack's IP protection safety. The current industry standard for battery pack IP rating is IP68; failure at even one point will cause the entire pack's sealing system to fail. There are two main reasons for sealing failure: firstly, air gaps exist between the adhesive and the sheet metal at the rivet nut's sealing surface, leading to sealing failure; secondly, the riveting process fails, with the serrated edge not tightly bonded to the thin sheet. The traditional solution is to apply adhesive again at the joint between the rivet nut and the sheet metal after riveting. However, due to the limited space at the connector installation location, mechanized adhesive application or the use of a glue gun is not feasible, typically requiring manual application. This method is inefficient, costly, and inconsistent, failing to guarantee reliable sealing. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a highly reliable sealing press-fit nut or stud, thereby reducing the risk of seal failure.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A high-reliability sealing rivet nut includes: a nut body, a limiting ring, a dovetail boss, and a toothed ring. The nut body has a threaded hole inside.

[0005] A limiting ring is located at one end of the nut body. The upper surface of the limiting ring is a sealing surface. The sealing surface is provided with an annular glue-containing groove and a diffusion groove. The diffusion groove is located inside the glue-containing groove. One side of the glue-containing groove is provided with multiple overflow grooves that communicate with the outside. The other side of the first glue-containing groove is provided with multiple overflow grooves that communicate with the diffusion groove. A dovetail boss is located at the center of the sealing surface of the limiting ring. A toothed ring surrounds the lower part of the dovetail boss.

[0006] The toothed ring includes multiple stylated teeth, which are wedge-shaped with a pointed top and a wider bottom. Combined with the dovetail boss, this effectively deforms the sheet metal during the riveting process, ensuring proper riveting.

[0007] The bottom of the adhesive container is equipped with multiple vent holes. These vents allow air to escape during adhesive application, preventing air from accumulating in the container and creating air gaps between the adhesive and the container, which could lead to seal failure.

[0008] Both the overflow glue tank and the inner glue tank are arranged in a circular array; the bottom of both the overflow glue tank and the inner glue tank are provided with transition rounded corners.

[0009] Based on the same inventive concept, this application also discloses a high-reliability sealing press-fit stud, comprising a stud body, a limiting ring, a dovetail boss, and a toothed ring. The stud body has external threads.

[0010] A limiting ring is provided at one end of the stud body. The upper end face of the limiting ring is a sealing surface. The sealing surface is provided with an annular glue-containing groove and a diffusion groove. The diffusion groove is located inside the glue-containing groove. One side of the glue-containing groove is provided with multiple overflow glue grooves that communicate with the outside. The other side of the first glue-containing groove is provided with multiple overflow glue grooves that communicate with the diffusion groove. The dovetail boss is located at the center of the sealing surface of the limiting ring; the toothed ring surrounds the lower part of the dovetail boss.

[0011] The gear ring includes multiple floral teeth, which are wedge-shaped with a pointed top and a wider bottom.

[0012] The bottom of the adhesive container is equipped with multiple vent holes. These holes absorb air during adhesive application, preventing air from accumulating in the container and creating air gaps between the adhesive and the container, which could lead to seal failure.

[0013] Both the overflow glue tank and the inner glue tank are arranged in a circular array; the bottom of both the overflow glue tank and the inner glue tank are provided with transition rounded corners.

[0014] The beneficial effects of this invention are: during riveting, the adhesive container contains sealant, eliminating the need for applying sealant after riveting; the adhesive container has an inner overflow groove and an outer overflow groove on both sides, allowing the adhesive to overflow into the diffusion groove and the outside during the riveting process, preventing air gaps from forming between the adhesive and the sealing surface of the sheet metal, which could lead to sealing failure; the limiting ring and the sheet metal are riveted in place, reducing the problems of riveting failure or sealing failure. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is a front view of an embodiment; Figure 3 yes Figure 2 Sectional view along line AA; Figure 4 This is a structural schematic diagram of Example 2; Marking description: 1-Nut body, 2-Limiting ring, 3-Glue groove, 4-Diffusion groove, 5-Inner overflow groove, 6-Outer overflow groove, 7-Vent hole, 8-Dovetail boss, 9-Sprocket, 10-Stud body. Detailed Implementation

[0016] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Example

[0017] like Figure 1-3 As shown, a high-reliability sealing rivet nut includes: a nut body 1, a limiting ring 2, a dovetail boss 8, and a toothed ring. The nut body 1 has a threaded hole inside.

[0018] The limiting ring 2 is located at one end of the nut body 1. The upper end face of the limiting ring 2 is a sealing surface. The sealing surface is provided with an annular glue-containing groove 3 and a diffusion groove 4. The diffusion groove 4 is located inside the glue-containing groove 3. One side of the glue-containing groove 3 is provided with multiple overflow glue grooves 6 that communicate with the outside. The other side of the first glue-containing groove 3 is provided with multiple overflow glue grooves 5 that communicate with the diffusion groove 4. The dovetail boss 8 is located at the center of the sealing surface of the limiting ring 2; the toothed ring surrounds the lower part of the dovetail boss 8.

[0019] The gear ring includes multiple serrated teeth 9, which are wedge-shaped with a pointed top and a wider bottom. These teeth, in conjunction with the dovetail boss 8, allow the sheet metal to deform during the riveting process, ensuring the quality of the riveting.

[0020] The bottom of the adhesive container 3 is provided with multiple vent holes 7. These holes absorb air during adhesive application, preventing air from accumulating in the adhesive container 3 and creating air gaps between the adhesive and the container 3, which could lead to seal failure.

[0021] The overflow glue tank 6 and the inner overflow glue tank 5 are arranged in a circular array; the bottom of the overflow glue tank 6 and the inner overflow glue tank 5 are provided with transition rounded corners. Example

[0022] like Figure 4 As shown, a high-reliability sealing and riveting stud includes a stud body 10, a limiting ring 2, a dovetail boss 8, and a toothed ring. The stud body 10 has external threads.

[0023] The limiting ring 2 is located at one end of the stud body 10. The upper end face of the limiting ring 2 is a sealing surface. The sealing surface is provided with an annular glue-containing groove 3 and a diffusion groove 4. The diffusion groove 4 is located inside the glue-containing groove 3. One side of the glue-containing groove 3 is provided with a plurality of overflow glue grooves 6 that communicate with the outside. The other side of the first glue-containing groove 3 is provided with a plurality of internal overflow glue grooves 5 that communicate with the diffusion groove 4. The dovetail boss 8 is located at the center of the sealing surface of the limiting ring 2; the toothed ring surrounds the lower part of the dovetail boss 8.

[0024] The gear ring includes multiple flower teeth 9, which are wedge-shaped with a pointed top and a wide bottom.

[0025] The bottom of the adhesive container 3 is provided with multiple vent holes 7. These holes absorb air during adhesive application, preventing air from accumulating in the adhesive container 3 and creating air gaps between the adhesive and the container 3, which could lead to seal failure.

[0026] The overflow glue tank 6 and the inner overflow glue tank 5 are arranged in a circular array; the bottom of the overflow glue tank 6 and the inner overflow glue tank 5 are provided with transition rounded corners.

[0027] The process of press-fit nuts or press-fit studs is as follows: During the press-fitting process, the toothed ring is inserted into the plate to deform it. The dovetail boss 8 ensures the reliability of the connection after press-fitting. During the press-fitting process, due to the presence of the bottom vent hole 7 and the inner and outer overflow glue grooves 6 on both sides of the glue groove 3, air and excess glue can flow smoothly into the inner and outer overflow glue grooves, ensuring the sealing reliability of the glue inside the glue groove 3.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

[0029] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify 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 limiting the scope of protection of this invention.

Claims

1. A high-reliability sealing press-fit nut, characterized in that, include: Nut body (1), with a threaded hole inside; A limiting ring (2) is provided at one end of the nut body (1). The upper end face of the limiting ring (2) is a sealing surface. The sealing surface is provided with an annular glue-containing groove (3) and a diffusion groove (4). The diffusion groove (4) is located inside the glue-containing groove (3). One side of the glue-containing groove (3) is provided with multiple overflow glue grooves (6) that communicate with the outside. The other side of the first glue-containing groove (3) is provided with multiple overflow glue grooves (5) that communicate with the diffusion groove (4). Dovetail boss (8); located at the center of the sealing surface of the limiting ring (2); and A toothed ring surrounds the lower part of the dovetail boss (8).

2. The high-reliability sealing rivet nut according to claim 1, characterized in that: The gear ring includes multiple flower teeth (9), which are wedge-shaped with a pointed top and a wide bottom.

3. The high-reliability sealing rivet nut according to claim 1, characterized in that: The bottom of the adhesive container (3) is provided with multiple vent holes (7).

4. The high-reliability sealing rivet nut according to claim 1, characterized in that: The overflow glue tank (6) and the inner overflow glue tank (5) are arranged in a circular array; the bottom of the overflow glue tank (6) and the inner overflow glue tank (5) are provided with transition rounded corners.

5. A high-reliability sealing press-fit stud, characterized in that: The stud body (10) has external threads; A limiting ring (2) is provided at one end of the stud body (10). The upper end face of the limiting ring (2) is a sealing surface. The sealing surface is provided with an annular glue-containing groove (3) and a diffusion groove (4). The diffusion groove (4) is located inside the glue-containing groove (3). One side of the glue-containing groove (3) is provided with multiple overflow glue grooves (6) that communicate with the outside. The other side of the first glue-containing groove (3) is provided with multiple overflow glue grooves (5) that communicate with the diffusion groove (4). Dovetail boss (8); located at the center of the sealing surface of the limiting ring (2); and A toothed ring surrounds the lower part of the dovetail boss (8).

6. The high-reliability sealing rivet nut according to claim 5, characterized in that: The gear ring includes multiple flower teeth (9), which are wedge-shaped with a pointed top and a wide bottom.

7. The high-reliability sealing rivet nut according to claim 5, characterized in that: The bottom of the adhesive container (3) is provided with multiple vent holes (7).

8. The high-reliability sealing rivet nut according to claim 5, characterized in that: The overflow glue tank (6) and the inner overflow glue tank (5) are arranged in a circular array; the bottom of the overflow glue tank (6) and the inner overflow glue tank (5) are provided with transition rounded corners.

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