Three-step rivet nut

Abstract

The utility model discloses a three-step rivet nut which comprises a baffle ring, a first step portion, a second step portion and a third step portion, the bottom of the baffle ring is connected with the first step portion, the bottom of the first step portion is connected with the second step portion, and the bottom of the second step portion is connected with the third step portion. The first step portion protrudes out of the second step portion, the second step portion protrudes out of the third step portion, a threaded hole is formed in the third step portion, a smooth through hole is formed in the baffle ring in a penetrating mode, the through hole penetrates to the first step portion and the second step portion, and the through hole is communicated with the threaded hole. The nut is arranged to be of a three-step structure, the rivet nut can be attached more tightly when installed, the first step portion can be embedded into materials better, a firmer connecting point is formed, external liquid is prevented from leaking, and the waterproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of rivet nuts. Background Art

[0002] In the production process of new energy vehicle battery packs, rivet nuts are mainly installed on the sealing surface of the box frame to achieve mechanical connection between the box and the upper cover. They can also be installed on the bottom plate of the box cavity to achieve connection between the module or other components and the box. Since the material of the battery pack box is often thin, traditional welding methods may cause problems such as weld penetration or thread slippage. Rivet nuts can solve these problems well and achieve threaded connection between thin plates and other components.

[0003] After the existing new energy vehicle battery pack rivet nuts are installed, the nuts cannot fit tightly with the box, causing external liquids to easily penetrate in. Summary of the Invention

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a three-step rivet nut that can solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model proposes a three-step rivet nut, comprising a retaining ring, a first step portion, a second step portion and a third step portion, the bottom of the retaining ring is connected to the first step portion, the bottom of the first step portion is connected to the second step portion, the bottom of the second step portion is connected to the third step portion, the first step portion protrudes from the second step portion, the second step portion protrudes from the third step portion, a threaded hole is provided in the third step portion, a smooth through hole is penetrated through the retaining ring, the through hole penetrates to the first step portion and the second step portion, and the through hole is connected to the threaded hole.

[0006] Preferably, the second step portion is longer than the first step portion.

[0007] Preferably, the threaded hole is a blind hole, and a bottom sealing plate is provided at the bottom of the third step portion.

[0008] Preferably, the first step portion, the second step portion and the third step portion are all cylindrical.

[0009] The beneficial effects of the utility model are as follows: by arranging the nut into a three-step structure, the rivet nut can form a tighter fit during installation, and the first step portion can be better embedded in the material to form a more secure connection point, preventing external liquid from leaking in and achieving a waterproof effect.

[0010] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a main sectional view of the present utility model.

[0013] In the figure: 1- retaining ring, 2- first step portion, 3- second step portion, 4- third step portion, 5- threaded hole, 6- through hole. DETAILED DESCRIPTION

[0014] See Figure 1 、 Figure 2 , a three-step rivet nut, comprising a retaining ring 1, a first step portion 2, a second step portion 3 and a third step portion 4, the bottom of the retaining ring 1 is connected to the first step portion 2, the bottom of the first step portion 2 is connected to the second step portion 3, the bottom of the second step portion 3 is connected to the third step portion 4, the first step portion 2 protrudes from the second step portion 3, the second step portion 3 protrudes from the third step portion 4, a threaded hole 5 is provided in the third step portion 4, the retaining ring 1 is penetrated by a smooth through hole 6, the through hole 6 penetrates to the first step portion 2 and the second step portion 3, the through hole 6 is connected to the threaded hole 5, the length of the second step portion 3 is greater than the first step, the threaded hole 5 is a blind hole, and the bottom of the third step portion 4 is provided with a bottom sealing plate, the first step portion 2, the second step portion 3 and the third step portion 4 are all cylindrical.

[0015] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. A three-step rivet nut, characterized by: The invention comprises a retaining ring (1), a first step portion (2), a second step portion (3) and a third step portion (4), wherein the bottom of the retaining ring (1) is connected to the first step portion (2), the bottom of the first step portion (2) is connected to the second step portion (3), the bottom of the second step portion (3) is connected to the third step portion (4), the first step portion (2) protrudes from the second step portion (3), the second step portion (3) protrudes from the third step portion (4), a threaded hole (5) is provided in the third step portion (4), and a smooth through hole (6) is provided through the retaining ring (1), the through hole (6) penetrates the first step portion (2) and the second step portion (3), and the through hole (6) is connected to the threaded hole (5).

2. The three-step rivet nut according to claim 1, characterized in that: The second step portion (3) is longer than the first step portion.

3. The three-step rivet nut according to claim 1, characterized in that: The threaded hole (5) is a blind hole, and a bottom sealing plate is provided at the bottom of the third step portion (4).

4. The three-step rivet nut according to claim 1, characterized in that: The first step portion (2), the second step portion (3) and the third step portion (4) are all cylindrical.

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