Fixed sealing rivet nut structure

Abstract

The utility model discloses a structure for fixing and sealing a rivet nut, which belongs to the technical field of power batteries and comprises a rod body part, a first end flange part, a second end flange part, a third end flange part, a fourth end flange part, a fifth end flange part and a sixth end flange part, and is characterized in that the first end flange part is arranged at the axial first end of the rod body part; the stop part is an annular flange formed by extending the outer edge of the flange part in the axial direction, and a sealing interval is defined by the stop part, the flange part and the rod body part together. The backstop part is additionally arranged at the flange part of the rivet nut, the backstop part, the flange part and the rod body part jointly define a sealing interval, the sealing interval is matched with a sealing component, an effective sealing space is provided, the sealing component is made to be in the ideal compression amount, sealing durability is guaranteed, meanwhile, the backstop part abuts against a plate, hard connection between metal of the rivet nut and the plate is achieved, and the service life of the rivet nut is prolonged. And connection reliability is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to a fixed sealing rivet nut structure. Background Art

[0002] As one of the important components of electric vehicles, the safety and reliability of the power battery pack are of vital importance. The battery pack case is the armor that protects the power battery pack and requires strict control during design and manufacturing. The battery pack case is inseparable from various connectors, and the functions of various connectors are different. Rivet nuts are common connectors in power battery packs.

[0003] The seals in existing sealed rivet nuts are easily squeezed and broken, affecting the sealing performance, or the seals are infinitely compressed, resulting in the attenuation of the sealing performance of the seals, which seriously affects the sealing performance and connection reliability. Utility Model Content

[0004] The purpose of the utility model is to provide a fixed sealing rivet nut structure to solve the problems encountered by the existing rivet nuts mentioned in the above background technology when used in power battery packs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed sealing rivet nut structure, used to realize the connection of a plate structure in a power battery box, the plate structure includes at least one layer of plate body, and the rivet nut includes:

[0006] A rod body portion having a first end and a second end in an axial direction;

[0007] A flange portion, arranged at a first axial end of the rod body portion;

[0008] The stopper portion is constituted as an annular flange extending along the axial direction from the outer edge of the flange portion, and a sealing interval is defined by the stopper portion, the flange portion and the rod body portion;

[0009] The sealing member is assembled in the sealing area.

[0010] Preferably, the sealing member has a surplus portion protruding axially outward relative to the axial end surface of the stopper portion, and is configured to be compressible.

[0011] Preferably, the rod body portion has a deformation section and a threaded section, and the deformation section is configured to deform during the installation process of the rivet nut so that part of the deformation section forms an expanded diameter portion.

[0012] Preferably, an axially extending hole is formed in the rod body, and the hole includes:

[0013] A first section is formed at the position of the deformation section;

[0014] The second section is formed at the position of the threaded section and is configured as a threaded hole.

[0015] Preferably, the first section is configured as a cylindrical hole, and the hole diameter of the first section is larger than the hole diameter of the second section.

[0016] Preferably, the rod body portion is configured as a polygonal rod body.

[0017] Preferably, the rod body is a hexagonal rod body.

[0018] Preferably, the at least one plate body comprises:

[0019] The first plate body is provided with a first hole for the axial second end of the rod body to pass through, and an axial end surface of one side of the first plate body contacts the end surface of the stop portion during the installation process of the rivet nut.

[0020] Preferably, the diameter of the first hole is larger than the outer diameter of the rod body.

[0021] Preferably, the at least one layer of plate body further comprises:

[0022] The second plate is provided with a second hole for the second axial end of the rod body to pass through, and the second hole is adapted to the rod body.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The present application adds a stopper at the flange of the rivet nut, and defines a sealing area together with the stopper, the flange and the rod body, and cooperates with the sealing component to provide an effective sealing space, so that the seal is in a relatively ideal compression amount, thereby ensuring the durability of the seal. At the same time, the stopper abuts against the plate to achieve a hard connection between the metals of the rivet nut and the plate, thereby ensuring the reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the metal structure of the sealed rivet nut in this patent;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the metal structure of the sealed rivet nut in this patent;

[0027] Figure 3 This is a schematic diagram of the sealed rivet nut assembly in this patent;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the sealed rivet nut assembly in this patent;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the sealed rivet nut used in this patent.

[0030] In the figure:

[0031] 10. Rivet nuts;

[0032] 100, rod body; 100a, deformation section; 100b, threaded section; 100c, enlarged diameter section; 101, hole; 101a, first section; 101b, second section;

[0033] 200, flange;

[0034] 300, stopper;

[0035] 400, sealing member; 400a, inner peripheral surface; 400b, outer peripheral surface; 400c, first end surface; 400d, second end surface; 400e, surplus portion; 401, sealing interval;

[0036] 500, first plate; 501, first hole; 502, second plate; 503, second hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] A fixed sealing rivet nut structure (hereinafter referred to as rivet nut 10) is used to achieve the connection and sealing of a plate structure in a power battery box, wherein the plate structure has at least one layer of plate body, Figure 1 and 2The main body of the rivet nut 10 is composed of a rod body 100 and a flange part 200, wherein the rod body 100 has a first end and a second end in an axial direction, and includes a deformation section 100a and a threaded section 100b, wherein the threaded section 100b is constituted as a section of the rod body 100 adjacent to the second end, and the deformation section 100a is constituted as a section of the rod body 100 adjacent to the first end. Correspondingly, the flange part 200 is constituted as a disc-shaped component provided at the first end of the rod body 100. Further, an axially extending hole 101 is formed in the rod body 100, corresponding to the threaded section 100b and the deformation section 100a of the rod body 100, and the hole 101 has a first section 101. a and a second section 101b, wherein the first section 101a is formed at the position of the deformation section 100a and is configured as, for example, a cylindrical hole 101, and the second section 101b is formed at the position of the threaded section 100b and is configured as, for example, a threaded hole 101, so as to cooperate with the external thread at the end of the rivet tool (such as a rivet gun) to realize the installation of the rivet nut 10. In some embodiments, the above-mentioned deformation section 100a is configured to be deformed during the installation process of the rivet nut 10, so that a portion of the deformation section 100a protrudes radially outward while being axially compressed to form an expanded diameter portion 100c, which is used to cooperate with the flange portion 200 of the rivet nut 10 to realize the plate installation (described later).

[0039] In some embodiments, reference Figure 1 and 2 The above-mentioned rivet nut 10 also has a stopper portion 300, which is configured as an annular flange formed by extending the outer edge of the flange portion 200 along the axial direction. The stopper portion 300, the flange portion 200 and the rod body portion 100 jointly define a sealing interval 401, and the sealing interval 401 is roughly configured as an annular groove for accommodating the subsequent sealing component 400.

[0040] In some embodiments, reference Figure 3 and 4The above-mentioned rivet nut 10 also includes a sealing component 400, which is assembled in the above-mentioned sealing interval 401 and corresponds to the sealing interval 401. The sealing component 400 is roughly constituted as an annular component, and the sealing component 400 has a circumferential inner peripheral surface 400a and an outer peripheral surface 400b and an axial first end surface 400c and a second end surface 400d, wherein the inner peripheral surface 400a and the outer peripheral surface 400b are respectively in contact with the outer wall of the rod body 100 and the inner wall of the stopper 300, and the sealing component The first end face 400c of 400 is fitted with the axial end face of the flange portion 200, and the second end face 400d protrudes axially outward relative to the axial end face of the stop portion 300, that is, the sealing component 400 has a surplus portion 400e protruding axially outward from the sealing interval 401, and the sealing component 400 is configured to be deformable, that is, the sealing component 400 is made of a material such as rubber, so that the sealing component 400 can be compressed and fill the sealing interval 401 to achieve sealing during the installation process of the rivet nut 10.

[0041] In some embodiments, the outer shape of the rod body 100 is a polygon, for example, a hexagon, to prevent rotation.

[0042] Reference Figure 5 , is a schematic diagram of the installation state of the rivet nut 10, which exemplarily shows an installation schematic diagram of a double-layer plate based on the rivet nut 10, and the two plates are respectively recorded as a first plate body 500 and a second plate body, and the first plate body 500 and the second plate body are respectively provided with a first hole 501 and a second hole 502. During the installation process of the rivet nut 10, the second end of the rivet nut 10 passes through the first hole 501 and the second hole 503 in sequence, and after the second end face 400d of the sealing member 400 contacts the axial end face of the first plate body 500, under the action of a rivet tool (such as a rivet gun), the deformation section 100a of the rivet nut 10 is deformed and forms an expanded diameter portion 10 0c, the axial end face of the stop portion 300 in the rivet nut 10 contacts the end face of the first plate body 500, thereby realizing a rigid connection between the metals of the multilayer sheet materials and improving the reliability of the connection strength. At the same time, the expanded diameter portion 100c contacts the end face of the second plate body 502. The first plate body 500 and the second plate body 502 are clamped by the cooperation of the stop portion 300 and the expanded diameter portion 100c. The sealing component 400 is compressed and fills the sealing interval 401 to form a seal. In some embodiments, the aperture of the hole (for example, the first hole portion 501) in the plate (for example, the first plate body 500) adjacent to the flange portion 200 in the multilayer sheet material is larger than the outer diameter of the rod body portion 100 to absorb the transfer tolerance of the components.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed sealing rivet nut structure, characterized in that: Used to realize the connection of the plate structure in the power battery box, the plate structure includes at least one layer of plate body, and the rivet nut includes: A rod body portion having a first end and a second end in an axial direction; A flange portion, arranged at a first axial end of the rod body portion; The stopper portion is constituted as an annular flange extending along the axial direction from the outer edge of the flange portion, and a sealing interval is defined by the stopper portion, the flange portion and the rod body portion; The sealing member is installed in the sealing area.

2. A fixed sealing rivet nut structure according to claim 1, characterized in that: The sealing member has a surplus portion that protrudes axially outward relative to an axial end surface of the stopper portion and is configured to be compressible.

3. A fixed sealing rivet nut structure according to claim 1 or 2, characterized in that: The rod body portion has a deformation section and a threaded section, and the deformation section is configured to be deformed during the installation process of the rivet nut so that part of the deformation section forms an expanded diameter portion.

4. A fixed sealing rivet nut structure according to claim 3, characterized in that: The rod body is formed with an axially extending hole, the hole comprising: A first section is formed at the position of the deformation section; The second section is formed at the position of the threaded section and is configured as a threaded hole.

5. A fixed sealing rivet nut structure according to claim 4, characterized in that: The first section is configured as a cylindrical hole, and the hole diameter of the first section is larger than the hole diameter of the second section.

6. The fixed sealing rivet nut structure according to claim 1, characterized in that: The rod body portion is configured as a polygonal rod body.

7. The fixed sealing rivet nut structure according to claim 1, characterized in that: The rod body is a hexagonal rod body.

8. The fixed sealing rivet nut structure according to claim 1, characterized in that: The at least one plate body comprises: The first plate body is provided with a first hole for the axial second end of the rod body to pass through, and an axial end surface of one side of the first plate body contacts the end surface of the stop portion during the installation process of the rivet nut.

9. A fixed sealing rivet nut structure according to claim 8, characterized in that: The diameter of the first hole is larger than the outer diameter of the rod body.

10. A fixed sealing rivet nut structure according to claim 8 or 9, characterized in that: The at least one plate body further comprises: The second plate is provided with a second hole for the second axial end of the rod body to pass through, and the second hole is adapted to the rod body.

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