Turn-riveting nut and fastening system for battery pack frame

Abstract

The utility model discloses a turning rivet nut and a fastening system for a battery pack frame, the turning rivet nut and the fastening system are used for being riveted with a plate of the battery pack frame, the plate is provided with a through hole riveted with the turning rivet nut, the turning rivet nut comprises a body, the body is provided with a first end and a second end along the axis direction of the body, and the inner side of the body is provided with threads; the flange part is arranged on the outer edge of the body and is fixedly connected with the body; one end, close to the flange part, of the body extends in the axial direction to form the rivet turning handle diameter, the end, in the first end direction, of the rivet turning handle diameter is provided with a rivet turning part, and the diameter of the rivet turning handle diameter is the same as that of the through hole; the body, the flange part and the flanging and riveting handle are coaxially arranged; wherein the outer edge of the flange part extends towards the first end in the axial direction and forms a protruding part, and a groove surrounding the body is formed between the protruding part and the rivet turning handle diameter; and airtight glue is filled in the groove. According to the flange riveting nut, the mechanical performance of the flange riveting nut is improved, and the sealing performance of a fastening system is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely relates to a kind of for battery package frame's rivet nut and fastening system. BACKGROUND

[0002] Rivet nut is a kind of fastener commonly found in battery package frame, is tightly combined with base material by cold riveting or flanging, and forms internal thread connecting point.In the application of battery package, since the working environment requirement is higher, rivet nut needs to have good air tightness and water tightness, to guarantee the stability and safety of battery package.

[0003] Battery package frame has strict requirements on air tightness and water tightness, and the structure of battery package as the core component of electric vehicle should effectively prevent the infiltration of moisture or humidity.Once battery pack is damp, it may cause short circuit, corrosion, even thermal runaway and other safety hazards.Rivet nut is deformed by axial pressure during assembly through flanging process and tightly adheres to base material, not only provides mechanical locking function, but also plays a certain auxiliary role on sealing.However, in actual application, micro gap may be generated due to structural problems of nut itself or insufficient tightness of riveting with plate during riveting, thereby affecting air tightness and water tightness.The existing way for increasing air tightness is to provide a rubber ring on rivet nut, which can be sleeved outside the rivet nut.With the passage of time, the rubber ring may age or even break, thereby reducing sealing performance, and it is not suitable for long-term use. SUMMARY

[0004] In order to overcome the above shortcomings, the utility model aims at providing a kind of for battery package frame's rivet nut and fastening system, not only improve the mechanical properties of rivet nut, but also improve the sealing performance of fastening system.

[0005] Technical scheme: the utility model discloses a kind of for battery package frame's rivet nut and fastening system, for and the riveting of plate of battery package frame, the plate has through hole riveted with rivet nut, the rivet nut includes:

[0006] Body, the body has first end and second end along its axial direction, the inner side of the body is provided with thread;

[0007] Flange portion, the flange portion is arranged at the outer edge of the body, and is fixedly connected with the body;

[0008] Riveting shank diameter, the riveting shank diameter is formed along the axial direction from one end of the body close to the flange portion, the first end direction end of the riveting shank diameter has riveting portion, the diameter of the riveting shank diameter is same with the diameter of the through hole;

[0009] The body, the flange portion and the riveting handle diameter are coaxially arranged;

[0010] The outer edge of the flange portion extends in the axial direction to the first end direction and forms a protruding portion, and a groove is formed on the end face of the flange portion towards the riveting handle diameter side, and the groove is located between the protruding portion and the riveting handle diameter;

[0011] The groove is filled with airtight glue.

[0012] Further, the flange portion further comprises a plurality of anti-skid teeth, and the plurality of anti-skid teeth are arranged on the protruding portion in a spaced manner.

[0013] Further, the plurality of anti-skid teeth are coaxially arranged with the flange portion.

[0014] Further, the inner surface of the riveting handle diameter gradually extends outward in the direction from the bottom to the top.

[0015] Further, the outer side wall surface of the riveting handle diameter is provided with a plurality of torque ribs, and the plurality of torque ribs are distributed in a spaced manner, and the root of any one of the torque ribs is arranged on the bottom plane of the groove.

[0016] Further, the groove comprises a plurality of mutually independent groove units, and any one of the torque ribs is arranged between the corresponding adjacent two groove units.

[0017] Further, the upper end of the torque rib is not lower than the upper surface of the flange portion.

[0018] Further, the side surface of the protruding portion towards the groove is an outwardly inclined plane.

[0019] The utility model discloses still disclose a kind of fastening system for battery pack frame, comprising:

[0020] Plate, the plate has through hole on it;

[0021] Riveting nut, the riveting nut includes

[0022] Body, the body has first end and second end along its axial direction, and the inside of the body is provided with screw thread;

[0023] Flange portion, the flange portion is arranged on the outer edge of the body, and is fixedly connected with the body;

[0024] Riveting handle diameter, the riveting handle diameter is formed in the axial direction from the end of the body close to the flange portion, and the end of the riveting handle diameter in the first end direction has riveting portion, and the diameter of the riveting handle diameter is same with the diameter of the through hole;

[0025] The body, the flange portion and the riveting shank diameter are coaxially arranged;

[0026] The outer edge of the flange portion extends in the axial direction towards the first end and forms a protruding portion, and a groove is formed on the end face of the flange portion towards the riveting shank diameter side, and the groove is located between the protruding portion and the riveting shank diameter; the riveting nut is coated with airtight glue in the groove;

[0027] The riveting shank diameter of the riveting nut penetrates into the through hole, and the riveting portion is deformed and fixed to the plate material by outward riveting.

[0028] Further, the flange portion has anti-skid teeth on the end face towards the first end, and the anti-skid teeth are in close contact with the end face of the plate material towards the second end direction.

[0029] The utility model discloses the beneficial effects are:

[0030] (1) the riveting nut for battery pack frame is formed with a groove on the flange portion for coating airtight glue, which can effectively prevent the entry of gas or liquid during installation, thereby improving the sealing performance of the battery pack frame and meeting the requirements of air tightness and water tightness in a specific environment.

[0031] (2) The outer edge of the flange portion is provided with a plurality of anti-skid teeth, which are in close contact with the plate material and provide effective anti-skid effect, thereby improving the connection stability between the riveting nut and the plate material during use and preventing the riveting nut from slipping or loosening when subjected to external force.

[0032] (3) The riveting portion of the riveting shank diameter is riveted and fixed to the plate material by outward riveting deformation, and this connection mode can adapt to the vibration or impact between the riveting nut and the plate material, and can ensure that the two will not loosen.

[0033] (4) The outer surface of the riveting shank diameter is provided with a plurality of torque ribs, which can strengthen the torsional strength, positioning and fixing effect of the riveting nut, prevent the nut from loosening during use, and further improve the reliability of the connection.

[0034] (5) The inner surface of the riveting shank diameter is a curved surface that gradually extends outward, which facilitates the control of the deformation mode during riveting, thereby ensuring that the riveting process is more stable and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0035] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and scale dimensions of the components in the drawings are only illustrative and are used to help understand the present disclosure and are not specifically limited to the shapes and scale dimensions of the components of the present disclosure. Those skilled in the art can select various possible shapes and scale dimensions to implement the present disclosure according to specific circumstances under the guidance of the present disclosure. In the drawings:

[0036] Fig. 1 A schematic view of the clinch nut for a battery pack frame according to the present disclosure;

[0037] Fig. 2 A sectional view of the clinch nut according to the present disclosure;

[0038] Fig. 3 A top view of the clinch nut according to the present disclosure;

[0039] Fig. 4 A schematic view of the fastening system for a battery pack frame according to the present disclosure.

[0040] In the drawings: 1, plate; 11, through hole; 2, body; 21, first end; 22, second end; 23, thread; 3, flange portion; 31, protruding portion; 32, anti-skid tooth; 4, clinch handle diameter; 41, clinch portion; 42, torque rib; 5, groove; 6, airtight glue. DETAILED DESCRIPTION

[0041] The present disclosure will be further illustrated below in conjunction with the drawings and specific embodiments.

[0042] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. The embodiments will be described below according to the overall structure of the present disclosure.

[0043] As Figs. 1 to 4 shown, the present disclosure discloses a clinch nut for a battery pack frame, which is used for riveting with a plate 1 of the battery pack frame, the plate 1 has a through hole 11 riveted with the clinch nut, and the clinch nut comprises:

[0044] a body 2 having a first end 21 and a second end 22 along the axial direction thereof, an inner side of the body 2 being provided with a thread 23;

[0045] a flange portion 3 arranged at an outer edge of the body 2 and fixedly connected with the body 2;

[0046] a clinch shank 4 extending axially from one end of the body 2 close to the flange portion 3, an end of the clinch shank 4 in the direction of the first end 21 having a clinch portion 41, the diameter of the clinch shank 4 being the same as the diameter of the through hole 11;

[0047] the body 2, the flange portion 3 and the clinch shank 4 being coaxially arranged;

[0048] wherein an outer edge of the flange portion 3 extends axially in the direction of the first end 21 and forms a protrusion 31, the flange portion 3 being formed with a groove 5 on an end face thereof toward the clinch shank 4, the groove 5 being located between the protrusion 31 and the clinch shank 4;

[0049] the groove 5 being filled with an airtight glue 6.

[0050] With the above structure, when the clinch nut is used to rivet the battery pack frame plate 1, the clinch shank 4 passes through the through hole 11 of the plate 1, and when the flange portion 3 abuts against the plate 1, the clinch portion 41 at the end of the clinch shank 4 is clinched by a clinching tool, so that the clinch portion 41 can be outwardly clinched and extruded against the plate 1, and under the joint action of the clinch portion 41 and the flange portion 3, the clinch nut is tightly fixed with the plate 1.

[0051] Specifically, the first end 21 of the body 2 has an opening for bolt connection, and a thread 23 is arranged inside the opening to be connected with an external bolt; a flange part 3 is arranged on the outer edge of the body 2, and the contact surface of the flange part 3 and the plate 1 serves as a force receiving surface and plays a role of a baffle to provide support when the rivet turning part 41 is turned. The body 2, the flange part 3 and the rivet turning shank 4 are coaxially arranged to ensure the precision of the structure and the uniformity of the force, thereby providing excellent durability and reliability under complex working conditions. Compared with the existing rivet turning part, the rivet nut further comprises a groove 5. The outer edge of the flange part 3 extends in the direction of the first end 21 to form a protruding part 31, and the protruding part 31 protrudes upward relative to the plane of the flange part 3, thereby forming a circle of grooves 5 around the body 2. In the application of the battery pack, the rivet nut is required to have good air tightness and water tightness to ensure the stability and safety of the battery pack. However, the existing rivet turning part can only provide the function of rivet turning connection, and cannot meet the special requirements of air tightness and water tightness. The rivet nut has the groove 5 capable of being coated with air tightness glue 6, so that the groove 5 coated with the air tightness glue 6 is tightly combined with the connection part of the plate 1 during riveting, which not only meets the mechanical strength of riveting and fixing, but also meets the requirement of sealing.

[0052] In the embodiment, a plurality of anti-skid teeth 32 are further arranged on the flange part 3, and the plurality of anti-skid teeth 32 are arranged on the protruding part 31 of the flange part 3 in a spaced manner and coaxially arranged with the flange part 3. Due to the arrangement of the anti-skid teeth 32, the flange part 3 can generate multi-point friction when contacting the plate 1, thereby enhancing the engagement force between the rivet nut and the plate 1, and preventing the rivet nut from rotating or loosening when subjected to vibration and impact. At the same time, the anti-skid teeth 32 are coaxially arranged with the flange part 3, thereby making the force of the rivet nut more uniform and further enhancing the stability and torsional resistance of the connection.

[0053] In the embodiment, the inner surface of the rivet turning shank 4 gradually extends outward in the direction from the first end 21 to the second end 22, so that the inner surface of the curved surface can play a guiding role when the rivet turning tool is used to turn the rivet turning part 41 located in the rivet turning shank 4, thereby facilitating effective control of the deformation mode during the rivet turning operation, ensuring smooth operation and avoiding errors caused by deviation of the rivet turning angle.

[0054] In this embodiment, a plurality of torque ribs 42 are arranged on the outer side wall surface of the riveting shank diameter 4 at intervals, and the root of each torque rib 42 is arranged on the plane at the bottom of the groove 5, i.e. the upper surface of the flange portion 3. The arrangement of the torque ribs 42 significantly enhances the anti-torque performance of the riveting nut during installation and use, thereby effectively preventing the nut from rotating or loosening when subjected to external torque or vibration. In addition, the root of each torque rib 42 is fixed to the bottom of the groove 5, further enhancing the structural strength and stability of the riveting nut, enabling it to maintain the reliability of the connection during use, and meeting the high strength and durability requirements of the battery pack frame for the connecting piece. Preferably, the upper end of the torque rib 42 is not lower than the upper surface of the flange portion 3, so that the torque rib 42 can be embedded in the through hole 11 of the plate 1 during installation, thereby improving the anti-rotation capability of the riveting nut, preventing it from rotating during tightening of the bolt, and improving the stability of the connection. On the other hand, the root of the torque rib 42 is deep into the bottom of the groove 5, and the height of the upper end is not lower than the upper surface of the flange portion 3, so that the overall structure is more stable, and the riveting strength between the riveting nut and the plate 1 is improved. Specifically, the groove 5 is divided into a plurality of independent groove units, and a torque rib 42 is arranged between adjacent two groove units, so that the riveting nut has better anti-rotation capability after riveting, thereby improving the stability and reliability of the connection.

[0055] In this embodiment, the inclined plane of the convex portion 31 towards the side surface of the riveting shank diameter 4 is inclined outwardly from the first end 21 to the second end 22. When the riveting portion 41 performs the riveting operation on the plate 1, the riveting portion 41 extrudes the edge of the through hole 11 of the plate 1, the plate 1 is bent towards the groove 5, and the lower surface of the bent portion of the plate 1 is in close contact with the inclined plane of the convex portion 31, thereby enhancing the anti-tension performance between the riveting nut and the plate 1, further improving the sealing performance of the riveting area, preventing leakage of gas or liquid, providing reliable sealing and durability, and meeting the performance requirements of the battery pack frame under complex working conditions.

[0056] The utility model discloses still a kind of fastening system for battery pack frame, including:

[0057] Plate 1, the plate 1 has through hole 11 on it;

[0058] Riveting nut, the riveting nut includes

[0059] Body 2, the body 2 has first end 21 and second end 22 along its axial direction, and the inside of the body 2 is provided with screw thread 23;

[0060] Flange portion 3, the flange portion 3 is arranged on the outer edge of the body 2, and is fixedly connected with the body 2;

[0061] The riveting handle diameter 4 is formed in the body 2 near one end of the flange part 3 in the axial direction, and the end of the first end 21 of the riveting handle diameter 4 has a riveting part 41, and the diameter of the riveting handle diameter 4 is the same as the diameter of the through hole 11;

[0062] The body 2, the flange part 3 and the riveting handle diameter 4 are coaxially arranged;

[0063] The outer edge of the flange part 3 extends in the axial direction towards the first end 21 and forms a protruding part 31, and the flange part 3 forms a groove 5 on the end face of the side towards the riveting handle diameter 4, and the groove 5 is located between the protruding part 31 and the riveting handle diameter 4; the groove 5 of the riveting nut is coated with an airtight glue 6;

[0064] The riveting handle diameter 4 of the riveting nut penetrates into the through hole 11 of the plate 1, and the riveting part 41 is deformed outwardly to be riveted and fixed with the plate 1.

[0065] Through the above structure, the airtight glue 6 is pre-coated in the groove 5, the riveting handle diameter 4 of the riveting nut penetrates into the through hole 11 of the plate 1, the flange part 3 is tightly attached to the plate 1, and the riveting part 41 is deformed outwardly under the action of external force, so that the riveting nut is firmly riveted with the plate 1. The airtight glue 6 coated in the groove 5 cooperates with the plate 1 to further form a sealed protection after riveting, so as to realize reliable connection and sealing performance of the fastening system.

[0066] Further, the end face of the flange part 3 towards the first end has an anti-skid tooth 32, which is tightly contacted with the end face of the plate 1 towards the second end 22, so that the anti-skid tooth 32 is tightly contacted with the end face of the plate 1 to form multi-point engagement, thereby enhancing the friction force of the contact surface, effectively preventing the riveting nut from slipping or loosening under the action of vibration or torque, improving the anti-sliding performance, and improving the stability and durability of the fastening system.

[0067] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A clinch nut for a battery pack frame, characterized by, A rivet for riveting with a plate of a battery pack frame, the plate having a through hole riveted with a snap rivet nut, the snap rivet nut comprising: a body having a first end and a second end along an axial direction of the body, an inner side of the body being provided with a thread; a flange portion provided at an outer edge of the body and fixedly connected with the body; a snap rivet shank extending axially from an end of the body close to the flange portion, an end of the snap rivet shank in the first end direction having a snap rivet portion, a diameter of the snap rivet shank being the same as a diameter of the through hole; the body, the flange portion and the snap rivet shank being coaxially arranged; wherein an outer edge of the flange portion extends axially towards the first end direction and forms a raised portion, the flange portion has a groove formed on an end face thereof towards the snap rivet shank, the groove being located between the raised portion and the snap rivet shank in a radial direction; the groove being filled with airtight glue.

2. The clinch nut for a battery pack frame of claim 1, wherein, the flange portion further comprising a plurality of anti-skid teeth, the plurality of anti-skid teeth being spacedly arranged on the raised portion.

3. The clinch nut for a battery pack frame of claim 2, wherein, the plurality of anti-skid teeth being coaxially arranged with the flange portion.

4. The clinch nut for a battery pack frame of claim 1, wherein, an inner surface of the snap rivet shank being a curved surface gradually extending outwardly from a bottom to a top.

5. The clinch nut for a battery pack frame of claim 1, wherein, an outer wall surface of the snap rivet shank being provided with a plurality of torque ribs, the plurality of torque ribs being spacedly distributed, a root of any one of the torque ribs being arranged at a bottom plane of the groove.

6. The clinch nut for a battery pack frame of claim 5, wherein, the groove comprising a plurality of mutually independent groove units, any one of the torque ribs being arranged between two adjacent groove units.

7. The clinch nut for a battery pack frame of claim 5, wherein, an upper end of the torque rib being not lower than an upper surface of the flange portion.

8. The clinch nut for a battery pack frame of claim 1, wherein, a side surface of the raised portion towards the groove being an outwardly inclined plane.

9. A fastening system for a battery pack frame, characterized by, comprising: a plate having a through hole; a snap rivet nut comprising a body having a first end and a second end along an axial direction of the body, an inner side of the body being provided with a thread; a flange portion provided at an outer edge of the body and fixedly connected with the body; a snap rivet shank extending axially from an end of the body close to the flange portion, an end of the snap rivet shank in the first end direction having a snap rivet portion, a diameter of the snap rivet shank being the same as a diameter of the through hole; the body, the flange portion and the snap rivet shank being coaxially arranged; wherein an outer edge of the flange portion extends axially towards the first end direction and forms a raised portion, the flange portion has a groove formed on an end face thereof towards the snap rivet shank, the groove being located between the raised portion and the snap rivet shank in a radial direction; the groove of the snap rivet nut being coated with airtight glue; the snap rivet shank of the snap rivet nut penetrating into the through hole, the snap rivet portion being outwardly deformed and riveted with the plate.

10. The fastening system for a battery pack frame of claim 9, wherein, the flange portion having an anti-skid tooth on an end face thereof towards the first end, the anti-skid tooth being in close contact with an end face of the plate towards the second end.

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