Rivet plug

Abstract

The utility model discloses a pull riveting plug, which relates to the technical field of pull riveting plugs and comprises a rivet core body, the rivet core body is divided into two parts, namely a circular plate at the top end and a cylinder fixedly connected with the lower part of the circular plate, a cap body is sleeved below the rivet core body in a sliding manner, and in the process that the cap body slides along the axial direction of the rivet core body, the circular plate is fixedly connected with the cylinder. The diameter of the rivet core body is gradually increased along with the sliding process of the cap body, and a polygonal coil is arranged on the outer diameter of the cylinder of the rivet core body. The cap body is arranged in the rivet core body in the sliding and sleeved mode, the cap body abuts against the rivet core body through external force to move upwards along the inner wall of the rivet core body, at the moment, the inner cavity of the rivet core body can be expanded, and then the polygonal spiral ring on the outer diameter of the rivet core body and the inner wall of the connecting hole of the thin plate are squeezed. And therefore, the mounting hole of the thin plate is sealed, and compared with gluing sealing, the sealing stability is improved through mechanical sealing.

Description

Technical Field

[0001] This utility model relates to the field of rivet plug technology, and in particular to a rivet plug. Background Technology

[0002] Battery packs typically require sealing during manufacturing. The top and bottom edges of the battery pack are usually wrapped with thin plates, and polygonal connection holes are provided between the plates. Currently, the connection holes are usually sealed by installing rivet plugs in them. After installation, the rivet plugs and the connection holes need to be sealed with adhesive. However, the adhesive is prone to aging and delamination after long-term use, resulting in insufficient sealing stability. Therefore, a rivet plug is needed to accelerate the sealing of the battery pack. Utility Model Content

[0003] The purpose of this utility model is to provide a rivet plug to solve the problem mentioned in the background art that the mounting holes between thin plates of the battery pack need to be sealed with glue after installing the rivet plug, and the glue is prone to delamination after long-term use, resulting in insufficient sealing effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rivet plug, comprising a core body, the core body comprising a circular plate and a cylindrical plate fixedly connected below the circular plate, a cap body slidably sleeved below the core body, the diameter of the core body gradually increases as the cap body slides along the axial direction of the core body during the sliding process, and a polygonal helical ring is provided on the outer diameter of the outer cylinder of the core body.

[0005] Preferably, the cap body includes a straight cylindrical section and a frustum section. The straight cylindrical section is cylindrical and its outer diameter is larger than the inner diameter of the nail core. The frustum section is frustum-shaped, and its top diameter is smaller than the diameter of the nail core. Its bottom diameter is larger than the diameter of the nail core. A cap bottom plate with a diameter larger than the inner diameter of the nail core is fixedly connected to the bottom of the straight cylindrical section.

[0006] Preferably, the straight cylindrical section, the frustum section, and the cap base plate are cast as a single piece.

[0007] Preferably, the nail core is integrally cast with the polygonal spiral ring.

[0008] Preferably, the nail core and the polygonal spiral are detachable. A slider is fixedly connected to the inner wall of the top of the inner diameter of the polygonal spiral. The outer diameter of the cylinder of the nail core is provided with a shaped groove that matches the slider. The shaped groove includes a diameter groove and a transverse groove that communicates with the diameter groove.

[0009] Preferably, the inner diameter of the cap body is threaded.

[0010] Preferably, a break point is pre-set between the nail core and the cap.

[0011] The technical effects and advantages of this utility model are as follows: This utility model slides a cap inside the nail core, and moves the cap upward along the inner wall of the nail core by external force. At this time, the inner cavity of the nail core will expand, which will cause the polygonal screw ring of the outer diameter of the nail core to be squeezed against the inner wall of the connecting hole of the thin plate, thereby achieving a sealing effect on the mounting hole of the thin plate. Compared with the sealing of adhesive, the mechanical seal increases the stability of the seal. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the polygonal spiral structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the nail core structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the cap structure of this utility model.

[0016] In the diagram: 1. Nail core; 11. Irregular groove; 2. Cap body; 21. Straight cylindrical section; 22. Frustum section; 23. Cap base plate; 24. Thread; 3. Polygonal thread; 31. Slider. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figure 1-4 A rivet plug is shown, including a core body 1, which includes a circular plate and a cylindrical tube fixedly connected below the circular plate. A cap 2 is slidably sleeved below the core body 1. During the sliding process of the cap 2 along the axial direction of the core body 1, the diameter of the core body 1 gradually increases with the sliding process of the cap 2. A polygonal helical ring 3 is provided on the outer diameter of the cylindrical tube of the core body 1.

[0019] To address the issue that existing rivet plugs require adhesive application for sealing after installation, this invention features a cap 2 slidably fitted inside the rivet core 1. External force pushes the cap 2 upwards along the inner wall of the rivet core 1, causing the inner cavity of the rivet core 1 to expand. This allows the polygonal threaded ring 3 on the outer diameter of the rivet core 1 to press against the inner wall of the connecting hole in the thin plate, achieving a sealing effect. Simultaneously, the polygonal threaded ring 3 prevents rotation between the rivet core 1 and the connecting hole, avoiding the problem of insufficient sealing due to adhesive aging after application. Furthermore, this invention eliminates the need for adhesive application after rivet plug installation, accelerating battery pack production.

[0020] like Figure 1 and Figure 4 As shown, the cap body 2 includes a straight cylindrical section 21 and a frustum section 22. The straight cylindrical section 21 is cylindrical and its outer diameter is larger than the inner diameter of the nail core 1. The frustum section 22 is frustum shaped. The top diameter of the frustum section 22 is smaller than the diameter of the nail core 1, and the bottom diameter of the frustum section 22 is larger than the diameter of the nail core 1. A cap bottom plate 23 with a diameter larger than the inner diameter of the nail core 1 is fixedly connected to the bottom of the straight cylindrical section 21.

[0021] When the cap 2 moves upward, the frustum section 22 is frustum-shaped. When the cap 2 moves upward, the frustum section 22 will expand against the cylinder of the nail core 1, thereby causing the polygonal screw ring 3 to fit tightly against the inner wall of the mounting hole. At the same time, since the size of the cap base plate 23 is larger than the inner diameter of the nail core 1, it prevents the cap 2 from moving upward and penetrating the nail core 1.

[0022] like Figure 1 As shown, the straight cylindrical section 21, the frustum section 22, and the cap base plate 23 are cast in one piece, which increases the rigidity and strength of the cap body 2.

[0023] like Figure 1 As shown, the nail core 1 and the polygonal spiral ring 3 are integrally cast, which saves manufacturing process compared to the separate design of the nail core 1 and the polygonal spiral ring 3.

[0024] like Figure 2 and Figure 3 As shown, the nail core 1 and the polygonal spiral ring 3 are detachable. The inner wall of the top of the inner diameter of the polygonal spiral ring 3 is fixedly connected to a slider 31. The outer diameter of the cylinder of the nail core 1 is provided with a special groove 11 that is adapted to the slider 31. The special groove 11 includes a diameter groove and a transverse groove that communicates with the diameter groove.

[0025] When dealing with different sizes and shapes of mounting holes, the polygonal screw ring 3 can be replaced before installation. When replacing, first slide the slider 31 into the top of the diameter groove, and then turn the polygonal screw ring 3 to make the slider 31 slide into the transverse groove.

[0026] like Figure 4 As shown, the inner diameter of the cap body 2 is threaded with a thread 24. When it is necessary to disassemble the rivet plug, first take out the nut and screw it into the thread 24. By pushing the nut downward, the cap body 2 slides out of the cylinder of the nail core body 1. At this time, the internal expansion force of the polygonal screw ring 3 disappears, and the resistance between the polygonal screw ring 3 and the connecting hole disappears. Then the nail core body 1 can be taken out, achieving the effect of non-destructive disassembly of the workpiece.

[0027] like Figure 1 As shown, there is a pre-set break point between the nail core 1 and the cap 2, which makes it easy to pick up and use the nail core 1 and the cap 2 as a whole.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pull-rivet plug comprising a core body (1), characterized in that: The nail core (1) includes a circular plate and a cylindrical tube fixedly connected below the circular plate. A cap (2) is slidably sleeved below the nail core (1). During the process of the cap (2) sliding along the axial direction of the nail core (1), the diameter of the nail core (1) gradually increases with the sliding process of the cap (2). The outer diameter of the outer cylinder of the nail core (1) is provided with a polygonal helical ring (3).

2. A plug for a rivet according to claim 1, wherein: The cap body (2) includes a straight cylindrical section (21) and a frustum section (22). The straight cylindrical section (21) is cylindrical and its outer diameter is larger than the inner diameter of the nail core (1). The frustum section (22) is frustum-shaped. The top diameter of the frustum section (22) is smaller than the diameter of the nail core (1), and the bottom diameter of the frustum section (22) is larger than the diameter of the nail core (1). The bottom of the straight cylindrical section (21) is fixedly connected to a cap bottom plate (23) that is larger than the inner diameter of the nail core (1).

3. A plug for a blind rivet according to claim 2, wherein: The straight cylindrical section (21), the frustum section (22), and the cap bottom plate (23) are cast as a single piece.

4. A plug for a rivet according to claim 1, wherein: The nail core (1) and the polygonal spiral ring (3) are integrally cast.

5. A plug for a pull-rivet according to claim 1, wherein: The nail core (1) and the polygonal spiral ring (3) are detachable. A slider (31) is fixedly connected to the inner wall of the top of the inner diameter of the polygonal spiral ring (3). The outer diameter of the cylinder of the nail core (1) is provided with a special groove (11) that is adapted to the slider (31). The special groove (11) includes a diameter groove and a transverse groove that communicates with the diameter groove.

6. A plug for a pull-rivet according to claim 1, wherein: The inner diameter of the cap (2) is provided with threads (24).

7. A plug for a pull-rivet according to claim 1, wherein: There is a pre-set break point between the nail core (1) and the cap (2).

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