A plug cap with reverse buckle type filling structure

Abstract

This utility model discloses a plug-in type potting structure, including a connector body and a connecting piece inserted into the connector body. The connector body has a through-hole potting groove, and the connecting piece passes through the potting groove. A plug is inserted into one end of the potting groove. The plug has a sealing part and a fixing part. The sealing part abuts against the wall of the potting groove and restricts the glue from overflowing, and the fixing part is placed in the potting groove and engages with the solidified glue to prevent the plug from detaching from the potting groove.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly technology, specifically to a plugging cap with an inverted plugging structure. Background Technology

[0002] In the automotive industry, three-phase connectors require potting treatment. The main purpose is to ensure electrical insulation, moisture and corrosion protection, shock and impact resistance, and to assist in heat dissipation. The potting material (such as epoxy resin and silicone) can seal internal gaps to prevent high-voltage breakdown, oxidation, or dust intrusion, while improving mechanical strength and thermal management performance. This process meets automotive industry safety standards and significantly improves the reliability and lifespan of high-voltage components in harsh environments, making it one of the key design features of electric vehicles.

[0003] Existing technologies typically use rubber stoppers and tape to fill the glue, which results in a long curing period. Furthermore, when the rubber stopper or tape is removed during airtightness testing, glue residue remains on the surface, leading to product contamination. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a capping with an inverted plugging structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A plug with an inverted potting structure includes a connector body and a connecting insert inserted into the connector body. The connector body has a through potting groove, the connecting insert is inserted into the potting groove, and a plug is inserted into one end of the potting groove.

[0007] The plug has a sealing part and a fixing part. The sealing part abuts against the wall of the glue-filling tank and restricts glue overflow. The fixing part is inserted into the glue-filling tank and engages with the solidified glue to prevent the plug from detaching from the glue-filling tank.

[0008] Preferably, the fixing part includes a plurality of fixing buckles formed at the bottom of the plug, and the fixing buckles and the sealing part form a filling snap groove for the glue to flow in. With the above improvement, the plug is embedded in the glue filling groove of the body. After the glue is filled, the glue flows into the filling snap groove of the plug and forms a buckle with the direction of the plug loosening, pulling the plug in place and fixing the plug.

[0009] Preferably, the fixing buckle includes a first buckle centrally located at the bottom of the plug and a second buckle located on both sides of the first buckle. The first and second buckles form a glue channel that connects to the filling snap-fit ​​groove. With the above improvement, during the glue injection process, the glue will enter the filling snap-fit ​​groove through the glue channel and the gap between the fixing buckle and the glue injection groove. After the glue solidifies, it will form a buckle and snap-fit ​​with the first and second buckles respectively to ensure the stability of the plug installation.

[0010] Preferably, the sealing part includes a first skirt and a second skirt arranged sequentially along the insertion direction, wherein the first skirt fits against the wall of the glue-filling tank, and the second skirt is interference-fitted with the wall of the glue-filling tank. Through the above improvements, the sealing performance between the sealing part and the glue-filling tank is greatly increased, and glue overflow is avoided.

[0011] Preferably, a sealing protrusion is formed above the second skirt, which abuts against the main body of the connector. With the above improvement, when the cap is inserted into the glue-filling groove, the sealing protrusion abuts against the main body of the connector and covers the opening of the glue-filling groove. Furthermore, the sealing effect is further improved by the cooperation of the sealing protrusion with the first and second skirts.

[0012] Preferably, the first skirt edge and the second skirt edge form a first anti-overflow glue groove. With the above improvements, if there is a gap between the first skirt edge and the glue filling groove, the glue can flow into the first anti-overflow glue groove to reduce the risk of glue overflow. Furthermore, if the glue fills the entire first anti-overflow glue groove, it can further increase the sealing performance after the glue solidifies.

[0013] Preferably, the second skirt and the sealing protrusion form a second anti-overflow glue groove. With the above improvements, if a gap appears between the second skirt and the glue filling groove, the glue can flow into the second anti-overflow glue groove, further reducing the risk of glue overflow. At the same time, if the glue fills the entire second anti-overflow glue groove, it can further increase the sealing performance after the glue solidifies.

[0014] Preferably, the thickness of the first buckle is greater than the thickness of the second buckle. Through the above improvements, the first buckle is centered and its thickness is increased to increase the structural strength of the entire fixing part, so as to ensure the reliability of the plug fixing.

[0015] Preferably, the second buckle extends to both sides, and the length of the second buckle is greater than that of the first buckle. Through the above improvements, the area for contact with the adhesive is increased, thereby further increasing the stability and reliability of the plug installation.

[0016] Preferably, the thickness of the first skirt is greater than the thickness of the second skirt. Through the above improvements, the sealing performance is further enhanced, thereby reducing the risk of adhesive overflow.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] By inserting a plug into the glue-filling tank, with the plug having a sealing part and a fixing part, the sealing part abuts against the tank wall and restricts glue overflow, while the fixing part engages with the solidified glue to prevent the plug from detaching from the glue-filling tank. This structure only requires glue filling from one side, shortening the glue filling cycle and simplifying the glue filling tooling. Compared with the traditional glue filling method of plugging with glue stoppers and wrapping with tape, this structure does not need to be disassembled after being fitted with the main body. After the glue has cured and the airtightness test is completed, it can be shipped directly, while also avoiding product contamination problems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the overall structure of this utility model from another angle;

[0022] Figure 4 For the present utility model Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the plug of this utility model;

[0024] In the diagram: 1. Connector body; 2. Connecting insert; 3. Glue filling tank; 4. Plug; 1.1. Sealing part; 1.2. Fixing part; 2.1. Fixing buckle; 2.2. Filling snap groove; 3.1. First buckle; 3.2. Second buckle; 3.3. Glue passage groove; 4.1. First skirt; 4.2. Second skirt; 4.3. Sealing protrusion; 5.1. First anti-overflow glue groove; 5.2. Second anti-overflow glue groove; Detailed Implementation

[0025] 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.

[0026] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0027] like Figure 1-5 As shown, a plug 4 with an inverted potting structure includes a connector body 1 and a connecting insert 2 inserted into the connector body 1. The connector body 1 has a through potting groove 3, the connecting insert 2 is inserted into the potting groove 3, and a plug 4 is inserted into one end of the potting groove 3.

[0028] Specifically, the plug 4 has a sealing part 1.1 and a fixing part 1.2. The sealing part 1.1 abuts against the wall of the glue-filling tank 3 and restricts the glue from overflowing, while the fixing part 1.2 is inserted into the glue-filling tank 3 and engages with the solidified glue to prevent the plug 4 from detaching from the glue-filling tank 3.

[0029] By inserting a plug 4 into the glue dispensing tank 3, the sealing part 1.1 on the plug 4 can abut against the tank wall of the glue dispensing tank 3 and restrict the glue from overflowing, and the fixing part 1.2 is engaged with the solidified glue to prevent the plug 4 from detaching from the glue dispensing tank 3.

[0030] In addition, this structure only requires glue to be poured from one side, which greatly shortens the glue pouring cycle and simplifies the glue pouring tooling. Compared with the traditional glue pouring method of plugging with glue stoppers and wrapping with tape, this structure does not need to be disassembled after it is put into use with the main body. After the glue is poured and cured, the airtightness test is completed and the product can be shipped directly. At the same time, it also avoids the problem of product contamination.

[0031] like Figures 3 to 5 As shown, as a further explanation of the specific structure of the fixing part 1.2, the fixing part 1.2 includes a number of fixing buckles 2.1 formed at the bottom of the plug 4, and the fixing buckles 2.1 and the sealing part 1.1 form a filling snap groove 2.2 for the flow of glue. The plug 4 is embedded in the glue filling groove 3 of the body. After the glue is filled, the glue flows into the filling snap groove 2.2 of the plug 4, forming a buckle with the direction of the plug 4 to loosen, pulling the plug 4 in place and fixing the plug 4.

[0032] Specifically, the fixing buckle 2.1 includes a first buckle 3.1 centrally located at the bottom of the plug 4, and a second buckle 3.2 located on both sides of the first buckle 3.1, and the first buckle 3.1 and the second buckle 3.2 form a glue groove 3.3 that connects the filling snap-fit ​​groove 2.2.

[0033] During the glue injection process, the glue will enter the filling snap-fit ​​groove 2.2 through the glue channel 3.3 and the gap between the fixed buckle 2.1 and the glue filling channel 3. After the glue solidifies, it will form a buckle, which will snap with the first buckle 3.1 and the second buckle 3.2 respectively to ensure the stability and reliability of the fixed installation of the plug 4.

[0034] Furthermore, the thickness of the first buckle 3.1 is greater than the thickness of the second buckle 3.2. The first buckle 3.1 is centrally located, and its thickness is increased to increase the structural strength of the entire fixing part 1.2, so as to ensure the reliability of the plug 4 fixing.

[0035] Preferably, the second buckle 3.2 extends to both sides, and the length of the second buckle 3.2 is greater than that of the first buckle 3.1, which greatly increases the area of ​​contact with the glue, thereby further increasing the stability and reliability of the plug 4 installation.

[0036] like Figures 3 to 5 As shown, as a further explanation of the specific structure of the fixing part 1.2, the sealing part 1.1 includes a first skirt 4.1 and a second skirt 4.2 arranged sequentially along the insertion direction. The first skirt 4.1 fits against the wall of the glue-filling groove 3, and the second skirt 4.2 is interference-fitted with the wall of the glue-filling groove 3, which greatly increases the sealing performance between the sealing part 1.1 and the glue-filling groove 3 and avoids glue overflow.

[0037] Specifically, a sealing protrusion 4.3 is formed above the second skirt 4.2. The sealing protrusion 4.3 abuts against the connector body 1. When the cap is inserted into the glue-filling groove 3, the sealing protrusion 4.3 abuts against the connector body 1 and covers the groove opening of the glue-filling groove 3. Furthermore, the sealing effect is further improved by the cooperation of the sealing protrusion 4.3 with the first skirt 4.1 and the second skirt 4.2.

[0038] Furthermore, the first skirt 4.1 and the second skirt 4.2 form a first anti-overflow glue groove 5.1. If there is a gap between the first skirt 4.1 and the glue filling groove 3, the glue can flow into the first anti-overflow glue groove 5.1 to reduce the risk of glue overflow. If the glue fills the entire first anti-overflow glue groove 5.1, it can further increase the sealing performance after the glue solidifies.

[0039] Preferably, the second skirt 4.2 and the sealing protrusion 4.3 form a second anti-overflow glue groove 5.2. If there is a gap between the second skirt 4.2 and the glue filling groove 3, the glue can flow into the second anti-overflow glue groove 5.2, further reducing the risk of glue overflow. At the same time, if the glue fills the entire second anti-overflow glue groove 5.2, it can further increase the sealing performance after the glue solidifies.

[0040] Preferably, the thickness of the first skirt 4.1 is greater than the thickness of the second skirt 4.2, which further improves the sealing performance and reduces the risk of adhesive overflow.

[0041] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A plug-in type potting structure, comprising a connector body (1) and a connecting insert (2) inserted into the connector body (1), characterized in that, The connector body (1) has a through-hole glue-filling groove (3), the connector insert (2) is inserted into the glue-filling groove (3), and a plug (4) is inserted into one end of the glue-filling groove (3); The plug (4) has a sealing part (1.1) and a fixing part (1.2). The sealing part (1.1) abuts against the wall of the glue-filling tank (3) and restricts the glue from overflowing. The fixing part (1.2) is placed in the glue-filling tank (3) and engages with the solidified glue to prevent the plug (4) from leaving the glue-filling tank (3).

2. The plugging cap with inverted interlocking potting structure according to claim 1, characterized in that: The fixing part (1.2) includes a plurality of fixing buckles (2.1) formed at the bottom of the plug (4), and the fixing buckles (2.1) and the sealing part (1.1) form a filling snap groove (2.2) for the flow of glue.

3. The plugging cap with inverted interlocking potting structure according to claim 2, characterized in that: The fixing buckle (2.1) includes a first buckle (3.1) centrally located at the bottom of the plug (4) and a second buckle (3.2) located on both sides of the first buckle (3.1), and the first buckle (3.1) and the second buckle (3.2) form a glue groove (3.3) that connects the filling snap-fit ​​groove (2.2).

4. The plugging cap with inverted interlocking potting structure according to claim 1, characterized in that: The sealing part (1.1) includes a first skirt (4.1) and a second skirt (4.2) arranged sequentially along the insertion direction, wherein the first skirt (4.1) is in contact with the wall of the glue-filling groove (3), and the second skirt (4.2) is in an interference fit with the wall of the glue-filling groove (3).

5. The plugging cap with inverted interlocking potting structure according to claim 4, characterized in that: A sealing protrusion (4.3) is also formed above the second skirt edge (4.2), which abuts against the connector body (1).

6. The plugging cap with inverted interlocking potting structure according to claim 4, characterized in that: The first skirt edge (4.1) and the second skirt edge (4.2) form a first anti-overflow groove (5.1).

7. The plugging cap with inverted interlocking potting structure according to claim 5, characterized in that: The second skirt (4.2) and the sealing protrusion (4.3) form a second anti-overflow groove (5.2).

8. The plugging cap with inverted interlocking potting structure according to claim 3, characterized in that: The thickness of the first buckle (3.1) is greater than the thickness of the second buckle (3.2).

9. The plugging cap with inverted interlocking potting structure according to claim 3, characterized in that: The second buckle (3.2) extends toward both sides, and the length of the second buckle (3.2) is greater than that of the first buckle (3.1).

10. A plugging cap with an inverted plugging structure according to claim 4, characterized in that: The thickness of the first skirt edge (4.1) is greater than the thickness of the second skirt edge (4.2).

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