A sealing structure of a fast charging interface

Abstract

The utility model relates to a quick charging equipment technical field provides a kind of quick charging interface sealing structure, including the lower cover and upper cover of mutual buckling, lower cover tail portion is equipped with tail plate, upper cover tail portion is equipped with the tail plug of tail plate plug-in cooperation, tail plate and tail plug are all opened a pair of wire hole, wire hole is communicated horn-shaped reverse mould hole, lower cover, upper cover and the glue injection port of upper cover form glue injection chamber, glue solidification forms the mushroom head locking structure of wrapping wire and circuit board, and mushroom head is embedded in the anchoring cavity of reverse mould hole. By abandoning plunger, adopt glue solidification and form the mushroom head locking structure of integral wrapping, completely eliminate the risk of sealing failure caused by uneven cover compression force or tolerance of traditional cable plug, eliminate water vapor / dust penetration.

Description

Technical Field

[0001] This utility model relates to the field of fast charging equipment technology, specifically to a fast charging interface sealing structure. Background Technology

[0002] In the production process of fast charging interface components, in order to achieve the sealing of the lead-out end of the tail wire, the conventional solution is to put an elastic cable plug (such as rubber or silicone) around the wire and press the cable plug tightly into the interlocking gap between the upper and lower covers. The sealing barrier is formed by the radial compression force of the cover on the cable plug. Although this structure has the advantage of simple assembly, it has revealed significant defects in long-term use. The compression of the cable plug is highly dependent on the tightness of the upper and lower covers when they are fastened. If there is a slight deviation in the fastening or the component tolerances accumulate, it is easy to cause insufficient local compression, which can lead to the infiltration of moisture or dust. Furthermore, the stress generated when the wire is pulled or bent externally is directly transmitted to the contact surface between the cable plug and the cover. Long-term action may cause the cable plug to creep or shift, which will damage the sealing performance. Therefore, we propose a fast charging interface sealing structure. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a fast charging interface sealing structure to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A fast charging interface sealing structure includes a lower cover and an upper cover that interlock with each other. The lower cover has a tail plate at its tail end, and the upper cover has a tail plug at its tail end that is inserted into the tail plate. Both the tail plate and the tail plug have a pair of wire holes that are connected to a funnel-shaped molding hole. The lower cover, the upper cover, and the glue injection port of the upper cover form a glue injection chamber. After the glue is injected and cured, a mushroom head locking structure is formed that wraps the wires and the circuit board, and the mushroom head is embedded in the anchoring cavity of the molding hole.

[0006] Preferably, the tail plate has a vertical tail groove, the inner walls on both sides of the tail groove have slots, and the tail insert has buckle protrusions on both sides, which are engaged and fixed with the slots.

[0007] Preferably, the lower cover head sidewall is provided with an integrally formed extension arm, which abuts against the upper cover to form a limiting groove.

[0008] Preferably, it also includes a dust cover, the inner wall of which is provided with a connector;

[0009] The vertical arm of the connector is inserted into the limiting groove, and the horizontal arm fits against the outside of the extension arm.

[0010] Preferably, the length of the horizontal arm is greater than the length of the limiting groove, and the horizontal arm and the vertical arm are made of elastic material.

[0011] This utility model provides a sealing structure for a fast charging interface. It has the following beneficial effects:

[0012] 1. By eliminating the plunger and using a mushroom-shaped locking structure formed by injection curing, the risk of sealing failure caused by uneven or tolerant pressure of the cap in traditional cable plugs is completely eliminated, and water vapor / dust penetration is prevented.

[0013] 2. The funnel-shaped molding hole design enables the cured colloid to form a mechanical anchor. When the wire is stretched, the stress is evenly distributed by the mushroom head structure, avoiding displacement or creep of the sealing interface and preventing the wire from coming out.

[0014] 3. The connector adopts a flexible snap-fit ​​design between the vertical and horizontal arms, which enables quick disassembly and assembly of the dust cover, solving the problem of structural damage caused by forced disassembly of traditional one-piece rubber parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the lower cover of this utility model;

[0017] Figure 3 This utility model Figure 2 Top view diagram;

[0018] Figure 4 This is a schematic diagram of the top cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the dust cover of this utility model.

[0020] In the diagram: 1. Lower cover; 11. Extension rod; 12. Groove; 13. Tail plate; 14. Tail groove; 15. Slot; 16. Wire hole; 17. Molding hole; 2. Upper cover; 21. Glue injection port; 22. Tail plug; 24. Buckle protrusion; 3. Dust cover; 31. Connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of this utility model, not all of it. Based on this utility model, all other inventions obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] See attached document Figure 1-5A fast charging interface sealing structure includes a lower cover 1 and an upper cover 2. The lower cover 1 and the upper cover 2 are fastened together to form a cavity for accommodating a circuit board. An injection port 21 is provided on the upper cover 2. The lower cover 1, the upper cover 2 and the injection port 21 form an open injection cavity.

[0023] A tail plate 13 extends outward from the tail of the lower cover 1. The tail plug 22 at the tail of the upper cover 2 corresponds to the tail plate 13. Both the tail plate 13 and the tail plug 22 have a pair of wire holes 16 that communicate with the cavity of the lower cover 1 for connecting positive and negative wires. The wire holes 16 are connected by a funnel-shaped molding hole 17, and the anchoring cavity of the molding hole 17 is connected to the lower cover 1. After the glue is injected, the glue expands and solidifies to form a "mushroom head" locking structure, which wraps the wires and circuit board into a whole to prevent them from falling out. The expansion and solidification of the glue to form a "mushroom head" can also play a shock absorption role.

[0024] A vertical tail groove 14 is provided on the tail plate 13. A slot 15 is provided on the inner walls of both sides of the tail groove 14. The tail plug 22 is inserted into the tail groove 14. The buckle protrusions 24 on both sides of the tail plug 22 are engaged with the slot 15.

[0025] An integrally formed extension arm 11 is provided on the head side wall of the lower cover 1. The extension arm 11 extends away from the lower cover 1 and to the upper cover 2 until it abuts against the upper cover 2 to form a limiting groove 12. When the lower cover 1 and the upper cover 2 are fastened together, the upper cover 2 abuts against the extension arm 11 and together forms the limiting groove 12. The vertical arm of the connector 31 is inserted into the limiting hole 12, and the horizontal arm is fastened to the outside of the extension arm 11.

[0026] The original design of the connector 31 was to connect the lower cover 1 to the protruding cylinder. Both the protrusion and the cylinder were made of elastic materials such as rubber. If it was to be removed, it would require brute force to pull it out directly from the hole in the lower cover 1. The stress would be concentrated at the protrusion, and long-term use would eventually lead to structural failure. Therefore, the connector 31 of this application is set on one side of the inner wall of the dust cover 3 and is detachably matched with the limiting groove 12. The dust cover 3 can close the head of the lower cover 1 and the upper cover 2 after they are fastened.

[0027] The connector 31 includes a vertical arm and a horizontal arm made of elastic material. One end of the vertical arm is located in the middle of the horizontal arm, and the other end is located on one side of the inner wall of the connector 31. The vertical arm passes through the limiting groove 12, and the horizontal arm is located away from the head of the lower cover 1 and fits against the outer wall of the lower cover 1. At this time, the length of the horizontal arm is greater than the length of the limiting groove 12. This design can provide a more balanced and firmer clamping force, effectively preventing the dust cover 3 from being accidentally loosened or lost due to vehicle vibration or unintentional contact.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The above description is only used to illustrate the technical solutions of this utility model, and is not intended to limit it. Although the utility model has been described in detail with reference to the foregoing, those skilled in the art should understand that modifications can still be made to the foregoing technical solutions, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the various technical solutions of this utility model.

Claims

1. A fast charging interface sealing structure, comprising a lower cover (1) and an upper cover (2) that interlock, characterized in that: The lower cover (1) is provided with a tail plate (13) at its tail end, and the upper cover (2) is provided with a tail plug (22) that is inserted and matched with the tail plate (13) at its tail end. Both the tail plate (13) and the tail plug (22) have a pair of wire holes (16), which are connected to the horn-shaped mold hole (17). The lower cover (1), the upper cover (2), and the glue injection port (21) of the upper cover (2) form a glue injection chamber; After the glue is injected and cured, a mushroom-shaped locking structure is formed that wraps the wires and the circuit board, and the mushroom head is embedded in the anchoring cavity of the mold hole (17).

2. The fast charging interface sealing structure as described in claim 1, characterized in that: The tail plate (13) has a vertical tail groove (14), and the inner walls on both sides of the tail groove (14) are provided with slots (15). The tail plug (22) has buckle protrusions (24) on both sides, and the buckle protrusions (24) are engaged and fixed with the slot (15).

3. The fast charging interface sealing structure as described in claim 1, characterized in that: The lower cover (1) has an integrally formed extension arm (11) on the head side wall, and the extension arm (11) abuts against the upper cover (2) to form a limiting groove (12).

4. The fast charging interface sealing structure as described in claim 3, characterized in that: It also includes a dust cover (3), the inner wall of which is provided with a connector (31); The vertical arm of the connector (31) is inserted into the limiting groove (12), and the horizontal arm is attached to the outside of the extension arm (11).

5. The fast charging interface sealing structure as described in claim 4, characterized in that: The length of the horizontal arm is greater than the length of the limiting groove (12), and the horizontal arm and the vertical arm are made of elastic material.

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