Waterproof plug inner frame

By using white PBT material and gold-plated plug body in the inner frame of the plug, combined with components such as telescopic waterproof components and sealing rings, a multi-layer waterproof sealing structure is formed, which solves the problem of water ingress and short circuit in the inner frame of the plug in humid environments, and improves safety and stability.

CN224249036UActive Publication Date: 2026-05-15DONGGUAN CHUANGXU WIRE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN CHUANGXU WIRE CO LTD
Filing Date
2025-05-29
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The existing plug housing lacks a waterproof structure, which makes it prone to short circuits in conductive terminals when in humid environments or in contact with water, reducing safety during use.

Method used

The inner frame body is made of white PBT material, combined with a gold-plated solid plated insert body, and forms a multi-layer waterproof sealing structure through components such as telescopic waterproof components, sealing rings, and telescopic partitions, which isolate the inserts and enhance conductivity stability and corrosion resistance.

Benefits of technology

It effectively prevents the plug from short-circuiting due to water ingress in humid environments, improves safety and stability, enhances the plug's corrosion resistance, and increases ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plug inner frames, in particular to a waterproof plug inner frame, which comprises an inner frame body and a plug pin body, the plug pin body is mounted inside the inner frame body, the inner frame body is made of white PBT (polybutylene terephthalate) materials, a gold-plated solid layer is plated on the plug pin body, a telescopic waterproof component is arranged at the top of the inner frame body, and the telescopic waterproof component is connected with the plug pin body. The telescopic waterproof assembly comprises a connecting ring, and the top of the connecting ring is provided with a telescopic ring. According to the utility model, the inner frame body, the pin body, the connecting ring, the telescopic ring, the sealing ring, the telescopic partition plate and the like in the telescopic waterproof assembly are arranged, the telescopic waterproof assembly is matched with the inner frame body and the pin body, and the telescopic partition plate can isolate the pins of the pin body; through a multi-layer waterproof sealing structure, the device solves the problem of short circuit caused by water entering parts such as the conductive terminal of the plug inner frame in a humid environment or a scene in contact with a water source, and improves the use safety.
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Description

Technical Field

[0001] This utility model relates to the field of plug inner frame technology, specifically to a waterproof plug inner frame. Background Technology

[0002] The plug inner frame is a supporting structural component inside the plug, usually made of insulating material. It is mainly used to fix the plug's conductive terminals, wires and other components, ensuring the accurate position of each component and avoiding short circuits or poor contact. At the same time, it provides mechanical support for the plug, ensuring the stability and safety of its overall structure. It is an important component for the plug to realize its electrical connection function.

[0003] Utility model patent CN212114072U discloses a plug inner frame, including a mounting bracket and a connecting assembly. The mounting bracket has a first end face and a second end face arranged opposite each other, and a mounting hole penetrating the first and second end faces. The connecting assembly is disposed in the mounting hole and includes a mounting base, a rivet head, and a connecting foot. The mounting base is disposed in the mounting hole and has an open cavity. The rivet head and the connecting foot are respectively disposed at the two open ends of the open cavity. The rivet head and the connecting foot are electrically connected. One end of the rivet head has a connector with a groove. The end of the connecting foot away from the rivet head extends to the first end face. The beneficial effect of this utility model is that by using a concave groove structure to install the copper wire of the wire, it effectively prevents the copper wire of the wire from being exposed on the outside of the connector, improves the installation effect of the plug, and thus improves product quality.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: the existing plug inner frame does not have a waterproof structure. When the plug inner frame is used in a humid environment or in a scenario where it is easily exposed to water, the lack of a waterproof structure can lead to water entering the conductive terminals and other parts, causing short circuits and reducing the safety of use. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a waterproof plug inner frame, which can effectively solve the problem that the plug inner frame in the existing technology lacks a waterproof structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a waterproof plug inner frame, including: an inner frame body and a plug body, wherein the plug body is installed inside the inner frame body, the inner frame body is made of white PBT material, and the plug body is plated with a solid gold plating layer.

[0008] The top of the inner frame body is provided with a telescopic waterproof component, which includes a connecting ring, a telescopic ring installed on the top of the connecting ring, a sealing ring installed on the top of the telescopic ring, and a telescopic partition installed on the top of the inner frame body. The outer side of the telescopic partition is installed with the inner side of the sealing ring, and the telescopic partition isolates the pins of the insert body separately.

[0009] The above solution utilizes a telescopic waterproof assembly consisting of a connecting ring, a telescopic ring, a sealing ring, and a telescopic partition. The telescopic partition isolates the pins of the insert body, while the inner frame body is made of insulating, high-temperature resistant white PBT material and the insert body is plated with a solid gold plating. This creates a multi-layer waterproof sealing structure, isolating the pins to prevent water ingress, improving conductivity and corrosion resistance, solving the problem of water ingress and short circuits in humid environments, and enhancing safety in use.

[0010] Furthermore, a connecting hole is provided at the top of the inner frame body, a connecting rod is installed at the bottom of the connecting ring, the surface of the connecting rod is movably connected to the interior of the connecting hole, and a fixing ring is threaded to the other end of the surface of the connecting rod.

[0011] The above solution involves opening a connecting hole at the top of the inner frame body, installing a connecting rod at the bottom of the connecting ring and movably connecting it to the connecting hole, and threading a fixing ring to the other end of the connecting rod. This allows for the secure installation of the connecting ring, and the threaded connection enables the connection ring to be fixed in place. Furthermore, it allows for convenient replacement of the connecting ring and its connecting parts when they are damaged during actual use.

[0012] Furthermore, a telescopic block is installed on the outer side of the telescopic partition, the outer side of the telescopic block is installed with the inner side of the telescopic ring, the top of the outer side of the telescopic partition is installed with the inner side of the sealing ring, and the bottom of the outer side of the telescopic partition is installed with the inner side of the connecting ring.

[0013] The above solution involves installing telescopic blocks on the outside of the telescopic partition, with the outside of the telescopic blocks connected to the inside of the telescopic ring, the top of the telescopic partition connected to the inside of the sealing ring, and the bottom connected to the inside of the connecting ring. This allows the telescopic partition to expand and contract with the telescopic ring, adapting to spatial changes in different scenarios while maintaining sealed connections between components to ensure waterproof performance.

[0014] Furthermore, a positioning block is installed at the bottom of the telescopic partition, and a positioning groove is provided at the top of the inner frame body, with the surface of the positioning block located on the inner wall of the positioning groove.

[0015] The above solution involves installing a positioning block at the bottom of the telescopic partition and opening a positioning groove at the top of the inner frame body. The surface of the positioning block is located on the inner wall of the positioning groove, which can accurately position the telescopic partition, ensuring its accurate installation position and enabling the plug-in isolation and waterproof structure to function correctly.

[0016] Furthermore, an elastic plate is mounted on the surface of the positioning block, and the bottom of the surface of the elastic plate is located on the inner wall of the positioning groove.

[0017] The above solution involves installing an elastic plate on the surface of the positioning block, with the bottom of the elastic plate located on the inner wall of the positioning groove. The elasticity of the elastic plate provides buffering and fastening force during positioning, thereby enhancing the stability and sealing of the telescopic partition installation.

[0018] Furthermore, a number of movable blocks are installed on the outer side of the inner frame body, and the movable blocks are arranged at equal intervals, with the outer side of the movable blocks arranged in an arc shape.

[0019] By installing several equally spaced, arc-shaped movable blocks on the outside of the inner frame body, the friction force when holding the plug can be increased, making it easier to plug and unplug and improving ease of use.

[0020] Furthermore, a connecting groove is provided on the top of the inner frame body, and a rubber ring is installed at the bottom of the connecting ring, with the surface of the rubber ring embedded and connected to the inner wall of the connecting groove.

[0021] The above solution involves opening a connecting groove at the top of the inner frame body, installing a rubber ring at the bottom of the connecting ring and embedding it into the inner wall of the connecting groove, and using the elasticity of the rubber ring to seal the connection gap, thereby further preventing moisture from seeping into the inner frame body from the bottom of the connecting ring.

[0022] Furthermore, a fixing groove is provided at the bottom of the inner frame body, the surface of the fixing ring is threadedly connected to the inner wall of the fixing groove, and a sealing cap is movably embedded at the bottom of the fixing groove.

[0023] The above solution involves creating a fixing groove at the bottom of the inner frame body, threading the fixing ring surface to the inner wall of the fixing groove, and movably embedding a sealing cover at the bottom of the fixing groove. This fixes the bottom of the insert body, enhances stability through the threaded connection, and seals the fixing groove with the sealing cover to prevent water from entering from the bottom and protect the internal components.

[0024] Beneficial effects

[0025] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0026] I. This utility model, by setting up components such as the inner frame body, insert body, connecting ring, telescopic ring, sealing ring, and telescopic partition in the telescopic waterproof assembly, and through the cooperation between the telescopic waterproof assembly and the inner frame body and insert body, and the telescopic partition's ability to isolate the insert body's pins, achieves the effect of solving the problem of short circuits caused by water ingress into the conductive terminals of the plug and inner frame in humid environments or in contact with water sources, thereby improving the safety of use.

[0027] II. This utility model, by setting up components such as a connecting hole, a connecting rod, a fixing ring, a connecting groove, and a rubber ring, and through the threaded connection between the connecting rod and the connecting hole and the fixing ring, and the embedded connection between the rubber ring and the connecting groove, enables the connecting ring to be installed securely and seal the connection gap. This achieves the goal of enhancing the installation stability and sealing of the telescopic waterproof component, and preventing water from seeping into the inner frame body from the bottom of the connecting ring.

[0028] Third, by setting up components such as a movable block, and through the installation relationship between the arc-shaped movable block and the outer side of the inner frame body, the movable block can increase the friction when the plug is held, thereby improving the ease of use by facilitating plugging and unplugging operations. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0032] Figure 3 This is a split-up, bottom-view schematic diagram of the present invention;

[0033] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0034] Figure 5 For the present utility model Figure 3 Enlarged diagram of point B in the middle.

[0035] Reference numerals: 1. Inner frame body; 2. Insertion frame body; 3. Telescopic waterproof component; 31. Connecting ring; 32. Telescopic ring; 33. Sealing ring; 34. Telescopic partition; 4. Connecting hole; 5. Connecting rod; 6. Fixing ring; 7. Telescopic block; 8. Positioning block; 9. Positioning groove; 10. Elastic plate; 11. Moving block; 12. Connecting groove; 13. Rubber ring; 14. Fixing groove; 15. Sealing cover. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] The present invention will be further described below with reference to the embodiments.

[0038] See attached document Figure 1-5 A waterproof plug inner frame includes: an inner frame body 1 and a plug body 2. The plug body 2 is installed inside the inner frame body 1. The inner frame body 1 is made of white PBT material. The plug body 2 is plated with a solid gold plating layer. The plug body 2 is a 2.35*28 gold-plated solid-CX-19 male terminal. The inner frame body 1 serves as a support structure for the plug and is used to fix the plug body 2. It is made of insulating and high-temperature resistant material to ensure structural stability and electrical safety. The plug body 2 realizes the electrical connection function. The gold plating layer can improve conductivity and corrosion resistance.

[0039] The top of the inner frame body 1 is provided with a telescopic waterproof component 3, which includes a connecting ring 31, a telescopic ring 32 installed on the top of the connecting ring 31, and a sealing ring 33 installed on the top of the telescopic ring 32. The top of the inner frame body 1 is provided with a telescopic partition 34, which is installed on the outer side of the telescopic partition 34 and the inner side of the sealing ring 33. The telescopic partition 34 isolates the insertion pins of the insertion body 2. The telescopic waterproof component 3 forms a multi-layer waterproof sealing structure, which isolates the insertion body 2 to prevent water from entering, adapts to spatial changes in different scenarios, and improves waterproof performance. The connecting rod 5 and the fixing ring 6 are connected by threads to securely install the connecting ring 31, which is easy to disassemble and replace. The positioning block 8 and the elastic plate 10 accurately position the telescopic partition 34, which enhances the stability and sealing of the installation. The moving block 11 increases the friction when the inner frame body 1 is held, which is easy to insert and remove. The rubber ring 13 seals the gap between the connecting ring 31 and the inner frame body 1 to prevent water from seeping in. The sealing cover 15 seals the bottom of the fixing groove 14 to prevent water from entering from the bottom.

[0040] The inner frame body 1 has a connecting hole 4 at its top. A connecting rod 5 is installed at the bottom of the connecting ring 31. The surface of the connecting rod 5 is movably connected to the interior of the connecting hole 4. A fixing ring 6 is threaded to the other end of the connecting rod 5. A telescopic block 7 is installed on the outer side of the telescopic partition 34. The outer side of the telescopic block 7 is installed on the inner side of the telescopic ring 32. The top of the outer side of the telescopic partition 34 is installed on the inner side of the sealing ring 33. The bottom of the outer side of the telescopic partition 34 is installed on the inner side of the connecting ring 31. A positioning block 8 is installed at the bottom of the telescopic partition 34. A positioning groove 9 is opened at the top of the inner frame body 1. The surface of the positioning block 8 is located on the inner wall of the positioning groove 9. An elastic plate 10 is installed on the surface of block 8. The bottom of the surface of the elastic plate 10 is located on the inner wall of the positioning groove 9. A movable block 11 is installed on the outer side of the inner frame body 1. Several movable blocks 11 are arranged at equal intervals. The outer side of the movable block 11 is arc-shaped. A connecting groove 12 is opened on the top of the inner frame body 1. A rubber ring 13 is installed on the bottom of the connecting ring 31. The surface of the rubber ring 13 is embedded and connected to the inner wall of the connecting groove 12. A fixing groove 14 is opened on the bottom of the inner frame body 1. The surface of the fixing ring 6 is threaded and connected to the inner wall of the fixing groove 14. A sealing cover 15 is movably embedded on the bottom of the fixing groove 14.

[0041] Working principle: When the plug is used in a humid environment or in contact with water, in the initial state, the telescopic partition 34 is pre-positioned by the positioning block 8 embedded in the positioning groove 9 and the elastic plate 10 tightly against the inner wall of the groove. The connecting rod 5 passes through the connecting hole 4 and is threadedly locked by the fixing ring 6. The rubber ring 13 is embedded in the connecting groove 12 to form an initial seal. The telescopic ring 32 naturally extends, and the telescopic plate is movably connected by the telescopic block 7. When inserted, the socket applies pressure to the sealing ring 33, driving the telescopic ring 32 to compress and deform, which in turn drives the telescopic partition 34 to extend and retract. The telescopic block 7 slides along the inner side of the telescopic ring 32, so that the partition is tightly fitted with the sealing ring 33 and the connecting ring 31. The pin isolation space is adjusted with the amount of compression. At the same time, the inner side of the sealing ring 33 and the telescopic block 7 are in close contact with the telescopic ring 32. The top of the partition 34 is squeezed to form a top seal. The telescopic ring 32 elastically absorbs the impact and adapts to the difference in the depth of the insertion hole. The fixed ring 6 and the fixed groove 14 are threaded to enhance stability and cooperate with the sealing cover 15 to form a bottom defense line. During continuous use, the telescopic partition 34 separates the insertion pins to avoid conductive paths. The rubber ring 13 compresses and fills the gaps, and the elastic plate 10 eliminates the gaps to form an air pressure sealing layer. When pulled out, the external pressure is released, and the telescopic ring 32 and the elastic plate 10 rebound to drive the partition to reset. All components return to their initial positions. The telescopic waterproof component 3 remains loose and sealed. The sealing ring 33 covers the top of the insertion pin, the partition maintains isolation, and the rubber ring 13 and the sealing cover 15 block the channel, so that the interior of the inner frame body 1 forms a closed space to block moisture.

[0042] The insulating and high-temperature resistant white PBT inner frame body 1 and the gold-plated solid insert body 2 work together to further improve the performance of the plug. The PBT inner frame body 1 provides stable support and protection for the internal structure with its excellent insulation and high-temperature resistance. The gold-plated solid insert body 2 uses the good conductivity and corrosion resistance of the gold plating layer to ensure the stability of conductivity, while greatly enhancing the overall corrosion resistance of the plug and extending the service life of the plug.

[0043] In terms of waterproofing, the rubber ring 13 is embedded in the connecting groove 12, which can tightly seal the connecting gap at the top and prevent water from seeping in from the top. The bottom fixing groove 14 is connected to the fixing ring 6 by threads and is sealed with a sealing cap 15, forming a waterproof barrier at the bottom. The double waterproofing measures at the top and bottom work together to effectively block the intrusion of water.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A waterproof plug inner frame, comprising an inner frame body (1) and a plug body (2), characterized in that: The insert body (2) is installed inside the inner frame body (1). The inner frame body (1) is made of white PBT material, and the insert body (2) is plated with a solid gold plating layer. The top of the inner frame body (1) is provided with a telescopic waterproof component (3), the telescopic waterproof component (3) includes a connecting ring (31), the top of the connecting ring (31) is provided with a telescopic ring (32), the top of the telescopic ring (32) is provided with a sealing ring (33), the top of the inner frame body (1) is provided with a telescopic partition (34), the outer side of the telescopic partition (34) is installed with the inner side of the sealing ring (33), and the telescopic partition (34) isolates the pins of the insert body (2) separately.

2. The waterproof plug inner frame according to claim 1, characterized in that, The top of the inner frame body (1) is provided with a connecting hole (4), and the bottom of the connecting ring (31) is provided with a connecting rod (5). The surface of the connecting rod (5) is movably connected to the inside of the connecting hole (4), and the other end of the surface of the connecting rod (5) is threaded with a fixing ring (6).

3. The waterproof plug inner frame according to claim 1, characterized in that, A telescopic block (7) is installed on the outer side of the telescopic partition (34). The outer side of the telescopic block (7) is installed on the inner side of the telescopic ring (32). The top of the outer side of the telescopic partition (34) is installed on the inner side of the sealing ring (33). The bottom of the outer side of the telescopic partition (34) is installed on the inner side of the connecting ring (31).

4. The waterproof plug inner frame according to claim 1, characterized in that, The bottom of the telescopic partition (34) is equipped with a positioning block (8), and the top of the inner frame body (1) is provided with a positioning groove (9). The surface of the positioning block (8) is located on the inner wall of the positioning groove (9).

5. A waterproof plug inner frame according to claim 4, characterized in that, An elastic plate (10) is mounted on the surface of the positioning block (8), and the bottom of the surface of the elastic plate (10) is located on the inner wall of the positioning groove (9).

6. A waterproof plug inner frame according to claim 1, characterized in that, The outer side of the inner frame body (1) is equipped with a movable block (11), and there are several movable blocks (11) arranged at equal distances. The outer side of the movable block (11) is arranged in an arc shape.

7. A waterproof plug inner frame according to claim 1, characterized in that, The top of the inner frame body (1) is provided with a connecting groove (12), and a rubber ring (13) is installed at the bottom of the connecting ring (31). The surface of the rubber ring (13) is embedded and connected to the inner wall of the connecting groove (12).

8. A waterproof plug inner frame according to claim 2, characterized in that, The bottom of the inner frame body (1) is provided with a fixing groove (14), the surface of the fixing ring (6) is threadedly connected to the inner wall of the fixing groove (14), and a sealing cover (15) is movably embedded in the bottom of the fixing groove (14).