A wire waterproof structure and processing method thereof

Abstract

The present invention discloses a waterproof structure for a conductor and a processing method thereof, comprising a conductor body; the conductor body comprises a wire core and an insulating sheath, one or more sections of the conductor body are provided with a rubber-coated portion for exposing the wire core after circumferentially cutting the insulating sheath; the rubber-coated portion is provided with a rubber-coated waterproof body, which completely wraps the rubber-coated portion and extends a distance to the insulating sheaths on both sides; the rubber-coated waterproof body is arranged outside the rubber-coated portion by injection molding; the length of both ends of the rubber-coated waterproof body exceeding the end of the rubber-coated portion is greater than or equal to 10 mm. By stripping the insulating sheath and directly performing low-pressure injection molding, the cost of opening a mold to customize the plug is saved, and at the same time, the safety of waterproofing is greatly improved, and the air in the gap between the insulating sheath and the wire core is effectively blocked from entering the main body, which greatly improves the waterproof performance of the conductor.

Description

Technical Field

[0001] The invention relates to the technical field of wire processing, and in particular to a wire waterproof structure and a processing method thereof. Background Art

[0002] With the progress and development of society, there are more and more ways for electronic products to communicate with the outside world, including more and more ways to use wire harnesses to connect with the outside world. The resulting wire harness protection and wire harness waterproofing issues have also become a difficulty in the product design process.

[0003] In the prior art, an electronic waterproof aerial docking socket is used to waterproof and seal the wiring harness. This solution requires the male and female sockets of the aerial docking socket to be customized for different wiring harnesses, which has a high customization cost. In addition, the waterproof sealing performance depends on the adaptability of the socket, and the defect rate is high.

[0004] Another method uses waterproof connectors to connect the wiring harnesses, and uses universal waterproof connectors at the ends of the wiring harnesses to seal the wiring harnesses. This solution has the problem of poor riveting during the riveting process between the wiring harness and the socket, resulting in air leakage at the joint between the wiring harness and the connector, the risk of sealing failure, and a high defective rate.

[0005] With the continuous improvement of the requirements for waterproof performance, the structure in the prior art cannot further improve the sealing of the wiring harness. Since there is a certain gap between the conductor and the insulating sheath of the wiring harness itself, during the use and production air tightness testing, the gas will enter the main component along the gap between the conductor and the insulating sheath of the wiring harness, thereby causing the failure of air tightness. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a wire waterproof structure and a processing method thereof with low cost, strong sealing and high yield.

[0007] The present invention is achieved by the following methods:

[0008] A wire waterproof structure comprises a wire body 1; the wire body 1 comprises a wire core 11 and an insulating sheath 12, one or more sections of the wire body 1 are provided with a rubber-coated portion 13 for exposing the wire core 11 after circumferentially cutting the insulating sheath 12; a rubber-coated waterproof body 2 is provided on the rubber-coated portion 13, the rubber-coated waterproof body 2 completely wraps the rubber-coated portion 13 and extends a distance toward the insulating sheath 12 on both sides; the rubber-coated waterproof body 2 is arranged outside the rubber-coated portion 13 by injection molding; the length of the two ends of the rubber-coated waterproof body 2 exceeding the end of the rubber-coated portion 13 is greater than or equal to 10 mm.

[0009] Furthermore, the rubber-coated waterproof body 2 is wrapped and arranged outside the rubber-coated part 13 by low-pressure injection molding through a low-pressure injection mold; the low-pressure injection mold includes an upper mold 31 and a lower mold 32 that are mutually engaged; a receiving space 33 for accommodating the rubber-coated waterproof body 2 is provided between the upper mold 31 and the lower mold 32; and a glue injection port 34 is provided at the center of the upper mold 31.

[0010] Furthermore, the upper mold 31 and the lower mold 32 are provided with clamping parts 35 on both sides of the accommodating space 33 for matching with the outside of the wire body 1 ; when the upper mold 31 and the lower mold 32 are clamped, the clamping parts 35 are tightly fitted with the wire body 1 .

[0011] A method for processing a conductor waterproof structure comprises the following steps:

[0012] S1: Performing ring cutting and stripping of the insulation sheath on one or more sections of the external conductor body that needs to be sealed and waterproof to form a rubber-encapsulated portion;

[0013] S2: Select a low-pressure injection mold of appropriate size to ensure that the length of the accommodation space in the low-pressure injection mold is greater than or equal to 20 mm longer than the length of the rubber-encapsulated part; clamp the upper mold and the lower mold of the low-pressure injection mold at the position of the rubber-encapsulated part, and make the rubber-encapsulated part located in the center of the accommodation space;

[0014] S3: Inject silicone or other injection moldable colloids through the injection port at the center of the upper mold at low pressure;

[0015] S4: After the injected colloid is cooled and solidified, the low-pressure injection mold is removed.

[0016] The beneficial effects of the present invention are as follows: by stripping off the insulating sheath, low-pressure injection molding is directly performed, thereby eliminating the cost of opening a mold to customize the plug, while greatly improving the waterproof safety, effectively blocking the air from entering the main component through the gap between the insulating sheath and the wire core, and greatly improving the waterproof performance of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The structure of the present invention uses a state diagram;

[0019] Figure 2 A schematic diagram of the structure of the present invention;

[0020] Figure 3The structural diagram of the conductor body of the present invention;

[0021] Figure 4 A schematic diagram of the upper mold structure of the present invention;

[0022] Figure 5 Schematic diagram of the lower mold structure of the present invention; DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example:

[0027] like Figure 1-5As shown, a wire waterproof structure comprises a wire body 1; the wire body 1 comprises a wire core 11 and an insulating sheath 12, and is characterized in that: one or more sections of the wire body 1 are provided with a rubber-coated portion 13 for exposing the wire core 11 after circumferential cutting of the insulating sheath 12; the rubber-coated portion 13 is provided with a rubber-coated waterproof body 2, which completely wraps the rubber-coated portion 13 and extends a distance to the insulating sheath 12 on both sides; the rubber-coated waterproof body 2 is arranged outside the rubber-coated portion 13 by injection molding; the length of the two ends of the rubber-coated waterproof body 2 exceeding the end of the rubber-coated portion 13 is greater than or equal to 10 mm.

[0028] Furthermore, the rubber-coated waterproof body 2 is wrapped and arranged outside the rubber-coated part 13 by low-pressure injection molding through a low-pressure injection mold; the low-pressure injection mold includes an upper mold 31 and a lower mold 32 that are mutually engaged; a receiving space 33 for accommodating the rubber-coated waterproof body 2 is provided between the upper mold 31 and the lower mold 32; and a glue injection port 34 is provided at the center of the upper mold 31.

[0029] Furthermore, the upper mold 31 and the lower mold 32 are provided with clamping parts 35 on both sides of the accommodating space 33 for matching with the outside of the wire body 1 ; when the upper mold 31 and the lower mold 32 are clamped, the clamping parts 35 are tightly fitted with the wire body 1 .

[0030] Furthermore, the rubber-coated portion 13 can be separately arranged on the conductor body 1 for waterproofing a single conductor; in actual use, the rubber-coated portion 13 is arranged at a position close to the main body 4, which can further reduce the amount of air entering the gap between the insulating sheath and the wire core, ensure air tightness, and improve the safety of the main body 4; even if the seal between the conductor body 1 and the conventional joint fails, the rubber-coated waterproof body 2 can ensure that no water enters the inside of the main body 4; the rubber-coated waterproof body 2 further strengthens the rubber-coated portion 13, and during the injection process of the injection moldable colloid, the gap between the wire core 11 itself is effectively filled and expanded to the periphery. When the injection molding pressure is increased, the injection moldable colloid can not only fill the gap inside the wire core 11 at the rubber-coated portion 13, but also continue to flow to both sides for more sufficient filling; the use of low-pressure injection molding can reduce costs and operating difficulties, and can also obtain excellent waterproof effects and safety, especially when used on the wires of battery components, the waterproof performance of the wires can reach IP68 level;

[0031] In addition to improving the waterproofness of the conductor body 1, the rubber-coated waterproof body 2 can also further increase the strength of the conductor body 1; when multiple rubber-coated waterproof bodies 2 are arranged at intervals and injection molding is performed using appropriate pressure, the injection-molded colloid can fill the internal gaps of the entire conductor body, greatly improving the safety and strength of the conductor body.

[0032] A method for processing a conductor waterproof structure comprises the following steps:

[0033] S1: Performing ring cutting and stripping of the insulation sheath on one or more sections of the external conductor body that needs to be sealed and waterproof to form a rubber-encapsulated portion;

[0034] S2: Select a low-pressure injection mold of appropriate size to ensure that the length of the accommodation space in the low-pressure injection mold is greater than or equal to 20 mm longer than the length of the rubber-encapsulated part; clamp the upper mold and the lower mold of the low-pressure injection mold at the position of the rubber-encapsulated part, and make the rubber-encapsulated part located in the center of the accommodation space;

[0035] S3: Inject silicone or other injection moldable colloids through the injection port at the center of the upper mold at low pressure;

[0036] S4: After the injected colloid is cooled and solidified, the low-pressure injection mold is removed.

[0037] When processing the wire to be processed, the device used for circumcision can be a knife or an existing fast peeling device. The neatness of the incision does not require special requirements, which reduces the difficulty of operation for workers; it is only necessary to ensure that the length of the two ends of the rubber-coated waterproof body 2 exceeding the end of the rubber-coated part 13 is greater than or equal to 10mm, which can improve the connection strength between the rubber-coated waterproof body 2 and the insulating outer skin 12, and avoid sealing failure during bending;

[0038] The low-pressure injection mold in the present invention is made of steel or other materials with excellent low-pressure injection molding performance, wherein a corresponding injection port is provided on the top of the upper mold of the low-pressure injection mold, and glue is injected through the injection port after the upper mold and the lower mold are closed by low pressure blocking. After the injection of glue is completed, the upper and lower molds are opened, and the gate is automatically broken during the mold opening process.

[0039] The low-pressure injection molding colloid of the present invention adopts silica gel or other colloid that can be injection molded with excellent waterproof and insulating properties.

[0040] The present invention directly performs low-pressure injection molding by stripping off the insulating sheath, thereby eliminating the cost of opening a mold to customize the plug, and at the same time greatly improving the waterproof safety, effectively blocking the air from entering the main component through the gap between the insulating sheath and the wire core, and greatly improving the waterproof performance of the wire.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A conductor waterproof structure, comprising a conductor body (1); the conductor body (1) comprises a wire core (11) and an insulating sheath (12), characterized in that: One or more sections of the conductor body (1) are provided with a rubber-coated portion (13) for exposing the wire core (11) after the insulating outer skin (12) is circumcised; the rubber-coated portion (13) is provided with a rubber-coated waterproof body (2), the rubber-coated waterproof body (2) completely wraps the rubber-coated portion (13) and extends a distance toward the insulating outer skin (12) on both sides, and the rubber-coated waterproof body (2) fills the gap between the wire core (11) and the insulating outer skin (12) on both sides of the rubber-coated portion (13); the rubber-coated waterproof body (2) is arranged outside the rubber-coated portion (13) by injection molding; the length of both ends of the rubber-coated waterproof body (2) exceeding the end of the rubber-coated portion (13) is greater than or equal to 10 mm; the rubber-coated waterproof body (2) is arranged outside the rubber-coated portion (13) by low-pressure injection molding through a low-pressure injection mold.

2. A wire waterproof structure according to claim 1, characterized in that: The low-pressure injection mold comprises an upper mold (31) and a lower mold (32) that are locked together; an accommodating space (33) for accommodating the rubber-coated waterproof body (2) is provided between the upper mold (31) and the lower mold (32); and a rubber injection port (34) is provided at the center of the upper mold (31).

3. A wire waterproof structure according to claim 2, characterized in that: The upper mold (31) and the lower mold (32) are provided with clamping parts (35) on both sides of the accommodating space (33) and matched with the outside of the wire body (1); when the upper mold (31) and the lower mold (32) are clamped, the clamping parts (35) and the wire body (1) are tightly fitted.

4. A method for processing a conductor waterproof structure, characterized in that: The following steps are involved: S1: Performing ring cutting and stripping of the insulation sheath on one or more sections of the external conductor body that needs to be sealed and waterproof to form a rubber-encapsulated portion; S2: Select a low-pressure injection mold of appropriate size to ensure that the length of the accommodation space in the low-pressure injection mold is greater than or equal to 20 mm longer than the length of the rubber-encapsulated part; clamp the upper mold and the lower mold of the low-pressure injection mold at the position of the rubber-encapsulated part, and make the rubber-encapsulated part located in the center of the accommodation space; S3: Inject silicone or other moldable colloids through the injection port at the center of the upper mold at low pressure; increase the injection pressure, and the moldable colloid fills the gap inside the wire core at the rubber coating part, and continues to flow to both sides for more adequate filling; S4: After the injected colloid is cooled and solidified, the low-pressure injection mold is removed.

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