A wiring harness waterproof interface assembly
By employing a double-sealing ring structure and an insulation detection terminal design, the sealing reliability issue of the wire harness waterproof connector is resolved, achieving efficient waterproofing and timely fault detection, thereby improving the reliability and safety of the wire harness interface assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN ZHENYI ELECTRONICS CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-23
AI Technical Summary
The sealing reliability of existing wire harness waterproof connectors depends on assembly pressure, which is easily affected by vibration and temperature changes, leading to a decline in sealing performance. Furthermore, it is difficult to detect minor leaks in time, increasing the difficulty of troubleshooting and maintenance costs.
It adopts a double sealing ring structure, including a fixed plug and a movable plug. The sealing ring failure is detected by an insulation detection terminal, and a multi-layer sealing ring design is combined to improve waterproof performance.
It achieves highly efficient waterproof performance for wire harness interface components and can promptly detect sealing failures, reducing the risk of malfunctions and maintenance costs.
Smart Images
Figure CN224400766U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic wire harnesses, and more specifically to a waterproof interface component for wire harnesses. Background Technology
[0002] In fields such as industrial automation, automotive electronics, and new energy equipment, wire harnesses serve as the core carriers of signal and power transmission. Their working environments are often accompanied by corrosive factors such as moisture, dust, and oil. As a critical node in wire harness connections, the waterproof performance of the wire harness connector directly determines the reliability and safety of the entire electrical system. Once the connector's waterproofing fails, moisture intrusion will cause oxidation of the contacts and a decrease in insulation resistance. This can lead to signal interference and malfunctions, or even short circuits, equipment downtime, and in severe cases, fires, electric shocks, and other safety accidents.
[0003] Currently, most existing waterproof connectors for wire harnesses employ a single-seal ring structure to achieve waterproofing. This structure typically features a rubber seal ring on the mating surface of the connector housing. The axial pressure during connector mating causes the seal ring to elastically deform, filling the mating gap and blocking water flow. However, this single-seal ring structure has significant drawbacks: Firstly, the sealing reliability of a single seal ring is highly dependent on the stability of the assembly pressure. During long-term use, factors such as vibration and temperature changes can cause the seal ring to experience elastic fatigue or loosening, leading to decreased sealing performance and making it difficult to meet long-term waterproofing requirements under complex operating conditions. Secondly, when a small leak occurs in the single seal ring, moisture can accumulate hidden inside the connector, going undetected until a significant malfunction occurs. By then, irreversible component damage has often occurred, increasing the difficulty of troubleshooting and maintenance costs. Utility Model Content
[0004] In view of the above problems, this application provides a wire harness waterproof interface assembly to solve the technical problems of poor waterproof performance and inability to detect water ingress in a timely manner.
[0005] To achieve the above objectives, this application provides a waterproof connector assembly for wire harnesses, comprising:
[0006] A fixed connector is fixedly installed on an electrical appliance, including a first connector slot and a protrusion disposed in the middle of the first connector slot, wherein a first conductive contact is disposed in the middle of the protrusion; two spaced insulation detection terminals are disposed at the bottom of the first connector slot, and the insulation detection terminals are connected to insulation detection wires;
[0007] The movable connector includes a male connector that is adapted to the first plug groove, the middle of the male connector having a second plug groove adapted to the protrusion, and the middle of the second plug groove having a second conductive contact adapted to the first conductive contact.
[0008] The male connector has a first sealing ring on its front end face and a second sealing ring on the top of the protruding post. When the movable connector is inserted into the fixed connector, the first sealing ring seals the bottom of the first connector groove and the insulation detection terminal, and the second sealing ring seals the bottom of the second connector groove.
[0009] Furthermore, a third sealing ring is provided on the inner circumference of the top of the first insertion groove, and the third sealing ring is sealed to the outer circumference of the male connector.
[0010] Furthermore, a locking hook is provided on the front side of the fixed connector;
[0011] The movable connector has an elastic groove on its side near the fixed connector that is adapted to the locking hook. When the movable connector is inserted into the fixed connector, the elastic groove engages with the locking hook.
[0012] Furthermore, a fixing flange for fixing connection with the electrical appliance is provided in the middle of the fixing connector. The fixing flange protrudes from the middle of the fixing connector to the side and is provided with a plurality of fixing holes.
[0013] Furthermore, the outer periphery of the male connector is provided with multiple positioning ribs, and the inner sidewall of the first insertion groove is provided with a positioning groove that matches the positioning ribs.
[0014] Furthermore, the electrical appliance is a power battery for a new energy vehicle.
[0015] Furthermore, the end of the first conductive contact away from the movable plug is provided with a sheet-like conductive connection portion, and a through hole is provided in the middle of the conductive connection portion.
[0016] Unlike existing technologies, the above-mentioned waterproof interface assembly for wire harnesses includes a fixed connector and a movable connector. The assembly includes a first connector groove, a protrusion, and a second connector groove. The first connector groove is sealed by a first sealing ring, and the second connector groove is sealed by a second sealing ring, thus providing excellent waterproof sealing performance. Furthermore, the bottom of the first connector groove has two spaced-apart insulation detection terminals, which are also sealed by the first sealing ring. Therefore, the failure of the first sealing ring can be detected by measuring the resistance between the insulation detection terminals.
[0017] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description
[0018] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.
[0019] In the accompanying drawings of the instruction manual:
[0020] Figure 1 This is a schematic diagram of the structure of the waterproof interface assembly for the wire harness described in a specific embodiment;
[0021] Figure 2 This is a schematic diagram of the structure of the fixed connector described in the specific embodiment;
[0022] Figure 3 This is a front view of the fixed connector described in the specific embodiment;
[0023] Figure 4 This is a schematic diagram of the structure of the movable connector described in a specific embodiment;
[0024] The reference numerals used in the above figures are explained as follows:
[0025] 1. Fixed connector; 11. Locking hook; 12. Conductive connection part; 13. Insulation detection line; 14. Connecting groove; 15. Protruding post; 10. Fixed flange; 100. Fixed hole; 121. First conductive contact; 131. Insulation detection terminal; 141. Bottom of the connecting groove; 142. Third sealing ring; 143. Positioning groove; 151. Second sealing ring;
[0026] 2. Movable connector; 21. Flexible slot; 22. Male connector; 23. First sealing ring; 24. Second insertion slot; 25. Second conductive contact; 221. Positioning rib; Detailed Implementation
[0027] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.
[0028] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0029] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0030] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.
[0031] In this application, 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 actual quantity, hierarchy or order relationship between these entities or operations.
[0032] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.
[0033] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0034] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0035] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0036] Please see Figures 1 to 4 This embodiment provides a waterproof connector assembly for wire harnesses, which can be applied to fields with high waterproofing requirements, such as automotive electronics and new energy equipment. This waterproof connector assembly further improves the waterproofing performance between wire harness connectors and can promptly detect whether waterproofing has failed or the waterproofing level has decreased.
[0037] like Figure 1 As shown, in this embodiment, the waterproof connector assembly for the wiring harness includes a fixed connector 1 and a movable connector 2. The fixed connector 1 is fixedly installed on the electrical appliance and electrically connected to its internal components. The movable connector 2 is detachably plugged into the fixed connector 1 and electrically connected to other devices. Therefore, the electrical connection between the electrical appliance and other devices can be achieved through the fixed connector 1 and the movable connector 2. In this embodiment, the electrical appliance is a power battery for a new energy vehicle. Figure 2 As shown, to facilitate the electrical connection between the first conductive contact 121 and the interior of the appliance, a sheet-like conductive connecting portion 12 is provided at the end of the first conductive contact 121 away from the movable plug 2, and a through hole is provided in the middle of the conductive connecting portion 12. The conductive connecting portion 12 can increase the connection area, and the through hole can be used to install bolt fasteners, thereby improving the firmness of the connection between the conductive connecting portion and the interior of the appliance.
[0038] like Figure 2 As shown, the fixed connector 1 includes a first insertion groove 14 and a protrusion 15 disposed in the middle of the first insertion groove 14. A first conductive contact 121 is disposed in the middle of the protrusion 15. The protrusion 15 can be a cylindrical protrusion, and the protrusion 15 and the first insertion groove 14 can be made of insulating plastic and can be integrally formed. The first conductive contact 121 can be made of conductive metals such as copper and aluminum, and the shape of the first conductive contact 121 can be a socket shape.
[0039] like Figure 2 and Figure 3 As shown, the bottom 141 of the first insertion slot is provided with two spaced insulation detection terminals 131, and the insulation detection terminals 131 are connected to insulation detection lines 13. The insulation detection terminals 131 can also be made of conductive metals such as copper and aluminum.
[0040] like Figure 4 As shown, the movable connector 2 includes a male connector 22 adapted to the first insertion groove 14. The male connector 22 has a second insertion groove 24 in its middle portion that adapts to the protrusion 15. A second conductive contact 25 adapted to the first conductive contact 121 is located in the middle portion of the second insertion groove 24. The second conductive contact 25 can be cylindrical. A first sealing ring 23 is provided on the front end face of the male connector 22, and a second sealing ring 151 is provided on the top of the protrusion 15.
[0041] When the movable connector 2 is inserted into the fixed connector 1 (i.e.) Figure 1 (As shown in the diagram), the first conductive contact and the second conductive contact are electrically connected. The first sealing ring 23 seals the bottom 141 of the first insertion slot and the insulation detection terminal 131, that is, the first sealing ring 23 covers the two insulation detection terminals 131, and the second sealing ring 151 seals the bottom 141 of the second insertion slot. Therefore, when the liquid (e.g., water) in the fixed insertion socket 1 does not enter the first sealing ring 23 (i.e., the first sealing ring fails to seal), the two insulation detection terminals 131 are insulated from each other, so the resistance is theoretically infinite. However, when the first sealing ring fails to seal, the resistance between the two insulation detection terminals 131 will significantly decrease (e.g., less than 1K ohms). Therefore, by detecting the resistance value between the two insulation detection terminals 131, it is possible to detect whether the first sealing ring 23 has failed to seal.
[0042] In this embodiment, a first insertion groove, a protrusion, and a second insertion groove are provided between the fixed insertion base and the movable insertion joint, and a first sealing ring and a second sealing ring are also provided, thus greatly improving the waterproof performance between the fixed insertion base and the movable insertion joint.
[0043] like Figure 2 and Figure 3 As shown, in this embodiment, a third sealing ring 142 is provided on the inner circumference of the top of the first insertion groove 14, and the third sealing ring 142 is sealed to the outer circumference of the male connector 22. When the movable connector 2 is inserted into the fixed connector 1, the inner side of the third sealing ring 142 is tightly fitted to the outer circumference of the male connector 22, thereby reducing the amount of liquid entering the first insertion groove and thus further improving the waterproof performance between the fixed connector and the movable connector.
[0044] like Figure 1 , Figure 2 and Figure 4 As shown, a locking hook 11 is provided on the front side of the fixed connector 1; an elastic groove 21 adapted to the locking hook 11 is provided on the side of the movable connector 2 near the fixed connector 1. When the movable connector 2 is inserted into the fixed connector 1, the elastic groove 21 engages with the locking hook 11. The elastic groove 21 and the locking hook 11 can be made of plastic. The elastic groove 21 and the locking hook 11 can prevent the fixed connector and the movable connector from loosening after insertion, thereby ensuring their sealing performance.
[0045] like Figure 2 As shown, to facilitate fixing the fixed connector to the surface of the appliance, a fixing flange 10 for fixed connection with the appliance is provided in the middle of the fixed connector 1. The fixing flange 10 protrudes from the middle of the fixed connector 1 to the side, and a plurality of fixing holes 100 are provided on the fixing flange 10. During installation, the fixed connector 1 can be fixed to the surface of the appliance by passing bolts through the fixing holes 100.
[0046] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the outer periphery of the male connector 22 is provided with multiple positioning ribs 221, and the inner sidewall of the first insertion groove 14 is provided with positioning grooves 143 that are adapted to the positioning ribs 221. The positioning ribs 221 can be formed by radially protruding from the outer periphery of the male connector 22, and the width of the positioning grooves 143 is greater than or equal to the thickness of each positioning rib 221. The movable connector can be accurately inserted into the fixed connector using the positioning ribs 221 and the positioning grooves 143.
[0047] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.
Claims
1. A waterproof connector assembly for a wire harness, characterized in that, include: A fixed connector is fixedly installed on an electrical appliance, including a first connector slot and a protrusion disposed in the middle of the first connector slot, wherein a first conductive contact is disposed in the middle of the protrusion; two spaced insulation detection terminals are disposed at the bottom of the first connector slot, and the insulation detection terminals are connected to insulation detection wires; The movable connector includes a male connector that is adapted to the first plug groove, the middle of the male connector having a second plug groove adapted to the protrusion, and the middle of the second plug groove having a second conductive contact adapted to the first conductive contact. The male connector has a first sealing ring on its front end face and a second sealing ring on the top of the protruding post. When the movable connector is inserted into the fixed connector, the first sealing ring seals the bottom of the first connector groove and the insulation detection terminal, and the second sealing ring seals the bottom of the second connector groove.
2. The waterproof interface assembly for wire harnesses according to claim 1, characterized in that, A third sealing ring is provided on the inner circumference of the top of the first insertion slot, and the third sealing ring is sealed to the outer circumference of the male connector.
3. The waterproof interface assembly for wire harnesses according to claim 1 or 2, characterized in that, A locking hook is provided on the front side of the fixed connector; The movable connector has an elastic groove on its side near the fixed connector that is adapted to the locking hook. When the movable connector is inserted into the fixed connector, the elastic groove engages with the locking hook.
4. The waterproof interface assembly for wire harnesses according to claim 1 or 2, characterized in that, The fixed connector has a fixing flange in the middle for fixing to the electrical appliance. The fixing flange protrudes from the middle of the fixed connector to the side and has multiple fixing holes.
5. The waterproof interface assembly for wire harnesses according to claim 1, characterized in that, The male connector has multiple positioning ribs on its outer periphery, and the inner wall of the first insertion slot has a positioning groove that matches the positioning ribs.
6. The waterproof interface assembly for wire harnesses according to claim 1, characterized in that, The electrical appliance is a power battery for new energy vehicles.
7. The waterproof interface assembly for wire harnesses according to claim 6, characterized in that, The first conductive contact has a sheet-like conductive connection portion at the end away from the movable plug, and a through hole is provided in the middle of the conductive connection portion.