Wire harness connection terminal with waterproof seal structure

Abstract

The utility model discloses a wire harness connection terminal with waterproof sealing structure belongs to electric connector technical field, including support shell, positioning mechanism and waterproof mechanism, the support shell of this terminal is equipped with notched two, and the positioning shell of positioning mechanism is equipped with notched one, waterproof mechanism includes the sealing ring of accommodating between two notches, outer thread and the locking nut of cooperation with outer thread, through the locking nut of abutting at support shell rotation, drive the positioning shell with outer thread and move, make notched one with notched two form two -way extrusion to sealing ring to realize reliable sealing, and this terminal still includes protection pipe and rubber housing, forms multiple protection, and its positioning mechanism still can be to internal conductive contact pin accurate positioning, the utility model discloses through the sealing structure of initiative two -way extrusion, solved the uneven sealing pressure of prior art, the problem of easy failure, has sealed extremely reliable, the beneficial effect of stable structure, comprehensive protection.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to wire harness connection terminals with a waterproof sealing structure. Background Technology

[0002] As an indispensable key component in modern industrial equipment, transportation vehicles, and electronic products, wire harness connection terminals undertake the important tasks of power transmission and signal exchange. With the increasing complexity of application scenarios, such as in automobile engine compartments, outdoor engineering machinery, or marine equipment, connection terminals are often exposed to harsh environments such as humidity, rain, or even immersion in water. Therefore, their waterproof sealing performance is directly related to the safety and stability of the entire electrical system.

[0003] Currently, to achieve waterproofing, conventional wire harness connectors typically have rubber sealing rings at the mating surfaces of the male and female ends. This sealing method relies heavily on passive compression during component assembly, where the sealing ring is compressed by the force of clips or screws to fill gaps. However, this passive sealing structure has inherent shortcomings. First, the assembly force is difficult to control precisely, potentially leading to uneven pressure on the sealing ring and weak points in localized areas. Second, during long-term use, the initial preload gradually decreases due to equipment vibration, temperature cycling, and the aging and creep of the sealing material itself, resulting in insufficient rebound of the sealing ring, reduced sealing performance, and ultimately, moisture can easily seep in. Furthermore, moisture can easily penetrate the connector along the outer sheath of the wire harness. Existing wire harness entry protection measures are usually quite simple and cannot provide durable and reliable protection.

[0004] In summary, the existing waterproof sealing structures of wire harness connection terminals are often unreliable and cannot maintain a stable sealing effect under long-term complex working conditions, posing safety hazards.

[0005] Therefore, this utility model proposes a wire harness connection terminal with a waterproof sealing structure to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the wire harness connection terminal, such as low reliability of waterproof sealing structure, easy failure at component joints, and weak protection at wire harness inlet, this utility model aims to provide a wire harness connection terminal with a waterproof sealing structure that has been improved and can effectively solve the above problems.

[0007] This utility model provides a wire harness connection terminal with a waterproof sealing structure, including a support shell, a positioning mechanism, and a waterproof mechanism for sealing the gap between the support shell and the positioning mechanism.

[0008] The support shell has a second slot, the positioning mechanism includes a positioning shell with a first slot opposite to the second slot, and the waterproof mechanism includes a sealing ring, an external thread, and a locking nut that engages with the external thread. The positioning shell and the external threaded component are an integral structure or a fixed connection structure. The sealing ring is housed between the first and second slots, and the locking nut abuts against the support shell. Its rotation can move the positioning shell along the axial direction of the external thread, thereby reducing the distance between the first and second slots and jointly squeezing the sealing ring to form a seal.

[0009] Preferably, the waterproof mechanism further includes a protective tube, which is sleeved on the outside of the wire harness to be connected to provide waterproof protection for the joint area between the wire harness and the terminal.

[0010] Preferably, the positioning mechanism further includes an insulating base and multiple conductive pins mounted on the insulating base.

[0011] Preferably, the positioning mechanism further includes a partition plate, which is disposed within the insulating base and is used to separate, position, and insulate adjacent conductive pins.

[0012] Preferably, the insulating base and partition plate are housed and fixed inside the positioning shell.

[0013] Preferably, the wiring harness connection terminal further includes a rubber housing, which covers the outside of the support housing, waterproof mechanism and positioning mechanism.

[0014] Preferably, the first groove is used to limit the sealing ring, and the second groove is used to support the sealing ring.

[0015] Preferably, the positioning shell provides an assembly reference for the insulating base and the conductive pin.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problems of uneven sealing pressure and easy failure due to vibration or aging at the joint of the connector in the prior art by setting two opposing slots located on the support shell and the positioning shell respectively, and using a threaded locking mechanism to drive the two slots to form bidirectional compression on the sealing ring. This achieves the technical effect of stable structure and extremely reliable sealing performance.

[0018] 2. This utility model, by combining a protective tube that wraps and protects the wire harness entrance and a rubber shell that covers the whole, in addition to the core extrusion seal, solves the problem of single waterproof solution and blind spots in the existing technology. It achieves a multi-dimensional waterproof and impact-resistant effect from the inside out, which greatly improves the overall reliability and environmental adaptability of the product.

[0019] 3. This utility model, by setting a positioning mechanism with an internal partition plate and an insulating base, accurately positions and insulates the conductive pins, solving the problem that the pursuit of complex waterproof structure in the prior art may affect the stability of electrical performance. It achieves the technical effect of achieving excellent waterproofing while taking into account the accuracy and high reliability of electrical connection. Attached Figure Description

[0020] Figure 1 This is a perspective view of the wire harness connection terminal with a waterproof sealing structure proposed in this utility model;

[0021] Figure 2 This is an exploded view of the positioning mechanism in the wire harness connection terminal with a waterproof sealing structure proposed in this utility model;

[0022] Figure 3 This is an exploded view of the waterproof mechanism in the wire harness connection terminal with a waterproof sealing structure proposed in this utility model;

[0023] Figure 4 This is an exploded view of the support shell in the wire harness connection terminal with a waterproof sealing structure proposed in this utility model.

[0024] Legend:

[0025] 1. Rubber outer shell; 2. Support shell; 3. Waterproof mechanism; 31. External thread; 32. Locking nut; 33. Groove one; 34. Groove two; 35. Sealing ring; 36. Protective tube; 4. Positioning mechanism; 41. Positioning shell; 42. Partition plate; 43. Insulating base; 44. Conductive pin. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in 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 a part of the embodiments of this utility model, and not all of them. 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.

[0027] Example:

[0028] Please refer to Figures 1 to 4 This utility model provides a wire harness connection terminal with a waterproof sealing structure, which aims to solve the problems of insufficient reliability of the sealing structure at the component joint and weak protection of the wire harness inlet in the prior art.

[0029] like Figures 1 to 4As shown, the wire harness connection terminal with a waterproof sealing structure includes a support shell 2 as the main body, and a positioning mechanism 4 that can be movably set relative to the support shell 2. It also includes a waterproof mechanism 3 for sealing and locking the support shell 2 and the positioning mechanism 4, and a rubber shell 1 covering all the aforementioned components. The support shell 2 provides an installation reference and support for the entire device, the positioning mechanism 4 is used to accommodate and fix the core components that realize electrical connection, the waterproof mechanism 3 ensures the sealing reliability of the joints of each component, and the rubber shell 1 provides overall external protection.

[0030] To solve the above-mentioned technical problems, the technical solution of this embodiment is to drive the positioning mechanism 4 and the support shell 2 to generate relative displacement through the waterproof mechanism 3, and to use the specific structures on the two to form a bidirectional and active compression fit relationship with the sealing ring 35.

[0031] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The sealing structure will be described in detail below:

[0032] One end of the support shell 2 has a slot 34 for supporting the sealing ring 35. The positioning mechanism 4 includes a positioning shell 41, which has a corresponding slot 33 for limiting the sealing ring 35. In the assembled state, the slot 33 and the slot 34 are positioned opposite each other. The waterproof mechanism 3 includes the sealing ring 35, an external thread 31, and a locking nut 32 that engages with the external thread 31. The positioning shell 41 and the component with the external thread 31 are an integral structure or a fixed connection structure, allowing them to move synchronously. During installation, the sealing ring 35 is accommodated and simultaneously embedded. The locking nut 32 abuts against the support shell 2 within the slot 33 and slot 34. When the locking nut 32 is rotated, its thread transmission relationship with the external thread 31 will drive the entire positioning shell 41 to move towards the support shell 2 along the axial direction of the external thread 31, thereby gradually reducing the distance between the slot 33 and slot 34. This double-slot opposing extrusion structure achieved by thread locking ensures that the sealing ring 35 can be subjected to uniform and sufficiently large extrusion force to undergo elastic deformation, thereby tightly filling all gaps between the positioning shell 41 and the support shell 2, achieving a highly reliable waterproof sealing effect.

[0033] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0034] As a preferred embodiment, to enhance the waterproof performance of the wire harness inlet, such as Figure 3 As shown, the waterproof mechanism 3 also includes a protective tube 36, which is sleeved on the outside of the wire harness to be connected, so as to provide physical wrapping waterproof protection for the joint area between the wire harness and the terminal.

[0035] As a preferred embodiment, in order to achieve a reliable electrical connection, such as Figure 2 As shown, the positioning mechanism 4 also includes an insulating base 43, multiple conductive pins 44, and a partition plate 42. The multiple conductive pins 44 are mounted on the insulating base 43, and the partition plate 42 is disposed inside the insulating base 43 to separate, position, and insulate adjacent conductive pins 44. The entire insulating base 43, which contains the conductive pins 44 and the partition plate 42, is housed and fixed inside the positioning shell 41. At the same time, the internal structure of the positioning shell 41 also provides a unified assembly reference for the installation of the insulating base 43 and the conductive pins 44.

[0036] In a preferred embodiment, in order to provide overall waterproof and impact-resistant protection, the terminal also includes a rubber housing 1, which covers the overall exterior of the support housing 2, waterproof mechanism 3 and positioning mechanism 4 after assembly.

[0037] As a preferred embodiment, in a specific structural implementation, the design of the slot 33 on the positioning shell 41 is used to circumferentially limit the sealing ring 35, while the design of the slot 34 on the support shell 2 provides a stable axial support surface for the sealing ring 35.

[0038] Working principle: During the installation of the sealing ring 35, the slot 33 on the positioning shell 41 and the slot 34 on the support shell 2 must be aligned simultaneously, so that the sealing ring 35 is embedded into both slots at the same time. Through the limiting of slot 33 and the support of slot 34, the sealing ring 35 forms an initial bidirectional positioning and sealing contact with the positioning shell 41 and the support shell 2, providing a stable structural foundation for subsequent compression sealing. Subsequently, by utilizing the thread engagement characteristics of the locking nut 32 and the external thread 31, rotating the locking nut 32 drives the component with the external thread 31 to move towards the support shell 2, thus positioning... As the shell 41 moves synchronously with the external thread 31 component, the distance between the first groove 33 and the second groove 34 gradually decreases. As the locking nut 32 continues to tighten, the first groove 33 and the second groove 34 together compress the sealing ring 35, causing the sealing ring 35 to undergo uniform elastic deformation and tightly fill the gap between the positioning shell 41, the support shell 2 and the component containing the external thread 31. Through the bidirectional compression of the first groove 33 and the second groove 34, the extrusion force of the thread engagement and the deformation sealing of the sealing ring 35, the waterproof sealing effect of the connection part is achieved, preventing water from seeping in from this gap.

[0039] The protective tube 36 is sleeved on the outside of the wire harness. After the wire harness is connected to the internal conductive pin 44, the protective tube 36 wraps around the joint area between the cable and the connector. Through physical wrapping, the joint of the wire harness is waterproofed and protected, preventing moisture from seeping into the connector along the wire harness.

[0040] The positioning mechanism 4 works simultaneously: In addition to participating in sealing through the slot 33, the positioning shell 41 also provides an assembly reference for the internal partition plate 42, insulating base 43 and conductive pins 44. The partition plate 42 separates and positions multiple conductive pins 44 within the insulating base 43, ensuring that each conductive pin 44 is arranged precisely and insulated from each other. Through the partitioning function of the partition plate 42 and the fixing function of the insulating base 43, the orderly arrangement and insulation isolation between the conductive pins 44 are achieved, laying the foundation for subsequent stable electrical connection.

[0041] The rubber shell 1 is fitted over the entire component to provide overall protection for the internal waterproof mechanism 3 and positioning mechanism 4. The rubber shell 1 further enhances the overall waterproof performance and impact resistance. Combined with the sealing of the connection part of the sealing ring 35 by the coordinated compression of the groove 1 33 and groove 2 34 in the waterproof mechanism 3, and the protection of the wire harness joint by the protective tube 36, as well as the precise positioning and insulation support of the conductive pin 44 by the positioning mechanism 4.

Claims

1. A wire harness connection terminal with a waterproof sealing structure, comprising a support shell (2), a positioning mechanism (4), and a waterproof mechanism (3) for sealing the gap between the support shell (2) and the positioning mechanism (4), characterized in that, The support shell (2) is provided with a second slot (34); The positioning mechanism (4) includes a positioning shell (41), and the positioning shell (41) is provided with a slot (33) that is opposite to the slot (34). The waterproof mechanism (3) includes a sealing ring (35), an external thread (31), and a locking nut (32) that is threadedly engaged with the external thread (31). The positioning shell (41) and the component with the external thread (31) are an integral structure or a fixed connection structure; The sealing ring (35) is accommodated between the first slot (33) and the second slot (34); The locking nut (32) abuts against the support shell (2), and its rotation can move the positioning shell (41) axially along the external thread (31), thereby reducing the distance between the first slot (33) and the second slot (34) and jointly squeezing the sealing ring (35) to form a seal.

2. The wire harness connection terminal with a waterproof sealing structure according to claim 1, characterized in that, The waterproof mechanism (3) also includes a protective tube (36), which is sleeved on the outside of the wire harness to be connected to provide waterproof protection for the joint area between the wire harness and the terminal.

3. The wire harness connection terminal with a waterproof sealing structure according to claim 1, characterized in that, The positioning mechanism (4) also includes an insulating base (43) and multiple conductive pins (44) mounted on the insulating base (43).

4. The wire harness connection terminal with a waterproof sealing structure according to claim 3, characterized in that, The positioning mechanism (4) further includes a partition plate (42), which is disposed in the insulating base (43) and is used to separate, position and insulate adjacent conductive pins (44).

5. The wire harness connection terminal with a waterproof sealing structure according to claim 4, characterized in that, The insulating base (43) and the partition plate (42) are housed and fixed inside the positioning shell (41).

6. The wire harness connection terminal with a waterproof sealing structure according to claim 1, characterized in that, It also includes a rubber shell (1), which covers the outside of the support shell (2), the waterproof mechanism (3) and the positioning mechanism (4).

7. The wire harness connection terminal with a waterproof sealing structure according to claim 1, characterized in that, The first slot (33) is used to limit the sealing ring (35), and the second slot (34) is used to support the sealing ring (35).

8. The wire harness connection terminal with a waterproof sealing structure according to claim 3, characterized in that, The positioning shell (41) provides an assembly reference for the insulating base (43) and the conductive pin (44).

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