A wire end connector

Abstract

The utility model discloses a kind of wire end connectors, including plastic shell, electricity connection component and back cover;The inside of plastic shell is provided with the plug-in cavity of axial through, electricity connection component includes terminal assembly and coaxial cable, terminal assembly is adapted to install in the inside of plug-in cavity, and its tail end is electrically connected with coaxial cable;Back cover is sleeved in the tail end opening of plug-in cavity, is formed by two identical half cover bodies, the splicing side of half cover body is equipped with half-ring clamping part, after two half cover bodies are closed, half-ring clamping part is split to form annular clamping structure, coaxial cable is positioned radially, avoid the problem that air tightness is not good when coaxial cable is bundled, pulled or shaken.The wire end connector provided by the utility model, its back cover is split type structure design, and uses mortise and tenon type inlay cooperation structure, without preassembling with coaxial cable, more suitable for automatic machine production process, can improve production capacity and product yield, reduce operation difficulty and maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, and in particular relates to a wire end connector. Background Technology

[0002] As the core physical network for interconnecting vehicle electrical equipment, automotive wiring harnesses have specific requirements for the production efficiency and ease of use and maintenance of their matching wire-end connectors. The rear cover, a key component in the wire-end connector for securing and sealing coaxial cables, is primarily used to hold the coaxial cable adjacent to the sealing gasket in place. This prevents the coaxial cable from excessively compressing one side of the sealing gasket's inner wall during subsequent bundling processes or pulling / shaking, which could create a gap between the coaxial cable and the other side of the sealing gasket's inner wall, leading to connector seal failure. The structural design of the rear cover directly determines the sealing reliability, mass production compatibility, and ease of subsequent operation of the wire-end connector.

[0003] Currently, most automotive connectors adopt an integrated back cover structure. Although this structure has a certain structural strength and can fix and seal the cable base, due to structural limitations, it needs to be pre-assembled before the electrical components are assembled. It cannot be assembled at the back end of the connector, making it difficult to adapt to the mass production requirements of automated machines. It can only rely on manual assembly, which restricts production capacity and is prone to affecting product yield due to human operation. Especially when the connector has multiple coaxial cables, and the integrated back cover is a non-removable structure, subsequent rework, repair or cable replacement requires breaking the back cover to remove the cables. This not only prevents the reuse of existing parts and causes material waste, but also increases the difficulty of operation. In the scenario of finished wire harness bundling, the cumbersome disassembly and assembly operation is even more prominent.

[0004] Therefore, it is urgent to optimize the existing back cover structure to achieve rear-end assembly of the connector to adapt to automated production, while ensuring the cable fixing effect and connector sealing reliability, and at the same time improving the ease of disassembly and assembly of the back cover and reducing production and subsequent maintenance costs. Utility Model Content

[0005] The purpose of this invention is to provide a wire end connector with high mechanical strength, good sealing performance, easy automated production, and easy assembly, disassembly, and maintenance, so as to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wire connector includes a plastic housing, a power connection assembly, and a rear cover. The plastic housing has a mating cavity and a sealing cavity at its two ends along its length, respectively. An axially extending mounting cavity connects the mating cavity and the sealing cavity. The power connection assembly includes a terminal assembly and a coaxial cable. The terminal assembly is fitted into the mounting cavity, and its tail end is electrically connected to the coaxial cable. The rear cover is fitted over the tail opening of the sealing cavity and is formed by joining two identical half-covers. Both sides of the body are provided with semi-annular clamping parts. After the two half-covers are joined together, the semi-annular clamping parts are joined to form a complete annular clamping structure, which is used to radially limit the coaxial cable. A sealing gasket is provided between the rear cover and the plastic shell. The sealing gasket is sleeved on the outside of the coaxial cable and is interference-fitted with the inner wall of the sealing cavity. A limiting protrusion extends from the side of the half-cover toward the sealing cavity. The limiting protrusion is adapted to the inner wall of the sealing cavity to realize the axial limiting of the sealing gasket and the radial limiting of the half-cover and the plastic shell.

[0008] Furthermore, each of the half-covers has an integrally formed mating protrusion and a mating recess on its mating end face. When the two half-covers are mated together, the mating protrusion of one half-cover and the mating recess of the other half-cover fit together to achieve the positioning and splicing of the two half-covers.

[0009] Furthermore, the end of the fitting protrusion is integrally formed with an anti-detachment latching part, and the fitting recess is provided with an anti-detachment latching groove that is adapted to the anti-detachment latching part.

[0010] Furthermore, the width of the anti-detachment latching part is greater than that of the fitting protrusion, so that the fitting protrusion and the anti-detachment latching part together form a T-shaped limiting structure, thereby achieving radial locking of the two half-covers.

[0011] Furthermore, the semi-annular clamping part extends towards the sealing cavity and is provided with a thickened clamping section, which is used to hold the outer wall of the coaxial cable adjacent to the sealing gasket.

[0012] Furthermore, the axial thickness of the thickened clamping section is consistent with that of the limiting protrusion, and the two are integrally formed with reinforcing ribs.

[0013] Furthermore, the outer peripheral wall of the half-cover is integrally formed with at least one elastic latch, and the outer peripheral wall of the tail end of the plastic shell is integrally formed with a corresponding snap-fit ​​bracket. The half-cover engages with the snap-fit ​​bracket through the elastic latch, thereby achieving a detachable and fixed connection between the rear cover and the plastic shell.

[0014] Furthermore, there are multiple power connection components, which are arranged side by side along the width direction of the plastic shell. The number of semi-circular clamping parts on each half-cover corresponds one-to-one with the number of coaxial cables, and each semi-circular clamping part is arranged side by side along the width direction of the plastic shell.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] The wire-end connector provided by this utility model has a split-type back cover design and adopts a tenon-and-mortise interlocking structure. The coaxial cable does not need to be pre-installed with the back cover. The coaxial cable and terminal assembly can be riveted together by an automatic machine and inserted into the plastic shell. Finally, the back cover is assembled, which makes the assembly more convenient and more compatible with the production process of the automatic machine. This not only improves the production capacity of the wire-end connector, but also reduces the assembly error caused by human operation, effectively improving the product yield. In addition, in subsequent rework and repair, it can be disassembled and reassembled without damaging the back cover, avoiding the material waste caused by the destructive disassembly and assembly of the integrated back cover. It greatly reduces the difficulty of operation and maintenance costs, and is especially suitable for disassembly and assembly scenarios after the finished wire harness is bundled.

[0017] In addition, the integrated design of the limiting protrusion and the thickened clamping section not only improves the strength of the two structures themselves, avoiding structural deformation after long-term use, and preventing the coaxial cable from excessively pulling the sealing gasket when bundled or shaken, thus avoiding poor airtightness; it also makes the thickened clamping section and the limiting protrusion form an integrated mechanical support structure, dispersing the external force acting on the coaxial cable to the plastic shell, greatly improving the overall structural rigidity, and ensuring the stability and durability of the overall connector structure. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0019] Figure 1 A front view of a wire connector provided in an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the back structure of a wire connector provided for an embodiment of this utility model;

[0021] Figure 3 An exploded view of a wire-end connector provided for an embodiment of this utility model;

[0022] Figure 4 A cross-sectional view of a wire-end connector provided for an embodiment of this utility model;

[0023] Figure 5This is a schematic diagram of the structure of the rear cover of a wire-end connector provided in an embodiment of the present utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-Plastic housing, 101-Plug-in cavity, 102-Sealed cavity, 103-Mounting cavity, 104-Snap-on mounting platform, 2-Terminal assembly, 3-Coaxial cable, 4-Sealing gasket, 401-Through hole, 5-Rear cover, 50-Half cover, 501-Semi-annular clamping part, 501a-Thickened clamping section, 502-Matching protrusion, 502a-Anti-detachment snap-on part, 503-Matching recess, 503a-Anti-detachment snap-on groove, 504-Limiting protrusion, 505-Reinforcing rib, 506-Elastic latch. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] like Figures 1 to 5 As shown, this embodiment of the utility model provides a wire-end connector, including a plastic housing 1, a power connection assembly, a back cover 5, and a sealing gasket 4. Specifically:

[0028] The plastic housing 1 is an integral rigid plastic structure injection molded as the main mounting base of the connector. Its interior has insertion cavities 101 for mating with the adapter connector and sealing cavities 102 for mounting sealing structures at both ends along its length. Multiple mounting cavities 103 are horizontally arranged side-by-side and axially penetrated between the insertion cavities 101 and the sealing cavities 102 along the connector width. In this embodiment, there are three mounting cavities 103 for mounting the terminal assembly 2 of the electrical connection component. A snap-fit ​​bracket 104 is integrally formed on the outer peripheral wall of the tail end of the plastic housing 1 (the end closest to the coaxial cable 3). In this embodiment, there are two snap-fit ​​brackets 104, symmetrically arranged on both sides of the tail end of the plastic housing 1, specifically with an outwardly protruding inverted snap structure to achieve axial fixation of the rear cover 5.

[0029] In this embodiment, the number of the power connection components is the same as the number of the mounting cavities 103. The three power connection components are arranged horizontally and side by side at equal intervals along the width direction of the plastic housing 1 within the mounting cavity 103 to accommodate the requirements of synchronous transmission of multiple signals. Each power connection component includes a terminal component 2 and a coaxial cable 3. The outer wall of the terminal component 2 is precisely fitted to the inner wall of the mounting cavity 103, so that the terminal component 2 can be firmly snapped into the inside of the mounting cavity 103. The front end of the terminal component 2 is used to connect and conduct with the adapter connector, and the tail end of the terminal component 2 is electrically connected to the coaxial cable 3 to ensure the stability of signal transmission. The extension direction of the three coaxial cables 3 is consistent with the axial direction of the plastic housing 1, and all extend beyond the tail end of the plastic housing 1.

[0030] The sealing gasket 4 is made of rubber and is located between the rear cover 5 and the plastic housing 1. The outer contour of the sealing gasket 4 is adapted to the inner contour of the sealing cavity 102, and the outer wall of the sealing gasket 4 is interference-fitted with the inner wall of the sealing cavity 102. The sealing gasket 4 has three through holes 401 arranged side by side and adapted to the outer diameter of the coaxial cable 3. The inner wall of the through holes 401 is tightly fitted with the outer wall of the coaxial cable 3 to achieve a sealing fit between the rear cover 5, the plastic housing 1 and the coaxial cable 3, preventing external moisture and dust from entering the connector from the tail end and ensuring the airtightness of the connector.

[0031] The rear cover 5 is integrally injection molded from plastic. It is fitted onto the tail opening of the sealing cavity 102 of the plastic housing 1, serving to fix the coaxial cable 3 and, in conjunction with the sealing gasket 4, to achieve a sealed protection for the sealing cavity 102. The rear cover 5 is formed by joining two identical half-covers 50 together (i.e., rotating one half-cover 50 180° around the axis of the coaxial cable 3 and then joining it with the other half-cover 50 to form the complete rear cover 5). Only one set of molds is needed for production, effectively reducing manufacturing costs. Each half-cover 50 has two symmetrical elastic latches 506 integrally formed on both sides of its outer peripheral wall. The elastic latches 506 have slots. When the half-cover 50 is assembled with the plastic housing 1, the slots on the elastic latches 506 engage with the inverted snap structure on the latching bracket 104, thereby locking the half-cover 50 and the plastic housing 1 together. In addition, each half-cover 50 has a semi-annular clamping part 501 recessed inward on the splicing side. In this embodiment, there are three semi-annular clamping parts 501 on each half-cover 50, which correspond one-to-one with the number of coaxial cables 3, and are arranged side by side at equal intervals along the width direction of the plastic shell 1. After the two half-covers 50 are joined together, the semi-annular clamping parts 501 on both sides can be spliced ​​together to form a complete annular clamping structure. The inner diameter of the annular clamping structure is adapted to the outer diameter of the coaxial cable 3, and is used to clamp and fix the outer wall of the coaxial cable 3 to achieve radial positioning of the coaxial cable 3. The coaxial cable 3 does not need to be pre-installed with the back cover 5 before being connected to the terminal assembly 2. The coaxial cable 3 can be easily riveted to the terminal assembly 2 by an automatic machine, and then inserted into the mounting cavity 103 of the plastic housing 1. Finally, the back cover 5 is assembled, which reduces manual operation steps and effectively improves production capacity and product yield. In addition, during subsequent maintenance and replacement, the back cover 5 can be disassembled and reassembled without damaging it, making the operation more convenient and the maintenance cost lower.

[0032] To ensure the rear cover 5 can more securely clamp and fix the coaxial cable 3, each half-cover 50 has an integrally formed mating protrusion 502 and a mating recess 503 on its mating end face. The main body of the mating protrusion 502 is a cuboid protrusion structure, and the end of the mating protrusion 502 has an integrally formed anti-detachment latching part 502a. The width of the anti-detachment latching part 502a is larger than that of the mating protrusion 502, so that the mating protrusion 502 and the anti-detachment latching part 502a together form a T-shaped limiting structure. The mating recess 503 is a groove structure adapted to the mating protrusion 502, and the groove structure has an anti-detachment slot 503a adapted to the anti-detachment latching part 502a, so that the inner wall contour of the mating recess 503 is completely adapted to the outer shape of the mating protrusion 502 and the anti-detachment latching part 502a. When the two half-covers 50 are fitted together along the axial direction of the coaxial cable 3, the fitting protrusion 502 (fitting recess 503) of one half-cover 50 and the fitting recess 503 (fitting protrusion 502) of the other half-cover 50 fit together to achieve precise positioning and splicing. Through the anti-detachment locking part 502a, the two half-covers 50 are radially locked and form a radially stable clamping of the coaxial cable 3, preventing the coaxial cable 3 from moving radially and the rear cover 5 from opening.

[0033] To further improve the structural strength and reliability of the back cover 5, the half cover 50 extends axially toward the sealing cavity 102 to form a limiting protrusion 504. The outer contour of the limiting protrusion 504 is adapted to the inner wall size of the sealing cavity 102. When the half cover 50 is placed over the tail of the plastic shell 1, the limiting protrusion 504 can be inserted into the sealing cavity 102, limiting the axial displacement of the sealing gasket 4 and the radial limiting between the half cover 50 and the plastic shell 1, thereby improving the structural firmness of the back cover 5 assembly. In addition, the semi-annular clamping part 501 also extends axially to form a thickened clamping section 501a on the side facing the sealing cavity 102. The thickened clamping section 501a, as an extension of the semi-annular clamping part 501, has an inner diameter precisely matched to the outer diameter of the coaxial cable 3. This allows it to tightly grip the outer wall of the coaxial cable 3 adjacent to the sealing gasket 4, reducing the shaking displacement of the coaxial cable 3 and preventing the risk of poor airtightness between the coaxial cable 3 and the sealing gasket 4 due to excessive radial compression of the sealing gasket 4 by the coaxial cable 3. The axial thickness of the thickened clamping section 501a is consistent with the axial thickness of the limiting protrusion 504, and a reinforcing rib 505 is integrally formed between the thickened clamping section 501a and the limiting protrusion 504. This forms an integrated mechanical support structure, improving the structural rigidity of both and the overall structural stability of the connector, preventing structural deformation after long-term use.

[0034] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wire-end connector, characterized in that, include: A plastic housing (1) has a plug-in cavity (101) and a sealing cavity (102) respectively opened at the beginning and end of its length direction. An installation cavity (103) is axially opened between the plug-in cavity (101) and the sealing cavity (102). A power connection assembly, comprising a terminal assembly (2) and a coaxial cable (3), wherein the terminal assembly (2) is adapted to be installed inside the mounting cavity (103), and the tail end of the terminal assembly (2) is electrically connected to the coaxial cable (3); The rear cover (5) is fitted onto the tail opening of the sealing cavity (102). It is formed by splicing two identical half-covers (50). Each half-cover (50) has a semi-annular clamping part (501) on the splicing side. After the two half-covers (50) are joined together, the semi-annular clamping part (501) is spliced ​​together to form a complete annular clamping structure, which is used to radially limit the coaxial cable (3). A sealing gasket (4) is provided between the rear cover (5) and the plastic shell (1). The sealing gasket (4) is sleeved on the outside of the coaxial cable (3) and has an interference fit with the inner wall of the sealing cavity (102). The half cover (50) extends towards the sealing cavity (102) and has a limiting protrusion (504). The limiting protrusion (504) is adapted to the inner wall of the sealing cavity (102) to realize the axial limiting of the sealing gasket (4) and the radial limiting of the half cover (50) and the plastic shell (1).

2. A wire connector according to claim 1, characterized in that: Each of the half-covers (50) has an integrally formed mating protrusion (502) and mating recess (503) on its mating end face. When the two half-covers (50) are mated together, the mating protrusion (502) of one half-cover (50) and the mating recess (503) of the other half-cover (50) fit together to achieve the positioning and splicing of the two half-covers (50).

3. A wire connector according to claim 2, characterized in that: The end of the fitting protrusion (502) is integrally formed with an anti-detachment latching part (502a), and the fitting recess (503) is provided with an anti-detachment latching groove (503a) that is adapted to the anti-detachment latching part (502a).

4. A wire connector according to claim 3, characterized in that: The width of the anti-detachment latching part (502a) is greater than that of the fitting protrusion (502), so that the fitting protrusion (502) and the anti-detachment latching part (502a) together form a T-shaped limiting structure to achieve radial locking of the two half-covers (50).

5. A wire connector according to claim 1, characterized in that: The semi-annular clamping part (501) extends towards the sealing cavity (102) and is provided with a thickened clamping section (501a). The thickened clamping section (501a) is used to hold the outer wall of the coaxial cable (3) adjacent to the sealing gasket (4).

6. A wire connector according to claim 5, characterized in that: The thickened clamping section (501a) has the same axial thickness as the limiting protrusion (504), and the two are integrally formed with reinforcing ribs (505).

7. A wire connector according to claim 1, characterized in that: The outer peripheral wall of the half cover (50) is integrally formed with at least one elastic latch (506), and the outer peripheral wall of the tail end of the plastic shell (1) is integrally formed with a corresponding snap-fit ​​bracket (104). The half cover (50) is snapped into the snap-fit ​​bracket (104) through the elastic latch (506) to realize the detachable fixed connection between the rear cover (5) and the plastic shell (1).

8. A wire connector according to any one of claims 1-7, characterized in that: There are multiple electrical connection components, which are arranged side by side along the width direction of the plastic shell (1). The number of semi-annular clamping parts (501) on each half cover (50) corresponds one-to-one with the number of electrical connection components. Each semi-annular clamping part (501) is arranged side by side along the width direction of the plastic shell (1).

Images