A connector with a metal housing grounding terminal position

Abstract

The utility model discloses a kind of connector with metal shell grounding terminal position, it is related to connector technical field, comprising: insulating body, the terminal accommodating cavity being extended along its axial direction is opened in the insulating body inside;Terminal group, the terminal group is embedded in the terminal accommodating cavity, and one end of the terminal group forms first connection end, and the other end forms second connection end;Metal shell, the metal shell is fixedly sleeved in the outer peripheral surface of the insulating body, and outer peripheral wall of the metal shell is integrally formed with outer thread structure;Grounding terminal position, the grounding terminal position is protruded in the outer peripheral wall of the metal shell, and the grounding terminal position has wiring part;Avoid the problem of not tin that easily appears in the direct welding metal shell outer peripheral wall in prior art, and the stable ground passage is guaranteed by the conductive structure of independent wiring part.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a connector with a metal shell and a grounding terminal. Background Technology

[0002] In the circuit connection system of electronic devices, connectors are key components for signal and current transmission, and their grounding performance directly determines the circuit's anti-interference capability and operational safety. Because the connector's metal shell has good conductivity, in practical applications, an external grounding wire is usually connected to the metal shell to achieve grounding through the metal shell. Therefore, a stable connection between the metal shell and the grounding wire is one of the core requirements of connector design.

[0003] However, existing connectors do not have a dedicated grounding terminal structure on their metal housings. When making a grounding connection, the external grounding wire must be directly soldered to the outer wall of the metal housing. But the outer wall of the metal housing is often smooth, and some housing surfaces may have oxide or plating layers. Direct soldering easily leads to problems with solderability: this not only results in low soldering efficiency but also causes poor contact between the grounding wire and the metal housing, preventing the formation of a stable conductive path. This ultimately causes the grounding function to fail, affecting the reliability of the entire circuit system and making it difficult to meet the high-quality requirements of electronic devices for stable and convenient grounding connections.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A connector with a metal housing grounding terminal block, comprising: An insulating body, wherein a terminal receiving cavity extending axially is provided inside the insulating body; A terminal group, wherein the terminal group is embedded in the terminal receiving cavity, and one end of the terminal group forms a first connecting end and the other end forms a second connecting end; A metal outer shell is fixedly sleeved on the outer peripheral surface of the insulating body, and the outer peripheral wall of the metal outer shell is integrally formed with an external thread structure; A grounding terminal is provided, which protrudes from the outer peripheral wall of the metal casing and has a wiring portion.

[0007] As a further embodiment of this utility model: the metal housing has a flange portion, the grounding terminal is disposed on the flange portion, the flange portion is disposed around the second connection end, and the inner peripheral side of the flange portion is formed with a plug interface for inserting a matching connector, the plug interface corresponding to the second connection end.

[0008] As a further embodiment of this utility model: the wiring part includes a first column and a second column, the first column is vertically disposed on the flange, the second column is vertically disposed at the end of the first column away from the flange, and the outer diameter of the second column is smaller than the outer diameter of the first column. The second column is used for welding connection with the external grounding wire.

[0009] As a further embodiment of this utility model: the first column and the flange are integrally formed, or the first column is welded to the flange.

[0010] As a further embodiment of this utility model: the terminal group includes a plurality of pins, and the surface of the pins is provided with a gold plating layer.

[0011] As a further embodiment of this utility model: the first connecting end is located inside the terminal receiving cavity, and the second connecting end is disposed away from the terminal receiving cavity and located outside the insulating body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, the grounding terminal is specifically located on the flange of the metal casing, and the wiring part adopts a stepped structure of "first column + second column". The second column can be directly welded to the external grounding wire. On the one hand, this avoids the problem of poor soldering that easily occurs when directly welding the outer wall of the metal casing in the prior art, and ensures a stable grounding path through the conductive structure of the independent wiring part. On the other hand, the stepped structure can position the grounding wire, and the space of the flange part provides sufficient space for welding operations, reducing the difficulty of operation and improving the efficiency of grounding connection.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a structural schematic diagram from one perspective of the present invention; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This is a structural schematic diagram from another perspective of this utility model.

[0016] The reference numerals and names in the figure are as follows: 1. Insulating body; 2. Terminal receiving cavity; 3. First connecting end; 4. Second connecting end; 5. Metal shell; 6. External thread structure; 7. Grounding terminal position; 8. Wiring part; 9. Flange part; 10. Plug interface; 11. First column; 12. Second column; 13. Terminal group. Detailed Implementation

[0017] 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 protection scope of the present utility model.

[0018] Please see Figure 1-3 In this embodiment of the utility model, a connector with a metal shell 5 and a grounding terminal 7 is provided. The connector is mainly composed of four parts: an insulating body 1, a terminal group 13, a metal shell 5, and a grounding terminal 7. The components work together to realize signal / current transmission and grounding functions. The insulating body 1 serves as the basic load-bearing structure, the terminal group 13 is responsible for the core conductive transmission, the metal shell 5 provides protection and grounding carrier, and the grounding terminal 7 is specially adapted to external grounding wire connection.

[0019] The insulating body 1 is made of insulating material, and its core function is to insulate and isolate the internal terminal group 13 to prevent signal interference or short circuits. The insulating body 1 has a terminal receiving cavity 2 extending along its axial direction. The cavity size of the terminal receiving cavity 2 is adapted to the outer dimensions of the terminal group 13 to ensure that the terminal group 13 can be stably installed in the cavity without shaking. At the same time, the axial extension direction of the terminal receiving cavity 2 is consistent with the overall signal transmission direction of the connector, reserving adaptation space for the two connection ends of the terminal group 13.

[0020] Terminal assembly 13 is embedded in terminal receiving cavity 2 of insulating body 1. It is made of metal material with excellent conductivity and is composed of multiple pins. Each pin maintains a preset spacing and is tightly fitted to insulating body 1 to ensure fixed position. One end of each pin forms a first connecting end 3, and the other end forms a second connecting end 4. The first connecting end 3 is located in terminal receiving cavity 2 and is used to make conductive connection with wires or circuit boards inside the device. The inner wall of terminal receiving cavity 2 can form a protective enclosure for the first connecting end 3 to prevent external impurities from affecting the connection stability. The second connecting end 4 is set away from terminal receiving cavity 2 and extends to the outside of insulating body 1 as an interface end for mating with external adapter connectors.

[0021] To further improve the conductivity and service life of terminal group 13, each pin is plated with gold. The thickness of the gold plating is set according to the actual conductivity requirements, which can reduce the contact resistance of the pin surface, reduce signal transmission loss, and isolate the pin substrate from air, preventing the substrate from oxidizing and rusting, thus extending the service life of terminal group 13.

[0022] The metal shell 5 is made of a metal material with certain strength and conductivity. It is fixedly sleeved on the outer circumference of the insulating body 1. The sleeve can be installed by interference fit, bonding or snap connection, etc., to ensure that there is no relative displacement between the metal shell 5 and the insulating body 1. It can form physical protection for the insulating body 1 and the internal terminal group 13, and reduce the impact of external impact, vibration or impurities on the internal structure.

[0023] The outer peripheral wall of the metal shell 5 is integrally formed with an external thread structure 6. The pitch, tooth profile and other parameters of the external thread structure 6 are set according to the installation scenario of the connector. It is used to mate with the internal thread of the equipment shell or other assembly parts to realize the fixed installation of the connector on the equipment and prevent the connector from loosening due to external force during use.

[0024] In addition, a flange 9 is integrally formed on the metal housing 5. The flange 9 is arranged around the second connecting end 4 of the terminal group 13, and its radial dimension is larger than the radial dimension of the main body of the metal housing 5, forming a ring-shaped protrusion structure. A plug interface 10 for inserting a mating connector is formed on the inner circumference of the flange 9. The inner diameter of the plug interface 10 is adapted to the outer diameter of the mating connector, and the axis of the plug interface 10 is collinear with the axis of the second connecting end 4, ensuring that the mating connector can accurately mate with the second connecting end 4 after being inserted into the plug interface 10, avoiding poor contact due to mating misalignment. At the same time, the flange 9 can also limit the insertion depth of the mating connector to prevent over-insertion and damage to the second connecting end 4 or the terminal group 13.

[0025] The grounding terminal 7 protrudes from the outer peripheral wall of the metal housing 5 and is specifically located on the flange 9. This position is far away from the signal transmission area of ​​the terminal group 13, so as to avoid interference with signal transmission caused by the grounding connection. At the same time, the space of the flange 9 can be used to reserve sufficient operating space for the welding operation of the grounding wire.

[0026] The grounding terminal 7 has a dedicated wiring section 8 for connecting an external grounding wire. The wiring section 8 consists of a first post 11 and a second post 1, both of which are made of the same conductive material as the metal casing 5 to ensure the conductivity continuity of the grounding path. The first post 11 is vertically disposed on the outer surface of the flange 9. There are two ways to connect it to the flange 9: one is to form it integrally with the flange 9, which is processed simultaneously with the metal casing 5 through casting or stamping processes, thus avoiding increased contact resistance caused by connection gaps; the other is to connect it to the flange 9 by welding. During welding, a solder compatible with the metal material is used to ensure that there are no false welds or cold welds at the welding point, thus ensuring a stable conductive connection between the first post 11 and the flange 9.

[0027] The second column 1 is vertically positioned at the end of the first column 11 furthest from the flange 9, with its axis collinear with that of the first column 11. The outer diameter of the second column 1 is smaller than that of the first column 11. This dimensional difference creates a stepped structure, which not only positions the area covered by the external grounding wire during welding, preventing excessive covering, but also increases the contact area between the grounding wire and the second column 1, improving the stability of the connection after welding. In actual use, the end of the external grounding wire can have its insulation removed before being fitted onto the outer circumference of the second column 1 and welded. The welding point is located at the step between the second column 1 and the first column 11, ensuring a stable conductive path between the grounding wire and the grounding terminal 7, thereby enabling the connector's grounding function through the metal housing 5.

[0028] In summary, in this utility model, the grounding terminal 7 is specifically set on the flange 9 of the metal shell 5, and the wiring part 8 adopts a stepped structure of "first column 11 + second column 1". The second column 1 can be directly welded to the external grounding wire. On the one hand, it avoids the problem of no soldering that easily occurs when directly welding the outer peripheral wall of the metal shell 5 in the prior art. The conductive structure of the independent wiring part 8 ensures the stability of the grounding path. On the other hand, the stepped structure can position the grounding wire, and the spatial position of the flange 9 provides sufficient space for welding operations, reducing the difficulty of operation and improving the efficiency of grounding connection.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A connector with a grounding terminal block and a metal housing, characterized in that, include: An insulating body, wherein a terminal receiving cavity extending axially is provided inside the insulating body; A terminal group, wherein the terminal group is embedded in the terminal receiving cavity, and one end of the terminal group forms a first connecting end and the other end forms a second connecting end; A metal outer shell is fixedly sleeved on the outer peripheral surface of the insulating body, and the outer peripheral wall of the metal outer shell is integrally formed with an external thread structure; A grounding terminal is provided, which protrudes from the outer peripheral wall of the metal casing and has a wiring portion.

2. The connector with a grounding terminal block and a metal housing according to claim 1, characterized in that, The metal housing has a flange portion, and the grounding terminal is disposed on the flange portion. The flange portion surrounds the second connection end, and the inner peripheral side of the flange portion forms a plug interface for inserting a matching connector, the plug interface corresponding to the second connection end.

3. A connector with a grounding terminal block and a metal housing according to claim 2, characterized in that, The wiring portion includes a first column and a second column. The first column is vertically disposed on the flange portion, and the second column is vertically disposed at the end of the first column away from the flange portion. The outer diameter of the second column is smaller than the outer diameter of the first column. The second column is used for welding connection with the external grounding wire.

4. A connector with a grounding terminal block and a metal housing according to claim 3, characterized in that, The first column and the flange are integrally formed, or the first column is welded to the flange.

5. A connector with a grounding terminal block and a metal housing according to claim 1, characterized in that, The terminal group includes multiple pins, and the surface of the pins is plated with gold.

6. A connector with a grounding terminal block and a metal housing according to any one of claims 1-5, characterized in that, The first connection end is located inside the terminal receiving cavity, and the second connection end is disposed away from the terminal receiving cavity and located on the outside of the insulating body.

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