Direct soldering structure for PCB connector

Abstract

The utility model discloses a direct welding formula structure for PCB connector, including the connector main part that is constituted by external casing and connecting terminal subassembly, and terminal subassembly includes each terminal main body that arranges in proper order, and the tail plate of terminal main body tail part, the bottom of terminal main body extends upward after, forms the head on one side vertical extension, the top of one side of tail plate faces the terminal main body and is equipped with the limit frame, and the vertical bending part of terminal main body is located in the limit frame, and the terminal sleeve shell is equipped in the external casing, and the terminal main body is inserted from the tail part of external casing, and is located in the terminal sleeve shell, and the tail part of tail plate and external casing fixed encapsulation, and the bottom of terminal main body exposes downward between the junction of tail plate and external casing, and communicates with the outside. The utility model solves the problem that the on-board connector of prior art is complex, and the product thickness increases after assembling, and the service life is not long.

Description

Technical Field

[0001] This utility model relates to the field of connectors, and in particular to a direct soldering structure for PCB connectors. Background Technology

[0002] In the existing technology, for some connectors (including male and female connectors) that need to be installed on the PCB board, they are mainly connected by soldering after wiring, and then bonded with adhesive. After assembly, they can be plugged into external devices.

[0003] The aforementioned traditional board-mounted connector fixing methods, after prolonged insertion, are susceptible to adhesive aging, water vapor, and prolonged stress, leading to adhesive separation and ultimately wire breakage due to stress. Furthermore, this traditional board-mounted connector assembly method involves complex processes such as dispensing and multi-point soldering, and cannot be further bonded to the PCB board, resulting in an increase in the overall product thickness.

[0004] In view of this, this technical solution proposes a direct-soldering structure for PCB connectors. It employs a tail-end direct soldering to the PCB board pads, with the terminals arranged vertically. This allows the entire connector (in the mating direction) to be further parallel to the PCB board after soldering, resulting in a further reduction in overall product thickness. Furthermore, the connector assembly is simple, can be completed quickly using either mechanical or manual assembly, and features high overall structural strength, a secure connection, and a long service life. Utility Model Content

[0005] The present invention aims to at least partially solve one of the technical problems in the related technologies. Therefore, the main objective of this invention is to provide a direct-soldering structure for PCB connectors, aiming to solve the problems of complex assembly of onboard connectors in the prior art, increased product thickness after assembly, and short service life.

[0006] To achieve the above objectives, this utility model provides a direct-soldering structure for PCB connectors, comprising a connector body consisting of an outer shell and connecting terminal assemblies. The terminal assembly includes terminal bodies arranged in sequence and a tail plate located at the rear of each terminal body. The bottom of each terminal body extends upward and then extends vertically to one side to form a head. A limiting frame is provided above the side of the tail plate facing the terminal body, and the vertically bent portion of the terminal body is located within the limiting frame. The outer housing is provided with a terminal sleeve. The terminal body is inserted from the tail of the outer housing and is located in the terminal sleeve. The tail plate is fixedly encapsulated with the tail of the outer housing. The bottom of the terminal body is exposed downward between the joint of the tail plate and the outer housing and communicates with the outside.

[0007] As a further embodiment of this utility model, the outer housing has a locking hole above the entrance of the terminal sleeve, and the top of the limiting frame is provided with a wedge that cooperates with the locking hole.

[0008] As a further embodiment of this utility model, a tail stop is provided above the terminal body and near the bending part, and a front stop is provided on the inner wall of the terminal sleeve to cooperate with the tail stop and limit and fix the terminal body.

[0009] As a further embodiment of this utility model, a partition plate for separating the terminal bodies is provided on one side of the tail plate.

[0010] As a further embodiment of this utility model, a groove matching the cross-sectional contour of the terminal body is provided above each of the isolation plates.

[0011] As a further embodiment of this invention, a positioning post is provided at the bottom of the outer casing.

[0012] As a further embodiment of this utility model, a fixing slot is provided at the lower tail of the outer housing for the bottom of the terminal body to pass through.

[0013] As a further embodiment of this utility model, an adhesive ring is filled inside the terminal sleeve and in the gap between the terminal body and the through hole of the terminal sleeve.

[0014] The beneficial effects of this utility model are as follows: This design incorporates a terminal assembly consisting of sequentially arranged terminal bodies and a tail plate with a limiting frame. The vertical bend of the terminal body is positioned within the limiting frame, and it is then inserted from the tail of the outer housing and fixed into the terminal sleeve. Finally, the bottom of the terminal body protrudes downwards between the tail plate and the housing. This integrated structure enables direct soldering of the connector, simplifying the assembly process to a simple insertion and fixation, eliminating the complex steps of traditional methods such as adhesive application and multi-point soldering.

[0015] More importantly, because the bottom of the terminal body is exposed directly downwards and soldered to the PCB board pads, the entire connector body can be mounted parallel to the PCB board surface to the maximum extent, significantly reducing the overall thickness of the product. At the same time, the constraint of the terminal bending part by the limiting frame and the fixed encapsulation of the tail plate and the shell together ensure the structural stability of the terminal during use and insertion / removal, effectively avoiding problems such as glue delamination and wire breakage caused by glue aging or stress concentration, thereby greatly improving the mechanical strength and long-term reliability of the connector. Attached Figure Description

[0016] To more clearly illustrate the technical solutions 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 the technical solutions of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the connector body in this utility model.

[0018] Figure 2 This is a preliminary disassembly diagram of the connector's outer housing and connecting terminal assembly in this utility model.

[0019] Figure 3 This is a schematic diagram of the positioning post set at the bottom of the outer shell in this utility model.

[0020] Figure 4 This is a partially enlarged schematic diagram of the terminal body after it has been separated from the outer shell in this utility model.

[0021] Figure 5 This is a schematic diagram of the various parts of the connecting terminal assembly in this utility model.

[0022] Figure 6 This is a schematic diagram showing the terminal body located inside the terminal sleeve and the rubber ring in this utility model.

[0023] Figure 7 This is a schematic diagram showing the locking holes and fixing slots at the rear of the outer casing and the front guard in this utility model.

[0024] Figure 8 This is a schematic cross-sectional view of the connector body in this utility model.

[0025] 1 Connector body 11 Connection terminal assembly 10 outer casing 110 rear gear 100 Terminal housing 1100 Limiting frame 101 Positioning Post 1101 wedge 102 rubber ring 1102 groove 103 windshield 1103 isolation plate 104 Snap 111 Terminal body 105 Fixed slot 1110 tail gear Detailed Implementation

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

[0027] The term "one embodiment" or "implementation" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.

[0028] Please see the appendix Figure 1-8 , The connection structure of this technical solution mainly includes a connector body (1) consisting of an outer shell (10) and a connection terminal assembly (11), wherein the connection terminal assembly (11) consists of a plurality of terminal bodies (111) arranged in sequence and a tail plate (110) located at the tail of these terminal bodies (111).

[0029] Each terminal body (111) has a structure in which the bottom extends upward first, and then bends vertically on one side to form a head, forming an inverted L shape. The tail plate (110) has a limit frame (1100) above the side facing the terminal body (111). When the terminal body (111) is assembled, its vertically bent part fits into this limit frame (1100), thereby restricting the movement of the terminal body (111) in the vertical direction and enhancing stability.

[0030] The outer housing (10) has a terminal sleeve (100) inside. The terminal body (111) is inserted into and fixed in the terminal sleeve (100) from the tail of the outer housing (10). At the same time, the tail plate (110) is fixedly encapsulated with the tail of the outer housing (10), so that the bottom of the terminal body (111) is exposed downward between the tail plate (110) and the outer housing (10), directly communicating with the outside, which is convenient for soldering onto the pads of the PCB board.

[0031] In actual assembly, the terminal body (111) is simply inserted into the terminal sleeve (100) and sealed with the tail plate (110), without the need for complicated dispensing or multi-point welding steps. Since the terminal body (111) is directly and vertically welded to the PCB board, the entire connector body (1) can be almost parallel to the PCB board surface, significantly reducing the overall thickness of the product. At the same time, the structure such as the limiting frame (1100) and the front guard (103) ensures the firmness of the terminal body (111) during insertion, removal and use, avoiding the problems of glue aging or wire breakage caused by stress in the traditional method, thereby improving the durability and service life of the connector.

[0032] Understandably, this solution only shows one type of male connector (male plug). Of course, it can also be a female connector soldered onto the PCB. When it is a female connector, the interior of its terminal housing (100) is set as a conductive contact.

[0033] Reference Appendix Figure 7 As a preferred embodiment of the present invention, the present solution provides a card hole (104) on the outer shell (10) and above the entrance of the corresponding terminal sleeve (100), and provides a wedge (1101) that cooperates with the card hole (104) on the top of the limiting frame (1100) of the tail plate (110).

[0034] When the terminal assembly (11) is inserted into the outer housing (10), the wedge (1101) will snap into the locking hole (104). Due to its barb-like one-way structure, once it is snapped in, it is difficult to pull out in the opposite direction, thereby locking the terminal assembly and the housing more firmly together and preventing it from coming loose during vibration or insertion / removal.

[0035] Of course, alternatively, similar methods of reinforcement and fixation are not limited to this. Screw holes can be provided at the corresponding positions for screw locking, or a flexible snap-fit ​​structure can be used for fixation.

[0036] Reference Appendix Figure 5 In a preferred embodiment of the present invention, a tail stop (1110) is provided above the terminal body (111) near its bend, and a front stop (103) is provided on the inner wall of the terminal sleeve (100) to cooperate with it. When the terminal body (111) is inserted into the terminal sleeve (100), the tail stop (1110) will abut against the front stop (103), thereby restricting and fixing the terminal body (111) at the tail position of the terminal sleeve (100), preventing it from moving back and forth inside, thus ensuring the stability of the electrical connection.

[0037] Reference Appendix Figure 5As a preferred embodiment of the present invention, a partition plate (1103) is provided on one side of the tail plate (110). The partition plate (1103) is located between the terminal bodies (111) arranged in sequence, which can separate each terminal body (111) from each other and prevent short circuits or electrical interference between adjacent terminals due to excessive distance.

[0038] Reference Appendix Figure 5 As a preferred embodiment of this utility model, this solution provides a groove (1102) above each isolation plate (1103) that matches the cross-sectional contour of the terminal body (111). When the terminal body (111) is installed, its rear part is tightly attached to the groove (1102), restricting the left and right swaying of the terminal body (111), thereby making its positioning in the terminal sleeve (100) more accurate and stable.

[0039] Reference Appendix Figure 3 As a preferred embodiment of this utility model, the technical solution extends a positioning post (101) downward from the bottom of the outer shell (10). When the connector is installed on the PCB board, it can be pre-inserted into the corresponding positioning hole on the PCB board, thereby achieving fast and accurate preliminary positioning, effectively preventing the connector from shifting during subsequent soldering, and ensuring the reliability of the soldering quality.

[0040] In this scheme, the outer shell (10) is an integral thermoplastic molded insulating shell, and the positioning post (101) is extruded downward from the shell. Of course, in some cases, positioning protrusions can also be designed at the bottom of the outer shell (10) to achieve positioning.

[0041] Reference Appendix Figure 7 As a preferred embodiment of the present invention, a fixing slot (105) is provided at the lower end of the outer housing (10). When the connecting terminal assembly (11) and the outer housing (10) are assembled, the tail plate (110) and the tail of the outer housing (10) together hold the bottom of the terminal body (111). At this time, the bottom of the terminal body (111) is exposed downward through the fixing slot (105). The terminal body (111) is not only limited by the tail plate (110), but its bottom side is also constrained in the fixing slot (105), so that it can obtain more stable support before and after welding.

[0042] Reference Appendix Figure 6 As a preferred embodiment of the present invention, a rubber ring (102) is filled inside the terminal sleeve (100) and in the gap between the terminal body (111) and the sleeve through hole. Unlike the traditional rubber ring (or the glue application method), this solution sets the sealing structure inside the housing, which can ensure that the rubber ring (102) is not corroded by the outside under normal circumstances.

[0043] During assembly, after the terminal body (111) is inserted, the rubber ring (102) can fill the tiny gap between it and the housing, preventing the intrusion of external moisture and dust, and improving the connector's moisture-proof and pollution-proof capabilities in harsh environments.

[0044] Alternatively, internal sealing can be achieved by using a local potting process after assembly, or by setting elastic sealing gaskets at the housing joints, or other feasible sealing solutions.

[0045] The following points need to be explained: (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0046] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure can be combined with each other.

[0047] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A direct-soldering structure for PCB connectors, characterized in that, include The connector body consists of an outer housing and a connection terminal assembly. The terminal assembly includes terminal bodies arranged in sequence and a tail plate located at the rear of each terminal body. The bottom of each terminal body extends upward and then extends vertically to one side to form a head. A limiting frame is provided above the side of the tail plate facing the terminal body, and the vertically bent portion of the terminal body is located within the limiting frame. The outer housing is provided with a terminal sleeve. The terminal body is inserted from the tail of the outer housing and is located in the terminal sleeve. The tail plate is fixedly encapsulated with the tail of the outer housing. The bottom of the terminal body is exposed downward between the joint of the tail plate and the outer housing and communicates with the outside.

2. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, The outer housing has a locking hole above the entrance of the terminal sleeve, and the top of the limiting frame has a wedge that engages with the locking hole.

3. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, Above the terminal body, and near the bend, there is a tail stop. The inner wall of the terminal housing is provided with a front stop that cooperates with the tail stop and limits and fixes the terminal body.

4. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, A partition plate is provided on one side of the tail plate to separate the terminal bodies.

5. The direct-soldering structure for PCB connectors according to claim 4, characterized in that, A groove matching the cross-sectional profile of the terminal body is provided above each of the isolation plates.

6. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, The bottom of the outer casing is provided with a positioning post extending downwards.

7. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, A fixing slot is provided at the lower rear of the outer housing for the bottom of the terminal body to pass through.

8. The direct-soldering structure for PCB connectors according to claim 1, characterized in that, An adhesive ring is filled inside the terminal housing and in the gap between the terminal body and the through hole of the terminal housing.

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