Fool-proof positioning connector

Abstract

The utility model relates to the technical field of connectors, and provides a fool-proof positioning connector, which comprises a top frame, a bottom plate, a first side plate, a second side plate, a separation block, a limiting block and a positioning column, and is characterized in that the top frame is vertically opposite to the bottom plate; a cavity is formed among the top frame, the bottom plate, the first side plate and the second side plate, and the partition block is arranged in the cavity and divides the cavity into a limiting groove; one end of the limiting groove is a wire harness plugging port, and the other end of the limiting groove is a terminal plugging port; the limiting block is connected to the top frame and located in the limiting groove, and the limiting block is used for limiting a card on the terminal; the positioning column is connected to the second side plate, one end of the positioning column extends, the positioning column extends towards the end where the terminal plugging port is located, the length direction of the positioning column is parallel to the length direction of the limiting groove, and the positioning column is used for being plugged on a PCB. According to the invention, the wire harness and the PCB can be better positioned and welded conveniently.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a foolproof positioning connector. Background Technology

[0002] Wire harnesses are widely used in signal transmission or power connection of computers, home appliances, communication equipment, digital devices, etc. Terminals are used to connect wire harnesses and connectors, which not only facilitates the assembly of electronic equipment, but also ensures the reliability of signal transmission and connection between internal circuit boards of electronic equipment or between electronic equipment.

[0003] After the terminals, connectors, and wires are crimped and assembled, they need to be mated with the PCB board and then soldered (soldering or electric soldering). Since the positioning reference for the wire harness is the terminal, and the terminal pins themselves are thin and long, they are prone to deformation when mated with the PCB board, affecting the conductivity stability of the product. Moreover, during soldering, the wire harness structure is relatively weaker than the PCB board structure, and the terminal pins of the wire harness are at risk of deformation and misalignment, which in turn affects the conductivity stability of the product. Therefore, improvements are needed. Utility Model Content

[0004] To improve the structural strength of the wire harness and facilitate better insertion and soldering, this application provides a foolproof positioning connector.

[0005] The foolproof positioning connector provided in this application adopts the following technical solution:

[0006] A foolproof positioning connector includes a top frame, a bottom plate, a first side plate, a second side plate, a partition block, a limiting block, and a positioning post. The top frame and the bottom plate are vertically opposite each other. The first side plate is connected to one end of the top frame and the bottom plate, and the second side plate is connected to the other end of the top frame and the bottom plate.

[0007] A cavity is formed between the top frame and the bottom plate. The partition block is disposed in the cavity and divides the cavity into a limiting groove. One end of the limiting groove is a wire harness insertion interface, and the other end is a terminal insertion interface.

[0008] The limiting block is connected to the top frame and is located within the limiting groove. The limiting block is used to limit the card on the terminal. The positioning post is connected to the second side plate and extends at one end. The positioning post extends towards the end where the terminal insertion interface is located. The length direction of the positioning post is parallel to the length direction of the limiting groove and is used to insert into the PCB board.

[0009] By adopting the above technical solution, the wire and the terminal are first connected by pressing. Then, the terminal is inserted from the end where the wire harness connector is located, so that the terminal enters the limiting groove and reaches the terminal connector. When the wire harness is inserted into the wire harness connector, the clip on the metal terminal abuts against the limiting block to prevent the wire harness from coming out.

[0010] To better understand how the card on the metal terminal engages with the limiting block, one can refer to a connector disclosed in existing patent CN209183779U, and use the patent's specification to help understand the principle of this card engagement.

[0011] When the wire harness needs to be plugged into an external PCB board (the PCB board will have corresponding holes for the positioning pins), the plugging process uses the positioning pins on the connector to achieve quick positioning and plugging. After plugging, the external solder terminals are used to connect to the PCB to achieve full fixation.

[0012] When mating with a PCB board, the connector's foolproof positioning structure ensures that the terminal pins only play an auxiliary role, preventing terminal deformation and improving the stability of the product's conductivity. During soldering, the connector's inherent positioning structure does not affect the overall structure of the terminals and the PCB board, resulting in good product stability. Furthermore, the connector's foolproof positioning structure facilitates assembly with the PCB, improving assembly efficiency, reducing costs, and enabling automation.

[0013] Preferably, a plurality of partition blocks are provided, and each partition block is distributed at intervals within the cavity, forming a plurality of limiting grooves; a plurality of limiting blocks are arranged in parallel, and each limiting block is located within its respective limiting groove.

[0014] By adopting the above technical solution, multiple workstations for inserting wire harnesses are set up according to actual usage requirements, with each wire harness corresponding to a respective limiting slot.

[0015] Preferably, the base plate has an inclined guide surface on one side of the wire harness insertion interface. The inclined guide surface is located within the limiting groove and is used to guide the wire harness.

[0016] By adopting the above technical solution, the existence of the inclined guide surface can play a guiding role, making it easy for the wire harness to be smoothly engaged in the limiting groove.

[0017] Preferably, it also includes a protrusion, which is disposed on the side of the bottom plate facing the top frame and located in the limiting groove. The protrusion is located directly below the limiting block, and the two work together to lock the terminal.

[0018] By employing the above technical solution, the protrusion and the limiting block work together to lock the wire harness in place. Simultaneously, the protrusion can increase the contact area between the wire harness and the base plate to a certain extent, improving the stability of the connection between the wire harness and the connector.

[0019] Preferably, an arc-shaped groove is provided at the connection between the top frame and the first side panel, and the arc-shaped groove is also provided at the connection between the top frame and the second side panel.

[0020] By adopting the above technical solution, two arc-shaped grooves are provided. When the wire harness needs to be snapped into the limiting groove, the operator's thumb and forefinger can press on the two arc-shaped grooves respectively, and then the other hand can snap the wire harness in place. The existence of the arc-shaped grooves can improve the operator's comfort when applying force to the connector and increase the contact area to reduce pressure.

[0021] Preferably, the positioning post is provided with a frustum at one end of the terminal plug interface, and the cross-sectional diameter of the frustum gradually decreases in the direction away from the wire harness plug interface.

[0022] By adopting the above technical solution, the design of the frustum makes it easier for the positioning post to fit better into the hole on the PCB board.

[0023] Preferably, the connector is integrally molded using injection molding.

[0024] By adopting the above technical solutions, one-piece injection molding can reduce processes, optimize processing steps, and improve production efficiency.

[0025] Preferably, a groove is provided on the side of the base plate away from the top frame, and the groove is arranged along the length direction of the limiting groove.

[0026] By adopting the above technical solution, the groove has the following main functions: 1. Saves materials used in injection molding; 2. Makes it easy for the connector to be smoothly removed from the mold after injection molding; 3. Facilitates assembly; 4. Increases aesthetics.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] (1) By setting limit blocks and positioning posts, the wires and terminals are first connected by pressing, and then the terminals are inserted from the end where the wire harness plug interface is located; at the same time, the card on the metal terminal is used to abut against the limit block to prevent the wire harness from coming out; after the wires and terminals are installed, the connector is inserted into the external PCB board. The insertion process uses positioning posts to achieve quick positioning and insertion. With the foolproof positioning structure on the connector, the pins of the terminals only play an auxiliary role, which can prevent the terminals from deforming and improve the stability of the product's conduction.

[0029] (2) By setting a frustum, when inserting, the cross-section of the end of the frustum facing the PCB board is smaller, so that the positioning post can be better inserted into the hole on the PCB board.

[0030] (3) By setting an arc groove, the pressure on the connector when the operator applies force can be reduced, thus improving comfort. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the foolproof positioning connector in one embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of the foolproof positioning connector from another perspective in one embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the groove structure of the foolproof positioning connector in one embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the foolproof positioning connector in another embodiment of this application.

[0035] Reference numerals in the attached drawings: 1. Top frame; 2. Base plate; 3. First side plate; 4. Second side plate; 5. Separator block; 6. Limiting block; 7. Positioning post; 8. Limiting groove; 9. Wire harness connector; 10. Terminal connector; 11. Inclined guide surface; 12. Protrusion; 13. Frustum; 14. Groove; 15. Arc groove. Detailed Implementation

[0036] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.

[0037] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0040] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.

[0041] This application discloses a foolproof positioning connector. (Refer to...) Figures 1 to 3 The foolproof positioning connector includes a top frame 1, a base plate 2, a first side plate 3, a second side plate 4, a separator block 5, a limiting block 6, and a positioning post 7. The top frame 1 is rectangular and hollow. The top frame 1 and the base plate 2 are vertically opposite each other, with the top frame 1 located above the base plate 2. The first side plate 3 connects one end of the top frame 1 and the base plate 2, and the second side plate 4 connects the other end of the top frame 1 and the base plate 2.

[0042] A cavity is formed between the top frame 1 and the bottom plate 2. The partition block 5 is located in the cavity and is fixedly connected to both the top frame 1 and the bottom plate 2. The partition block 5 divides the cavity into a limiting groove 8. One end of the limiting groove 8 is a wire harness plug interface 9, and the other end is a terminal plug interface 10.

[0043] The limiting block 6 is horizontally fixedly connected to the top frame 1 and is located within the limiting groove 8. The limiting block 6 is set along the length direction of the limiting groove 8 and is used to abut and limit the elastic card on the terminal. The positioning post 7 is fixedly connected to the second side plate 4 and extends at one end towards the end where the terminal insertion interface 10 is located. The length direction of the positioning post 7 is parallel to the length direction of the limiting groove 8 and is used to insert onto the PCB board.

[0044] The wires and terminals are first connected by crimping. Then, the terminals are inserted into the end of the wire harness connector 9, so that the terminals enter the limiting groove 8 and reach the terminal connector 10. When the wire harness is inserted into the wire harness connector 9, the clips on the metal terminals abut against the limiting block 6 to prevent the wire harness from coming out.

[0045] To better understand how the card on the metal terminal engages with the limiting block 6, one can refer to a connector disclosed in existing patent CN209183779U, and use the specification of the existing patent to help understand the principle of this card engagement.

[0046] After the terminals, connectors, and wires are crimped and assembled, they are inserted into the external PCB board via the connector (the PCB board will have corresponding insertion holes for the positioning pins 7). The insertion process uses the positioning pins 7 to achieve quick positioning and insertion. After insertion, the external solder terminals are used to connect to the PCB to achieve full fixation.

[0047] When mating with a PCB board, the connector's foolproof positioning structure ensures that the terminal pins only play an auxiliary role, preventing terminal deformation and improving the stability of the product's conductivity. During soldering, the connector's inherent positioning structure does not affect the overall structure of the terminal and PCB board, resulting in good product stability. Furthermore, the connector's foolproof positioning structure facilitates assembly with the PCB, improving assembly efficiency and reducing costs.

[0048] The base plate 2 has an inclined guide surface 11 on one side of the wire harness insertion interface 9. The inclined guide surface 11 is inclined inward and upward and is located within the limiting groove 8 to guide the insertion of the wire harness. A protrusion 12 is integrally connected to the side of the base plate 2 facing the top frame 1. The protrusion 12 is located within the limiting groove 8 and directly below the limiting block 6. The limiting block 6 and the protrusion 12 together are used to lock the terminal in place. The protrusion 12 can increase the contact area between the wire harness and the base plate 2 to a certain extent, improving the stability of the connection between the wire harness and the connector.

[0049] Specifically, several partition blocks 5 are provided, each partition block 5 is spaced apart within the cavity, and forms several limiting grooves 8. In this embodiment, the number of limiting grooves 8 is five, but in other embodiments it can be three or eight, or other positive integers. Several limiting blocks 6 are arranged in parallel, each limiting block 6 located within a limiting groove 8. During the production process, workers can set up multiple workstations for inserting wire harnesses according to actual usage needs, with each wire harness corresponding to a specific limiting groove 8, completing the fixing of multiple wire harnesses and facilitating subsequent soldering of terminals and PCB boards.

[0050] The positioning post 7 is located at one end of the terminal plug interface 10 and is also provided with a frustum 13. The cross-section of the frustum 13 is circular, and the diameter of the cross-section of the frustum 13 gradually decreases in the direction away from the wire harness plug interface 9. During insertion, since the cross-section of the end of the frustum 13 facing the PCB board is smaller, it is easier for the positioning post 7 to be better inserted into the plug hole on the PCB board.

[0051] In this embodiment, the connector is integrally molded using injection molding. Integral injection molding reduces processes, optimizes manufacturing steps, and improves connector production efficiency. A groove 14 is provided on the side of the base plate 2 away from the top frame 1. The groove 14 has a rectangular cross-section and is positioned along the length of the limiting groove 8. The groove 14 serves several purposes: 1. It saves material used in injection molding; 2. It facilitates the connector's smooth removal from the mold after injection molding; 3. It facilitates assembly; 4. It enhances aesthetics.

[0052] In addition, in some embodiments, please refer to Figure 4 An arc-shaped groove 15 is provided at the connection between the top frame 1 and the first side plate 3, and an arc-shaped groove 15 is also provided at the connection between the top frame 1 and the second side plate 4. When it is necessary to snap the wire harness into the limiting groove 8, the operator's thumb and forefinger can press on the two arc-shaped grooves 15 respectively, and then the other hand can snap the wire harness in place. The existence of the arc-shaped groove 15 can improve the comfort of the operator when applying force to the connector and increase the contact area to reduce pressure.

[0053] The implementation principle of the foolproof positioning connector in this application embodiment is as follows: the wire and the terminal are first connected by a pressing process, and then the terminal is inserted from the end where the wire harness insertion interface 9 is located, so that the terminal accurately enters the limiting groove 8 and abuts against the terminal insertion interface 10. When the wire harness is inserted into the wire harness insertion interface 9, the card on the metal terminal forms an abutment structure with the limiting block 6, thereby constructing an anti-disengagement and stopping mechanism to ensure the stability of the wire harness connection.

[0054] After the terminals, connectors, and wires are pressed and assembled, they are inserted into the external PCB board as a whole through the connector (the PCB board has pre-set corresponding holes for the positioning pins 7). During the insertion process, the positioning pins 7 achieve rapid and accurate positioning. After the insertion is completed, the connection between the terminals and the PCB board is further soldered and fixed through an external soldering process to achieve a reliable mechanical and electrical connection.

[0055] During the mating process with the PCB board, the connector's foolproof positioning structure performs the primary positioning function, while the terminal pins only play an auxiliary role. This design effectively avoids the risk of terminal deformation under stress, thereby improving the stability of the product's conductivity. During soldering, due to the connector's own positioning structure, the overall structure of the terminals and the PCB board is not affected by the soldering operation, ensuring the product's structural stability. Simultaneously, the application of the connector's foolproof positioning structure helps optimize the assembly process with the PCB board, significantly improving assembly efficiency and achieving cost control goals.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foolproof positioning connector, characterized in that, It includes a top frame (1), a bottom plate (2), a first side plate (3), a second side plate (4), a partition block (5), a limiting block (6), and a positioning post (7). The top frame (1) and the bottom plate (2) are vertically opposite each other. The first side plate (3) is connected to one end of the top frame (1) and the bottom plate (2), and the second side plate (4) is connected to the other end of the top frame (1) and the bottom plate (2). A cavity is formed between the top frame (1) and the bottom plate (2), and the partition block (5) is disposed in the cavity and divides the cavity into a limiting groove (8); one end of the limiting groove (8) is a wire harness plug interface (9), and the other end is a terminal plug interface (10). The limiting block (6) is connected to the top frame (1) and is located in the limiting groove (8). The limiting block (6) is used to limit the card on the terminal. The positioning post (7) is connected to the second side plate (4) and extends at one end. The positioning post (7) extends towards the end where the terminal plug interface (10) is located. The length direction of the positioning post (7) is parallel to the length direction of the limiting groove (8) and is used to plug into the PCB board.

2. The foolproof positioning connector according to claim 1, characterized in that, The partition blocks (5) are provided in a plurality of them, and each partition block (5) is distributed at intervals in the cavity and forms a plurality of limiting grooves (8); the limiting blocks (6) are arranged in parallel, and each limiting block (6) is located in each limiting groove (8).

3. The foolproof positioning connector according to claim 1, characterized in that, The base plate (2) is provided with an inclined guide surface (11) on one side of the wire harness insertion interface (9). The inclined guide surface (11) is located in the limiting groove (8) and is used to guide the wire harness.

4. The foolproof positioning connector according to claim 3, characterized in that, It also includes a protrusion (12), which is located on the side of the bottom plate (2) facing the top frame (1) and is located in the limiting groove (8). The protrusion (12) is located directly below the limiting block (6), and the two together lock the terminal.

5. The foolproof positioning connector according to claim 1, characterized in that, An arc-shaped groove (15) is provided at the connection between the top frame (1) and the first side plate (3), and the arc-shaped groove (15) is also provided at the connection between the top frame (1) and the second side plate (4).

6. The foolproof positioning connector according to claim 1, characterized in that, The positioning post (7) is provided with a frustum (13) at one end of the terminal plug (10), and the cross-sectional diameter of the frustum (13) gradually decreases in the direction away from the wire harness plug (9).

7. The foolproof positioning connector according to claim 1, characterized in that, The connector is integrally molded using injection molding.

8. A foolproof positioning connector according to claim 7, characterized in that, The bottom plate (2) has a groove (14) on the side away from the top frame (1), and the groove (14) is arranged along the length direction of the limiting groove (8).

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