An assembled wiring terminal

Abstract

The utility model discloses a kind of assembled wiring terminal, including terminal module, PCB board and plug-in card, the terminal module includes main body, cladding molding plastic body, conductive plastic body and ground terminal;Two cladding molding plastic bodies are provided, and two the cladding molding plastic body is symmetrically inserted in the inner cavity of main body, and several ground terminals are equidistantly distributed between two cladding molding plastic bodies, when using, by cladding molding terminal modularization and completely symmetrical setting, it can be applied to connector of different length, different pin number, and assembly is simple, greatly reduce use cost, in addition, the SI performance (insertion loss / crosstalk etc.) of connector product is improved by the contact between conductive plastic body and cladding terminal molding plastic assembly, in addition, the bending angle of adjusting ground terminal bending part can be adapted to different board thickness PCB.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and in particular to an assembled terminal block. Background Technology

[0002] Terminal blocks are accessories used to achieve electrical connections, and are classified as connectors in industry. With increasing industrial automation and more stringent and precise industrial control requirements, the use of terminal blocks is gradually rising. As the electronics industry develops, the applications of terminal blocks are expanding, and the types are also increasing. Besides PCB board terminals, the most widely used types include metal terminals, nut terminals, spring terminals, and so on.

[0003] Existing terminal blocks are difficult to assemble, which increases the cost of use, and the bending angle of the solder feet cannot be adapted to PCBs of different thicknesses. Therefore, we propose an assembled terminal block to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a modular terminal block.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] A modular terminal block includes a terminal module, a PCB board, and a plug-in. The terminal module includes a main body, an encapsulated plastic body, a conductive plastic body, and a grounding terminal. Two encapsulated plastic bodies are provided and are symmetrically inserted into the inner cavity of the main body. Several grounding terminals are equidistantly distributed between the two encapsulated plastic bodies. Two conductive plastic bodies are respectively snapped onto opposite sides of the two encapsulated plastic bodies. The plug-in is inserted into the front side of the main body. The PCB board is inserted into the rear side of the main body and is provided with a snap-fit ​​mechanism between the PCB board and the main body.

[0007] Furthermore, the two overmolded plastic bodies are completely symmetrical, and the two overmolded plastic bodies are spliced ​​together in the front-to-back direction and locked together as a whole with a dovetail structure.

[0008] Furthermore, the encapsulated plastic body is provided with three sets of left-right symmetrical card blocks, and each set of card blocks is provided with two card blocks. The conductive plastic body is provided with card slots that correspond to the position and number of card blocks. The top and bottom of the main body are provided with three through slots. Each card block is inserted into the adjacent card slot and then inserted into the inner cavity of the adjacent through slot.

[0009] Furthermore, the snap-fit ​​mechanism includes two connecting seats, which are respectively fixedly connected to the left and right sides of the main body. Each connecting seat has an opening slot on the side facing the PCB board, and each connecting seat also has a finger pressure groove at its top and bottom. Each finger pressure groove has a fixing hole communicating with the inner cavity of the opening slot. The PCB board has two positioning holes, located within the cavities of the two opening slots. Each fixing hole has a corresponding positioning rod slidably connected to its inner cavity, with one end of the positioning rod inserted into the adjacent positioning hole. The inner cavity of each positioning rod has a connecting plate fixedly connected to one end away from the inner cavity of the positioning hole, and a rocker plate is attached to the side of the connecting plate facing the positioning rod. A rotating shaft is fixedly connected through each rocker plate, and both ends of the rotating shaft are rotatably connected to the inner wall of the acupressure groove. A slider is fixedly connected to the outer wall of each positioning rod, and a sliding groove adapted to the slider is opened on the inner wall of each fixing hole. Each slider is slidably connected to the inner cavity of the adjacent sliding groove. A first spring is provided in the inner cavity of each sliding groove, and both ends of the first spring are fixedly connected to the inner wall of the sliding groove and the slider, respectively.

[0010] Furthermore, the upper and lower edges of the PCB board facing the center of the inner cavity of the opening slot are chamfered, and the end of the positioning rod facing the center of the inner cavity of the positioning hole is beveled.

[0011] Furthermore, a second spring is provided on the side of the rocker facing the center of the acupressure groove, and the other end of the second spring is fixedly connected to the inner wall of the acupressure groove. A limiting plate is attached to the side of the rocker away from the connecting plate, and the limiting plate is fixedly connected to the inner wall of the acupressure groove.

[0012] Furthermore, the grounding terminal has a pre-set bent portion.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By modularizing and symmetrically arranging the overmolded terminals, it can be applied to connectors of different lengths and pin counts, and the assembly is simple, greatly reducing the cost of use. In addition, the conductive plastic body, after being assembled with the overmolded plastic of the overmolded terminals, contacts the upper and lower rows of grounding terminals, improving the SI performance (insertion loss / crosstalk, etc.) of the connector products. Furthermore, adjusting the bending angle at the bending part of the grounding terminal can adapt to PCBs of different thicknesses.

[0015] 2. Through the design of the connecting seat, finger pressure groove, fixing hole, positioning hole, positioning rod, slider, slide groove, first spring, rocker, rotating shaft, second spring, and limiting plate, when connecting the PCB board and the main body, the PCB board is inserted into the opening groove on the connecting seat. Due to the chamfer of the PCB board and the bevel of the positioning rod, when the PCB board contacts the positioning rod, it can push the positioning rod to overcome the resistance of the first spring and retract from the inner cavity of the opening groove. After the positioning hole aligns with the fixing hole, the positioning rod is driven into the inner cavity of the positioning hole by the rebound force of the first spring, thereby locking the PCB board and the main body together. Conversely, when it is necessary to separate the PCB board and the main body, simply press the two rockers on the same connecting seat at the same time and drive the two adjacent connecting plates to move in opposite directions under the rotation of the rotating shaft, thereby pulling the positioning rod out of the inner cavity of the positioning hole. This improves the convenience of separating the PCB board and the main body and enhances the ease of assembling and disassembling the terminal block.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0018] Figure 2 This is a schematic diagram of the main structure of the first embodiment;

[0019] Figure 3 This is a schematic diagram of the main body disassembly structure of the first embodiment;

[0020] Figure 4 This is a cross-sectional structural diagram of the first embodiment;

[0021] Figure 5 This is a three-dimensional structural diagram of the grounding terminal in the first embodiment;

[0022] Figure 6 for Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 7 This is a cross-sectional view of the connector and PCB board splicing structure in the second embodiment.

[0024] In the diagram: 1. Terminal module; 2. Main body; 3. Overmolded plastic body; 4. Conductive plastic body; 5. Grounding terminal; 6. Connecting seat; 7. Card block; 8. Card slot; 9. Through slot; 10. PCB board; 11. Insert card; 12. Finger pressure groove; 13. Fixing hole; 14. Opening slot; 15. Positioning hole; 16. Positioning rod; 17. Bending part; 18. Connecting plate; 19. Rocker; 20. Rotating shaft; 21. Second spring; 22. Limiting plate; 23. Slide groove; 24. First spring; 25. Slider. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] This utility model provides the following technical solution:

[0029] Example 1, please refer to Figures 1 to 6 :

[0030] A modular terminal block includes a terminal module 1, a PCB board 10, and a plug-in card 11. The terminal module 1 includes a main body 2, a molded plastic body 3, a conductive plastic body 4, and a grounding terminal 5. Two molded plastic bodies 3 are provided, and the two molded plastic bodies 3 are symmetrically inserted into the inner cavity of the main body 2. Several grounding terminals 5 are equidistantly distributed between the two molded plastic bodies 3. Two conductive plastic bodies 4 are respectively snapped into the opposite sides of the two molded plastic bodies 3. The plug-in card 11 is inserted into the front side of the main body 2. The PCB board 10 is inserted into the rear side of the main body 2, and a snap-in mechanism is provided between the PCB board 10 and the main body 2.

[0031] The two overmolded plastic bodies 3 are completely symmetrical and are spliced ​​together in the front-to-back direction. They are then locked together as one unit with a dovetail structure. The length of the overmolded plastic body 3 can be changed to be used in connectors of different lengths and pin counts (X1 / X4 / X8 / X16), thereby reducing costs.

[0032] The overmolded plastic body 3 is provided with three sets of left-right symmetrical locking blocks 7, and each set of locking blocks 7 has two blocks. The conductive plastic body 4 is provided with locking slots 8 that correspond to the position and number of locking blocks 7. The top and bottom of the main body 2 are provided with three through slots 9. Each locking block 7 is inserted into the adjacent locking slot 8 and then inserted into the inner cavity of the adjacent through slot 9. After the overmolded plastic body 3 and the conductive plastic body 4 are assembled, they are inserted into the inner cavity of the main body 2. The horizontal locking of the locking blocks 7 and the locking slots 8, combined with the vertical locking of the locking blocks 7 and the through slots 9, makes the assembly structure locked. The vertical locking can ensure reliable and stable contact and improve the SI performance (interlocking loss / crosstalk) of the connector product.

[0033] The grounding terminal 5 has a pre-set bending part 17. By adjusting the bending angle of the bending part 17, it can be adapted to PCB boards 10 of different thicknesses.

[0034] Working principle: By modularizing and symmetrically arranging the overmolded terminals, it can be applied to connectors of different lengths and pin counts, and the assembly is simple, greatly reducing the cost of use. In addition, the conductive plastic body 4, after being assembled with the overmolded plastic of the overmolded terminals, contacts the upper and lower rows of grounding terminals 5, improving the SI performance (insertion loss / crosstalk, etc.) of the connector product. Furthermore, adjusting the bending angle at the bending part 17 on the grounding terminal 5 can adapt to PCBs of different thicknesses.

[0035] Example 2, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 7 :

[0036] The snap-fit ​​mechanism includes two connecting seats 6, which are fixedly connected to the left and right sides of the main body 2, respectively. Each connecting seat 6 has an opening slot 14 on the side facing the PCB board 10, and acupressure grooves 12 are provided at the top and bottom of each connecting seat 6. Each acupressure groove 12 has a fixing hole 13 communicating with the inner cavity of the opening slot 14. The PCB board 10 has two positioning holes 15, located within the inner cavities of the two opening slots 14. Each fixing hole 13 has a corresponding positioning rod 16 slidably connected to its inner cavity, with one end of the positioning rod 16 inserted into the inner cavity of the adjacent positioning hole 15. Each positioning rod 16 has a connecting plate 18 fixedly connected to one end away from the inner cavity of the positioning hole 15. A rocker plate 19 is attached to the side of the connecting plate 18 facing the positioning rod 16. A rotating shaft 20 is fixedly connected through each rocker plate 19. Both ends of the rotating shaft 20 are rotatably connected to the inner wall of the finger pressure groove 12. A slider 25 is fixedly connected to the outer wall of each positioning rod 16. A groove 23 that matches the slider 25 is opened on the inner wall of each fixing hole 13. Each slider 25 is slidably connected to the inner cavity of the adjacent groove 23. A first spring 24 is provided in the inner cavity of each groove 23. Both ends of the first spring 24 are fixedly connected to the inner wall of the groove 23 and the slider 25, respectively.

[0037] The upper and lower edges of the PCB board 10 facing the center of the inner cavity of the opening slot 14 are chamfered, and the end of the positioning rod 16 facing the center of the inner cavity of the positioning hole 15 is beveled, so that the PCB board 10 can be automatically inserted into the inner cavity of the opening slot 14 and locked.

[0038] A second spring 21 is provided on the side of the rocker 19 facing the center of the inner cavity of the acupressure groove 12, and the other end of the second spring 21 is fixedly connected to the inner wall of the acupressure groove 12. A limiting plate 22 is attached to the side of the rocker 19 away from the connecting plate 18, and the limiting plate 22 is fixedly connected to the inner wall of the acupressure groove 12. The setting of the limiting plate 22 can limit the flipping angle of the rocker 19 near the positioning rod 16, and under the setting of the second spring 21, the rocker 19 can be reset, so that the rocker 19 remains in a horizontal state.

[0039] Working principle: When using this invention, when connecting the PCB board 10 and the main body 2, the PCB board 10 is inserted into the opening slot 14 on the connector 6. Due to the chamfer of the PCB board 10 and the beveled end of the positioning rod 16, when the PCB board 10 contacts the positioning rod 16, it can push the positioning rod 16 to overcome the resistance of the first spring 24 and retract from the inner cavity of the opening slot 14. After the positioning hole 15 is aligned with the fixing hole 13, the positioning rod 16 is driven to insert under the action of the rebound force of the first spring 24. The PCB board 10 and the main body 2 can be locked together by inserting the PCB board 10 into the inner cavity of the positioning hole 15. Conversely, when it is necessary to separate the PCB board 10 and the main body 2, simply press the two pry bars 19 on the same connector 6 at the same time and pry the adjacent connector 18 upward under the rotation of the pivot 20, so that the two adjacent connector 18 move in opposite directions. The positioning rod 16 can be pulled out from the inner cavity of the positioning hole 15, and then the PCB board 10 and the main body 2 can be separated, which improves the convenience of assembling and disassembling the terminal block.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A modular terminal block, comprising a terminal module (1), a PCB board (10), and a plug-in card (11), characterized in that: The terminal module (1) includes a main body (2), an encapsulated plastic body (3), a conductive plastic body (4), and a grounding terminal (5). Two of the encapsulated plastic bodies (3) are provided, and the two encapsulated plastic bodies (3) are inserted into the inner cavity of the main body (2) in a symmetrical manner. Several grounding terminals (5) are distributed equidistantly between the two encapsulated plastic bodies (3). Two conductive plastic bodies (4) are respectively snapped onto the opposite side of the two encapsulated plastic bodies (3). The insert card (11) is inserted into the front side of the main body (2); The PCB board (10) is inserted into the rear side of the main body (2) and a snap-fit ​​mechanism is provided between it and the main body (2).

2. The modular terminal block as described in claim 1, characterized in that: The two encapsulated plastic bodies (3) are completely symmetrical, and the two encapsulated plastic bodies (3) are spliced ​​together in the front-to-back direction and locked together with a dovetail structure to form a whole.

3. The modular terminal block as described in claim 1, characterized in that: The encapsulated plastic body (3) is provided with three sets of left and right symmetrical card blocks (7), and each set of card blocks (7) is provided with two. The conductive plastic body (4) is provided with card slots (8) that correspond to the position and number of card blocks (7). The top and bottom of the main body (2) are provided with three through slots (9). Each card block (7) is inserted into the adjacent card slot (8) and then inserted into the inner cavity of the adjacent through slot (9).

4. The modular terminal block as described in claim 1, characterized in that: The snap-fit ​​mechanism includes two connecting seats (6), which are fixedly connected to the left and right sides of the main body (2). Each of the two connecting seats (6) has an opening slot (14) on the side facing the PCB board (10), and a finger pressure groove (12) is provided at the top and bottom of each connecting seat (6). Each finger pressure groove (12) has a fixing hole (13) communicating with the inner cavity of the opening slot (14). The PCB board (10) has two positioning holes (15), which are located within the inner cavities of the two opening slots (14). Each fixing hole (13) has a slidably connected positioning rod (16) with one end inserted into the inner cavity of the adjacent positioning hole (15). 16) A connecting plate (18) is fixedly connected to one end of the cavity away from the positioning hole (15), and a rocker plate (19) is attached to the side of the connecting plate (18) facing the positioning rod (16). A rotating shaft (20) is fixedly connected through each rocker plate (19), and both ends of the rotating shaft (20) are rotatably connected to the inner wall of the finger pressure groove (12). A slider (25) is fixedly connected to the outer wall of each positioning rod (16), and a sliding groove (23) adapted to the slider (25) is opened on the inner wall of each fixing hole (13). Each slider (25) is slidably connected to the inner cavity of the adjacent sliding groove (23). A first spring (24) is provided in the inner cavity of each sliding groove (23), and both ends of the first spring (24) are fixedly connected to the inner wall of the sliding groove (23) and the slider (25) respectively.

5. The modular terminal block as described in claim 4, characterized in that: The PCB board (10) has chamfered edges on the side facing the center of the inner cavity of the opening slot (14), and the positioning rod (16) has a beveled end facing the center of the inner cavity of the positioning hole (15).

6. The modular terminal block as described in claim 4, characterized in that: A second spring (21) is provided on the side of the rocker (19) facing the center of the inner cavity of the acupressure groove (12), and the other end of the second spring (21) is fixedly connected to the inner wall of the acupressure groove (12). A limiting plate (22) is attached to the side of the rocker (19) away from the connecting plate (18), and the limiting plate (22) is fixedly connected to the inner wall of the acupressure groove (12).

7. The modular terminal block as described in claim 1, characterized in that: The grounding terminal (5) has a pre-set bent portion (17).

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