A sink plate type FPC connector and a lamp plate module

Abstract

The utility model relates to a kind of sinking plate type FPC connector and lamp plate module, wherein sinking plate type FPC connector includes pedestal, insulating baffle, lock strip, first terminal, second terminal, third terminal and fixed sheet;First terminal, second terminal and third terminal are inserted from back to front on pedestal and are resisted by insulating baffle, and first terminal is located in the middle of pedestal;Limiting insert piece, first contact arm, fixed insert piece and first lead-out pin are equipped on first terminal;Third terminal has second contact arm and second lead-out pin;First contact arm and second contact arm are arranged side by side and extend into plug-in port, and in left-right direction, the width of second contact arm is greater than the width of first contact arm;First lead-out pin and second lead-out pin are led out from the upper end of insulating baffle backward;The utility model has reasonable structure, is easy to assemble, can carry large current and reliable signal transmission, and is conducive to reducing the length size of sinking plate type FPC connector, with good practicability.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a recessed FPC connector and a light board module. Background Technology

[0002] In LCD or OLED display devices, the backlight module, as the core component of the backlight source, needs to be connected to the main control circuit board via an FPC cable for power supply and signal control. Traditional backlight FPC connectors typically face two major challenges: firstly, they need to handle the large current required to drive the LED chips; secondly, they must have the smallest possible size to accommodate the increasingly narrow bezels of displays.

[0003] Currently, most FPC connectors on the market use terminals with identical structural shapes arranged side by side. These terminals simultaneously handle both current and signal transmission. Due to the limited size and contact area of ​​a single terminal, its rated current carrying capacity is relatively low. To meet the high current requirements of lamp board modules, designers have to increase the number of terminals, using multiple terminals to conduct current together. This approach directly leads to an increase in connector length, thus occupying space on the lamp board.

[0004] Furthermore, there is room for improvement in the assembly process and reliability of traditional connectors. For example, if the terminals are not securely fixed, they are prone to loosening under vibration or frequent insertion and removal, affecting the stability of the electrical connection. Utility Model Content

[0005] The purpose of this utility model is to provide a recessed FPC connector and a lamp board module. The recessed FPC connector can meet the requirements of carrying large current and control its length dimensions. In addition, the connector also has the advantages of stable terminal installation and reliable electrical connection.

[0006] This utility model provides the following technical solution:

[0007] In a first aspect, this utility model provides a recessed FPC connector, comprising a base, and an insulating baffle, a locking strip, a first terminal, a second terminal, a third terminal, and a fixing plate mounted on the base; a wire insertion port is provided at the front of the base, and two fixing plates are respectively inserted and fixed to the upper parts of both ends of the base; the first terminal, the second terminal, and the third terminal are inserted into the base from back to front and are limited by the insulating baffle, with the first terminal located in the middle of the base; the first terminal is provided with a limiting insert, a first contact arm, a fixing insert, and a first lead-out foot; the fixing insert is inserted and fixed to the base; the limiting insert and the second terminal are arranged side by side and are both connected to the locking strip; the third terminal has a second contact arm and a second lead-out foot; the first contact arm and the second contact arm are arranged side by side and extend into the wire insertion port; in the left-right direction, the width of the second contact arm is greater than the width of the first contact arm; the first lead-out foot and the second lead-out foot extend backward from the upper end of the insulating baffle.

[0008] As a preferred embodiment of this utility model, the insulating baffle is provided with a positioning plug, and the base is provided with a positioning hole on the rear side, wherein the positioning plug and the positioning hole are tightly fitted together.

[0009] As a preferred embodiment of this utility model, the front side of the insulating baffle is provided with a first slot and a second slot at positions corresponding to each first terminal and each third terminal.

[0010] As a preferred embodiment of this utility model, the lower end of the base is provided with a mounting groove communicating with the plug-in port, and the locking bar is disposed in the mounting groove.

[0011] As a preferred embodiment of this utility model, the fixing piece is inserted and fixed onto the base from front to back.

[0012] As a preferred embodiment of this utility model, each of the third terminals has two second contact arms spaced apart from each other.

[0013] As a preferred embodiment of this utility model, the upper end of the insulating baffle has a rearwardly extending flange.

[0014] Secondly, the present invention provides a lamp board module, including a lamp board, a connector and a ribbon cable. The connector adopts the recessed FPC connector described above. The lamp board is provided with mounting holes. The connector is inserted into the mounting holes from top to bottom. The fixing piece, the first lead and the second lead are welded to the lamp board. The ribbon cable is inserted into the plug-in port and pressed by the locking strip. The ribbon cable is in contact with the first contact arm and the second contact arm.

[0015] The beneficial effects of this utility model are as follows: By adopting a terminal design with an irregular structure, the width of the second contact arm of the third terminal is significantly increased, enabling it to independently carry large currents. This eliminates the need to increase the number of terminals to meet high current requirements, effectively reducing the overall length and volume of the connector and conforming to the trend of miniaturization. Simultaneously, the first terminal is dedicated to signal transmission, achieving separation of current and signal, improving transmission stability. Furthermore, the locking bar, in the locked state, presses against the ribbon cable, ensuring reliable contact between the first and second contact arms and the ribbon cable, guaranteeing reliable electrical connection. Secondly, the first and third terminals are inserted from back to front and fixed by an insulating baffle, ensuring structural stability. In addition, the fixing plate is inserted from front to back, opposite to the direction in which the first and third terminals are inserted into the base. After the fixing plate, the first lead, and the second lead are welded to the lamp board, the reliability of the fixation between the recessed FPC connector and the lamp board is ensured, effectively enhancing the stability and vibration resistance of the connector structure and ensuring connection reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the recessed plate type FPC connector of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the recessed plate type FPC connector of this utility model from another perspective.

[0018] Figure 3 This is a top view of the recessed FPC connector of this utility model.

[0019] Figure 4 For along Figure 3 A sectional view cut along line AA.

[0020] Figure 5 This is a schematic diagram of the base structure in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the third terminal in this utility model.

[0022] Figure 7 This is an exploded view of the recessed plate type FPC connector of this utility model.

[0023] Figure 8 This is a sectional perspective view of the lamp panel module in this utility model.

[0024] The attached figures are labeled as follows: 1. Base; 11. Socket; 12. Positioning socket; 13. Mounting slot; 2. Insulating baffle; 21. Positioning block; 22. First slot; 23. Second slot; 24. Edge; 3. Locking bar; 4. First terminal; 41. Limiting insert; 42. First contact arm; 43. Fixing insert; 44. First lead-out foot; 5. Second terminal; 6. Third terminal; 61. Second contact arm; 62. Second lead-out foot; 7. Fixing piece; 8. Lamp board; 81. Mounting hole; 9. Cable. Detailed Implementation

[0025] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Example 1

[0027] The structure of the recessed FPC connector in this embodiment is as follows: Figures 1 to 7 As shown, it includes a base 1, and an insulating baffle 2, a locking strip 3, a first terminal 4, a second terminal 5, a third terminal 6, and a fixing plate 7 mounted on the base 1; the base 1 has a wire insertion port 11 for inserting a ribbon cable 9; two fixing plates 7 are respectively inserted and fixed to the upper parts of both ends of the base 1, and the fixing plates 7 are used to weld to the lamp board 8 to enhance the stability of the connector fixing; the first terminal 4, the second terminal 5, and the third terminal 6 are inserted into the base 1 from back to front and are blocked and limited by the insulating baffle 2, and the first terminal 4 is located in the middle of the base 1; the first terminal 4 is provided with a limiting insert 41, a first contact arm 42, a fixing insert 43, and a first lead-out foot 44; the fixing insert 43 is inserted and fixed to the base 1; the limiting insert 41, the second terminal 5, and the third terminal 6 are respectively inserted and fixed to the base 1; the first terminal 4 is provided with a limiting insert 41, a first contact arm 42, a fixing insert 43, and a first lead-out foot 44. The plate 41 and the second terminal 5 are arranged side by side and both are connected to the locking bar 3. The locking bar 3 has two states: locked and open. When the locking bar 3 is locked, it can press the ribbon cable 9 inserted into the plug-in port 11. When the locking bar is open, the ribbon cable 9 can be easily inserted and removed. The third terminal 6 has a second contact arm 61 and a second lead-out foot 62. The first contact arm 42 and the second contact arm 61 are arranged side by side and extend into the plug-in port 11. In the left-right direction (i.e., the length direction of the base 1), the width of the second contact arm 61 is greater than the width of the first contact arm 42, so that the contact area between the second contact arm 61 and the ribbon cable 9 is greater than the contact area between the first contact arm 42 and the ribbon cable 9. The first lead-out foot 44 and the second lead-out foot 62 are led out from the upper end of the insulating baffle 2.

[0028] In this embodiment, by adopting a terminal design with an irregular structure, the width of the second contact arm 61 of the third terminal 6 is significantly increased, enabling it to independently carry a large current. This eliminates the need to increase the number of terminals to meet the high current requirements, effectively reducing the overall length and volume of the connector and conforming to the trend of miniaturization. At the same time, the first terminal 4 is dedicated to signal transmission, realizing the separation of current and signal, improving transmission stability. Moreover, the locking bar presses against the ribbon cable in the locked state, ensuring reliable contact between the first and second contact arms and the ribbon cable, thus ensuring the reliability of the electrical connection.

[0029] Combination Figure 2 , Figure 5 and Figure 7 As shown, the insulating baffle 2 is provided with a positioning plug 21, and the base 1 is provided with a positioning hole 12 on the rear side. The positioning plug 21 is tightly fitted into the positioning hole 12. Through the tight fit between the positioning plug 21 and the positioning hole 12, the insulating baffle 2 and the base 1 are firmly fixed. This design can effectively prevent the insulating baffle 2 from shaking during subsequent use and further enhance the stability of the terminal that it supports and limits.

[0030] See Figure 7 As shown, the front side of the insulating baffle 2 is provided with a first slot 22 and a second slot 23 at positions corresponding to each first terminal 4 and each third terminal 6; this design enables physical separation and precise positioning between adjacent third terminals 6 and second terminals 5, increasing the creepage distance between adjacent terminals.

[0031] See further Figure 4 and Figure 5 The base 1 has a mounting groove 13 at its lower end that communicates with the connector 11. The locking bar 3 is located in the mounting groove 13. When the ribbon cable is inserted into the connector 11, the locking bar 3 can be flipped to the locked state to apply pressure to the ribbon cable 9, thereby strengthening the connection between the ribbon cable 9 and the connector and ensuring reliable contact between the ribbon cable 9 and the first contact arm 42 and the second contact arm 62. When the locking bar 3 is flipped to the open state, no pressure is applied to the ribbon cable 9. At this time, the ribbon cable 9 can be pulled out from the connector 11 and inserted into the connector 11, which improves the practicality.

[0032] See Figure 1 , Figure 2 and Figure 7As shown, the fixing piece 7 is inserted and fixed to the base 1 from front to back, which is opposite to the direction in which the first terminal 4 and the second terminal 6 are inserted into the base 1. In this way, after the recessed FPC connector is inserted into the mounting hole 81 of the lamp board 8, the fixing piece 7, the first lead 44 and the second lead 62 are welded and fixed to the lamp board 8, which can effectively limit the base 1 (i.e., the recessed FPC connector) from multiple directions, thereby ensuring a firm connection between the recessed FPC connector and the lamp board 8.

[0033] See Figure 6 Each of the third terminals 6 has two second contact arms 61 spaced apart from each other. This design forms a double-point contact between the third terminal 6 and the gold fingers of the ribbon cable 9, increasing the effective contact area. This not only further improves the current carrying capacity, but also significantly enhances the reliability and stability of the electrical connection, avoiding the risk of overheating due to poor contact.

[0034] See Figure 2 and Figure 4 The upper end of the insulating baffle 2 has a rearwardly extending flange 24. After the recessed FPC connector is installed on the lamp board 8, the flange 24 overlaps with the upper edge of the mounting hole 81, thereby forming an effective isolation between the first terminal 4, the third terminal 6 and the lamp board 8, thereby improving the electrical safety performance and reliability of the product.

[0035] Example 2

[0036] The structure of the lamp panel module in this embodiment is as follows: Figure 8 As shown, it includes a lamp board 8, a connector, and a ribbon cable 9. The connector adopts the recessed FPC connector described in Embodiment 1. The lamp board 8 is provided with a mounting hole 81. The connector is inserted into the mounting hole 81 from top to bottom. The fixing piece 7, the first lead 44, and the second lead 62 are soldered to the lamp board 8. The ribbon cable 9 is inserted into the plug port 11 and pressed by the locking strip 3 to ensure reliable contact between the ribbon cable 9 and the first terminal 4 (first contact arm 42) and the second terminal 6 (second contact arm 61). Since this lamp board module adopts the recessed FPC connector in Embodiment 1, this lamp board module also has all its advantages.

[0037] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A recessed FPC connector, characterized in that, It includes a base (1), and an insulating baffle (2), a locking bar (3), a first terminal (4), a second terminal (5), a third terminal (6), and a fixing piece (7) mounted on the base (1); The base (1) is provided with a wire insertion port (11) at the front, and two fixing pieces (7) are respectively inserted and fixed at the upper part of both ends of the base (1); the first terminal (4), the second terminal (5) and the third terminal (6) are inserted into the base (1) from back to front and are blocked and limited by the insulating baffle (2); the first terminal (4) is located in the middle of the base (1); The first terminal (4) is provided with a limiting insert (41), a first contact arm (42), a fixing insert (43) and a first lead-out foot (44); the fixing insert (43) is inserted and fixed to the base (1); The limiting insert (41) and the second terminal (5) are arranged side by side and are both connected to the locking bar (3); The third terminal (6) has a second contact arm (61) and a second lead-out foot (62); the first contact arm (42) and the second contact arm (61) are arranged side by side and extend into the plug-in port (11); in the left-right direction, the width of the second contact arm (61) is greater than the width of the first contact arm (42); the first lead-out foot (44) and the second lead-out foot (62) are led out from the upper end of the insulating baffle (2) to the rear.

2. The recessed FPC connector according to claim 1, characterized in that, The insulating baffle (2) is provided with a positioning plug (21), and the base (1) is provided with a positioning hole (12) on the rear side. The positioning plug (21) and the positioning hole (12) are tightly fitted together.

3. A recessed FPC connector according to claim 1, characterized in that, The insulating baffle (2) has a first slot (22) and a second slot (23) on its front side corresponding to each first terminal (4) and each third terminal (6).

4. A recessed FPC connector according to claim 1, characterized in that, The lower end of the base (1) is provided with a mounting groove (13) that communicates with the plug-in port (11), and the locking bar (3) is located in the mounting groove (13).

5. A recessed FPC connector according to claim 1, characterized in that, The fixing piece (7) is inserted and fixed to the base (1) from front to back.

6. A recessed FPC connector according to claim 1, characterized in that, Each of the third terminals (6) has two second contact arms (61) spaced apart from each other.

7. A recessed FPC connector according to claim 1, characterized in that, The insulating baffle (2) has a rearwardly extending flange (24) at its upper end.

8. A light panel module, characterized in that, The device includes a lamp board (8), a connector, and a ribbon cable (9). The connector is a recessed FPC connector as described in any one of claims 1 to 7. The lamp board (8) has a mounting hole (81). The connector is inserted into the mounting hole (81) from top to bottom. The fixing piece (7), the first lead-out pin (44), and the second lead-out pin (62) are welded to the lamp board (8). The ribbon cable (9) is inserted into the plug-in port (11) and pressed by the locking strip (3). The ribbon cable (9) contacts the first contact arm (42) and the second contact arm (61).

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