FPC (Flexible Printed Circuit) connecting structure of liquid crystal display module

Abstract

The utility model discloses an FPC connecting structure of liquid crystal display module, including FPC connecting end and PCB connecting end, one end middle part of FPC connecting end is extended with FPC pin, one end middle part of PCB connecting end is provided with the slot that is used for holding FPC pin, first pulling two sets of auxiliary head, two sets of auxiliary head respectively drive the two sets of pull rod to move, and the two sets of pull rod respectively drive the two sets of pull rod to move. Two groups of pull rods respectively drive two groups of moving plates to move, four groups of telescopic rods and four groups of springs start to contract, six groups of fixing blocks are respectively driven to move, then FPC pins are inserted into slots, at the moment, two groups of inserting plates are respectively positioned in two groups of convex slots, two groups of auxiliary heads are loosened, and under the resilience force of the four groups of springs, the FPC pins can be fixed. The two groups of moving plates can be moved, and finally the six groups of fixing blocks are respectively inserted into the six groups of fixing grooves to fix the plug board, so that the FPC pins are prevented from loosening, the welding technology is not needed, and the connection quality of products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC, in particular to an FPC connection structure of a liquid crystal display module. Background Art

[0002] Flexible Printed Circuit (FPC) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the substrate. It has the characteristics of high wiring density, light weight, thin thickness and good bendability.

[0003] By embedding the circuit design on a bendable thin plastic sheet, a large number of precision components can be stacked in a narrow and limited space to form a bendable flexible circuit. This circuit can be bent and folded at will, is light in weight, small in size, has good heat dissipation, and is easy to install, breaking through the traditional interconnection technology. The insulating film forms the base layer of the circuit, and the adhesive bonds the copper foil to the insulating layer. In the multi-layer design, it is bonded to the inner layer. They are also used as protective coverings to isolate the circuit from dust and moisture, and can reduce stress during flexure. The copper foil forms a conductive layer, and the connection methods between FPC and PCB are basically used in the field of electronic technology, including welding connections and connections using connectors.

[0004] However, due to the small pins of the FPC and PCB in the prior art, it is easy to cause bridging or empty soldering during the actual welding process, resulting in poor connection and affecting product quality. Therefore, we need to propose an FPC connection structure for the LCD display module. Utility Model Content

[0005] The purpose of the utility model is to provide an FPC connection structure for a liquid crystal display module, which prevents the FPC pins from loosening and does not require the use of welding technology, thereby ensuring the connection quality of the product and solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The FPC connection structure of the liquid crystal display module includes an FPC connection end and a PCB connection end, an FPC pin extending from the middle of one end of the FPC connection end, a slot for accommodating the FPC pin being provided in the middle of one end of the PCB connection end, plug boards being fixedly connected to both sides of the FPC pin of the FPC connection end, convex grooves matching the plug boards being provided on both sides of the slot of the PCB connection end, two groups of cavities being provided inside the FPC connection end, and fixing components for fixing the two groups of plug boards are respectively provided inside the two groups of cavities.

[0008] Preferably, the two groups of plug plates both include connecting plates and protrusions, three groups of fixing grooves are provided on one side of the two groups of connecting plates, and the two groups of plug plates are both arranged in a convex shape.

[0009] Preferably, the two groups of cavities are symmetrically arranged, and the two groups of cavities are respectively located on one side of the two groups of slots.

[0010] Preferably, the two groups of fixed components respectively include two groups of telescopic rods, and the four groups of telescopic rods are symmetrically fixedly installed inside the two groups of cavities. One end of the two groups of telescopic rods is fixedly connected to a movable plate, and springs are sleeved on the outer walls of the two groups of telescopic rods, and one side of the movable plate is fixedly connected to three groups of fixed blocks.

[0011] Preferably, a pull rod is fixedly connected to the center of one side of the movable plate, one end of the pull rod passes through the PCB connection end and is fixedly connected to an auxiliary head, and the outer wall of the pull rod is slidably connected to the PCB connection end.

[0012] Preferably, one side of the three groups of fixing blocks passes through the PCB connection end and is located inside the convex groove, and the three groups of fixing blocks are respectively inserted into the inside of the three groups of fixing grooves.

[0013] Preferably, one end of the FPC connection end is symmetrically fixedly connected with two groups of limit blocks, and one side of the PCB connection end is provided with a limit groove adapted to the two groups of limit blocks.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the utility model is in use, firstly, the two groups of auxiliary heads are pulled, and the two groups of auxiliary heads respectively drive the two groups of pull rods to move, and the two groups of pull rods respectively drive the two groups of movable plates to move, and make the four groups of telescopic rods and the four groups of springs begin to contract, and respectively drive the six groups of fixed blocks to move, and then the FPC pins are inserted into the interior of the slots, at which time the two groups of plug-in boards are respectively located inside the two groups of convex grooves, and the two groups of auxiliary heads are loosened, and the two groups of movable plates can be moved under the rebound force of the four groups of springs, and finally the six groups of fixed blocks are respectively plugged into the interior of the six groups of fixed grooves to fix the plug-in boards, thereby avoiding the loosening of the FPC pins, and no welding technology is needed, thereby ensuring the connection quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the top of the PCB connection end of the utility model;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0020] In the figure: 1. FPC connecting end; 2. PCB connecting end; 3. FPC pin; 4. slot; 5. plug-in board; 501. connecting board; 502. convex block; 6. convex groove; 7. cavity; 8. fixing groove; 9. telescopic rod; 10. moving plate; 11. spring; 12. fixing block; 13. pull rod; 14. auxiliary head; 15. limit block; 16. limit groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] The FPC connection structure of the liquid crystal display module includes an FPC connection end 1 and a PCB connection end 2, an FPC pin 3 is extended in the middle of one end of the FPC connection end 1, a slot 4 for accommodating the FPC pin 3 is provided in the middle of one end of the PCB connection end 2, plug boards 5 are fixedly connected to both sides of the FPC pin 3 of the FPC connection end 1, and convex grooves 6 adapted to the plug boards 5 are provided on both sides of the PCB connection end 2 located at the slot 4. In actual use, two groups of plug boards 5 are respectively plugged into the inside of the two groups of convex grooves 6, and two groups of cavities 7 are provided inside the FPC connection end 1. Fixing components for fixing the two groups of plug boards 5 are respectively provided inside the two groups of cavities 7 to prevent the FPC pin 3 from loosening;

[0024] The two groups of plug boards 5 each include a connecting plate 501 and a convex block 502. Three groups of fixing grooves 8 are provided on one side of the two groups of connecting plates 501. The two groups of plug boards 5 are arranged in a convex shape. The two groups of plug boards 5 are respectively adapted to the two groups of convex grooves 6. The two groups of convex blocks 502 are respectively inserted into the inside of the two groups of convex grooves 6 to improve stability.

[0025] The two groups of cavities 7 are symmetrically arranged, and the two groups of cavities 7 are respectively located on one side of the two groups of slots 4, and the two groups of cavities 7 are not connected to the two groups of slots 4;

[0026] The two sets of fixed components respectively include two sets of telescopic rods 9, and the four sets of telescopic rods 9 are symmetrically fixedly installed inside the two sets of cavities 7. One end of the two sets of telescopic rods 9 is fixedly connected to a moving plate 10, and the outer walls of the two sets of telescopic rods 9 are sleeved with springs 11. One side of the moving plate 10 is fixedly connected to three sets of fixing blocks 12. The four sets of telescopic rods 9 can respectively improve the stability of the two sets of moving plates 10, ensure that the two sets of moving plates 10 always move horizontally, and prevent the four sets of springs 11 from shaking;

[0027] A pull rod 13 is fixedly connected to the center of one side of the moving plate 10, one end of the pull rod 13 passes through the PCB connection end 2 and is fixedly connected to an auxiliary head 14, and the outer wall of the pull rod 13 is slidably connected to the PCB connection end 2. By pulling the two sets of auxiliary heads 14, the two sets of auxiliary heads 14 can respectively drive the two sets of pull rods 13 to move, at this time, the two sets of moving plates 10 are forced to start moving, and the four sets of telescopic rods 9 and the four sets of springs 11 start to shrink respectively, and the two sets of moving plates 10 will respectively drive the three sets of fixed blocks 12 fixedly connected thereto to move when moving;

[0028] One side of the three sets of fixing blocks 12 all penetrates the PCB connection end 2 and is located inside the convex groove 6, and the three sets of fixing blocks 12 are respectively plugged into the inside of the three sets of fixing grooves 8. After the two sets of plug-in boards 5 are respectively located inside the two sets of convex grooves 6, it is only necessary to loosen the two sets of auxiliary heads 14. Under the action of the rebound force of the four sets of springs 11, the two sets of moving plates 10 are moved and drive the six sets of fixing blocks 12 to move, so that the six sets of fixing blocks 12 are respectively plugged into the inside of the six sets of fixing grooves 8;

[0029] One end of the FPC connection end 1 is symmetrically fixedly connected with two groups of limit blocks 15, and one side of the PCB connection end 2 is provided with a limit groove 16 adapted to the two groups of limit blocks 15. When the FPC connection end 1 is connected to the PCB connection end 2, the two groups of limit blocks 15 are respectively located inside the two groups of limit grooves 16, which can further improve the stability of the FPC connection end 1 after being connected to the PCB connection end 2.

[0030] Working principle: When the utility model is used, first pull the two groups of auxiliary heads 14, the two groups of auxiliary heads 14 respectively drive the two groups of pull rods 13 to move, the two groups of pull rods 13 respectively drive the two groups of movable plates 10 to move, and make the four groups of telescopic rods 9 and the four groups of springs 11 begin to shrink, and respectively drive the six groups of fixed blocks 12 to move, and then insert the FPC pins 3 into the inside of the slots 4, at this time the two groups of plug-in boards 5 are respectively located inside the two groups of convex grooves 6, loosen the two groups of auxiliary heads 14, under the rebound force of the four groups of springs 11, the two groups of movable plates 10 can be moved, and finally the six groups of fixed blocks 12 are respectively plugged into the inside of the six groups of fixed grooves 8, fix the plug-in boards 5, avoid the loosening of the FPC pins 3, and do not need to use welding technology, thereby ensuring the connection quality of the product.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An FPC connection structure of a liquid crystal display module, comprising an FPC connection end (1) and a PCB connection end (2), characterized in that: An FPC pin (3) extends from the middle of one end of the FPC connection end (1); a slot (4) for accommodating the FPC pin (3) is provided in the middle of one end of the PCB connection end (2); plug boards (5) are fixedly connected to both sides of the FPC pin (3) of the FPC connection end (1); convex grooves (6) adapted to the plug boards (5) are provided on both sides of the slot (4) of the PCB connection end (2); two groups of cavities (7) are provided inside the FPC connection end (1); fixing components for fixing the two groups of plug boards (5) are respectively provided inside the two groups of cavities (7).

2. The FPC connection structure of the liquid crystal display module according to claim 1, characterized in that: The two groups of plug plates (5) both comprise a connecting plate (501) and a convex block (502); three groups of fixing grooves (8) are provided on one side of the two groups of connecting plates (501); and the two groups of plug plates (5) are both arranged in a convex shape.

3. The FPC connection structure of the liquid crystal display module according to claim 1, characterized in that: The two groups of cavities (7) are symmetrically arranged, and the two groups of cavities (7) are respectively located on one side of the two groups of slots (4).

4. The FPC connection structure of the liquid crystal display module according to claim 1, characterized in that: The two groups of fixed components respectively include two groups of telescopic rods (9), and the four groups of telescopic rods (9) are symmetrically fixedly installed inside the two groups of cavities (7), one end of the two groups of telescopic rods (9) is fixedly connected to a moving plate (10), and springs (11) are sleeved on the outer walls of the two groups of telescopic rods (9), and one side of the moving plate (10) is fixedly connected to three groups of fixed blocks (12).

5. The FPC connection structure of the liquid crystal display module according to claim 4, characterized in that: A pull rod (13) is fixedly connected at the center of one side of the movable plate (10), one end of the pull rod (13) passes through the PCB connection end (2) and is fixedly connected to an auxiliary head (14), and the outer wall of the pull rod (13) is slidably connected to the PCB connection end (2).

6. The FPC connection structure of the liquid crystal display module according to claim 4, characterized in that: One side of the three groups of fixing blocks (12) passes through the PCB connection end (2) and is located inside the convex groove (6), and the three groups of fixing blocks (12) are respectively inserted into the inside of the three groups of fixing grooves (8).

7. The FPC connection structure of the liquid crystal display module according to claim 1, characterized in that: One end of the FPC connection end (1) is symmetrically fixedly connected to two groups of limit blocks (15), and one side of the PCB connection end (2) is provided with a limit groove (16) adapted to the two groups of limit blocks (15).

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