Circuit board structure of general FPC

Abstract

The utility model discloses a circuit board structure of a general FPC (Flexible Printed Circuit), which comprises a PLC (Programmable Logic Controller) circuit board and is characterized in that a protection mechanism is arranged at the bending part of the PLC circuit board, a plurality of flexible support frame rods are arranged at one end of the PLC circuit board, the protection mechanism comprises an inner support rod and a U-shaped clamping plate, the protection mechanism is attached to and wraps the inner side of the bent position of the PLC circuit board, and the two U-shaped clamping plates are slidably connected to the two sides of the inner supporting rod. The PLC circuit board is internally supported, clamped and fixed through the inner supporting rod and the two U-shaped clamping plates, so that the inner supporting rod can stably support and protect the bent position of the PLC circuit board, the situation that when the PLC circuit board is excessively bent, an internal circuit is damaged, and electrical connection with equipment is affected is prevented, stable use of the PLC circuit board is guaranteed, and the service life of the PLC circuit board is prolonged. According to the utility model, the cost loss caused by the bending damage of the PLC circuit board is avoided, the durability of the PLC circuit board is improved, and the long-term use of the PLC circuit board is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of FPC circuit board technology, and in particular to a circuit board structure for a general-purpose FPC. Background Technology

[0002] FPC (Flexible Printed Circuit) is a type of printed circuit board with high reliability and excellent flexibility. It consists of an insulating film, conductors, and adhesives. It has advantages such as high wiring density, light weight, thinness, foldability, and the ability to withstand dynamic bending movements. It is widely used in consumer electronics, automotive electronics, medical devices, aerospace and other fields.

[0003] However, in practical applications, FPCs also face a series of problems. On the one hand, different devices have different shapes and internal structures, so sometimes it is necessary to bend the FPC circuit board to improve its adaptability in different usage scenarios. Because the flexible circuit board itself has a certain degree of toughness, bending may cause bulges and affect the arrangement of other components. Therefore, in a limited space, the conventional solution is to use other components to squeeze the flexible circuit board, but if the flexible circuit board is bent excessively, it is very easy to be damaged, affecting its performance and causing economic losses. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a universal FPC circuit board structure that can solve the problem of circuit board damage caused by excessive bending.

[0006] To achieve the above objectives, this utility model proposes a universal FPC circuit board structure, including a PLC circuit board. The PLC circuit board is characterized by a protective mechanism at its bends, and several flexible support rods at one end of the PLC circuit board. The protective mechanism includes an inner support rod and U-shaped clamps. The protective mechanism fits snugly against and wraps around the inner side of the bend of the PLC circuit board. Two U-shaped clamps are slidably connected to both sides of the inner support rod, and the two U-shaped clamps contact the upper and lower surfaces of the PLC circuit board. The several flexible support rods are arranged in an array, and several bendable notches are provided on the sidewalls of the flexible support rods. Two connecting rods are provided between the two U-shaped clamps. One connecting rod has two threaded grooves, and the connecting rod is threadedly connected to the inner walls of the two U-shaped clamps through the two threaded grooves. The other connecting rod is slidably connected to the inner walls of the two U-shaped clamps.

[0007] The universal FPC circuit board structure of this utility model uses an inner support rod and two U-shaped clamps to internally support and clamp the PLC circuit board, so that the inner support rod can stably support and protect the bending part of the PLC circuit board, preventing damage to the internal circuitry when the PLC circuit board is excessively bent, which would affect the electrical connection with the equipment, ensure the stable use of the PLC circuit board, avoid cost losses caused by the bending damage of the PLC circuit board, and improve the durability of the PLC circuit board, which is conducive to the long-term use of the PLC circuit board.

[0008] By reinforcing the PLC circuit board with several flexible support rods, the bending resistance of the PLC circuit board is further improved, preventing damage to the internal circuitry when the PLC circuit board is excessively bent, which could affect the electrical connection with the equipment and ensure the stable use of the PLC circuit board.

[0009] In addition, the circuit board structure of the general-purpose FPC proposed above according to this utility model may also have the following additional technical features:

[0010] Specifically, the inner support rod has a plurality of limiting slots on its side wall, and the plurality of limiting slots correspond one-to-one with the positions of the plurality of flexible support rods. The flexible support rods are engaged and connected to the inner wall of the corresponding limiting slots.

[0011] Specifically, each of the two U-shaped clamps is provided with an anti-slip pad on the side near the PLC circuit board, and the U-shaped clamps contact the PLC circuit board through the corresponding anti-slip pads.

[0012] Specifically, each end of the inner support rod is equipped with two lateral support plates, and the two connecting rods are rotatably connected to the inner walls of the corresponding two lateral support plates.

[0013] Specifically, a rotating ring is installed on the side wall of the connecting rod having the threaded groove, and the rotating ring is rotatably connected between the two lateral support plates.

[0014] Specifically, the rotating ring has several friction grooves on its sidewall, and several spherical rolling elements are installed at both ends of the bottom of the rotating ring. The spherical rolling elements are slidably connected to one end of the corresponding lateral support plate.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the protective mechanism and flexible support frame rod in this utility model;

[0019] Figure 3 This utility model Figure 1 A magnified structural diagram of part A in the middle;

[0020] Figure 4 This utility model Figure 2 A magnified structural diagram of section B in the middle;

[0021] Figure 5 This is a three-dimensional enlarged structural diagram of the connecting rod and other components in this utility model.

[0022] As shown in the figure:

[0023] 1. PLC circuit board; 2. Protective mechanism; 21. Inner support rod; 211. Limiting slot; 22. U-shaped clamp; 221. Anti-slip pad; 23. Lateral support plate; 3. Flexible support frame rod; 31. Easy-bend notch; 4. Connecting rod; 41. Threaded groove; 42. Rotating ring; 421. Friction groove; 422. Spherical rolling element. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0025] The circuit board structure of a general-purpose FPC according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown, a general-purpose FPC circuit board structure according to an embodiment of the present invention may include a PLC circuit board 1, a protective mechanism 2 provided at the bend of the PLC circuit board 1, and a plurality of flexible support rods 3 provided at one end of the PLC circuit board 1.

[0027] The protective mechanism 2 includes an inner support rod 21 and a U-shaped clamp 22. The protective mechanism 2 fits and wraps around the inner side of the bend of the PLC circuit board 1. The two U-shaped clamps 22 are slidably connected to both sides of the inner support rod 21, and the two U-shaped clamps 22 contact the upper and lower surfaces of the PLC circuit board 1.

[0028] It should be noted that the PLC circuit board 1 described in this embodiment is clamped between two U-shaped clamps 22 and an inner support rod 21.

[0029] Among them, several flexible support rods 3 are arranged in an array, and several flexible support rods 3 have several bendable notches 31 on their side walls.

[0030] It should be noted that when the flexible support rod 3 described in this embodiment is bent, the easily bendable notch 31 is enlarged or reduced accordingly.

[0031] Two connecting rods 4 are provided between the two U-shaped clamps 22. One of the connecting rods 4 has two threaded grooves 41, and the connecting rod 4 is threaded to the inner wall of the two U-shaped clamps 22 through the two threaded grooves 41 respectively. The other connecting rod 4 is slidably connected to the inner wall of the two U-shaped clamps 22.

[0032] It should be noted that the two connecting rods 4 described in this embodiment are symmetrically distributed.

[0033] Specifically, to improve the protection capability of the PLC circuit board 1 at the bend, the PLC circuit board 1 is connected to the equipment through the connection terminals at both ends to realize its data control and conductivity functions. The protective mechanism 2 is selectively used. When the PLC circuit board 1 needs to adapt to the connection position with a small spacing, the PLC circuit board 1 is folded to achieve the versatility and good adaptability of the PLC circuit board 1. At this time, the protective mechanism 2 can be used in conjunction. The protective mechanism 2 is located at the bend position of the PLC circuit board 1, and the bend of the PLC circuit board 1 wraps around the protective mechanism 2, so that the protective mechanism 2 can support and limit the interior of the PLC circuit board 1, preventing the bending angle of the protective mechanism 2 from being too large. In addition, several flexible support rods 3 reinforce the PLC circuit board 1, so that when the PLC circuit board 1 bends, it can drive several flexible support rods 3 to bend together. The flexible support rods 3, by utilizing their own characteristic of not being able to bend too much, can restrict the bending ability of the PLC circuit board 1. The easy-bend notch 31 provides room for the flexible support rods 3 to bend, making it easier for the flexible support rods 3 to perform the corresponding bending action. This design improves the bending protection of the PLC circuit board 1, preventing damage to the internal circuitry and electrical connection with the equipment when the PLC circuit board 1 is excessively bent. This ensures the stable use of the PLC circuit board 1, avoids cost losses due to bending damage, and enhances its durability, which is beneficial for its long-term use. The protective mechanism 2 clamps the bent part of the PLC circuit board 1 with two inner support rods 21, locking the PLC circuit board 1 and ensuring the stability of the connection between the protective mechanism 2 and the PLC circuit board 1. This allows the protective mechanism 2 to stably protect the bent part of the PLC circuit board 1. Two connecting rods 4 are located at the two ends of the two U-shaped clamps 22. Both connecting rods 4 guide the sliding of the two U-shaped clamps 22 as they move closer or further apart. One of the connecting rods 4 adjusts the spacing between the two U-shaped clamps 22 through two threaded grooves 41. The two threaded grooves 41 have different opening directions, allowing the two U-shaped clamps 22 to be adjusted synchronously and in opposite directions, which is beneficial for installation and disassembly during device use.

[0034] In one embodiment of this utility model, such as Figures 1-5 As shown, the inner support rod 21 has several limiting slots 211 on its side wall. The several limiting slots 211 correspond one-to-one with the positions of several flexible support rods 3. The flexible support rods 3 are engaged and connected to the inner wall of the corresponding limiting slots 211.

[0035] It should be noted that the limiting slot 211 described in this embodiment corresponds to the size of the easily bendable notch 31.

[0036] Specifically, during use, the inner support rod 21 makes way for the easily bendable notch 31 through several limiting slots 211, preventing the inner support rod 21 from interfering with the bending operation of the easily bendable notch 31, and ensuring that the PLC circuit board 1 can stably maintain a close fit with the protective mechanism 2, thereby improving the protective effect. Furthermore, the engagement of the easily bendable notch 31 with the limiting slots 211 improves the stability of the protective mechanism 2 inside the PLC circuit board 1, preventing it from slipping.

[0037] In one embodiment of this utility model, such as Figures 1-5 As shown, both U-shaped clamps 22 are provided with anti-slip pads 221 on the side near the PLC circuit board 1, and the U-shaped clamps 22 contact the PLC circuit board 1 through the corresponding anti-slip pads 221.

[0038] It should be noted that the anti-slip pad 221 described in this embodiment has a greater coefficient of friction than the U-shaped clamp 22.

[0039] Specifically, when the two U-shaped clamps 22 clamp the PLC circuit board 1, the U-shaped clamps 22 contact and press with the PLC circuit board 1 through the anti-slip pads 221. The anti-slip pads 221 increase the friction between the U-shaped clamps 22 and the PLC circuit board 1, thereby improving the locking effect and stability of the U-shaped clamps 22 on the position of the inner support rod 21.

[0040] In one embodiment of this utility model, such as Figures 1-5 As shown, two lateral support plates 23 are installed at both ends of the inner support rod 21, and two connecting rods 4 are rotatably connected to the inner walls of the corresponding two lateral support plates 23.

[0041] It should be noted that the connecting rod 4 described in this embodiment passes through the corresponding two lateral support plates 23.

[0042] Specifically, the inner support rod 21 supports and limits the two connecting rods 4 through four lateral support plates 23, so that the two connecting rods 4 can rotate in a fixed position, thereby improving the stability of the position adjustment of the connecting rods 4 and the threaded groove 41 on the two U-shaped clamps 22.

[0043] In one embodiment of this utility model, such as Figures 1-5 As shown, a rotating ring 42 is installed on the side wall of the connecting rod 4 with a threaded groove 41, and the rotating ring 42 is rotatably connected between two lateral support plates 23.

[0044] It should be noted that the connecting rod 4 described in this embodiment is limited between the two corresponding lateral support plates 23 by the rotating ring 42.

[0045] Specifically, the rotating ring 42 facilitates the driving and rotation of the connecting rod 4 by personnel, and the two lateral support plates 23 limit the rotating ring 42, so that the rotating ring 42 can drive the connecting rod 4 to maintain a stable position, further improving the positional stability of the connecting rod 4 during use.

[0046] In one embodiment of this utility model, such as Figures 1-5 As shown, the side wall of the rotating ring 42 is provided with several friction grooves 421, and several spherical rolling elements 422 are installed at both ends of the bottom of the rotating ring 42. The spherical rolling elements 422 are slidably connected to one end of the corresponding lateral support plate 23.

[0047] It should be noted that the plurality of friction grooves 421 and the plurality of spherical rolling elements 422 described in this embodiment are all distributed in a circumferential array.

[0048] Specifically, the friction grooves 421 on the rotating ring 42 facilitate the increase of friction between the rotating ring 42 and the personnel, thereby facilitating the driving rotation of the rotating ring 42. The rotating ring 42 drives the connecting rod 4 to rotate, thereby completing the adjustment of the distance between the two U-shaped clamps 22.

[0049] In summary, the general-purpose FPC circuit board structure of this utility model embodiment allows for bending of the PLC circuit board 1. Both ends of the PLC circuit board 1 are inserted into the space between the inner support rod 21 and the two U-shaped clamps 22. The inner support rod 21 is placed at the bend of the PLC circuit board 1, and it aligns with the flexible support frame rod 3 via the limiting slot 211. Then, the rotating ring 42 is rotated, causing the corresponding connecting rod 4 to rotate. The connecting rod 4 adjusts the distance between the two U-shaped clamps 22 via two threaded grooves 41, allowing the two U-shaped clamps 22 to simultaneously clamp and fix the PLC circuit board 1 at both ends of the inner support rod 21. This locks the protective mechanism 2 with the PLC circuit board 1, preventing damage to the internal circuitry and affecting the electrical connection with the equipment when the PLC circuit board 1 is excessively bent. This ensures stable use of the PLC circuit board 1 and avoids cost losses due to damage caused by bending.

[0050] In the description of this specification, 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A circuit board structure for a general-purpose FPC, comprising a PLC circuit board (1), characterized in that, The PLC circuit board (1) is equipped with a protective mechanism (2) at the bend, and a number of flexible support rods (3) are provided at one end of the PLC circuit board (1). The protective mechanism (2) includes an inner support rod (21) and a U-shaped clamp (22). The protective mechanism (2) fits and wraps around the inner side of the bend of the PLC circuit board (1). The two U-shaped clamps (22) are slidably connected to both sides of the inner support rod (21). The two U-shaped clamps (22) contact the upper and lower surfaces of the PLC circuit board (1). Several flexible support rods (3) are arranged in an array, and several flexible support rods (3) have several bendable notches (31) on their side walls. Two connecting rods (4) are provided between the two U-shaped clamps (22). One of the connecting rods (4) has two threaded grooves (41), and the connecting rod (4) is threaded to the inner wall of the two U-shaped clamps (22) through the two threaded grooves (41) respectively. The other connecting rod (4) is slidably connected to the inner wall of the two U-shaped clamps (22).

2. The circuit board structure of a general-purpose FPC according to claim 1, characterized in that, The inner support rod (21) has several limiting slots (211) on its side wall. The positions of the several limiting slots (211) correspond one-to-one with the positions of the several flexible support rods (3). The flexible support rods (3) are engaged and connected to the inner wall of the corresponding limiting slots (211).

3. The circuit board structure of a general-purpose FPC according to claim 1, characterized in that, Both of the U-shaped clamps (22) are provided with anti-slip pads (221) on the side near the PLC circuit board (1), and the U-shaped clamps (22) contact the PLC circuit board (1) through the corresponding anti-slip pads (221).

4. The circuit board structure of a general-purpose FPC according to claim 1, characterized in that, Two lateral support plates (23) are installed at both ends of the inner support rod (21), and the two connecting rods (4) are rotatably connected to the inner walls of the corresponding two lateral support plates (23).

5. The circuit board structure of a general-purpose FPC according to claim 4, characterized in that, The connecting rod (4) with the threaded groove (41) has a rotating ring (42) mounted on its side wall, and the rotating ring (42) is rotatably connected between the two lateral support plates (23).

6. The circuit board structure of a general-purpose FPC according to claim 5, characterized in that, The rotating ring (42) has several friction grooves (421) on its side wall. Several spherical rolling bodies (422) are installed at both ends of the bottom of the rotating ring (42). The spherical rolling bodies (422) are slidably connected to one end of the corresponding side support plate (23).

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