High-precision multilayer display screen circuit board
By designing the dual limit structure of the cable mount and the compression rod on the multi-layer display circuit board, the poor contact problem caused by temperature changes is solved, the stability and reliability of the cable and circuit board are improved, and high-precision multi-layer display connection is achieved.
Patent Information
- Application Number
- CN202421334106.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-12
Smart Images
Figure CN222884840U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit boards, in particular to a high-precision multi-layer display screen circuit board. Background Art
[0002] Double-sided boards have a dielectric layer in the middle and wiring layers on both sides. Multi-layer boards have multiple wiring layers, with a dielectric layer between every two layers. The dielectric layer can be made very thin. Multi-layer circuit boards have at least three conductive layers, two of which are on the outer surface, and the remaining layer is synthesized inside the insulating board. The electrical connection between them is usually achieved through plated through holes on the cross section of the circuit board.
[0003] The multi-layer circuit board is generally connected to the external display screen through a flat cable. When the traditional flat cable is installed, it only uses a frame-type metal frame to press the contact position of the flat cable and the circuit board. The locking structure is relatively simple. Since the frame-type metal frame has a certain span, it will expand and contract due to temperature changes in the later stage, resulting in a bulge in the middle, which in turn leads to poor contact between the flat cable and the contact points of the multi-layer circuit board. Based on this, a high-precision multi-layer display screen circuit board is proposed to solve the above problem. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a high-precision multi-layer display screen circuit board, which effectively solves the deficiencies of the prior art.
[0005] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a high-precision multi-layer display screen circuit board, including a circuit board body, a cable mounting seat is installed on one side of the top surface of the cable mounting seat, and the middle part of the cable mounting seat is hollowed out, a through groove is opened in the middle of the top surface of the cable mounting seat, and a bevel is set on one side of the inner wall of the through groove, guide grooves are opened at both ends of the cable mounting seat, and buckles are installed on one side of the inner walls of the two guide grooves, a clamping rod matching the bevel is installed inside the through groove, and two limiting protrusions sliding with the guide grooves are installed at both ends of the clamping rod, wherein the two limiting protrusions are respectively clamped with two buckles, and protective plates are installed on the bottom surfaces of the two clamping rods.
[0006] Preferably, one side of the top surface of the circuit board body is provided with four mounting holes, and solder feet inserted into the mounting holes are installed at the four corners of the bottom surface of the cable mounting seat, and the four solder feet are fixedly connected to the circuit board body by solder. By using this scheme, it is convenient for the user to install the cable mounting seat on the circuit board body using reflow soldering equipment, and the four solder feet help to improve the stability of the connection between the cable mounting seat and the circuit board body.
[0007] Preferably, any of the above schemes is that a guide frame is provided on the side of the cable mounting seat away from the circuit board body, and the top surface of the guide frame is tilted obliquely upward. By using this scheme, it is convenient to guide the cable to be inserted into the cable mounting seat so that one end of the cable is aligned with the connecting contact on the circuit board body. The tilted structure on the guide frame facilitates the cable to smoothly enter the interior of the guide frame.
[0008] Preferably, any of the above schemes is that the width of the clamping rod is smaller than the width of the through groove, and a pulling soft film is installed on the top surface of the clamping rod. By using this scheme, it is convenient for the user to drive the clamping rod to provide a pulling position, and at the same time, the root position of the pulling soft film can be bent, so that the pulling soft film can crawl on the top surface of the clamping rod, thereby reducing space occupancy.
[0009] Preferably, two rounded corners are provided on both sides of the bottom surface of the protective plate, and the length of the protective plate is smaller than the length of the clamping rod. By using this scheme, the protective plate can smoothly transition with the cable to avoid scratches on the cable by the protective plate. The protective plate can be made of flexible material, which can deform to a certain extent when pressing the cable, thereby increasing the contact area with the cable and avoiding stress concentration, while providing a certain degree of protection for the cable.
[0010] The utility model has the following advantages:
[0011] 1. The high-precision multi-layer display screen circuit board is provided with a cable mounting seat, a through slot is opened on the top, an oblique angle is set on one side of the inner wall of the through slot, a clamping rod is located inside the through slot, and limiting protrusions are installed at both ends of the clamping rod, which are respectively engaged with two buckles. When the clamping rod is installed in place, one side of the position matches the oblique angle position inside the through slot, so that the protective plate can be pressed on the external cable. The stability of the cable installation is guaranteed by the dual limit of the cable mounting seat and the clamping rod, thereby effectively solving the problems existing in the prior art.
[0012] 2. The high-precision multi-layer display screen circuit board is provided with four solder feet, which penetrate four mounting holes, so that it is convenient to use solder to stably mount the cable mounting seat on one side of the top surface of the circuit board body. By providing a guide frame, the top surface is tilted upward, so that it is convenient for the user to insert the cable into the interior of the cable mounting seat along the guide frame, so as to accurately align the cable with the contacts on the circuit board body. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the structure of the circuit board body of the utility model;
[0015] Figure 3 It is a schematic diagram of the assembly structure of the cable installation seat and the clamping rod of the utility model;
[0016] Figure 4 It is a schematic diagram of the cross-section structure of the assembly of the cable installation seat and the clamping rod of the utility model;
[0017] Figure 5 This is a schematic diagram of the cable installation seat structure of the utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the clamping rod of the utility model;
[0019] Figure 7 It is a schematic diagram of the partial structure of the guide frame of the utility model.
[0020] In the figure: 1-circuit board body, 2-cable mounting seat, 3-cable, 5-guide frame, 6-guide groove, 7-pulling soft film, 8-mounting hole, 9-welding foot, 10-through groove, 11-pressing rod, 12-limiting protrusion, 13-protective plate, 14-buckle. DETAILED DESCRIPTION
[0021] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0022] like Figures 1 to 7 As shown, a high-precision multi-layer display screen circuit board includes a circuit board body 1, a cable mounting seat 2 is installed on one side of the top surface of the cable mounting seat 2, and the middle part thereof is hollowed out, a through groove 10 is opened in the middle of the top surface of the cable mounting seat 2, and an oblique angle is set on one side of the inner wall of the through groove 10, guide grooves 6 are opened at both ends of the cable mounting seat 2, and buckles 14 are installed on one side of the inner walls of the two guide grooves 6, a clamping rod 11 matched with the oblique angle is installed inside the through groove 10, and two limiting protrusions 12 sliding with the guide groove 6 are installed at both ends of the clamping rod 11, wherein the two limiting protrusions 12 are respectively clamped with the two buckles 14, and the bottom surfaces of the two clamping rods 11 are installed with protective plates 13.
[0023] Four mounting holes 8 are provided on one side of the top surface of the circuit board body 1, and solder feet 9 inserted into the mounting holes 8 are installed at the four corners of the bottom surface of the cable mounting seat 2. The four solder feet 9 are fixedly connected to the circuit board body 1 by soldering. As an optional technical solution of the utility model, this makes it convenient for users to use reflow soldering equipment to install the cable mounting seat 2 on the circuit board body 1. At the same time, the four solder feet 9 help to improve the stability of the connection between the cable mounting seat 2 and the circuit board body 1.
[0024] A guide frame 5 is provided on one side of the cable mounting seat 2 away from the circuit board body 1, and the top surface of the guide frame 5 is tilted obliquely upward. As an optional technical solution of the utility model, this facilitates the insertion of the cable into the cable mounting seat 2 to guide one end of the cable 3 and aligns with the connecting contact on the circuit board body 1. The tilting structure on the guide frame 5 facilitates the cable 3 to smoothly enter the interior of the guide frame 5.
[0025] The width of the clamping rod 11 is smaller than the width of the through slot 10, and a pulling soft film 7 is installed on the top surface of the clamping rod 11. As an optional technical solution of the utility model, this facilitates the user to drive the clamping rod 11 to provide a pulling position. At the same time, the root position of the pulling soft film 7 can be bent, so that the pulling soft film 7 can crawl on the top surface of the clamping rod 11, reducing space occupancy.
[0026] Two rounded corners are arranged on both sides of the bottom surface of the protective plate 13. The length of the protective plate 13 is less than the length of the clamping rod 11. As an optional technical solution of the utility model, this facilitates the smooth transition of the protective plate 13 with the cable 2 to avoid scratches on the cable 3 by the protective plate 13. The protective plate 13 can be made of a flexible material. When the cable 3 is clamped, it can deform to a certain extent, increase the contact area with the cable 3, avoid stress concentration, and provide a certain protection for the cable 3.
[0027] The following steps are required to use this high-precision multi-layer display circuit board:
[0028] 1) During installation, pass the cable 3 through the guide frame 5 and slowly insert it into the cable mounting seat 2;
[0029] 2) By pulling the soft film 7, the pressing rod 11 is driven to slide along the inside of the first guide groove 6;
[0030] 3) The pressing rod 11 cooperates with the bevel inside the through slot 10 so that the protective plate 13 presses the cable 3;
[0031] 4) The two limiting protrusions 12 are respectively engaged with the two buckles 14 to lock the position of the pressing rod 11.
[0032] In summary, when the user uses it, by setting the cable mounting seat 2, a through slot 10 is opened on the top, and one side of the inner wall of the through slot 10 is provided with an oblique angle, and the clamping rod 11 is located inside the through slot 10, and the two ends of the clamping rod 11 are provided with limited protrusions 12, which are respectively engaged with the two buckles 14. When the clamping rod 11 is installed in place, one side of the position matches the oblique angle position inside the through slot 10, so as to facilitate the protective plate 13 to clamp the external cable 3. Under the double limit of the tightening rod 11, the stability of the installation of the cable 3 is ensured, thereby effectively solving the problems existing in the prior art. Four solder feet 9 are provided, and the four solder feet 9 pass through the four mounting holes 8, so that it is convenient to use solder to stably install the cable mounting seat 2 on one side of the top surface of the circuit board body 1. By providing a guide frame 5, the top surface of which is tilted upward, so that it is convenient for the user to insert the cable into the interior of the cable mounting seat 2 along the guide frame 5, so as to accurately align the cable with the contacts on the circuit board body 1.
[0033] Although the 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. A high-precision multi-layer display screen circuit board, characterized in that: The invention comprises a circuit board body (1), a cable mounting seat (2) is installed on one side of the top surface of the cable mounting seat (2), and the middle part thereof is hollowed out, a through groove (10) is provided in the middle part of the top surface of the cable mounting seat (2), one side of the inner wall of the through groove (10) is provided with an oblique angle, guide grooves (6) are provided at both ends of the cable mounting seat (2), one side of the inner wall of the two guide grooves (6) is provided with a buckle (14), a clamping rod (11) matched with the oblique angle is installed inside the through groove (10), two limiting protrusions (12) sliding with the guide groove (6) are installed at both ends of the clamping rod (11), wherein the two limiting protrusions (12) are respectively engaged with the two buckles (14), and the bottom surfaces of the two clamping rods (11) are provided with a protective plate (13).
2. A high-precision multi-layer display screen circuit board according to claim 1, characterized in that: Four mounting holes (8) are provided on one side of the top surface of the circuit board body (1), and solder feet (9) inserted into the mounting holes (8) are installed at the four corners of the bottom surface of the cable mounting seat (2), and the four solder feet (9) are fixedly connected to the circuit board body (1) by soldering.
3. A high-precision multi-layer display screen circuit board according to claim 2, characterized in that: A guide frame (5) is provided on a side of the cable mounting seat (2) away from the circuit board body (1), and the top surface of the guide frame (5) is tilted obliquely upward.
4. A high-precision multi-layer display screen circuit board according to claim 3, characterized in that: The width of the pressing rod (11) is smaller than the width of the through slot (10), and a pulling soft film (7) is installed on the top surface of the pressing rod (11).
5. A high-precision multi-layer display screen circuit board according to claim 4, characterized in that: Two rounded corners are arranged on both sides of the bottom surface of the protection plate (13), and the length of the protection plate (13) is smaller than the length of the pressing rod (11).