Double-sided crimping blind hole printed circuit board

Abstract

The utility model discloses a double-sided crimped blind hole printed circuit board. The utility model relates to the technical field of circuit boards, including a circuit board, a tough plate is arranged below the circuit board, fixing plates are fixedly arranged on both sides of the tough plate, arc-shaped plug rods are fixedly arranged on the lower end faces of the two fixing plates, a mounting groove is arranged inside the tough plate, the circuit board is inserted into the mounting groove, four end feet inside the mounting groove are arranged with rubber blocks A located below the circuit board, a telescopic sleeve rod is arranged on the lower end face of the rubber block A, a spring A is sleeved on the outside of the telescopic sleeve rod, a rubber block B is fixedly arranged on the lower end face of the telescopic sleeve rod, arc-shaped slots are arranged on both sides of the inside of the circuit board, the two arc-shaped plug rods are inserted into the two arc-shaped slots, and elastic fixing sheets are arranged on both sides of the inside of the arc-shaped slot. The utility model has the effect of preventing the circuit board from breaking through the tough plate.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a double-sided crimped blind hole printed circuit board. Background Art

[0002] Traditional PCB boards can only be plugged in on one side, and the number of connectors on the same area of ​​the board is small. Multiple PCB boards are required to achieve higher data transmission, which is costly and thick, and does not meet the size requirements of the terminal. By implementing the process of double-sided plug-in on the same PCB board, the number of connectors can be greatly increased, saving costs while improving the signal transmission capability of the product and achieving a higher level of integration.

[0003] For example, patent number CN202211516944.5 discloses a double-sided crimped blind hole printed circuit board and its manufacturing method, the structure of which includes drilling corresponding daughter board through holes on a plurality of daughter boards, electroplating at the daughter board through holes, and then etching to obtain daughter boards with holes, drilling through holes corresponding to the daughter board through holes on the prepreg to obtain an outer prepreg and an inner prepreg, attaching the outer prepreg to the crimping surface of the daughter board with holes, drilling, electroplating, and etching on the motherboard, and then drilling the copper foil at the position corresponding to the daughter board through hole, and then The surface is treated to obtain a double-sided press-fit blind hole printed circuit board. The utility model obtains an outer semi-preg sheet and an inner semi-preg sheet by drilling through holes corresponding to the through holes of the daughter board on the semi-preg sheet. When the daughter boards with holes are stacked and pressed together into a mother board in sequence, the through holes of the outer semi-preg sheet on the press-fit surface and the inner semi-preg sheet between the daughter boards with holes are connected to the through holes of the daughter board, and the blind holes in the traditional process are changed into through holes. There is no problem of blind holes hiding potions and contaminating the blind holes, which improves the electrical performance and reliability of the printed circuit board and improves the product qualification rate.

[0004] The circuit boards in this patent are mostly brittle and prone to cracks, which can lead to breakage of the circuit boards. Circuit boards used in a vibrating or bumpy environment are more likely to crack and have lower impact resistance. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a double-sided crimped blind hole printed circuit board, which solves the problems that most existing circuit boards are relatively brittle and prone to cracks, which leads to the breakage of the circuit boards, and circuit boards used in a vibrating or bumpy environment are more likely to crack and have low impact resistance.

[0006] To achieve the above purpose, the utility model is implemented through the following technical scheme: a double-sided crimped blind hole printed circuit board, including a circuit board, a tough plate is arranged at the bottom of the circuit board, fixing plates are fixedly arranged on both sides of the tough plate, arc-shaped plug rods are fixedly arranged on the lower end faces of the two fixing plates, a mounting groove is arranged inside the tough plate, the circuit board is inserted into the mounting groove, the four end feet inside the mounting groove are provided with a rubber block A located below the circuit board, a telescopic sleeve rod is arranged on the lower end face of the rubber block A, a spring A is sleeved on the outside of the telescopic sleeve rod, a rubber block B is fixedly arranged on the lower end face of the telescopic sleeve rod, arc-shaped slots are arranged on both sides inside the circuit board, the two arc-shaped plug rods are inserted into the two arc-shaped slots, and elastic fixing sheets are arranged on both sides inside the arc-shaped slot.

[0007] Preferably, a spring B is provided on one side of the two elastic fixing sheets.

[0008] Preferably, a moisture-proof layer is provided below the circuit board, and the moisture-proof layer is a triple-proof paint film.

[0009] Preferably, the lower end surface of the tough plate is provided with a plurality of evenly arranged heat dissipation holes.

[0010] Preferably, a plurality of evenly arranged arc grooves are formed on the lower end surface of the moisture-proof layer, and a ball is disposed on the upper end surface of the rubber block A, and the ball is inserted into the arc groove.

[0011] Preferably, electronic components are arranged on the upper end surface of the circuit board, and the surface of the circuit board is coated with oil-proof paint.

[0012] Preferably, an antistatic plate is provided on the inner wall of the tough plate, and a plurality of evenly arranged heat dissipation openings are provided on the surface of the antistatic plate.

[0013] Beneficial Effects

[0014] The utility model provides a circuit board that is resistant to fracture. Compared with the prior art, it has the following beneficial effects:

[0015] 1. A flexible board is installed on the outside of the circuit board, and the circuit board is clamped in the installation groove inside the flexible board. At the same time, the arc-shaped plug rods on the lower end surfaces of the fixing plates on both sides of the flexible board are inserted into the arc-shaped slots inside the circuit board for fixation. When the arc-shaped plug rod is inserted again, the elastic fixing sheets on both sides inside are squeezed to one side due to the elastic effect of extrusion. When the arc-shaped plug rod is fully inserted into the arc-shaped slot, the elastic fixing sheet contacts the outer wall of the arc-shaped plug rod to strengthen the fixation under the elastic effect of the elastic fixing sheet.

[0016] 2. The rubber block A located below the circuit board inside the tough board plays a buffering role when vibration occurs. The telescopic sleeve rod at its lower end surface will also move up and down when vibration occurs. At the same time, the spring B sleeved on the outside will also have a compressed movement, which plays a buffering role. The rubber block B at its lower end surface will also play a buffering role, protecting the circuit board from breakage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the utility model;

[0019] Figure 3 It is a partial enlarged structural schematic diagram of the cross section A of the connection of the tough plate of the utility model;

[0020] Figure 4 It is a schematic diagram of the partially enlarged structure of the cross section B of the tough plate connection of the utility model.

[0021] In the figure: 1. Circuit board; 2. Tough board; 3. Fixed board; 4. Moisture-proof layer; 5. Heat dissipation hole; 6. Mounting slot; 7. Arc slot; 8. Ball bearing; 9. Rubber block A; 10. Spring A; 11. Telescopic sleeve rod; 12. Rubber block B; 13. Arc plug rod; 14. Arc slot; 15. Elastic fixing plate; 16. Spring B. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4The utility model provides a technical solution: a double-sided crimped blind hole printed circuit board, comprising a circuit board 1, a tough plate 2 is arranged below the circuit board 1, fixing plates 3 are fixedly arranged on both sides of the tough plate 2, arc-shaped plug rods 13 are fixedly arranged on the lower end surfaces of the two fixing plates 3, a mounting groove 6 is arranged inside the tough plate 2, the circuit board 1 is inserted into the mounting groove 6, the four end feet inside the mounting groove 6 are provided with rubber blocks A9 located below the circuit board 1, one side of two elastic fixing sheets 15 are provided with springs B16, a moisture-proof layer 4 is arranged below the circuit board 1, and the moisture-proof layer 4 is a three-proof paint film, the tough plate 2 is installed outside the circuit board 1, the circuit board 1 is clamped in the mounting groove 6 inside the tough plate 2, and at the same time, the arc-shaped plug rods 13 on the lower end surfaces of the fixing plates 3 on both sides of the tough plate 2 are inserted into the arc-shaped slots 14 inside the circuit board 1 for fixing;

[0024] The lower end surface of the rubber block A9 is provided with a telescopic sleeve rod 11, and the outer portion of the telescopic sleeve rod 11 is sleeved with a spring A10, and the lower end surface of the telescopic sleeve rod 11 is fixedly provided with a rubber block B12, arc-shaped slots 14 are provided on both sides of the inside of the circuit board 1, and two arc-shaped insert rods 13 are inserted into the two arc-shaped slots 14, and elastic fixing sheets 15 are provided on both sides of the inside of the arc-shaped slots 14, and the lower end surface of the tough board 2 is provided with a plurality of evenly arranged heat dissipation holes 5, and when the arc-shaped insert rod 13 is fully inserted into the arc-shaped slot 14, the elastic fixing sheets 15 are in contact with the outer wall of the arc-shaped insert rod 13 to strengthen the fixation under the elastic action of the elastic fixing sheets 15;

[0025] The lower end face of the moisture-proof layer 4 is provided with a plurality of evenly arranged arc grooves 7, the upper end face of the rubber block A9 is provided with a ball 8, and the ball 8 is stuck in the arc groove 7, the upper end face of the circuit board 1 is provided with electronic components, the surface of the circuit board 1 is coated with oil-proof paint, the inner wall of the tough plate 2 is provided with an anti-static plate, and the surface of the anti-static plate is provided with a plurality of evenly arranged heat dissipation ports, the rubber block A9 located below the circuit board 1 inside the tough plate 2 has a buffering effect when vibration occurs, and the telescopic sleeve rod 11 on its lower end face will also have an up and down fluctuation effect when vibration occurs, and at the same time, the spring B16 sleeved on the outside will also have a compression movement, which has a buffering effect, and the rubber block B12 on its lower end face will also have a buffering effect, which protects the circuit board 1 from breakage.

[0026] During operation, the circuit board 1 is firstly connected to the mounting groove 6 inside the flexible plate 2 by installing the flexible plate 2 on the outside of the circuit board 1. At the same time, the arc-shaped rods 13 on the lower end faces of the fixing plates 3 on both sides of the flexible plate 2 are inserted into the arc-shaped slots 14 inside the circuit board 1 for fixing. When inserting again, the elastic fixing sheets 15 on both sides inside thereof are squeezed to one side due to the elastic effect of extrusion. When the arc-shaped rod 13 is fully inserted into the arc-shaped slots 14, the elastic fixing sheets 15 contact the outer wall of the arc-shaped rod 13 to strengthen the fixation. The rubber block A9 located below the circuit board 1 inside the flexible plate 2 has a buffering effect when vibration occurs. The telescopic sleeve rod 11 on its lower end face will also have an up and down fluctuation effect when vibration occurs. At the same time, the spring B16 sleeved on the outside will also have a compressing movement to have a buffering effect. The rubber block B12 on its lower end face will also have a buffering effect, which protects the circuit board 1 from breaking.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A double-sided crimped blind hole printed circuit board, comprising a circuit board (1), characterized in that: A flexible plate (2) is arranged below the circuit board (1), and fixing plates (3) are fixedly arranged on both sides of the flexible plate (2), and arc-shaped plug rods (13) are fixedly arranged on the lower end surfaces of the two fixing plates (3). A mounting groove (6) is arranged inside the flexible plate (2), and the circuit board (1) is inserted into the mounting groove (6). The four end feet inside the mounting groove (6) are provided with rubber blocks A (9) located below the circuit board (1), and a telescopic sleeve rod (11) is arranged on the lower end surface of the rubber block A (9). A spring A (10) is sleeved on the outside of the telescopic sleeve rod (11), and a rubber block B (12) is fixedly arranged on the lower end surface of the telescopic sleeve rod (11). Arc-shaped slots (14) are arranged on both sides inside the circuit board (1), and the two arc-shaped plug rods (13) are inserted into the two arc-shaped slots (14), and elastic fixing sheets (15) are arranged on both sides inside the arc-shaped slots (14).

2. A double-sided crimped blind hole printed circuit board according to claim 1, characterized in that: A spring B (16) is provided on one side of the two elastic fixing sheets (15).

3. A double-sided crimped blind hole printed circuit board according to claim 1, characterized in that: A moisture-proof layer (4) is provided below the circuit board (1), and the moisture-proof layer (4) is a triple-proof paint film.

4. A double-sided crimped blind hole printed circuit board according to claim 1, characterized in that: The lower end surface of the tough plate (2) is provided with a plurality of evenly arranged heat dissipation holes (5).

5. A double-sided crimped blind hole printed circuit board according to claim 3, characterized in that: The lower end surface of the moisture-proof layer (4) is provided with a plurality of evenly arranged arc grooves (7), and the upper end surface of the rubber block A (9) is provided with a ball (8), and the ball (8) is inserted into the arc groove (7).

6. A double-sided crimped blind hole printed circuit board according to claim 1, characterized in that: The upper end surface of the circuit board (1) is provided with electronic components, and the surface of the circuit board (1) is coated with oil-proof paint.

7. A double-sided crimped blind hole printed circuit board according to claim 1, characterized in that: The inner wall of the tough plate (2) is provided with an antistatic plate, and the surface of the antistatic plate is provided with a plurality of evenly arranged heat dissipation openings.

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