Circuit board with multilayer structure

Abstract

The utility model discloses a circuit board with a multilayer structure, which comprises a circuit board and a fixed plate, a plurality of groups of adjusting rods are arranged in the fixed plate, the adjusting rods are arranged corresponding to the circuit board, adjusting blocks are arranged on the two groups of adjusting rods on two sides, two groups of symmetrically distributed connecting rods are arranged between the two adjacent groups of adjusting rods, and the two groups of connecting rods are connected with the circuit board. The two ends of each connecting rod are rotationally provided with first sliding blocks correspondingly, the connecting rods are slidably connected with the adjusting rods on the two sides through the first sliding blocks, the two symmetrically-distributed connecting rods are rotationally installed through second sliding blocks, and the second sliding blocks are slidably connected with the fixing plate. By arranging the fixing plate and the multiple sets of adjusting rods installed in the fixing plate, separation and fastening installation of the multiple sets of circuit boards are achieved, a hot-pressing fixing mode that the adjacent circuit boards cannot be separated is not adopted, and after electronic elements on the circuit boards go wrong, workers can conveniently disassemble the circuit boards of a multi-layer structure; and the overall rejection rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board with a multi-layer structure. Background Art

[0002] The manufacturing method of multi-layer circuit boards generally starts with making the inner layer graphics first, and then using the printing and etching method to make a single-sided or double-sided substrate, and incorporating it into the specified layer, and then heating, pressurizing and bonding it. As for the subsequent drilling, it is the same as the plated through hole method of the double-sided board. Multi-layer circuit boards have high assembly density, small size and light weight. Due to the high assembly density, the number of connections between components is reduced, thereby improving reliability.

[0003] The existing multi-layer circuit boards are formed by hot-pressing and bonding single-layer circuit boards to each other. If a single-layer circuit board or component is damaged during use, since the multi-layer circuit boards cannot be disassembled, the damage of a single component or circuit affects the normal use of the entire circuit board. In addition, the existing multi-layer circuit boards are hot-pressed and bonded to each other, resulting in poor heat dissipation performance during use of the circuit boards. When the circuit boards accumulate a lot of heat, the working efficiency of the circuit boards is seriously affected. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit board with a multi-layer structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board with a multi-layer structure, comprising a circuit board and a fixed plate, wherein a plurality of groups of adjusting rods are arranged in the fixed plate, wherein the adjusting rods are arranged corresponding to the circuit board, and the two groups of adjusting rods on both sides are provided with adjusting blocks, and two groups of symmetrically distributed connecting rods are arranged between the two adjacent groups of adjusting rods, and first sliders are rotatably installed at both ends of the connecting rods, and the connecting rods are slidably connected to the adjusting rods on both sides through the first slider, and the two groups of symmetrically distributed connecting rods are rotatably installed through a second slider, and the second slider is slidably connected to the fixed plate, and two groups of symmetrically distributed bidirectional screw rods are arranged in the fixed plate.

[0006] As a further preferred embodiment of the present technical solution, a sliding rod is provided under the adjusting rod, a sliding seat is provided above the circuit board, the sliding seat is slidably connected to the sliding rod, an elastic block is provided at the right end of the sliding rod, a mounting rod is provided in the sliding seat, two groups of symmetrically distributed elastic frames are provided on the mounting rod, and the elastic frames and the elastic blocks are arranged correspondingly.

[0007] As a further preferred embodiment of the present technical solution, the two groups of elastic frames are rotatably connected to the mounting rod, two groups of symmetrically distributed first torsion springs are sleeved on the mounting rod, a second torsion spring is sleeved on the mounting rod, the second torsion spring is located between the two groups of elastic frames, two ends of the second torsion spring are respectively fixedly connected to the two groups of elastic frames, and two ends of the first torsion spring are respectively fixedly connected to the mounting rod and the elastic frame.

[0008] As a further preferred embodiment of the present technical solution, the two ends of the bidirectional screw rod respectively pass through the two groups of adjusting blocks and are threadedly connected to the adjusting blocks, the two ends of the bidirectional screw rod respectively pass through the two ends of the fixed plate and are rotatably connected to the fixed plate through a damping bearing, a synchronous belt is provided in the fixed plate, and the left ends of the two groups of bidirectional screw rods are both sleeved with synchronous wheels, and the synchronous belts are respectively connected to the two groups of synchronous wheels for transmission.

[0009] As a further preferred embodiment of the present technical solution, a fixing frame is provided in the fixing plate, a fan is provided on the fixing frame, the fan is rotatably connected to the fixing frame via a rotating shaft, two sets of pulleys are provided in the fixing frame, one set of the pulleys is fixedly mounted to the fan via a rotating shaft, and the other set of the pulleys is rotatably connected to the fixing frame via a rotating shaft.

[0010] As a further preferred embodiment of the present technical solution, a belt is provided in the fixing frame, and the belt is respectively connected to the two sets of pulleys for transmission. A motor is provided on the fixing frame, and the pulley on the left side is connected to the output end of the motor through a rotating shaft.

[0011] The utility model provides a circuit board with a multi-layer structure, which has the following beneficial effects:

[0012] (1) The utility model realizes the separation and fastening installation of multiple groups of circuit boards by setting a fixing plate and multiple groups of adjustment rods installed in the fixing plate, and does not adopt the hot pressing fixing method that makes it impossible to separate adjacent circuit boards. When problems occur with electronic components on the circuit boards, it is convenient for workers to disassemble the circuit boards with multi-layer structures, thereby reducing the overall scrap rate. In addition, the method of fixing the multi-layer circuit boards with the adjustment rods is fast and convenient. By rotating the bidirectional screw rods, the bidirectional screw rods on both sides rotate synchronously under the action of the synchronous belt and the synchronous wheel, and the adjustment blocks on both sides drive the two groups of outer adjustment blocks under the limiting action of the fixing plate. The rods slide inward synchronously, and the connecting rods between every two sets of adjusting rods enable multiple sets of adjusting rods to synchronously approach the center of the fixed plate. The adjusting plates are closed, and the circuit boards fixedly installed by the sliding rods and the sliding seats under the adjusting plates move inward synchronously, thereby completing the detachable fixation between the multi-layer circuit boards. The reverse rotation of the bidirectional lead screws can enable multiple sets of adjusting rods to drive multiple sets of circuit boards to slide outward synchronously, thereby realizing the separation of the circuit boards and facilitating the inspection of damaged electronic components therein. Under the action of the elastic blocks and elastic frames on the sliding rods and the sliding seats, each set of sliding seats drives the circuit boards to be flexibly disassembled and fixed on the adjustable rods.

[0013] (2) The utility model realizes the blowing operation from the sides of multiple groups of circuit boards on the fixed plate through the set fixing frame and the fan. The air brought by the fan flows through the middle of the multi-layer circuit boards, driving the heat generated during the operation of the circuit boards. In addition, during the installation of the circuits on the circuit boards, the distance between the adjusting rods can be adjusted to reserve the distance between adjacent circuit boards, ensuring that the flow of air can take away the heat of the electronic components fixed on the circuit boards, achieving effective cooling, and avoiding the difficulty of air circulation passing through the electronic components inside the circuit boards due to the hot pressing installation of the circuit boards, which will cause a large amount of heat accumulation on the circuit boards and affect the normal working efficiency of the circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the fixing plate of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the adjustment rod of the utility model;

[0017] Figure 4 For the utility model Figure 3 -A magnified view of the structure;

[0018] Figure 5 This is a schematic diagram of the structure of the fan of the utility model;

[0019] In the figure: 1, circuit board; 2, fixed plate; 3, adjusting rod; 4, adjusting block; 5, connecting rod; 6, first slider; 7, second slider; 8, bidirectional screw; 9, synchronous wheel; 10, synchronous belt; 11, sliding rod; 12, sliding seat; 13, elastic block; 14, mounting rod; 15, elastic frame; 16, first torsion spring; 17, second torsion spring; 18, fixed frame; 19, fan; 20, pulley; 21, belt; 22, motor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a circuit board with a multi-layer structure includes a circuit board 1 and a fixed plate 2, wherein a plurality of groups of adjusting rods 3 are arranged in the fixed plate 2, and the adjusting rods 3 are arranged corresponding to the circuit board 1, and adjusting blocks 4 are arranged on the two groups of adjusting rods 3 on both sides, and two groups of symmetrically distributed connecting rods 5 are arranged between the two adjacent groups of adjusting rods 3, and first sliders 6 are rotatably installed at both ends of the connecting rods 5, and the connecting rods 5 are slidably connected with the adjusting rods 3 on both sides through the first sliders 6, and the two groups of symmetrically distributed connecting rods 5 are rotatably installed through second sliders 7, and the second slider 7 is slidably connected with the fixed plate 2, and two groups of symmetrically distributed bidirectional screw rods 8 are arranged in the fixed plate 2, and a sliding rod 11 is arranged below the adjusting rod 3, and a sliding seat 12 is arranged above the circuit board 1, and the sliding seat 12 is slidably connected with the sliding rod 11, and an elastic block 13 is arranged on the right end of the sliding rod 11, and a mounting rod 14 is arranged in the sliding seat 12, and a mounting rod 14 is arranged on the mounting rod 14 Two groups of symmetrically distributed elastic frames 15 are arranged corresponding to the elastic blocks 13. The two groups of elastic frames 15 are rotatably connected to the mounting rod 14. Two groups of symmetrically distributed first torsion springs 16 are sleeved on the mounting rod 14. The second torsion spring 17 is sleeved on the mounting rod 14. The second torsion spring 17 is located between the two groups of elastic frames 15. The two ends of the second torsion spring 17 are respectively fixedly connected to the two groups of elastic frames 15. The two ends of the first torsion spring 16 are respectively fixedly connected to the mounting rod 14 and the elastic frame 15. The two ends of the bidirectional screw rod 8 respectively penetrate the two groups of adjusting blocks 4 and are threadedly connected to the adjusting blocks 4. The two ends of the bidirectional screw rod 8 respectively penetrate the two ends of the fixed plate 2 and are rotatably connected to the fixed plate 2 through a damping bearing. A synchronous belt 10 is provided in the fixed plate 2. The left ends of the two groups of bidirectional screw rods 8 are sleeved with synchronous wheels 9, and the synchronous belts 10 are respectively connected to the two groups of synchronous wheels 9 for transmission.

[0022] By providing a fixing plate 2 and a plurality of adjusting rods 3 installed in the fixing plate 2, separation and fastening installation of a plurality of circuit boards 1 can be achieved, and a hot pressing fixing method that makes it impossible to separate adjacent circuit boards 1 is not adopted. When a problem occurs with the electronic components on the circuit board 1, it is convenient for the staff to disassemble the circuit board with a multi-layer structure, thereby reducing the overall scrap rate. In addition, the method of fixing the multi-layer circuit board 1 by the adjusting rods 3 is fast and convenient.

[0023] like Figure 2 and Figure 5 As shown, a fixing frame 18 is provided in the fixing plate 2, a fan 19 is provided on the fixing frame 18, the fan 19 is rotatably connected to the fixing frame 18 through a rotating shaft, two sets of pulleys 20 are provided in the fixing frame 18, one set of pulleys 20 is fixedly installed with the fan 19 through a rotating shaft, and one set of pulleys 20 is rotatably connected to the fixing frame 18 through a rotating shaft, a belt 21 is provided in the fixing frame 18, and the belt 21 is respectively connected to the two sets of pulleys 20 in transmission, a motor 22 is provided on the fixing frame 18, and the left pulley 20 is connected to the output end of the motor 22 through a rotating shaft.

[0024] The blowing operation is realized from the sides of multiple groups of circuit boards 1 on the fixing plate 2 by means of the provided fixing frame 18 and the fan 19. The air brought by the fan 19 flows through the middle of the multi-layer circuit board 1, driving the heat generated during the working process of the circuit board 1. In addition, during the installation of the circuit on the circuit board 1, the distance between the adjusting rods 3 can be adjusted to reserve the distance between adjacent circuit boards 1, thereby ensuring that the flow of air can take away the heat of the electronic components fixed on the circuit board 1, thereby achieving effective cooling, and avoiding the difficulty of air circulation passing through the internal electronic components of the circuit board 1 caused by the hot pressing installation of the circuit board 1, and the large amount of heat accumulation on the circuit board 1 affecting the normal working efficiency of the circuit board 1.

[0025] The utility model provides a circuit board with a multi-layer structure, and the specific working principle is as follows: by rotating the bidirectional screw rod 8, the bidirectional screw rods 8 on both sides rotate synchronously under the action of the synchronous belt 10 and the synchronous wheel 9, and the adjustment blocks 4 on both sides drive the two groups of outer adjustment rods 3 to slide inward synchronously under the limiting action of the fixed plate 2, and the multiple groups of adjustment rods 3 are synchronously approached to the center of the fixed plate 2 under the action of the connecting rod 5 between each two groups of adjustment rods 3. The adjustment plates are closed, and the circuit boards 1 fixedly installed by the sliding rods 11 and the sliding seats 12 under the adjustment plates are synchronously approached inward, completing the detachable fixation between the multi-layer circuit boards 1, and the reverse rotation of the bidirectional screw rods 8 can make the multiple groups of adjustment rods 3 drive the multiple groups of circuit boards 1 to slide outward synchronously, so as to realize the separation between the circuit boards 1, which is convenient for the inspection and repair of damaged electronic components therein, and the sliding rods 11 With the action of the elastic block 13 and the elastic frame 15 on the slide 12, each group of slides 12 drives the circuit boards 1 to be flexibly disassembled and fixed on the adjustable rod 3. The blowing operation from the sides of multiple groups of circuit boards 1 on the fixed plate 2 is realized through the set fixing frame 18 and the fan 19. The air brought by the fan 19 flows through the middle of the multi-layer circuit board 1, driving the heat generated during the working process of the circuit board 1, and during the installation of the circuit on the circuit board 1, the distance between the adjusting rods 3 can be adjusted to reserve the distance between adjacent circuit boards 1, ensuring that the flow of air can take away the heat of the electronic components fixed on the circuit board 1, achieving effective cooling, and avoiding the difficulty of air circulation through the internal electronic components of the circuit board 1 caused by the hot pressing installation of the circuit board 1, and the large amount of heat accumulation on the circuit board 1 affects the normal working efficiency of the circuit board 1.

[0026] 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. A circuit board with a multi-layer structure, comprising a circuit board (1) and a fixing board (2), characterized in that: The fixing plate (2) is provided with a plurality of groups of adjusting rods (3), the adjusting rods (3) being arranged corresponding to the circuit board (1), the two groups of adjusting rods (3) on both sides being provided with adjusting blocks (4), two groups of symmetrically distributed connecting rods (5) being provided between two adjacent groups of adjusting rods (3), first sliders (6) being rotatably mounted at both ends of the connecting rods (5), the connecting rods (5) being slidably connected to the adjusting rods (3) on both sides via the first sliders (6), the two groups of symmetrically distributed connecting rods (5) being rotatably mounted via second sliders (7), the second sliders (7) being slidably connected to the fixing plate (2), and two groups of symmetrically distributed bidirectional screw rods (8) being provided in the fixing plate (2).

2. A circuit board with a multi-layer structure according to claim 1, characterized in that: A slide bar (11) is provided below the adjusting rod (3), a slide seat (12) is provided above the circuit board (1), the slide seat (12) is slidably connected to the slide bar (11), an elastic block (13) is provided at the right end of the slide bar (11), a mounting rod (14) is provided inside the slide seat (12), two groups of symmetrically distributed elastic frames (15) are provided on the mounting rod (14), and the elastic frames (15) are arranged correspondingly to the elastic blocks (13).

3. A circuit board with a multi-layer structure according to claim 2, characterized in that: The two groups of elastic frames (15) are rotatably connected to the mounting rod (14); two groups of symmetrically distributed first torsion springs (16) are sleeved on the mounting rod (14); a second torsion spring (17) is sleeved on the mounting rod (14); the second torsion spring (17) is located between the two groups of elastic frames (15); two ends of the second torsion spring (17) are respectively fixedly connected to the two groups of elastic frames (15); and two ends of the first torsion spring (16) are respectively fixedly connected to the mounting rod (14) and the elastic frame (15).

4. The circuit board with a multi-layer structure according to claim 1, characterized in that: The two ends of the bidirectional screw rod (8) respectively penetrate the two groups of adjustment blocks (4) and are threadedly connected to the adjustment blocks (4); the two ends of the bidirectional screw rod (8) respectively penetrate the two ends of the fixed plate (2) and are rotationally connected to the fixed plate (2) through a damping bearing; a synchronous belt (10) is provided inside the fixed plate (2); the left ends of the two groups of bidirectional screw rods (8) are both sleeved with synchronous wheels (9); and the synchronous belt (10) is respectively transmission-connected to the two groups of synchronous wheels (9).

5. The circuit board with a multi-layer structure according to claim 1, characterized in that: A fixing frame (18) is arranged inside the fixing plate (2), a fan (19) is arranged on the fixing frame (18), the fan (19) is rotatably connected to the fixing frame (18) via a rotating shaft, two groups of pulleys (20) are arranged inside the fixing frame (18), one group of the pulleys (20) is fixedly mounted on the fan (19) via the rotating shaft, and the other group of the pulleys (20) is rotatably connected to the fixing frame (18) via the rotating shaft.

6. A circuit board with a multi-layer structure according to claim 5, characterized in that: A belt (21) is arranged inside the fixing frame (18), and the belt (21) is respectively connected to two groups of pulleys (20) for transmission. A motor (22) is arranged on the fixing frame (18), and the pulley (20) on the left side is connected to the output end of the motor (22) through a rotating shaft.

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