Multi-layer PCB

Abstract

The utility model relates to the technical field of circuit boards, in particular to a multilayer PCB (printed circuit board), which comprises a circuit board body, connecting mechanisms are arranged on the front side and the rear side of the circuit board body, each connecting mechanism comprises a connecting plate, a sleeving cylinder, a positioning hole, a fixing plate, a supporting column, a pressing plate, a metal strip and a positioning block, and the connecting plates are fixedly connected with the middle parts of the front end and the rear end of the circuit board body respectively; in the installation process, the pressing plate in the second set of circuit board bodies is directly clamped in the sleeving cylinder in the first set of circuit board bodies, the second set of circuit board bodies are pressed downwards, at the moment, the pressing plate slides downwards on the inner side of the sleeving cylinder, and when the lower side of the positioning block makes contact with the upper edge of the sleeving cylinder, the positioning block can automatically slide inwards, so that the positioning block is prevented from sliding downwards. Meanwhile, the metal strips are extruded towards the inner side, when the positioning blocks move to the side faces of the positioning holes, the metal strips can automatically reset, the positioning blocks are clamped into the positioning holes, the two sets of PCBs are locked and fixed, and then the two sets of circuit board bodies are rapidly locked.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, and particularly relates to a multi-layer PCB board. Background Art

[0002] A PCB circuit board is a printed circuit board, also known as a printed wiring board, which is a provider for electrical connections of electronic components. With the increasing requirement for miniaturization of electronic products, in order to reduce the area of electronic products, the PCB has evolved from the initial single-sided board to the double-sided board, and then to the multi-layer board. Moreover, an electronic product often consists of multiple PCB boards connected together.

[0003] Among them, the published patent No. CN220823362U discloses an assembled multi-layer PCB board, which includes a mounting frame. A placement groove is formed on the side of the mounting frame. The inside of the placement groove is provided with a first PCB board, a second PCB board and a third PCB board. The inside of the mounting frame is provided with a clamping component capable of limiting the PCB board. A buffer component is arranged between the first PCB board and the second PCB board, and between the second PCB board and the third PCB board. The utility model can slow down the impact force between the PCB boards through the buffer component, and can slow down the pressure when the PCB boards are externally squeezed, so as to avoid damage caused by mutual impact of the PCB boards. The PCB board can be clamped and fixed through the clamping component. By rotating the rotary knob, the driving bevel gear can be driven to rotate. Under the meshing transmission of the bevel gears, the driven bevel gear can drive the threaded rod to rotate, so that the movable plate and the clamping plate can move up and down, and the clamping gap between the two clamping plates can be adjusted, thereby being able to clamp and fix PCB boards of different sizes.

[0004] This device can drive the driving bevel gear to rotate by rotating the rotary knob. Under the meshing transmission of the bevel gears, the driven bevel gear can drive the threaded rod to rotate, so that the movable plate and the clamping plate can move up and down, thereby realizing the clamping and fixing of the PCB board. Since the number of layers of the PCB board is relatively large, it is necessary to rotate multiple groups of rotary knobs in sequence to lock multiple groups of PCB boards, and the connection process is relatively cumbersome, and the installation efficiency is relatively low.

[0005] Therefore, it is very necessary to invent a multi-layer PCB board to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a multi-layer PCB board to solve the problem that in the prior art, due to the relatively large number of layers of the PCB board, it is necessary to rotate multiple groups of rotary knobs in sequence to lock multiple groups of PCB boards, the connection process is relatively cumbersome, and the installation efficiency is relatively low.

[0007] To achieve the above object, the present utility model provides the following technical solution: a multi-layer PCB board, including a circuit board body, connection mechanisms are provided on both the front and rear sides of the circuit board body, the connection mechanism includes a connection plate, a socket cylinder, a positioning hole, a fixing plate, a support column, a pressing plate, a metal strip, and a positioning block. The connection plates are fixedly connected to the middle parts of the front and rear ends of the circuit board body respectively. On the upper surface of the circuit board body, first connection blocks are fixedly connected at positions on both sides of the connection plate. A plugging groove is opened on the upper surface of the first connection block. On the lower surface of the circuit board body, second connection blocks are fixedly connected at positions on both sides of the connection plate. A plugging plate is fixedly connected to the lower surface of the second connection block.

[0008] By adopting the above technical solution, the first connection block and the second connection block are used to connect the circuits in two groups of PCB boards. Insert the plugging plate into the inside of the plugging groove to realize the connection of the circuits. Insert the support column and the pressing plate into the inside of the socket cylinder. At this time, the positioning block will slide into the inside of the positioning hole and be stuck inside the positioning hole to quickly fix the upper and lower two groups of PCB boards.

[0009] Optionally, the socket cylinder is fixedly connected to the upper surface of the connection plate, and a rubber cushion block is fixedly connected to the inner bottom wall of the socket cylinder.

[0010] By adopting the above technical solution, when the pressing plate slides to the bottommost end, it will squeeze the rubber cushion block at the bottom. The tension of the rubber cushion block will push the pressing plate upward, so that the positioning block is tightly stuck inside the positioning hole.

[0011] Optionally, there are two groups of positioning holes, and the two groups of positioning holes are symmetrically opened on the inner wall of the socket cylinder. Two symmetrical connection grooves are opened at the upper edge of the socket cylinder.

[0012] By adopting the above technical solution, the positioning block is stuck inside the positioning hole to lock and fix the fixing plate and the socket cylinder, and further lock and fix the two groups of PCB boards.

[0013] Optionally, a plurality of first plugging blocks are fixedly connected to the upper edge of the socket cylinder, and a plugging hole is opened on the upper surface of the first plugging block.

[0014] Optionally, the fixing plate is fixedly connected to the lower surface of the connection plate, the support column is fixedly connected to the lower surface of the fixing plate, and the pressing plate is fixedly connected to the lower end of the support column.

[0015] Optionally, there are two groups of metal strips, and the two groups of metal strips are respectively fixedly connected to the left and right sides of the upper surface of the pressing plate. The upper ends of the two groups of metal strips are fixedly connected to a pressing strip.

[0016] By adopting the above technical solution, the metal strip is elastic. Squeezing the two sets of pressing strips drives the metal strip to bend inward, and the metal strip will automatically reset after the pressing strips are released.

[0017] Optionally, the positioning block is fixedly connected to the outer surface of the metal strip. Two sets of V-shaped spring strips are fixedly connected to the lower surface of the fixing plate, and the ends of the spring strips away from the fixing plate abut against the side wall of the metal strip.

[0018] By adopting the above technical solution, the lower side of the positioning block is arc-shaped. During the process of sliding the pressing plate towards the bottom of the socket cylinder, when the lower side of the positioning block contacts the upper edge of the socket cylinder, the positioning block will automatically slide inward, and at the same time squeeze the metal strip inward. When the positioning block moves to the side of the positioning hole, the metal strip will automatically reset and snap the positioning block into the interior of the positioning hole. The spring strips are used to support the metal strip and further improve the elasticity of the metal strip.

[0019] Optionally, a plurality of second insertion blocks are fixedly connected to the lower surface of the fixing plate.

[0020] By adopting the above technical solution, the second insertion blocks are inserted into the insertion holes to position the fixing plate and the socket cylinder.

[0021] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0022] 1. By inserting the support column and the pressing plate into the socket cylinder and pressing the pressing plate downward, the positioning block will automatically slide into the positioning hole and be stuck in the positioning hole, thereby quickly fixing the upper and lower two sets of PCB boards, improving the connection speed of the two sets of PCB boards, and improving the installation efficiency of the PCB boards. It solves the problem that due to the large number of layers of the PCB board, it is necessary to sequentially rotate multiple rotary knobs to lock multiple sets of PCB boards, and the connection process is relatively cumbersome and the installation efficiency is low.

[0023] 2. During the connection process of the two sets of PCB boards, by inserting the insertion board into the insertion slot, the circuits in the two sets of PCB boards are connected, further improving the installation efficiency between multiple sets of PCB boards and effectively ensuring the stability of the connection between the circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 It is a schematic diagram of the circuit board body structure of the present utility model;

[0026] Figure 3 It is a schematic diagram of the connection block structure of the present utility model;

[0027] Figure 4 Structural schematic diagram of the connection mechanism of the present utility model;

[0028] Figure 5 The present utility model Figure 4 Schematic cross-sectional structure diagram.

[0029] Explanation of reference numerals:

[0030] 1. Circuit board body; 11. First connection block; 12. Insertion slot; 13. Second connection block; 14. Insertion plate; 2. Connection plate; 3. Socket cylinder; 31. First insertion block; 32. Insertion hole; 33. Connection groove; 34. Positioning hole; 35. Rubber cushion block; 4. Fixing plate; 41. Support column; 42. Pressure plate; 43. Metal strip; 44. Positioning block; 45. Pressure strip; 46. Spring strip; 47. Second insertion block. Specific implementation mode

[0031] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0032] The present utility model provides a multi-layer PCB board as shown in Figures 1 to 3 , which includes a circuit board body 1. Connection mechanisms are provided on both the front and rear sides of the circuit board body 1. The connection mechanism includes a connection plate 2, a socket cylinder 3, a positioning hole 34, a fixing plate 4, a support column 41, a pressure plate 42, a metal strip 43, and a positioning block 44. The connection plates 2 are fixedly connected to the middle parts of the front and rear ends of the circuit board body 1 respectively. On the upper surface of the circuit board body 1, first connection blocks 11 are fixedly connected to both sides of the connection plate 2. Insertion slots 12 are provided on the upper surfaces of the first connection blocks 11. On the lower surface of the circuit board body 1, second connection blocks 13 are fixedly connected to both sides of the connection plate 2. Insertion plates 14 are fixedly connected to the lower surfaces of the second connection blocks 13.

[0033] Among them, during the splicing process of two groups of PCB boards, the second group of circuit board bodies 1 are placed on the upper side of the first group of circuit board bodies 1. Then, the pressure plates 42 in the second group of circuit board bodies 1 are stuck inside the socket cylinders 3 in the first group of circuit board bodies 1. At this time, the insertion plates 14 in the second group of circuit board bodies 1 will be inserted into the insertion slots 12 in the first group of circuit board bodies 1. As the second group of circuit board bodies 1 are pressed downwards, at this time, the pressure plates 42 slide downwards inside the socket cylinders 3. When the lower side of the positioning block 44 contacts the upper edge of the socket cylinder 3, the positioning block 44 will automatically slide inwards, and at the same time, the metal strip 43 will be squeezed inwards. When the positioning block 44 moves to the side of the positioning hole 34, the metal strip 43 will automatically reset, and the positioning block 44 will be stuck into the positioning hole 34 to lock and fix the two groups of PCB boards.

[0034] Meanwhile, the plug-in board 14 in the second circuit board body 1 will slide downward inside the plug-in slot 12 in the first circuit board body 1. After the two groups of PCB boards are tightly locked and fixed, the plug-in board 14 will be completely inserted into the plug-in slot 12 to connect the circuits of the two groups of PCB boards.

[0035] Refer to Figure 4 and Figure 5 , the socket cylinder 3 is fixedly connected to the upper surface of the connecting plate 2. A rubber cushion block 35 is fixedly connected to the inner bottom wall of the socket cylinder 3. There are two groups of positioning holes 34, and the two groups of positioning holes 34 are symmetrically opened on the inner wall of the socket cylinder 3. Two symmetrical connecting grooves 33 are opened at the upper edge of the socket cylinder 3. A plurality of first plug-in blocks 31 are fixedly connected to the upper edge of the socket cylinder 3. A plug-in hole 32 is opened on the upper surface of the first plug-in block 31. A plurality of second plug-in blocks 47 are fixedly connected to the lower surface of the fixing plate 4. The fixing plate 4 is fixedly connected to the lower surface of the connecting plate 2. The support column 41 is fixedly connected to the lower surface of the fixing plate 4. The pressing plate 42 is fixedly connected to the lower end of the support column 41. There are two groups of metal strips 43, and the two groups of metal strips 43 are respectively fixedly connected to the left and right sides of the upper surface of the pressing plate 42. The upper ends of the two groups of metal strips 43 are fixedly connected to the pressing strip 45. The positioning block 44 is fixedly connected to the outer surface of the metal strip 43. Two V-shaped spring strips 46 are fixedly connected to the lower surface of the fixing plate 4. The ends of the spring strips 46 far away from the fixing plate 4 are abutted against the side walls of the metal strips 43.

[0036] Specifically, when the circuit board body 1 needs to be repaired and replaced, the pressing strips 45 on both sides are squeezed inward, thereby bending the metal strips 43 inward. At the same time, the spring strips 46 are squeezed, so that the positioning blocks 44 move inward, thereby separating the positioning blocks 44 from the inside of the positioning holes 34, and thus quickly separating the two groups of circuit board bodies 1.

[0037] The working principle of the present utility model: In order to improve the installation efficiency of the circuit board body 1, during the installation process, the pressing plate 42 in the second circuit board body 1 is directly stuck inside the socket cylinder 3 in the first circuit board body 1, and the second circuit board body 1 is pressed downward. At this time, the pressing plate 42 slides downward inside the socket cylinder 3. When the lower side of the positioning block 44 contacts the upper edge of the socket cylinder 3, the positioning block 44 will automatically slide inward, and at the same time, the metal strip 43 is squeezed inward. When the positioning block 44 moves to the side of the positioning hole 34, the metal strip 43 will automatically reset, and the positioning block 44 is snapped into the positioning hole 34 to tightly lock and fix the two groups of PCB boards, thereby quickly locking the two groups of circuit board bodies 1.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A multi-layer PCB board, comprising a circuit board body (1), characterized in that: The front and rear sides of the circuit board body (1) are both provided with connection mechanisms, the connection mechanisms comprising a connection plate (2), a sleeve (3), a positioning hole (34), a fixing plate (4), a support column (41), a pressure plate (42), a metal strip (43), and a positioning block (44); the connection plate (2) is fixedly connected to the middle of the front and rear ends of the circuit board body (1), respectively; positions on the left and right sides of the connection plate (2) on the upper surface of the circuit board body (1) are both fixedly connected with first connection blocks (11); the upper surface of the first connection block (11) is provided with a plug-in slot (12); positions on the left and right sides of the connection plate (2) on the lower surface of the circuit board body (1) are both fixedly connected with second connection blocks (13); the lower surface of the second connection block (13) is fixedly connected with a plug-in plate (14).

2. A multilayer PCB according to claim 1, characterized in that: The sleeve tube (3) is fixedly connected to the upper surface of the connecting plate (2), and a rubber pad (35) is fixedly connected to the inner bottom wall of the sleeve tube (3).

3. A multi-layer PCB board according to claim 1, characterized in that: Two groups of positioning holes (34) are provided, and the two groups of positioning holes (34) are symmetrically opened on the inner wall of the sleeve tube (3). Two groups of symmetrical connecting grooves (33) are opened at the upper edge of the sleeve tube (3).

4. The multi-layer PCB according to claim 1, characterized in that: A plurality of first plug-in blocks (31) are fixedly connected to the upper edge of the sleeve (3), and plug-in holes (32) are provided on the upper surfaces of the first plug-in blocks (31).

5. The multi-layer PCB according to claim 1, characterized in that: The fixing plate (4) is fixedly connected to the lower surface of the connecting plate (2), the supporting column (41) is fixedly connected to the lower surface of the fixing plate (4), and the pressing plate (42) is fixedly connected to the lower end of the supporting column (41).

6. A multi-layer PCB according to claim 5, characterized in that: Two groups of the metal strips (43) are provided, and the two groups of the metal strips (43) are fixedly connected to the left and right sides of the upper surface of the pressing plate (42), respectively, and the upper ends of the two groups of the metal strips (43) are fixedly connected to the pressing strip (45).

7. The multi-layer PCB according to claim 1, characterized in that: The positioning block (44) is fixedly connected to the outer surface of the metal strip (43); two groups of V-shaped spring strips (46) are fixedly connected to the lower surface of the fixing plate (4); one end of the spring strip (46) away from the fixing plate (4) abuts against the side wall of the metal strip (43).

8. The multi-layer PCB according to claim 1, characterized in that: A plurality of groups of second plug-in blocks (47) are fixedly connected to the lower surface of the fixing plate (4).

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