Multilayer PCB circuit board

Abstract

The utility model discloses a multilayer PCB circuit board, its structure includes surface plate, circuit mechanism, connecting plate, extension board, fixed plate, surface plate inlay fixed in the surface of circuit mechanism, extension board attach to connecting plate and fixed plate side face, circuit mechanism attach to connecting plate inner side. The right ends of the circuit boards are placed on the inner side of the fixing plate, the left ends of the circuit boards are clamped to the limiting structures on the inner side of the trapezoidal plate, then the plane plate is loosened, the multiple circuit boards are fixed through the multiple limiting structures, and the situation that the circuit boards are prone to extruding metal holes connected with the upper layer and the lower layer in the vibration process is avoided; the circuit board slides in from the inclined panel on the upper surface of the right side of the support plate, and the support plate is kept in a middle ejection state under the upward elastic force of the spring and the drawing force of resetting of the movable plate, so that the upper side and the lower side of the circuit board are supported and fixed, and the clamping position is prevented from easily generating a gap to loosen.

Description

Technical Field

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

[0002] PCB is a printed circuit board used for supporting electronic components and connecting electronic components. It has the advantages of small size, light weight, and easy installation. It is widely used in various electronic products. A multi-layer PCB circuit board is a circuit board stacked with multiple layers of thin plates. Each layer has its own circuit wiring, and the layers are connected by metallized holes to form a complete circuit with higher performance and more complex circuit structure.

[0003] However, when fixing the multi-layer thin plates, they are placed on a large card slot for overall fixation. Since the thin plates are insulating materials with a certain elastic bending force, each layer of the thin plates is not fixed separately during fixation. During the vibration process, the thin plates are prone to squeeze the metallized holes connecting the upper and lower layers, which can easily cause the metallized holes to shift and break. When the left and right sides of the fixed thin plates need to be engaged, the engaging slot needs to be slightly larger than the thin plates. The gap between the thin plates and the card slots is prone to looseness, resulting in weak supporting and fixing forces on the thin plates, which in turn causes the problem of the thin plates being easily bent under force. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention is implemented through the following technical solutions: a multi-layer PCB circuit board, whose structure includes a plane plate, a circuit mechanism, a connecting plate, an extension plate, and a fixed plate, wherein the plane plate is embedded in the surface of the circuit mechanism, the extension plate is attached to the sides of the connecting plate and the fixed plate, the circuit mechanism is attached to the inner side of the connecting plate, and the extension plate is made of rubber and has the characteristic of stretching movement.

[0005] As a further optimization of the present technical solution, the circuit mechanism is provided with a rubber plate, a metal hole, a trapezoidal plate, a circuit board, a pushing structure, and a limiting structure. The rubber plate is attached to the outer side of the trapezoidal plate, the circuit board is engaged with the inner side of the limiting structure, the limiting structure is installed on the inner side of the trapezoidal plate, the metal hole passes through the inside of the circuit board, the pushing structure is installed on the side of the trapezoidal plate, the rubber plate is attached to the inner side of the connecting plate, the flat plate is embedded in the upper end surface of the trapezoidal plate, a triangular groove in a sealed state is provided inside the rubber plate, which has the effect of deforming and compressing the rubber plate, and the upper and lower surfaces of the circuit board are circuit wiring, and the circuit wiring is connected through the metal hole.

[0006] As a further optimization of the present technical solution, the limiting structure is provided with a movable plate, a support block, a bracket plate, and a spring. The left and right sides of the bracket plate are embedded in the side faces of the movable plate, the support block is embedded in the left and right sides of the inside of the movable plate, the spring is installed on the inner side of the movable plate, the upper end of the spring is embedded in the middle position of the bracket plate, the movable plate is installed on the inner side of the trapezoidal plate, the movable plate is made of rubber and has the characteristics of stretching movement, and two support blocks are provided, which are symmetrically distributed inside the movable plate.

[0007] As a further optimization of the present technical solution, the bracket plate is provided with a rotating rod, an inclined panel, a rotating shaft, and a force block. The rotating rod is embedded in the force block, and the rotating rod is installed at the right end of the inclined panel. The inclined panel is embedded in the side of the rotating shaft, and the force block is embedded in the side of the movable plate. The inclined panel is provided with two, which are distributed on the left and right sides of the rotating shaft. When the circuit board is not yet engaged, the inclined panel is two hypotenuses in an isosceles triangle state, and its rotating shaft forms a 160-degree state at the top angle of the inclined panel.

[0008] As a further optimization of the present technical solution, the pushing structure is provided with a connecting rod, a force-bearing rod and a bearing rod. The left end of the force-bearing rod is embedded in the outside of the connecting rod, the right end of the force-bearing rod is installed in the middle of the bearing rod, the connecting rod is installed on the side of the trapezoidal plate, the bearing rod and the connecting rod are inclined at 15 degrees, and the bearing rod rotates around the connecting rod. Beneficial Effects

[0009] Compared with the prior art, the multi-layer PCB circuit board of the utility model has the following advantages:

[0010] In the utility model, the plane plate is manually moved, and then the trapezoidal plate is pressed toward the rubber plate, so that the right end of the circuit board is placed on the inner side of the fixed plate, and the left end of the circuit board is engaged with the position of the limiting structure on the inner side of the trapezoidal plate. Then the plane plate is loosened, and the trapezoidal plate is fixed and engaged with the circuit boards of each layer under the elastic force of the rubber plate. The multiple circuit boards are fixed separately by multiple limiting structures, thereby improving the stability of the circuit boards and preventing the circuit boards from easily extruding the metal holes connecting the upper and lower layers during vibration.

[0011] When the circuit board is engaged in the utility model, the left end of the circuit board presses the bracket plate on the limiting structure, so that the circuit board slides in from the inclined plate on the upper surface of the right side of the bracket plate. According to the principle of force action, under the upward elastic force of the spring and the tensile force of the movable plate to return to the original position, the rotating shaft position will generate an upward extrusion support force, so that the bracket plate maintains a middle ejected state, and then supports and fixes the upper and lower sides of the circuit board to prevent the engaging position from easily generating gaps and loosening.

[0012] When the trapezoidal plate is manually pushed outwards in the utility model, the connecting rod is driven to rotate counterclockwise, so that the bearing rod is squeezed and slid inside the connecting plate, and the trapezoidal plate connected by the connecting rod is driven to move outwards, thereby increasing the gap between the positions of the trapezoidal plates, providing sufficient space for the circuit board to enter the inside of the trapezoidal plate, and avoiding the multi-layer circuit board to be easily blocked by insufficient space when aligning with the limiting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 The utility model is a structural schematic diagram of a multi-layer PCB circuit board.

[0015] Figure 2 It is a side structural diagram of a circuit mechanism of the utility model.

[0016] Figure 3 The figure is a side structural diagram of a limiting structure of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of a bracket plate of the utility model.

[0018] Figure 5 The utility model is a schematic diagram of a planar structure of a propulsion structure.

[0019] In the figure: flat plate-1, circuit mechanism-2, connecting plate-3, extension plate-4, fixed plate-5, rubber plate-21, metal hole-22, trapezoidal plate-23, circuit board-24, pushing structure-25, limiting structure-26, movable plate-w1, supporting block-w2, bracket plate-w3, spring-w4, rotating rod-w31, inclined plate-w32, rotating shaft-w33, force block-w34, connecting rod-t1, force rod-t2, bearing rod-t3. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the preferred implementation scheme of the present invention is further described below in conjunction with specific implementation schemes and accompanying drawings. Example

[0021] See also Figure 1-Figure 5The utility model provides a multi-layer PCB circuit board, which structure includes a plane plate 1, a circuit mechanism 2, a connecting plate 3, an extension plate 4, and a fixing plate 5. The plane plate 1 is embedded in the surface of the circuit mechanism 2, the extension plate 4 is attached to the sides of the connecting plate 3 and the fixing plate 5, the circuit mechanism 2 is attached to the inner side of the connecting plate 3, and the extension plate 4 is made of rubber material and has the characteristic of stretching activity, so that the plane plate 1 is manually moved to stretch the circuit mechanism 2 and the connecting plate 3 to the extension plate 4, and the middle of the circuit mechanism 2 is opened.

[0022] The circuit mechanism 2 is provided with a rubber plate 21, a metal hole 22, a trapezoidal plate 23, a circuit board 24, a pushing structure 25, and a limiting structure 26. The rubber plate 21 is attached to the outer side of the trapezoidal plate 23, the circuit board 24 is engaged with the inner side of the limiting structure 26, the limiting structure 26 is installed on the inner side of the trapezoidal plate 23, the metal hole 22 runs through the inside of the circuit board 24, the pushing structure 25 is installed on the side of the trapezoidal plate 23, the rubber plate 21 is attached to the inner side of the connecting plate 3, the plane plate 1 is embedded in the upper end surface of the trapezoidal plate 23, and the rubber plate 21 is attached to the inner side of the connecting plate 3. A sealed triangular groove is provided inside the rubber plate 21, which has the effect of deforming and compressing the rubber plate 21. The upper and lower surfaces of the circuit board 24 are circuit wirings, and the circuit wirings are connected through the metal holes 22, so that the trapezoidal plate 23 is pushed toward the rubber plate 21 by the plane plate 1, so that the right end of the circuit board 24 is placed on the inner side of the fixed plate 5, and the left end of the circuit board 24 is engaged with the position of the limiting structure 26 on the inner side of the trapezoidal plate 23, and then the plane plate 1 is released, and the trapezoidal plate 23 is fixed and engaged with each layer of the circuit board 24 under the elastic force of the rubber plate 21.

[0023] The limiting structure 26 is provided with a movable plate w1, a support block w2, a bracket plate w3, and a spring w4. The left and right sides of the bracket plate w3 are embedded in the side faces of the movable plate w1, the support block w2 is embedded in the left and right sides of the inside of the movable plate w1, the spring w4 is installed on the inner side of the movable plate w1, and the upper end of the spring w4 is embedded in the middle position of the bracket plate w3. The movable plate w1 is installed on the inner side of the trapezoidal plate 23. The movable plate w1 is made of rubber and has the characteristic of stretching movement. Two support blocks w2 are provided, which are symmetrically distributed inside the movable plate w1, so that the left end of the circuit board 24 presses the bracket plate w3. When the circuit board 24 is engaged, it slides in from the upper surface of the right side of the bracket plate w3, driving the middle of the bracket plate w3 to press the spring w4, and then the left and right ends of the bracket plate w3 expand outward to a horizontal state, so that the bracket plate w3 maintains a state of being ejected in the middle, and then the upper and lower sides of the circuit board 24 are supported and fixed.

[0024] The bracket plate w3 is provided with a rotating rod w31, an inclined panel w32, a rotating shaft w33, and a force block w34. The rotating rod w31 is embedded in the force block w34. The rotating rod w31 is installed at the right end of the inclined panel w32. The inclined panel w32 is embedded in the side of the rotating shaft w33. The force block w34 is embedded in the side of the movable plate w1. The inclined panel w32 is provided with two, which are distributed on the left and right sides of the rotating shaft w33. The inclined panel w32 is in an isosceles triangle state when the circuit board 24 is not engaged. The rotating shaft w33 forms a 160-degree state at the top angle of the inclined panel w32, so that the circuit board 24 slides and squeezes on the inclined panel w32, and then the rotating shaft w33 presses the spring w4 at the lower end, and drives the force block w34 to squeeze the movable panel w1 outward. According to the principle of force action, under the upward elastic force of the spring w4 and the tensile force of the movable panel w1 to reset, the rotating shaft w33 will generate an upward squeezing support force to block and fix the circuit board 24, preventing the engaging position from easily generating gaps and loosening.

[0025] The pushing structure 25 is provided with a connecting rod t1, a force-bearing rod t2, and a bearing rod t3. The left end of the force-bearing rod t2 is embedded in the outer side of the connecting rod t1, and the right end of the force-bearing rod t2 is installed in the middle of the bearing rod t3. The connecting rod t1 is installed on the side of the trapezoidal plate 23. The bearing rod t3 and the connecting rod t1 are inclined at 15 degrees, and the bearing rod t3 rotates around the connecting rod t1. Therefore, when the trapezoidal plate 23 is pushed outward, the connecting rod t1 is driven to rotate counterclockwise, and then the bearing rod t3 rotates with the connection of the force-bearing rod t2, so that the bearing rod t3 is squeezed and slid on the inner side of the connecting plate 3. Therefore, the force-bearing rod t2 as the hypotenuse tends to be horizontal under rotation, which will drive the trapezoidal plate 23 connected by the connecting rod t1 to move outward, thereby increasing the gap at the position of the trapezoidal plate 23, so that sufficient space is provided when the circuit board 24 enters the inner side of the trapezoidal plate 23, and avoids the multi-layer circuit board 24 from being easily blocked due to insufficient space when aligning with the limiting structure 26.

[0026] Working principle: In the utility model, the flat plate 1 is manually moved to stretch the circuit mechanism 2 and the connecting plate 3 to the extension plate 4, and the middle of the circuit mechanism 2 is opened, and then the trapezoidal plate 23 is pressed toward the rubber plate 21, so that the right end of the circuit board 24 is placed on the inner side of the fixed plate 5, and the left end of the circuit board 24 is engaged with the position of the limiting structure 26 on the inner side of the trapezoidal plate 23, and then the flat plate 1 is released, and the trapezoidal plate 23 is fixed and engaged with each layer of the circuit board 24 under the elastic force of the rubber plate 21, and the multiple circuit boards 24 are fixed separately by multiple limiting structures 26, so as to improve the stability of the circuit board 24 and prevent the circuit board 24 from easily squeezing the metal holes 22 connecting the upper and lower layers during vibration.

[0027] When the circuit board 24 is engaged in the utility model, the left end of the circuit board 24 squeezes the bracket plate w3 on the limiting structure 26, so that the circuit board 24 slides in from the inclined panel w32 on the upper surface of the right side of the bracket plate w3, driving the middle of the bracket plate w3 to squeeze the spring w4, and then the force block w34 in the bracket plate w3 expands outward and tends to a horizontal state. According to the principle of force action, under the upward elastic force of the spring w4 and the tensile force of the movable plate w1 to reset, the position of the rotating shaft w33 will generate an upward squeezing support force, so that the bracket plate w3 maintains a state of being ejected in the middle, and then supports and fixes the upper and lower sides of the circuit board 24 to prevent the engaging position from easily generating gaps and loosening.

[0028] In the utility model, when the trapezoidal plate 23 is manually pushed outward, the connecting rod t1 is driven to rotate counterclockwise, and then the bearing rod t3 rotates along with it under the connection with the force-bearing rod t2, so that the bearing rod t3 is squeezed and slid on the inner side of the connecting plate 3, so that the force-bearing rod t2 as the hypotenuse tends to be horizontal under rotation, which will drive the trapezoidal plate 23 connected by the connecting rod t1 to move outward, thereby increasing the gap at the position of the trapezoidal plate 23, providing sufficient space for the circuit board 24 to enter the inner side of the trapezoidal plate 23, and avoiding the multi-layer circuit board 24 to be easily blocked due to insufficient space when aligning with the limiting structure 26.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms and various changes and improvements can be made. These changes and improvements all fall within the scope of the utility model to be protected. Therefore, the scope of protection of the utility model is defined by the attached claims and their equivalents, rather than the above description.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-layer PCB circuit board, comprising a flat plate (1), a circuit structure (2), a connecting plate (3), an extension plate (4), and a fixing plate (5), characterized in that: The flat plate (1) is embedded in the surface of the circuit mechanism (2), the extension plate (4) is attached to the side surfaces of the connecting plate (3) and the fixing plate (5), and the circuit mechanism (2) is attached to the inner side of the connecting plate (3).

2. A multi-layer PCB circuit board according to claim 1, characterized in that: The circuit mechanism (2) is provided with a rubber plate (21), a metal hole (22), a trapezoidal plate (23), a circuit board (24), a pushing structure (25), and a limiting structure (26); the rubber plate (21) is attached to the outside of the trapezoidal plate (23); the circuit board (24) is engaged with the inside of the limiting structure (26); the limiting structure (26) is installed on the inside of the trapezoidal plate (23); the metal hole (22) passes through the inside of the circuit board (24); the pushing structure (25) is installed on the side of the trapezoidal plate (23); the rubber plate (21) is attached to the inside of the connecting plate (3); and the plane plate (1) is embedded in the upper end surface of the trapezoidal plate (23).

3. A multi-layer PCB circuit board according to claim 2, characterized in that: The limiting structure (26) is provided with a movable plate (w1), a support block (w2), a bracket plate (w3), and a spring (w4); the left and right sides of the bracket plate (w3) are embedded in the side surfaces of the movable plate (w1); the support block (w2) is embedded in the left and right sides of the inside of the movable plate (w1); the spring (w4) is installed on the inner side of the movable plate (w1); the upper end of the spring (w4) is embedded in the middle position of the bracket plate (w3); and the movable plate (w1) is installed on the inner side of the trapezoidal plate (23).

4. A multi-layer PCB circuit board according to claim 3, characterized in that: The support plate (w3) is provided with a rotating rod (w31), an inclined panel (w32), a rotating shaft (w33), and a force-bearing block (w34); the rotating rod (w31) is embedded in the force-bearing block (w34); the rotating rod (w31) is installed on the right end of the inclined panel (w32); the inclined panel (w32) is embedded on the side of the rotating shaft (w33); and the force-bearing block (w34) is embedded on the side of the movable plate (w1).

5. A multi-layer PCB circuit board according to claim 2, characterized in that: The pushing structure (25) is provided with a connecting rod (t1), a force-bearing rod (t2), and a bearing rod (t3); the left end of the force-bearing rod (t2) is embedded in the outside of the connecting rod (t1); the right end of the force-bearing rod (t2) is installed in the middle of the bearing rod (t3); and the connecting rod (t1) is installed on the side of the trapezoidal plate (23).

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