Multilayer circuit board with good insulativity

Abstract

The utility model provides a multilayer circuit board with good insulativity, which relates to the technical field of circuit boards and comprises a conductive hole, two ends of the conductive hole are sleeved with protective sleeves made of insulating materials, and one end of the conductive hole is attached with a wiring sheet engraved with a circuit diagram. The multi-layer circuit board has the advantages that the protective boss made of the insulating material is arranged on one side, where the electronic element is mounted, of the wiring sheet of the multi-layer circuit board, the electronic element mounted on the multi-layer circuit board is supported by the protective boss, and an insulating isolation supporting layer is formed between the multi-layer circuit board and the electronic element; meanwhile, an insulating fastening ring made of an insulating elastic material is arranged in the protective boss and is matched with the protective boss to clamp and fasten the pins of the electronic component, so that the mounting stability of the electronic component is enhanced, the electrical insulating property of the multilayer circuit board is improved, and the insulating property of the multilayer circuit board can be effectively improved; and the use safety of the multilayer circuit board is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a multilayer circuit board with good insulation. Background Technology

[0002] As electronic products move towards miniaturization and high speed, circuit boards are also evolving from single-sided and double-sided circuit boards to multi-layer circuit boards. Multi-layer circuit boards refer to circuit boards with multiple conductive lines, which have a larger wiring area and higher interconnection density, and are therefore widely used.

[0003] However, existing multilayer circuit boards are usually directly bonded to electronic components during use, resulting in weak insulation and protection for the electronic components and low safety in the use of the circuit boards. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a multilayer circuit board with good insulation to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a multilayer circuit board with good insulation, including an insulating substrate made of high-quality insulating material. The insulating substrate has conductive holes with conductive metal supports inside. Protective sleeves made of insulating material are fitted to both ends of the conductive holes. A trace for marking circuit diagrams is attached to one end of the conductive hole. A filler insulating sheet fitted around the circumference of the protective sleeve is provided between the trace and the insulating substrate. There are two traces distributed on both sides of the insulating substrate. On one side, a protective boss made of insulating material is fixedly installed at one end of the trace. An insulating fastening ring for clamping the conductive hole is fixedly installed inside the protective boss. On the other side, an insulating base serving as a support is fixedly installed at one end of the trace. An elastic sleeve for sealing the conductive hole is fixedly installed inside the insulating base.

[0006] Preferably, in any of the above embodiments, the insulating substrate has a through hole for accommodating a conductive hole, and the two ends of the conductive hole are provided with edge platforms that are attached to the insulating substrate. The conductive hole conducts electricity through the edge platforms and the trace piece.

[0007] The above technical solution uses an insulating substrate as the reference layer of a multilayer circuit board. Trace plates are covered on both sides of the insulating substrate as circuit layers to enable circuit connectivity in the multilayer circuit board. Conductive holes penetrating the insulating substrate are provided to connect the trace plates on both sides of the insulating substrate, so that the trace plates on both sides of the insulating substrate can be connected through the conductive holes, thus ensuring the integrity of the multilayer circuit board.

[0008] Preferably, in any of the above embodiments, the protective sleeve is fitted around the circumference of the edge platform, the protective sleeve is located between the edge platform and the insulating substrate, and the edge platform and the protective sleeve are located between the trace piece and the insulating substrate.

[0009] The above technical solution involves using a protective sleeve to cover and insulate the conductive hole extending from the insulating substrate, ensuring that the conductive hole can only conduct electricity in the part that is disconnected from the wiring piece, and that the part of the conductive hole extending from the insulating substrate will not conduct electricity, thus guaranteeing the single direction of conduction and the safety of the insulation protection.

[0010] Preferably, in any of the above embodiments, the wiring sheet has an internal connection hole with the same diameter as the conductive hole, and the insulating sheet has an internal fastening hole to support the protective sleeve.

[0011] The above technical solution allows the trace to be connected to the pins of external electronic components through power-on holes, enabling the external electronic components to operate by connecting to the trace through the power-on holes. The insulating sheet provides insulation protection for the side of the trace close to the insulating substrate, enhancing the insulation capability inside the multilayer circuit board.

[0012] Preferably, the protective boss has a semi-circular connecting platform for supporting electronic components at the end away from the wiring piece, the insulating base has a fixing hole for fixing the elastic sleeve at the end away from the wiring piece, and the protective boss and the insulating base have a slot in the middle that communicates with the power connection hole.

[0013] The above technical solution involves setting a protective boss to form an insulating pad at one end of the multilayer circuit board where electronic components are connected, thus isolating the surfaces of the electronic components and the traces. This ensures that the connection between the electronic components and the traces is only the pin portion of the electronic components, preventing electrical connections between the traces and other parts of the electronic components from affecting safety.

[0014] Preferably, in any of the above embodiments, the insulating fastening ring includes an elastic bending strip made of elastic insulating material and a clamping ring for fastening the pins of electronic components. The elastic bending strip is fixedly installed inside the semi-circular connecting platform, and a clamping ring that is movably connected to the protective boss is fixedly installed at one end of the elastic bending strip.

[0015] The above technical solution is adopted as follows: the size of the clamping ring is the same as that of the semi-circular connecting platform, and the thickness of the semi-circular connecting platform is equal to half the thickness of the protective boss. The semi-circular connecting platform is used to fix the elastic bending strip, and the elasticity of the elastic bending strip itself pulls the fastening ring, so that the fastening ring clamps and fastens the pins of the external electronic components, thereby enhancing the stability of the connection between the external electronic components and the multilayer circuit board.

[0016] Preferably, in any of the above embodiments, the elastic sleeve includes an elastic strip made of highly elastic rubber material and an end cap that seals the conductive hole. The elastic strip is fixedly installed inside the insulating base, and a deformable end cap is fixedly installed at one end of the elastic strip.

[0017] The above technical solution involves the lead of an external electronic component penetrating the multilayer circuit board and entering the interior of the end cover. The elastic strip and the deformation of the end cover itself allow it to deform with the lead of the electronic component, ensuring that the end cover always covers the lead. The end cover encloses the lead of the electronic component inside the multilayer circuit board, preventing the lead from protruding from the multilayer circuit board and connecting with other circuits, thus affecting the circuit stability of the multilayer circuit board and ensuring the stability of the insulation of the multilayer circuit board.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. Protective bosses made of insulating material are installed on one side of the trace pads of the multilayer circuit board where electronic components are mounted. These protective bosses support the electronic components mounted on the multilayer circuit board, forming an insulating isolation support layer between the multilayer circuit board and the electronic components. At the same time, insulating fastening rings made of insulating elastic material are installed inside the protective bosses to clamp and secure the pins of the electronic components. This enhances the stability of the electronic components during installation and improves the insulation between the components and the multilayer circuit board, effectively improving the insulation performance of the multilayer circuit board and enhancing its safety during use.

[0020] 2. An elastic sleeve is installed on one side of the fixed end face of the multilayer circuit board to seal the power connection part of the multilayer circuit board. The elastic sleeve, made of insulating material, can seal and isolate the pins of the installed electronic components by utilizing its own deformation capability, so as to prevent the multilayer circuit board from being connected to the external circuit and ensure the independence and safety of the multilayer circuit board.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3This is a cross-sectional structural diagram according to an embodiment of the present utility model;

[0026] Figure 4 According to the embodiments of this utility model Figure 3 Enlarged structural diagram at point A;

[0027] Among them: 1-Insulating substrate, 2-Conductive hole, 3-Protective sleeve, 4-Wire routing piece, 5-Filling insulating sheet, 6-Protective boss, 7-Insulating fastening ring, 71-Elastic bending strip, 72-Clamping ring, 8-Insulating base, 9-Elastic sleeve, 91-Elastic rubber strip, 92-End cap, 10-Power connection hole, 11-Semi-circular connecting platform. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown, an embodiment of the present invention provides a multilayer circuit board with good insulation, comprising an insulating substrate 1 made of high-quality insulating material, a conductive hole 2 with a conductive metal support inside the insulating substrate 1, a protective sleeve 3 made of insulating material sleeved at both ends of the conductive hole 2, a trace 4 for marking circuit diagrams attached to one end of the conductive hole 2, a filling insulating sheet 5 fitted around the circumference of the protective sleeve 3 between the trace 4 and the insulating substrate 1, two trace 4s distributed on both sides of the insulating substrate 1, a protective boss 6 made of insulating material fixedly installed at one end of one trace 4, an insulating fastening ring 7 for clamping the conductive hole 2 fixedly installed inside the protective boss 6, and an insulating base 8 as a support base fixedly installed at one end of the other trace 4, an elastic sleeve 9 for sealing the conductive hole 2 fixedly installed inside the insulating base 8.

[0030] Preferably, in any of the above embodiments, the insulating substrate 1 has a through hole for accommodating the conductive hole 2, and the two ends of the conductive hole 2 are provided with edge platforms that are attached to the insulating substrate 1. The conductive hole 2 conducts electricity through the edge platforms and the wiring piece 4.

[0031] The above technical solution is adopted as follows: the insulating substrate 1 is used as the reference layer of the multilayer circuit board, and the wiring pieces 4 are covered on both sides of the insulating substrate 1 as the circuit layer so that the multilayer circuit board can connect the circuits. The conductive holes 2 through the insulating substrate 1 are provided to connect the wiring pieces 4 on both sides of the insulating substrate 1, so that the wiring pieces 4 on both sides of the insulating substrate 1 can be connected through the conductive holes 2, thus ensuring the integrity of the multilayer circuit board.

[0032] Preferably, in any of the above embodiments, the protective sleeve 3 is fitted around the circumference of the edge platform, the protective sleeve 3 is located between the edge platform and the insulating substrate 1, and the edge platform and the protective sleeve 3 are located between the wiring piece 4 and the insulating substrate 1.

[0033] The above technical solution is adopted: the protective sleeve 3 is used to cover and insulate the conductive hole 2 that protrudes from the insulating substrate 1, so that the conductive hole 2 can only conduct electricity in the part that is disconnected from the wiring piece 4, and will not conduct electricity in the part of the conductive hole 2 that protrudes from the insulating substrate 1, thus ensuring the single direction of conduction and the safety of insulation protection.

[0034] Preferably, in any of the above embodiments, the wiring piece 4 has an electrical connection hole 10 with the same diameter as the conductive hole 2, and the insulating sheet 5 has a fastening hole for supporting the protective sleeve 3.

[0035] Using the above technical solution: the trace piece 4 can be connected to the pins of external electronic components through the power contact hole 10, so that the external electronic components can work by communicating with the trace piece 4 through the power contact hole 10. The insulating sheet 5 provides insulation protection for the side of the trace piece 4 close to the insulating substrate 1, thereby enhancing the insulation capability inside the multilayer circuit board.

[0036] Preferably, the protective boss 6 is provided with a semi-circular connecting platform 11 for supporting electronic components at the end away from the wiring piece 4, the insulating base 8 is provided with a fixing hole for fixing the elastic sleeve 9 at the end away from the wiring piece 4, and the protective boss 6 and the insulating base 8 are provided with a slot that communicates with the power connection hole 10 in the middle.

[0037] The above technical solution is adopted: a protective boss 6 is set to form an insulating pad at one end of the multilayer circuit board where the electronic component is connected, which isolates the surface of the electronic component and the trace plate 4, so that the connection part between the electronic component and the trace plate 4 is only the pin part of the electronic component, avoiding the trace plate 4 and other parts of the electronic component from being electrically connected and affecting safety.

[0038] Preferably, in any of the above embodiments, the insulating fastening ring 7 includes an elastic bending strip 71 made of elastic insulating material and a clamping ring 72 for fastening the pins of electronic components. The elastic bending strip 71 is fixedly installed inside the semi-circular connecting platform 11, and one end of the elastic bending strip 71 is fixedly installed with a clamping ring 72 that is movably connected to the protective boss 6.

[0039] The above technical solution is adopted as follows: the size of the clamping ring 72 is the same as that of the semi-circular connecting platform 11, and the thickness of the semi-circular connecting platform 11 is equal to half the thickness of the protective boss 6. The semi-circular connecting platform 11 is used to fix the elastic bending strip 71, and the elasticity of the elastic bending strip 71 itself pulls the fastening ring 72, so that the fastening ring 72 clamps and fastens the pins of the external electronic components, thereby enhancing the stability of the connection between the external electronic components and the multilayer circuit board.

[0040] Preferably, the elastic sleeve 9 includes an elastic rubber strip 91 made of highly elastic rubber material and an end cap 92 that seals the conductive hole 2. The elastic rubber strip 91 is fixedly installed inside the insulating base 8, and a deformable end cap 92 is fixedly installed at one end of the elastic rubber strip 91.

[0041] The above technical solution is adopted as follows: after the pins of the external electronic components pass through the multilayer circuit board, they enter the interior of the end cover 92. The elastic strip 91 and the deformation of the end cover 92 itself can deform with the pins of the electronic components, keeping the end cover 92 covering the pins at all times. The end cover 92 is used to cover the pins of the electronic components inside the multilayer circuit board, preventing the pins from protruding from the multilayer circuit board and connecting with other circuits, which would affect the circuit stability of the multilayer circuit board and ensure the stability of the insulation of the multilayer circuit board.

[0042] The working principle of this utility model of a multilayer circuit board with good insulation is as follows:

[0043] After the pins of the electronic component are inserted into the trace plate 4 and pass through the conductive hole 2, the end cap 92 covers and protects the pins of the electronic component. After the electronic component is inserted, the clamping ring 72 and the protective boss 6 are pulled by the elastic bending strip 71 to clamp and secure the pins of the electronic component.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. A protective boss 6 made of insulating material is set on the side of the trace plate 4 of the multilayer circuit board where electronic components are installed. The protective boss 6 supports the electronic components installed on the multilayer circuit board and forms an insulating isolation support layer between the multilayer circuit board and the electronic components. At the same time, an insulating fastening ring 7 made of insulating elastic material is set inside the protective boss 6 to clamp and fasten the pins of the electronic components. This enhances the installation stability of the electronic components and improves the insulation between them and the multilayer circuit board, effectively improving the insulation performance of the multilayer circuit board and enhancing the safety of its use.

[0046] 2. An elastic sleeve 9 is provided on one side of the fixed end face of the multilayer circuit board to seal the power connection part of the multilayer circuit board. The elastic sleeve 9, made of insulating material, can seal and isolate the pins of the installed electronic components by utilizing its own deformation capability, so as to prevent the multilayer circuit board from being connected to the external circuit and ensure the independence and safety of the multilayer circuit board.

Claims

1. A multilayer circuit board with good insulation, characterized in that: The device includes an insulating substrate (1) made of high-quality insulating material. The insulating substrate (1) has a conductive hole (2) with a conductive metal support inside. The two ends of the conductive hole (2) are fitted with protective sleeves (3) made of insulating material. One end of the conductive hole (2) is attached to a trace (4) for marking circuit diagrams. An insulating filler (5) fitted around the circumference of the protective sleeve (3) is provided between the trace (4) and the insulating substrate (1). There are two traces (4) distributed on both sides of the insulating substrate (1). One end of the trace (4) on one side is fixedly installed with a protective boss (6) made of insulating material. An insulating fastening ring (7) for clamping the conductive hole (2) is fixedly installed inside the protective boss (6). One end of the trace (4) on the other side is fixedly installed with an insulating base (8) as a support base. An elastic sleeve (9) for sealing the conductive hole (2) is fixedly installed inside the insulating base (8).

2. The multilayer circuit board with good insulation as described in claim 1, characterized in that: The insulating substrate (1) has a through hole inside to accommodate the conductive hole (2). The conductive hole (2) has edge platforms at both ends that are in contact with the insulating substrate (1). The conductive hole (2) conducts electricity through the edge platforms and the wiring piece (4).

3. A multilayer circuit board with good insulation as described in claim 2, characterized in that: The protective sleeve (3) is fitted around the circumference of the edge platform. The protective sleeve (3) is located between the edge platform and the insulating substrate (1). The edge platform and the protective sleeve (3) are located between the wiring piece (4) and the insulating substrate (1).

4. A multilayer circuit board with good insulation as described in claim 3, characterized in that: The wiring sheet (4) has an electrical connection hole (10) with the same diameter as the conductive hole (2) inside, and the filling insulating sheet (5) has a fastening hole to support the protective sleeve (3) inside.

5. A multilayer circuit board with good insulation as described in claim 4, characterized in that: The protective boss (6) is provided with a semi-circular connecting platform (11) for supporting electronic components at one end away from the wiring piece (4). The insulating seat (8) is provided with a fixing hole for fixing the elastic sleeve (9) at one end away from the wiring piece (4). The protective boss (6) and the insulating seat (8) are provided with a slot that communicates with the power connection hole (10) in the middle.

6. A multilayer circuit board with good insulation as described in claim 5, characterized in that: The insulating fastening ring (7) includes an elastic bending strip (71) made of elastic insulating material and a clamping ring (72) for fastening the pins of electronic components. The elastic bending strip (71) is fixedly installed inside the semi-circular connecting platform (11), and one end of the elastic bending strip (71) is fixedly installed with a clamping ring (72) that is movably connected to the protective boss (6).

7. A multilayer circuit board with good insulation as described in claim 6, characterized in that: The elastic sleeve (9) includes an elastic rubber strip (91) made of highly elastic rubber material and an end cap (92) that seals the conductive hole (2). The elastic rubber strip (91) is fixedly installed inside the insulating base (8), and a deformable end cap (92) is fixedly installed at one end of the elastic rubber strip (91).

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