Bending-resistant PCB circuit board

Abstract

The utility model provides a bend -resistant PCB circuit board, including, the surface of base plate is provided with first bend -resistant mechanism, first bend -resistant mechanism includes grid and first damping part, grid is connected in the inside of base plate, first damping part is connected in the inside of grid, second bend -resistant mechanism includes reinforcing strip, reinforcing strip is connected in the bottom of base plate, first damping part is used for converting the vibration force of base plate surface into energy, the top of base plate is connected with copper foil, the top of copper foil is connected with flexible film, first damping part is used for converting the vibration force of base plate surface into energy, the top of base plate is connected with copper foil, the top of copper foil is connected with flexible film, reinforcing strip is used for the support of base plate, and the four corners of base plate are installed with anti -collision cover, the bend -resistant PCB circuit board provided by the utility model passes through the flexible and rigid combination of first bend -resistant mechanism and second bend -resistant mechanism, has improved the support ability of base plate, and the flexible layer can absorb stress, thereby has improved the bend -resistant ability of base plate.

Description

Technical Field

[0001] This utility model relates to the field of PCB circuit board design, and in particular to a PCB circuit board that is resistant to bending. Background Technology

[0002] A PCB, also known as a printed circuit board, is an important electronic component. It serves as the support for electronic components and the carrier for the electrical interconnection of these components. Because it is manufactured using electronic printing technology, it is called a "printed" circuit board.

[0003] A typical circuit board uses a synergistic structure of a base layer, a conductive layer, and a solder mask layer to connect dispersed electronic components in an orderly manner according to the circuit design, thereby enabling current transmission and signal interaction.

[0004] However, the base layer is mainly composed of fiberglass cloth and epoxy resin, which are rigid insulating materials with high hardness and brittleness and extremely poor flexibility. When subjected to bending force, the base material is prone to cracks or breakage. Especially under repeated bending, the fiberglass inside the base material will gradually fail due to fatigue damage, eventually leading to damage to the overall structure.

[0005] Therefore, it is necessary to provide bend-resistant PCB circuit boards to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a bend-resistant PCB circuit board, which solves the problem of poor bend resistance caused by the brittleness of the substrate.

[0007] To solve the above-mentioned technical problems, the present invention provides a bend-resistant PCB circuit board, comprising a substrate, wherein a first bend-resistant mechanism is provided on the surface of the substrate, the first bend-resistant mechanism comprising a mesh and a first shock-absorbing component, the mesh being connected to the interior of the substrate, and the first shock-absorbing component being connected to the interior of the mesh;

[0008] The second bending resistance mechanism includes a reinforcing strip connected to the bottom of the substrate.

[0009] Preferably, the first damping component is used to convert the vibration force on the substrate surface into energy, and a copper foil is connected to the top of the substrate, and a flexible film is connected to the top of the copper foil.

[0010] Preferably, the reinforcing strip is used to support the substrate, anti-collision sleeves are installed at the four corners of the substrate, and a second shock-absorbing component is connected to the bottom of the substrate.

[0011] Preferably, a protective mechanism is provided on the outside of the substrate, the protective mechanism including a protective base, and the substrate is installed inside the protective base.

[0012] Preferably, the front and rear ends of the protective base are connected to fixing plates, and the surface of the fixing plates is connected to elastic elements, which are connected to the interior of the protective base.

[0013] Preferably, the elastic element is used to push the fixing plate to the surface of the top of the substrate, and the left and right ends of the protective seat are connected to threaded plates.

[0014] Preferably, the protective seat is provided with a push-out mechanism at both ends, the push-out mechanism includes a push plate and a push plate, the push plate is connected to both ends of the protective seat, and a pull plate is connected to the surface of the protective seat.

[0015] Compared with related technologies, the bend-resistant PCB circuit board provided by this utility model has the following beneficial effects:

[0016] This utility model provides a bend-resistant PCB circuit board. By combining the flexibility and rigidity of the first and second bend-resistant mechanisms, the support capacity of the substrate is improved, while the flexible layer can absorb stress, thereby improving the bend resistance of the substrate. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the bend-resistant PCB circuit board provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the internal structure.

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0020] Figure 4 for Figure 1 The diagram shows the side-bottom structure.

[0021] Figure 5 for Figure 1 The diagram shows the connection structure between the substrate and the protective mechanism.

[0022] Figure 6 for Figure 5 The diagram shows the side-bottom structure.

[0023] Numbered in the diagram: 1. Substrate

[0024] 2. First bending-resistant mechanism; 21. Grid; 22. First shock-absorbing component; 23. Copper foil; 24. Flexible membrane.

[0025] 3. Second bending resistance mechanism; 31. Anti-collision sleeve; 32. Reinforcing strip; 33. Second shock absorption component.

[0026] 4. Protective mechanism; 41. Protective base; 42. Fixing plate; 43. Elastic element; 44. Threaded plate.

[0027] 5. Pushing mechanism, 51. Push plate, 52. Pulling plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the bend-resistant PCB circuit board provided by this utility model; Figure 2 for Figure 1 The diagram shows the internal structure. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 for Figure 1 The diagram shows the side-bottom structure. Figure 5 for Figure 1 The diagram shows the connection structure between the substrate 1 and the protective mechanism 4. Figure 6 for Figure 5 The diagram shows the side-bottom structure. The bend-resistant PCB circuit board includes: a substrate 1, on the surface of which a first bend-resistant mechanism 2 is provided. The first bend-resistant mechanism 2 includes a mesh 21 and a first shock-absorbing component 22. The mesh 21 is connected to the interior of the substrate 1, and the first shock-absorbing component 22 is connected to the interior of the mesh 21.

[0030] The second bending resistance mechanism 3 includes a reinforcing strip 32, which is connected to the bottom of the substrate 1.

[0031] Each of the four corners of the substrate 1 has a hole through which bolts can be threaded into the machine body to fix the substrate 1 inside the machine body. The grid 21 is composed of multiple hexagonal slots forming a honeycomb structure, and each hexagonal slot is connected to a first shock-absorbing component 22. The bending stress is dispersed by the mutual support of the hexagonal slots, which improves the strength of the substrate 1 and reduces its weight. When the substrate 1 is bent, the first shock-absorbing component 22 generates controllable deformation to absorb energy and reduce the brittle fracture of the substrate 1. There are multiple reinforcing strips 32, which are arrayed and connected to the bottom of the substrate 1. The surface array has triangular slots, which increases the support force of the reinforcing strips 32. The reinforcing strips 32 are perpendicular to the bending force, which increases the moment of inertia of the section, thereby improving the bending resistance.

[0032] The first damping component 22 is used to convert the vibration force on the surface of the substrate 1 into energy. A copper foil 23 is connected to the top of the substrate 1, and a flexible film 24 is connected to the top of the copper foil 23.

[0033] The first shock-absorbing component 22 can be a rubber block, EVA foam, etc., preferably a rubber block. When subjected to external impact, it absorbs the vibration of the substrate 1 surface through deformation, thereby achieving the effect of shock absorption of the substrate 1. The copper foil 23 connects the pins of components such as resistors, capacitors, and chips to form a complete circuit loop, ensuring that electrical signals are transmitted in an orderly manner between components. By covering the copper foil 23 in the non-welding area with the flexible film 24, an insulating isolation layer is formed.

[0034] The reinforcing strip 32 is used to support the base plate 1. Anti-collision sleeves 31 are installed at the four corners of the base plate 1. A second shock-absorbing component 33 is connected to the bottom of the base plate 1.

[0035] The four corners of the substrate 1 are rounded. When an external object collides with the four corners, the concentrated stress can be dispersed to a larger area. There are four anti-collision sleeves 31, which are respectively fitted on the surface of the four corners. They can be made of rubber or sponge. When an object hits the four corners of the substrate 1, the anti-collision sleeves 31 deform to absorb the impact force, thereby preventing the substrate 1 from breaking and deforming. There are multiple second shock-absorbing components 33, which are arrayed and connected to the bottom of the substrate 1 around the reinforcing strip 32. They can be rubber blocks or EVA foam, preferably rubber blocks. They work on the same principle as the first shock-absorbing component 22, reducing the vibration force on the surface of the substrate 1 by absorbing the vibration force through elastic deformation.

[0036] The substrate 1 is provided with a protective mechanism 4 on its exterior. The protective mechanism 4 includes a protective base 41, and the substrate 1 is installed inside the protective base 41.

[0037] The protective base 41 is square in shape and has a slot inside. The base plate 1 can be inserted into the slot. There are two fixing plates 42, which are L-shaped and are slidably connected to the front and rear ends of the protective base 41 respectively.

[0038] The front and rear ends of the protective base 41 are connected to a fixing plate 42, and an elastic element 43 is connected to the surface of the fixing plate 42. The elastic element 43 is connected to the inside of the protective base 41.

[0039] The protective base 41 has a groove inside both the front and rear ends. One end of the two fixed plates 42 is slidably embedded in the two grooves. The elastic element 43 can be a spring slide rod, a spring sheet, etc., preferably a spring slide rod. The slide rod is fixedly connected to the grooves at the front and rear ends of the protective base 41.

[0040] The elastic element 43 is used to push the fixing plate 42 to connect to the top surface of the base plate 1, and the left and right ends of the protective seat 41 are connected to threaded plates 44.

[0041] One end of the fixed plate 42 is slidably connected to the surface of the slide rod in the elastic member 43, and one end of the spring in the elastic member 43 is connected to the surface of the fixed plate 42. Through the elastic force of the spring, the fixed plate 42 can be pushed against the top of the base plate 1, thereby fixing the base plate 1 inside the protective seat 41. Two threaded plates 44 are fixedly connected to the outer surfaces of both ends of the protective seat 41. The bolts can be threaded onto the machine body through the threaded plates 44, which is convenient for later replacement.

[0042] The protective seat 41 is provided with a push-out mechanism 5 at both ends. The push-out mechanism 5 includes a push plate 51 and a pull plate 52. The push plate 51 is connected to both ends of the protective seat 41. The surface of the protective seat 41 is connected to a pull plate 52.

[0043] There are two push plates 51. The surfaces of both ends of the protective base 41 are provided with a sliding groove. The two push plates 51 are slidably connected to the inside of the two sliding grooves. When the base plate 1 is installed inside the protective base 41, the two push plates 51 are connected to the bottom of both ends of the base plate 1. When the base plate 1 needs to be removed, after pulling the two fixing plates 42, the two pulling plates 52 are pulled upwards, and the push plates 51 push the base plate 1 out of the protective base 41. The operation is convenient and effectively reduces the phenomenon of stress concentration and bending caused by holding the base plate 1.

[0044] The working principle of the bend-resistant PCB circuit board provided by this utility model is as follows:

[0045] When the substrate 1 is subjected to external pressure, the first shock-absorbing component 22 supports each other to disperse the bending force, while the reinforcing strip 32 increases the moment of inertia of the substrate 1 to resist the bending force. The first shock-absorbing component 22 and the second shock-absorbing component 33 deform to buffer and absorb shock. When the external impact hits the corner of the substrate 1, the anti-collision sleeve 31 deforms to absorb the vibration force and prevent the substrate 1 from breaking.

[0046] Compared with related technologies, the bend-resistant PCB circuit board provided by this utility model has the following beneficial effects:

[0047] This utility model provides a bend-resistant PCB circuit board. By combining the flexibility and rigidity of the first bend-resistant mechanism 2 and the second bend-resistant mechanism 3, the support capacity of the substrate 1 is improved, while the flexible layer can absorb stress, thereby improving the bend resistance of the substrate 1.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bend-resistant PCB circuit board, characterized in that, The substrate includes a first bending resistance mechanism on its surface, the first bending resistance mechanism including a mesh and a first shock-absorbing component, the mesh being connected to the interior of the substrate, and the first shock-absorbing component being connected to the interior of the mesh; The second bending resistance mechanism includes a reinforcing strip connected to the bottom of the substrate.

2. The bend-resistant PCB circuit board according to claim 1, characterized in that, The first damping component is used to convert the vibration force on the surface of the substrate into energy. A copper foil is connected to the top of the substrate, and a flexible film is connected to the top of the copper foil.

3. The bend-resistant PCB circuit board according to claim 1, characterized in that, The reinforcing strip is used to support the substrate, the four corners of the substrate are fitted with anti-collision sleeves, and the bottom of the substrate is connected to a second shock-absorbing component.

4. The bend-resistant PCB circuit board according to claim 1, characterized in that, The substrate is provided with a protective mechanism on its exterior. The protective mechanism includes a protective base, and the substrate is installed inside the protective base.

5. The bend-resistant PCB circuit board according to claim 4, characterized in that, The front and rear ends of the protective base are connected to fixed plates, and the surface of the fixed plates is connected to elastic elements, which are connected to the inside of the protective base.

6. The bend-resistant PCB circuit board according to claim 5, characterized in that, The elastic element is used to push the fixing plate to the surface of the top of the base plate, and the left and right ends of the protective seat are connected to threaded plates.

7. The bend-resistant PCB circuit board according to claim 6, characterized in that, The protective seat is provided with a push-out mechanism at both ends. The push-out mechanism includes a push plate and a push plate. The push plate is connected to both ends of the protective seat, and a pull plate is connected to the surface of the protective seat.

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