Arc-shaped backboard connector assembly

Abstract

The invention discloses an arc-shaped backboard connector assembly, the arc-shaped backboard connector assembly is arranged on the inner wall of a barrel body area in a wall-attached manner, the arc-shaped backboard connector assembly comprises a plurality of layers of arc-shaped backboard units which are sequentially connected in an overlapped manner, the backboard units are mutually independent, and a complete current-carrying circuit is arranged in each backboard unit. The arc-shaped backboard connector assembly adopted in the application has the function of a multilayer printed circuit which is the same as that of a PCB laminated board, and meets the requirements of current and signal transmission in an application scene; and the independent back plate units can be bent to be matched with the arc-shaped back plate connector assembly formed by overlapping and connecting the back plate units on the inner wall of the cylinder body, so that the wall-attached mounting requirement of the cylinder body can be met, a gap between a traditional PCB laminated board and the inner wall of the cylinder body after the traditional PCB laminated board is mounted is eliminated, and the advantages of integration, light weight and miniaturization are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic connectors, and in particular to an arc-shaped backplane connector assembly. Background Art

[0002] A backplane is an electrical component inside an integrated circuit and is widely used in various fields.

[0003] When backplane connectors are used in some special cylinder areas, the more common layout is horizontal layout, that is, the backplane connector is perpendicular to the axis of the cylinder. In other more special application scenarios, the backplane connector needs to be arranged against the wall, such as Figure 1 As shown in , since the main body of the backplane connector is a laminate and the overall shape is flat, a gap will be formed between the backplane connector and the inner wall of the cylinder after being arranged against the wall, which cannot meet the requirements of high integration, lightweight and miniaturization.

[0004] Therefore, the backplane connector needs to be designed to be an arc that fits the inner wall of the cylinder. However, there are some problems in the prior art because the PCB laminate is made into an arc: first, during the laminate production process, PP glue needs to be poured between adjacent boards for bonding. If the single-layer board is made into an arc first, it will lead to the inability to pour glue and laminate; second, if the board is laminated first and then bent, it will not only increase the difficulty of bending, but also cause the misalignment of the connection holes and vias between the layers due to the lamination process error. Summary of the invention

[0005] The present application aims to solve the problem in the prior art that the backplane connector needs to be designed into an arc shape that fits the inner wall of the cylinder, and proposes the following technical solution:

[0006] The arc-shaped backplane connector component is arranged on the inner wall of the cylinder area in a wall-adherent manner, and includes a plurality of layers of arc-shaped backplane units that are stacked and connected in sequence. The backplane units are independent of each other and have a complete current-carrying circuit built in.

[0007] Furthermore, the backplane unit includes a metal conductive sheet layer and an isolation portion hollowed out on the metal conductive sheet layer, and the isolation portion forms a plurality of metal strips isolated from each other on the metal conductive sheet layer as current-carrying channels.

[0008] Furthermore, the backplane unit also includes a coating layer, which is coated on the outside of the metal conductive sheet layer, and the coating layer is embedded in the isolation part to physically insulate and isolate the adjacent metal strips.

[0009] Furthermore, the metal belt has connecting holes and / or avoidance holes.

[0010] Furthermore, the metal conductive sheet layer is a sheet made of any one of copper, gold, silver, molybdenum silicide, and chromium, or a combination of two or more thereof.

[0011] Furthermore, the thickness of the metal conductive layer does not exceed 0.2 mm, and the minimum width of the isolation portion 11 is not less than 0.3 mm.

[0012] Furthermore, the coating layer includes any one of polyethylene terephthalate, polycarbonate, polyimide, polypropylene glycol and polypropylene, or a combination of two or more thereof.

[0013] Furthermore, the manufacturing method of the arc-shaped backplane connector assembly is:

[0014] Select a metal conductive sheet layer that meets the requirements;

[0015] According to the design requirements, the metal conductive sheet layer is dematerialized to form an isolation part;

[0016] Using insulating material to form a coating layer outside the metal conductive sheet layer;

[0017] The conductive metal sheet layer is bent to obtain a single-layer backplane unit;

[0018] According to the curvature of the inner wall of the inner tube to be installed, the curvature of the back plate unit is designed, and according to the designed curvature, the size and position of the relevant connection holes after the multi-layer curved back plate units are stacked are calculated;

[0019] The designed and processed curved backplane units are stacked, the conductive connections between the relevant layers are connected and the connectors are assembled to obtain an arc-shaped backplane connector assembly that fits the inner wall of the cylinder.

[0020] The beneficial effects of this application are:

[0021] (1) The arc-shaped backplane connector assembly used in the present application is formed by overlapping and connecting relatively independent backplane units to form a multi-layer printed circuit with the same function as a PCB laminate, thereby meeting the current and signal transmission requirements in the application scenario.

[0022] (2) Based on the independent backplane unit, the metal conductive sheet is removed and processed to obtain each backplane unit that can be bent and matched with the inner wall of the cylinder more conveniently. The arc-shaped backplane connector assembly formed by overlapping and connecting each backplane unit that can be bent and matched with the inner wall of the cylinder can also meet the requirements of the cylinder wall-mounted installation, eliminate the gap between the traditional PCB laminate and the inner wall of the cylinder after installation, and improve the advantages of integration, lightness and miniaturization;

[0023] (3) Based on the independent backplane unit, the metal conductive sheet layer is removed for processing. When manufacturing the curved backplane connector assembly, a single-layer backplane unit is first manufactured, and then the design and calculation are matched with the curvature of the inner wall of the inner tube to be installed. The size and position of the related connection holes of the backplane units of other layers in the superimposed state can be obtained, thereby avoiding the problem of misalignment of the connection holes, vias, etc. when the backplane units are fully assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure shows a schematic diagram of a laminated backplane connector in the prior art arranged against a wall in a barrel area;

[0025] Figure 2 Shown is a schematic diagram of the structure of the curved backplane connector assembly;

[0026] Figure 3 Shown is a schematic structural diagram of a backplane unit;

[0027] Figure 4 It is shown that Figure 3 A partial enlarged view of the middle A;

[0028] Figure 5 Shown is a schematic diagram of the layered structure of the backplane unit. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments.

[0030] Example

[0031] Figure 2 What is shown is a schematic diagram of the structure of the arc-shaped backplane connector assembly recorded in this embodiment, and the arc-shaped backplane connector assembly includes a plurality of layers of arc-shaped backplane units 10 stacked in sequence. The function of the backplane unit 10 is the same as that of the copper printed circuit in the PCB laminate, and is used to transmit current or electrical signals with current as the carrier. Consistent with the PCB laminate, the number of layers of the backplane unit 10 is the same as the number of layers in the PCB laminate. For example, a six-layer PCB has six layers of copper printed circuits, and corresponding to this embodiment, a six-layer arc-shaped backplane unit 10 stacked in sequence needs to be designed.

[0032] Figure 3 The backplane unit 10 is a schematic structural diagram. The backplane unit 10 is formed of a plurality of isolation parts 11 by removing material from a metal conductive sheet. The isolation parts 11 divide the original metal conductive sheet into a plurality of metal strips 12 isolated from each other. The metal strips 12 are connected between two connectors or rigid PCBs or other components as current-carrying channels. Figure 5It shows a schematic diagram of the layered structure of the backplane unit 10 , in which a coating layer 20 is formed outside the metal conductive sheet layer, the coating layer 20 completely covers the metal conductive sheet layer, and at the same time fills the isolation part 11 to isolate the adjacent metal strips 12 .

[0033] Figure 4 It shows Figure 3 The enlarged view of the part at A in the middle, see Figure 3 and Figure 4 A connection hole 121 is formed on each metal strip 12, which is used to realize electrical connection with other components, such as connectors, active devices, printed circuit boards, etc.; and electrical connection between different backplane units 10. The electrical connection between different layers of backplane units 10 is realized by setting conductive columns inside the connection hole 121.

[0034] At the same time, according to different design requirements, an avoidance hole 122 is formed on the specific metal belt 12 , and the avoidance hole 122 is suitable for avoiding other components during the connection process; usually the size of the connection hole 121 is smaller than the avoidance hole 122 .

[0035] In this embodiment, the structure of the arc-shaped backplane connector assembly is recorded, and the metal conductive sheet layer in the arc-shaped backplane connector assembly is an excellent electrical conductor material, which can realize the functions of signal transmission and current transmission, and at the same time, the metal conductive sheet layer can carry hundreds of amperes of current transmission.

[0036] According to the records of this embodiment, the metal conductive sheet layer designed in this application is designed to have the same width. When the maximum current carrying capacity reaches 120A, the thickness does not exceed 1.4mm. Together with the coating layer 20 formed on the outside, the total thickness will not exceed 2mm. The advantage here is not only that it can carry large currents, but also that the material of the entire arc-shaped backplane connector assembly is mainly metal conductive sheet layers. The metal conductive sheet layer, taking copper as an example, has excellent bending properties and can meet the requirements of fitting with the inner wall of the cylinder.

[0037] In this embodiment, as recorded as the material of the metal conductive sheet layer, the metal conductive sheet layer is a sheet made of any one or a combination of two or more, among which copper is preferred, and the purity of copper is above 99.7%.

[0038] In this embodiment, as a record of the metal conductive sheet material, the thickness of the metal conductive sheet does not exceed 0.2 mm, which is related to the width design of the isolation portion 11 in the metal conductive sheet and the subsequent molding process.

[0039] In the present embodiment, as a record of the metal conductive sheet material, the isolation portion 11 is designed to form a plurality of metal strips 12 isolated from each other on the metal conductive sheet. Under the premise of meeting the design current-carrying design requirements, the cross-sectional dimensions of the metal strips 12 cannot be changed. When used in narrow and limited spaces, the width of the isolation portion 11 needs to be compressed as much as possible to achieve the purpose of miniaturization of the arc backplane connector assembly. In the present application, when the thickness of the metal conductive sheet is set to 0.2 mm, only a hole with a minimum width of 0.3 mm can be processed, that is, the design minimum width of the isolation portion 11 is not less than 0.3 mm.

[0040] In this embodiment, the coating layer 20 is an insulating material, including any one of polyethylene terephthalate, polycarbonate, polyimide, polypropylene glycol and polypropylene.

[0041] Based on the structure of the arc-shaped backplane connector assembly described in this embodiment, taking a single-layer metal conductive sheet as an example, this embodiment provides a processing technology for the arc-shaped backplane connector assembly, specifically:

[0042] Select a metal conductive sheet layer that meets the requirements;

[0043] According to the design requirements, the metal conductive sheet layer is dematerialized to form an isolation portion 11;

[0044] Using insulating material to form a coating layer 20 outside the metal conductive sheet layer;

[0045] The conductive metal sheet layer is bent to obtain a single-layer backplane unit 10;

[0046] According to the curvature of the inner wall of the inner tube to be installed, the curvature of the back plate unit 10 is designed, and according to the designed curvature, the size and position of the relevant connection holes after the multi-layer curved back plate units 10 are stacked are calculated;

[0047] By directly stacking the above-designed and processed curved backplane units 10, connecting the conductive connections between the relevant layers and assembling the connectors, an arc-shaped backplane connector assembly that fits the inner wall of the cylinder can be obtained.

[0048] In the above process, the metal conductive sheet layer that meets the requirements is selected by selecting a metal conductive sheet layer with a certain thickness according to the design requirements, such as the designed thickness of the metal conductive sheet layer is 0.2 mm.

[0049] Destocking refers to removing unnecessary parts from a complete and continuous metal conductive sheet layer, leaving the required metal strip 12. It should be noted that after the destocking is completed, there is at least a section of connecting material between adjacent metal strips 12 in the same arc-shaped backplane connector assembly. All metal strips 12 are connected into an arc-shaped backplane connector assembly as a whole through the connecting material to facilitate the integrity of the arc-shaped backplane connector assembly in subsequent processing, and the connecting material part is removed before the coating layer 20 is fully formed to ensure the electrical insulation between the metal strips 12.

[0050] One way to implement the above-mentioned material removal process is mechanical stamping, that is, a stamping die with a corresponding pattern is designed to stamp out the metal conductive sheet layer to obtain a metal strip 12 with a continuous material, and at the same time, a connecting hole 121 and an avoidance hole 122 are formed.

[0051] The method for forming the coating layer 20 is as follows: placing the metal strip 12 with the connecting material on the backing plate, applying the insulating material and waiting for it to solidify, and then turning it over and applying the other side.

[0052] It should be noted that before applying the first side insulating material, the connecting material needs to be removed. Usually, positioning pins corresponding to the connecting holes 121 are set on the lining plate. All metal strips 12 are fixed to the lining plate by the positioning pins to maintain their integrity. On the other hand, the positioning pins can play an isolating role when applying the insulating material, preventing the insulating material from entering the connecting hole 121, which is not conducive to the later electrical connection with connectors and other components.

[0053] Of course, the method of forming the insulating material on the surface of the metal belt 12 is not limited to brushing, and can also be other methods such as spraying and dipping.

[0054] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it.

Claims

1. An arc-shaped backplane connector assembly, characterized in that: The arc-shaped backplane connector assembly is arranged on the inner wall of the cylinder area in a wall-adherent manner, and includes a plurality of layers of arc-shaped backplane units that are stacked and connected in sequence. The backplane units are independent of each other and have a complete current-carrying circuit built in.

2. The curved backplane connector assembly according to claim 1, characterized in that: The back plate unit comprises a metal conductive sheet layer and an isolation portion hollowed out on the metal conductive sheet layer, wherein the isolation portion forms a plurality of metal strips isolated from each other on the metal conductive sheet layer as current-carrying channels.

3. The curved backplane connector assembly according to claim 2, characterized in that: The back plate unit further comprises a coating layer, which is coated on the outside of the metal conductive sheet layer and is embedded in the isolation portion to physically insulate and isolate the adjacent metal strips.

4. The curved backplane connector assembly according to claim 2, characterized in that: The metal belt is provided with connection holes and / or avoidance holes.

5. The curved backplane connector assembly according to claim 2, characterized in that: The metal conductive sheet layer is a sheet made of any one of copper, gold, silver, molybdenum silicide, and chromium, or a combination of two or more thereof.

6. The curved backplane connector assembly according to claim 2, characterized in that: The thickness of the metal conductive layer does not exceed 0.2 mm, and the minimum width of the isolation portion 11 is not less than 0.3 mm.

7. The curved backplane connector assembly according to claim 2, characterized in that: The coating layer comprises any one of polyethylene terephthalate, polycarbonate, polyimide, polypropylene glycol and polypropylene, or a combination of two or more thereof.

8. The curved backplane connector assembly according to claim 2, characterized in that: The manufacturing method of the arc-shaped backplane connector assembly is as follows: Select a metal conductive sheet layer that meets the requirements; According to the design requirements, the metal conductive sheet layer is dematerialized to form an isolation part; Using insulating material to form a coating layer outside the metal conductive sheet layer; The conductive metal sheet layer is bent to obtain a single-layer backplane unit; According to the curvature of the inner wall of the inner tube to be installed, the curvature of the back plate unit is designed, and according to the designed curvature, the size and position of the relevant connection holes after the multi-layer curved back plate units are stacked are calculated; The designed and processed curved backplane units are stacked, the conductive connections between the relevant layers are connected and the connectors are assembled to obtain an arc-shaped backplane connector assembly that fits the inner wall of the cylinder.

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