PCB board electrical hard connection structure under micro space

Abstract

This utility model relates to a rigid electrical connection structure between PCB boards, specifically a rigid electrical connection structure between PCB boards in a micro-space. The structure includes a PCB board body, an insulating component, conductive strips, and a mounting substrate. The PCB boards are arranged in pairs. Each PCB board body has multiple mounting holes and multiple connection terminals on its back side. The mounting substrate is mounted on one side of the insulating component. Each group of conductive strips is mounted on the side of the insulating component away from the mounting substrate, and each conductive strip has fastening holes at both ends. The PCB boards are all located on the side of the insulating component with the conductive strips, and the two PCB boards in the same group are respectively located at the ends of the corresponding group of conductive strips. The mounting holes and connection terminals on the PCB boards in the same group are connected to the fastening holes on the corresponding group of conductive strips via conductive fasteners. This utility model can solve the problems of difficult wiring, messy wiring, and unreliable connections caused by traditional wire harness connections in confined spaces.

Description

Technical Field

[0001] This utility model relates to an electrical hard connection structure between PCB boards, specifically an electrical hard connection structure between PCB boards in a microspace. Background Technology

[0002] With the rapid development of the electronics and power industry, PCB products are trending towards high density, high power, and modular development, supported by mature technologies. Therefore, for individual PCB products, smaller size, more reasonable design and layout are required.

[0003] See Figure 1 Traditional PCB products typically include a PCB body 01, support pillars 02, substrate 03, and mounting terminals 04. Due to the high current characteristics of the main power lines, two PCB bodies 01 are usually connected by wire lugs 05 and wire harnesses. This connection method is simple, economical, and highly flexible. The wire harness can be organized and constrained by accessories such as wire clamps and wire channels to achieve a compact and aesthetically pleasing layout. However, it is quite difficult to connect the PCB power lines using wire lugs and wire harnesses in a confined space.

[0004] First, due to space constraints, wire harnesses are difficult to bend and cannot be properly restrained, resulting in messy harnesses and even wear that can lead to accidental discharge and product damage. Second, during product assembly and customer maintenance, repeated disassembly is inevitable. After repeated bending, the wire harness is prone to insulation damage, or conductor cracks or breaks, creating potential quality hazards. Furthermore, for products operating in harsh environments such as vibration and impact, reliability is particularly important. Especially when the wire lugs or the harness itself are under stress, connections are prone to loosening or damage, causing product damage or personal injury. Utility Model Content

[0005] The purpose of this utility model is to solve the technical problems of existing connection methods using wire lugs and wire harnesses, which have problems such as messy wire harnesses, easy wear and tear leading to accidental discharge and product damage; wire harnesses are prone to insulation damage or conductor cracks or breaks after repeated bending, causing quality hazards; and under stress, the connection is prone to loosening or damage, causing product damage or personal injury. The present invention provides a rigid electrical connection structure between PCB boards in a micro-space.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A PCB board inter-board electrical hard connection structure in a micro-space, which is special in that:

[0008] Includes the PCB board body, insulating components, conductive strips, and mounting substrate;

[0009] The number of PCB bodies is 2N, arranged in pairs; N≥1; each of the 2N PCB bodies has multiple mounting holes and multiple connection terminals on its back, with each connection terminal corresponding to a mounting hole; the mounting substrate is mounted on one side of the insulating component; the number of conductive strips is N groups, with the number of conductive strips in each group being the same as the number of mounting holes on one PCB body. Each group of conductive strips is mounted on the side of the insulating component away from the mounting substrate, and each conductive strip has fastening holes at both ends. The fastening holes at both ends of the N groups of conductive strips correspond one-to-one with the multiple mounting holes on the two PCB bodies in the same group; the N groups of PCB bodies are all located on the side of the insulating component with conductive strips and are arranged corresponding to the N groups of conductive strips, with the two PCB bodies in the same group located at the ends of the corresponding group of conductive strips; the mounting holes and connection terminals on the same group of PCB bodies are connected to the fastening holes on the corresponding group of conductive strips through conductive fasteners to achieve the assembly of the PCB body and the conductive strip, and to achieve the electrical connection of the same group of PCB bodies.

[0010] Furthermore, the insulating component includes an insulating base and an insulating protrusion disposed on the insulating base; a conductive strip is mounted on the insulating protrusion, and a mounting substrate is mounted on the side of the insulating base away from the insulating protrusion.

[0011] Furthermore, the insulating protrusion is provided with multiple positioning grooves that are adapted to the conductive strips. The multiple conductive strips are respectively set in the multiple positioning grooves and are installed and fixed to the insulating protrusion by the mounting parts.

[0012] Furthermore, both the insulating base and the insulating protrusion are cuboid structures. The width of the insulating protrusion is less than 0.4 times the width of the insulating base, and the length is greater than 0.9 times the length of the insulating base. The length direction of the insulating protrusion is consistent with the length direction of the insulating base, and the centerline of the width direction coincides with the centerline of the width direction of the insulating base. Multiple positioning grooves are arranged along the length direction of the insulating protrusion, and there is a gap between two adjacent positioning grooves. Each conductive strip is arranged perpendicular to the length direction of the insulating protrusion, and its middle part is installed in the corresponding positioning groove.

[0013] Furthermore, the conductive strip is a rectangular strip, with its middle part mounted on an insulating protrusion, and a fastening hole provided at each end of its length; there are two PCB boards, which are symmetrically arranged along the length of the conductive strip.

[0014] Furthermore, the mounting component is a bolt.

[0015] Furthermore, the insulating base has multiple connecting sub-holes on the side away from the insulating protrusion, and the mounting base has multiple connecting female holes, with the multiple connecting sub-holes and multiple connecting female holes corresponding one-to-one; the connecting sub-holes on the insulating base and the connecting female holes on the mounting base are connected by connectors.

[0016] Furthermore, the connecting sub-hole is a threaded hole, and the connecting component is a bolt.

[0017] Furthermore, both the connecting terminals and the conductive strip are made of copper.

[0018] Furthermore, the conductive fastener includes a connecting bolt and a rivet nut; the rivet nut is located on the side of the conductive strip near the insulating part and is coaxially arranged with the fastening hole, and the connecting bolt passes through the mounting hole, the connecting terminal and the fastening hole in sequence to connect with the rivet nut.

[0019] The beneficial effects of this utility model are:

[0020] It solves the problems of difficult wiring, messy wiring, and unreliable connection caused by traditional wire harness connections in confined spaces;

[0021] Using copper busbars instead of traditional wire harnesses can accommodate larger current carrying capacity;

[0022] It improved the efficiency of disassembly and assembly during the maintenance process;

[0023] It improves the reliability and safety of electrical connections. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the existing electrical connection structure between PCB boards. a is a schematic diagram of the wire lug structure (not shown), and b is a schematic diagram of the wire lug connection.

[0025] Figure 1 In the middle: 01-PCB board body, 02-support post, 03-substrate, 04-mounting terminal, 05-wire lug;

[0026] Figure 2 This is a schematic diagram of the PCB board body in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the installation structure of the insulating component and the conductive strip in an embodiment of this utility model. a is a top view and b is a bottom view.

[0028] Figure 4 This is a schematic diagram of the structure of the insulating component in an embodiment of this utility model;

[0029] Figure 5 This is an assembly diagram of the insulating component, conductive strip, and mounting substrate in an embodiment of this utility model;

[0030] Figure 6 This is a structural schematic diagram of an embodiment of the present utility model.

[0031] Figures 2 to 6 middle:

[0032] 1-PCB board body, 2-insulator, 21-insulator base, 22-insulator protrusion, 3-conductive strip, 4-mounting substrate, 5-mounting hole, 6-connecting terminal, 7-fastening hole, 8-conductive fastener, 81-connecting bolt, 82-riveting nut, 9-positioning groove, 10-connecting sub-hole. Detailed Implementation

[0033] To make the objectives, advantages, and features of this utility model clearer, the following detailed description of a micro-space-based electrical hard connection structure between PCB boards, in conjunction with the accompanying drawings and specific embodiments, will further illustrate the advantages and features of this utility model. The advantages and features of this utility model will become clearer according to the following specific embodiments.

[0034] Example 1

[0035] See Figures 2 to 6 This embodiment describes a hard electrical connection structure between PCB boards in a microspace, which mainly consists of four parts: PCB board body 1, insulating component 2, conductive strip 3, and mounting substrate 4.

[0036] The number of PCB board bodies 1 is 2N, and they are arranged in pairs; N≥1; see [link / reference] Figure 2 and Figure 6 In this embodiment, the number of PCB board bodies 1 is set to 2. Each of the two PCB board bodies 1 is provided with multiple mounting holes 5. Considering the size and installation stability, the number of mounting holes 5 is set to three. In addition, three connecting terminals 6 are provided on the back of the PCB board bodies 1, and the three connecting terminals 6 are arranged one-to-one with the three mounting holes 5. The connecting terminals 6 are made of copper to enhance their conductivity.

[0037] See Figure 4 The insulating component 2 includes an insulating base 21 and an insulating protrusion 22 disposed on the insulating base 21; both the insulating base 21 and the insulating protrusion 22 are cuboid structures, the width of the insulating protrusion 22 is less than 0.4 times the width of the insulating base 21, and the length is greater than 0.9 times the length of the insulating base 21; the length direction of the insulating protrusion 22 is along the length direction of the insulating base 21, and the centerline of the width direction coincides with the centerline of the width direction of the insulating base 21;

[0038] The insulating protrusion 22 is provided with three positioning grooves 9 that are adapted to the conductive strip 3. The three positioning grooves 9 are arranged along the length direction of the insulating protrusion 22, and there is a gap between two adjacent positioning grooves 9. See Figure 3 and Figure 5 The three conductive strips 3 are respectively set in the three positioning grooves 9 and are installed with the insulating protrusions 22 by the mounting parts (bolts). The positioning grooves 9 can prevent the conductive strips 3 from rotating, thereby affecting the assembly relationship.

[0039] See Figure 3 The insulating base 21 has four connecting sub-holes 10 on the side away from the insulating protrusion 22. The four connecting sub-holes 10 are respectively located at the four corners of the insulating base 21. The connecting sub-holes 10 are threaded holes. The mounting base 4 has four connecting female holes. The four connecting sub-holes 10 and the four connecting female holes are arranged one-to-one. The connecting sub-holes 10 on the insulating base 21 and the connecting female holes on the mounting base 4 are connected by connectors (bolts).

[0040] All conductive strips 3 are made of copper and are rectangular. The central portion is mounted on the insulating protrusion 22, and each end of the strip has a fastening hole 7. Two fastening holes 7 on each of the three conductive strips 3 correspond one-to-one with three mounting holes 5 on the two PCB board bodies 1. The mounting holes 5 and connecting terminals 6 on the PCB board bodies 1 are connected to the fastening holes 7 on the conductive strips 3 via conductive fasteners 8. (See attached image.) Figure 3 The conductive fastener 8 includes a connecting bolt 81 and a rivet nut 82. The rivet nut 82 is located on the side of the conductive strip 3 near the insulating part 2 and is coaxially arranged with the fastening hole 7. The connecting bolt 81 passes through the mounting hole 5, the connecting terminal 6 and the fastening hole 7 in sequence and is connected to the rivet nut 82 to realize the assembly of the PCB board body 1 and the conductive strip 3, and at the same time realize the electrical connection between the two PCB board bodies 1.

[0041] Example 2

[0042] When there are two sets of PCB boards, the two sets of PCB boards are arranged sequentially along the length of the insulating protrusions, and the remaining connection structures are the same as in Example 1.

Claims

1. A PCB board inter-board electrical hard connection structure in a micro-space, characterized in that: It includes a PCB board body (1), insulating components (2), conductive strips (3), and mounting substrate (4); The number of PCB board bodies (1) is 2N, and they are arranged in pairs; N≥1; Each of the 2N PCB board bodies (1) is provided with multiple mounting holes (5), and each of them is provided with multiple connecting terminals (6) on its back side. The multiple connecting terminals (6) are provided in a one-to-one correspondence with the multiple mounting holes (5). The mounting base plate (4) is mounted on one side of the insulating component (2); The number of conductive strips (3) is N groups. The number of conductive strips (3) in each group is the same as the number of mounting holes (5) on a PCB board body (1). The N groups of conductive strips (3) are all installed on the side of the insulating part (2) away from the mounting substrate (4). Each conductive strip (3) has fastening holes (7) at both ends. The fastening holes (7) at both ends of each group of conductive strips (3) correspond one-to-one with the multiple mounting holes (5) on the two PCB board bodies (1) in the same group. The N groups of PCB board bodies (1) are all located on the side of the insulating part (2) where the conductive strip (3) is provided, and are corresponding to the N groups of conductive strips (3). The two PCB board bodies (1) of the same group are respectively located at the two ends of the corresponding group of conductive strips (3). The mounting holes (5) and connecting terminals (6) on the same group of PCB board bodies (1) are connected to the fastening holes (7) on the corresponding group of conductive strips (3) by conductive fasteners (8) to realize the assembly of PCB board bodies (1) and conductive strips (3), and at the same time realize the electrical connection between PCB board bodies (1) in the same group.

2. The PCB board electrical hard connection structure in a microspace according to claim 1, characterized in that: The insulating component (2) includes an insulating base (21) and an insulating protrusion (22) disposed on the insulating base (21); The conductive strip (3) is mounted on the insulating protrusion (22), and the mounting base (4) is mounted on the side of the insulating base (21) away from the insulating protrusion (22).

3. The PCB board electrical hard connection structure in a microspace according to claim 2, characterized in that: The insulating protrusion (22) is provided with a plurality of positioning grooves (9) that are adapted to the conductive strips (3). The plurality of conductive strips (3) are respectively disposed in the plurality of positioning grooves (9) and are installed and fixed to the insulating protrusion (22) by means of mounting components.

4. The PCB board electrical hard connection structure in a microspace according to claim 3, characterized in that: Both the insulating base (21) and the insulating protrusion (22) are cuboid structures. The width of the insulating protrusion (22) is less than 0.4 times the width of the insulating base (21), and the length is greater than 0.9 times the length of the insulating base (21). The length direction of the insulating protrusion (22) is consistent with the length direction of the insulating base (21), and the center line of the width direction coincides with the center line of the width direction of the insulating base (21). Multiple positioning grooves (9) are arranged along the length direction of the insulating protrusion (22), and there is a gap between two adjacent positioning grooves (9); each conductive strip (3) is arranged perpendicular to the length direction of the insulating protrusion (22), and its middle part is installed in the corresponding positioning groove (9).

5. The PCB board electrical hard connection structure in a microspace according to claim 4, characterized in that: The conductive strip (3) is a rectangular strip, with its middle part mounted on the insulating protrusion (22), and the fastening holes (7) are respectively provided at both ends in the length direction; The number of PCB board bodies (1) is two, and the two PCB board bodies (1) are symmetrically arranged along the central axis of the conductive strip (3) along its length direction.

6. The PCB board electrical hard connection structure in a microspace according to claim 3, characterized in that: The mounting component is a bolt.

7. The PCB board electrical hard connection structure in a microspace according to claim 2, characterized in that: The insulating base (21) has multiple connecting sub-holes (10) on the side away from the insulating protrusion (22), and the mounting base (4) has multiple connecting female holes. The multiple connecting sub-holes (10) and the multiple connecting female holes are arranged one-to-one. The connecting sub-hole (10) on the insulating base (21) and the connecting female hole on the mounting base (4) are connected by a connector.

8. The PCB board electrical hard connection structure in a microspace according to claim 7, characterized in that: The connecting sub-hole (10) is a threaded hole, and the connecting element is a bolt.

9. The PCB board electrical hard connection structure in a microspace according to claim 1, characterized in that: The connecting terminal (6) and the conductive strip (3) are both made of copper.

10. The PCB board electrical hard connection structure in a microspace according to claim 1, characterized in that: The conductive fastener (8) includes a connecting bolt (81) and a rivet nut (82); the rivet nut (82) is disposed on the side of the conductive strip (3) near the insulating part (2) and is coaxially disposed with the fastening hole (7); the connecting bolt (81) passes through the mounting hole (5), the connecting terminal (6) and the fastening hole (7) in sequence and is connected to the rivet nut (82).

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