Embedded copper block structure with high stability

Abstract

The utility model provides an embedded copper block structure with high stability, which relates to the technical field of PCB (printed circuit board) manufacturing, and comprises a core board, an embedded copper groove and a copper block body, the copper block body is embedded in the embedded copper groove, a plurality of hanging lugs are arranged at the joint of the copper block body and the core board, the hanging lugs extend outwards from the side edge of the copper block body and are embedded in the core board, and the embedded copper block body is embedded in the core board. The mechanical bonding force between the copper block body and the core plate is enhanced. The hanging lug is arranged at the joint of the copper block body and the core plate, the hanging lug is embedded into the core plate to form a mechanical locking structure, the bonding strength of the copper block and the core plate is remarkably improved, the problems that the copper block is loosened and falls off and the joint cracks under the pressing or external force action are effectively solved, and the resin adhesive layer is filled in the gap between the hanging lug and the copper embedding groove, so that the service life of the copper block is prolonged. A resin anchoring layer is formed after hot-pressing curing, the mechanical locking effect of the hanging lugs is combined, the combination stability of the copper block and the core plate is doubly enhanced, and thermal stress and external impact are buffered.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, and in particular to a highly stable embedded copper block structure. Background Technology

[0002] PCB fabrication is a crucial process for achieving electrical connections and physical support for electronic components. In modern electronic devices, with increasing functional integration, the performance requirements for PCBs are becoming increasingly stringent. To meet demands for heat dissipation and high-power signal transmission, copper blocks are often embedded in the PCB. Copper has excellent thermal and electrical conductivity, effectively dissipating the heat generated by electronic components, ensuring stable operation of electronic devices, and guaranteeing reliable transmission of high-speed signals.

[0003] In existing technologies, when embedding copper blocks into the copper embedding grooves of PCB core boards, the bonding strength between the copper blocks and the core board is insufficient. Most methods rely on simple embedding, and during subsequent PCB board lamination, due to pressure and temperature changes, the copper blocks are prone to loosening and falling off, resulting in cracks at the joint. This not only affects the mechanical stability of the PCB board, but may also cause open circuits or short circuits in the connection between electronic components and the copper blocks due to copper block displacement, seriously affecting the normal operation of electronic equipment. Therefore, it is urgent to develop a highly stable embedded copper block structure to improve PCB board performance and meet the high reliability requirements of modern electronic equipment. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the bonding strength between the copper block and the core board is insufficient in the existing technology. During the subsequent PCB board lamination process, the copper block is prone to loosening and falling off due to pressure and temperature changes, resulting in cracks at the joint. Therefore, a highly stable embedded copper block structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a highly stable embedded copper block structure, comprising a core plate, an embedded copper groove, and a copper block body. The copper block body is embedded inside the embedded copper groove. Multiple hanging ears are provided at the joint between the copper block body and the core plate. The hanging ears extend outward from the side of the copper block body and are embedded in the core plate to enhance the mechanical bonding force between the copper block body and the core plate.

[0006] Preferably, the lugs are trapezoidal or rectangular protrusions that are evenly distributed on the four sides of the copper block body.

[0007] Preferably, a gap is reserved between the hanging ear and the copper embedding groove, and the gap is filled with a resin adhesive layer.

[0008] Preferably, the thickness of the lug is less than the thickness of the copper block body, and the top of the lug is flush with the surface of the core board.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] 1. In this utility model, by setting a hanging ear at the joint between the copper block body and the core plate, the hanging ear is embedded in the core plate to form a mechanical locking structure, which significantly improves the joint strength between the copper block and the core plate, effectively preventing the copper block from loosening, falling off, and cracking at the joint under pressure or external force. Furthermore, the gap between the hanging ear and the copper embedding groove is filled with a resin adhesive layer, which forms a resin anchoring layer after hot pressing and curing. Combined with the mechanical locking effect of the hanging ear, the joint stability between the copper block and the core plate is doubly enhanced, buffering thermal stress and external impact. Attached Figure Description

[0011] Figure 1 This invention presents a top view of a copper block structure with high stability.

[0012] Illustration: 1. Core board; 2. Copper embedding channel; 3. Copper block body; 4. Hanging lug. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Example 1: As Figure 1 As shown, this utility model provides a technical solution: a highly stable embedded copper block structure, including a core plate 1, an embedded copper groove 2, and a copper block body 3. The copper block body 3 is embedded inside the embedded copper groove 2. Multiple hanging ears 4 are provided at the joint between the copper block body 3 and the core plate 1. The hanging ears 4 extend outward from the side of the copper block body 3 and are embedded in the core plate 1 to enhance the mechanical bonding force between the copper block body 3 and the core plate 1. The hanging ears 4 are trapezoidal or rectangular protrusions, evenly distributed on the four sides of the copper block body 3. A gap is reserved between the hanging ears 4 and the embedded copper groove 2, and the gap is filled with a resin adhesive layer. The thickness of the hanging ears 4 is less than the thickness of the copper block body 3, and the top of the hanging ears 4 is flush with the surface of the core plate 1.

[0016] In this embodiment, by setting a lug 4 at the joint between the copper block body 3 and the core plate 1, the lug 4 is embedded in the core plate 1 to form a mechanical locking structure, which significantly improves the joint strength between the copper block and the core plate 1, effectively preventing the copper block from loosening or falling off under pressure or external force, as well as cracks at the joint. Furthermore, the gap between the lug 4 and the copper embedding groove 2 is filled with a resin adhesive layer, which forms a resin anchoring layer after hot pressing and curing. Combined with the mechanical locking effect of the lug 4, the joint stability between the copper block and the core plate 1 is doubly enhanced, buffering thermal stress and external impact.

[0017] The working principle of this embodiment is as follows: When constructing this highly stable embedded copper block structure, firstly, a core plate 1 with an embedded copper groove 2 and a copper block body 3 are prepared. Then, the copper block body 3 is embedded in the embedded copper groove 2. Since the copper block body 3 has evenly distributed hanging ears 4 extending outward from the sides, these hanging ears 4 are trapezoidal or rectangular protrusions. When embedded in the core plate 1, a preliminary mechanical locking structure is formed, which enhances the bonding strength between the copper block body 3 and the core plate 1. A gap is reserved between the hanging ears 4 and the embedded copper groove 2. Then, resin glue is filled into the gap. After filling, a hot pressing operation is performed. During this process, the resin glue is cured by heat to form a resin anchoring layer. Hot pressing not only promotes the curing of the resin glue, but also makes the bonding between the hanging ears 4 and the core plate 1 tighter. Finally, the mechanical locking effect of the hanging ears 4 and the resin anchoring layer work together to doubly enhance the bonding stability between the copper block and the core plate 1. In subsequent use, it can effectively resist the influence caused by pressing or external force, buffer thermal stress and external impact, and ensure the stable operation of the embedded copper block structure.

[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A highly stable embedded copper block structure, comprising a core plate (1), an embedded copper groove (2), and a copper block body (3), characterized in that: The copper block body (3) is embedded inside the copper immersion groove (2). Multiple hanging ears (4) are provided at the joint between the copper block body (3) and the core plate (1). The hanging ears (4) extend outward from the side of the copper block body (3) and are embedded in the core plate (1) to enhance the mechanical bonding force between the copper block body (3) and the core plate (1).

2. The highly stable embedded copper block structure according to claim 1, characterized in that: The lugs (4) are trapezoidal or rectangular protrusions that are evenly distributed on the four sides of the copper block body (3).

3. The highly stable embedded copper block structure according to claim 1, characterized in that: A gap is reserved between the hanging ear (4) and the copper trough (2), and the gap is filled with a resin adhesive layer.

4. The highly stable embedded copper block structure according to claim 1, characterized in that: The thickness of the lug (4) is less than the thickness of the copper block body (3), and the top of the lug (4) is flush with the surface of the core plate (1).

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