Anti-fracture PCB circuit board

Abstract

The utility model relates to the technical field of PCBs (printed circuit boards), in particular to an anti-fracture PCB, which comprises a circuit board provided with a plurality of through holes penetrating through the circuit board. A through hole is formed in the circuit board, a sleeve is arranged in the through hole, the bottom of the sleeve extends out of the circuit board, a threaded protrusion is arranged on the outer wall of the bottom of the sleeve, and a bolt is arranged in the sleeve. A connecting frame is arranged below the circuit board, the connecting frame is a strip-shaped supporting plate which is arranged in a crossed mode, the end portion of the supporting plate corresponds to the through hole, a screw hole corresponding to the position of the through hole is formed in the end portion of the connecting frame, and the screw hole corresponds to the threaded protrusion. When the anti-fracture PCB is used, the anti-fracture PCB is connected with the connecting frame through the sleeve to clamp and fix the circuit board, the connecting frame and the sleeve serve as mounting carriers of the bolt, tightening force of the bolt only acts on the sleeve and the connecting frame, and the circuit board cannot be damaged in the fixing process of the bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit boards, in particular to a fracture-resistant PCB circuit board. Background Art

[0002] A PCB circuit board, namely a printed circuit board, is a support for electronic components. Since it is made by electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from small electronic watches and calculators to large computers and communication electronic devices, as long as there are electronic components such as integrated circuits, in order to achieve electrical interconnection between each component, a PCB circuit board is required.

[0003] When using a PCB circuit board, it needs to be fixed in a device, and most PCB circuit boards are fixed by bolts or screws. However, due to the relatively thin thickness of the existing PCB circuit boards, when the bolts are tightened, the bolts will cause extrusion on the surface of the PCB circuit board. Once the extrusion is excessive accidentally, it is very easy to cause cracks in the PCB circuit board, and then the PCB circuit board breaks. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned drawbacks in the prior art, and to provide a fracture-resistant PCB circuit board.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design a fracture-resistant PCB circuit board, including a circuit board, and a plurality of through holes penetrating the circuit board are opened on the circuit board;

[0006] A sleeve is arranged in the through hole, the bottom of the sleeve extends outside the circuit board, and thread protrusions are arranged on the outer wall of the bottom of the sleeve, and a bolt is arranged in the sleeve;

[0007] A connecting frame is arranged below the circuit board. The connecting frame is a cross-shaped and strip-shaped support plate. The end of the support plate corresponds to the through hole, and a screw hole corresponding to the position of the through hole is opened at the end of the connecting frame, and the screw hole corresponds to the thread protrusion.

[0008] Preferably, the circuit board includes a substrate layer, conductive layers are installed on the upper and lower sides of the substrate layer, and a solder pad layer is arranged on the other side of the conductive layer. The solder pad layer is fixed to the conductive layer through an adhesive layer.

[0009] Preferably, a bearing seat is installed along the edge of one end of the sleeve away from the thread protrusion, and the bearing seat is located on the circuit board.

[0010] Preferably, an elastic limit pad is arranged between the bearing seat and the circuit board, and the limit pad is fixed to the bottom of the bearing seat.

[0011] Preferably, elastic first washers are installed on the top of the bearing seat and the bottom of the sleeve.

[0012] Preferably, a reinforcing plate is provided at the end of the connecting frame, and the end of the reinforcing plate is correspondingly connected to the ends of two adjacent support plates.

[0013] Preferably, an elastic second washer is provided above the screw hole, and the second washer is fixed on the connecting frame.

[0014] The beneficial effects of the design scheme proposed by the present utility model in the application process are as follows:

[0015] 1. The anti-fracture PCB circuit board is installed in the through hole of the circuit board through the sleeve, serving as the installation carrier for the bolt. Coupled with the fixation of the sleeve on the connecting frame, the tightening force of the bolt only acts on the sleeve and the connecting frame, preventing the fixation process of the bolt from damaging the circuit board.

[0016] 2. The anti-fracture PCB circuit board is fixed on the back of the circuit board through the connecting frame, which can support the circuit board, enhance the overall strength of the circuit board, and reduce the stress intensity when the circuit board is under pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is an exploded view of the present utility model;

[0019] Figure 3 is a structural diagram of the sleeve of the present utility model;

[0020] Figure 4 is a structural diagram of the back of the circuit board of the present utility model;

[0021] Figure 5 is a structural diagram of the circuit board of the present utility model;

[0022] Figure 6 is a sectional structural diagram of the circuit board of the present utility model.

[0023] In the figure: 1. Circuit board; 2. Through hole; 3. Sleeve; 4. Threaded protrusion; 5. Bearing seat; 6. First washer; 7. Connecting frame; 8. Screw hole; 9. Second washer; 10. Reinforcing plate; 11. Bolt; 12. Substrate layer; 13. Conductive layer; 14. Adhesive layer; 15. Pad layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Referring to Figures 1-6 , a fracture-resistant PCB circuit board includes a circuit board 1. The circuit board 1 includes a substrate layer 12. Conductive layers 13 are installed on the upper and lower sides of the substrate layer 12. A pad layer 15 is provided on the other side of the conductive layer 13. The pad layer 15 is fixed to the conductive layer 13 through an adhesive layer 14. In actual use, the conductive layer 13 is a conductive copper foil, and the adhesive layer 14 is an adhesive, and the pad layer 15 is adhered to the conductive layer 13 through the adhesive.

[0026] As Figure 5 shown, a plurality of through holes 2 penetrating the circuit board 1 are formed in the circuit board 1. As Figure 1 and Figure 2 shown, a sleeve 3 is provided in the through hole 2. A carrier seat 5 is installed along the edge of one end of the sleeve 3 away from the thread protrusion 4. After the sleeve 3 is placed in the through hole 2, the carrier seat 5 is located on the circuit board 1 to ensure the stable placement of the sleeve 3 in the through hole 2; the bottom of the sleeve 3 extends outside the circuit board 1, and a thread protrusion 4 is provided on the outer wall of the bottom of the sleeve 3. A connection frame 7 is provided below the circuit board 1. The connection frame 7 is a cross-shaped and strip-shaped support plate. The end of the support plate corresponds to the through hole 2, and a screw hole 8 corresponding to the position of the through hole 2 is formed at the end of the connection frame 7. The screw hole 8 corresponds to the thread protrusion 4. The connection frame 7 can be placed on one side of the circuit board 1 away from the carrier seat 5, and the sleeve 3 placed in the through hole 2 can be rotated so that its bottom is thread-fixed on the connection frame 7, thereby fixing the sleeve 3 and the connection frame 7 on the circuit board 1.

[0027] Specifically, when installing the circuit board 1, first place the connection frame 7 on the back of the circuit board 1 and align the screw hole 8 on the connection frame 7 with the through hole 2. Then take the sleeve 3 and pass it through the through hole 2 and rotate it so that the sleeve 3 can be fastened to the connection frame 7. At this time, the circuit board 1 will be clamped and fixed between the carrier seat 5 and the connection frame 7. Since a bolt 11 is also provided in the sleeve 3, the bolt 11 can be taken at this time to fix the circuit board 1 in the required installation equipment. During the tightening process of the bolt 11, due to the action of the bolt head of the bolt 11 on the top of the sleeve 3 and the carrier seat 5, the force applied by the rotation of the bolt 11 will all act on the sleeve 3 and the connection frame 7, and no force will act on the circuit board 1. Therefore, the circuit board 1 can be protected to prevent the circuit board 1 from being broken due to the installation force.

[0028] It should be noted that when installing between the sleeve 3 and the connecting frame 7, an elastic limit pad is provided between the bearing seat 5 and the circuit board 1. The limit pad is a rubber pad and is fixed on the bottom of the bearing seat 5. In addition, the thread protrusion 4 is only provided at the end position of the sleeve 3, so that the sleeve 3 has sufficient space for placing the circuit board 1. With the cooperation of the contact between the limit pad and the circuit board 1, when the sleeve 3 is fixed to the connecting frame 7, it will not squeeze the circuit board 1, ensuring the integrity of the circuit board 1.

[0029] Furthermore, as shown in Figure 2 and Figure 3 , elastic first washers 6 are installed on the top of the bearing seat 5 and the bottom of the sleeve 3; an elastic second washer 9 is provided above the screw hole 8, and the second washer 9 is fixed on the connecting frame 7. During the process of placing the connecting frame 7 in the installation position and fixing it with the bolt 11, as the bolt 11 is screwed, the washers will provide a reverse force to the bolt 11 and the installation equipment, enabling the bolt 11 to achieve a tensioning effect, thereby improving the installation stability of the bolt 11 for the connecting frame 7 and the circuit board 1.

[0030] In order to improve the supporting effect of the connecting frame 7 on the circuit board 1, as shown in Figure 2 and Figure 4 , a reinforcing plate 10 is provided at the end of the connecting frame 7, and the end of the reinforcing plate 10 is correspondingly connected to the ends of two adjacent support plates to provide support for the connecting frame 7, thereby strengthening the supporting strength of the connecting frame 7. At the same time, it also increases the supporting coverage area of the connecting frame 7 for the circuit board 1. When the circuit board 1 has a tendency to bend under external force, it can be supported and blocked by the connecting frame 7, ensuring that the circuit board 1 will not be bent and broken due to external force.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An anti-fracture PCB circuit board, characterized in that: It includes a circuit board (1), and a number of through holes (2) penetrating the circuit board (1) are formed in the circuit board (1). A sleeve (3) is arranged in the through hole (2), the bottom of the sleeve (3) extends outside the circuit board (1), and thread protrusions (4) are formed on the outer wall of the bottom of the sleeve (3), and a bolt (11) is arranged in the sleeve (3). A connecting frame (7) is arranged below the circuit board (1). The connecting frame (7) is a cross-shaped and strip-shaped support plate, the end of the support plate corresponds to the through hole (2), and a screw hole (8) corresponding to the position of the through hole (2) is formed in the end of the connecting frame (7), and the screw hole (8) corresponds to the thread protrusion (4).

2. The anti-fracture PCB circuit board according to claim 1, wherein: The circuit board (1) includes a substrate layer (12), conductive layers (13) are installed on the upper and lower sides of the substrate layer (12), and a pad layer (15) is arranged on the other side of the conductive layer (13), and the pad layer (15) is fixed to the conductive layer (13) through an adhesive layer (14).

3. The anti-fracture PCB circuit board according to claim 1, characterized in that: A bearing seat (5) is installed along the edge of one end of the sleeve (3) away from the thread protrusion (4), and the bearing seat (5) is located on the circuit board (1).

4. A fracture-resistant PCB circuit board according to claim 1, characterized in that: An elastic limit pad is arranged between the bearing seat (5) and the circuit board (1), and the limit pad is fixed on the bottom of the bearing seat (5).

5. A fracture-resistant PCB circuit board according to claim 1, characterized in that: Elastic first washers (6) are installed on the top of the bearing seat (5) and the bottom of the sleeve (3).

6. A fracture-resistant PCB circuit board according to claim 1, characterized in that: A reinforcing plate (10) is arranged at the end of the connecting frame (7), and the end of the reinforcing plate (10) is correspondingly connected to the ends of two adjacent support plates.

7. An anti-fracture PCB circuit board according to claim 1, characterized in that: An elastic second washer (9) is arranged above the screw hole (8), and the second washer (9) is fixed on the connecting frame (7).

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