Fireproof double-sided circuit board

Abstract

The fireproof double-sided circuit board provided by the utility model comprises a circuit board body and a fireproof box, the circuit board body is fixed inside the fireproof box, fireproof layers are arranged on two sides of the circuit board body, fixing sleeves are arranged at two ends of the circuit board body, a heat conducting plate is arranged on the circuit board body and located on the outer side of the fireproof layers, and the heat conducting plate is arranged on the outer side of the fireproof layers. A plurality of heat dissipation fins are arranged on the two faces of the heat conduction plate, the whole fireproof box is of a U-shaped structure, mounting plates are arranged at the four corners of the inner side of the fireproof box, the four corners of the circuit board body are fixedly connected with the mounting plates through bolts, and a plurality of through holes are formed in the bottom of the fireproof box. According to the circuit board, the fireproof layer is pasted on the surface, auxiliary heat dissipation is carried out on the circuit board body through the heat dissipation fins on the heat conduction plate, meanwhile, the double-sided circuit board is located outside through the fixing sleeve, the heat conduction plate and the mounting frame, the double-sided circuit board can be fixed and detached through the bolts, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board production, and specifically relates to a fireproof double-sided circuit board. Background Art

[0002] With the popularization of household electrical appliances, the use of circuit boards is increasing. In the face of household appliances with complex functions, double-sided circuit boards came into being.

[0003] In the relatively closed space inside electronic equipment, most double-sided circuit boards are in direct contact with the equipment without any fire prevention and heat dissipation structure, which causes the circuit boards to accumulate a large amount of heat during long-term operation. When the heat is not dissipated in time, the temperature of the circuit boards will rise, and even the circuit boards will burn and ignite the electronic equipment, causing a fire. In addition, some double-sided circuit boards are wrapped and sealed with fireproof boxes during use to achieve the purpose of fire prevention, but this method is not convenient for installing and disassembling double-sided circuit boards. Utility Model Content

[0004] The technical problem to be solved by the utility model is that most of the double-sided circuit boards currently adopt a structure that is in direct contact with the equipment, which is prone to fire hazards, and it is more troublesome to install and disassemble the double-sided circuit boards using a sealed fireproof box.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a fireproof double-sided circuit board, comprising a circuit board body and a fireproof box, the circuit board body is fixed inside the fireproof box, both sides of the circuit board body are provided with a fireproof layer, both ends of the circuit board body are provided with a fixing sleeve, the circuit board body is provided with a heat conducting plate on the outside of the fireproof layer, both sides of the heat conducting plate are provided with a plurality of cooling fins, the fireproof box is U-shaped as a whole, and mounting plates are provided at the four inner corners of the fireproof box, the four corners of the circuit board body are fixedly connected to the mounting plate by bolts, and the bottom of the fireproof box is provided with a plurality of through holes.

[0006] Furthermore, the fireproof layer is a ceramic fireproof and fire-resistant composite tape adhered to the surface of the circuit board body.

[0007] Furthermore, the fixing sleeve and the heat conducting plate are both made of aluminum material, the fixing sleeve is connected to the two corners of one end of the circuit board body through two triangular connecting sleeves, and the two connecting sleeves are connected by a connecting plate, the connecting plates are located at both ends of the circuit board body, and the width of the connecting plates is the same as the thickness of the connecting sleeve.

[0008] Furthermore, one side of the heat conducting plate is against the fireproof layer, and the side against the fireproof layer matches the shape between the fixing sleeves at both ends. The width of the other side of the heat conducting plate is the same as the width of the circuit board body, and the length is the same as the length of the sleeve outside the circuit board body and the fixing sleeves at both ends.

[0009] Furthermore, the plurality of heat dissipation fins arranged on both sides of the heat conducting plate are arranged alternately.

[0010] Furthermore, the U-shaped structure of the fireproof box is an open structure on both sides where the fixing sleeve is located, and a ventilation cavity is provided between the mounting plate and the bottom of the fireproof box.

[0011] Furthermore, the fireproof box is provided with guide plates on both sides of the U-shaped structure, and the guide plates match the shape of the outer side of the circuit board body and between the fixing sleeves at both ends.

[0012] The advantages of the utility model compared with the prior art are:

[0013] 1. This circuit board can effectively seal and flame retard the circuit board body by sticking a fireproof layer on the surface, and insulate the circuit board body and the heat conducting plate. The heat dissipation fins on the heat conducting plate can assist in heat dissipation of the circuit board body. The circuit board body is suspended and fixed in the air by a suspended erection method to increase the heat dissipation area. At the same time, the circuit board is sealed and flame retardant by sealing from the outside through the fixing sleeve, the heat conducting plate and the mounting frame;

[0014] 2. This circuit board uses an open U-shaped fireproof box with a heat conductive sheet and a fixing sleeve to place the double-sided circuit board on the outside. The double-sided circuit board can be fixed and removed by bolts, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a fireproof double-sided circuit board structure Figure 1 .

[0016] Figure 2 The utility model is a fireproof double-sided circuit board structure Figure 2 .

[0017] Figure 3 The utility model is a cross-sectional three-dimensional structural diagram of a fireproof double-sided circuit board.

[0018] Figure 4 The utility model is an exploded structural diagram of a fireproof double-sided circuit board.

[0019] In the figure:

[0020] 1. Circuit board body; 2. Fireproof box; 3. Fireproof layer; 4. Fixing sleeve; 5. Heat conducting plate; 6. Multiple heat dissipation fins; 7. Mounting plate; 8. Bolts; 9. Multiple through holes; 10. Connecting sleeve; 11. Connecting plate; 12. Ventilation cavity; 13. Guide plate DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] Embodiment 1:

[0024] As the instruction manual Figure 1-4 As shown, a fireproof double-sided circuit board includes a circuit board body 1 and a fireproof box 2. The circuit board body 1 is fixed inside the fireproof box 2. Both sides of the circuit board body 1 are provided with a fireproof layer 3. The fireproof layer 3 is a ceramic fireproof and fire-resistant composite tape pasted on the surface of the circuit board body 1. Both ends of the circuit board body 1 are provided with a fixing sleeve 4. The fixing sleeve 4 is connected to the two corners of one end of the circuit board body 1 through two triangular connecting sleeves 10, and the two connecting sleeves 10 are connected by a connecting plate 11. The connecting plate 11 is located at both ends of the circuit board body 1, and the width of the connecting plate 11 is The thickness is the same as that of the connecting sleeve 10, and a heat conducting plate 5 is arranged on the outside of the fireproof layer 3 of the circuit board body 1. The fixing sleeve 4 and the heat conducting plate 5 are both made of aluminum material. Multiple heat dissipation fins 6 are arranged on both sides of the heat conducting plate 5. The multiple heat dissipation fins 6 arranged on both sides of the heat conducting plate 5 are staggered. One side of the heat conducting plate 5 is against the fireproof layer 3, and the side against the fireproof layer 3 matches the shape between the fixing sleeves 4 at both ends. The width of the other side of the heat conducting plate 5 is the same as the width of the circuit board body 1, and the length is the same as the length of the sleeve arranged outside the circuit board body 1 and the fixing sleeves 4 at both ends.

[0025] In the utility model, the fireproof box 2 is an overall U-shaped structure, and mounting plates 7 are provided at the four inner corners of the fireproof box 2. The U-shaped structure of the fireproof box 2 is an open structure on both sides where the fixing sleeve 4 is located, and a ventilation cavity 12 is provided between the mounting plate 7 and the bottom of the fireproof box 2. The fireproof box 2 is provided with guide plates 13 on both sides of the U-shaped structure, and the guide plates 13 match the shape of the outer side of the circuit board body 1 and the fixing sleeves 4 at both ends. The four corners of the circuit board body 1 are fixedly connected to the mounting plate 7 by bolts 8, and a plurality of through holes 9 are provided at the bottom of the fireproof box 2.

[0026] During the specific implementation of the utility model, the fireproof layer 3 is attached to the two sides of the circuit board body 1 to make the two sides of the circuit board body 1 flame retardant and insulated, and then the fixing sleeve 4 is sleeved from the two sides of the circuit board body 1, and the heat conducting plate 5 is abutted against the outer side of the fixing sleeve 4, and the bolts 8 are passed through the heat conducting plate 5, the fixing sleeve 4 and the circuit board body 1 to connect and fix them, and then the guide plates 13 on both sides of the fireproof box 2 are slidably connected with the gap between the fixing sleeve 4, so that the bottom of the heat conducting plate 5 is abutted against the mounting plate 7 on the inner side of the fireproof box 2, and the installation can be completed by fixing it with the bolts 8 and the mounting plate 7, and the disassembly can be completed by the reverse operation, and the whole process is simple and convenient.

[0027] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A fireproof double-sided circuit board, comprising a circuit board body (1) and a fireproof box (2), wherein the circuit board body (1) is fixed inside the fireproof box (2), characterized in that: Both sides of the circuit board body (1) are provided with fireproof layers (3), both ends of the circuit board body (1) are provided with fixing sleeves (4), the circuit board body (1) is provided with a heat conducting plate (5) on the outside of the fireproof layer (3), and both sides of the heat conducting plate (5) are provided with a plurality of heat dissipation fins (6), the fireproof box (2) is a U-shaped structure as a whole, and the four inner corners of the fireproof box (2) are provided with mounting plates (7), the four corners of the circuit board body (1) are fixedly connected to the mounting plate (7) by bolts (8), and the bottom of the fireproof box (2) is provided with a plurality of through holes (9).

2. A fireproof double-sided circuit board according to claim 1, characterized in that: The fireproof layer (3) is a ceramic fireproof and fire-resistant composite tape adhered to the surface of the circuit board body (1).

3. The fireproof double-sided circuit board according to claim 1, characterized in that: The fixing sleeve (4) and the heat conducting plate (5) are both made of aluminum. The fixing sleeve (4) is connected to the two corners of one end of the circuit board body (1) via two triangular connecting sleeves (10), and the two connecting sleeves (10) are connected via a connecting plate (11). The connecting plates (11) are located at both ends of the circuit board body (1), and the width of the connecting plates (11) is the same as the thickness of the connecting sleeve (10).

4. The fireproof double-sided circuit board according to claim 1, characterized in that: One side of the heat conducting plate (5) abuts against the fireproof layer (3), and the side abutting against the fireproof layer (3) matches the shape of the fixing sleeves (4) at both ends; the other side of the heat conducting plate (5) has the same width as the circuit board body (1), and the same length as the length of the outside of the circuit board body (1) and the fixing sleeves (4) at both ends.

5. The fireproof double-sided circuit board according to claim 1, characterized in that: The plurality of heat dissipation fins (6) arranged on both sides of the heat conducting plate (5) are arranged in a staggered manner.

6. The fireproof double-sided circuit board according to claim 1, characterized in that: The U-shaped structure of the fireproof box (2) is an open structure on both sides where the fixing sleeve (4) is located, and a ventilation cavity (12) is provided between the mounting plate (7) and the bottom of the fireproof box (2).

7. The fireproof double-sided circuit board according to claim 1, characterized in that: The fireproof box (2) is provided with guide plates (13) on both sides of the U-shaped structure, and the guide plates (13) match the shape of the outer side of the circuit board body (1) and between the fixing sleeves (4) at both ends.

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