A metal single-sided multi-layer circuit board

Abstract

This utility model relates to the field of circuit board technology, specifically to a single-sided multilayer metal circuit board, comprising a circuit board body, a heat sink plate mounted on one side of the circuit board body, a protective plate mounted on one side of the heat sink plate, a placement groove inside the protective plate, and a vent plate attached to the side of the protective plate away from the heat sink plate via a fixing mechanism. Multiple sets of vent holes are arranged on the vent plate. An absorbent sponge, which is attached to one side of the vent plate and the heat sink plate, is engaged inside the placement groove. The fixing mechanism includes a docking component and a positioning component. The docking component includes a fixing plate. A fixing groove is formed on one side of the protective plate located on the side of the placement groove, and the fixing plate is engaged inside the fixing groove. This utility model has a simple structure and is easy to operate. Assembly and disassembly can be completed by workers using pressure and rotation, facilitating the replacement of absorbent sponges with significantly reduced absorbency and ensuring subsequent waterproofing effects.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a metal single-sided multi-layer circuit board. Background Art

[0002] At present, single-sided circuit boards only have circuits on one side of the circuit board body. Single-sided circuit boards mainly include a substrate layer, a copper film conductor layer, and a solder mask layer. Single-sided circuit boards are mostly used in home appliances such as radios, heaters, refrigerators, washing machines, and commercial machines such as printers, vending machines, circuit machines, and electronic components. They are relatively cheap.

[0003] In order to solve the above technical problems, a Chinese patent with announcement number CN212305760U in the prior art discloses a single-sided circuit board, including a circuit board body: an insulating heat-conducting layer is fixedly provided on the circuit board body: a plurality of heat dissipation cavities are evenly distributed on the insulating heat-conducting layer along its length direction: a heat sink is fixedly provided in the heat dissipation cavity: a water-absorbing sponge layer is connected to the upper surface of the insulating heat-conducting layer: and color-changing silica gel is provided on the upper surface of the water-absorbing sponge layer.

[0004] Although the above-mentioned prior art solution improves the overall waterproofness, the water absorption of the absorbent sponge will continue to decrease with long-term use, and the upper and lower layers of the absorbent sponge are fixedly connected to the color-changing silica gel and the insulating thermal conductive layer respectively, which is not convenient for public personnel to disassemble and replace the new absorbent sponge, thereby affecting the subsequent waterproofness. Utility Model Content

[0005] The purpose of the utility model is to provide a metal single-sided multi-layer circuit board to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A metal single-sided multi-layer circuit board comprises a circuit board body, a heat sink is installed on one side of the circuit board body, a protective plate is installed on one side of the heat sink, a placement groove is provided inside the protective plate, a side of the protective plate away from the heat sink is clamped with a breathable plate through a fixing mechanism, a plurality of groups of breathable holes are arranged on the breathable plate, a water-absorbing sponge that is attached to the breathable plate and one side of the heat sink is clamped on the inner side of the placement groove, the fixing mechanism comprises a docking component and a positioning component, the docking component comprises a fixing plate, a fixing groove is provided on one side of the protective plate located at the placement groove, the fixing plate is clamped and connected to the inner side of the fixing groove, one end of the fixing plate is fixedly connected to the breathable plate, a mounting rod is slidably connected inside the fixing plate, an extension groove is provided on one side of the fixing plate, a torsion ring is rotatably connected to the top end of the mounting rod, a movable groove is provided inside the fixing plate located outside the mounting rod, a movable disk slidably connected to the movable groove is installed on the outer side of the mounting rod, two groups of pressure springs are arranged and installed on one side of the movable disk, a clamping block is installed on one end of the mounting rod extending to the outside of the fixing plate, and a positioning block is installed on one end of the clamping block.

[0008] As a preferred solution of the utility model, the positioning assembly includes a rotating seat, a mounting groove is provided on one side of the interior of the protective plate, the rotating seat is rotatably connected to the inner side of the mounting groove, springs are installed at both ends of the top of the rotating seat, a top plate is installed at the top of the spring, a positioning groove is provided on the top of the top plate and is engaged with the positioning block, a docking groove extending to the inner side of the mounting groove is provided inside the protective plate, and clamping grooves are provided at both ends of the interior of the protective plate on one side of the mounting groove, and the clamping grooves are engaged with the clamping block.

[0009] As a preferred solution of the present utility model, the cross section of the clamping block is "U"-shaped.

[0010] As a preferred solution of the utility model, the outer sides of the fixing plate and the breathable plate are sleeved with sealing strips that fit with the inner walls of the fixing groove and the placement groove.

[0011] As a preferred solution of the utility model, a cover plate is hingedly connected to the extension groove on the top of the fixing plate through a hinge, a first fixing piece is embedded and installed at one end of the cover plate, and a second fixing piece corresponding to the first fixing piece is installed on the inner wall of the extension groove.

[0012] As a preferred solution of the utility model, one of the first fixing member and the second fixing member is a first magnet, and the other of the first fixing member and the second fixing member is a second magnet, and the magnetic poles of the first magnet and the second magnet are opposite and attract each other.

[0013] As a preferred solution of the utility model, a buckle groove is provided on one side of the cover plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the clamping block at the bottom of the fixing plate is aligned with the docking groove and inserted into it, and then the torsion ring is buckled to push the installation rod inward, and the positioning block and the positioning groove can be used to squeeze the top plate, the pressure spring and the spring downward, and then the rotating seat is driven to rotate, and the clamping block is rotated to the horizontal direction and then the torsion ring is released so that the two ends of the clamping block are inserted into the inner side of the clamping groove to complete the fixation. When disassembling, the torsion ring is held to push the installation rod to squeeze the top plate, and the clamping block is rotated to the longitudinal direction and then released to be pulled out of the docking groove to complete the disassembly. The structure is simple and the operation is convenient. The staff can complete the assembly and disassembly by pressing and rotating operations, which is convenient for the staff to replace the water-absorbing sponge with greatly reduced water absorption, thereby ensuring the subsequent waterproof effect.

[0016] 2. In the utility model, the cover plate is rotated by buckling the pull groove so that the cover plate and the extension groove are closed. At the same time, the first fixing member and the second fixing member are also fitted together. The two are magnetically attracted to each other, and the torsion ring is covered on the inner side of the extension groove to prevent it from being accidentally pressed down and twisted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the fixing mechanism of the utility model.

[0020] In the figure: 1. circuit board body; 2. heat sink; 3. protective plate; 4. breathable plate; 5. water-absorbing sponge; 6. fixing plate; 7. mounting rod; 8. extension groove; 9. torsion ring; 10. movable disk; 11. pressure spring; 12. clamping block; 13. positioning block; 14. rotating seat; 15. mounting groove; 16. top plate; 17. docking groove; 18. sealing strip; 19. cover plate; 20. first fixing member. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0024] A metal single-sided multi-layer circuit board, comprising a circuit board body 1, a heat sink 2 is installed on one side of the circuit board body 1, a protective plate 3 is installed on one side of the heat sink 2, a placement groove is provided inside the protective plate 3, a side of the protective plate 3 away from the heat sink 2 is clamped with a breathable plate 4 through a fixing mechanism, a plurality of groups of breathable holes are arranged on the breathable plate 4, a water-absorbing sponge 5 that is in contact with the breathable plate 4 and one side of the heat sink 2 is clamped inside the placement groove, the fixing mechanism comprises a docking component and a positioning component, the docking component comprises a fixing plate 6, a fixing groove is provided on one side of the protective plate 3 located on the side of the placement groove, and the fixing plate 6 is clamped and connected to the fixing Inside the groove, one end of the fixed plate 6 is fixedly connected to the breathable plate 4, a mounting rod 7 is slidably connected inside the fixed plate 6, an extension groove 8 is provided on one side of the fixed plate 6, a torsion ring 9 is rotatably connected to the top of the mounting rod 7, a movable groove is provided inside the fixed plate 6 on the outside of the mounting rod 7, a movable disk 10 slidably connected to the movable groove is installed on the outside of the mounting rod 7, two groups of pressure springs 11 are arranged and installed on one side of the movable disk 10, a clamping block 12 is installed on one end of the mounting rod 7 extending to the outside of the fixed plate 6, a positioning block 13 is installed on one end of the clamping block 12, and the positioning assembly includes a rotating seat 14, and a mounting assembly is provided on one side of the protective plate 3 The rotating seat 14 is rotatably connected to the inner side of the mounting groove 15. Springs are installed at both ends of the top of the rotating seat 14. A top plate 16 is installed at the top of the spring. A positioning groove is provided at the top of the top plate 16 to be engaged with the positioning block 13. A docking groove 17 extending to the inner side of the mounting groove 15 is provided inside the protective plate 3. Both ends of the protective plate 3 located on one side of the mounting groove 15 are provided with a card slot, and the card slot is engaged with the card block 12. The cross section of the card block 12 is "U"-shaped. When using the device, the card block 12 at the bottom of the fixed plate 6 can be aligned with the docking groove 17 and then buckled to push the installation inward by holding the torsion ring 9. The mounting rod 7, in cooperation with the positioning block 13 and the positioning groove, can squeeze the top plate 16, the pressure spring 11 and the spring downward, and then drive the rotating seat 14 to rotate. After the clamping block 12 is rotated to the horizontal direction, the twisting ring 9 is loosened so that the two ends of the clamping block 12 are clamped into the inner side of the clamping groove to complete the fixation. When disassembling, hold the twisting ring 9 to push the mounting rod 7 to squeeze the top plate 16. After the clamping block 12 is rotated to the longitudinal direction, it can be loosened to pull it out of the docking groove 17 to complete the disassembly. The structure is simple and the operation is convenient. The staff can complete the assembly and disassembly by pressing and turning operations, which is convenient for the staff to replace the water-absorbing sponge 5 whose water absorption is greatly reduced, thereby ensuring the subsequent waterproof effect.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, the outer sides of the fixing plate 6 and the breathable plate 4 are sleeved with a sealing strip 18 that fits with the inner walls of the fixing groove and the placement groove. A cover plate 19 that is snap-fitted with the extension groove 8 is hinged on the top of the fixing plate 6 through a hinge. A first fixing piece 20 is embedded and installed at one end of the cover plate 19. A second fixing piece corresponding to the first fixing piece 20 is installed on the inner wall of the extension groove 8. One of the first fixing piece 20 and the second fixing piece is a first magnet, and the other of the first fixing piece 20 and the second fixing piece is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other. A buckle groove is provided on one side of the cover plate 19. The cover plate 19 is buckled and rotated through the buckle groove so that the cover plate 19 is closed with the extension groove 8. At the same time, the first fixing piece 20 and the second fixing piece are also fitted together. The two are magnetically attracted to each other, and the torsion ring 9 is covered on the inner side of the extension groove 8 to prevent it from being accidentally touched, pressed down and twisted.

[0026] The implementation principle of a metal single-sided multi-layer circuit board in the embodiment of the present application is as follows: when the device is in use, the block 12 at the bottom of the fixing plate 6 can be aligned with the docking groove 17 and inserted into it, and then the torsion ring 9 can be buckled to push the installation rod 7 inward, and the positioning block 13 and the positioning groove can be used to squeeze the top plate 16, the pressure spring 11 and the spring downward, and then the rotating seat 14 can be driven to rotate, and after the block 12 is rotated to the horizontal direction, the torsion ring 9 is released to make the two ends of the block 12 inserted into the inner side of the slot to complete the fixation. When disassembling, hold the torsion ring 9 to push the installation rod 7 to squeeze the top plate 16, and then After the block 12 is rotated to the longitudinal direction and released, it can be pulled out from the docking groove 17 to complete the disassembly. The structure is simple and the operation is convenient. The staff can complete the assembly and disassembly by pressing and turning operations, which is convenient for personnel to replace the absorbent sponge 5 whose water absorption is greatly reduced, ensuring the subsequent waterproof effect. The cover plate 19 is buckled by the buckle groove and rotated to close the cover plate 19 and the extension groove 8. At the same time, the first fixing member 20 and the second fixing member are also fitted together. The two are magnetically attracted to each other, and the torsion ring 9 is covered on the inner side of the extension groove 8 to prevent it from being accidentally pressed down and twisted.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal single-sided multi-layer circuit board, comprising a circuit board body (1), characterized in that: A heat sink (2) is installed on one side of the circuit board body (1), a protective plate (3) is installed on one side of the heat sink (2), a placement groove is provided inside the protective plate (3), a side of the protective plate (3) away from the heat sink (2) is clamped with a breathable plate (4) through a fixing mechanism, a plurality of groups of breathable holes are arranged on the breathable plate (4), a water-absorbing sponge (5) that is in contact with the breathable plate (4) and one side of the heat sink (2) is clamped inside the placement groove, the fixing mechanism comprises a docking assembly and a positioning assembly, the docking assembly comprises a fixing plate (6), a fixing groove is provided on one side of the protective plate (3) located on the side of the placement groove, and the fixing plate (6) is clamped and connected to the fixing groove On the inner side, one end of the fixed plate (6) is fixedly connected to the air-permeable plate (4), a mounting rod (7) is slidably connected inside the fixed plate (6), an extension groove (8) is provided on one side of the fixed plate (6), a torsion ring (9) is rotatably connected to the top of the mounting rod (7), a movable groove is provided inside the fixed plate (6) and is located outside the mounting rod (7), a movable disk (10) slidably connected to the movable groove is installed on the outside of the mounting rod (7), two groups of pressure springs (11) are arranged on one side of the movable disk (10), a clamping block (12) is installed on one end of the mounting rod (7) extending to the outside of the fixed plate (6), and a positioning block (13) is installed on one end of the clamping block (12).

2. The metal single-sided multi-layer circuit board according to claim 1, characterized in that: The positioning assembly comprises a rotating seat (14), a mounting groove (15) is provided on one side of the interior of the protective plate (3), the rotating seat (14) is rotatably connected to the inner side of the mounting groove (15), springs are installed at both ends of the top of the rotating seat (14), a top plate (16) is installed at the top of the spring, a positioning groove is provided at the top of the top plate (16) and is snap-fitted with the positioning block (13), a docking groove (17) is provided inside the protective plate (3) and extends to the inner side of the mounting groove (15), and a clamping groove is provided at both ends of the interior of the protective plate (3) located on one side of the mounting groove (15), and the clamping groove is snap-fitted with the clamping block (12).

3. The metal single-sided multi-layer circuit board according to claim 1, characterized in that: The cross section of the block (12) is U-shaped.

4. The metal single-sided multi-layer circuit board according to claim 2, characterized in that: The outer sides of the fixing plate (6) and the air-permeable plate (4) are sleeved with sealing strips (18) that fit the inner walls of the fixing groove and the placement groove.

5. The metal single-sided multi-layer circuit board according to claim 1, characterized in that: A cover plate (19) is hingedly connected to the top of the fixing plate (6) through a hinge and is snap-connected to the extension groove (8); a first fixing member (20) is embedded and installed at one end of the cover plate (19); and a second fixing member corresponding to the first fixing member (20) is installed on the inner wall of the extension groove (8).

6. The metal single-sided multi-layer circuit board according to claim 5, characterized in that: One of the first fixing member (20) and the second fixing member is a first magnet, and the other of the first fixing member (20) and the second fixing member is a second magnet. The magnetic poles of the first magnet and the second magnet are opposite and attract each other.

7. The metal single-sided multi-layer circuit board according to claim 5, characterized in that: A buckle groove is provided on one side of the cover plate (19).

Images