Extensible circuit board

Abstract

The utility model discloses an extensible circuit board, which relates to the technical field of circuit boards and comprises a circuit board body, a CPU (central processing unit) mounting mechanism is welded at the top of the circuit board body, an extension mechanism is inserted at one end of the circuit board body, the circuit board body comprises a board body, a welding spot is fixedly connected at the top of the board body, a component is welded on the surface of the welding spot, and the extension mechanism is inserted in the circuit board body. A mounting hole is formed in the surface of one end of the plate body. According to the utility model, through a connection mode of plugging expansion, the spring tightly presses the contact piece to the surface of the electrical connection point on the surface of the plugging part, so that the electrical connection between the expansion board and the circuit board is more stable, the condition of poor contact is not easy to occur, and in the process of assembling the expansion board, the product quality is improved. The reinforcing rods are additionally arranged on the two sides of the expansion board and the circuit board, so that the strength of the joint of the circuit board and the expansion board is enhanced, the expansion circuit board is prevented from being broken from the joint when being extruded by external force, and the expansion board is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to an expandable circuit board. Background Art

[0002] Circuit boards are an indispensable key component in modern electronic devices. They are made of conductive materials, such as copper foil, and are formed into circuit patterns through processes such as etching. Circuit boards provide a platform for the installation and connection of various electronic components, enabling them to work together to achieve specific functions of electronic devices. The design and manufacture of circuit boards require precise technology and strict quality control. Its performance directly affects the stability, reliability and performance of the entire electronic device. In the development of electronic products, circuit boards continue to evolve and innovate to meet the increasingly complex functional requirements. At present, in order to meet the needs of electronic equipment, an expandable circuit board has appeared on the market.

[0003] For example, the Chinese patent with the announcement number CN115915592A discloses an expandable circuit board, including a main circuit board, a first connection seat is symmetrically installed on the top of the main circuit board, a first connection seat is installed between two groups of the first connection seats, a plug is installed on one side of the first connection seat, a docking groove is movably installed on the outer side of the plug, and a second connection seat is installed on one side of the docking groove. The present invention is installed with an embedding groove and an expansion circuit board. When the area of ​​the circuit board needs to be expanded, the user pulls the expansion circuit board to move inside the embedding groove as needed to adjust the area of ​​the circuit board. The connection hole is installed on the electronic device through the mounting piece. After the adjustment is completed, the user turns and tightens the screws or uses plastic-sealed rivets or metal fillings to fix the expansion circuit board to ensure the stability of the expansion circuit board, which is convenient for the user to adjust the specifications of the circuit board to adapt to electrical appliances of different sizes.

[0004] Although the above example can expand the overall area of ​​the circuit board by pulling the expansion board to slide in the fitting groove when the circuit board needs to be expanded, the electrical connection between the freely movable expansion board and the circuit board is poor. When in use, the internal circuit of the circuit board is prone to poor contact and thus operation errors occur, which is inconvenient to use. At the same time, the connection between the existing expansion board and the circuit board is weak in strength. When the circuit board is squeezed by external force, it is easy to cause the circuit board to break at the connection, which is inconvenient to use. Utility Model Content

[0005] The utility model provides an expandable circuit board to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An expandable circuit board comprises a circuit board, a CPU mounting mechanism is welded on the top of the circuit board, and an expansion mechanism is plugged into one end of the circuit board.

[0008] A further improvement of the technical solution of the utility model is that the circuit board comprises a board body, a soldering point is fixedly connected to the top of the board body, components are soldered to the surface of the soldering point, and a mounting hole is opened on the surface of one end of the board body.

[0009] A further improvement of the technical solution of the utility model is that: an insertion groove is opened at one end of the plate body away from the mounting hole, a guide rod is inserted into the inner wall of the insertion groove, a spring is movably sleeved on the surface of the guide rod, one end of the spring is fixedly connected to the inner wall of the insertion groove, one end of the guide rod is fixedly connected to a pressure plate, and the side of the pressure plate close to the guide rod is fixedly connected to the side of the spring away from the inner wall of the insertion groove.

[0010] A further improvement of the technical solution of the utility model is that: a wire is fixedly connected to one side of the pressure plate close to the spring, a contact piece is fixedly connected to one end of the wire, a side of the contact piece close to the wire is overlapped with one side of the pressure plate, and a reinforcing sleeve is fixedly connected to the surface of the plate body.

[0011] A further improvement of the technical solution of the utility model is that the CPU installation mechanism includes a mounting box, the bottom of the mounting box is welded to the top of the welding point, a mounting groove is arranged inside the mounting box, a contact is arranged on the inner wall of the mounting groove, the inner wall of the mounting groove is overlapped with the CPU, and the top of the CPU is overlapped with a sealing aluminum plate.

[0012] A further improvement of the technical solution of the utility model is that: a box cover is rotatably connected to one side of the top of the installation box, an air blowing assembly is fixedly connected to the inner wall of the box cover, and a dust cover is fixedly connected to one side of the box cover.

[0013] A further improvement of the technical solution of the utility model is that: the expansion mechanism includes an expansion plate, a plug-in portion is provided on one side of the expansion plate, the surface of the plug-in portion is plugged into the interior of the plug-in slot, one side of the plug-in portion overlaps with a side of the contact piece away from the pressure plate, two sides of the expansion plate are fixedly connected with a reinforcing sleeve 2, and an electrical connection point is provided on the plug-in portion at the position corresponding to the contact piece.

[0014] A further improvement of the technical solution of the utility model is that a reinforcing rod is inserted into the inner wall of the reinforcing sleeve 2, one end of the reinforcing rod is fixedly connected to the limiting block 1, and the other end of the reinforcing rod is inserted into the limiting block 2.

[0015] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0016] The utility model provides an expandable circuit board, which uses a plug-in expansion connection method to enable a spring to press a contact piece tightly to the surface of an electrical connection point on the surface of a plug-in portion, thereby making the electrical connection between the expansion board and the circuit board more stable and less prone to poor contact. In addition, during the process of assembling the expansion board, reinforcing rods are provided on both sides of the expansion board and the circuit board to strengthen the strength of the connection between the circuit board and the expansion board, thereby preventing the expandable circuit board from breaking at the connection when being squeezed by an external force, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the CPU installation mechanism structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the CPU installation mechanism of the present utility model;

[0021] Figure 5 For the utility model Figure 2 A is an enlarged schematic diagram of the structure.

[0022] In the figure: 1. circuit board; 11. board body; 12. solder joint; 13. components; 14. mounting hole; 15. plug-in slot; 16. guide rod; 17. spring; 18. pressure plate; 19. wire; 110. contact piece; 111. reinforcement sleeve 1; 2. CPU mounting mechanism; 21. mounting box; 22. mounting slot; 23. contact; 24. CPU; 25. sealing aluminum plate; 26. box cover; 27. blower assembly; 28. dust cover; 3. expansion mechanism; 31. expansion board; 32. plug-in part; 33. reinforcement sleeve 2; 34. reinforcement rod; 35. limit block 1; 36. limit block 2. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the embodiments:

[0024] Example 1

[0025] like Figure 1-5As shown, the utility model provides an expandable circuit board, including a circuit board 1, a CPU mounting mechanism 2 is welded on the top of the circuit board 1, an expansion mechanism 3 is plugged into one end of the circuit board 1, the circuit board 1 includes a board body 11, a solder joint 12 is fixedly connected to the top of the board body 11, a component 13 is welded on the surface of the solder joint 12, a mounting hole 14 is opened on the surface of one end of the board body 11, an insertion groove 15 is opened on the end of the board body 11 away from the mounting hole 14, a guide rod 16 is plugged into the inner wall of the insertion groove 15, and the guide rod 16 is inserted into the inner wall of the guide rod 16. A spring 17 is movably sleeved on the surface, one end of the spring 17 is fixedly connected to the inner wall of the plug-in slot 15, one end of the guide rod 16 is fixedly connected to a pressure plate 18, the side of the pressure plate 18 close to the guide rod 16 is fixedly connected to the side of the spring 17 away from the inner wall of the plug-in slot 15, the side of the pressure plate 18 close to the spring 17 is fixedly connected to a wire 19, one end of the wire 19 is fixedly connected to a contact piece 110, the side of the contact piece 110 close to the wire 19 is overlapped with one side of the pressure plate 18, and a reinforcing sleeve 111 is fixedly connected to the surface of the plate body 11.

[0026] In this embodiment, when the circuit board 1 is expanded, the plug-in portion 32 on one side of the expansion board 31 is inserted into one end of the circuit board 1 along the plug-in slot 15. During the plug-in process, the plug-in portion 32 pushes the pressure plate 18 to move toward the inner wall of the plug-in slot 15, so that the pressure plate 18 pushes the spring 17 to contract. At the same time, the guide rod 16 is inserted into the inner wall of the plug-in slot 15 to guide the moving position of the pressure plate 18. At the same time, under the action of the reaction force of the spring 17, the contact piece 110 is tightly attached to the electrical connection point on the surface of the plug-in portion 32, so that the electrical connection between the expansion board 31 and the circuit board 1 is more stable.

[0027] Example 2

[0028] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the CPU installation mechanism 2 includes a mounting box 21, the bottom of the mounting box 21 is welded to the top of the welding point 12, the interior of the mounting box 21 is provided with a mounting groove 22, the inner wall of the mounting groove 22 is provided with a contact 23, the inner wall of the mounting groove 22 is overlapped with a CPU 24, the top of the CPU 24 is overlapped with a sealing aluminum plate 25, one side of the top of the mounting box 21 is rotatably connected to a box cover 26, the inner wall of the box cover 26 is fixedly connected to a blower assembly 27, and one side of the box cover 26 is fixedly connected to a dust cover 28.

[0029] In this embodiment, when using the circuit board 1, the CPU 24 is placed in the mounting groove 22, and then covered with the sealing aluminum plate 25, and the box cover 26 is closed for use. During use, the blower assembly 27 blows outside air to the surface of the sealing aluminum plate 25, thereby dissipating the heat of the CPU 24, making it easier to use.

[0030] Example 3

[0031] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the expansion mechanism 3 includes an expansion plate 31, a plug-in portion 32 is provided on one side of the expansion plate 31, the surface of the plug-in portion 32 is plugged into the interior of the plug-in slot 15, one side of the plug-in portion 32 overlaps the side of the contact piece 110 away from the pressure plate 18, and a reinforcing sleeve 2 33 is fixedly connected to both sides of the expansion plate 31, and an electrical connection point is provided at the position of the plug-in portion 32 corresponding to the contact piece 110, and a reinforcing rod 34 is plugged into the inner wall of the reinforcing sleeve 2 33, one end of the reinforcing rod 34 is fixedly connected to the limiting block 1 35, and the other end of the reinforcing rod 34 is plugged into the limiting block 2 36.

[0032] In this embodiment, by inserting the reinforcing rod 34 into the reinforcing sleeve 2 33 and the reinforcing sleeve 1 111, the strength of the connection point between the circuit board 1 and the expansion board 31 is strengthened, so that it has stronger bearing capacity and is not easy to break when squeezed by external force. Subsequently, the limit block 2 36 is inserted into the reinforcing rod 34, and under the action of the limit block 2 36 and the limit block 1 35, the reinforcing rod 34 is prevented from falling off.

[0033] The following is a detailed description of the working principle of the expandable circuit board.

[0034] like Figure 1-5 As shown, when the circuit board 1 is expanded, the plug-in portion 32 on one side of the expansion board 31 is inserted into one end of the circuit board 1 along the plug-in slot 15. During the plug-in process, the plug-in portion 32 pushes the pressure plate 18 to move toward the inner wall of the plug-in slot 15, so that the pressure plate 18 pushes the spring 17 to contract, and the guide rod 16 is inserted into the inner wall of the plug-in slot 15 to guide the moving position of the pressure plate 18. At the same time, under the action of the reaction force of the spring 17, the contact piece 110 is closely attached to the electrical connection point on the surface of the plug-in portion 32, so that the electrical connection between the expansion board 31 and the circuit board 1 is more stable. Then, the reinforcing rod 34 is inserted into the reinforcing sleeve 2 33 and In the reinforcing sleeve 111, the strength of the connection point between the circuit board 1 and the expansion board 31 is strengthened to make it more capable of bearing and not easy to break when squeezed by external force. Then, the limit block 2 36 is inserted into the reinforcing rod 34. Under the action of the limit block 2 36 and the limit block 1 35, the reinforcing rod 34 is prevented from falling off. When using the circuit board 1, the CPU 24 is placed in the installation slot 22, and then the sealing aluminum plate 25 is covered, and the box cover 26 is closed for use. During use, the blower assembly 27 blows outside air to the surface of the sealing aluminum plate 25, thereby dissipating the heat of the CPU 24, making it easier to use.

[0035] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An expandable circuit board, comprising a circuit board (1), characterized in that: A CPU mounting mechanism (2) is welded on the top of the circuit board (1), and an expansion mechanism (3) is plugged into one end of the circuit board (1).

2. The expandable circuit board according to claim 1, characterized in that: The circuit board (1) comprises a board body (11), a soldering point (12) is fixedly connected to the top of the board body (11), components (13) are soldered to the surface of the soldering point (12), and a mounting hole (14) is provided on the surface of one end of the board body (11).

3. The expandable circuit board according to claim 2, characterized in that: An inserting groove (15) is formed at one end of the plate body (11) away from the mounting hole (14); a guide rod (16) is inserted into the inner wall of the inserting groove (15); a spring (17) is movably sleeved on the surface of the guide rod (16); one end of the spring (17) is fixedly connected to the inner wall of the inserting groove (15); one end of the guide rod (16) is fixedly connected to a pressure plate (18); a side of the pressure plate (18) close to the guide rod (16) is fixedly connected to a side of the spring (17) away from the inner wall of the inserting groove (15).

4. The expandable circuit board according to claim 3, characterized in that: A wire (19) is fixedly connected to one side of the pressure plate (18) close to the spring (17); one end of the wire (19) is fixedly connected to a contact piece (110); a side of the contact piece (110) close to the wire (19) is overlapped with one side of the pressure plate (18); and a reinforcing sleeve (111) is fixedly connected to the surface of the plate body (11).

5. The expandable circuit board according to claim 1, characterized in that: The CPU installation mechanism (2) comprises an installation box (21), the bottom of the installation box (21) is welded to the top of the welding point (12), a mounting groove (22) is arranged inside the installation box (21), a contact (23) is arranged on the inner wall of the installation groove (22), a CPU (24) is overlapped on the inner wall of the installation groove (22), and a sealing aluminum plate (25) is overlapped on the top of the CPU (24).

6. The expandable circuit board according to claim 5, characterized in that: A box cover (26) is rotatably connected to one side of the top of the installation box (21), an air blowing assembly (27) is fixedly connected to the inner wall of the box cover (26), and a dust cover (28) is fixedly connected to one side of the box cover (26).

7. The expandable circuit board according to claim 1, characterized in that: The expansion mechanism (3) comprises an expansion plate (31), one side of the expansion plate (31) is provided with a plug-in portion (32), the surface of the plug-in portion (32) is plugged into the interior of the plug-in slot (15), one side of the plug-in portion (32) overlaps with a side of the contact sheet (110) away from the pressure plate (18), two sides of the expansion plate (31) are fixedly connected with a reinforcing sleeve (33), and an electrical connection point is provided at a position of the plug-in portion (32) corresponding to the contact sheet (110).

8. The expandable circuit board according to claim 7, characterized in that: A reinforcing rod (34) is inserted into the inner wall of the reinforcing sleeve (33); one end of the reinforcing rod (34) is fixedly connected to the limiting block (35); and the other end of the reinforcing rod (34) is inserted into the limiting block (36).

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