A spliced printed circuit board

Abstract

This utility model relates to the field of printed circuit board technology and discloses a splicing printed circuit board, including a circuit board body. Both ends of the circuit board body are fixed with mating frames. Each mating frame includes a bolt cylinder, and a bearing frame is fixed inside one end of the bolt cylinder. A knob is fixed to the inner wall of the bearing frame, and a soft rubber sleeve is fitted around the outer wall of the knob. A bolt rod is fixed to one end of the knob, and a threaded groove is formed on the outer wall of one end of the bolt rod. A positioning cylinder is threaded to one end of the bolt rod. This utility model uses a splicing groove in the middle of the first and second circuit boards to assist in splicing alignment. An internal skeleton embedded inside the circuit board enhances the structural strength of the bolt cylinders at both ends and the circuit board body. Simultaneously, the symmetrically distributed bolt cylinders and positioning cylinders at both ends provide reinforcement. The reinforcement points are located at both ends of the circuit board structure, maintaining a balance of force points from two directions, thereby ensuring the stability and robustness of the splicing structure.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board technology, specifically a spliced ​​printed circuit board. Background Technology

[0002] Printed circuit boards (PCBs) are a crucial component of the electronics industry. Almost every electronic device, from small items like watches and calculators to large systems like computers, communication devices, and military weapons, relies on PCBs for electrical interconnection with integrated circuits and other electronic components. A PCB consists of an insulating substrate, connecting wires, and pads for mounting and soldering electronic components. It serves the dual purpose of providing conductive lines and insulation, while also reducing overall size, lowering costs, and improving the quality and reliability of electronic devices. PCBs are mounted on machines using pre-drilled holes during manufacturing. Modular PCBs, on the other hand, combine individual circuit boards to form a single, integrated PCB structure, allowing for the mounting of more components.

[0003] Existing technology, such as the patent with publication number CN221634036U, discloses a splicing printed circuit board, including a second printed circuit board and a first printed circuit board. The second printed circuit board is located on one side of the first printed circuit board. A splicing interface second is provided on one side of the first printed circuit board, and a splicing interface first is provided on one side of the second printed circuit board. The splicing interface first is in contact with the splicing interface second.

[0004] While the aforementioned existing technologies have significant beneficial effects, they still have shortcomings:

[0005] The above-mentioned spliced ​​printed circuit board (PCB) uses splicing interface 2 and splicing interface 1 to make the connection between PCB 1 and PCB 2 tighter. When repairing or replacing components, only the damaged small board needs to be replaced or repaired, instead of replacing the entire board. However, relying solely on the splicing method and the positioning plates on both sides of the top surface for clamping is not enough to maintain the overall structural stability after splicing. When both sides of the PCB are affected by upward force, the joint in the middle is not stable enough. Moreover, the positioning plates of the two groups only clamp on the surface and cannot maintain the splicing fixation of the bottom of the PCB, which may lead to easy dislocation and unstable splicing, affecting the stable use of the PCB during subsequent installation. Therefore, a spliced ​​PCB is proposed. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a splicing printed circuit board. The splicing is assisted by a splicing groove in the middle of the first and second circuit boards, and is reinforced by bolt cylinders and positioning cylinders symmetrically distributed at both ends. The reinforcement points are located at both ends of the circuit board structure, which can maintain the balance of the stress points from two directions and improve the connection stability.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a splicing printed circuit board, comprising a circuit board body, with connecting frames fixed at both ends of the circuit board body, each connecting frame including a bolt cylinder, and a bearing frame fixed inside one end of the bolt cylinder, a knob fixed to the inner wall of the bearing frame, and a soft rubber sleeve attached to the outer wall of the knob, a bolt rod fixed to one end of the knob, a threaded groove formed on the outer wall of one end of the bolt rod, a positioning cylinder threaded to one end of the bolt rod, and a connecting frame fixed to one side of the outer wall of the bolt cylinder and the positioning cylinder, and an inner skeleton fixed to the inner wall of the connecting frame.

[0008] Preferably, the inner frame is embedded and fixed inside the circuit board body, and both ends of the inner frame are fixed with symmetrically distributed bolt cylinders and positioning cylinders.

[0009] Preferably, the knob forms a rotating structure with the bolt cylinder via a bearing bracket, and the soft rubber sleeve is evenly fitted around the outer wall of the knob.

[0010] Preferably, the bolt cylinder and the positioning cylinder form a threaded detachable structure through the bolt rod, and both the positioning cylinder and the bolt cylinder are fixedly connected to the inner frame through a connecting bracket.

[0011] Preferably, the circuit board body includes a first circuit board, and a second circuit board is engaged with one side of the first circuit board. The first and second circuit boards have circuit layers inside, and through holes are distributed around the inside of the circuit layers. Mounting holes are symmetrically opened around the first and second circuit boards. A splicing groove is opened in the middle of the first and second circuit boards, and an inner post is fixed in the center of the inner wall of the splicing groove. A splicing strip is inserted into one side of the splicing groove.

[0012] Preferably, the first circuit board is engaged with the splicing strip through a splicing groove and inner studs, and the inner studs are arranged at equal intervals along the center of the inner wall of the splicing groove.

[0013] Preferably, the circuit layer is uniformly bonded along the inner interlayer of the first and second circuit boards, and the circuit layer is connected to the vias.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses the splicing groove opened in the middle of the first circuit board and the second circuit board to assist in splicing and alignment. The internal skeleton embedded in the circuit board enhances the structural strength of the bolt cylinders at both ends and the circuit board body. At the same time, it relies on the symmetrically distributed bolt cylinders and positioning cylinders at both ends for connection and reinforcement. The reinforcement points are located at both ends of the circuit board structure, which can maintain the balance of the force points from two directions, thereby maintaining the stability and firmness of the splicing structure.

[0016] 2. This printed circuit board is formed by combining the first circuit board and the second circuit board. The internal circuit layer sandwich structure and vias can maintain the normal use of the overall circuit board. The splicing groove and splicing strip of this circuit board assembly adopts a concave-convex mating strip structure. The splicing groove structure can be used for simultaneous mating with the internal studs, which can improve the connection stability of the middle gap.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the main body of the circuit board of this utility model;

[0019] Figure 2 This is a partial three-dimensional structural diagram of the splicing groove of this utility model;

[0020] Figure 3 This is a side view of the docking frame structure of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the bolt cylinder of this utility model.

[0022] In the diagram: 1. Circuit board body; 101. First circuit board; 102. Second circuit board; 103. Circuit layer; 104. Through hole; 105. Mounting hole; 106. Splicing groove; 107. Inner stud; 108. Splicing strip; 2. Connecting frame; 201. Bolt sleeve; 202. Bearing frame; 203. Knob; 204. Soft rubber sleeve; 205. Bolt rod; 206. Threaded groove; 207. Positioning cylinder; 208. Connecting frame; 209. Inner skeleton. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This embodiment of a splicing printed circuit board includes a circuit board body 1, with docking brackets 2 fixed at both ends of the circuit board body 1. The circuit board body 1 includes a first circuit board 101, and a second circuit board 102 is engaged on one side of the first circuit board 101. A circuit layer 103 is provided inside the first circuit board 101 and the second circuit board 102, and through holes 104 are distributed around the inside of the circuit layer 103. Mounting holes 105 are symmetrically opened around the first circuit board 101 and the second circuit board 102, and a splicing groove 106 is opened in the middle of the first circuit board 101 and the second circuit board 102. An inner post 107 is fixed in the center of the inner wall of the splicing groove 106, and a splicing strip 108 is inserted into one side of the splicing groove 106.

[0025] like Figure 1-4 As shown, the printed circuit board in this utility model is similar in structure to existing printed circuit boards, such as the splicing printed circuit board disclosed in CN221634036U. The main improvement of this utility model is that the splicing groove 106 opened in the middle of the first circuit board 101 and the second circuit board 102 is used to assist in the splicing and alignment. This is reinforced by bolt sleeves 201 and positioning sleeves 207 symmetrically distributed at both ends. The reinforcement points are located at both ends of the circuit board structure, which can maintain the balance of force points from both directions and improve the connection stability. The circuit layer 103 and vias 104 in this utility model are existing technologies. When using this printed circuit board, the splicing groove 106 opened on one side of the first circuit board 101 can be used to connect the second circuit board 101 and the second circuit board 102. After the splicing strips 108 of 2 are aligned, the mating brackets 2 at both ends of the entire circuit board body 1 are tightened and gradually pressed together. The inner inserts 107 on the inner wall of the splicing groove 106 are inserted into the holes on the surface of the splicing strips 108 to complete the assembly. This splicing printed circuit board is mainly formed by the combination of the first circuit board 101 and the second circuit board 102. It can maintain the normal use of the entire circuit board through the internal circuit layer 103 sandwich structure and the via 104. The splicing groove 106 and splicing strip 108 of this circuit board assembly adopt a concave-convex mating strip structure. The splicing groove 106 structure can be used to connect with the inner inserts 107 at the same time as the mating, which can improve the connection stability of the middle gap.

[0026] like Figure 2-4As shown, the docking frame 2 includes a bolt cylinder 201, and a bearing frame 202 is fixed inside one end of the bolt cylinder 201. A knob 203 is fixed to the inner wall of the bearing frame 202, and a soft rubber sleeve 204 is attached to the outer wall of the knob 203. A bolt rod 205 is fixed to one end of the knob 203, and a threaded groove 206 is opened on the outer wall of one end of the bolt rod 205. A positioning cylinder 207 is threaded to one end of the bolt rod 205, and a connecting frame 208 is fixed to one side of the outer wall of the bolt cylinder 201 and the positioning cylinder 207. An inner frame 209 is fixed to the inner wall of the connecting frame 208. When the circuit board is docked and installed, the splicing groove 106 opened on one side of the first circuit board 101 is first aligned with the splicing strip 108 of the second circuit board 102. At this time, the center of the bolt cylinders 201 at both ends of the second circuit board 102 is also aligned with the center of the positioning cylinders 207 at both ends of the first circuit board 101. At this point, the user can pinch the knob 203 and rotate it along the bearing bracket 202, causing the connected bolt rod 205 and the positioning cylinder 207 to be tightened and fixed along the threaded structure. Disassembly and assembly can be quickly performed by simply rotating the knob 203. The soft rubber sleeve 204 enhances friction, making installation and disassembly convenient. The splicing and installation are completed when the first circuit board 101 and the second circuit board 102 are firmly connected. The circuit board is aligned by the splicing groove 106 in the middle of the first circuit board 101 and the second circuit board 102. The internal skeleton 209 embedded in the circuit board enhances the structural strength of the bolt cylinders 201 at both ends and the circuit board body. At the same time, the bolt cylinders 201 and the positioning cylinder 207 symmetrically distributed at both ends are connected and reinforced. The reinforcement points are located at both ends of the circuit board structure, which can maintain the balance of the force points from both directions, thereby maintaining the stability and firmness of the splicing structure.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A spliced ​​printed circuit board, comprising a circuit board body (1), characterized in that, The circuit board body (1) is fixed with docking frames (2) at both ends. The docking frame (2) includes a bolt cylinder (201), and a bearing frame (202) is fixed inside one end of the bolt cylinder (201). A knob (203) is fixed on the inner wall of the bearing frame (202), and a soft rubber sleeve (204) is attached to the outer wall of the knob (203). A bolt rod (205) is fixed on one end of the knob (203). A threaded groove (206) is opened on the outer wall of one end of the bolt rod (205). A positioning cylinder (207) is threaded to one end of the bolt rod (205). A connecting frame (208) is fixed on one side of the outer wall of the bolt cylinder (201) and the positioning cylinder (207), and an inner frame (209) is fixed on the inner wall of the connecting frame (208).

2. The spliced ​​printed circuit board according to claim 1, characterized in that, The inner frame (209) is embedded and fixed inside the circuit board body (1), and both ends of the inner frame (209) are fixed with symmetrically distributed bolt cylinders (201) and positioning cylinders (207).

3. A spliced ​​printed circuit board according to claim 1, characterized in that, The knob (203) forms a rotating structure with the bolt sleeve (201) through the bearing bracket (202), and the soft rubber sleeve (204) is evenly attached to the outer wall around the knob (203).

4. A spliced ​​printed circuit board according to claim 1, characterized in that, The bolt cylinder (201) forms a threaded detachable structure with the positioning cylinder (207) through the bolt rod (205), and both the positioning cylinder (207) and the bolt cylinder (201) are fixedly connected to the inner frame (209) through the connecting bracket (208).

5. A spliced ​​printed circuit board according to claim 1, characterized in that, The circuit board body (1) includes a first circuit board (101), and a second circuit board (102) is engaged on one side of the first circuit board (101). The first circuit board (101) and the second circuit board (102) are provided with a circuit layer (103), and through holes (104) are distributed around the inside of the circuit layer (103). Mounting holes (105) are symmetrically opened around the first circuit board (101) and the second circuit board (102). A splicing groove (106) is opened in the middle of the first circuit board (101) and the second circuit board (102), and an inner post (107) is fixed in the center of the inner wall of the splicing groove (106). A splicing strip (108) is inserted into one side of the splicing groove (106).

6. A spliced ​​printed circuit board according to claim 5, characterized in that, The first circuit board (101) is inserted and engaged with the splicing strip (108) through the splicing groove (106) and the inner stake (107), and the inner stake (107) is arranged at equal intervals along the center of the inner wall of the splicing groove (106).

7. A spliced ​​printed circuit board according to claim 5, characterized in that, The circuit layer (103) is uniformly attached to the inner interlayer of the first circuit board (101) and the second circuit board (102), and the circuit layer (103) is connected to the via (104).

Images