A multilayer circuit board structure
By using a design that supports the fixed side plate at a distance and a limit pin spring structure, the problems of difficult disassembly and heat dissipation of multi-layer circuit boards are solved, achieving convenient replacement and efficient heat dissipation.
Patent Information
- Application Number
- CN202522558711.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-02
AI Technical Summary
Multilayer circuit boards are difficult to disassemble and replace when replacing electrical equipment, and the lamination process leads to high debugging costs. Heat dissipation needs to be considered, making it difficult to balance all these aspects.
The design allows the supporting and fixed side plates to be located away from the structure. By using alternating end and middle folding connecting blocks, combined with limit pins and springs, the circuit board can be easily disassembled and heat dissipated.
This enables convenient replacement of circuit boards and enhances heat dissipation, reduces debugging costs, and improves the safety and reliability of replacement.
Smart Images
Figure CN224947761U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of circuit board technology, specifically relating to a multilayer circuit board structure. Background Technology
[0002] Multilayer circuit boards are printed circuit boards composed of three or more circuit layers. Each layer is typically connected together through a lamination process, and electrical connections between different layers are achieved through vertical vias. Compared to single-sided or double-sided circuit boards, multilayer circuit boards offer higher component density, more complex circuit designs, and better signal integrity, and are widely used in mobile phones, computers, medical devices, communications, and other fields.
[0003] Problems with existing technology: When replacing the electrical equipment connected to the circuit board, the corresponding circuit board also needs to be readjusted to adapt to the equipment. When debugging some circuit boards or frequently replacing the electrical equipment connected to the circuit board, the lamination process of the circuit board makes it difficult to disassemble and replace the laminated circuit boards. Furthermore, the heat dissipation effect of the replaced and adjusted circuit board also needs to be taken into account due to the different power, which increases the debugging cost. Utility Model Content
[0004] The purpose of this invention is to provide a multi-layer circuit board structure that can achieve the separation of the circuit board by distancing multiple supporting and fixing side plates, thereby increasing the heat dissipation effect between the supporting and fixing side plates and facilitating replacement.
[0005] The specific technical solution adopted by this utility model is as follows: A multi-layer circuit board structure includes: a top circuit board; a plurality of other circuit boards are disposed below the top circuit board and arranged in a vertical array; a connecting line is provided between the top circuit board and the other circuit boards; the top circuit board and the plurality of other circuit boards are interconnected by the connecting line; a supporting and fixing side plate is provided on both sides of the top circuit board and the other circuit boards; the plurality of supporting and fixing side plates are arranged in a vertical array; an end folding connecting block or a middle folding connecting block is provided between adjacent supporting and fixing side plates; the end folding connecting blocks and the middle folding connecting blocks are alternately arranged between adjacent supporting and fixing side plates.
[0006] A slide bar is fixedly connected to the supporting and fixing side plate near the top circuit board. The top circuit board and the slide bar are slidably installed. Pop-out shells and limiting pins are respectively provided at the ends of the two sides of the slide bar.
[0007] The end folding connecting blocks are located at both ends of the supporting and fixed side plate, and the middle folding connecting blocks are located near the middle of the supporting and fixed side plate.
[0008] The supporting and fixing side plate has grooves reserved near the end folding connecting block and the middle folding connecting block, and the end folding connecting block and the middle folding connecting block are located inside the grooves.
[0009] An adjusting bolt is rotatably installed on the supporting fixed side plate near the end of the end folding connecting block. The end of the adjusting bolt extends to the end folding connecting block, and the adjusting bolt is threadedly connected to the end folding connecting block.
[0010] The structure of the middle folding connecting block is the same as that of the end folding connecting block.
[0011] A spring is fixedly connected inside the ejector shell, and a washer is fixedly connected to the end of the spring. The end of the top circuit board is in contact with the washer.
[0012] A collar is fixedly installed on the supporting and fixing side plate near the limiting pin, and the limiting pin and the collar are slidably installed.
[0013] The end of the limiting pin is fixedly connected to a limiting plug, and a positioning hole is provided on the slide bar near the limiting plug. The limiting plug is inserted into the positioning hole.
[0014] The limiting plug is designed in an inverted conical shape, and the positioning hole has the same shape as the limiting plug.
[0015] The technical effects achieved by this utility model are as follows: This invention allows the circuit board to be moved away from each other by distancing multiple supporting and fixing side plates, thereby increasing the heat dissipation effect between the supporting and fixing side plates and facilitating replacement.
[0016] In this invention, two limiting pins make the limiting more secure and safe. The spring can automatically pop out the top circuit board when both hands pull up the limiting pins, preventing the limiting plug from resetting when the board is released, thus preventing the top circuit board from being unable to be removed. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the appearance structure of this utility model; Figure 2 This is a structural side view of the appearance of this utility model; Figure 3 This is a schematic diagram of the structure of the end folding connecting block in this utility model; Figure 4 This is a schematic diagram of the ejection shell structure in this utility model; Figure 5 This is a cross-sectional view of the ejection shell structure in this utility model; Figure 6 This is a schematic diagram of the limiting pin in this utility model.
[0018] The attached diagram lists the components represented by each number as follows: 1. Top circuit board; 2. Other circuit boards; 3. Support and fixing side plate; 4. End folding connecting block; 5. Middle folding connecting block; 6. Connecting wire; 301. Sliding bar; 302. Pop-out shell; 303. Limiting pin; 304. Limiting plug; 401. Adjusting bolt. Detailed Implementation
[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0020] like Figure 1 - Figure 2 As shown, a multi-layer circuit board structure includes: a plurality of other circuit boards 2 disposed below a top circuit board 1, the plurality of other circuit boards 2 being arranged in a vertical array, a connecting line 6 being disposed between the top circuit board 1 and the other circuit boards 2, the top circuit board 1 and the plurality of other circuit boards 2 being interconnected by the connecting line 6, a supporting and fixing side plate 3 being disposed on both sides of the top circuit board 1 and the other circuit boards 2, the plurality of supporting and fixing side plates 3 being arranged in a vertical array, an end folding connecting block 4 or a middle folding connecting block 5 being disposed between adjacent supporting and fixing side plates 3, the end folding connecting block 4 and the middle folding connecting block 5 being alternately disposed between adjacent supporting and fixing side plates 3.
[0021] The top circuit board 1 is similar in structure to the other circuit boards 2, but the top circuit board 1 has a large number of electronic components on its top. The electronic components on the other circuit boards 2 are limited in size. The connecting line 6 replaces the conductive hole that connects the top and bottom. The top circuit board 1 and the other circuit boards 2 are fixed and limited by the supporting and fixing side plate 3. The supporting and fixing side plate 3 can be moved away from each other or close to each other by the end folding connecting block 4 and the middle folding connecting block 5, thereby reducing the overall volume and strengthening the protection of the other circuit boards 2.
[0022] See attached document Figure 3 - Figure 4A slide bar 301 is fixedly connected to the support and fixing side plate 3 near the top circuit board 1. The top circuit board 1 and the slide bar 301 are slidably installed. The ends of the slide bar 301 are respectively provided with pop-out shells 302 and limit pins 303. The end folding connecting blocks 4 are located at both ends of the support and fixing side plate 3, and the middle folding connecting block 5 is located near the middle of the support and fixing side plate 3. The support and fixing side plate 3 has grooves reserved near the end folding connecting blocks 4 and the middle folding connecting blocks 5. The end folding connecting blocks 4 and the middle folding connecting blocks 5 are located inside the grooves. An adjusting bolt 401 is rotatably installed near the end of the end folding connecting block 4. The end of the adjusting bolt 401 extends to the end folding connecting block 4 and is threadedly connected to the end folding connecting block 4. The middle folding connecting block 5 has the same structure as the end folding connecting block 4.
[0023] According to the above structure, when it is necessary to dissipate heat from the top circuit board 1 and the other circuit boards 2, the temperature can be reduced by separating the multiple supporting and fixing side plates 3 from each other, thereby increasing the airflow inside them. The friction between the end folding connecting block 4 and the supporting fixed side plate 3 overcomes the gravity that causes the supporting fixed side plate 3 to move away from each other. The friction between the end folding connecting block 4 and the supporting fixed side plate 3 can be controlled by the adjusting bolt 401. When it is necessary to increase the friction, simply tighten the adjusting bolt 401 and the end folding connecting block 4 to make the end folding connecting block 4 and the supporting fixed side plate 3 fit more tightly. According to the friction formula, the greater the pressure, the greater the static friction. Although the adjusting bolt 401 is rotatably connected to the end folding connecting block 4, most of the area where the supporting fixed side plate 3 and the end folding connecting block 4 are in contact is fixed. Therefore, the rotatable connection between the adjusting bolt 401 and the supporting fixed side plate 3 will not affect the friction between the end folding connecting block 4 and the supporting fixed side plate 3.
[0024] See attached document Figure 4 - Figure 6 A spring is fixedly connected inside the ejector shell 302, and a washer is fixedly connected to the end of the spring. The end of the top circuit board 1 contacts the washer. A collar is fixedly installed on the supporting and fixing side plate 3 near the limiting pin 303. The limiting pin 303 and the collar are slidably installed. A limiting plug 304 is fixedly connected to the end of the limiting pin 303. A positioning hole is opened on the slide bar 301 near the limiting plug 304. The limiting plug 304 is inserted into the positioning hole. The limiting plug 304 is inverted conical. The shape of the positioning hole is the same as that of the limiting plug 304.
[0025] According to the above structure, when it is necessary to replace the top circuit board 1 or other circuit boards 2, first disconnect the connecting wire 6 from the connection of the board, and then use both hands to pull the two limiting pins 303 at the end of the board upwards to separate the limiting plug 304 from the positioning hole. At this time, the cover will be pushed out a distance under the action of the spring. At this time, the limiting plug 304 will be above the board, ensuring that the board is no longer limited by the limiting plug 304. Then, pull out the board for replacement. The installation is done in reverse. The design of the two limit pins 303 makes the limit more secure and safe. The spring design allows the top circuit board 1 to pop out automatically when both hands pull up the limit pins 303, preventing the limit plug 304 from resetting when the board is released, thus preventing the top circuit board 1 from being unable to be removed.
[0026] The working principle of this utility model is as follows: When it is necessary to dissipate heat from the top circuit board 1 and the other circuit boards 2, the temperature can be reduced by separating the multiple supporting and fixing side plates 3 from each other, thereby increasing the air circulation inside. When it is necessary to replace the top circuit board 1 or the other circuit boards 2, firstly, the connecting wire 6 should be pulled out from the connection point of the board. Then, use both hands to pull the two limiting pins 303 at the end of the board upwards, so that the limiting plug 304 is separated from the positioning hole. At this time, under the action of the spring, the cover will be pushed out a distance. At this time, the limiting plug 304 will be above the board, ensuring that the board is no longer limited by the limiting plug 304. Then, the board can be pulled out for replacement.
[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A multilayer circuit board structure, comprising a top circuit board (1), characterized in that: Below the top circuit board (1), there are multiple other circuit boards (2), which are arranged in a vertical array. A connecting line (6) is provided between the top circuit board (1) and the other circuit boards (2), and the top circuit board (1) and the multiple other circuit boards (2) are all connected to each other through the connecting line (6). The top circuit board (1) and the other circuit boards (2) are provided with supporting and fixing side plates (3) on both sides, and multiple supporting and fixing side plates (3) are arranged in a vertical array. An end folding connecting block (4) or a middle folding connecting block (5) is provided between adjacent support and fixed side plates (3), and the end folding connecting block (4) and the middle folding connecting block (5) are alternately arranged between adjacent support and fixed side plates (3).
2. The circuit board structure according to claim 1, characterized in that: The supporting fixed side plate (3) is fixedly connected to a slide bar (301) near the top circuit board (1). The top circuit board (1) and the slide bar (301) are slidably installed. The ends of the slide bar (301) are respectively provided with pop-out shells (302) and limit pins (303).
3. The circuit board structure according to claim 1, characterized in that: The end folding connecting block (4) is located at both ends of the supporting and fixed side plate (3), and the middle folding connecting block (5) is located near the middle of the supporting and fixed side plate (3).
4. The circuit board structure according to claim 1, characterized in that: The supporting and fixing side plate (3) has grooves reserved near the end folding connecting block (4) and the middle folding connecting block (5), and the end folding connecting block (4) and the middle folding connecting block (5) are both located inside the grooves.
5. The circuit board structure according to claim 1, characterized in that: An adjusting bolt (401) is rotatably installed on the supporting fixed side plate (3) near the end of the end folding connecting block (4). The end of the adjusting bolt (401) extends to the end folding connecting block (4), and the adjusting bolt (401) is threadedly connected to the end folding connecting block (4).
6. The circuit board structure according to claim 1, characterized in that: The structure of the middle folding connecting block (5) is the same as that of the end folding connecting block (4).
7. The circuit board structure according to claim 2, characterized in that: A spring is fixedly connected inside the ejector shell (302), and a washer is fixedly connected to the end of the spring. The end of the top circuit board (1) is in contact with the washer.
8. The circuit board structure according to claim 1, characterized in that: A collar is fixedly installed on the support and fixing side plate (3) near the limiting pin (303), and the limiting pin (303) and the collar are slidably installed.
9. The circuit board structure according to claim 2, characterized in that: The end of the limiting pin (303) is fixedly connected to the limiting plug (304), and the slide bar (301) has a positioning hole near the limiting plug (304), and the limiting plug (304) is inserted into the positioning hole.
10. The circuit board structure according to claim 9, characterized in that: The limiting plug (304) is inverted conical in shape, and the positioning hole has the same shape as the limiting plug (304).