PCBA board oil leakage prevention sealing structure
By combining the sealing seat components and PCBA board components, the complexity and high cost of the PCBA board oil leakage prevention sealing structure are solved, achieving rapid assembly, good sealing performance, and structural protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YUCHEN MICRO TECHNOLOGY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing technology, the structural design of the protective cover component of the oil leakage prevention and sealing structure of the PCBA board is complex and costly when the PCBA board needs an oil leakage prevention and sealing structure in certain scenarios.
The design employs a combination of sealing base components and PCBA board components, including heat-conducting plates, fixed sealing frames, movable frames, fixing bolts, sealing rings, and protective cover components. Through threaded connections and the use of transparent potting compound, it achieves rapid assembly and sealing protection.
It enables rapid assembly and good sealing of PCBA boards, while maintaining the thermal conductivity and easy maintenance of the structure, and provides protection for PCBA boards to prevent damage from external factors.
Smart Images

Figure CN224401852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCBA board technology, specifically to a PCBA board oil-proof sealing structure. Background Technology
[0002] PCBA is a finished board in which electronic components are soldered onto a printed circuit board (PCB), and circuit functions are achieved through surface mount technology (SMT) or through-hole technology (DIP).
[0003] PCBA (Printed Circuit Board Assembly) fixes electronic components (such as chips, resistors, capacitors, etc.) onto a PCB board by soldering to form a complete circuit system, realizing electrical connection and signal transmission. It is a core component of electronic products (such as mobile phones, computers, automotive electronics, etc.).
[0004] Conventional PCBA boards, when used in certain scenarios, need to be protected from oil intrusion caused by the operation of external structural components. However, their complex structure makes maintenance difficult and their manufacturing cost is relatively high. Utility Model Content
[0005] The purpose of this invention is to provide a leak-proof sealing structure for PCBA boards to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a PCBA board oil leakage prevention and sealing structure, including a sealing seat component and a PCBA board component. The PCBA board component is horizontally installed in the middle of the sealing seat component, and a damping telescopic rod is vertically installed on the top edge of the sealing seat component. A protective cover component is horizontally connected to the top of the damping telescopic rod. The sealing seat component includes a heat-conducting plate, a fixed sealing frame, a movable frame, a fixing bolt, a fixing groove, and a sealing ring. The fixed sealing frame is installed on the top surface of the heat-conducting plate, and a movable frame is connected to the horizontal end of the fixed sealing frame. Fixing bolts are symmetrically installed at the junction of the movable frame and the fixed sealing frame. A fixing groove is horizontally opened on the surface of the movable frame and the fixed sealing frame near the vertical central axis of the heat-conducting plate, and a sealing ring is provided on the inner surface of the fixing groove.
[0007] Furthermore, the heat-conducting plate and the fixed sealing frame are fixedly connected, and the fixing bolts are installed obliquely at the junction of the fixed sealing frame and the movable frame.
[0008] Furthermore, the fixing bolt and the fixing frame and the movable frame are connected by threads, and the fixing frame and the movable frame are movably connected.
[0009] Furthermore, the PCBA board component includes a PCBA board body, a conformal coating, and a thermally conductive silicon plate. The surface of the PCBA board body is coated with a conformal coating, and the bottom surface of the PCBA board body is covered with a thermally conductive silicon plate.
[0010] Furthermore, the inner surface structure of the fixing groove matches the edge surface structure of the PCBA board body, and the top surface of the heat-conducting plate has a groove structure that matches the bottom surface structure of the heat-conducting silicon plate.
[0011] Furthermore, the connection between the sealing seat component and the PCBA board component is coated with a transparent potting compound, and the left and right sides of the heat-conducting plate have vertically arranged holes for bolt installation.
[0012] Furthermore, the protective cover component includes a cover plate, a protective frame, and an antistatic coating. The bottom of the cover plate is provided with a protective frame, and the surfaces of the cover plate and the protective frame are coated with an antistatic coating.
[0013] Furthermore, the cover plate and the protective frame are integrated into one structure, and the upper and lower ends of the damping telescopic rod are vertically connected to the bottom edge of the cover plate and the top surface edge of the fixed sealing frame.
[0014] This utility model provides a leak-proof sealing structure for PCBA boards, which has the following advantages:
[0015] 1. This utility model, by setting a sealing seat component, allows the entire PCBA board component to be horizontally inserted into a fixing groove inside a fixed sealing frame. The thermally conductive silicon plate at the bottom of the PCBA board body is attached to the top surface of the heat-conducting plate. A movable frame is then connected to the opening of the fixed sealing frame, and the movable frame is fastened to one side of the PCBA board component. Fixing bolts are used to connect and fix the fixed sealing frame and the movable frame, thus achieving rapid assembly between the sealing seat component and the PCBA board component. Furthermore, because the connection between the sealing seat component and the PCBA board component is coated with a transparent potting compound, combined with the three-proof coating structure, the sealing performance of the PCBA board component structure can be maximized without affecting the normal operation of the PCBA board body. The fixed sealing frame and movable frame connected by fixing bolts also provide a degree of convenient maintenance. In addition, the structure of the thermally conductive silicon plate and the heat-conducting plate provides good structural thermal conductivity, ensuring the stable operation of the PCBA board component.
[0016] 2. This utility model features a damping telescopic rod vertically installed at the top edge of the sealing seat component, with a protective cover component connected to the top of the damping telescopic rod. As the damping telescopic rod extends and retracts vertically, it drives the connected protective cover component to achieve vertical lifting and lowering adjustment within a certain range, thereby controlling the relative distance between the sealing seat component and the protective cover component. This structural design, with the protective cover plate having a protective frame at the bottom working in conjunction with the sealing seat component, provides excellent structural protection for the PCBA board component. Furthermore, the anti-static coating prevents external factors from causing unnecessary structural impacts on the PCBA board component, ensuring its structural protection and reducing damage from external factors. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main body of the PCBA board oil leakage prevention and sealing structure of this utility model;
[0018] Figure 2 This is an exploded structural diagram of the main body of the PCBA board oil-proof sealing structure of this utility model;
[0019] Figure 3 This is a three-dimensional structural diagram of a sealing seat component of a PCBA board oil-proof sealing structure according to the present invention;
[0020] Figure 4 This is a three-dimensional structural diagram of a PCBA board component for an oil-leakage-proof sealing structure according to the present invention.
[0021] Figure 5 This is a three-dimensional structural diagram of a protective cover component of a PCBA board oil-proof sealing structure according to the present invention.
[0022] In the diagram: 1. Sealing seat component; 101. Heat-conducting plate; 102. Fixed sealing frame; 103. Movable frame; 104. Fixing bolt; 105. Fixing groove; 106. Sealing ring; 2. PCBA board component; 201. PCBA board body; 202. Three-proof coating; 203. Thermally conductive silicon plate; 3. Damping telescopic rod; 4. Protective cover component; 401. Protective cover plate; 402. Protective frame; 403. Antistatic coating. Detailed Implementation
[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0024] like Figures 1 to 5As shown, a PCBA board oil leakage prevention sealing structure includes a sealing seat component 1 and a PCBA board component 2. The PCBA board component 2 is horizontally installed in the middle of the sealing seat component 1, and a damping telescopic rod 3 is vertically installed on the top edge of the sealing seat component 1. A protective cover component 4 is horizontally connected to the top of the damping telescopic rod 3. The sealing seat component 1 includes a heat-conducting plate 101, a fixed sealing frame 102, a movable frame 103, a fixing bolt 104, a fixing groove 105, and a sealing ring 106. The fixed sealing frame 102 is installed on the top surface of the heat-conducting plate 101, and the movable frame 103 is connected to the horizontal end of the fixed sealing frame 102. Fixing bolts 104 are symmetrically installed at the joint between the movable frame 103 and the fixed sealing frame 102. Fixing grooves 105 are horizontally opened on the surface of the movable frame 103 and the fixed sealing frame 102 near the vertical central axis of the heat-conducting plate 101. At the same time, the inner surface of the fixing groove 105 is... A sealing ring 106 is provided. The heat-conducting plate 101 and the fixed sealing frame 102 are fixedly connected. The fixing bolt 104 is obliquely installed at the junction of the fixed sealing frame 102 and the movable frame 103. The fixing bolt 104 is threadedly connected to the fixed sealing frame 102 and the movable frame 103, and the fixed sealing frame 102 and the movable frame 103 are movably connected. The entire PCBA board component 2 is horizontally inserted into the fixing groove 105 inside the fixed sealing frame 102. The heat-conducting silicon plate 203 at the bottom of the PCBA board body 201 is attached to the top surface of the heat-conducting plate 101. Then, the movable frame 103 is connected to the opening of the fixed sealing frame 102 and snapped onto one side of the PCBA board component 2. The fixed sealing frame 102 and the movable frame 103 are connected and fixed using the fixing bolt 104, thereby realizing the rapid assembly between the sealing seat component 1 and the PCBA board component 2.
[0025] like Figures 1 to 5As shown, the PCBA board component 2 includes a PCBA board body 201, a conformal coating 202, and a thermally conductive silicon plate 203. The surface of the PCBA board body 201 is coated with the conformal coating 202, and the bottom surface of the PCBA board body 201 is covered with the thermally conductive silicon plate 203. The inner surface structure of the fixing groove 105 matches the edge surface structure of the PCBA board body 201. A groove structure matching the bottom surface structure of the thermally conductive silicon plate 203 is formed in the middle of the top surface of the thermally conductive plate 101. The connection between the sealing seat component 1 and the PCBA board component 2 is coated with a transparent potting compound. Vertically arranged bolts are formed on the left and right edge surfaces of the thermally conductive plate 101. The installed hole structure, the protective cover component 4 includes a cover plate 401, a protective frame 402 and an antistatic coating 403. The bottom of the cover plate 401 is provided with a protective frame 402, and the surfaces of the cover plate 401 and the protective frame 402 are sprayed with an antistatic coating 403. The cover plate 401 and the protective frame 402 are set as an integral structure, and the upper and lower ends of the damping telescopic rod 3 are vertically connected to the bottom edge of the cover plate 401 and the top surface edge of the fixed sealing frame 102. When the damping telescopic rod 3 extends and retracts vertically, it can drive the protective cover component 4 connected to it to achieve vertical lifting and lowering adjustment within a certain range, thereby controlling the relative distance between the sealing seat component 1 and the protective cover component 4.
[0026] In summary, as Figures 1 to 5 As shown, the PCBA board oil-proof sealing structure is used by first sliding the PCBA board body 201, which has a three-proof coating 202 sprayed on its entire surface, into the fixing groove 105 with a sealing ring 106 inside in the horizontal direction. This allows the PCBA board component 2 to be horizontally inserted into the fixed sealing frame 102. At the same time, the thermally conductive silicon plate 203 at the bottom of the PCBA board body 201 is tightly attached to the groove structure on the top surface of the thermally conductive plate 101 that matches its structure. The movable frame 103 is then connected to one end of the fixed sealing frame 102. The fixed sealing frame 102 and the movable frame 103 are then connected and fixed using the fixing bolt 104.
[0027] The heat-conducting plate 101 has vertically arranged holes on its left and right edge surfaces for bolt installation. With the use of bolts, the entire device is fixed to the mounting structure surface. At the same time, based on the structure of the electronic components on the surface of the PCBA board component 2, the damping telescopic rod 3 is used to extend and retract to adjust the overall height of the cover plate 401 with the protective frame 402 at the bottom. With the assistance of the antistatic coating 403, the sealing seat component 1 and the protective cover component 4 can effectively protect the PCBA board component 2.
[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A PCBA board oil leakage prevention sealing structure, comprising a sealing seat component (1) and a PCBA board component (2), characterized in that: A PCBA board component (2) is horizontally mounted in the middle of the sealing seat component (1), and a damping telescopic rod (3) is vertically mounted on the top edge of the sealing seat component (1). A protective cover component (4) is horizontally connected to the top of the damping telescopic rod (3). The sealing seat component (1) includes a heat-conducting plate (101), a fixed sealing frame (102), a movable frame (103), a fixing bolt (104), a fixing groove (105), and a sealing ring (106). The top of the heat-conducting plate (101) A fixed frame (102) is installed on the surface, and a movable frame (103) is connected to one horizontal end of the fixed frame (102). Fixing bolts (104) are symmetrically installed at the joint between the movable frame (103) and the fixed frame (102). Fixing grooves (105) are horizontally opened on the surface of the movable frame (103) and the fixed frame (102) near the vertical central axis of the heat-conducting plate (101). At the same time, sealing rings (106) are provided on the inner surface of the fixing grooves (105).
2. The PCBA board oil-proof sealing structure according to claim 1, characterized in that, The heat-conducting plate (101) and the fixed sealing frame (102) are fixedly connected, and the fixing bolt (104) is obliquely installed at the junction of the fixed sealing frame (102) and the movable frame (103).
3. The PCBA board oil-proof sealing structure according to claim 1, characterized in that, The fixing bolt (104) and the fixing frame (102) and the movable frame (103) are connected by threads, and the fixing frame (102) and the movable frame (103) are connected in a movable manner.
4. The PCBA board oil-proof sealing structure according to claim 1, characterized in that, The PCBA board component (2) includes a PCBA board body (201), a conformal coating (202), and a thermally conductive silicon plate (203). The surface of the PCBA board body (201) is coated with a conformal coating (202), and the bottom surface of the PCBA board body (201) is covered with a thermally conductive silicon plate (203).
5. The PCBA board oil leakage prevention and sealing structure according to claim 4, characterized in that, The inner surface structure of the fixing groove (105) matches the edge surface structure of the PCBA board body (201), and a groove structure matching the bottom surface structure of the thermal conductive plate (203) is opened in the middle of the top surface of the thermal conductive plate (101).
6. The PCBA board oil leakage prevention and sealing structure according to claim 1, characterized in that, The joint between the sealing seat component (1) and the PCBA board component (2) is coated with a transparent potting compound, and the left and right sides of the heat-conducting plate (101) have vertically arranged holes for bolt installation.
7. The PCBA board oil leakage prevention and sealing structure according to claim 1, characterized in that, The protective cover component (4) includes a cover plate (401), a protective frame (402) and an antistatic coating (403). The bottom of the cover plate (401) is provided with a protective frame (402), and the surfaces of the cover plate (401) and the protective frame (402) are sprayed with an antistatic coating (403).
8. The PCBA board oil leakage prevention and sealing structure according to claim 7, characterized in that, The cover plate (401) and the protective frame (402) are integrated into one structure, and the upper and lower ends of the damping telescopic rod (3) are vertically connected to the bottom edge of the cover plate (401) and the top surface edge of the fixed sealing frame (102).