A circuit board waterproof structure

Abstract

The utility model belongs to circuit board technical field discloses a kind of circuit board waterproof structure, comprising: waterproof shell and circuit board, the waterproof shell includes base, the top of the base is equipped with top cover, the circuit board is assembled in base, the end surface of the waterproof shell is equipped with two groups of wire tube components for discharging wire, the bottom of the base and the top of top cover are equipped with the radiating fin for heat dissipation;The top of waterproof shell is equipped with sealing element.The utility model is assembled in the base of waterproof shell by circuit board, and utilize the assembly of top cover and base to form closed space, effectively prevent external moisture intrusion, to play reliable waterproof protection effect to circuit board;And the wire tube component of the end surface of waterproof shell, the upper semicircular barrel and lower semicircular barrel on it abutment constitute outlet pipe, and the upper special-shaped block and lower special-shaped block inside staggered distribution form wavy channel, not only can orderly discharge wire, but also can further block moisture along wire into waterproof shell interior.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a waterproof structure for circuit boards. Background Technology

[0002] A printed circuit board (PCB) is a plate-shaped material used to support and connect electronic components. It is a key component widely used in electronic devices. Its main function is to arrange electronic components on the board according to a specific circuit pattern and connect these components through circuit paths.

[0003] Nowadays, many electronic devices, such as hair dryers and curling irons, are frequently exposed to harsh environments due to the diverse usage scenarios, with humid environments being particularly common. If the printed circuit board (PCB) is not waterproof, its internal electronic components are easily damaged upon contact with moisture, leading to malfunctions or even rendering the entire device unusable. This not only inconveniences users but also wastes resources. Therefore, a waterproof PCB structure is proposed. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a waterproof structure for circuit boards, which can provide waterproof protection for circuit boards, thereby extending the service life of electronic products.

[0005] This utility model embodiment proposes a waterproof structure for a circuit board, including: a waterproof shell and a circuit board. The waterproof shell includes a base, and a top cover is fitted on the top of the base. The circuit board is fitted inside the base. The end face of the waterproof shell is provided with two sets of conduit assemblies for discharging wires. The bottom of the base and the top of the top cover are both fitted with heat dissipation fins for heat dissipation. The top of the waterproof shell is equipped with a sealing element. The conduit assembly includes an upper semi-arc cylinder and a lower semi-arc cylinder. The upper and lower semi-arc cylinders abut against each other to form an outlet conduit. Arc-shaped clips are fixed to the curved outer walls of both the upper and lower semi-arc cylinders. Two sets of upper irregular blocks are fixed to the curved inner wall of the upper semi-arc cylinder, and three sets of lower irregular blocks are fixed to the curved inner wall of the lower semi-arc cylinder. The lower and upper irregular blocks are staggered and form a wavy channel inside the outlet conduit.

[0006] According to some embodiments of the present invention, the top of the base is provided with two sets of clearance grooves at the edge position, and the two sets of arc-shaped clips can be engaged in the clearance grooves.

[0007] According to some embodiments of the present invention, the bottom of the top cover is fixed with two sets of abutments inserted into the relief groove, and the bottom of the abutments is arc-shaped and fits against the outer wall of the upper semi-arc cylinder.

[0008] According to some embodiments of the present invention, both the base and the top cover are equipped with thermally conductive silicone pads, and the outer wall of the thermally conductive silicone pads is provided with a heat-spreading plate connected to the base and the top cover.

[0009] According to some embodiments of this utility model, two sets of ear plates are fixed on the front and rear outer walls of the base, and the top of the ear plates is reserved with long straight grooves for installing bolts.

[0010] According to some embodiments of the present invention, the sealing element includes a rubber strip fixed to the top edge of the base, and a retaining frame is fixed to the bottom of the top cover at a position corresponding to the rubber strip.

[0011] According to some embodiments of this utility model, four sets of positioning cylinders for fixing the circuit board are provided in the base near the inside corner, and the positioning cylinders are used to fix the circuit board with screws.

[0012] The embodiments of this utility model have at least the following beneficial effects: This utility model assembles the circuit board into the base of the waterproof shell, and uses the assembly of the top cover and the base to form a closed space, which effectively prevents external moisture from entering, thus providing reliable waterproof protection for the circuit board. The conduit assembly set on the end face of the waterproof shell has an upper and lower semi-arc cylinder that abuts to form a conduit, and the upper and lower irregularly shaped blocks distributed inside form a wave-shaped channel, which can not only arrange the wires in an orderly manner, but also further prevent moisture from entering the interior of the waterproof shell along the wires.

[0013] In addition, the heat dissipation fins installed on the base and top cover can dissipate the heat generated by the circuit board during operation in a timely manner, avoiding the impact of overheating on the performance and service life of the circuit board. At the same time, the thermally conductive silicone pads and heat dissipation plates installed in the base and top cover can evenly conduct the heat generated by the circuit board, improving heat dissipation efficiency. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the base structure on the circuit board of this utility model; Figure 3 This is a bottom view of the base structure of this utility model; Figure 4 This is a schematic diagram of the unfolded structure of the sealing element of this utility model; Figure 5 This is a schematic diagram of the unfolded structure of the conduit assembly of this utility model; Figure 6This is a schematic diagram of the unfolded structure of the top cover and thermally conductive silicone pad of this utility model.

[0015] 100. Waterproof shell; 110. Base; 111. Clearance groove; 112. Pad; 120. Top cover; 121. Backing plate; 130. Thermally conductive silicone pad; 131. Heat spreader; 140. Circuit board; 150. Ear plate; 160. Seal; 161. Rubber strip; 162. Clip frame; 170. Conduit assembly; 171. Upper semi-arc cylinder; 172. Arc-shaped clip; 173. Lower semi-arc cylinder; 174. Lower irregular block; 175. Upper irregular block; 180. Heat dissipation fins; 190. Mounting groove. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments: like Figures 1 to 6The circuit board waterproof structure shown includes: a waterproof shell 100 and a circuit board 140. The waterproof shell 100 includes a base 110, and a top cover 120 is mounted on the top of the base 110. The circuit board 140 is mounted inside the base 110. The end face of the waterproof shell 100 is provided with two sets of conduit assemblies 170 for discharging wires. The bottom of the base 110 and the top of the top cover 120 are both equipped with heat dissipation fins 180 for heat dissipation. The top of the waterproof shell 100 is provided with a sealing element 160. The conduit assembly 170 includes an upper semi-arc cylinder 171 and a lower semi-arc cylinder 173. The upper semi-arc cylinder 171 and the lower semi-arc cylinder 173 abut against each other to form an outlet conduit. Arc-shaped clips 172 are fixed to the curved outer walls of the upper semi-arc cylinder 171 and the lower semi-arc cylinder 173. Two sets of upper irregular blocks 175 are fixed to the curved inner wall of the upper semi-arc cylinder 171. Three sets of lower irregular blocks 174 are fixed to the curved inner wall of the lower semi-arc cylinder 173. The lower irregular blocks 174 and the upper irregular blocks 175 are distributed in a staggered manner and form a wavy channel inside the outlet conduit.

[0021] The top of the base 110 has two sets of clearance grooves 111 along the edge, and two sets of arc-shaped clips 172 can be engaged in the clearance grooves 111.

[0022] The bottom of the top cover 120 is fixed with two sets of abutment plates 121 inserted into the relief groove 111. The bottom of the abutment plate 121 is arc-shaped and fits against the outer wall of the upper semi-arc cylinder 171.

[0023] The sealing element 160 includes a rubber strip 161 fixed to the top edge of the base 110, and a retaining frame 162 is fixed to the bottom of the top cover 120 at a position corresponding to the rubber strip 161.

[0024] It is worth noting that: pads 112 are fixed at the corners of the bottom of the base 110, and mounting slots for assembling heat dissipation fins 180 are provided on the bottom of the base 110 and the upper surface of the top cover 120. The pad 112 at the bottom of the base 110 can suspend the heat dissipation fins 180 in a suspended state, effectively preventing the heat dissipation fins 180 from deforming due to external forces, protecting the structural integrity of the heat dissipation fins, and thus avoiding the problem of affecting heat dissipation performance due to deformation. The heat spreader 131 is made of metal, specifically copper or aluminum, two common heat-conducting materials; ensuring that heat can be quickly and efficiently conducted to the internal structure of the heat sink 180, thereby achieving efficient heat dissipation.

[0025] The circuit board 140 is completely enclosed in a sealed space formed by the base 110 and the top cover 120, which effectively isolates the circuit board 140 from the corrosion of the external humid environment. This allows the circuit board 140 to maintain normal operation when facing harsh environments such as humidity and water splashes, which greatly improves the reliability and service life of electronic products. Meanwhile, the wavy channel formed by the upper semi-arc cylinder 171 and the lower semi-arc cylinder 173 in the conduit assembly 170 not only facilitates the arrangement and organization of wires but also further enhances the waterproof effect, preventing moisture from seeping into the interior of the waterproof housing 100 through the conduit assembly 170. Furthermore, the sealing element 160 is designed (as per the instruction manual). Figure 2 As shown, the contact surfaces of the base 110 and the top cover 120 are provided with rubber strips 161 and clip frames 16. When the base 110 and the top cover 120 are engaged, they can achieve a double sealing effect and make the connection between the base 110 and the top cover 120 more secure. The cooperation of the rubber strips 161 and the clip frames 162 further ensures the sealing performance of the waterproof shell 100, making the waterproof effect of the entire circuit board better.

[0026] Both the base 110 and the top cover 120 are equipped with thermally conductive silicone pads 130, and the outer wall of the thermally conductive silicone pads 130 is provided with a heat spreader 131 connected to the base 110 and the top cover 120.

[0027] The thermally conductive silicone pad 130 quickly conducts heat from inside the waterproof housing 100 to the heat spreader 131. With its excellent thermal conductivity, the heat spreader 131 evenly distributes and quickly transfers heat to the heat sink 180. The heat sink 180 then exchanges heat efficiently with the surrounding air, effectively reducing the internal temperature of the waterproof housing 100. This prevents localized overheating from damaging the circuit board 140, ensuring that the electronic equipment maintains a stable operating temperature during long-term operation, thereby extending its overall service life.

[0028] Please refer to this carefully. Figure 1 The base 110 has two sets of ear plates 150 fixed on its front and rear outer walls. The top of the ear plates 150 has a long straight groove for installing bolts.

[0029] The use of bolted tubes with long straight grooves securely connects the ear plate 150 to external equipment, facilitating the installation and use of the entire circuit board's waterproof structure.

[0030] Please refer to this carefully. Figure 1 The base 110 has four sets of positioning cylinders near the inside corner for fixing the circuit board 140, and the positioning cylinders use screws to fix the circuit board 140.

[0031] It serves to position the circuit board 140, preventing it from shaking or shifting inside the waterproof housing, and ensuring that the circuit board 140 maintains a stable working state during the operation of the electronic device.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A waterproof structure for a circuit board, characterized in that, include: A waterproof housing (100) and a circuit board (140) are provided. The waterproof housing (100) includes a base (110), and a top cover (120) is mounted on the top of the base (110). The circuit board (140) is mounted inside the base (110). The end face of the waterproof housing (100) is provided with two sets of conduit assemblies (170) for discharging wires. The bottom of the base (110) and the top of the top cover (120) are both equipped with heat dissipation fins (180) for heat dissipation. The top of the waterproof shell (100) is provided with a sealing element (160). The conduit assembly (170) includes an upper semi-arc cylinder (171) and a lower semi-arc cylinder (173). The upper semi-arc cylinder (171) and the lower semi-arc cylinder (173) abut against each other to form an outgoing tube. The curved outer walls of the upper semi-arc cylinder (171) and the lower semi-arc cylinder (173) are both fixed with arc-shaped clips (172). The curved inner wall of the upper semi-arc cylinder (171) is fixed with two sets of upper irregular blocks (175). The curved inner wall of the lower semi-arc cylinder (173) is fixed with three sets of lower irregular blocks (174). The lower irregular blocks (174) and the upper irregular blocks (175) are distributed in a staggered manner and form a wave-shaped channel inside the outgoing tube.

2. The waterproof circuit board structure according to claim 1, characterized in that, The base (110) has two sets of clearance grooves (111) at the top edge, and the two sets of arc-shaped clips (172) can be engaged in the clearance grooves (111).

3. The waterproof circuit board structure according to claim 1, characterized in that, The bottom of the top cover (120) is fixed with two sets of abutments (121) inserted into the relief groove (111). The bottom of the abutments (121) is arc-shaped and fits against the outer wall of the upper semi-arc cylinder (171).

4. The waterproof circuit board structure according to claim 1, characterized in that, Both the base (110) and the top cover (120) are equipped with thermally conductive silicone pads (130), and the outer wall of the thermally conductive silicone pads (130) is provided with heat spreaders (131) connected to the base (110) and the top cover (120).

5. The waterproof circuit board structure according to claim 1, characterized in that, The base (110) has two sets of ear plates (150) fixed on its front and rear outer walls. The top of the ear plates (150) has a long straight groove for installing bolts.

6. The waterproof circuit board structure according to claim 1, characterized in that, The sealing element (160) includes a rubber strip (161) fixed to the top edge of the base (110), and a clip frame (162) is fixed to the bottom of the top cover (120) at the position corresponding to the rubber strip (161).

7. The waterproof circuit board structure according to claim 1, characterized in that, The base (110) has four sets of positioning cylinders near the inside corner for fixing the circuit board (140), and the positioning cylinders use screws to fix the circuit board (140).

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