Waterproof structure of circuit board

Abstract

The utility model belongs to the technical field of circuit boards, and particularly relates to a waterproof structure of a circuit board, which comprises a waterproof base, fixing blocks arranged on two sides of the bottom of the waterproof base, a circuit board main body arranged inside the waterproof base, a sealing cover movably connected to the top of the waterproof base, and heat dissipation assemblies arranged on the bottom of the waterproof base and the top of the sealing cover. A lock catch assembly is movably connected to the surface of one side of the waterproof base, a sealing protruding block is arranged at the top end of the waterproof base, a wire outlet pipe is fixedly arranged on one side of the waterproof base, and a positioning boss is fixedly connected into the waterproof base. According to the utility model, the sealing convex block at the top of the waterproof base is clamped with the sealing groove at the bottom of the sealing cover, the sealing convex block is inserted into the sealing groove and is matched with the internal sealing gasket for sealing, and meanwhile, the lock catch assembly and the locking groove of the lock catch assembly are used for automatically locking and closing the sealing cover; and the two sides of the interior are tightly attached to the bottom and the top of the circuit board main body through heat dissipation, so that the heat dissipation effect is effectively guaranteed while the sealing waterproof performance is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a waterproof structure for a circuit board. Background Technique

[0002] A circuit board, also known as a printed circuit board, is a board-like material used for supporting and connecting 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] In some existing electronic devices, such as hair dryers, in order to prevent the user from accidentally dropping it into the bathtub during use, the circuit board is generally provided with a protective cover similar to a sealed waterproof structure. When used for a long time, the heat inside the protective cover cannot be effectively removed, which easily affects the service life of the circuit board. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a waterproof structure for a circuit board, which solves the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A waterproof structure for a circuit board includes a waterproof base. Fixed blocks are arranged on both sides of the bottom of the waterproof base. A circuit board main body is arranged inside the waterproof base. A sealing cover is movably connected to the top of the waterproof base. A heat dissipation component is arranged between the bottom of the waterproof base and the top of the sealing cover. A lock component is movably connected to one side surface of the waterproof base. A sealing convex block is arranged at the top end of the waterproof base. An outlet pipe is fixedly arranged on one side of the waterproof base. A positioning boss is fixedly connected inside the waterproof base;

[0007] The heat dissipation component includes heat dissipation fins arranged outside the sealing cover. A heat spreader is fixedly connected to one side of the heat dissipation fins. A thermal conductive silicone pad is fixedly connected to the bottom of the heat spreader;

[0008] An activity groove is opened inside the sealing convex block. One end of a spring rod is fixedly connected to the inside of one side of the lock component, and the other end of the spring rod is fixedly connected to the activity groove. A locking hook is arranged on one side of the top of the lock component. The locking hook is movably connected to the activity groove through the spring rod.

[0009] As a preferred technical solution of the utility model, a sealing groove is opened at the bottom of the sealing cover. A locking groove is opened on the inner surface of one side of the sealing groove. The locking hook and the locking groove are arranged in correspondence.

[0010] As a preferred technical solution of the present utility model, mounting holes are penetrated through the top surface of the circuit board main body, a protective ring is fixedly connected to the outside of the mounting holes, and the circuit board main body is clamped with a positioning boss through the protective ring.

[0011] As a preferred technical solution of the present utility model, the number of the spring rods is set to two groups and is symmetrically arranged.

[0012] As a preferred technical solution of the present utility model, the waterproof base is clamped with a sealing groove at the bottom of the sealing cover through a sealing convex block, and sealing washers are fixedly connected to both sides inside the sealing groove.

[0013] As a preferred technical solution of the present utility model, the wire outlet pipe is made of elastic rubber material, a necking structure is arranged inside the wire outlet pipe, and the number is set to two groups.

[0014] Compared with the prior art, the present utility model provides a waterproof structure for a circuit board, which has the following beneficial effects:

[0015] For the waterproof structure of the circuit board, by clamping the sealing convex block at the top of the waterproof base with the sealing groove at the bottom of the sealing cover, inserting the sealing convex block into the sealing groove, cooperating with the internal sealing gasket for sealing, and at the same time, the locking hook and its locking groove, the two groups of symmetrically arranged spring rods can drive the locking hook to reset stably and automatically clamp the corresponding locking groove, so as to lock and close the sealing cover, and the heat-conducting silica gel pad inside the sealing cover is tightly attached to the top of the circuit board main body, and the heat-conducting silica gel pad inside the waterproof base is tightly attached to the bottom of the circuit board main body, effectively ensuring the sealing and waterproof performance while effectively ensuring its heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall open structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the structure of the waterproof base and the circuit board main body of the present utility model;

[0018] Figure 3 is a schematic diagram of the waterproof base structure of the present utility model;

[0019] Figure 4 is a three-dimensional structure schematic diagram of the sealing cover of the present utility model

[0020] Figure 5 is a three-dimensional structure schematic diagram of the circuit board main body of the present utility model

[0021] Figure 6 is a three-dimensional structure schematic diagram of the inner wall of the lock assembly of the present utility model

[0022] Figure 7 is a schematic diagram of the internal structure of the wire outlet pipe of the present utility model.

[0023] In the figure: 1. Waterproof base; 2. Fixed block; 3. Main body of circuit board; 301. Protective ring; 4. Sealing cover; 401. Sealing groove; 402. Locking groove; 5. Heat dissipation component; 501. Heat dissipation fins; 502. Heat pipe; 503. Thermal conductive silicone pad; 6. Locking component; 601. Spring rod; 602. Locking hook; 7. Sealing bump; 701. Moving groove; 8. Wire outlet pipe; 9. Positioning boss. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-3 , in this embodiment: A waterproof structure for a circuit board includes a waterproof base 1. Fixed blocks 2 are provided on both sides of the bottom of the waterproof base 1. A main body of the circuit board 3 is arranged inside the waterproof base 1. A sealing cover 4 is movably connected to the top of the waterproof base 1. A heat dissipation component 5 is arranged between the bottom of the waterproof base 1 and the top of the sealing cover 4. A locking component 6 is movably connected to one side surface of the waterproof base 1. A sealing bump 7 is arranged at the top end of the waterproof base 1. A wire outlet pipe 8 is fixedly arranged on one side of the waterproof base 1. A positioning boss 9 is fixedly connected inside the waterproof base 1;

[0026] Please refer to Figure 4 , in this embodiment, mounting holes are penetrated through the top surface of the main body of the circuit board 3. A protective ring 301 is fixedly connected outside the mounting holes to prevent damage to the circuit board during installation. The main body of the circuit board 3 is clamped with the positioning boss 9 through the protective ring 301, facilitating the quick installation and positioning of the main body of the circuit board 3.

[0027] Please refer to Figure 1 And Figure 5 , in this embodiment, the heat dissipation component 5 includes heat dissipation fins 501 arranged outside the sealing cover 4. A heat pipe 502 is fixedly connected to one side of the heat dissipation fins 501. A thermal conductive silicone pad 503 is fixedly connected to the bottom of the heat pipe 502. The heat is evenly introduced into the heat pipe 502 through the thermal conductive silicone pad 503 to reduce the temperature. Cooperating with the heat dissipation fins 501 outside the heat pipe 502, the heat dissipation area is increased and the heat dissipation efficiency is improved;

[0028] Furthermore, a heat dissipation component 5 is arranged between the bottom of the waterproof base 1 and the top of the sealing cover 4, and heat dissipation is carried out through both sides, further improving the heat dissipation efficiency.

[0029] Please refer to Figures 5-6, in this embodiment, an activity groove 701 is formed inside the sealing bump 7. One end of a spring rod 601 is fixedly connected to the inside of one side of the latch assembly 6, and the other end of the spring rod 601 is fixedly connected to the activity groove 701. A locking hook 602 is arranged on one side of the top of the latch assembly 6. The locking hook 602 is movably connected to the activity groove 701 through the spring rod 601. A sealing groove 401 is formed at the bottom of the sealing cover 4. A locking groove 402 is formed on the surface of the inner wall of one side of the sealing groove 401. The locking hook 602 and the locking groove 402 are arranged in correspondence. The two symmetrically arranged spring rods 601 can drive the locking hook 602 to reset stably. When the sealing cover 4 is closed, it automatically catches the corresponding locking groove 402. Pressing the latch assembly 6 can drive the locking hook 602 to contract, realizing the quick locking and disassembly of the sealing cover 4 and the waterproof base 1;

[0030] Furthermore, sealing washers are fixedly connected to both sides inside the sealing groove 401. When the waterproof base 1 is clamped with the sealing groove 401 at the bottom of the sealing cover 4 through the sealing bump 7, the inner sealing washers are held against, improving the sealing performance of the connection.

[0031] Please refer to Figure 7 , in this embodiment, the wire outlet pipe 8 is made of elastic rubber. A necking structure is arranged inside the wire outlet pipe 8, and the number is two groups. The elastic necking structure tightens connection wires of different sizes, and the double-layer arrangement further improves the sealing performance.

[0032] The working principle and usage process of the present utility model: During installation, first, the protective ring 301 in the mounting holes on the surface of the circuit board main body 3 is caught with the positioning boss 9. The bottom of the circuit board main body 3 is closely attached to the heat-conducting silicone pad 503 inside the waterproof base 1, fixing the circuit board main body 3 inside the waterproof base 1. Then, the protective ring 301 and the positioning boss 9 are fixed by bolts. After installation, the connection wires pass through the wire outlet pipe 8, and then the sealing cover 4 is covered on the waterproof base 1. The waterproof base 1 is clamped with the sealing groove 401 at the bottom of the sealing cover 4 through the sealing bump 7. The sealing bump 7 is inserted into the sealing groove 401. The locking hook 602 first contracts due to the pressure. When it is completely closed, the locking hook 602 and the corresponding locking groove 402. The two symmetrically arranged spring rods 601 can drive the locking hook 602 to reset stably, automatically catching the corresponding locking groove 402, thereby locking and closing the sealing cover 4. At the same time, the heat-conducting silicone pad 503 inside the sealing cover 4 is closely attached to the top of the circuit board main body 3, and the sealing bump 7 holds against the inner sealing pad inside the sealing groove 401, effectively ensuring the sealing and waterproof performance while ensuring its heat dissipation effect.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waterproof structure for a circuit board, comprising a waterproof base (1), characterized in that: On both sides of the bottom of the waterproof base (1), there are fixed blocks (2). Inside the waterproof base (1), there is a main circuit board (3). The top of the waterproof base (1) is movably connected to a sealing cover (4). Between the bottom of the waterproof base (1) and the top of the sealing cover (4), there is a heat dissipation component (5). On one side surface of the waterproof base (1), there is a movably connected lock component (6). At the top end of the waterproof base (1), there is a sealing convex block (7). On one side of the waterproof base (1), there is a fixedly arranged wire outlet pipe (8). Inside the waterproof base (1), there is a fixedly connected positioning boss (9); The heat dissipation component (5) includes heat dissipation fins (501) arranged on the outer side of the sealing cover (4). On one side of the heat dissipation fins (501), there is a fixedly connected heat spreader (502). At the bottom of the heat spreader (502), there is a fixedly connected thermal silicone pad (503); Inside the sealing convex block (7), there is an activity groove (701). One end of a spring rod (601) is fixedly connected to the inside of one side of the lock component (6). The other end of the spring rod (601) is fixedly connected to the activity groove (701). On one side at the top of the lock component (6), there is a locking hook (602). The locking hook (602) is movably connected to the activity groove (701) through the spring rod (601).

2. The waterproof structure of a circuit board according to claim 1, wherein: At the bottom of the sealing cover (4), there is a sealing groove (401). On the inner wall surface of one side of the sealing groove (401), there is a locking groove (402). The locking hook (602) is arranged corresponding to the locking groove (402).

3. A waterproof structure for a circuit board according to claim 1, characterized in that: On the top surface of the main circuit board (3), there are through - set installation holes. Outside the installation holes, there is a fixedly connected protective ring (301). The main circuit board (3) is snap - connected to the positioning boss (9) through the protective ring (301).

4. A waterproof structure for a circuit board according to claim 1, characterized in that: The number of the spring rods (601) is set to two groups and is symmetrically arranged.

5. The waterproof structure of a circuit board according to claim 2, wherein: The waterproof base (1) is snap - connected to the sealing groove (401) at the bottom of the sealing cover (4) through the sealing convex block (7). On both sides inside the sealing groove (401), there are fixedly connected sealing washers.

6. The waterproof structure of a circuit board according to claim 1, wherein: The wire outlet pipe (8) is made of elastic rubber material. Inside the wire outlet pipe (8), there is a constriction structure, and the number is set to two groups.

Images