Moistureproof and antistatic multilayer double-sided circuit board for small household appliances

Abstract

The utility model relates to the technical field of circuit boards, in particular to a moisture-proof and antistatic multilayer double-sided circuit board for small household appliances, which comprises a circuit board, a protective structure is arranged on the circuit board and comprises positioning holes, the circuit board is provided with a plurality of positioning holes, a positioning frame is arranged on the outer side of the circuit board, and the circuit board is provided with a plurality of positioning holes. A plurality of hanging rods are fixedly connected to the inner side of the positioning frame, the ends of the hanging rods are clamped to the circuit board through positioning holes, a first side cover and a second side cover are arranged on the two sides of the circuit board respectively, and damp-proof soft cushions are fixedly connected to the side faces of the first side cover and the second side cover. The first side cover and the second side cover abut against the positioning frame through the damp-proof soft cushion. By additionally arranging the moisture-proof soft cushion outside the circuit board and sealing the circuit board, normal connection of the lead is ensured, meanwhile, damp air is prevented from making direct contact with the circuit board, meanwhile, the influence of static electricity is greatly reduced through sealing protection on the circuit board, and the service life of the circuit board is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of multilayer double-sided circuit board, specifically to a kind of moisture-proof antistatic small household appliance multilayer double-sided circuit board, belong to circuit board technical field. BACKGROUND

[0002] Double-sided board is a middle layer medium, both sides are wiring layer. Multilayer board is multiple wiring layer, medium layer between every two layers, medium layer can be very thin. Multilayer circuit board has at least three conductive layers, two layers are on the outer surface, and the remaining layer is synthesized in the insulating board. Electrical connection between them is usually realized through plated through hole on the cross section of the circuit board.

[0003] However, for some existing circuit boards inside small household appliances, due to the working environment of small household appliances may be relatively humid, etc., so that these circuit boards need to have certain moisture-proof and antistatic ability, the existing circuit board in small household appliances is often directly exposed and fixed, so that its moisture-proof and antistatic ability is poor, which will affect the service life of small household appliances. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of moisture-proof antistatic small household appliance multilayer double-sided circuit boards to solve the above problems, by increasing moisture-proof soft pad outside circuit board and sealing it, guarantee the normal connection of lead wire, while avoiding humid air directly with circuit board contact, while the sealing protection of circuit board greatly reduces the influence of static electricity, effectively improves the service life of circuit board.

[0005] The utility model discloses a kind of moisture-proof antistatic small household appliance multilayer double-sided circuit boards to solve the above problems, by increasing moisture-proof soft pad outside circuit board and sealing it, guarantee the normal connection of lead wire, while avoiding humid air directly with circuit board contact, while the sealing protection of circuit board greatly reduces the influence of static electricity, effectively improves the service life of circuit board.

[0006] Preferably, the positioning hole is provided with four, four positioning holes are respectively arranged at the four corner positions of the circuit board, and the inner hollow area of the positioning frame is greater than the surface area of the circuit board.

[0007] Preferably, the side of the first side cover and the second side cover is fixedly connected with the first spring, and the end of the first spring is fixedly connected with the gasket.

[0008] Preferably, a fastening screw is rotatably connected to the washer, and the end of the fastening screw passes through the first side cover, the positioning frame, and the second side cover in sequence.

[0009] Preferably, the opening and closing structure includes a sealing cover, and the sealing cover is slidably connected to the side of the first side cover, the area of ​​which is equal to the surface area of ​​the circuit board.

[0010] Preferably, a second spring is fixedly connected to one side of the sealing cover, and an abutment block is fixedly connected to the end of the second spring.

[0011] Preferably, the inner side of the abutment block is provided with a mating groove, and the abutment block abuts against the end of the corresponding hanging rod through the mating groove.

[0012] Preferably, the first side cover is rotatably connected to two fixing buckles, which are respectively located on opposite sides of the first side cover.

[0013] Preferably, the end of the fixing buckle has a cam-shaped structure, and the end of the fixing buckle abuts against the side of the sealing cover.

[0014] The beneficial effects of this utility model are as follows: a positioning hole is provided on the circuit board, and the hanging rod on the positioning frame fixes the circuit board in the middle of the positioning frame through the positioning hole, thereby reducing the direct contact between the circuit board and other components during installation and reducing the possible impact of static electricity. At the same time, a first side cover and a second side cover are respectively provided on both sides of the positioning frame for sealing, and a moisture-proof soft pad is provided between the first side cover, the second side cover and the positioning frame, which greatly reduces the direct contact between the circuit board and the external humid air, thereby avoiding corrosion of the circuit solder joints on the circuit board and improving the service life of the circuit board. At the same time, the soft material of the moisture-proof soft pad will not interfere with the lead-out of the wires, and at the same time ensures the sealing effect inside the side cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 The diagram shows the connection structure between the first side cover and the positioning frame;

[0017] Figure 3 for Figure 2 The diagram shows the connection structure between the circuit board and the first side cover.

[0018] Figure 4 for Figure 2 The diagram shows the connection structure between the first and second side covers.

[0019] Figure 5 for Figure 4The enlarged structure schematic view of part A is shown.

[0020] In the figure: 1, circuit board; 2, protection structure; 201, first side cover; 202, positioning frame; 203, moisture-proof soft pad; 204, fastening screw; 205, first spring; 206, second side cover; 207, washer; 208, positioning hole; 209, hanging rod; 3, opening and closing structure; 301, sealing cover; 302, fixed buckle; 303, abutting block; 304, second spring; 305, matching groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 As shown in the figure, a kind of moisture-proof antistatic small household appliance multilayer double-sided circuit board, including circuit board, the circuit board is equipped with protection structure, the protection structure includes positioning hole 208, the circuit board 1 is equipped with a plurality of positioning holes 208, the outer side of the circuit board 1 is equipped with positioning frame 202, the inner side of the positioning frame 202 is fixedly connected with a plurality of hanging rods 209, the end of the hanging rod 209 is clamped with the circuit board 1 through positioning hole 208, the two sides of the circuit board 1 are equipped with first side cover 201 and second side cover 206 respectively, the side of the first side cover 201 and second side cover 206 is fixedly connected with moisture-proof soft pad 203, the first side cover 201 and second side cover 206 are abutted with positioning frame 202 by moisture-proof soft pad 203, the side of the first side cover 201 is equipped with opening and closing structure 3.

[0023] As a technical optimization scheme of the utility model, four positioning holes 208 are arranged at four corners of the circuit board 1, the stability of fixing the circuit board 1 is improved by the four positioning holes 208 and the hanging rod 209, the inside hollow area of the positioning frame 202 is greater than the surface area of the circuit board 1, the first side cover 201 and the second side cover 206 are fixedly connected with the first spring 205 on the side, the end of the first spring 205 is fixedly connected with the gasket 207, the gasket 207 is rotatably connected with the fastening screw 204, the end of the fastening screw 204 penetrates the first side cover 201, the positioning frame 202 and the second side cover 206 in sequence, when the fastening screw 204 is used for fixing the circuit board 1, when the fastening screw 204 is fixed between the household appliance, because the fastening screw 204 penetrates the first side cover 201, the positioning frame 202 and the second side cover 206 in sequence, with the fastening screw 204 being continuously tightened, the first spring 205 on both sides is gradually contracted, and the pressure between the first side cover 201, the second side cover 206 and the positioning frame 202 is increased, and the sealing effect of the moisture-proof cushion 203 is improved.

[0024] As a technical optimization scheme of the utility model, the opening and closing structure 3 includes a sealing cover 301, the side surface of the first side cover 201 is slidably connected with the sealing cover 301, the area of the sealing cover 301 is equal to the surface area of the circuit board 1, one side of the sealing cover 301 is fixedly connected with the second spring 304, the end of the second spring 304 is fixedly connected with the abutting block 303, the inside of the abutting block 303 is provided with a matching groove 305, the end of the abutting block 303 is abutted with the corresponding hanging rod 209 through the matching groove 305, the sealing cover 301 is taken down, so that the surface of the circuit board 1 is quickly viewed, the household appliance is conveniently overhauled and maintained, when the sealing cover 301 is in the closed state, the abutting block 303 in the inside of the sealing cover 301 is matched with the end of the hanging rod 209, the fixing effect of the circuit board 1 is improved, and the stability of the circuit board 1 is improved, two fixed buckles 302 are rotatably connected on the first side cover 201, the two fixed buckles 302 are arranged at opposite sides of the first side cover 201, the end of the fixed buckle 302 is in a cam structure, the end of the fixed buckle 302 is abutted with the side surface of the sealing cover 301, in order to conveniently fix and take down the sealing cover 301, the two sides of the sealing cover 301 are fixed through the fixed buckle 302, the pushing effect of the inside second spring 304 is matched, so that the sealing cover 301 is in the fixed state, when the sealing cover 301 needs to be taken down, the end of the fixed buckle 302 is only removed, so that the sealing cover 301 is released, and the use is convenient.

[0025] The utility model discloses a circuit board fixing device for household electrical appliances, which comprises a positioning frame (202), a first side cover (201), a second side cover (206), a fastening screw (204), a sealing cover (301), a fixed buckle (302) and a second spring (304).

[0026] It is apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments but can be implemented in other ways without departing from the spirit or essential characteristics of the utility model. The embodiments are considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No limitation is intended to the details of the illustrated construction except as can be expressly recited in the claims.

[0027] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A moisture resistant, antistatic, multi-layer, double-sided circuit board for small household appliances, comprising a circuit board (1), characterized in that: The circuit board (1) is provided with a protection structure (2), the protection structure (2) includes positioning hole (208), the circuit board (1) is provided with a plurality of positioning hole (208), the outer side of the circuit board (1) is provided with positioning frame (202), the inner side of the positioning frame (202) is fixedly connected with a plurality of hanging rod (209), the end of the hanging rod (209) is clamped with the circuit board (1) through the positioning hole (208), the two sides of the circuit board (1) are respectively provided with first side cover (201) and second side cover (206), the side of the first side cover (201) and the second side cover (206) is fixedly connected with the moisture-proof soft pad (203), the first side cover (201) and the second side cover (206) are in contact with the positioning frame (202) through the moisture-proof soft pad (203), the side of the first side cover (201) is provided with opening and closing structure (3).

2. The moisture-proof and antistatic multi-layer double-sided circuit board for small household appliances according to claim 1, characterized in that: The positioning hole (208) is provided with four, four positioning holes (208) are respectively arranged at the four corners of the circuit board (1), and the inner hollow area of the positioning frame (202) is larger than the surface area of the circuit board (1).

3. The moisture-proof and antistatic multi-layer double-sided circuit board for small household appliances according to claim 1, characterized in that: The side of the first side cover (201) and the second side cover (206) is fixedly connected with the first spring (205), and the end of the first spring (205) is fixedly connected with the gasket (207).

4. The moisture-proof and antistatic multi-layer double-sided circuit board of a small household appliance according to claim 3, characterized in that: The gasket (207) is rotatably connected with a fastening screw (204), and the end of the fastening screw (204) penetrates the first side cover (201), the positioning frame (202) and the second side cover (206) in sequence.

5. The moisture-proof and antistatic multi-layer double-sided circuit board for small household appliances according to claim 1, characterized in that: The opening and closing structure (3) includes a sealing cover (301), and the side of the first side cover (201) is slidably connected with the sealing cover (301), and the area of the sealing cover (301) is equal to the surface area of the circuit board (1).

6. The moisture-proof and antistatic multi-layer double-sided circuit board of a small household appliance according to claim 5, characterized in that: One side of the sealing cover (301) is fixedly connected with a second spring (304), and the end of the second spring (304) is fixedly connected with a contact block (303).

7. The moisture-proof and antistatic multi-layer double-sided circuit board of a small household appliance according to claim 6, characterized in that: The inner side of the contact block (303) is provided with a matching groove (305), and the end of the contact block (303) is in contact with the corresponding hanging rod (209) through the matching groove (305).

8. The moisture-proof and antistatic multi-layer double-sided circuit board of a small household appliance according to claim 5, characterized in that: Two fixed buckles (302) are rotatably connected on the first side cover (201), and the two fixed buckles (302) are respectively arranged on the opposite sides of the first side cover (201).

9. The moisture-proof and antistatic multi-layer double-sided circuit board of a small household appliance according to claim 8, characterized in that: The end of the fixed buckle (302) is in cam structure, and the end of the fixed buckle (302) is in contact with the side of the sealing cover (301).

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