Washable electric appliance circuit board

Abstract

The utility model belongs to the technical field of electric appliance parts, and particularly relates to a washable electric appliance circuit board, which comprises a clamping plate, a connecting column and an epoxy resin glue pouring layer, a springing groove is arranged on one side of the clamping plate, spring columns are fixedly connected to the outer wall of the springing groove in an array manner, and the springing groove is elastically connected with a protective plate through the spring columns; the epoxy resin potting layer is fixedly assembled on one side of the protective plate, connecting rods are fixedly connected to the two sides of the corner of the epoxy resin potting layer, the epoxy resin potting layer is fixedly connected with a connecting block through the connecting rods, and a soft sheet is fixedly connected to one side of the connecting block; according to the utility model, the epoxy resin potting layer with waterproof performance can be protected, the epoxy resin potting layer is prevented from being collided and broken in the transportation or installation process, and water vapor is prevented from entering the epoxy resin potting layer from cracks to erode and damage the circuit board; and the original heat dissipation performance of the epoxy resin potting layer is not influenced while protection is carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical components, and in particular relates to a water-washable electrical circuit board. Background Art

[0002] Circuit board is also called circuit board. Circuit board makes the circuit miniaturized and intuitive. It plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Epoxy resin potting is currently the most common circuit board waterproofing process. It is used for the potting of electronic product modules. The entire PCB board can be wrapped in it, thereby playing the role of waterproofing, moisture-proof, salt spray-proof, and mildew-proof. Epoxy resin is a saturated resin. The epoxy resin potting glue produced with it as the base material has the characteristics of high body strength, strong adhesion, good weather resistance, low shrinkage, high insulation strength, non-toxic and environmentally friendly. Due to the good thermal conductivity of the potting glue, it is helpful for heat dissipation after potting of power circuit boards.

[0003] The circuit boards in the prior art are waterproofed by epoxy resin potting. However, after the epoxy resin is cured, the colloid is hard and brittle, and has high mechanical stress. When it is bumped during transportation, it is easy to damage electronic components or cause cracks in the potting layer. Once the colloid cracks, the waterproof performance of the entire potting layer will be greatly reduced. At the same time, water vapor and moisture will also enter the interior of the colloid along the cracks, causing a short circuit in the circuit board. Utility Model Content

[0004] The purpose of the utility model is to provide a washable electrical circuit board, which can protect the epoxy resin glue layer with waterproof performance, prevent the epoxy resin glue layer from being knocked and cracked during transportation or installation, and avoid water vapor and moisture entering the epoxy resin glue layer from the cracks to corrode and damage the circuit board, and at the same time will not affect the original heat dissipation performance of the epoxy resin glue layer.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A washable electrical circuit board, comprising a clamping plate, a connecting column and an epoxy resin glue layer, wherein one side of the clamping plate is provided with an elastic groove, an outer wall of the elastic groove is fixedly connected with a spring column in an array, and the elastic groove is elastically connected with a guard plate through the spring column;

[0007] The epoxy resin potting layer is fixedly assembled on one side of the guard plate, and connecting rods are fixedly connected on both sides of the corners of the epoxy resin potting layer. The epoxy resin potting layer is fixedly connected to a connecting block through the connecting rods, and a soft film is fixedly connected to one side of the connecting block. The two connecting blocks are fixedly connected by heat sinks arranged in an array, and the soft film is slidably connected to the connecting column.

[0008] The splints are arranged in a group which is symmetrically distributed, and each group consists of two splints.

[0009] The connecting columns are fixedly connected between the two clamping plates in an array.

[0010] A heat dissipation hole is formed in an array through the middle of the elastic groove.

[0011] The guard plate is provided with heat dissipation holes in an array.

[0012] The inside of the epoxy resin potting layer is integrally cast and wrapped with a circuit board.

[0013] The technical effect achieved by the utility model is that it can protect the epoxy resin potting layer with waterproof performance, prevent the epoxy resin potting layer from being bumped and cracked during transportation or installation, and prevent water vapor and moisture from entering the epoxy resin potting layer through cracks to corrode and damage the circuit board, and at the same time will not affect the original heat dissipation performance of the epoxy resin potting layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall appearance diagram of a washable electrical circuit board provided by an embodiment of the utility model;

[0015] Figure 2 This is a structural disassembly diagram of a washable electrical circuit board provided in an embodiment of the utility model.

[0016] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Clamp; 101. Heat dissipation hole 1; 102. Connecting column; 103. Guard plate; 104. Heat dissipation hole 2; 105. Spring column; 106. Spring groove; 2. Epoxy resin glue layer; 201. Connecting block; 202. Heat sink; 203. Film; 204. Circuit board; 205. Connecting rod. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0020] like Figure 1-3As shown, a washable electrical circuit board includes a clamping plate 1, a connecting column 102 and an epoxy resin glue layer 2, the clamping plates 1 are arranged as a group of symmetrical distribution, each group consists of two pieces, the connecting column 102 is fixedly connected between the two clamping plates 1 in an array, an elastic groove 106 is provided on one side of the clamping plate 1, a heat dissipation hole 101 is provided in an array through the middle of the elastic groove 106, a spring column 105 is fixedly connected to the outer wall of the elastic groove 106 in an array, the elastic groove 106 is elastically connected to a guard plate 103 through the spring column 105, and a heat dissipation hole 2 104 is provided in an array through the body of the guard plate 103;

[0021] Refer to the attached Figure 1-3 The epoxy resin potting layer 2 is fixedly assembled on one side of the protective plate 103, and connecting rods 205 are fixedly connected on both sides of the corners of the epoxy resin potting layer 2. The epoxy resin potting layer 2 is fixedly connected to the connecting block 201 through the connecting rod 205. A soft film 203 is fixedly connected to one side of the connecting block 201. The two connecting blocks 201 are fixedly connected through an array-arranged heat sink 202. The soft film 203 is slidably connected to the connecting column 102, and the interior of the epoxy resin potting layer 2 is integrally cast and wrapped with a circuit board 204.

[0022] According to the above structure, the two clamping plates 1 are fixedly connected by the connecting column 102. When the circuit board 204 is shaken by external force, the circuit board 204 and the epoxy resin glue layer 2 slide adaptively through the connection between the soft film 203 and the connecting column 102. Due to the soft connection characteristics of the soft film 203, the impact force generated by the vibration can be better dealt with to avoid the rigid connection causing the epoxy resin glue layer 2 to break. The guard plate 103 is elastic in the elastic groove 106 through the contraction of the spring column 105, and the epoxy resin glue layer 2 is elastically moved to the left. The impact force of the right shaking is removed, and the heat dissipation hole 2 104, the heat dissipation hole 101 and the heat sink 202 all assist in dissipating the heat of the epoxy resin potting layer 2. The utility model can protect the epoxy resin potting layer 2 with waterproof performance, prevent the epoxy resin potting layer 2 from being bumped and cracked during transportation or installation, and prevent water vapor from entering the epoxy resin potting layer 2 from the cracks to corrode and damage the circuit board 204, and at the same time will not affect the original heat dissipation performance of the epoxy resin potting layer 2.

[0023] The working principle of the utility model is as follows: the two clamping plates 1 are fixedly connected by the connecting column 102. When the circuit board 204 is vibrated and shaken by external force, the circuit board 204 and the epoxy resin glue layer 2 slide adaptively through the connection between the soft film 203 and the connecting column 102. Due to the soft connection characteristics of the soft film 203, the impact force generated by the vibration can be better coped with to avoid the rigid connection causing the epoxy resin glue layer 2 to rupture. The guard plate 103 is bounced in the elastic groove 106 by the contraction of the spring column 105 to remove the impact force of the epoxy resin glue layer 2 shaking left and right. The heat dissipation hole 2 104, the heat dissipation hole 1 101 and the heat sink 202 all assist in dissipating the heat of the epoxy resin glue layer 2.

[0024] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A washable electrical circuit board, comprising a clamping plate (1), a connecting column (102) and an epoxy resin glue layer (2), characterized in that: One side of the clamping plate (1) is provided with an elastic groove (106), the outer wall of the elastic groove (106) is fixedly connected with spring columns (105) in an array, and the elastic groove (106) is elastically connected with a guard plate (103) via the spring columns (105); The epoxy resin glue potting layer (2) is fixedly assembled on one side of the guard plate (103), and connecting rods (205) are fixedly connected to both sides of the corners of the epoxy resin glue potting layer (2), and the epoxy resin glue potting layer (2) is fixedly connected to a connecting block (201) through the connecting rod (205), and a soft film (203) is fixedly connected to one side of the connecting block (201), and the two connecting blocks (201) are fixedly connected through heat sinks (202) arranged in an array, and the soft film (203) is slidably connected to the connecting column (102).

2. A washable electrical circuit board according to claim 1, characterized in that: The splints (1) are arranged in a group that is symmetrically distributed, with each group consisting of two pieces.

3. The washable electrical circuit board according to claim 1, characterized in that: The connecting columns (102) are fixedly connected between the two clamping plates (1) in an array.

4. The washable electrical circuit board according to claim 1, characterized in that: A heat dissipation hole (101) is arranged in an array through the middle of the elastic groove (106).

5. The washable electrical circuit board according to claim 1, characterized in that: The guard plate (103) is provided with heat dissipation holes (104) in an array pattern throughout its periphery.

6. The washable electrical circuit board according to claim 1, characterized in that: The inside of the epoxy resin potting layer (2) is integrally cast and wrapped with a circuit board (204).

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