Waterproof printed circuit board structure of electric pressure cooker

Abstract

The utility model discloses a waterproof printed circuit board structure of an electric pressure cooker, which comprises a waterproof cover of the electric pressure cooker, a waterproof circuit box body and a circuit board, a pressure cooker operation panel is arranged at the top of the waterproof cover of the electric pressure cooker, and a connecting underframe is arranged below the waterproof cover of the electric pressure cooker. A plurality of groups of connecting positioning holes are formed in the waterproof cover of the electric pressure cooker, a plurality of groups of fixed connecting columns are arranged on the inner side of the connecting bottom frame, the plurality of groups of connecting positioning holes correspond to the plurality of groups of fixed connecting columns one to one, and the plurality of groups of connecting positioning holes are in bolted connection with the plurality of groups of fixed connecting columns; the circuit waterproof box body is arranged between the waterproof machine cover of the electric pressure cooker and the connecting bottom frame, the circuit waterproof box body comprises a sealing top cover and a connecting box body, and the circuit board is connected between the sealing top cover and the connecting box body, so that water vapor can be effectively prevented from entering the circuit board, power can be cut off in time after water enters the circuit board accidentally, and the service life of the circuit board is prolonged. Therefore, the safety of the circuit board is protected and electric appliance damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pressure cookers, in particular to a waterproof printed circuit board structure of an electric pressure cooker. Background Art

[0002] Electric pressure cooker is an upgraded product of traditional electric pressure cooker. It is easy to operate, multi-functional, time-saving, energy-saving and environmentally friendly. It is a smart kitchen appliance. However, if it is operated improperly, the water vapor in the electric pressure cooker may leak to the circuit board, which may cause damage to the appliance.

[0003] The patent with application number CN200720058534.5 retrieved proposes an electric pressure cooker with a cover closing reliability protection function, which can provide an electric pressure cooker that is easy to use and safe.

[0004] Similar to the above-mentioned electric pressure cooker with lid closing reliability protection function, although it can provide an easy-to-use and safe electric pressure cooker, its circuit board part does not have a waterproof structure. During use, the circuit board may be damaged by water, thereby damaging the appliance and possibly causing accidents.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a waterproof printed circuit board structure of an electric pressure cooker is proposed, in order to achieve a more practical purpose. Utility Model Content

[0006] The utility model aims to provide a waterproof printed circuit board structure for an electric pressure cooker, so as to solve the problem that an existing electric pressure cooker with a cover-locking reliability protection function is provided in the above background, but its circuit board part does not have a waterproof structure, which may cause the circuit board to be damaged by water during use, thereby damaging the electrical appliance and possibly causing accidents.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof printed circuit board structure of an electric pressure cooker, comprising a waterproof cover of the electric pressure cooker, a waterproof circuit box body and a circuit board, a pressure cooker operation panel is arranged on the top of the waterproof cover of the electric pressure cooker, and a connecting chassis is arranged below the waterproof cover of the electric pressure cooker, a plurality of groups of connecting positioning holes are arranged on the waterproof cover of the electric pressure cooker, a plurality of groups of fixed connecting columns are arranged on the inner side of the connecting chassis, and the plurality of groups of connecting positioning holes and the plurality of groups of fixed connecting columns correspond to each other one by one, and the plurality of groups of connecting positioning holes are bolted to the plurality of groups of fixed connecting columns, the waterproof circuit box body is arranged between the waterproof cover of the electric pressure cooker and the connecting chassis, the waterproof circuit box body comprises a sealing top cover and a connecting box body, and the circuit board is connected between the sealing top cover and the connecting box body.

[0008] Preferably, a waterproof plug-in block is provided at a central position of one side of the connection base frame, a connecting wire is connected inside the waterproof plug-in block, and a wiring hole is provided on a side of the waterproof plug-in block away from the connecting wire.

[0009] Preferably, a connection plug-in block is connected below the sealing top cover, and the sealing top cover is plugged into the connection box through the connection plug-in block, and a sealing strip is provided at the connection between the connection plug-in block and the connection box.

[0010] Preferably, a connection slot is provided on one side of the circuit waterproof box body, and the waterproof plug-in block and the connection slot are interlocked with each other, two groups of copper wire square frames are provided on the outer side of the circuit board, and the two groups of copper wire square frames are bonded and connected by hot-melt adhesive.

[0011] Preferably, a plurality of groups of circuit elements are arranged on the circuit board, and a waterproof coating is applied on the circuit elements. A protection circuit is arranged on one side of the circuit board, and an electronic switch is arranged on the protection circuit.

[0012] Preferably, connecting wires are connected between the protection circuit and the two groups of copper wire frames as well as the electronic switch and the circuit board, and the connecting wires pass through the wiring holes and are connected to the protection circuit.

[0013] Compared with the prior art, the beneficial effects of the utility model are: it can effectively prevent water vapor from entering the circuit board, and can cut off the power in time after accidental water ingress, thereby protecting the circuit board and avoiding electrical damage. The specific contents are as follows:

[0014] The waterproof cover of the electric pressure cooker is buckled on the connecting base, blocking most of the water from entering the internal circuit waterproof box body, and the circuit waterproof box body is used to transfer water that accidentally enters the waterproof cover of the electric pressure cooker and the connecting base into the circuit board, thereby protecting the circuit board from being damaged by water. When water vapor accidentally enters the circuit waterproof box body through the waterproof cover of the electric pressure cooker and the connecting base, the water vapor first contacts the copper wire frame, and after contact, the power can be cut off in time through the electronic switch, thereby protecting the circuit board chip from damage, and the multiple groups of circuit elements on the circuit board are waterproofly protected by the waterproof coating to avoid damage to the circuit elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body splicing structure of a waterproof printed circuit board structure of an electric pressure cooker according to the utility model;

[0016] Figure 2 It is a schematic structural diagram of a side section of a circuit waterproof box body of a waterproof printed circuit board structure of an electric pressure cooker according to the utility model;

[0017] Figure 3It is a schematic diagram of the structure of a circuit waterproof box body of a waterproof printed circuit board structure of an electric pressure cooker according to the utility model from a top view;

[0018] Figure 4 The utility model is a schematic structural diagram of a waterproof structure of a circuit board of a waterproof printed circuit board structure of an electric pressure cooker.

[0019] In the figure: 1. Waterproof cover of electric pressure cooker; 11. Connection positioning hole; 2. Pressure cooker operation panel; 3. Connection chassis; 31. Fixed connection column; 32. Waterproof plug-in block; 321. Connection wire; 322. Wiring hole; 4. Circuit waterproof box body; 41. Sealed top cover; 411. Connection plug-in block; 412. Sealing strip; 42. Connection box body; 421. Copper wire frame; 43. Connection slot; 5. Circuit board; 51. Circuit element; 511. Waterproof coating; 6. Protection circuit; 61. Electronic switch; 62. Connecting wire. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a waterproof printed circuit board structure of an electric pressure cooker, comprising a waterproof cover 1 for an electric pressure cooker, a waterproof circuit box body 4 and a circuit board 5, a pressure cooker operation panel 2 is arranged on the top of the waterproof cover 1 for an electric pressure cooker, and a connecting chassis 3 is arranged below the waterproof cover 1 for an electric pressure cooker, a plurality of connection positioning holes 11 are arranged on the waterproof cover 1 for an electric pressure cooker, a plurality of fixed connection columns 31 are arranged on the inner side of the connecting chassis 3, and the plurality of connection positioning holes 11 correspond to the plurality of fixed connection columns 31 one by one, and the plurality of connection positioning holes 11 are bolted to the plurality of fixed connection columns 31, the waterproof circuit box body 4 is arranged between the waterproof cover 1 for an electric pressure cooker and the connecting chassis 3, the waterproof circuit box body 4 comprises a sealing top cover 41 and a connecting box body 42, and the circuit board 5 is connected between the sealing top cover 41 and the connecting box body 42.

[0022] The connecting base 3 is connected to the electric pressure cooker, and the electric pressure cooker waterproof cover 1 is buckled on the connecting base 3, and is bolted through multiple groups of connection positioning holes 11 and multiple groups of fixed connection columns 31 to make it closed, thereby preventing most of the water from entering the internal circuit waterproof box body 4. The circuit waterproof box body 4 is used to transfer the water that accidentally enters the electric pressure cooker waterproof cover 1 and the connecting base 3 into the circuit board 5, thereby protecting the circuit board 5 from being damaged by water, and various usage instructions are issued to the circuit board 5 through the pressure cooker operation panel 2 on the top of the electric pressure cooker waterproof cover 1.

[0023] A waterproof plug-in block 32 is provided at the center of one side of the connection chassis 3, a connection wire 321 is connected in the waterproof plug-in block 32, and a wiring hole 322 is provided on the side of the waterproof plug-in block 32 away from the connection wire 321, a connection plug-in block 411 is connected below the sealing top cover 41, and the sealing top cover 41 is plugged into the connection box body 42 through the connection plug-in block 411, and a sealing strip 412 is provided at the connection between the connection plug-in block 411 and the connection box body 42, a connection slot 43 is provided on one side of the circuit waterproof box body 4, and the waterproof plug-in block 32 and the connection slot 43 are interlocked, and the outer side of the circuit board 5 is provided with Two groups of copper wire frames 421 are bonded and connected by hot-melt adhesive. The sealed top cover 41 is plugged into the connection box body 42 through the connection plug-in block 411, and the interface is sealed by the sealing strip 412 to prevent water vapor from entering. The circuit waterproof box body 4 is snapped onto the waterproof plug-in block 32 on the connection base frame 3 through the connection slot 43, and the waterproof plug-in block 32 is used to protect the safety of the connection point between the connecting wire 321 and the circuit waterproof box body 4. The circuit board 5 is placed in the circle surrounded by the two groups of copper wire frames 421, and after water vapor accidentally enters the circuit waterproof box body 4, it first contacts the copper wire frame 421.

[0024] A plurality of groups of circuit elements 51 are arranged on the circuit board 5, and a waterproof coating 511 is applied on the circuit elements 51. A protection circuit 6 is arranged on one side of the circuit board 5, and an electronic switch 61 is arranged on the protection circuit 6. A connecting wire 62 is connected between the protection circuit 6 and the two groups of copper wire frames 421, and between the electronic switch 61 and the circuit board 5. The connecting wire 321 passes through the wiring hole 322 to connect with the protection circuit 6. The protection circuit 6 is a field effect tube. One end of the connecting wire 321 is connected to the power supply and passes through the wiring hole 322 to connect with the protection circuit 6. A group of connecting wires 321 is connected to the electronic switch 61, and the protection circuit 6 is connected to the two groups of copper wire frames 421 and the circuit board 5 through the connecting wire 62 to form a parallel connection. When water contacts the copper wire frame 421, the power can be cut off in time through the electronic switch 61. The plurality of groups of circuit elements 51 on the circuit board 5 are waterproofly protected by the waterproof coating 511 to prevent the circuit elements 51 from being damaged.

[0025] Working principle: When using a waterproof printed circuit board structure of an electric pressure cooker, first connect the protection circuit 6 with the two groups of copper wire frames 421 and the electronic switch 61 and the circuit board 5 through the connecting wire 62, connect one end of the connecting wire 321 to the power supply, and pass through the wiring hole 322 to connect with the protection circuit 6, then place the circuit board 5 in the circle surrounded by the two groups of copper wire frames 421, and then plug the sealing top cover 41 into the connection box body 42 through the connecting plug block 411, and the interface is sealed by the sealing strip 412, the circuit waterproof box body 4 is snapped on the waterproof plug block 32 on the connecting base frame 3 through the connecting slot 43, and then the electric pressure cooker waterproof machine cover 1 is snapped on the connecting base frame 3, and is bolted through multiple groups of connecting positioning holes 11 and multiple groups of fixed connecting columns 31 to make it closed, preventing most of the water from entering the internal circuit waterproof box body 4.

[0026] When in use, various instructions for use are issued to the circuit board 5 through the pressure cooker operation panel 2 on the top of the electric pressure cooker waterproof cover 1. When water vapor accidentally enters the circuit waterproof box body 4 through the electric pressure cooker waterproof cover 1 and the connecting base 3, the water vapor first contacts the copper wire frame 421, and after contact, the power can be cut off in time through the electronic switch 61, thereby protecting the circuit board 5 chip from damage, and the multiple groups of circuit elements 51 on the circuit board 5 are waterproof protected by the waterproof coating 511 to prevent the circuit elements 51 from being damaged.

Claims

1. A waterproof printed circuit board structure for an electric pressure cooker, comprising a waterproof cover (1) for the electric pressure cooker, a waterproof circuit box (4) and a circuit board (5), characterized in that: The top of the electric pressure cooker waterproof cover (1) is provided with a pressure cooker operation panel (2), and a connection base frame (3) is provided below the electric pressure cooker waterproof cover (1). The electric pressure cooker waterproof cover (1) is provided with a plurality of connection positioning holes (11), and a plurality of fixed connection columns (31) are provided on the inner side of the connection base frame (3). The plurality of connection positioning holes (11) and the plurality of fixed connection columns (31) correspond to each other one by one, and the plurality of connection positioning holes (11) and the plurality of fixed connection columns (31) are bolted together. The circuit waterproof box body (4) is provided between the electric pressure cooker waterproof cover (1) and the connection base frame (3). The circuit waterproof box body (4) comprises a sealing top cover (41) and a connection box body (42), and the circuit board (5) is connected between the sealing top cover (41) and the connection box body (42).

2. The waterproof printed circuit board structure of an electric pressure cooker according to claim 1, characterized in that: A waterproof plug-in block (32) is provided at the center of one side of the connection base frame (3), a connection wire (321) is connected inside the waterproof plug-in block (32), and a wiring hole (322) is provided on a side of the waterproof plug-in block (32) away from the connection wire (321).

3. The waterproof printed circuit board structure of an electric pressure cooker according to claim 2, characterized in that: A connection plug-in block (411) is connected below the sealing top cover (41), and the sealing top cover (41) is plugged into the connection box (42) through the connection plug-in block (411), and a sealing strip (412) is provided at the connection between the connection plug-in block (411) and the connection box (42).

4. The waterproof printed circuit board structure of an electric pressure cooker according to claim 3, characterized in that: A connection slot (43) is provided on one side of the circuit waterproof box body (4), and the waterproof plug-in block (32) and the connection slot (43) are interlocked with each other. Two groups of copper wire square frames (421) are provided on the outer side of the circuit board (5), and the two groups of copper wire square frames (421) are bonded and connected by hot-melt adhesive.

5. The waterproof printed circuit board structure of an electric pressure cooker according to claim 2, characterized in that: The circuit board (5) is provided with a plurality of groups of circuit elements (51), and a waterproof coating (511) is applied to the circuit elements (51). A protection circuit (6) is provided on one side of the circuit board (5), and an electronic switch (61) is provided on the protection circuit (6).

6. The waterproof printed circuit board structure of an electric pressure cooker according to claim 5, characterized in that: The protection circuit (6) and the two groups of copper wire frames (421) as well as the electronic switch (61) and the circuit board (5) are all connected with connecting wires (62), and the connecting wires (321) pass through the wiring holes (322) to be connected to the protection circuit (6).

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