Electric appliance switch

Abstract

The utility model relates to an electric appliance switch used for on-off control of a household appliance, the household appliance comprises a cover body and a body, the electric appliance switch comprises a working circuit, a load circuit, a first coil, a second coil and an electromagnetic switch, the working circuit is connected with a power supply, the first coil is connected with the working circuit, the second coil is connected with the load circuit, and the electromagnetic switch is connected with the cover body. The electromagnetic switch is connected in series with a load circuit, the first coil is fixed on the cover body, and the second coil is fixed on the body. Compared with the prior art, the switch has the advantages of simple switch control structure, convenience in operation, low cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic communications, in particular to an electrical appliance switch. Background Art

[0002] At present, the switch of household appliances is mainly through wifi. WiFi control can be divided into LAN control and WAN control according to the control distance. 1. LAN control method 1: The Wi-Fi module works in AP mode, and the smart terminal (mobile phone, tablet) directly accesses the network provided by the Wi-Fi module to achieve wireless control in the same hotspot network. However, since the Wi-Fi module works in AP mode, that is, hotspot mode, it has limited access to smart device terminals, and most of them can provide several other smart control terminals (such as mobile phones and tablets). Method 2: The Wi-Fi module works in STA mode. The smart terminal and Wi-Fi module work in a wireless network environment provided by a wireless router. The data signal is forwarded by the wireless router to achieve LAN wireless control. Method 3: Using the STA mode of Wi-Fi as a central controller, the wireless communication between the Wi-Fi central controller and other device terminals can adopt 433 technology, 315 technology, and 2.4G technology to form a local area network centered on the Wi-Fi central controller.

[0003] However, the operation of wifi controlled switch is relatively complicated. Many elderly people are not familiar with smart devices, so it is not very suitable for the elderly. In addition, the structure is more complicated, the cost is high, and the later maintenance is inconvenient. The utility model controls the switch by coil coupling, providing an electrical switch with simpler operation. Utility Model Content

[0004] The purpose of the utility model is to provide an electrical switch with simple operation and efficient control in order to overcome the defects of the prior art that the way of operating the electrical switch through the wifi control switch is relatively complicated for the elderly, more expensive, and has high subsequent maintenance costs.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An electrical switch is used for switching control of a household appliance. The household appliance includes a cover and a body. The electrical switch includes a working circuit, a load circuit, a first coil, a second coil and an electromagnetic switch. The working circuit is connected to a power supply, the first coil is connected to the working circuit, the second coil is connected to the load circuit, the electromagnetic switch is connected in series with the load circuit, the first coil is fixed on the cover, and the second coil is fixed on the body.

[0007] Preferably, when the cover and the body are closed, the distance between the first coil and the second coil is less than or equal to 40 mm.

[0008] Preferably, when the cover and the main body are closed, the projection of the second coil on the cover covers the first coil.

[0009] Preferably, the thickness of the first coil and the second coil are both less than 0.5 mm.

[0010] Preferably, the length of the first coil is in the range of 35-45 mm, the width of the first coil is in the range of 35-45 mm, the length of the second coil is in the range of 35-45 mm, and the width of the second coil is in the range of 35-45 mm.

[0011] Preferably, the second coil is connected in series in the load circuit.

[0012] Preferably, the second coil is connected to the working circuit by welding.

[0013] Preferably, the first coil is fixed inside the cover, and the second coil is fixed inside the body.

[0014] Preferably, a rectifier module is provided between the second coil and the load circuit.

[0015] Preferably, the electrical switch further comprises a display module for displaying the on / off state of the working circuit, and the display module is connected to the second coil.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] (1) In this scheme, after the small household appliance is connected to the power supply, when the cover is opened, the first coil and the second coil are far apart, and the second coil cannot generate an induced electromotive force, and the electromagnetic switch keeps the load circuit in an open state; after the cover and the main body are closed, the distance between the first coil and the second coil meets the requirement, and the second coil generates an induced electromotive force to form a power supply for the load circuit, thereby driving the electromagnetic switch to close the load circuit, supplying power to the load circuit, and the household appliance starts to work.

[0018] By opening and closing the cover and the main body of the small household appliance, the distance between the first coil on the cover and the second coil on the main body is adjusted to control the generation of the induced electromotive force of the second coil, and then the opening and closing of the electromagnetic switch in the load circuit is adjusted to achieve the control of the on and off of the load circuit. The structure of the electrical switch is simple and the cost is low; and the switch of the working circuit can be adjusted by moving the cover body that must be moved, and the control method is simple.

[0019] (2) When the thickness of the coil is too large, it will occupy a large installation space, which is inconvenient for the installation of small household appliances. In this solution, the thickness of the coil is less than 0.5 mm, which is relatively thin, and the length and width of the coil are also small. The overall volume of the coil is small, and the design and layout are flexible, which saves space inside the small household appliance and facilitates the size design of the small household appliance.

[0020] (3) The wifi control operation has many functions, which makes the corresponding structure relatively complex, inconvenient to install, and increases the cost of small household appliances. In this solution, the working circuit is controlled by means of coil coupling, in conjunction with the cover and body that must be separated and closed, which simplifies the control module, facilitates the installation and disassembly of small household appliances, and reduces the cost of small household appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a small household appliance using the electrical switch of the present invention;

[0022] Figure 2 A schematic diagram of the principle of the electrical switch provided by the utility model;

[0023] In the figure: 1, cover, 2, body, 3, first coil, 4, second coil, 5, display module. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0028] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment provides an electrical switch for switching control of a household appliance, wherein the household appliance includes a cover body 1 and a body 2, and is characterized in that the electrical switch includes a working circuit, a load circuit, a first coil 3, a second coil 4 and an electromagnetic switch, wherein the working circuit is connected to a power supply, the first coil 3 is connected to the load circuit, the second coil 4 is connected to the electromagnetic switch, the electromagnetic switch is connected in series with the load circuit, the first coil 3 is fixed on the cover body 1, and the second coil 4 is fixed on the body 2.

[0032] Working principle: After the small household appliance is connected to the power supply, when the cover 1 is opened, the first coil 3 and the second coil 4 are far apart, and the second coil 4 cannot generate an induced electromotive force, and the electromagnetic switch keeps the load circuit in an open state; after the cover 1 and the main body 2 are closed, the distance between the first coil 3 and the second coil 4 meets the requirements, and the second coil 4 generates an induced electromotive force to form a power supply for the load circuit, thereby driving the electromagnetic switch to close the load circuit, powering the load circuit, and the household appliance works.

[0033] In this solution, after the small household appliance is connected to electricity, when the cover 1 is opened, the first coil 3 and the second coil 4 are far apart, and the second coil 4 cannot generate an induced electromotive force, and the electromagnetic switch keeps the load circuit in an open state; after the cover 1 and the main body 2 are closed, the distance between the first coil 3 and the second coil 4 meets the requirement, and the second coil 4 generates an induced electromotive force to form a power supply for the load circuit, thereby driving the electromagnetic switch to close the load circuit, powering the load circuit, and the small household appliance works.

[0034] By opening and closing the cover 1 and the body 2 of the small household appliance, the distance between the first coil 3 on the cover 1 and the second coil 4 on the body 2 is adjusted to control the generation of the induced electromotive force of the second coil 4, thereby adjusting the opening and closing of the electromagnetic switch in the load circuit to achieve the control of the on-off of the load circuit. The structure of the electrical switch is simple and the cost is low; and the switch of the working circuit can be adjusted by moving the cover 1 which must be moved, and the control method is simple.

[0035] As a preferred embodiment, when the cover 1 and the body 2 are closed, the distance between the first coil 3 and the second coil 4 is less than or equal to 40 mm. When the cover 1 and the body 2 are closed, the projection of the second coil 4 on the cover 1 covers the first coil 3.

[0036] By limiting the spacing and overlapping area when the first coil 3 and the second coil 4 are coupled, the coupling coefficient and coupling effect of the two coils are ensured, and the generated induced electromotive force is ensured to enable the switch to operate. On the other hand, there is no interference from other devices between the coils, and no metal contacts the coils, otherwise the switch function may fail.

[0037] As a preferred embodiment, the thickness of the first coil 3 and the second coil 4 are both less than 0.5 mm. The length of the first coil 3 is in the range of 35-45 mm, and the width of the first coil 3 is in the range of 35-45 mm. The length of the second coil 4 is in the range of 35-45 mm, and the width of the second coil 4 is in the range of 35-45 mm. The coil size cannot be too small, otherwise the magnetic field strength will be too weak and will not be sensed.

[0038] When the thickness of the coil is too large, it will occupy a large installation space, which is inconvenient for the installation of small household appliances. In this solution, the thickness of the coil is less than 0.5 mm, which is relatively thin, and the length and width of the coil are also small. The overall volume of the coil is small, and the design and layout are flexible, which saves space inside the small household appliances and facilitates the size design of the small household appliances.

[0039] Optionally, the second coil 4 is connected in series in the load circuit, and the second coil 4 is connected to the working circuit by welding. The first coil 3 is fixed inside the cover 1. The second coil 4 is fixed inside the body 2. The coil is fixed more firmly, ensuring that the structure of the small household appliance is more stable and reliable. A rectifier module is provided between the second coil 4 and the load circuit.

[0040] As a preferred embodiment, the electrical switch further comprises a display module 5 for displaying the on / off state of the working circuit, and the display module 5 is connected to the second coil 4. The working state of the small household appliance can be observed more directly through the display module 5, which is convenient for use.

[0041] Wi-Fi control has many functions, which makes the corresponding structure relatively complex, inconvenient to install, and increases the cost of small household appliances. In this solution, the working circuit is controlled by means of coil coupling, in conjunction with the cover and body that must be separated and closed, which simplifies the control module, facilitates the installation and disassembly of small household appliances, reduces the cost of small household appliances, and improves the yield rate and production capacity.

[0042] In this embodiment, the small household appliance may be an electric rice cooker, a kettle or a tea maker, etc., which can be used by coupling the cover and the body of the structure with the coil.

[0043] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An electrical switch for controlling the on / off of a household appliance, wherein the household appliance comprises a cover (1) and a body (2), wherein: The electrical switch comprises a working circuit, a load circuit, a first coil (3), a second coil (4) and an electromagnetic switch, wherein the working circuit is connected to a power supply, the first coil (3) is connected to the working circuit, the second coil (4) is connected to the load circuit, the electromagnetic switch is connected in series with the load circuit, the first coil (3) is fixed on the cover (1), and the second coil (4) is fixed on the body (2).

2. An electrical switch according to claim 1, characterized in that: When the cover (1) and the main body (2) are closed, the distance between the first coil (3) and the second coil (4) is less than or equal to 40 mm.

3. An electrical switch according to claim 1, characterized in that: When the cover (1) and the main body (2) are closed, the projection of the second coil (4) on the cover (1) covers the first coil (3).

4. An electrical switch according to claim 1, characterized in that: The thickness of the first coil (3) and the second coil (4) are both less than 0.5 mm.

5. An electrical switch according to claim 1, characterized in that: The length of the first coil (3) is in the range of 35-45 mm, the width of the first coil (3) is in the range of 35-45 mm, the length of the second coil (4) is in the range of 35-45 mm, and the width of the second coil (4) is in the range of 35-45 mm.

6. An electrical switch according to claim 1, characterized in that: The second coil (4) is connected in series in the load circuit.

7. An electrical switch according to claim 1, characterized in that: The second coil (4) is connected to the working circuit by welding.

8. An electrical switch according to claim 1, characterized in that: The first coil (3) is fixed inside the cover (1), and the second coil (4) is fixed inside the body (2).

9. An electrical switch according to claim 1, characterized in that: A rectifier module is provided between the second coil (4) and the load circuit.

10. An electrical switch according to claim 1, characterized in that: The electrical switch also includes a display module (5) for displaying the on / off state of the working circuit, and the display module (5) is connected to the second coil (4).

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