CN219917592U - Household appliance - Google Patents

Abstract

The utility model discloses a household appliance, and belongs to the technical field of electronics. The home appliance includes: the electric appliance control panel and the electric appliance main body can comprise a protective cover plate, a touch panel, a switching circuit board and an antenna assembly. The touch panel is provided with a touch area, the antenna assembly comprises an antenna control board and a first antenna which are connected, and the orthographic projection of the first antenna on the protective cover plate is positioned outside the orthographic projection of the touch area on the protective cover plate. The first antenna of the antenna assembly can be prevented from being blocked by the touch area of the touch panel, interference caused by the touch panel to the receiving and transmitting of wireless signals of the antenna assembly can be avoided, and the stability of the wireless signals of the household appliance can be improved.

Description

Household appliance

Technical Field

The utility model relates to the technical field of electronics, in particular to a household appliance.

Background

At present, with the maturity of household electrical appliances intelligent technology, the antenna assembly is provided in more and more household electrical appliances to realize the function of receiving or sending wireless signal through the antenna assembly.

In the related art, a household appliance is provided with a control panel and an antenna assembly, wherein the control panel is electrically connected with the antenna assembly, and the antenna assembly is positioned on the back surface of the control panel. The antenna assembly is capable of transmitting or receiving electromagnetic wave signals to enable remote communication between the control panel and a terminal held by a user.

The antenna assembly in the household appliance is more susceptible to interference of other elements, so that the wireless signal stability of the household appliance is poor.

Disclosure of Invention

The embodiment of the utility model provides a household appliance. The technical scheme is as follows:

the household appliance comprises an appliance control board and an appliance main body, wherein the appliance control board is positioned on the appliance main body and is electrically connected with the appliance main body;

the electric appliance control panel comprises a protective cover plate, a touch panel positioned on the protective cover plate, a switching circuit board and an antenna assembly;

the touch panel is provided with a touch area, and the touch area is used for receiving a touch operation instruction;

the antenna assembly is located on one face, away from the touch panel, of the switching circuit board, the antenna assembly comprises an antenna control board and a first antenna which are connected, and orthographic projection of the first antenna on the protective cover plate is located outside orthographic projection of the touch area on the protective cover plate.

Optionally, the touch panel further includes a connection area located outside at least part of the edge of the touch area, and the connection area is connected with the electrical appliance main body;

and the front projection of the first antenna on the protective cover plate and the front projection of the connecting area on the protective cover plate have overlapping areas.

Optionally, the orthographic projection of at least part of the first antenna on the protective cover plate is located outside the orthographic projection of the switching circuit board on the protective cover plate.

Optionally, the antenna control board includes a connection substrate and a chip portion, where the chip portion and the first antenna are both located on the connection substrate, and the chip portion and the first antenna are both electrically connected with the connection substrate;

at least part of the connecting substrate is positioned on the switching circuit board and is electrically connected with the switching circuit board, and the orthographic projection of the chip part on the protection cover plate and the orthographic projection of the switching circuit board on the protection cover plate have overlapping areas.

Optionally, the antenna assembly further comprises a second antenna;

the second antenna is electrically connected with the chip part, at least part of the orthographic projection of the second antenna on the protection cover plate is positioned outside the orthographic projection of the switching circuit board on the protection cover plate, and the orthographic projection of the second antenna on the protection cover plate is positioned outside the orthographic projection of the touch panel on the protection cover plate.

Optionally, the electrical appliance control board further comprises a display panel, and the display panel is located between the touch panel and the switching circuit board;

the orthographic projection of the connecting area of the touch panel on the protective cover plate is positioned outside the orthographic projection of the display panel on the protective cover plate;

the front projections of the first antenna and the second antenna on the protective cover plate are located outside the front projection of the display panel on the protective cover plate.

Optionally, the electrical appliance control board further comprises a flexible circuit board, wherein the flexible circuit board is located between the display panel and the switching circuit board, and the flexible circuit board is respectively connected with the display panel and the switching circuit board;

the shortest distance between the flexible circuit board and the first antenna and the shortest distance between the flexible circuit board and the second antenna in the first direction are all larger than or equal to 20 mm, and the first direction is a direction parallel to the board surface of the switching circuit board.

Optionally, at least one of the first antenna and the second antenna includes a high frequency radiation branch, a low frequency radiation branch, a ground branch, and a feed branch;

the high-frequency radiation branch and the low-frequency radiation branch are electrically connected with one end of the feed branch, and the other end of the feed branch is electrically connected with the chip part;

the feed branch is also electrically connected with one end of the grounding branch, and the other end of the grounding branch is grounded.

Optionally, at least one of the first antenna and the second antenna further comprises a coupling branch, the coupling branch is located on one side of the feed branch away from the ground branch, at least part of the coupling branch is parallel to the feed branch, and one end of the coupling branch is grounded.

Optionally, the switching circuit board is quadrilateral, and the switching circuit board has a first edge and a second edge which are opposite;

the front projection of the first antenna on the protective cover plate and the front projection of the first edge on the protective cover plate have overlapping areas, and the front projection of the second antenna on the protective cover plate and the front projection of the second edge on the protective cover plate have overlapping areas.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

a home appliance including an appliance control board and an appliance main body is provided, and the appliance control board may include a protective cover plate, a touch panel, a switching circuit board, and an antenna assembly. The touch panel is provided with a touch area, the antenna assembly comprises an antenna control board and a first antenna which are connected, and the orthographic projection of the first antenna on the protective cover plate is positioned outside the orthographic projection of the touch area on the protective cover plate. The first antenna of the antenna assembly can be prevented from being blocked by the touch control area of the touch control panel, interference caused by the touch control panel to the receiving and transmitting of the wireless signals of the antenna assembly can be avoided, the problem that the stability of the wireless signals of the household appliance is poor in the related art can be solved, and the effect of improving the stability of the wireless signals of the household appliance is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electrical control board according to an embodiment of the present utility model;

FIG. 2 is an exploded schematic view of the electrical control board shown in FIG. 1;

fig. 3 is a schematic structural diagram of a touch panel and an antenna assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a touch panel according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of another electrical control board according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of an antenna assembly and a switching circuit board according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of another electrical control board according to an embodiment of the present utility model;

fig. 8 is a schematic structural diagram of another touch panel and an antenna assembly according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of an electrical control board according to an embodiment of the present utility model;

FIG. 10 is a schematic view of an exploded construction of the electrical control board shown in FIG. 9;

fig. 11 is a schematic structural view of another electrical control board according to an embodiment of the present utility model;

fig. 12 is a schematic view of a connection structure of a flexible connection board according to an embodiment of the present utility model;

fig. 13 is a schematic diagram of a connection structure of a switching circuit board according to an embodiment of the present utility model;

fig. 14 is a schematic structural diagram of an antenna assembly according to an embodiment of the present utility model;

fig. 15 is a schematic structural diagram of another antenna assembly according to an embodiment of the present utility model;

fig. 16 is an S11 simulation graph of the antenna assembly shown in fig. 1;

fig. 17 is a VSWR simulation graph of the antenna assembly shown in fig. 1.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

With the progress of technology and the development of the electronic and communication fields, home appliances with wireless communication function gradually enter thousands of households. An antenna assembly is an indispensable structure in a home appliance, and an antenna assembly is a type of transducer that can be used to transmit or receive electromagnetic wave signals. The antenna component of the household appliance can support various communication frequency bands so as to meet the communication function of the household appliance.

The household appliance refers to a built-in antenna assembly, and the antenna assembly can realize network connection through a router. The user can control the state of the household appliance at any time through the held terminal so as to flexibly control the household appliance, and the experience of using the household appliance by the user can be improved.

A household appliance is provided with a control panel and an antenna assembly, wherein the control panel is electrically connected with the antenna assembly, and the antenna assembly is positioned on the back surface of the control panel. The antenna assembly is capable of transmitting or receiving electromagnetic wave signals to enable remote communication between the control panel and a terminal held by a user. The antenna assembly in the home appliance is more susceptible to interference of other elements, resulting in poor wireless signal stability of the home appliance. When a user uses the household appliance, poor connection may occur, and the use feeling of the user is affected.

The present utility model provides a home appliance capable of solving the problems of the related art described above.

Fig. 1 is a schematic structural diagram of an electrical control board 10 according to an embodiment of the present utility model, fig. 2 is an exploded schematic structural diagram of the electrical control board 10 shown in fig. 1, and fig. 3 is a schematic structural diagram of a touch panel 12 and an antenna assembly 14 according to an embodiment of the present utility model, please refer to fig. 1, fig. 2 and fig. 3. The home appliance may include an appliance control board 10 and an appliance body, and the appliance control board 10 may be located on the appliance body and electrically connected with the appliance body. The electric appliance control board 10 may be used to receive the control signal and control the on-off state and the operation state of the electric appliance main body according to the control signal.

The electric control board 10 may include a protective cover 11, a touch panel 12 on the protective cover 11, a switching circuit board 13, and an antenna assembly 14. In the home appliance, the appliance body may have a receiving groove, and the touch panel 12, the switching circuit board 13, and the antenna assembly 14 in the appliance control board 10 may be located in the receiving groove, and the protective cover 11 may be located at a position where an opening of the receiving groove is located.

The touch panel 12 may have a touch area c1, the touch area c1 may be used to receive a touch operation instruction, and the touch panel 12 may be used to implement a touch function of the electrical control board 10. The touch area c1 of the touch panel 12 may have touch electrodes made of conductive material, which can interfere with the signals of the antenna assembly 14.

The antenna assembly 14 may be located on a side of the switch circuit board 13 facing away from the touch panel 12, the antenna assembly 14 may include an antenna control board 141 and a first antenna 142 connected to each other, the antenna control board 141 may be mounted on the switch circuit board 13, and an orthographic projection of the first antenna 142 on the protective cover 11 is located outside an orthographic projection of the touch area c1 on the protective cover 11.

In this way, the touch area c1 of the touch panel 12 can be prevented from shielding the first antenna 142 of the antenna assembly 14, and the interference of the touch panel 12 to the antenna assembly 14 can be reduced. That is, the first antenna 142 and the touch area c1 of the touch panel 12 are staggered, so that the magnetic interference of the touch area c1 of the touch panel 12 to the first antenna 142 can be reduced.

In summary, the embodiment of the utility model provides a household appliance including an appliance control board and an appliance main body, wherein the appliance control board may include a protective cover plate, a touch panel, a switching circuit board and an antenna assembly. The touch panel is provided with a touch area, the antenna assembly comprises an antenna control board and a first antenna which are connected, and the orthographic projection of the first antenna on the protective cover plate is positioned outside the orthographic projection of the touch area on the protective cover plate. The first antenna of the antenna assembly can be prevented from being blocked by the touch control area of the touch control panel, the interference of the touch control panel to the wireless signal of the antenna assembly can be avoided, the problem that the stability of the wireless signal of the household appliance is poor in the related art can be solved, and the effect of improving the stability of the wireless signal of the household appliance is achieved.

Fig. 4 is a schematic structural diagram of a touch panel 12 according to an embodiment of the present utility model, referring to fig. 3 and 4, in an alternative embodiment, the touch panel 12 may further include a connection area c2 located outside at least a portion of an edge of the touch area c1, where the connection area c2 may be connected to the main body of the electrical apparatus. The connection area c2 may be used to fix the touch panel 12, and the front projection of the first antenna 142 on the protective cover 11 has an overlapping area with the front projection of the connection area c2 on the protective cover 11.

The connection region c2 may be located at an edge of the touch panel 12, the material of the connection region c2 may include at least one of polyethylene, polypropylene, or polyvinyl chloride, and no conductive material (such as at least one of a metal material and a semiconductor material) is disposed in the connection region c2 of the touch panel 12, and no circuit is disposed in the connection region c 2. When the first antenna 142 of the antenna assembly 14 is located at the side of the connection area c2 of the touch panel 12 away from the protection panel, the connection area c2 of the touch panel 12 does not interfere with the first antenna 142 of the antenna assembly 14, and the first antenna 142 of the antenna assembly 14 and the connection area c2 of the touch panel 12 are stacked, so that a separate placement area for the first antenna 142 in the electrical control board 10 can be avoided, and the space utilization of the electrical control board 10 in which the first antenna 142 is disposed can be improved.

Fig. 5 is a schematic structural diagram of another electrical control board 10 according to an embodiment of the present utility model, please refer to fig. 5, in which the electrical control board 10 shown in fig. 5 may be the back surface of the electrical control board 10 shown in fig. 3, that is, in fig. 3, the protective cover 11 is located at the bottom layer, in fig. 5, the protective cover 11 is located at the top layer, and in order to more clearly show the structure located at the lower layer of the protective cover 11 in fig. 5, the protective cover 11 in fig. 5 is shown by using a dashed line frame. The touch panel 12 further includes a control circuit area c3 located outside at least a portion of the edge of the touch area c1, and the touch panel 12 further includes a control circuit located in the control circuit area c3 and electrically connectable to the touch electrodes in the control area of the control panel. In addition, the control circuit area c3 may be located at two sides of the touch area c1, and in the embodiment of the present utility model, the material of the control circuit may include silver. Since the control circuit in the control circuit area c3 also causes interference to the first antenna 142 of the antenna assembly 14, the front projection of the first antenna 142 on the protection cover 11 is also located outside the front projection of the control circuit area c3 on the protection cover 11, so as to avoid the influence of the control circuit in the control circuit area c3 on the signal receiving or transmitting of the first antenna 142.

Fig. 6 is a schematic structural diagram of an antenna assembly 14 and a patch circuit board 13 according to an embodiment of the present utility model, and referring to fig. 6, in an alternative embodiment, an orthographic projection of at least a portion of a first antenna 142 on a protective cover 11 is located outside an orthographic projection of the patch circuit board 13 on the protective cover 11. Thus, by extending the first antenna 142 out of the patch circuit board 13, the patch circuit board 13 can be prevented from interfering with the first antenna 142.

Referring to fig. 6, alternatively, the antenna control board 141 may include a connection substrate 1411 and a chip portion 1412, the chip portion 1412 and the first antenna 142 being located on the connection substrate 1411, the chip portion 1412 and the first antenna 142 being electrically connected to the connection substrate 1411. At least a portion of the connection substrate 1411 may be located on the interposer circuit board 13 and electrically connected to the interposer circuit board 13, and an orthographic projection of the chip portion 1412 on the protective cover 11 and an orthographic projection of the interposer circuit board 13 on the protective cover 11 have overlapping areas.

The connection substrate 1411 may be soldered to the transfer circuit board 13 and electrically connected to the transfer circuit board 13 to supply power to the chip part 1412 on the connection substrate 1411 through a power supply of the transfer circuit board 13, and the transfer circuit board 13 may have a connection interface and a micro control unit (english: microcontroller Unit; abbreviated: MCU) thereon, and the chip part 1412 may communicate with the interface and the micro control unit on the transfer circuit board 13 through the connection substrate 1411. The front projection of the chip portion 1412 on the protective cover 11 and the front projection of the interposer circuit board 13 on the protective cover 11 have overlapping areas, so that the chip portion 1412 and the interposer circuit board 13 can be connected conveniently, and the length of the line on the connection substrate 1411 for connecting the chip portion 1412 and the interposer circuit board 13 is short.

In addition, in the embodiment of the present utility model, the first antenna 142 and the chip 1412 are provided on the same connection substrate 1411, so that a disconnection failure in the connection between the first antenna 142 and the chip 1412 can be avoided.

Fig. 7 is a schematic structural diagram of another electrical control board 10 according to an embodiment of the present utility model, and fig. 8 is a schematic structural diagram of another touch panel 12 and an antenna assembly 14 according to an embodiment of the present utility model, referring to fig. 7 and 8, optionally, the antenna assembly 14 may further include a second antenna 143, the second antenna 143 may be electrically connected to the chip portion 1412, a front projection of at least a portion of the second antenna 143 on the protective cover 11 may be located outside a front projection of the switching circuit board 13 on the protective cover 11, and a front projection of the second antenna 143 on the protective cover 11 may be located outside a front projection of the touch panel 12 on the protective cover 11. The size of the switching circuit board 13 in the first direction f1 may be larger than the touch panel 12, that is, the front projection of at least part of the switching circuit board 13 on the protective cover 11 may be located outside the front projection of the touch panel 12 on the protective cover 11. When the second antenna 143 is connected to at least a portion of the interposer circuit board 13, the second antenna 143 may be offset from the touch panel 12. In this way, the interference of the switching circuit board 13 and the touch panel 12 to the second antenna 143 can be avoided.

The second antenna 143 is added on the basis of the first antenna 142, so that the electric appliance control board 10 is compatible with a plurality of frequency bands, and the performance of the electric appliance control board 10 can be improved.

In the embodiment of the present utility model, the protection cover 11 may be made of glass, acryl plastic, etc., and may shield other devices in the electrical control board 10. The protective cover 11 may have a light-transmitting area and a non-light-transmitting area, and the orthographic projection of the touch area c1 of the touch panel 12 on the protective cover 11 may be located in the light-transmitting area, so that the touch panel 12 may work normally. The front projection of the connection area c2 of the touch panel 12 on the protective cover 11 and the front projection of the second antenna 143 on the protective cover 11 can be located in the non-light-transmitting area, so that the connection area c2, the first antenna 142 and the second antenna 143 are shielded by the protective cover 11, thereby improving the aesthetic property of the electrical control board 10.

Fig. 9 is a schematic structural diagram of an electrical control board 10 according to an embodiment of the present utility model, fig. 10 is a schematic explosion structural diagram of the electrical control board 10 shown in fig. 9, and referring to fig. 9 and 10, optionally, the electrical control board 10 further includes a display panel 17, the display panel 17 is located between the touch panel 12 and the switching circuit board 13, the front projection of the connection area c2 of the touch panel 12 on the protection cover 11 is located outside the front projection of the display panel 17 on the protection cover 11, and the front projection of the touch area c1 of the touch panel 12 on the protection cover 11 and the front projection of the display panel 17 on the protection cover 11 have overlapping areas.

The front projections of the first antenna 142 and the second antenna 143 on the protective cover 11 are located outside the front projection of the display panel 17 on the protective cover 11. The side of the second antenna 143 near the protective cover 11 is not provided with the touch panel 12 and the display panel 17, that is, the touch panel 12 and the display panel 17 will not shield the second antenna 143, and the area of the side of the second antenna 143 near the protective cover 11 may be referred to as a clearance area of the electrical control board 10. The side of the first antenna 142, which is close to the protective cover plate 11, is provided with a connection area c2 of the touch panel 12, and no display panel 17 is provided; in this way, the shielding of the first antenna 142 and the second antenna 143 by the display panel 17 and the touch panel 12 can be avoided, so as to avoid the interference of the signals of the first antenna 142 and the second antenna 143 by the display panel 17 and the touch panel 12.

As shown in fig. 9, the electrical control board 10 may further include a ground connector 18, the ground connector 18 may be connected to the display panel 17 and the switching circuit board 13, respectively, and the ground connector 18 may be grounded, and the ground connector 18 may be at least one of conductive foam, a metal column, and a conductive wire. The display panel 17 may include a display screen and a package housing located outside the display screen, where the package housing may be made of metal, and the number of the grounding connectors 18 may be at least two, so that the package housing switching circuit board 13 of the display panel 17 has a good grounding effect, and the problems of electromagnetic compatibility (English: electromagnetic Compatibility; abbreviated: EMC) such as screen display and display error on the display panel 17 can be avoided.

Fig. 11 is a schematic structural diagram of another electrical control board 10 according to an embodiment of the present utility model, and fig. 12 is a schematic structural diagram of a connection structure of a flexible connection board 19 according to an embodiment of the present utility model, referring to fig. 11 and 12, optionally, the electrical control board 10 may further include a flexible circuit board 19, where the flexible circuit board 19 is located between the display panel 17 and the switch circuit board 13, and the flexible circuit board 19 is connected to the display panel 17 and the switch circuit board 13, respectively. The display panel 17 may be electrically connected to the relay circuit board 13 through the flexible circuit board 19. The shortest distance between the flexible circuit board 19 and the first antenna 142 and the second antenna 143 in the first direction f1 is greater than or equal to 20 mm, and the first direction f1 is a direction parallel to the board surface of the adapting circuit board 13, so that signal crosstalk between the flexible circuit board 19 and the first antenna 142 and the second antenna 143 can be avoided.

Fig. 13 is a schematic diagram of a connection structure of a switching circuit board 13 according to an embodiment of the present utility model, referring to fig. 13, an electrical control board 10 may further include components such as a physical key 15 and a rotary switch 16, where the physical key 15 and the rotary switch 16 may be mounted on a protective cover 11 and electrically connected to the switching circuit board 13. The front projection of the first antenna 142 on the protective cover 11 is located outside the front projection of the physical key 15 and the rotary switch 16 on the protective cover 11. In this way, the physical key 15 and the rotary switch 16 can be prevented from interfering with the first antenna 142. The electric control board 10 may further include a central processing unit (english: central Processing Unit; abbreviated: CPU) that may be electrically connected to the chip portion 1412 and may also be electrically connected to the touch panel 12 and the display panel 17.

Fig. 14 is a schematic structural diagram of an antenna assembly 14 according to an embodiment of the present utility model, referring to fig. 14, optionally, at least one of the first antenna 142 and the second antenna 143 includes a high-frequency radiation branch a1, a low-frequency radiation branch a2, a ground branch a3, and a feeding branch a4. The high-frequency radiation branch a1 and the low-frequency radiation branch a2 are both electrically connected to one end of the feed branch a4, and the other end of the feed branch a4 is electrically connected to the chip portion 1412. The feed branch a4 is also electrically connected to one end of the ground branch a3, and the other end of the ground branch a3 is grounded.

At least one of the first antenna 142 and the second antenna 143 further includes a feeding point p1 (english: port) provided at the other end of the feeding branch a4, the feeding point p1 being electrically connected to the chip part 1412 to realize feeding of the first antenna 142 or the second antenna 143. The switching circuit board 13 may supply power to the antenna assembly 14, and excite the frequency band of the antenna assembly 14, so that the antenna assembly 14 receives and transmits the corresponding frequency band. The antenna signal may be input from the first antenna 142 or the second antenna 143 at the feeding point p 1. The low-frequency radiation branch a2 may be a radiation branch of a 2.4G (gigahertz, GHz) signal, that is, the resonant frequency supported by the low-frequency radiation branch a2 may be a wireless fidelity (WiFi) 2.4G frequency band, the high-frequency radiation branch a1 is a radiation branch of a 5G signal, that is, the resonant frequency supported by the low-frequency radiation branch a2 may be a WiFi5G frequency band, and the length of the high-frequency radiation branch a1 may be one quarter of the wavelength of the received signal. The frequency band radiated by the low-frequency radiating branch a2 is different from the second frequency band, so that the antenna component 141 covers various frequency bands, different frequency band ranges are satisfied, and the diversity of the frequency band range of the antenna component 141 is increased.

The ground branch a3 can connect the feed branch a4 to ground to form a ground loop. The length of the grounding branch a3 can be adjusted to adjust the size of a grounding loop, so that the impedance matching of the component is adjusted, and the standing wave performance of the filling component is optimized.

Fig. 15 is a schematic structural diagram of another antenna assembly 14 according to an embodiment of the present utility model, referring to fig. 15, optionally, at least one of the first antenna 142 and the second antenna 143 further includes a coupling branch a5, the coupling branch a5 is located at a side of the feeding branch a4 away from the grounding branch a3, at least a portion of the coupling branch a5 is parallel to the feeding branch a4, and one end of the coupling branch a5 is Grounded (GND). The coupling branch a5 can be used for optimizing antenna standing waves and widening high-frequency bandwidth, so that the high-frequency bandwidth can meet the requirement of 5.1 GHz-5.9 GHz. Illustratively, the board of the connection substrate 1411 is FR4, the spacing between the coupling branch a5 and the feed branch a4 may be 0.7mm, and the coupling branch a5 may be 4.5mm in length.

In the embodiment of the present utility model, the first antenna 142 and the second antenna 143 may be miniaturized dual-node inverted-F antennas, which can meet the use requirements of WiFi6 and Bluetooth Low Energy (BLE), and WiFi and bluetooth may share one antenna assembly 14. In addition, the coupling branch a5 is introduced, so that the antenna high frequency has a wider bandwidth, and the problem of poor standing wave of the antenna 5G frequency band caused by the influence of the outside is avoided.

The working frequency of the antenna assembly 14 in the 2.4G frequency band is 2.4G-2.5G, the working frequency of the 5G frequency band is 5.1G-5.9G, the antenna assembly has higher radiation efficiency, the average value of the working efficiency of the 2.4G frequency band and the working efficiency of the 5G frequency band of the antenna are more than or equal to 50%, and the Voltage Standing Wave Ratio (VSWR) is less than or equal to 2.

Alternatively, as shown in fig. 12, the interposer circuit board 13 may have a quadrilateral shape, and the interposer circuit board 13 has opposite first and second edges 131, 132; the front projection of the first antenna 142 on the protective cover 11 and the front projection of the first edge 131 on the protective cover 11 have overlapping areas, and the front projection of the second antenna 143 on the protective cover 11 and the front projection of the second edge 132 on the protective cover 11 have overlapping areas. As such, the first antenna 142 and the second antenna 143 may radiate signals in different directions to improve the radiating capability of the antenna assembly 14.

Fig. 16 is a simulation graph of S11 of the antenna assembly 14 shown in fig. 1, and fig. 17 is a simulation graph of VSWR of the antenna assembly 14 shown in fig. 1, please refer to fig. 16 and 17, S11 referring to return loss of the antenna assembly 14. The antenna assembly 14 provided by embodiments of the present utility model operates at frequencies of approximately 2.4GHz and 5GHz.

As shown in fig. 16, the abscissa represents the frequency (unit, GHz) of the antenna assembly 14, and the ordinate represents the return loss (unit, dB) of the antenna assembly 14. The coordinates at six different frequencies within the operating band of the antenna assembly 14 are: m1 (2.5000, -15.0844), m2 (2.4000, -14.5331), m3 (2.4500, -14.8087), m4 (5.1500, -10.0874), m5 (5.6000, -19.7386), m6 (5.8500, -26.2945). It can be seen that the return loss of the antenna assembly 14 is less than or equal to-10 dB in the operating frequency range, which can reflect the higher transmission efficiency of the antenna assembly 14.

As shown in fig. 17, the abscissa represents the frequency (unit, GHz) of the antenna assembly 14, and the ordinate represents the value of the Voltage Standing Wave Ratio (VSWR) of the antenna assembly 14. The coordinates at five different frequencies within the operating band of the antenna assembly 14 are: m1 (2.4000,1.4620), m2 (2.5000,1.4275), m3 (5.1500,1.9224), m4 (5.8000,1.0853), m5 (5.9000,1.1217). It can be seen that the VSWR of the antenna assembly 14 is less than or equal to 2 over the operating frequency range, and the antenna is well-matched over the operating wide frequency range, which is advantageous for long-term stable operation of the antenna assembly 14.

The intelligent household appliances in the embodiment of the utility model can comprise household appliances such as an intelligent refrigerator, an intelligent washing machine, an intelligent air conditioner and the like.

In summary, the embodiment of the utility model provides a household appliance including an appliance control board and an appliance main body, wherein the appliance control board may include a protective cover plate, a touch panel, a switching circuit board and an antenna assembly. The touch panel is provided with a touch area, the antenna assembly comprises an antenna control board and a first antenna which are connected, and the orthographic projection of the first antenna on the protective cover plate is positioned outside the orthographic projection of the touch area on the protective cover plate. The first antenna of the antenna assembly can be prevented from being blocked by the touch control area of the touch control panel, interference caused by the touch control panel to the receiving and transmitting of the wireless signals of the antenna assembly can be avoided, the problem that the stability of the wireless signals of the household appliance is poor in the related art can be solved, and the effect of improving the stability of the wireless signals of the household appliance is achieved.

The term "at least one of a and B" in the present utility model is merely an association relationship describing an association object, and means that three relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist together, and B exists alone. Similarly, "at least one of A, B and C" means that there may be seven relationships, which may be represented: there are seven cases where a alone, B alone, C alone, a and B together, a and C together, C and B together, A, B and C together.

In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model, but rather, the utility model is to be construed as limited to the appended claims.

Claims (10)

1. The household appliance is characterized by comprising an appliance control board and an appliance main body, wherein the appliance control board is positioned on the appliance main body and is electrically connected with the appliance main body;

the electric appliance control panel comprises a protective cover plate, a touch panel positioned on the protective cover plate, a switching circuit board and an antenna assembly;

the touch panel is provided with a touch area, and the touch area is used for receiving a touch operation instruction;

the antenna assembly is located on one face, away from the touch panel, of the switching circuit board, the antenna assembly comprises an antenna control board and a first antenna which are connected, and orthographic projection of the first antenna on the protective cover plate is located outside orthographic projection of the touch area on the protective cover plate.

2. The household appliance of claim 1, wherein the touch panel further comprises a connection region located outside at least a portion of an edge of the touch region, the connection region being connected with the appliance body;

and the front projection of the first antenna on the protective cover plate and the front projection of the connecting area on the protective cover plate have overlapping areas.

3. The household appliance according to claim 1, wherein the orthographic projection of at least part of the first antenna on the protective cover plate is located outside the orthographic projection of the transit circuit board on the protective cover plate.

4. A household appliance as claimed in claim 3, wherein the antenna control board comprises a connection substrate and a chip part, the chip part and the first antenna are both located on the connection substrate, and the chip part and the first antenna are both electrically connected with the connection substrate;

at least part of the connecting substrate is positioned on the switching circuit board and is electrically connected with the switching circuit board, and the orthographic projection of the chip part on the protection cover plate and the orthographic projection of the switching circuit board on the protection cover plate have overlapping areas.

5. The household appliance of claim 4, wherein the antenna assembly further comprises a second antenna;

the second antenna is electrically connected with the chip part, at least part of the orthographic projection of the second antenna on the protection cover plate is positioned outside the orthographic projection of the switching circuit board on the protection cover plate, and the orthographic projection of the second antenna on the protection cover plate is positioned outside the orthographic projection of the touch panel on the protection cover plate.

6. The household appliance of claim 5, wherein the appliance control board further comprises a display panel, the display panel being located between the touch panel and the switching circuit board;

the orthographic projection of the connecting area of the touch panel on the protective cover plate is positioned outside the orthographic projection of the display panel on the protective cover plate;

the front projections of the first antenna and the second antenna on the protective cover plate are located outside the front projection of the display panel on the protective cover plate.

7. The household appliance of claim 6, wherein the appliance control board further comprises a flexible circuit board positioned between the display panel and the switching circuit board, the flexible circuit board being connected to the display panel and the switching circuit board, respectively;

the shortest distance between the flexible circuit board and the first antenna and the shortest distance between the flexible circuit board and the second antenna in the first direction are all larger than or equal to 20 mm, and the first direction is a direction parallel to the board surface of the switching circuit board.

8. The household appliance of claim 5, wherein at least one of the first antenna and the second antenna comprises a high frequency radiation branch, a low frequency radiation branch, a ground branch, and a feed branch;

the high-frequency radiation branch and the low-frequency radiation branch are electrically connected with one end of the feed branch, and the other end of the feed branch is electrically connected with the chip part;

the feed branch is also electrically connected with one end of the grounding branch, and the other end of the grounding branch is grounded.

9. The household appliance of claim 8, wherein at least one of the first antenna and the second antenna further comprises a coupling stub, the coupling stub being located on a side of the feed stub remote from the ground stub, and at least a portion of the coupling stub being parallel to the feed stub, an end of the coupling stub being grounded.

10. The household appliance of claim 5, wherein the transit circuit board is quadrilateral, the transit circuit board having opposing first and second edges;

the front projection of the first antenna on the protective cover plate and the front projection of the first edge on the protective cover plate have overlapping areas, and the front projection of the second antenna on the protective cover plate and the front projection of the second edge on the protective cover plate have overlapping areas.