CN215581102U

CN215581102U - Control button and water heater

Info

Publication number: CN215581102U
Application number: CN202023113893.0U
Authority: CN
Inventors: 林凯; 盛保敬; 白智锐; 李雪; 陈小雷
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Wuhan Haier Water Heater Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Wuhan Haier Water Heater Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-01-18
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a control key and a water heater, wherein the control key comprises: a key sticker; the NFC label is arranged in the key sticker and comprises an NFC chip and a coil; the switch is arranged in the key sticker, the stress surface faces the upper surface of the key sticker, the switch is electrically connected between the NFC chip and the coil and used for controlling the circuit on-off states of the NFC chip and the coil, and when the switch is closed, the NFC label can be communicated with the NFC active module through NFC. The control key can be separated from the controlled electric appliance body and independently arranged, and the control key and the controlled electric appliance body adopt NFC wireless communication, so that a series of defects that the traditional key needs to be assembled on an electric appliance by digging holes can be overcome. In addition, the key is mainly arranged in the key sticker, is small in size, is convenient to transfer and arrange, and can be arranged at any position convenient to operate.

Description

Control button and water heater

Technical Field

The utility model belongs to the technical field of keys, and particularly relates to a control key and a water heater.

Background

At present, the key control function of the household appliance is mainly controlled by a mechanical key and a capacitive key.

Mechanical keys require holes to be cut in the panel and affect the overall appearance and performance of the user experience.

The capacitive sensing key is characterized in that a corresponding key sensing area is arranged on a panel, and long and narrow sensing electrodes are plated on the four sides of the back of the panel, so that a low-voltage alternating current electric field is formed in a conductor. For the capacitive sensing key, theoretically, it is required that the closer the key area on the panel is to the sensing electrode of the key, and generally, it is impossible for large electronic products to do so, and at this time, it is necessary to provide a conductive material to connect the two closely. In order to meet the requirement, a conductive sponge or a conductive rubber is filled between the panel and the sensing electrode in the industry at present to connect the panel and the sensing electrode. However, the conductive sponge and the conductive rubber have the defects of uncontrollable deformation, large dielectric constant drift, large influence of environmental factors and the like, so that the capacitive sensing key of the structure has poor sensitivity consistency, is easy to damage and has short service life. In addition, the capacitive sensing key is insensitive to sensing when water exists in the sensing area or when a user wets hands.

Disclosure of Invention

The utility model provides a control key, which aims to solve a series of problems that a hole needs to be formed in a panel during mechanical key assembly in the prior art, a capacitive key is easy to damage, the service life is short and the like.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a control key, comprising:

a key sticker;

the NFC label is arranged in the key sticker and comprises an NFC chip and a coil;

the switch is arranged in the key sticker, the stress surface faces the upper surface of the key sticker, the switch is electrically connected between the NFC chip and the coil and used for controlling the circuit on-off states of the NFC chip and the coil, and when the switch is closed, the NFC label can be communicated with the NFC active module through NFC.

Furthermore, the button sticker is of a flexible plate-shaped structure and comprises a waterproof layer located on the upper layer and a base layer located on the lower layer, and the NFC label is arranged between the waterproof layer and the base layer.

Furthermore, the lower surface of the base layer is also provided with an adhesive layer.

Furthermore, the surface of the key sticker is divided into a plurality of functional areas, and a group of NFC tags and switches are correspondingly arranged below each functional area.

Furthermore, a barrier strip is arranged between every two adjacent functional areas, the barrier strip is arranged in the key paste, and at least one of the upper end or the lower end of the barrier strip is fixed with the key paste.

Further, the NFC active module includes:

an NFC active circuit for connecting to a control module;

a matching circuit;

a filter circuit;

an antenna connected to the NFC active circuit sequentially through the matching circuit and the filter circuit.

Furthermore, the matching circuit and the filter circuit are provided with two paths, and the two paths are respectively connected with the receiving end and the transmitting end of the NFC active circuit correspondingly.

Further, the matching circuit comprises a first resistor, a first capacitor and a second capacitor, one end of the first resistor is connected with the first end of the antenna, one of the other ends of the first resistor is connected with the first capacitor, the other end of the first resistor is connected with the second capacitor, the first capacitor is connected with the filter circuit, and the second capacitor is connected with the transient surge suppression end of the NFC active circuit.

Further, the filter circuit includes a third capacitor and a first inductor, one end of each of the third capacitor and the first inductor is connected to the first capacitor, the other end of the first inductor is correspondingly connected to the receiving end or the transmitting end of the NFC active circuit, and the other end of the third capacitor is connected to the transient surge suppression end of the NFC active circuit.

The utility model also provides a water heater, which comprises a machine body, a control module arranged in the machine body and any one of the recorded control keys, wherein the control module is connected with the NFC active module;

the key sticker is arranged on the machine body or is arranged separately from the machine body.

Compared with the prior art, the utility model has the advantages and positive effects that: the control key can be separated from the controlled electric appliance body and independently arranged, and the control key and the controlled electric appliance body adopt NFC wireless communication, so that a series of defects that the traditional key needs to be assembled on an electric appliance by digging holes can be overcome. In addition, the key is mainly arranged in the key sticker, is small in size, is convenient to transfer and arrange, and can be arranged at any position convenient to operate.

Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic top surface structure diagram of an embodiment of a control key according to the present invention;

fig. 2 is a schematic circuit connection diagram of an NFC tag in an embodiment of a control key proposed in the present invention;

FIG. 3 is a schematic diagram illustrating a communication status of a control button according to the present invention;

FIG. 4 is a schematic diagram of an internal structure of an embodiment of a control button according to the present invention;

fig. 5 is a schematic circuit connection diagram of an NFC active module in an embodiment of a control key proposed in the present invention;

FIG. 6 is a schematic structural diagram of a water heater according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a water heater according to still another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Near Field communication (nfc), which is a non-contact device identification and interconnection technology, can operate within a frequency range of 13.56MHz within a distance of several centimeters (usually 15 centimeters), automatically identify a target object and acquire associated data through a radio frequency signal, and meet requirements for information exchange, content access, and the like between two devices without manual intervention for identification. Based on this, the present invention provides a control key using NFC communication technology, and a specific embodiment will be described below.

Example one

The present embodiment proposes a control key, as shown in fig. 1 and fig. 2, including a key sticker 11, an NFC tag 12, and a switch 13.

The NFC tag 12 is disposed in the key sticker 11 and includes an NFC chip 121 and a coil 122.

The switch 13 is disposed in the key sticker 11, the stress surface faces the upper surface of the key sticker 11, the switch 13 is electrically connected between the NFC chip 121 and the coil 122, and is used for controlling the on-off state of the circuit of the NFC chip 121 and the coil 122, and when the switch 13 is closed, as shown in fig. 2 and 3, the NFC tag 12 can communicate with the NFC active module through NFC.

The switch 13 may be implemented by a mechanical trigger switch, and the switch 13 may be triggered by pressing the upper surface of the key sticker 11 and moving the upper surface of the key sticker 11 downward. When pressed again, the on/off state of the control switch 13 can be switched.

The NFC active module 14 is arranged in a controlled electric appliance and connected with a control module in the electric appliance through a wire, the NFC active module 14 and the control module can perform two-way communication, and the NFC active module 14 is powered by a circuit in the electric appliance.

A control command for controlling an electrical appliance is written in the NFC chip 121, and when the distance between the NFC chip 121 and the NFC active module 14 is within a communication range, a specific radio frequency signal communication connection can be established between the NFC chip 121 and the NFC active module. When the NFC active module 14 establishes connection with the NFC chip 121, the control command written in the NFC chip 121 is sent to the NFC active module 14, and is sent to the control module of the electrical appliance, and the electrical appliance executes corresponding control.

The premise that the NFC chip 121 can communicate with the NFC active module 14 is that the NFC chip 121 and the coil 122 form a complete loop, in this scheme, the switch 13 is arranged between the NFC chip 121 and the coil 122, and the user controls whether a control command in the NFC chip is received by the NFC active module 14 by controlling the on-off state of the switch 13, so that whether the control command can be executed by the control appliance can be realized.

The control button of this embodiment can with controlled electrical apparatus main part separation, independent setting, especially when being used for controlling like the higher electrical apparatus of mounted position such as electric water heater, the inconvenient operation electrical apparatus panel of user can set up this control button in the position of the convenient operation in electrical apparatus below, brings very big facility for the use.

NFC chip 121 and coil 122 adopt NFC wireless communication, can solve a series of drawbacks such as traditional button needs to dig hole assembly on the electrical apparatus.

In addition, the key is mainly arranged in the key sticker, is small in size, is convenient to transfer and arrange, and can be arranged at any position convenient to operate.

The key sticker 11 preferably has a flexible plate-like structure, can be changed adaptively according to the shape of the sticking surface to which the key sticker is stuck, and has strong adaptability.

As shown in fig. 4, the key sticker 11 includes a waterproof layer 111 on an upper layer and a base layer 112 on a lower layer, and the NFC tag 12 is disposed between the waterproof layer 111 and the base layer 112.

Preferably, a closed space is formed between the waterproof layer 111 and the base layer 112, and the NFC tag 12 is disposed in the closed space, so that the NFC tag can be isolated from the external environment, prevent contamination caused by external dust and other contaminants, and prolong the service life of the NFC tag.

When the control button of this embodiment is set up in the bathroom for when controlling electrical apparatus such as electric hot water, the surrounding environment is moist, and the user may be operating switch under the wet state of hand, and waterproof layer 111 still plays inside NFC label 12 of protection, prevents to receive the effect of the corruption of humid environment, can be favorable to prolonging NFC label 12's life equally.

In order to fix the control key conveniently, the lower surface of the base layer 112 is further provided with an adhesive layer 113, and the adhesive layer 113 is adhered to any position convenient for a user to operate.

At present, the electric appliance has more functions of executing and controlling, and can comprise various adjusting function keys besides a basic power key, wherein each function key can be respectively and independently arranged, and a user can select and arrange each function key according to actual needs.

Each function button of independent setting loses easily, needs the manual cooperation of user to arrange, has certain tediousness, prefers in this embodiment to integrate a plurality of function buttons together to improve the integrated level of a plurality of function buttons.

As shown in the figure, the surface of the key sticker 11 is divided into a plurality of functional areas, in this embodiment, a key applied to control of an electric water heater is taken as an example for description, the key sticker 11 is divided into 5 functional areas, and a group of NFC tags and switches are correspondingly arranged below each functional area.

The control command written in the NFC tag in each functional area corresponds to a function executed in the area, the functions corresponding to the 5 divided functional areas in this embodiment are heat preservation, temperature adjustment, bacteriostasis, power adjustment, and power on/off respectively, and for convenience of prompting, prompt characters, symbols, patterns, and the like are set in a manner that a sticker is printed or adhered on the upper surface of each functional area.

Because each functional area is arranged closely, the integration level is high, and in order to prevent that when a user presses one of the switches, the adjacent functional areas are driven to be linked, and other functions are triggered by mistake, a barrier strip 114 is preferably arranged between the two adjacent functional areas.

As shown in fig. 4, the barrier rib 114 is disposed in the key sticker 11 along a direction perpendicular to the surface of the key sticker 11, and at least one of an upper end or a lower end of the barrier rib 114 is fixed to the key sticker 11. That is, the upper end of the barrier rib 11 may be fixed to the waterproof layer 111, or the lower end of the barrier rib 11 may be fixed to the base layer 112, or both ends of the barrier rib 11 may be fixed to the waterproof layer 111 and the base layer 112, respectively.

By arranging the barrier strips 114, when a user presses one of the keys, under the supporting action of the barrier strips 114, only the waterproof layer 111 of the functional area acts downwards to trigger the switch in the area, but the waterproof layer 111 of the adjacent functional area does not act, so that the problem of false triggering can be solved.

As a preferred embodiment, as shown in fig. 5, the NFC active module 14 includes an NFC active circuit, a matching circuit, a filter circuit, and an antenna, where the NFC active circuit is used to connect to the control module, the matching circuit is used to match and transmit the received and transmitted radio frequency signals, and the filter circuit is used to filter interference signals in the circuit, so as to improve the transmission accuracy of the signals.

The antenna is connected to the NFC active circuit sequentially through the matching circuit and the filter circuit, and is configured to transmit or receive a radio frequency signal, thereby implementing communication between the NFC active module 14 and the NFC chip 121.

The matching circuit and the filter circuit are provided with two paths which are respectively connected with the receiving end and the transmitting end of the NFC active circuit correspondingly. For matched reception of a received signal and matched transmission of a transmitted signal, respectively.

As shown in fig. 5, for a specific implementation circuit schematic diagram of the NFC active module 14, a transmission path of the matching circuit includes a first resistor R1, a first capacitor C1, and a second capacitor C2, one end of the first resistor R1 is connected to the first end of the antenna, one of the other ends of the first resistor R1 is connected to the first capacitor C1, the other one of the other ends of the first resistor R1 is connected to the second capacitor C2, the first capacitor C1 is connected to the filter circuit, and the second capacitor C2 is connected to the transient surge suppression terminal TVSS of the NFC active circuit.

By setting the appropriate values for the first capacitor C1 and the second capacitor C2, the transmission signal is matched to an appropriate frequency and transmitted through the antenna.

The receiving path of the matching circuit is constructed in a similar manner to the transmitting path, and is not described herein.

As shown in fig. 5, a receiving path of a filter circuit is taken as an example, the filter circuit includes a third capacitor C3 and a first inductor L1, one end of the third capacitor C3 and one end of the first inductor L1 are respectively connected to the first capacitor C1, the other end of the first inductor L1 is correspondingly connected to a receiving end of the NFC active circuit, and the other end of the third capacitor is connected to a transient surge suppression end of the NFC active circuit. The third capacitor C3 and the first inductor L1 form an EMC filter circuit, which can filter the noise of the transmission signal and suppress noise waves.

The transmitting path and the receiving path of the filter circuit are similar, and are not described herein.

Example two

The embodiment also provides a water heater, as shown in fig. 6, which includes a body 2, a control module disposed in the body 2, and a control key 1, as shown in fig. 1 to 5, where the control key 1 includes a key sticker 11, an NFC tag 12, and a switch 13.

The NFC active module 14 is arranged in the machine body 2 and is connected with the control module in the machine body 2 through a wire, the NFC active module 14 and the control module can carry out two-way communication, and the NFC active module 14 is powered by a circuit in an electric appliance.

Other structures of the control key 1 can be found in the description of the first embodiment, and are not described herein.

Note that, the key sticker 11 of the present embodiment is provided on the body 2, and specifically, may be provided on a panel near the lower end of the body.

As can be seen from the above, the NFC active module is disposed inside the body 2, and the coil 1312 is disposed outside the body 2, so that the radio frequency field is perpendicular to the plane of the coil by properly positioning the NFC active module and the coil 122, and the two can maintain smooth and error-free communication.

The waterproof layer of the upper surface of the control button 1 is arranged, so that when the control button is applied to a bathroom humid environment, the NFC label 12 in the bathroom can be protected and protected, and the risk of electric shock can be avoided when a user operates an electric appliance when hands are wet.

As can be seen from the above, the NFC active module is disposed inside the body 2, and the coil 122 is disposed outside the body 2, so that the radio frequency field is perpendicular to the plane of the coil by reasonably disposing the NFC active module and the coil 122, and the NFC active module and the coil can maintain smooth and error-free communication.

EXAMPLE III

The embodiment provides another structural form of a water heater, as shown in fig. 7, which includes a body 2, a control module disposed in the body 2, and a control key 1, as shown in fig. 1 to 5, where the control key 1 includes a key sticker 11, an NFC tag 12, and a switch 13.

The control module, the NFC active module, the isolating switch and the like are arranged inside the machine body 2. The two can communicate bidirectionally by wired connection to the control module in the body 2, the NFC active module 14 being powered by the circuitry in the appliance.

Note that the key sticker 11 is provided separately from the main body 2. Specifically, the key sticker 11 is provided on one side of the body 2.

This control button 1 of water heater is through separating with fuselage 2, and independent setting when 2 mounted position of fuselage are higher, can set up control button 1 in the position of 2 below convenient operations of fuselage, brings very big facility for the use.

As can be seen from the above, the NFC active module is disposed inside the body 2, and the coil 1312 is disposed on one side of the body 2, so that the radio frequency field is perpendicular to the plane of the coil by properly positioning the NFC active module and the coil 122, and the two can maintain smooth and error-free communication.

In order to fix the control key conveniently, the lower surface of the base layer 1332 is further provided with an adhesive layer 1333, and the adhesive layer 1333 is adhered to any position near the water heater, so that the operation of a user is facilitated.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A control key, comprising:

a key sticker;

2. The control key of claim 1, wherein the key sticker is of a flexible plate-like structure and comprises a waterproof layer on an upper layer and a base layer on a lower layer, and the NFC tag is arranged between the waterproof layer and the base layer.

3. The control key of claim 2, wherein the lower surface of the base layer is further provided with an adhesive layer.

4. The control key according to claim 1, wherein the surface of the key sticker is divided into a plurality of functional areas, and a group of NFC tags and switches are correspondingly arranged below each functional area.

5. The control key according to claim 4, wherein a barrier strip is arranged between two adjacent functional areas, the barrier strip is arranged in the key sticker, and at least one of the upper end and the lower end of the barrier strip is fixed with the key sticker.

6. Control key according to any of claims 1-5, characterized in that the NFC active module comprises:

an NFC active circuit for connecting to a control module;

a matching circuit;

a filter circuit;

7. The control key of claim 6, wherein the matching circuit and the filter circuit have two paths, and are respectively connected to a receiving end and a transmitting end of the NFC active circuit.

8. The control button according to claim 7, wherein the matching circuit comprises a first resistor, a first capacitor and a second capacitor, one end of the first resistor is connected to the first end of the antenna, one of the other ends of the first resistor is connected to the first capacitor, the other end of the first resistor is connected to the second capacitor, the first capacitor is connected to the filter circuit, and the second capacitor is connected to the transient surge suppression end of the NFC active circuit.

9. The control key according to claim 8, wherein the filter circuit includes a third capacitor and a first inductor, one end of each of the third capacitor and the first inductor is connected to the first capacitor, the other end of the first inductor is correspondingly connected to the receiving terminal or the transmitting terminal of the NFC active circuit, and the other end of the third capacitor is connected to the transient surge suppression terminal of the NFC active circuit.

10. A water heater comprising a body and a control module disposed in the body, further comprising the control button of any one of claims 1-9, the control module being connected to the NFC active module;