CN210629448U - Switch and electric appliance - Google Patents

Abstract

The utility model provides a switch and electrical apparatus, this switch includes: the panel is provided with a plurality of induction electrodes which are arranged at intervals on the circumference; the knob is attracted to the panel by a magnet and can rotate relative to the panel, a touch electrode for human body touch is arranged on the knob, the touch electrode is coupled with the induction electrode to form two capacitive touch induction electrodes, and the touch electrode is coupled with different induction electrodes to form different touch signals along with the change of the rotation angle of the knob; the signal processing unit comprises an MCU (microprogrammed control unit), wherein the MCU is connected with the plurality of induction electrodes so as to obtain the initial position, the rotation angle and the rotation direction of the knob according to the position of the induction electrode receiving the touch signal. The switch is easy to clean and replace, the influence of the change of the magnetic field on the detection is not needed to be considered in the rotating process of the knob, and the production difficulty is reduced.

Description

Switch and electric appliance

Technical Field

The utility model relates to a technical field of switch, in particular to switch and electrical apparatus thereof.

Background

The switch in the household appliance industry comprises a mechanical switch and an inductive switch; the mechanical switch is easy to cause the phenomena that the knob cannot rotate and is difficult to clean in the occasion that the environment is easy to be polluted, and the knob is difficult to replace when abnormal conditions occur; the induction switch judges the angle position by detecting the magnetic field intensity change, and has higher requirement on the consistency of the magnet during batch production, and the influence of the magnetic field change on the detection needs to be considered.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem in the above-mentioned technique at least to a certain extent, provide a switch promptly, this switch easily washs and changes, rotates the in-process at the knob, need not to consider the influence of magnetic field variation to the detection, reduces the degree of difficulty of production.

To achieve the above object, the present invention provides in one aspect a switch, including:

a faceplate having a plurality of sensing electrodes arranged at circumferential intervals;

the knob is attracted to the panel by the magnet and can rotate relative to the panel, a touch electrode for human body touch is arranged on the knob, the touch electrode is coupled with the induction electrode to form two capacitive touch induction electrodes, and the touch electrode is coupled with different induction electrodes to form different touch signals along with the change of the rotation angle of the knob;

and the signal processing unit comprises an MCU (microprogrammed control unit), and the MCU is connected with the plurality of induction electrodes so as to acquire the initial position, the rotation angle and the rotation direction of the knob according to the position of the induction electrode receiving the touch signal.

According to the switch of the utility model, the knob and the panel can be detachably connected through the magnet adsorption between the panel and the knob, thereby being convenient for cleaning the switch and replacing parts; the operation function of the knob is realized in a capacitive touch sensing mode, namely, when a human body touches the rotary knob, human body charges are transferred to the touch electrode, the touch electrode is coupled with the induction electrode to form a corresponding touch signal, and the MCU detects the position of the induction electrode to confirm the position change of the knob, so that the high requirement of a magnetic sensor on an environmental magnetic field can be avoided, and the production difficulty is reduced.

In addition, according to the present invention, the switch provided in the above embodiment may further have the following additional technical features:

according to the utility model discloses an embodiment is equipped with a first location magnet between two adjacent induction electrodes, be equipped with a second location magnet on the knob, second location magnet along with the turned angle's of knob change and the first location magnet adsorption location of difference. The induction type switch in the related technology has no mechanical positioning function, lacks the hand feeling performance after the knob is rotated to a corresponding angle, and cannot predict whether the rotation is in place; and this scheme is through setting up first location magnet and second location magnet for when the knob rotates, second location magnet leaves initial position, and the resistance is less when passing through the response electrode, when rotatory to first location magnet, can adsorb the location with first location magnet, forms the resistance of mechanical knob and feels, thereby knows whether the rotation of knob targets in place.

According to the utility model discloses an embodiment, the center of panel is equipped with first fixed magnet, the center of knob is equipped with the fixed magnet of second, first fixed magnet with the fixed magnet of second adsorbs the connection, so that the knob is connected with the magnet adsorption mode the panel is and relative the panel is rotatable.

According to the utility model discloses an embodiment, a plurality of response electrodes are the circumference array setting.

According to the utility model discloses an embodiment, a plurality of first location magnet with the center of panel is the angular position such as axle center and distributes on the panel.

According to the utility model discloses an embodiment, the shell of knob is electrically conductive material, the shell with connect through electrically conductive between the touch electrode.

According to the utility model discloses an embodiment, touch electrode's cross section is fan-shaped.

According to the utility model discloses an embodiment, first location magnet second location magnet first fixed magnet with the equal longitudinal symmetry of second fixed magnet is cut apart into N utmost point portion and S utmost point portion, wherein, the N utmost point portion of first location magnet is suitable for the absorption connection the S utmost point portion of second location magnet.

In another aspect of the present invention, an electrical appliance is provided, comprising the aforementioned switch. According to the utility model discloses an electrical apparatus, through the setting of switch, both be convenient for to the maintenance of switch, can avoid using the high requirement of magnetic sensor to environmental magnetic field again, reduce the production degree of difficulty of switch.

In an aspect of the present invention, a switch is provided, which includes:

a faceplate having a plurality of sensing electrodes arranged in a circumferentially spaced array; the sensing electrode is suitable for sensing a human body touch signal;

and the signal processing unit comprises an MCU (microprogrammed control Unit), and the MCU is connected with the plurality of induction electrodes so as to acquire the position change of the induction electrodes according to the touch signals.

According to the utility model discloses a switch can use the human different response electrodes that point on the touch panel, realizes that the electrode response position changes, realizes corresponding function switching, realizes the function of switch.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a cross-sectional view of a switch according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a panel according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a knob according to embodiment 1 of the present invention;

fig. 4 is a schematic diagram of a switch according to embodiment 2 of the present invention;

description of reference numerals: switch 1, panel 100, induction electrode 101, first positioning magnet 102, first fixed magnet 103, knob 200, touch electrode 201, conductive piece 202, second positioning magnet 203, second fixed magnet 204.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The following describes a switch 1 according to an embodiment of the present invention with reference to the drawings.

Example 1

As shown in fig. 1 to 4, a switch 1 according to an embodiment of the present invention includes: panel 100, knob 200 and signal processing unit.

Specifically, the panel 100 has a plurality of sensing electrodes 101 arranged at circumferential intervals; the knob 200 is attracted to the panel 100 by a magnet and can rotate relative to the panel 100, a touch electrode 201 for a human body to touch is arranged on the knob 200, the touch electrode 201 is coupled with the induction electrode 101 to form two electrodes of capacitive touch induction, and the touch electrode 201 is coupled with different induction electrodes 101 to form different touch signals along with the change of the rotation angle of the knob 200; the signal processing unit includes an MCU, and the MCU is connected to the plurality of sensing electrodes 101 to obtain an initial position, a rotation angle, and a rotation direction of the knob 200 according to a position of the sensing electrode 101 receiving the touch signal.

It is understood that the plurality of sensing electrodes 101 are circumferentially spaced apart, such that the touch electrode 201 is coupled to different sensing electrodes 101 when the knob 200 is rotated with respect to the panel 100; touch electrode 201 supplies the human touch, and a plurality of response electrodes 101 are connected with MCU again for MCU detectable receives has touch signal's response electrode 101's position, and then can judge initial position, turned angle and the direction of rotation of knob, and when turned angle satisfied the requirement of predetermineeing, realize corresponding function switch, realizes switch 1's function.

Therefore, according to the switch 1 of the present invention, the panel 100 is connected to the knob 200 through the magnet absorption, so that the knob 200 is detachably connected to the panel 100, and when the switch 1 needs to be cleaned and replaced, the knob 200 is directly removed, so as to clean and replace parts of the switch 1; the operation function of the knob 200 is realized by a capacitive touch sensing manner, that is, when a human body touches the rotary knob 200, the human body charges are transferred to the touch electrode 201, the touch electrode 201 is coupled with the sensing electrode 101 to form a corresponding touch signal, and then the MCU detects the position of the sensing electrode 100 to confirm the position change of the knob 200, so as to avoid the high requirement of a magnetic sensor on the environmental magnetic field and reduce the production difficulty.

The MCU may be disposed in the panel 100, the panel 100 may be disposed at a fixed position of the electric product, and the corresponding functions of the electric product may be switched by operating the knob 200. The MCU may be a chip with touch functionality, for example: cypress, BYD, Microchip, etc.

Optionally, the shell of the knob 200 is made of a conductive material, and the shell made of the conductive material is connected with the touch electrode 201 through a conductive component 202; when a human body contacts the knob 200, the human body contacts the shell made of a conductive material, charges of the human body are transferred to the touch electrode 201 through the conductive piece 202, the touch electrode 201 can transfer the charges to the induction electrode 101 which is in contact with the touch electrode, and the MCU detects that the induction electrode 101 has the charges so as to confirm the initial position of the current knob 200; when the knob 200 is rotated at an angle, the touch electrode 201 is coupled with different sensing electrodes 101, the sensing electrodes 101 fed back to the MCU will change, the MCU obtains the rotation angle and the rotation direction of the knob 200 by determining the change direction and the change angle of the sensing electrodes 101, and then controls the electrical product to realize corresponding function switching according to the change amount of the corresponding knob 200.

In addition, the induction type switch has the hand feeling performance of rotating to the position of the mechanical switch. In some embodiments, referring to fig. 3, a first positioning magnet 102 is disposed between two adjacent sensing electrodes 101 on the panel 100, and a second positioning magnet 203 is disposed on the knob 200, wherein the second positioning magnet 203 adheres to different first positioning magnets 102 for positioning along with the change of the rotation angle of the knob 200. That is to say, when the knob 200 is rotated, the second positioning magnet 203 will also rotate along with the rotation, and in the rotation process, the resistance of the second positioning magnet 203 passing through the region of the induction electrode 101 is small, and when the second positioning magnet 203 rotates to the region of the first positioning magnet 102, the second positioning magnet will be attracted to the first positioning magnet 102 for positioning under the action of magnetic force, so as to form the resistance hand feeling of the mechanical knob, and thus, it is known whether the rotation of the knob 200 is in place; therefore, when the second positioning magnet 203 on the knob 200 corresponds to the first positioning magnet 102 on the panel 100, the two magnets attract each other to generate a certain resistance; in the rotating process, the required rotating force is small due to the small adsorption force; when the knob 200 is rotated to the first positioning magnet 102 at another position of the panel 100, the magnetic force increases, and the resistance is large, thereby generating a magnet resistance feeling of the rotation of the knob 200.

Further, the plurality of first positioning magnets 102 are distributed on the panel 100 at equal angular positions with the center of the panel 100 as the axial center, so that the knob 200 can be positioned more accurately between different gears.

Alternatively, each of the first positioning magnet 102 and the second positioning magnet 203 is divided into an N-pole portion and an S-pole portion in an up-down symmetrical manner, wherein the N-pole portion of the first positioning magnet 102 is adapted to be in suction connection with the S-pole portion of the second positioning magnet 203, so that the second positioning magnet 203 can be in suction connection with the first positioning magnet 102 when rotated to the position of the first positioning magnet 102. Of course, in another embodiment, the S-pole portion of the first positioning magnet 102 may be connected to the N-pole portion of the second positioning magnet 203 by attraction, so that the first positioning magnet 102 and the second positioning magnet 203 can be positioned by attraction.

In some embodiments, the center of the panel 100 is provided with a first fixed magnet 103, the center of the knob 200 is provided with a second fixed magnet 204, and the first fixed magnet 103 is connected with the second fixed magnet 204 in an adsorption manner, so that the knob 200 is connected with the panel 100 in a magnet adsorption manner and can rotate relative to the panel 100. Therefore, the first fixing magnet 103 and the second fixing magnet 204 are connected at the center of the panel 100 and the knob 200, so that the panel 100 and the knob 200 can be rotatably and detachably connected without occupying the space of the switch 1.

Further, the first fixed magnet 103 and the second fixed magnet 204 are both vertically and symmetrically divided into an N-pole portion and an S-pole portion, wherein the N-pole portion of the first fixed magnet 103 is connected to the S-pole portion of the second fixed magnet 204 in an attracting manner, so that the panel 100 is connected to the knob 200 in a magnet-attracting manner; when the cleaning knob is to be replaced, the knob 200 is directly pulled out, so that the first fixing magnet 103 and the second fixing magnet 204 are separated. Of course, in another embodiment, the S-pole portion of the first fixed magnet 103 may be connected to the N-pole portion of the second fixed magnet 204 by attraction, so that the first fixed magnet 103 and the second fixed magnet 204 may be connected by attraction.

Optionally, in conjunction with fig. 3, the plurality of sensing electrodes 101 are arranged in a circumferential array. That is, on the panel 100, the plurality of induction electrodes 101 are equidistantly distributed with the first fixed magnet 103 as the center of the shaft, so as to set the gear of the electric appliance.

In some embodiments, in conjunction with FIG. 4, the cross-section of touch electrode 201 is sector-shaped; the sector-shaped touch electrode 201 is beneficial to forming correspondence between the maximum area and the plurality of sensing electrodes 101 distributed at equal intervals on the panel 100 during rotation, so that the contact area between the touch electrode 201 and the sensing electrodes 101 is increased, and the sensitivity of touch sensing is improved.

Further, the cross section of the sensing electrode 101 is also designed in a sector shape, so as to further increase the contact area between the touch electrode 201 and the sensing electrode 101, and improve the sensitivity of touch sensing.

According to the utility model discloses an embodiment, the utility model discloses an electrical apparatus is still provided, including aforementioned switch 1. According to the utility model discloses an electrical apparatus, through switch 1's setting, both be convenient for to the maintenance of switch, can avoid using the high requirement of magnetic sensor to environmental magnetic field again, reduce the production degree of difficulty of switch, make inductive switch have the rotatory position of arriving of mechanical type switch simultaneously and feel.

Example 2

This patent is still compatible product normal use when not having the knob. Referring to fig. 4, in the present embodiment, the switch includes a panel 100 and a signal processing unit including an MCU. The panel 100 is provided with fan-shaped touch sensing electrodes 101 distributed at equal intervals. The human body can directly touch the sensing area and directly transfer the charges to the sensing electrode 101. Fingers slide on different touch electrodes 101 in a touch manner, and the MCU executes corresponding function change operation by detecting the position change of the sensing electrodes 101.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A switch, comprising:

a faceplate having a plurality of sensing electrodes arranged at circumferential intervals;

the knob is attracted to the panel by the magnet and can rotate relative to the panel, a touch electrode for human body touch is arranged on the knob, the touch electrode is coupled with the induction electrode to form two capacitive touch induction electrodes, and the touch electrode is coupled with different induction electrodes to form different touch signals along with the change of the rotation angle of the knob;

and the signal processing unit comprises an MCU (microprogrammed control unit), and the MCU is connected with the plurality of induction electrodes so as to acquire the initial position, the rotation angle and the rotation direction of the knob according to the position of the induction electrode receiving the touch signal.

2. The switch of claim 1, wherein a first positioning magnet is disposed between two adjacent sensing electrodes, and a second positioning magnet is disposed on the knob, and the second positioning magnet is attracted and positioned with a different first positioning magnet as the rotation angle of the knob changes.

3. The switch of claim 2, wherein a first fixed magnet is disposed in the center of the faceplate, and a second fixed magnet is disposed in the center of the knob, the first fixed magnet being in attractive communication with the second fixed magnet such that the knob is magnetically attached to the faceplate and rotatable relative to the faceplate.

4. The switch of claim 1, wherein the plurality of sensing electrodes are arranged in a circumferential array.

5. The switch of claim 2, wherein the plurality of first positioning magnets are distributed on the faceplate at equiangular positions about a center of the faceplate as an axial center.

6. The switch of claim 1, wherein the housing of the knob is made of a conductive material, and the housing is connected to the touch electrode through a conductive member.

7. The switch of claim 1, wherein the touch electrode is sector-shaped in cross-section.

8. The switch of claim 3, wherein the first positioning magnet, the second positioning magnet, the first fixed magnet, and the second fixed magnet are each divided into an N-pole portion and an S-pole portion in an up-down symmetrical manner, wherein the N-pole portion of the first positioning magnet is adapted to be attached to the S-pole portion of the second positioning magnet.

9. An electrical appliance comprising a switch as claimed in any one of claims 1 to 8.

10. A switch, comprising:

a faceplate having a plurality of sensing electrodes arranged in a circumferentially spaced array; the sensing electrode is suitable for sensing a human body touch signal;

and the signal processing unit comprises an MCU (microprogrammed control Unit), and the MCU is connected with the plurality of induction electrodes so as to acquire the position change of the induction electrodes according to the touch signals.

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