阅读说明：本技术 开关系统及搅拌机 (Switching system and mixer ) 是由 罗文选 郑新颜 祝志闪 于 2018-06-27 设计创作，主要内容包括：本发明公开的搅拌机及开关系统包括触控开关、与门电路及继电器。触控开关包括第一触控子开关及第二触控子开关,当触控开关被触发时,第一触控子开关及第二触控子开关同时导通或断开。与门电路包括两个输入端及一个输出端,第一触控子开关及第二触控子开关分别连接在两个输入端。继电器包括继电器控制部及继电器被控部,继电器控制部与输出端连接,继电器控制部能够选择性地控制继电器被控部断开或闭合。在第一触控子开关与第二触控子开关同时导通时才能够控制继电器被控部闭合,从而能够避免第一触控子开关或第二触控子开关因为出现故障而导通时使继电器被控部不受用户控制而闭合的情况发生,进而避免继电器被控部不受控制而伤害用户的情况。(The invention discloses a stirrer and a switch system. The touch switch comprises a first touch sub-switch and a second touch sub-switch, and when the touch switch is triggered, the first touch sub-switch and the second touch sub-switch are simultaneously switched on or off. The AND circuit comprises two input ends and an output end, and the first touch sub-switch and the second touch sub-switch are respectively connected with the two input ends. The relay includes relay control portion and relay and is controlled the portion, and relay control portion is connected with the output, and relay control portion can selectively control relay and be controlled the portion disconnection or close. Just can control the relay controlled part to close when first touch-control sub switch switches on with the second touch-control sub switch simultaneously to the condition that makes relay controlled part not controlled by the user and close takes place when can avoiding first touch-control sub switch or second touch-control sub switch to switch on because break down, and then avoids the relay controlled part uncontrolled and injury user's condition.)

1. A switching system, comprising:

the touch control switch comprises a first touch control sub-switch and a second touch control sub-switch, and when the touch control switch is triggered, the first touch control sub-switch and the second touch control sub-switch are simultaneously switched on or off;

the first touch sub-switch and the second touch sub-switch are respectively connected to the two input ends; and

the relay comprises a relay control part and a relay controlled part, the relay control part is connected with the output end, and the relay control part can selectively control the relay controlled part to be opened or closed.

2. The switch system according to claim 1, wherein the touch switch is a capacitive touch switch, the first touch sub-switch includes a first touch electrode, a first control chip and a first circuit board, the first touch electrode is disposed on the first circuit board, and the first control chip is connected to the first touch electrode and one of the input terminals; the second touch sub-switch comprises a second touch electrode, a second control chip and a second circuit board, the second touch electrode is arranged on the second circuit board, and the second touch chip is connected with the second touch electrode and the other input end.

3. The switching system of claim 2, wherein the first circuit board is a unitary structure with the second circuit board.

4. The switch system of claim 2, wherein the first touch electrode and the second touch electrode are both in the shape of an elongated saw-tooth, the first touch electrode and the second touch electrode are arranged in parallel and spaced apart, and the saw-tooth edge of the first touch electrode and the saw-tooth edge of the second touch electrode are engaged with each other.

5. The switch system according to claim 2, further comprising a state detection circuit, wherein the state detection circuit is connected to the output terminal, the first control chip and the second control chip, and the state detection circuit can control the first control chip to output the control signal to the input terminal and/or control the second control chip to output the control signal to the input terminal according to the electrical signal of the output terminal.

6. The switch system of claim 2, wherein the touch switch further comprises an indicator light disposed on the first circuit board or the second circuit board.

7. The switch system according to claim 2, further comprising a safety start switch, wherein the safety start switch comprises a third touch electrode and a third circuit board, the third touch electrode is disposed on the third circuit board and connected to the second control chip, and the third touch electrode and the second touch electrode are simultaneously used for controlling the second control chip to operate.

8. A blender, comprising:

a drive device;

the touch control switch comprises a first touch control sub-switch and a second touch control sub-switch, and when the touch control switch is triggered, the first touch control sub-switch and the second touch control sub-switch are simultaneously switched on or off;

the first touch sub-switch and the second touch sub-switch are respectively connected to the two input ends; and

the relay comprises a relay control part and a relay controlled part, the relay control part is connected with the output end, the relay controlled part is connected with the driving device, and the relay control part can selectively control the relay controlled part to be opened or closed so as to selectively control the driving device to be started or closed.

9. A mixer according to claim 8, wherein the touch switch is a capacitive touch switch, the first touch sub-switch includes a first touch electrode, a first control chip and a first circuit board, the first touch electrode is disposed on the first circuit board, and the first control chip is connected to the first touch electrode and one of the input terminals; the second touch sub-switch comprises a second touch electrode, a second control chip and a second circuit board, the second touch electrode is arranged on the second circuit board, and the second touch chip is connected with the second touch electrode and the other input end.

10. A mixer according to claim 9, wherein the first touch electrode and the second touch electrode are elongated, at least one edge of the first touch electrode is serrated, at least one edge of the second touch electrode is serrated, the first touch electrode and the second touch electrode are spaced apart from each other in parallel, and the serrated edge of the first touch electrode and the serrated edge of the second touch electrode are engaged with each other.

11. The blender of claim 9 further comprising a safety start switch, wherein the safety start switch comprises a third touch electrode and a third circuit board, the third touch electrode is disposed on the third circuit board and connected to the second control chip, and the third touch electrode and the second touch electrode are simultaneously used for controlling the second control chip to operate.

12. The blender of claim 9 wherein the touch switch, the and circuit and the relay control portion form a control loop, the blender further comprising a main power source and a power switch, the main power source, the power switch, the driving device and the relay controlled portion being connected in series to form a main loop, the control loop being capable of selectively controlling the main loop to be on or off.

13. The mixer of claim 12 further comprising a thyristor control circuit and a potentiometer, wherein the thyristor control circuit comprises a thyristor control part and a thyristor controlled part, the thyristor control part is connected with the second control chip, and the potentiometer is connected with the second control chip and controls the thyristor controlled part to operate through the second control chip; the controlled part of the controllable silicon is connected in the main loop and is used for controlling the rotating speed of the driving device.

14. A mixer according to claim 12, wherein the power supply in the main circuit and the power supply in the control circuit are derived from the same input power supply.

Technical Field

The invention relates to the technical field of electronics, in particular to a switch system and a stirrer.

Background

The switch that is used for domestic appliance (for example, mixer, washing machine etc.) now, when the switch broke down, broke down and make the circuit switch on at the switch very much, domestic appliance can uncontrolled start to can appear domestic appliance and hurt human risk, and then lead to domestic appliance not to conform to the safety regulation requirement.

Disclosure of Invention

The embodiment of the invention provides a switch system and a stirrer.

The switching system of the embodiment of the invention comprises:

the touch control switch comprises a first touch control sub-switch and a second touch control sub-switch, and when the touch control switch is triggered, the first touch control sub-switch and the second touch control sub-switch are simultaneously switched on or off;

the first touch sub-switch and the second touch sub-switch are respectively connected to the two input ends; and

the relay comprises a relay control part and a relay controlled part, the relay control part is connected with the output end, and the relay control part can selectively control the relay controlled part to be opened or closed.

In some embodiments, the touch switch is a capacitive touch switch, the first touch sub-switch includes a first touch electrode, a first control chip and a first circuit board, the first touch electrode is disposed on the first circuit board, and the first control chip is connected to the first touch electrode and one of the input terminals; the second touch sub-switch comprises a second touch electrode, a second control chip and a second circuit board, the second touch electrode is arranged on the second circuit board, and the second touch chip is connected with the second touch electrode and the other input end.

In some embodiments, the first circuit board and the second circuit board are of a unitary structure.

In some embodiments, the first touch electrode and the second touch electrode are both in the shape of a long strip and a sawtooth, the first touch electrode and the second touch electrode are arranged in parallel at intervals, and the sawtooth edge of the first touch electrode is engaged with the sawtooth edge of the second touch electrode.

In some embodiments, the switch system further includes a state detection circuit, the state detection circuit is connected to the output terminal, the first control chip and the second control chip, and the state detection circuit can control the first control chip to output the control signal to the input terminal and/or control the second control chip to output the control signal to the input terminal according to the electrical signal of the output terminal.

In some embodiments, the touch switch further includes an indicator light disposed on the first circuit board or the second circuit board.

In some embodiments, the switch system further includes a safety start switch, where the safety start switch includes a third touch electrode and a third circuit board, the third touch electrode is disposed on the third circuit board and connected to the second control chip, and the third touch electrode and the second touch electrode are simultaneously used to control the second control chip to operate.

The stirrer of the embodiment of the invention comprises:

a drive device;

the touch control switch comprises a first touch control sub-switch and a second touch control sub-switch, and when the touch control switch is triggered, the first touch control sub-switch and the second touch control sub-switch are simultaneously switched on or off;

the first touch sub-switch and the second touch sub-switch are respectively connected to the two input ends; and

the relay comprises a relay control part and a relay controlled part, the relay control part is connected with the output end, the relay controlled part is connected with the driving device, and the relay control part can selectively control the relay controlled part to be opened or closed so as to selectively control the driving device to be started or closed.

In some embodiments, the touch switch is a capacitive touch switch, the first touch sub-switch includes a first touch electrode, a first control chip and a first circuit board, the first touch electrode is disposed on the first circuit board, and the first control chip is connected to the first touch electrode and one of the input terminals; the second touch sub-switch comprises a second touch electrode, a second control chip and a second circuit board, the second touch electrode is arranged on the second circuit board, and the second touch chip is connected with the second touch electrode and the other input end.

In some embodiments, the first touch electrode and the second touch electrode are both in a long strip shape, at least one edge of the first touch electrode is in a saw-tooth shape, at least one edge of the second touch electrode is in a saw-tooth shape, the first touch electrode and the second touch electrode are arranged in parallel at intervals, and the saw-tooth edge of the first touch electrode and the saw-tooth edge of the second touch electrode are engaged with each other.

In some embodiments, the blender further includes a safety start switch, the safety start switch includes a third touch electrode and a third circuit board, the third touch electrode is disposed on the third circuit board and connected to the second control chip, and the third touch electrode and the second touch electrode are simultaneously used for controlling the second control chip to work.

In some embodiments, the touch switch, the and gate circuit, and the relay control unit form a control loop, the blender further includes a main power source and a power switch, the main power source, the power switch, the driving device, and the relay controlled unit are connected in series to form a main loop, and the control loop can selectively control the main loop to be turned on or off.

In some embodiments, the mixer further comprises a controlled silicon control loop and a potentiometer, the controlled silicon control loop comprises a controlled silicon control part and a controlled silicon part, the controlled silicon control part is connected with the second control chip, and the potentiometer is connected with the second control chip and controls the controlled silicon part to work through the second control chip; the controlled part of the controllable silicon is connected in the main loop and is used for controlling the rotating speed of the driving device.

The stirrer and the switch system provided by the embodiment of the invention can control the relay controlled part to be closed when the first touch sub switch and the second touch sub switch are simultaneously switched on, so that the condition that the relay controlled part is not controlled by a user to be closed when any one of the first touch sub switch and the second touch sub switch is switched on due to a fault can be avoided, and the condition that the user (human body) is injured when the relay controlled part is not controlled to be closed by the user is further avoided.

Additional aspects and advantages of embodiments 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 embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic circuit diagram of a switching system in accordance with certain embodiments of the present invention.

Fig. 2 is a schematic structural diagram of a touch switch of a switch system according to some embodiments of the present invention.

Fig. 3 is a schematic circuit diagram of a switching system in accordance with certain embodiments of the present invention.

Fig. 4 is a block schematic diagram of a switching system in accordance with certain embodiments of the present invention.

Fig. 5 and 6 are schematic electrical circuit diagrams of blenders according to certain embodiments of the present invention.

Fig. 7 is a schematic diagram of a power supply system of some embodiments of the present invention.

FIG. 8 is a schematic diagram of the electrical circuitry of a blender according to certain embodiments of the present invention.

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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

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 and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 and 4, a switch system 100 according to an embodiment of the present invention includes a touch switch 10, an and circuit 20, and a relay 30. The touch switch 10 includes a first touch sub-switch 11 and a second touch sub-switch 12, and when the touch switch 10 is triggered, the first touch sub-switch 11 and the second touch sub-switch 12 are turned on or off simultaneously. The and circuit 20 includes two input terminals 21 and an output terminal 22, and the first touch sub-switch 11 and the second touch sub-switch 12 are respectively connected to the two input terminals 21. The relay 30 includes a relay controller 31 and a relay controlled unit 32, the relay controller 31 is connected to the output terminal 22, and the relay controller 31 can selectively control the relay controlled unit 32 to be opened or closed.

Specifically, the touch switch 10, the and circuit 20 and the relay control unit 31 together form a control loop 101, wherein the control loop 101 is a low voltage circuit, that is, the maximum voltage in the control loop 101 is less than or equal to 36 volts, for example, the maximum voltage in the control loop 101 is 36 volts, 24 volts, 12 volts, 5 volts. When the first touch sub-switch 11 and the second touch sub-switch 12 are turned on simultaneously, both the input terminals 21 are set to a high level, and the output terminal 22 is also set to a high level, at this time, the control circuit 101 supplies power to the relay control unit 31, and the relay controlled unit 32 is closed under the action of the relay control unit 31. When one of the first touch sub-switch 11 and the second touch sub-switch 12 is turned on due to a fault, only one input terminal 21 of the and circuit 20 is set to a high level, and the other input terminal 21 is set to a low level, so that the output terminal 22 is set to a low level, at this time, the control circuit 101 is in a non-conducting state (that is, the control circuit 101 does not supply power to the relay control unit 31), and the relay controlled unit 32 is kept in a disconnected state under the action of the relay control unit 31.

The touch switch 10 may be a capacitive touch switch (or capacitive touch key), a push button switch, a key switch, or the like.

The switch system 100 according to the embodiment of the invention can control the relay controlled part 32 to be closed when the first touch sub-switch 11 and the second touch sub-switch 12 are simultaneously turned on, so that the situation that the relay controlled part 32 is not controlled by a user to be closed when any one of the first touch sub-switch 11 and the second touch sub-switch 12 is turned on due to a fault can be avoided, and the situation that the user (human body) is injured when the relay controlled part 32 is not controlled by the user to be closed can be avoided.

Referring to fig. 1 and 4, a switch system 100 according to an embodiment of the present invention includes a touch switch 10, an and circuit 20, and a relay 30.

The touch switch 10 includes a first touch sub-switch 11, a second touch sub-switch 12 and an indicator 13.

Referring to fig. 2, the first touch sub-switch 11 is a capacitive touch switch (capacitive touch key or capacitive touch button). The first touch sub-switch 11 includes a first touch electrode 111, a first control chip 112 and a first circuit board 113. The first Circuit board 113 may be a Printed Circuit Board (PCB) or a flexible Circuit board (FPC), and one edge of the first Circuit board 113 is serrated. The first touch electrode 111 is in a shape of a long strip and a sawtooth, the first touch electrode 111 is disposed on one side of the sawtooth of the first circuit board 113, and the sawtooth of the first touch electrode 111 and the sawtooth of the first circuit board 113 are formed. When the user presses the touch position of the first touch sub-switch 11, the finger of the user forms a capacitance with the first touch electrode 111 and triggers the first touch electrode 111. The first control chip 112 may be a detection chip dedicated for a capacitive touch key, the first control chip 112 is capable of detecting whether the first touch electrode 111 is triggered and sending out a control signal (e.g., a high level signal) when the first touch electrode 111 is triggered, and the first control chip 112 is disposed outside the first circuit board 113 and connected to the first touch electrode 111. In other embodiments, the first control chip 112 may also be disposed on the first circuit board 113.

Referring to fig. 2, the second touch sub-switch 12 is a capacitive touch switch. The second touch sub-switch 12 includes a second touch electrode 121, a second control chip 122 and a second circuit board 123. The second circuit board 123 may be a printed circuit board or a flexible circuit board, one edge of the second circuit board 123 is serrated, and the serrated edge of the second circuit board 123 is engaged with the serrated edge of the first circuit board 113. The second touch electrode 121 is in a shape of a long strip and a sawtooth, the second touch electrode 121 is disposed on one side of the sawtooth of the second circuit board 123, and the sawtooth of the second touch electrode 121 corresponds to the sawtooth of the second circuit board 123. The second touch electrode 121 is parallel to the first touch electrode 111 and is disposed at an interval, and the sawtooth-shaped edge of the second touch electrode 121 is engaged with the sawtooth-shaped edge of the first touch electrode 111. The mutual engagement between the sawtooth-shaped edge of the second touch electrode 121 and the sawtooth-shaped edge of the first touch electrode 111 means that: the saw-tooth-shaped protrusions of the second touch electrode 121 extend into the saw-tooth-shaped recesses of the first touch electrode 111, and the saw-tooth-shaped protrusions of the first touch electrode 111 extend into the saw-tooth-shaped recesses of the second touch electrode 121. When the user presses the touch position of the second touch sub-switch 12, the finger of the user forms a capacitance with the second touch electrode 121, and the second touch electrode 121 is triggered. The second control chip 122 may be a detection chip dedicated for a capacitive touch key, the second control chip 122 can detect whether the second touch electrode 121 is triggered and send out a control signal (e.g., a high level signal) when the second touch electrode 121 is triggered, and the second control chip 122 is disposed outside the second circuit board 123 and connected to the first touch electrode 111. In other embodiments, the second control chip 122 may also be disposed on the second circuit board 123. The second circuit board 123 and the first circuit board 113 may also be an integrated structure, that is, the second circuit board 123 and the first circuit board 113 are the same circuit board, so that the first circuit board 113 is conveniently manufactured (at this time, the first circuit board 113 is also the second circuit board 123), and the first touch electrode 111 and the second touch electrode 121 are conveniently manufactured on the first circuit board 113.

Referring to fig. 2, the touch switch 10 is formed with a touch area 15, the first touch electrode 111 and the second touch electrode 121 are both formed in the touch area 15, because the first touch electrode 111 and the second touch electrode 121 are engaged with each other, when a user presses the touch area 15 (or the touch switch 10), the first touch electrode 111 and the second touch electrode 121 are triggered simultaneously, and the first control chip 112 and the second control chip 122 are also triggered by the first touch electrode 111 and the second touch electrode 121, respectively, so as to implement simultaneous on/off of the first touch sub-switch 11 and the second touch sub-switch 12. In some embodiments, the first control chip 112 and the second control chip 122 are also triggered by the first touch electrode 111 and the second touch electrode 121 respectively only when the user continuously presses the touch area 15 (the touch switch 10) for more than a predetermined time, where the predetermined time is greater than or equal to 1 second, for example, the predetermined time may be 1 second, 2 seconds, 3 seconds, 4 seconds, or 5 seconds. Thus, the touch switch 10 can prevent the user from being turned on or off when the user touches the touch area 15 by mistake.

The indicator 13 is disposed on a side of the first circuit board 113 opposite to the first touch electrode 111 and located in the touch area 15; alternatively, the indicator 13 may also be disposed on the opposite side of the second circuit board 123 from the second touch electrode 121 and located in the touch area 15. When the first touch sub-switch 11 and the second touch sub-switch 12 are triggered (turned on or off), the indicator lamp 13 is turned on and emits light. Specifically, the indicator light 13 is further connected to the first control chip 113 and the second control chip 123, when the first touch sub-switch 11 and the second touch sub-switch 12 are triggered, both the first control chip 113 and the second control chip 123 send a control signal to a circuit where the indicator light 13 is located to control the circuit where the indicator light 13 is located to be on, and when any one of the first control chip 113 and the second control chip 123 sends a control signal to a circuit where the indicator light 13 is located, the circuit where the indicator light 13 is located is not on.

The and circuit 20 comprises two input terminals 21 and an output terminal 22. The two input terminals 21 are respectively connected to the first control chip 112 and the second control chip 122.

The relay 30 includes a relay control unit 31 and a relay controlled unit 32, and the relay control unit 31 is connected to the output terminal 22. The relay 30 may be an electromagnetic relay, in which case the relay controller 31 includes a coil, and the relay controller 32 includes a contact and a spring. Of course, the relay 30 may also be a solid state relay, a magnetic reed relay, an optical relay, or the like.

Specifically, the touch switch 10, the and circuit 20 and the relay control unit 31 together form a control loop 101, wherein the control loop 101 is a low voltage circuit, that is, the maximum voltage in the control loop 101 is less than or equal to 36 volts, for example, the maximum voltage in the control loop 101 is 36 volts, 24 volts, 12 volts, 5 volts. When the user presses the touch switch 10, the first touch sub-switch 11 and the second touch sub-switch 12 are turned on at the same time, and the first control chip 112 and the second control chip 122 respectively send control signals to the two input terminals 21, so that both the two input terminals 21 are set to a high level, and the output terminal 22 is also set to a high level. At this time, the control circuit 101 supplies power to the relay controller 31, and closes the relay controlled unit 32 by the controller 31. When any one of the first touch sub-switch 11 and the second touch sub-switch 12 is turned on due to a fault, only one input terminal 21 of the and circuit 20 is set to a high level, and the other input terminal 21 is set to a low level, so that the output terminal 22 is set to a low level, at this time, the control circuit 101 supplies power to the relay control unit 31 to be in a non-conducting state (that is, the control circuit 101 does not supply power to the relay control unit 31), and the relay controlled unit 32 is kept in a disconnected state under the action of the control unit 31. If the output terminal 22 is set to the high level, both the input terminals 21 are set to the high level, and at this time, when the second touch sub-switch 12 is triggered to set one of the input terminals 21 to the low level, the output terminal 22 is also set to the low level.

The switch system 100 according to the embodiment of the invention can control the relay controlled part 32 to be closed when the first touch sub-switch 11 and the second touch sub-switch 12 are simultaneously turned on, so that the situation that the relay controlled part 32 is not controlled by a user to be closed when the first touch sub-switch 11 or the second touch sub-switch 12 is turned on due to a fault (for example, the first control chip 112 is in a fault) can be avoided, and the situation that the relay controlled part 32 injures the user (human body) when the relay controlled part 32 is not controlled to be closed by the user can be further avoided.

In other embodiments, the switch system 100 further includes a state detection circuit (not shown) connected to the output terminal 22, the first control chip 112 and the second control chip 122. The state detection circuit can control the first control chip 112 to output a control signal to the input terminal 21 and/or control the second control chip 122 to output a control signal to the input terminal 21 according to the electrical signal (high level signal or low level signal) of the output terminal 22. The state detection circuit is connected to the relay 30 (relay control unit 31) and can detect the operating state (on or off) of the relay 30; alternatively, the state detection circuit is connected to the output terminal 22 and can detect an electric signal (high level signal or low level signal) of the output terminal 22. The state detection circuit is also connected to the relay 30 (the relay control unit 31 or the output terminal 22) and can detect the operating state (on or off) of the relay 30; alternatively, the state detection circuit is connected to the output terminal 22 and can detect an electric signal (high level signal or low level signal) of the output terminal 22. If the output terminal 22 is set to the high level, both the input terminals 21 are set to the high level, at this time, when the second touch sub-switch 12 is triggered to set one of the input terminals 21 to the low level, the output terminal 22 is also set to the low level and turns off the relay 30, and the state detection circuit controls the first control chip 112 to output the control signal to the other input terminal 21 according to the off state of the relay 30 (or the low level signal of the output terminal 22) so as to set the other input terminal 21 to the low level. If the output terminal 22 is set to the high level, both the input terminals 21 are set to the high level, at this time, when the first touch sub-switch 11 is triggered to set one of the input terminals 21 to the low level, the output terminal 22 is also set to the low level and turns off the relay 30, and the state detection circuit controls the second control chip 122 to output the control signal to the other input terminal 21 according to the off state of the relay 30 (or the low level signal of the output terminal 22) so as to set the other input terminal 21 to the low level.

Referring to fig. 3 and 4, in some embodiments, the switch system 100 further includes a safety start switch 14, the safety start switch 14 includes a third touch electrode 141 and a third circuit board 142, and the third touch electrode 141 is disposed on the third circuit board 142 and connected to the second control chip 122. The third touch electrode 141 and the second touch electrode 121 are used for controlling the control chip to work. When the user presses the touch switch 10 and the safety start switch 14 at the same time, the first touch electrode 111, the second touch electrode 121, and the third touch electrode 141 are triggered at the same time, the first control chip 112 is triggered by the first touch electrode 111 and sets one input terminal 21 to a high level, the second control chip 122 is triggered by the second touch electrode 121 and the third touch electrode 141 and sets the other input terminal 21 to a high level, and the output terminal 22 is also set to a high level. At this time, the control circuit 101 supplies power to the relay controller 31, and closes the relay controlled unit 32 by the controller 31. When the user presses only the touch switch 10, only the second touch electrode 121 is triggered, the second control chip 122 is not triggered by the second touch electrode 121, and the second control chip 122 does not set the input end 21 to the high level; when the user only presses the safety start switch 14, only the third touch electrode 141 is triggered, the second control chip 122 is not triggered by the third touch electrode 141, and the second control chip 122 does not set the input terminal 21 to the high level. In this way, the switch system 100 of the present embodiment can further prevent the relay controlled part 32 from being closed when the user touches the touch switch 10 or the safety starter switch 14 by mistake.

In other embodiments, when the time for the user to continuously press the touch switch 10 and the safety start switch 14 is longer than a preset time, the first control chip 112 is triggered by the first touch electrode 111, and the second control chip 122 is triggered by the second touch electrode 121 and the third touch electrode 141, where the preset time is greater than or equal to 1 second, for example, the preset time may be 1 second, 2 seconds, 3 seconds, 4 seconds, or 5 seconds. In this way, the switching system 100 can prevent the relay controlled part 32 from being closed when the user accidentally touches the touch switch 10 and the safety start switch 14.

Referring to fig. 5, 7 and 8, a blender 200 according to an embodiment of the present invention includes the switch system 100, the driving device 40, the main power source 50, the power switch 60, the scr control circuit 70 and the potentiometer 80 according to the above embodiment. Blender 200 may be a hand-held blender.

The drive means 40 comprises a motor.

The main power supply 50, the power switch 60, the driving device 40, and the relay controlled part 32 are connected in series to form a main circuit 201. The main circuit 201 is a high voltage circuit, that is, the maximum voltage in the main circuit 201 is greater than 36 volts, for example, the maximum voltage of the main circuit 201 may be 110 volts ac, 120 volts ac, 220 volts ac, 230 volts ac, 330 volts ac, and preferably, the power source in the main circuit 201 is 220 volts ac for household use.

The potentiometer 80 is connected to the second control chip 122 and is used for controlling the second control chip 122 to operate.

The thyristor control circuit 70 includes a thyristor control section 71 and a thyristor controlled section 72. The thyristor control circuit 70 includes a Silicon Controlled Rectifier (SCR), the thyristor control portion 71 may include a control electrode of the SCR, and the thyristor Controlled portion 72 may include a cathode and an anode of the SCR. The thyristor control unit 71 is connected to the second control chip 122, the thyristor controlled unit 72 is connected to the main circuit 201, and the thyristor controlled unit 72 controls the rotational speed of the drive device 40. The potentiometer 80 is used for controlling the second control chip 122 to send a control signal to the thyristor control part 71 to adjust the conduction angle of the thyristor, so that the controlled thyristor 72 can adjust the rotation speed of the driving device 40. In other embodiments, the second control chip 122 is further connected to other control circuits, and the control circuit controls the second control chip 122 to control the rotation speed of the driving device 40 through the controlled thyristor 72.

Referring to fig. 6, when the user closes the power switch 60, if the user presses the touch switch 10 (when the switch system 100 includes the safety start switch 14, the user presses both the touch switch 10 and the safety start switch 14), the control circuit 101 is turned on to close the relay controlled part 32, and the relay controlled part 32 is closed to turn on the main circuit 201, so that the driving device 40 operates.

The blender 200 according to the embodiment of the present invention can control the relay controlled part 32 to be closed to control the driving device 40 to operate when the first touch sub switch 11 and the second touch sub switch 12 are simultaneously turned on, so as to prevent the relay controlled part 32 from being closed without being controlled by the user when the first touch sub switch 11 or the second touch sub switch 12 is turned on due to a failure, and further prevent the driving device 40 from being started without being controlled by the user and injuring the user.

In some embodiments, the power supply in the main loop 201 (i.e., the main power supply 50) and the power supply of the control loop 101 are derived from the same input power supply (not shown). In this case, the input power is an ac power, and the voltage of the input power may be 220 volts. The input power source can be connected to a transformer circuit (the transformer circuit includes a transformer), the input power source outputs a voltage corresponding to the main power source 50 under the transformation (voltage regulation) of the transformer circuit to supply power to the main circuit 201, and the voltage input by the transformer circuit is the voltage of the main power source 50. The input power supply can also be connected to a rectifying circuit (the rectifying circuit includes a rectifier), and the input power supply outputs the voltage for supplying power to the control loop 101 under the action of the rectifying circuit.

In the description of the specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like means 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, schematic representations of the above terms do not 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, 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 at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.