CN108042070B - Control system for child lock for sink dishwasher - Google Patents

Abstract

The invention discloses a child lock control system for a sink dishwasher, which comprises a sink, a movable cover plate is arranged on the sink, and an electric control lock is arranged between the cover plate and the sink. A processor and a plurality of key switches are integrated on the cover plate, and the switch signals between at least two key switches are correlated to form a control command, and the control command includes a locking command. When the electric control lock is in the unlocked state, if any Two or more key switches trigger the switch signal at the same time, then the processor controls the electric control lock to switch to the locked state; the unlock command, when the electric control lock is in the locked state, the two key switches are designated as specific key switches, and the two specific key switches are designated as specific key switches. There is a distance of more than 80mm between the key switches. If the switching signals of two specific key switches are triggered at the same time, the processor controls the electric lock to switch to the unlocked state. The invention provides a child lock control system for a sink dishwasher, which is not easy to be unlocked by children and has simple and convenient operation.

Description

Control system for child lock for sink dishwasher

technical field

The invention relates to the technical field of sink dishwashers, in particular to a child lock control system for sink dishwashers.

Background technique

The sink dishwasher is a new type of kitchen appliance produced with the development of household appliances. Since the sink dishwasher is often accompanied by hot water washing, hot air drying, infrared sterilization, etc. during use, the sink dishwashing How to prevent children from accidentally touching the machine during use and causing safety problems is particularly important. Therefore, existing sink dishwashers generally use the child locks of traditional appliances for reference, that is, opening the child lock makes the door cover locked during the operation of the appliance, and resets the door cover to be opened normally when the appliance is running.

But the child lock of this prior art still has the following problems: the first, the frequency of use of the sink dishwasher is high, therefore, all will set and open the child lock before using each time, bring inconvenience to the user, the second, even if The child lock button is set, and there is also a situation where children touch the switch button of the child lock and cause the child lock to fail, so the security is insufficient.

Contents of the invention

The technical problem to be solved by the present invention is to provide a child lock control system for a sink dishwasher, which is not easy to be unlocked by children and is easy and convenient to operate.

The technical solution adopted by the present invention is to provide a child lock control system for a sink dishwasher, including a sink, a movable cover is provided on the sink, and a The electric control lock, the processor and a plurality of key switches are integrated on the cover plate, the key switches are connected to the signal of the electric control lock through the processor, and the switching signals between at least two key switches are related to each other to form a key for controlling the electric control lock. The control command for opening and closing the lock is characterized in that: the control command includes:

Locking command, when the electric control lock is in the unlocked state, if any two or more key switches trigger the switch signal at the same time, the processor controls the electric control lock to switch to the locked state;

Unlock command, when the electric control lock is in the locked state, mark the two key switches as specific key switches, and leave a distance of more than 80mm between the two specific key switches. If the switch signals of the two specific key switches are triggered at the same time, the processor will Control the electric control lock to switch to the unlocked state. Since children's hands are small, setting two key switches with a large distance between them is usually triggered as an unlocking condition, so that the user can use the unlocking normally, but children cannot unlock it, so the security is high.

A first sensor for detecting that the cover is opened or closed on the sink is provided between the sink and the cover. If the cover is in the open state, the electric control lock will fail. If the cover is switched from the open state When it reaches the closed state, the electric control lock resets to the unlocked state. By arranging the first sensor, the state of the cover can be detected, at least preventing the electric control lock from being opened when the cover is in an open state. Of course, the detection signal of the first sensor can also make the drive motor automatically shut down when the cover plate is accidentally opened, so as to protect the cover from opening.

The control system also includes a first timer. In the unlock command, if the switch signals of two specific key switches are triggered simultaneously, the first timer starts counting, and if the switch signal of any specific key switch is lost, the first timer The timer is cleared, and when the cumulative time of the first timer reaches the set time value, the electronically controlled lock switches to the unlocked state. By setting the first timer, there is an error correction time after the user accidentally touches two specific key switches to issue an unlock command, so that the child lock will not fail due to accidental operation, and the safety of the child lock system will be improved.

The distance between two specific key switches in the unlocking instruction is equal to 100mm.

In the unlocking command, if the time interval between the simultaneous triggering of two specific key switches is less than 0.2s, the processor controls the electric control lock to receive the command so as to switch to the unlocked state, otherwise the processor ignores the unlocking command. By judging the time interval between the triggering of two specific key switches to determine whether the triggering of two specific key switches is completed by the same hand, if it is completed by two hands, the synchronization is insufficient, and this time interval cannot be made less than 0.2 seconds. In this way, the situation that an older child triggers two specific key switches with two hands to issue an unlocking command is avoided, and the safety of the child lock system is improved.

The control system also includes a speed sensor for detecting the start and stop of the drive motor and a second sensor that can be installed separately. There is a detection blind zone for children's activities between the detection area of the second sensor and the ground. When the lock is in the locked state, if the speed signal of the speed sensor is zero and the second sensor sends out a detection signal, the electronically controlled lock automatically switches to the unlocked state. The speed sensor can be used to monitor in real time whether the driving motor is in a working state, so as to prevent the cover from opening when the driving motor is working.

The control system also includes a second timer and a signal buffer. When the driving motor stops so that the speed signal of the speed sensor drops to zero, the second timer starts counting. The second timer is cleared and an automatic unlock signal is sent to the signal buffer at the time of time. If the signal buffer receives the detection signal of the second sensor and the automatic unlock signal sent by the second timer at the same time, the electronically controlled lock automatically switches to the unlocked state . The detection signal of the second sensor and the unlocking signal sent by the second timer can delay the automatic unlocking of the sink dishwasher after completing the dishwashing function, thereby avoiding the need for manual unlocking after each dishwashing. At the same time, due to the second sensor set, it will only be automatically unlocked when the operator is present and close, so the safety is high.

After adopting the above structure, the control system of the child lock for the sink dishwasher of the present invention has the following advantages compared with the prior art: First, the condition required for unlocking the cover plate is that two key switches with far distances are touched at the same time, Therefore, only adults can complete it, and children's palms are too small to achieve the effect of child lock. Secondly, the processor judges the time interval between the triggering of two specific key switches, thereby judging whether it is completed by a single hand, thus avoiding The child unlocks with two hands, so the security is higher. Finally, by setting the second sensor, the user will automatically unlock when approaching. The child is not tall enough, so the second sensor will not be touched, and the security is further improved. In addition, the detection signal of the second sensor can be used to complete automatic unlocking or locking, reducing the inconvenience of operation caused by frequent manual unlocking by the user.

Description of drawings

Fig. 1 is a structural schematic diagram of a control system of a child lock for a sink dishwasher according to the present invention.

Fig. 2 is a schematic top view of the control system of the child lock for the sink dishwasher of the present invention.

Fig. 3 is a structural schematic diagram of the electric control lock in the present invention.

Fig. 4 is an assembly diagram of the present invention installed in a kitchen.

Among them, 1. Sink, 2. Cover plate, 3. Electric lock, 4. Key switch, 5. Processor, 6. First sensor, 7. First timer, 8. Speed sensor, 9. Second Two sensors, 9.1, detection area, 9.2, detection blind area, 10, drive motor, 11, second timer, 12, signal buffer.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The invention provides a child lock control system for a sink dishwasher, which includes a sink 1, a movable cover 2 is provided on the sink 1, and an electric control device is provided between the cover 2 and the sink 1. Lock 3, the electric control lock 3 makes the lock or loose between the cover plate 2 and the sink 1, the cover plate 2 is integrated with a processor 5 and a plurality of key switches 4, and the key switches 4 are processed The device 5 is connected with the electric control lock 3 signal, and the switch signals between at least two key switches 4 are correlated to form a control instruction for controlling the opening and closing of the electric control lock 3 . The above-mentioned processor 5 can be integrated in the central control system of the sink dishwasher itself as a system module. The above-mentioned key switch 4 is a touch-screen switch on the cover plate 2 of the sink dishwasher itself, that is, multiple touch-screen switches such as water temperature adjustment, water volume adjustment, mode switching, and timing.

Embodiment one:

The control instructions include a locking instruction and an unlocking instruction. Wherein, when the electronically controlled lock 3 is in the unlocked state, if any two or more than two key switches 4 simultaneously trigger the switch signal, the processor 5 receives the two switch signals to generate a locking command, and the locking command controls the electronically controlled lock 3 Switch to the locked state. Wherein, when the electric control lock 3 is in the locked state, the processor calibrates the two key switches 4 as specific key switches, and there is a distance greater than 80 mm between the two specific key switches. If the switch signals of the two specific key switches are triggered simultaneously Then the processor receives the two switch signals to generate an unlocking command, and the unlocking command controls the electronically controlled lock 3 to switch to the unlocked state.

Further, when the electric control lock 3 is in the locked state, the processor 5 marks the two key switches 4 as specific key switches, and the processor 5 may pre-mark all the key switches 4 when the electric control lock 3 is in the locked state. The two are specific key switches, and it can also be that if the processor 5 receives the switch signals of the two key switches 4, if the electric control lock 3 is in the locked state and the distance between the two key switches 4 that send the switch signal is greater than 80mm, then the processor automatically calibrates the two key switches 4 that send switch signals at this time as specific key switches. That is, when the electric control lock 3 is in the locked state, any two key switches 4 with a distance greater than 80 mm can be used as specific key switches. The term "specific key switch" above does not mean that the structure of the key switch 4 is special, but that when the processor 5 processes the switch signal, the processor 5 performs data marking on the switch signal that satisfies the conditions.

Preferably, the distance between two specific key switches in the unlocking instruction is equal to 100mm.

Embodiment two:

A first sensor 6 is provided between the sink 1 and the cover 2, and the first sensor 6 is electrically connected to the processor 5 for detecting that the cover 2 is opened or closed on the sink 1, The first sensor 6 can be installed on the sink 1 or the cover 2 or between the two. If the cover 2 is in the open state, the electric control lock 3 will be invalid. If the cover 2 is switched from the open state to the closed state, then the electric control lock 3 is reset to the unlocked state. The priority of the detection signal sent by the above-mentioned first sensor 6 when detecting that the cover 2 is in the open state is higher than that of the control command, that is, when the cover 2 is in the open state, the control command is invalid, and the electric control lock 3 Power-off failure, thereby avoiding the cover 2 being quickly closed by the suction force of the electric control lock 3 in the open state, causing the cover 2 to be damaged or people to be pinched.

Embodiment three:

The basic structure of the present embodiment is consistent with the above-mentioned control system, the difference is that it also includes a first timer 7, and the first timer 7 is electrically connected with the processor 5 and the key switch 4, and if two The switch signal of specific key switch triggers simultaneously then processor 5 controls first timer 7 to start counting, if the switch signal of any specific key switch loses then first timer 7 is cleared, when first timer 7 accumulative time reaches setting When the time value is set, the electric control lock 3 is switched to the unlocked state. The aforementioned clearing of the first timer 7 means that the first timer 7 is reset to an initial state.

The above-mentioned setting time can be set before leaving the factory according to different occasions, or can be customized by maintenance personnel or users. The set time may be any time value ranging from 1 second to 5 seconds. The first timer 7 can prevent the electric control lock 3 from being unlocked due to a user's mistaken touch, especially for older children who accidentally touch the switch signals of two specific key switches. Thus, even if the user or child accidentally touches two specific key switches, the electric control lock 3 will not be immediately unlocked.

Embodiment four:

The basic mechanism of this embodiment is consistent with the above-mentioned control system, the difference is that in the unlocking command, if the time interval between two specific key switches being triggered simultaneously is less than 0.2s, the processor 5 controls the electric control lock 3 to receive the command so as to switch to the unlocked state , otherwise the processor 5 ignores the unlock instruction. By judging whether the two specific key switches are pressed synchronously, it is judged whether the triggering of the two specific key switches is the simultaneous pressing of two fingers of the same hand. If an adult’s two fingers of one hand touch the specific key at the same time When switching on and off, the time interval between two specific key switches will be less than 0.2s. If two hands touch the specific key switches at the same time, this time interval will often be greater than 0.2s. As a result, it is avoided that when an older child touches the display screen on the cover plate 2 with two hands, he or she accidentally touches two specific key switches, resulting in the failure of unlocking the electronically controlled lock 3 .

Embodiment five:

The basic mechanism of this embodiment is consistent with the above-mentioned control system, the difference is that it also includes a speed sensor 8 for detecting the start and stop of the drive motor 10 and a second sensor 9 that can be installed separately, and the speed sensor 8 and the second sensor 9 are both It is electrically connected with the processor 5, and there is a detection blind zone 9.2 for children's activities between the detection area 9.1 of the second sensor 9 and the ground. When the electric control lock 3 is in the locked state, if the speed signal of the speed sensor 8 is zero value and the second sensor 9 sends a detection signal, then the electric control lock 3 automatically switches to the unlocked state. The functions of the above-mentioned speed sensor 8 include at least two points: first, when the sink dishwasher finishes washing dishes, it can automatically unlock the electric control lock 3, avoiding the trouble of manually unlocking the electric control lock 3 every time the user locks it. Second, the speed signal passed through the speed sensor 8 during the normal operation of the drive motor 10 makes the processor 5 control the electric control lock 3 to be in the locked state all the time, even if the user makes a misoperation and touches two specific key switches through the speed sensor 8. The speed signal of 8 can also prevent the processor 5 from issuing an unlock command, that is, the speed signal of the speed sensor 8 has a higher priority than the switch signal of a specific key switch.

Further, the detection area 9.1 of the above-mentioned second sensor 9 is a range value, that is, when an object moves within the detection area 9.1 or the displacement of the movement reaches the trigger value, the second sensor 9 will give a control signal, thus The electric control lock 3 can be unlocked automatically when a person approaches through the second sensor 9, and the electric control lock 3 can be automatically locked when the person leaves. Certainly, the second sensor 9 can be used in conjunction with the speed sensor 8, that is, when the detection value of the speed sensor 8 is zero, the personnel approach the second sensor 9 and then the processor 5 controls the electronic control lock 3 to automatically unlock, if the detection of the speed sensor 8 When the value is non-zero, the processor 5 controls the electronically controlled lock 3 to automatically lock when the person leaves the detection area 9.1 of the second sensor 9 . Thus, automatic locking or unlocking of the electric control lock 3 can be realized.

Further, the height of the blind detection zone 9.2 along the vertical direction is greater than 1 meter. Setting a detection blind area 9.2 with a height of 1 meter can prevent children from touching the detection area 9.1 of the second sensor 9 during walking.

Preferably, if the dishwashing tank 1 is also provided with a high temperature sensor, a current sensor for starting and stopping the ultraviolet rays, a current sensor for whether the ultrasonic wave is energized or not, etc. Realize the function similar to speed sensor by above-mentioned sensor, namely prevent cover plate 2 from opening when the inner functional module of dishwashing tank is still working, even if forced to open, also can shut down each functional module at once by processor 5, avoids damage to cause injury to personnel.

Embodiment six:

The control system also includes a second timer 11 and a signal buffer 12. When the driving motor 10 stops so that the speed signal of the speed sensor 8 drops to zero, the second timer 11 starts counting. When the counter 11 reaches the set time, the second timer 11 is cleared and sends an automatic unlock signal to the signal buffer 12. If the signal buffer 12 receives the detection signal of the second sensor 9 and the automatic unlock signal sent by the second timer 11 at the same time Unlocking signal then electric control lock 3 switches to unlocking state automatically. The aforementioned clearing of the second timer 11 means that the second timer 11 is reset to an initial state.

The above-mentioned setting time is used to make the sink 1 leave enough time for the natural cooling of the sink 1 after the dishwashing function is completed, that is, when the drive motor 10 of the sink 1 stops, the second timer 11 Accumulated time, an automatic unlocking signal is given when the natural cooling is completed, and stored in the signal buffer 12, when a person approaches so that the second sensor 9 gives a detection signal so that the detection signal is sent to the signal buffer 12 , the processor 5 issues an unlocking command only when the automatic unlocking signal of the second timer 11 and the detection signal of the second sensor 9 are stored in the signal buffer 12 .

Preferably, the set time value of the second timer 11 is 2 minutes to 10 minutes.

Embodiment seven:

The basic mechanism of this embodiment is consistent with the structure in the first embodiment above, the difference is that the electric control lock 3 is an electric control magnetic lock, the part of the magnetic lock is fixed on the sink 1, and the part of the magnetic lock is fixed Installed on the cover plate 2, the two parts of the magnetic lock can be attracted or disengaged by turning on and off the electricity. Or the electric control lock 3 is arranged on the rotating shaft of the dishwashing tank 1 and the cover plate 2, and the locking of the cover plate 2 is realized by restricting the rotating shaft by the electric control lock 3 .

A control method based on the above-mentioned child lock control system for sink dishwashers, including the second sensor 9 installed on the cabinet 13, and embedded in the sink 1 on the kitchen countertop, characterized in that: the control method includes The following steps:

a. Cover the cover plate 2, and turn on the driving motor 10 of the sink dishwasher;

b. Simultaneously press at least two arbitrary key switches 4 on the cover plate 2, so that the electric control lock 3 locks the cover plate 2;

c. After the drive motor 10 stops, press two specific key switches at the same time until the electric control lock 3 is unlocked.

In addition, the above-mentioned first sensor 6 , first timer 7 , second sensor 9 , second timer 1 , speed sensor 8 and signal buffer 12 are all electrically connected to the processor 5 .

The preferred embodiments of the present invention have been described above, but should not be construed as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change, and all the various changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims (6)

1. a kind of control system of water basin dish-washing machine child lock, it includes scullery basin (1), and scullery basin (1) is equipped with movable Cover board (2), be equipped with electric control lock (3) between cover board (2) and scullery basin (1), be integrated with processor (5) on the cover board (2) With multiple key switches (4), key switch (4) is connect by processor (5) with electric control lock (3) signal, and at least two keys are opened Close the interrelated control instruction constituted for controlling electric control lock (3) opening and closing of the switching signal between (4), it is characterised in that: institute The control instruction stated includes:

Locking instruction, when electric control lock (3) if any two or more than two key switch (4) trigger simultaneously when in the unlocked state Then processor (5) control electric control lock (3) switches to locking state to switching signal；

Unlock instruction, when electric control lock (3) is in locking state, two key switches (4) of calibration are that specific keys switch, two There are the spacing for being greater than 80mm between specific keys switch, handle if the switching signal of two specific keys switch triggers simultaneously Device (5) control electric control lock (3) switches to unlocked state；

Processor (5) control is electric if the time interval of two specific keys switches while triggering is less than 0.2s in unlock instruction Control lock (3) receives instruction so that switching to unlocked state, and otherwise the processor (5) ignores unlock instruction.

2. the control system of water basin dish-washing machine child lock according to claim 1, it is characterised in that: the scullery basin (1) first sensor (6) opened or be covered on scullery basin (1) for detecting cover board (2) is equipped between cover board (2), if Cover board (2) then electric control lock (3) failure in the open state, the electric control lock if cover board (2) switches to lid conjunction state from opening state (3) it is reset to unlocked state.

3. the control system of water basin dish-washing machine child lock according to claim 1, it is characterised in that: the control system System further includes the first timer (7), in the unlock instruction if the switching signal of two specific keys switch triggers simultaneously First timer (7) starts timing, and the first timer (7) is reset if the switching signal of any specific keys switch is lost, when Electric control lock (3) switches to unlocked state when first timer (7) cumulative time reaches setting time value.

4. the control system of water basin dish-washing machine child lock according to claim 1, it is characterised in that: the unlock instruction In two specific keys switch between spacing be equal to 100mm.

5. the control system of water basin dish-washing machine child lock according to claim 1, it is characterised in that: the control system System further includes the second sensor (9) for detecting the velocity sensor (8) of driving motor (10) start and stop and can be individually attached, institute State between the detection zone (9.1) of second sensor (9) and ground that there are the check frequencies (9.2) for children's activity, when automatically controlled (3) are locked if the speed signal of velocity sensor (8) is zero when being in locking state and second sensor (9) issues detection signal Then electric control lock (3) automatically switches to unlocked state.

6. the control system of water basin dish-washing machine child lock according to claim 5, it is characterised in that: the control system System further includes the second timer (11) and signal buffer (12), when driving motor (10) are shut down so that velocity sensor (8) Speed signal when being reduced to zero described in the second timer (11) start timing, when the second timer (11) has reached setting Between when the second timer (11) reset and issue automatic unlocking signal to signal buffer (12), if signal buffer (12) is simultaneously Receive second sensor (9) detection signal and the second timer (11) issue automatic unlocking signal then electric control lock (3) from It is dynamic to switch to unlocked state.