CN214059842U - Device for automatically stopping can opening of can opener - Google Patents
Device for automatically stopping can opening of can opener Download PDFInfo
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- CN214059842U CN214059842U CN202023059534.1U CN202023059534U CN214059842U CN 214059842 U CN214059842 U CN 214059842U CN 202023059534 U CN202023059534 U CN 202023059534U CN 214059842 U CN214059842 U CN 214059842U
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Abstract
The utility model discloses an including control module, photoelectric circuit breaker, grating wheel, power module, bearing drive module and can opener blade that has the bearing. The control module is electrically connected with the power supply module, the bearing driving module and the photoelectric circuit breaker respectively. The power supply module is simultaneously electrically connected with the bearing driving module and the photoelectric circuit breaker, the grating wheel is sleeved on the bearing, the movement track of the grating wheel passes through the photoelectric detection area of the photoelectric circuit breaker, and the bearing is fixedly connected with the can opener blade. The bearing drives the grating wheel to rotate, and the control module is used for measuring and calculating the change of the rotation frequency of the bearing in the tank opening process. The control module is used by matching the photoelectric breaker with the grating wheel to measure and calculate the rotation frequency change of the bearing in the can opener can opening process so as to judge whether repeated cutting is generated. When the can opener blade is repeatedly cut, the rotation of the blade is stopped in time, and the problem caused by repeated cutting is avoided.
Description
Technical Field
The utility model relates to an electronic product designs technical field, in particular to can opener automatic stop device of opening jar.
Background
In the prior art, the electric can opener is divided into 2 types, one type is a top cutting function, and the other type is a side cutting function.
The top-cut can opener has the characteristics that a blade of the can opener is required to pierce through a can and be inserted into the can to directly contact with food in the can, and the opening of the cut can is relatively sharp; after the motor drives the can opener blade to rotate for a circle, the can cover is separated from the can body, the cover and the can opener blade are flicked together for resetting, the motor power supply of the can opener is driven to be cut off by the mechanical switch, and the can opener can be automatically stopped.
The side-cutting can opener has the characteristics that the blade of the can opener cuts the sealing edge of the can from the side edge or the sealing edge of the can does not contact the food inside, and the cut can has a smooth opening; however, after the motor rotates for a circle, because no transmission mechanism can drive the motor switch to automatically spring open, the side-cutting can opener motor cannot automatically stop, and if no user stops in time, the repeated side cutting is easy to generate sharp scrap irons and burr burrs.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a device that can opener automatic stop opened can for the side can opener avoids because of the problem that repeated cutting caused when accomplishing the jar of opening.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a device for automatically stopping can opening of a can opener comprises a control module, a photoelectric circuit breaker, a grating wheel, a power supply module, a bearing driving module with a bearing and a can opener blade;
the control module is respectively and electrically connected with a power supply module, the bearing driving module and the photoelectric circuit breaker, the power supply module is simultaneously and electrically connected with the bearing driving module and the photoelectric circuit breaker, the grating wheel is sleeved on the bearing, the motion track of the grating wheel passes through the photoelectric detection area of the photoelectric circuit breaker, and the bearing is fixedly connected with the can opener blade;
the bearing drives the grating wheel to rotate, and the control module is used for measuring and calculating the change of the rotation frequency of the bearing in the tank opening process.
Further, the control module comprises a main control chip and a first capacitor;
one end of the first capacitor is connected with the power supply voltage input pin of the main control chip and the power supply end of the power supply module, and the other end of the first capacitor is connected with the grounding pin of the main control chip.
Further, the circuit also comprises a first resistor, a second resistor and a second capacitor;
one end of the first resistor is connected with a first serial input/output port of the main control chip, the other end of the first resistor is connected with a positive pin of a light emitting diode of the photoelectric circuit breaker, and one end of the second capacitor is simultaneously connected with a collector pin of a photoelectric triode of the photoelectric circuit breaker, one end of the second resistor and a second serial input/output port of the main control chip;
the other end of the second resistor is connected with the power supply end of the power supply module, and the other end of the second capacitor, the negative pin of the light emitting diode of the photoelectric circuit breaker and the emitter pin of the photoelectric triode are all grounded.
Further, the bearing driving module comprises a driving motor, a driving gear, a first triode, a controllable silicon, a third resistor and a fourth resistor;
one end of the third resistor is connected with a third serial input/output port of the main control chip, the other end of the third resistor is connected with a base electrode of the first triode, one end of the fourth resistor is connected with a collector electrode of the first triode, the other end of the fourth resistor is connected with a power control electrode of the controlled silicon, a positive electrode of the controlled silicon is connected with a negative electrode of the driving motor, and a positive electrode of the driving motor is connected with a power supply end of the power supply module;
the emitting electrode of the first triode and the negative electrode of the controlled silicon are grounded, the bearing is assembled on the driving motor, one end of the driving gear is sleeved on the bearing, the other end of the driving gear is fixedly connected with the blade of the can opener, and the first triode is of an NPN type.
Further, the electric vehicle further comprises a key switch, a second triode, a fourth resistor and a fifth resistor, wherein the positive electrode of the driving motor is connected with the power supply end of the power supply module and replaced by the following components:
one end of the key switch is connected with the power supply end of the power supply module, and the other end of the key switch is connected with the positive electrode of the driving motor and one end of the fourth resistor; the other end of the fourth resistor is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with the base electrode of the second triode, and the collector electrode of the second triode is connected with a fourth serial input/output port of the main control chip;
and an emitting electrode of the second triode is grounded, and the second triode is of an NPN type.
To sum up, the beneficial effects of the utility model reside in that: the control module measures and calculates the rotation frequency change of a bearing in the can opener can opening process to judge whether repeated cutting is generated or not through the cooperation of the photoelectric breaker and the grating wheel. When the can opener blade is repeatedly cut, the rotation of the blade is stopped in time, and the problem caused by repeated cutting is avoided.
Drawings
Fig. 1 is a schematic overall structural diagram of an automatic can opener stop opening device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a control module of an apparatus for automatically stopping can opening by a can opener according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a photo interrupter and its peripheral circuit of an apparatus for automatically stopping can opener according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a bearing driving module of an apparatus for automatically stopping can opening by a can opener according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a key switch module of an apparatus for automatically stopping can opening by a can opener according to an embodiment of the present invention;
FIG. 6 is a product structure diagram of an apparatus for automatically stopping the opening of a can opener according to an embodiment of the present invention;
fig. 7 is an exploded view of a product structure of a device for automatically stopping the opening of a can opener according to an embodiment of the present invention;
description of reference numerals:
1. a control module; 2. a photo interrupter; 3. a grating wheel; 4. a power supply module; 5. a bearing drive module; 6. a bearing; 7. a drive motor; 8. a drive gear assembly; 9. a key switch module;
c1, a first capacitance; c2, a second capacitor;
q1, the first triode; q2, silicon controlled rectifier; q3, the second triode;
r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; r5, fifth resistor;
s1, a key switch;
u1, main control chip.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 7, a device for automatically stopping can opening of a can opener includes a control module 1, a photo interrupter 2, a grating wheel 3, a power supply module 4, a bearing driving module 5 with a bearing 6, and a can opener blade;
the control module 1 is electrically connected with a power supply module 4, the bearing driving module 5 and the photoelectric circuit breaker 2 respectively; the power supply module 4 is simultaneously electrically connected with the bearing driving module 5 and the photoelectric circuit breaker 2, the grating wheel 3 is sleeved on the bearing 6, the movement track of the grating wheel 3 passes through the photoelectric detection area of the photoelectric circuit breaker 2, and the bearing 6 is fixedly connected with the can opener blade;
the bearing 6 drives the grating wheel 3 to rotate, and the control module 1 is used for measuring and calculating the change of the rotation frequency of the bearing 6 in the tank opening process.
From the above description, the beneficial effects of the present invention are: the control module 1 measures and calculates the rotation frequency change of a bearing 6 in the can opener can opening process to judge whether repeated cutting is generated or not through the cooperation of the photoelectric breaker 2 and the grating wheel 3. When the can opener blade is repeatedly cut, the rotation of the blade is stopped in time, and the problem caused by repeated cutting is avoided.
Further, the control module 1 comprises a main control chip U1 and a first capacitor C1;
one end of the first capacitor C1 is connected to the power supply voltage input pin of the main control chip U1 and the power supply terminal of the power supply module 4, and the other end is connected to the ground pin of the main control chip U1.
As can be seen from the above description, the main control chip U1 and the peripheral circuits thereof on the control module 1 are described above. The first capacitor C1 performs a filtering function.
Further, the circuit also comprises a first resistor R1, a second resistor R2 and a second capacitor C2;
one end of the first resistor R1 is connected to the first serial input/output port of the main control chip U1, and the other end of the first resistor R1 is connected to the positive electrode pin of the light emitting diode of the photo interrupter 2, and one end of the second capacitor C2 is connected to the collector pin of the photo transistor of the photo interrupter 2, one end of the second resistor R2, and the second serial input/output port of the main control chip U1;
the other end of the second resistor R2 is connected with the power supply end of the power supply module 4, and the other end of the second capacitor C2, the negative pin of the light emitting diode of the photoelectric circuit breaker 2 and the emitter pin of the phototriode are all grounded.
As can be seen from the above description, the above description is the circuit of the connection part of the main control chip U1 and the photo interrupter 2. The main control chip U1 is connected to the light emitting diode of the photo interrupter 2 through the first serial input/output port to supply power, so that the light emitting diode emits light beams, and receives the electrical signals from the photo transistor of the photo interrupter 2 through the second serial input/output port. The frequency variation of the electrical signal corresponds to: the grating wheel 3 reflects the light beam from the photo interrupter 2 to the photo transistor one time and again as the bearing 6 rotates, thereby causing the change of the electric signal output by the photo transistor, i.e. the change of the rotation frequency of the bearing 6.
Further, the bearing 6 driving module 5 comprises a driving motor 7, a driving gear assembly 8, a first triode Q1, a thyristor Q2, a third resistor R3 and a fourth resistor R4;
one end of the third resistor R3 is connected to the third serial input/output port of the main control chip U1, and the other end of the third resistor R3 is connected to the base of the first triode Q1, one end of the fourth resistor R4 is connected to the collector of the first triode Q1, and the other end of the fourth resistor R4 is connected to the power control electrode of the thyristor Q2, the positive electrode of the thyristor Q2 is connected to the negative electrode of the driving motor 7, and the positive electrode of the driving motor 7 is connected to the power supply end of the power supply module 4;
the emitting electrode of the first triode Q1 and the negative electrode of the silicon controlled rectifier Q2 are both grounded, the bearing 6 is assembled on the driving motor 7, one end of the driving gear assembly 8 is sleeved on the bearing 6, the other end of the driving gear assembly is fixedly connected with the can opener blade, and the first triode Q1 and the silicon controlled rectifier Q2 are both NPN type.
From the above description, when the bearing is to be controlled to drive the can opener blade to rotate, the main control chip U1 outputs a high level through the third serial input/output port, so that the first triode Q1 is turned on and the thyristor Q2 is turned on successively. The output value of the power supply end of the power supply module 4 drives the motor 7, so that the driving motor 7 drives the bearing 6 to rotate, and further the can opener blade also starts to rotate.
Further, the electronic device further comprises a key switch module 9, the key switch module 9 comprises a key switch S1, a second transistor Q3, a fourth resistor R4 and a fifth resistor R5, and the connection between the positive electrode of the driving motor 7 and the power supply terminal of the power supply module 4 is replaced by:
one end of the key switch S1 is connected to the power supply end of the power supply module 4, and the other end is connected to the positive electrode of the driving motor 7 and one end of the fourth resistor R4; the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to the base of the second triode Q3, and the collector of the second triode Q3 is connected to the fourth serial input/output port of the main control chip U1;
the emitter of the second transistor Q3 is grounded, and the second transistor Q3 is NPN.
As can be seen from the above description, a key switch module 9 is also added between the driving motor 7 and the power supply module 4. The fourth serial input/output port of the main control chip U1 is connected to the collector of the second transistor Q3. Only when the key switch S1 is pressed, the output of the power supply terminal of the power supply module 4 can output value to drive the motor 7; the second transistor Q3 will be turned on; the main control chip U1 can receive the electric signal from the key switch module 9, thereby controlling the operation of the driving motor 7.
The method and apparatus for automatically stopping can opener described in the following embodiments are suitable for can openers that open cans by side cutting, and can automatically stop the operation of side cutting can opener for different types of cans.
Referring to fig. 1, a first embodiment of the present invention is:
a device for automatically stopping can opening of a can opener is shown in figure 1 and comprises a control module 1, a photoelectric circuit breaker 2, a grating wheel 3, a power supply module 4, a bearing driving module 5 with a bearing 6 and a can opener blade. The control module 1 is electrically connected with the power supply module 4, the bearing driving module 5 and the photoelectric circuit breaker 2 respectively; the power supply module 4 is simultaneously electrically connected with the bearing driving module 5 and the photoelectric circuit breaker 2, the grating wheel 3 is sleeved on the bearing 6, the movement track of the grating wheel 3 passes through the photoelectric detection area of the photoelectric circuit breaker 2, and the bearing 6 is fixedly connected with the blade of the can opener;
the bearing 6 drives the grating wheel 3 to rotate, and the control module 1 is used for measuring and calculating the change of the rotation frequency of the bearing 6 in the tank opening process.
In this embodiment, grating wheel 3 rotates along with the rotation of bearing 6 and in-process, grating wheel 3 accomplishes the rotation of a week at every turn, just can reflect the light beam that comes from photoelectric breaker 2 once for the illumination intensity that photoelectric breaker 2 received changes along with the rotation of grating wheel 3, and then photoelectric breaker 2 output represents the corresponding signal of telecommunication that changes. The control module 1 can obtain the frequency value and the change of the rotation frequency of the bearing 6 through the electric signal.
It should be understood that the present embodiment and the following embodiments mainly aim to acquire rotation data of the bearing 6, and a method for processing motion data to obtain whether the can opener blade repeatedly cuts or not can be implemented by using an existing calculation method, which is not described in detail in the present embodiment and the following embodiments.
Referring to fig. 2 to 7, a second embodiment of the present invention is:
on the basis of the first embodiment, as shown in fig. 4, the control module 1 includes a main control chip U1 and a first capacitor C1. One end of the first capacitor C1 is connected to the power supply voltage input pin of the main control chip U1 and the power supply terminal of the power supply module 4, and the other end is connected to the ground pin of the main control chip U1.
As shown in fig. 3 and 4, the capacitor further includes a first resistor R1, a second resistor R2, and a second capacitor C2. One end of a first resistor R1 is connected with a first serial input/output port of the main control chip U1, the other end of the first resistor R1 is connected with a light emitting diode positive electrode pin of the photoelectric circuit breaker 2, and one end of a second capacitor C2 is connected with a collector electrode pin of a photoelectric triode of the photoelectric circuit breaker 2, one end of a second resistor R2 and a second serial input/output port of the main control chip U1;
the other end of the second resistor R2 is connected with the power supply end of the power supply module 4, and the other end of the second capacitor C2, the negative electrode pin of the light emitting diode of the photoelectric circuit breaker 2 and the emitter pin of the photoelectric triode are all grounded.
As can be seen from the above description, the above description is the circuit of the connection part of the main control chip U1 and the photo interrupter 2. The main control chip U1 is connected to the light emitting diode of the photo interrupter 2 through the first serial input/output port to supply power, so that the light emitting diode emits light beams, and receives the electrical signals from the photo transistor of the photo interrupter 2 through the second serial input/output port. The frequency variation of the electrical signal corresponds to: the grating wheel 3 reflects the light beam from the photo interrupter 2 to the photo transistor one time and again as the bearing 6 rotates, thereby causing the change of the electric signal output by the photo transistor, i.e. the change of the rotation frequency of the bearing 6.
As shown in fig. 3 and 5, the bearing 6 driving module 5 includes a driving motor 7, a driving gear assembly 8, a first transistor Q1, a thyristor Q2, a third resistor R3 and a fourth resistor R4. One end of a third resistor R3 is connected with a third serial input/output port of the main control chip U1, the other end of the third resistor R3 is connected with the base electrode of a first triode Q1, one end of a fourth resistor R4 is connected with the collector electrode of the first triode Q1, the other end of the fourth resistor R4 is connected with the base electrode of a controlled silicon Q2, the collector electrode of the controlled silicon Q2 is connected with the negative electrode of the driving motor 7, and the positive electrode of the driving motor 7 is connected with the power supply end of the power supply module 4;
the emitting electrode of the first triode Q1 and the emitting electrodes of the second triodes are grounded, the bearing 6 is assembled on the driving motor 7, one end of the driving gear assembly 8 is sleeved on the bearing 6, the other end of the driving gear assembly is fixedly connected with the can opener blade, and the first triode Q1 is of an NPN type.
As shown in fig. 3, 5 and 6, the electronic device further includes a key switch module 9, the key switch module 9 includes a key switch, a second transistor Q3, a fourth resistor R4 and a fifth resistor R5, and the connection between the positive electrode of the driving motor 7 and the power supply terminal of the power supply module 4 is replaced by:
one end of the key switch S1 is connected to the power supply end of the power supply module 4, and the other end is connected to the positive electrode of the driving motor 7 and one end of the fourth resistor R4; the other end of the fourth resistor R4 is connected with one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected with the base electrode of a second triode Q3, and the collector electrode of the second triode Q3 is connected with a fourth serial input/output port of the main control chip U1;
the emitter of the second transistor Q3 is grounded, and the second transistor Q3 is NPN.
In this embodiment, the above is a specific circuit connection diagram of the can opener device in this embodiment. One specific application process of this embodiment is as follows:
if the user keeps pressing the key switch S1, the fourth serial input/output port of the main control chip U1 will detect a square wave signal (50-60 hz), and at this time, the first serial input/output port of the main control chip U1 outputs a high level to start the photo interrupter 2. Meanwhile, the third serial input/output port of the main control chip U1 outputs a high level, so that the first triode Q1 and the thyristor Q2 are sequentially turned on to drive the motor 7 to start. The driving motor 7 is started to drive the grating wheel 3 on the bearing 6 to rotate. During the can opener blade switching process, the main control chip U1 receives the frequency signal from the photo interrupter 2. When the frequency change of the bearing 6 is measured to be in accordance with the condition of generating repeated cutting, the main control chip U1 stops driving the motor 7, and the can opener blade also stops.
In this embodiment, the power supply module 4 is designed to supply power by using a low-cost RC voltage reduction method in cooperation with a zener diode. In other equivalent embodiments, the design of the power supply module 4 can also be replaced by a switching power supply scheme with isolation or non-isolation and a DCDC buck or LDO buck.
In this embodiment, the main control chip U1 is an 8-bit single chip microcomputer packaged by a simple sop-8. In other embodiments, the main control chip U1 may be implemented by using a single chip microcomputer chip with different 8 bits, 16 bits or 32 bits and different packaging methods.
As shown in fig. 6 and 7, fig. 6 and 7 relate to a specific product design diagram of the present invention, and the grating wheel 3, the driving motor 7, and other components are all disposed inside the product design diagram.
In other embodiments, the thyristor Q2 of the bearing driving module 5 may be replaced by a thyristor Q2 of a different type or a relay, and the operation or stop of the driving motor 7 may also be controlled.
To sum up, the utility model discloses a can opener automatic stop device of opening jar is provided, and control module uses through the cooperation of photoelectric circuit breaker and grating wheel, calculates and calculates whether the rotational frequency change of opening a jar in-process bearing at the can opener judges to have produced the repeated cutting. When the can opener blade is repeatedly cut, the rotation of the blade is stopped in time, and the problem caused by repeated cutting is avoided.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. A device for automatically stopping can opening of a can opener is characterized by comprising a control module, a photoelectric circuit breaker, a grating wheel, a power supply module, a bearing driving module with a bearing and a can opener blade;
the control module is electrically connected with the power supply module, the bearing driving module and the photoelectric circuit breaker respectively; the power supply module is simultaneously electrically connected with the bearing driving module and the photoelectric circuit breaker, the grating wheel is sleeved on the bearing, the motion track of the grating wheel passes through a photoelectric detection area of the photoelectric circuit breaker, and the bearing is fixedly connected with the can opener blade;
the bearing drives the grating wheel to rotate, and the control module is used for measuring and calculating the change of the rotation frequency of the bearing in the tank opening process.
2. The device for automatically stopping the opening of the can opener according to claim 1, wherein the control module comprises a main control chip and a first capacitor;
one end of the first capacitor is connected with the power supply voltage input pin of the main control chip and the power supply end of the power supply module, and the other end of the first capacitor is connected with the grounding pin of the main control chip.
3. The device for automatically stopping the opening of the can opener according to claim 2, which is characterized by further comprising a first resistor, a second resistor and a second capacitor;
one end of the first resistor is connected with a first serial input/output port of the main control chip, the other end of the first resistor is connected with a positive pin of a light emitting diode of the photoelectric circuit breaker, and one end of the second capacitor is simultaneously connected with a collector pin of a photoelectric triode of the photoelectric circuit breaker, one end of the second resistor and a second serial input/output port of the main control chip;
the other end of the second resistor is connected with the power supply end of the power supply module, and the other end of the second capacitor, the negative pin of the light emitting diode of the photoelectric circuit breaker and the emitter pin of the photoelectric triode are all grounded.
4. The device for automatically stopping the opening of the can opener according to claim 2, wherein the bearing driving module comprises a driving motor, a driving gear, a first triode, a thyristor, a third resistor and a fourth resistor;
one end of the third resistor is connected with a third serial input/output port of the main control chip, the other end of the third resistor is connected with a base electrode of the first triode, one end of the fourth resistor is connected with a collector electrode of the first triode, the other end of the fourth resistor is connected with a power control electrode of the controlled silicon, a positive electrode of the controlled silicon is connected with a negative electrode of the driving motor, and a positive electrode of the driving motor is connected with a power supply end of the power supply module;
the emitting electrode of the first triode and the negative electrode of the controlled silicon are grounded, the bearing is assembled on the driving motor, one end of the driving gear is sleeved on the bearing, the other end of the driving gear is fixedly connected with the blade of the can opener, and the first triode is of an NPN type.
5. The device for automatically stopping the opening of the can opener according to claim 4, further comprising a key switch, a second triode, a fourth resistor and a fifth resistor, wherein the positive electrode of the driving motor is connected with the power supply end of the power supply module and replaced by:
one end of the key switch is connected with the power supply end of the power supply module, and the other end of the key switch is connected with the positive electrode of the driving motor and one end of the fourth resistor; the other end of the fourth resistor is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with the base electrode of the second triode, and the collector electrode of the second triode is connected with a fourth serial input/output port of the main control chip;
and an emitting electrode of the second triode is grounded, and the second triode is of an NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059534.1U CN214059842U (en) | 2020-12-17 | 2020-12-17 | Device for automatically stopping can opening of can opener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059534.1U CN214059842U (en) | 2020-12-17 | 2020-12-17 | Device for automatically stopping can opening of can opener |
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| CN214059842U true CN214059842U (en) | 2021-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220194770A1 (en) * | 2020-12-17 | 2022-06-23 | X. J. Electrics (Shenzhen) Co., Ltd. | Automatic Stop Method and Device for Can Opener |
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- 2020-12-17 CN CN202023059534.1U patent/CN214059842U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220194770A1 (en) * | 2020-12-17 | 2022-06-23 | X. J. Electrics (Shenzhen) Co., Ltd. | Automatic Stop Method and Device for Can Opener |
| US11827504B2 (en) * | 2020-12-17 | 2023-11-28 | X. J. Electrics (Shenzhen) Co., Ltd. | Automatic stop method and device for can opener |
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