Door opening device, door body assembly and refrigerator

Abstract

The utility model relates to a door opening device, a door body assembly and a refrigerator. The door opening device comprises a push rod motor driving circuit, a push rod motor and a push rod. The input end of the push rod motor driving circuit is connected with the refrigerator door body controller, the output end of the push rod motor driving circuit is connected with the push rod motor, the push rod motor is connected with the push rod, and the push rod motor drives the push rod to stretch out to push the corresponding refrigerator door body under the condition that the push rod motor receives a door opening signal of the refrigerator door body controller. The refrigerator door body can be automatically opened, and the convenience of opening the refrigerator door body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigerator technical field especially relates to a door opening device, door body subassembly and refrigerator. BACKGROUND

[0002] The refrigerator is indispensable electrical equipment, and the application of the refrigerator facilitates food storage and preservation, and improves the convenience of food storage. In related technologies, the refrigerator usually adopts an opening mode of manually pulling open the refrigerator door by a user, but during cooking, the user needs to manually handle food materials or perform some cooking operations, so that the user cannot clean hands in time to complete the operation of pulling open the refrigerator door body, therefore, the opening mode of manually pulling open the refrigerator door is not convenient enough, and cannot meet the use demand of the user. SUMMARY

[0003] In order to solve at least one of the above technical problems, the utility model provides a door opening device, door body subassembly and refrigerator.

[0004] The door opening device comprises a push rod motor driving circuit, a push rod motor and a push rod.

[0005] The input end of the push rod motor driving circuit is connected with a refrigerator door body controller, the output end of the push rod motor driving circuit is connected with the push rod motor, the push rod motor is connected with the push rod, and the push rod motor drives the push rod to extend to push away the corresponding refrigerator door body under the condition of receiving the door opening signal of the refrigerator door body controller.

[0006] In an optional embodiment, the push rod motor driving circuit comprises a signal processing controller, a first filter circuit and a push rod moving speed adjusting circuit.

[0007] The power input end of the signal processing controller is connected with a constant power supply through the first filter circuit, and the first filter circuit is used for filtering the power supply.

[0008] The signal input end of the signal processing controller is connected with the refrigerator door body controller.

[0009] The signal output end of the signal processing controller is connected with the push rod motor.

[0010] The output signal adjusting end of the signal processing controller is connected with the push rod moving speed adjusting circuit, the push rod moving speed adjusting circuit is used for adjusting the current size of the output signal of the signal processing controller to adjust the rotating speed of the motor, and then changes the moving speed of the push rod.

[0011] The grounding end of the signal processing controller is grounded.

[0012] In an optional embodiment, the first filter circuit comprises a first capacitor.

[0013] One end of the first capacitor is connected with a constant power supply and a power input end of the signal processing controller respectively, and the other end of the first capacitor is grounded.

[0014] In an optional embodiment, the output signal adjusting end of the signal processing controller comprises a current detection end and a current setting end, and the push rod moving speed adjusting circuit comprises a first resistor, a second resistor, a third resistor and a second capacitor.

[0015] One end of the first resistor is connected with the current detection end, and the other end of the first resistor is grounded.

[0016] One end of the second resistor, one end of the third resistor and one end of the second capacitor are connected with the current setting end respectively, the other end of the second resistor is connected with a power supply, and the other end of the third resistor and the other end of the second capacitor are grounded.

[0017] In an optional embodiment, the signal output end of the signal processing controller comprises a signal positive output end and a signal negative output end, the signal positive output end is connected with a first terminal of the push rod motor, and the signal negative output end is connected with a second terminal of the push rod motor.

[0018] In an optional embodiment, the push rod motor driving circuit further comprises a second filter circuit.

[0019] The signal input end of the signal processing controller is connected with the refrigerator door body controller through the second filter circuit, and the second filter circuit is used for filtering an electric signal output by the refrigerator door body controller.

[0020] In an optional embodiment, the signal input end of the signal processing controller comprises a signal positive input end and a signal negative input end, and the second filter circuit comprises a fourth resistor, a fifth resistor, a third capacitor and a fourth capacitor.

[0021] One end of the fourth resistor is connected with a positive output end of the refrigerator door body controller, the other end of the fourth resistor and one end of the third capacitor are connected with the signal positive input end, and the other end of the third capacitor is grounded.

[0022] One end of the fifth resistor is connected with a negative output end of the refrigerator door body controller, the other end of the fifth resistor and one end of the fourth capacitor are connected with the signal negative input end, and the other end of the fourth capacitor is grounded.

[0023] In an optional embodiment, the refrigerator door body controller is used for converting an opening instruction of the refrigerator door body into a corresponding hardware signal and transmitting the hardware signal to a corresponding push rod motor driving circuit, and the opening instruction is a voice instruction, a touch instruction or a pressing instruction.

[0024] In a second aspect, the utility model also provides a door body assembly, the door body assembly is fixed with the door opening device.

[0025] The third aspect of the utility model also provides a refrigerator, refrigerator is provided with a plurality of above-mentioned door body subassembly.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model.

[0027] The utility model discloses, has following beneficial effects:

[0028] The door opening device comprises a push rod motor driving circuit, a push rod motor and a push rod.

[0029] The utility model discloses a push rod motor driving circuit's input and refrigerator door body controller connection, push rod motor driving circuit's output and push rod motor connection, push rod motor and push rod connection can realize through push rod motor in receiving the door opening signal of refrigerator door body controller, by push rod motor drive push rod to push out to push open the corresponding refrigerator door body, automatically complete the opening of refrigerator door body, improve the convenience of refrigerator door body opening.

[0030] Other features and aspects of the utility model will become apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme and advantages in the embodiments of the present application or related technical schemes, the accompanying drawings needed to be used in the embodiments or related technical description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort. The accompanying drawings are incorporated into the specification and form part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application, and do not constitute undue limitation on the present application.

[0032] Figure 1 It is a schematic view of a door opening device according to an exemplary embodiment;

[0033] Figure 2 It is a schematic view of a door opening device circuit module composition according to an exemplary embodiment;

[0034] Figure 3 It is a circuit schematic view of a door opening device according to an exemplary embodiment;

[0035] The following is a supplement to the drawings:

[0036] R1 - first resistor; R2 - second resistor; R3 - third resistor; R4 - fourth resistor; R5 - fifth resistor; C1 - first capacitor; C2 - second capacitor; C3 - third capacitor; C4 - fourth capacitor; GND pin - No. 1 pin of the signal processing controller; IN2 - No. 2 pin of the signal processing controller; IN1 - No. 3 pin of the signal processing controller; VREF - No. 4 pin of the signal processing controller; VM - No. 5 pin of the signal processing controller; OUT1 - No. 6 pin of the signal processing controller; RS - No. 7 pin of the signal processing controller; OUT2 - No. 8 pin of the signal processing controller; GND1, GND2, GND3, GND4, GND5 - ground. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present specification will be described clearly and completely below in combination with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only some of the embodiments of the present specification, not all the embodiments. Based on the embodiments in the present specification, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or server including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0039] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings represent functionally identical or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated. The word "exemplary" used herein means "serving as an example, embodiment, or illustration". Any embodiment described herein as "exemplary" is not necessarily interpreted as superior or better than other embodiments.

[0040] The term "and / or", as used herein, merely describes association between associated objects, and can represent three conditions: A and / or B can mean: A alone, both A and B, and B alone. In addition, the term "at least one of", as used herein, means any one of or a combination of at least two of the plurality, for example, at least one of A, B, and C can mean any one or more elements selected from the set consisting of A, B, and C.

[0041] In addition, in order to better illustrate the utility model, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the utility model can also be implemented without certain specific details. In some examples, methods, means, elements and circuits familiar to those skilled in the art are not described in detail in order to highlight the main idea of the utility model.

[0042] In the related art, the refrigerator usually adopts a manual opening mode in which the user manually pulls open the refrigerator door. However, during cooking, the user needs to manually handle food materials or perform some cooking operations, which causes the user to be unable to clean his hands in time to pull open the refrigerator door body. Therefore, the manual opening mode of pulling open the refrigerator door cannot meet the user's use requirements.

[0043] In order to improve the convenience of opening the refrigerator door body, the embodiment provides a door opening device, a door body assembly and a refrigerator.

[0044] Figure 1 It is a door opening device schematic diagram according to an exemplary embodiment, as shown in Figure 1 As shown, the door opening device comprises a push rod motor driving circuit, a push rod motor and a push rod. The input end of the push rod motor driving circuit is connected with a refrigerator door body controller, the output end of the push rod motor driving circuit is connected with the push rod motor, the push rod motor is connected with the push rod, and the push rod motor drives the push rod to extend to push open the corresponding refrigerator door body under the condition of receiving the door opening signal of the refrigerator door body controller.

[0045] In the embodiment of the utility model, in order to facilitate the push rod to push open the refrigerator door body, the door opening device can be arranged at the middle position of the opening side of the refrigerator door body. Since the storage compartment of the refrigerator is divided into a refrigeration compartment and a freezing compartment, the refrigeration compartment and the freezing compartment are opened through different door bodies. Therefore, in order to facilitate the opening of each storage compartment door body, a door opening device is arranged on the inner side of each storage compartment door body. The input end of the push rod motor driving circuit of each door opening device is connected with the refrigerator door body controller, the output end of the push rod motor driving circuit of each door opening device is connected with the corresponding push rod motor, the push rod motor of each door opening device is connected with the corresponding push rod, and each push rod motor drives the push rod to extend to push open the corresponding refrigerator door body under the condition of receiving the door opening signal of the refrigerator door body controller.

[0046] With the refrigerator provided with a refrigeration chamber and a freezing chamber as an example, the opening door device 1 is arranged inside the opening door side of the refrigeration chamber door body, the opening door device 2 is arranged inside the opening door side of the freezing chamber door body, the input end of the push rod motor driving circuit 1 of the opening door device 1 and the input end of the push rod motor driving circuit 2 of the opening door device 2 are connected with the refrigerator door body controller, the output end of the push rod motor driving circuit 1 of the opening door device 1 is connected with the push rod motor 1 of the opening door device 1, the push rod motor 1 of the opening door device 1 is connected with the push rod 1 of the opening door device 1, the output end of the push rod motor driving circuit 2 of the opening door device 2 is connected with the push rod motor 2 of the opening door device 2, the push rod motor 2 of the opening door device 2 is connected with the push rod 2 of the opening door device 2, the push rod motor 1 of the opening door device 1 drives the push rod 1 of the opening door device 1 to extend to push open the refrigeration chamber door body when receiving the opening door signal of the refrigerator door body controller for the refrigeration chamber door body, and the push rod motor 2 of the opening door device 2 drives the push rod 2 of the opening door device 2 to extend to push open the freezing chamber door body when receiving the opening door signal of the refrigerator door body controller for the freezing chamber door body.

[0047] Figure 2 is a kind of opening door device circuit module composition schematic diagram according to an exemplary embodiment, in an optional embodiment, as shown in Figure 2 Push rod motor driving circuit includes: signal processing controller, first filter circuit and push rod moving speed adjusting circuit;The power input end of signal processing controller is connected with constant power supply by first filter circuit, and first filter circuit is used to filter power supply;The signal input end of signal processing controller is connected with refrigerator door body controller;The signal output end of signal processing controller is connected with push rod motor;The output signal adjusting end of signal processing controller is connected with push rod moving speed adjusting circuit, and push rod moving speed adjusting circuit is used to adjust the current size of the output signal of signal processing controller to adjust the rotating speed of motor, to change the moving speed of push rod;The ground terminal of signal processing controller is grounded (GND).

[0048] In the utility model embodiment, signal processing controller can select TB67H450FNG chip, control push rod motor enters positive rotation, reverse rotation, brake or stop mode, push rod motor positive rotation pushes out push rod and pushes open refrigerator door body, push rod motor reverse rotation retracts push rod, push rod motor brake brakes push rod, and push rod motor stops push rod and keeps stopping.

[0049] Figure 3 is a kind of opening door device circuit schematic diagram according to an exemplary embodiment, as shown in Figure 3As shown, the circuit of the door opening device 1 and the door opening device 2 is completely same, the power input end of the signal processing controller (the signal processing controller 1 or the signal processing controller 2) is the No. 5 pin VM, the pin is connected with the constant power supply 12VA through the first filter circuit, and the constant power supply 12VA supplies power for the signal processing controller.

[0050] In an optional embodiment, the first filter circuit comprises: a first capacitor; one end of the first capacitor is connected with the constant power supply and the power input end of the signal processing controller respectively, and the other end of the first capacitor is grounded.

[0051] In the embodiment of the utility model, as shown in Figure 3 The first capacitor C1 can be selected from 104pF 0603 chip capacitors, and the 0603 chip capacitor is a surface-mounted capacitor, which has the advantages of small size, light weight and convenient installation, and is suitable for electronic circuits. One end of the first capacitor C1 is connected with the constant power supply 12VA and the No. 5 pin VM of the signal processing controller respectively, and the other end of the first capacitor C1 is grounded.

[0052] Based on the above, in the embodiment of the utility model, one end of the first capacitor is connected with the constant power supply and the power input end of the signal processing controller respectively, and the other end of the first capacitor is grounded, so that the power supply can be filtered, the power supply fluctuation can be reduced, and the stability of the push rod motor driving circuit can be improved.

[0053] The connection mode of the signal input end of the signal processing controller and the refrigerator door body controller can be that the signal input end of the signal processing controller is directly connected with the signal output end of the refrigerator door body controller, or the signal output end of the refrigerator door body controller can be filtered through a filter circuit arranged between the signal input end of the signal processing controller and the signal output end of the refrigerator door body controller, and then the filtered signal is transmitted to the signal input end of the signal processing controller.

[0054] In an optional embodiment, as shown in Figure 2 The push rod motor driving circuit further comprises: a second filter circuit; the signal input end of the signal processing controller is connected with the refrigerator door body controller through the second filter circuit, and the second filter circuit is used for filtering the electric signal output by the refrigerator door body controller.

[0055] In this embodiment of the invention, the signal input terminal of the signal processing controller includes a positive signal input terminal and a negative signal input terminal. The second filter circuit includes a fourth resistor, a fifth resistor, a third capacitor, and a fourth capacitor. One end of the fourth resistor is connected to the positive output terminal of the refrigerator door controller, and the other end of the fourth resistor and one end of the third capacitor are connected to the positive signal input terminal, while the other end of the third capacitor is grounded. One end of the fifth resistor is connected to the negative output terminal of the refrigerator door controller, and the other end of the fifth resistor and one end of the fourth capacitor are connected to the negative signal input terminal, while the other end of the fourth capacitor is grounded.

[0056] like Figure 3 As shown, the signal input terminals of the signal processing controller are pin 2 IN2 and pin 3 IN1, respectively. Pin 2 IN2 is the positive signal input terminal, and pin 3 IN1 is the negative signal input terminal. To control multiple door opening devices, the refrigerator door controller has multiple sets of controller signal output terminals. Each set of controller signal output terminals includes a positive controller signal output terminal and a negative controller signal output terminal. The connection method between the signal input terminal of the signal processing controller and the refrigerator door controller through the second filter circuit can be as follows: one end of the fourth resistor R4 is connected to the positive output terminal of the refrigerator door controller, and the other end of the fourth resistor R4 and one end of the third capacitor C3 are connected to the positive signal input terminal, while the other end of the third capacitor C3 is grounded; one end of the fifth resistor R5 is connected to the negative output terminal of the refrigerator door controller, and the other end of the fifth resistor R5 and one end of the fourth capacitor C4 are connected to the negative signal input terminal, while the other end of the fourth capacitor C4 is grounded. The fourth resistor R4 and the fifth resistor R5 are 220Ω 0603 surface mount resistors, and the third capacitor C3 and the fourth capacitor C4 are 101pF 0603 surface mount capacitors. The fourth resistor R4 and the third capacitor C3 form a resistor-capacitor filter, and the fifth resistor R5 and the fourth capacitor C4 form a resistor-capacitor filter.

[0057] As can be seen from the above, in this embodiment of the present invention, one end of the fourth resistor is connected to the positive output terminal of the refrigerator door controller, the other end of the fourth resistor and one end of the third capacitor are connected to the positive input terminal of the signal, and the other end of the third capacitor is grounded. One end of the fifth resistor is connected to the negative output terminal of the refrigerator door controller, the other end of the fifth resistor and one end of the fourth capacitor are connected to the negative input terminal of the signal, and the other end of the fourth capacitor is grounded. This reduces the fluctuation of the electrical signal output by the refrigerator door controller and improves the stability of the push rod motor drive circuit.

[0058] The signal output terminal of the signal processing controller is connected to the terminal of the push rod motor.

[0059] In an optional embodiment, the signal output terminal of the signal processing controller includes a positive signal output terminal and a negative signal output terminal. The positive signal output terminal is connected to the first terminal of the push rod motor, and the negative signal output terminal is connected to the second terminal of the push rod motor.

[0060] In the embodiment of the utility model, as shown in Figure 3 As shown in the figure, the signal output end of the signal processing controller is respectively No. 6 pin OUT1 and No. 8 pin OUT2, No. 6 pin OUT1 is a signal negative output end, No. 8 pin OUT2 is a signal positive output end, No. 6 pin OUT1 is connected with the first terminal 1 of the push rod motor, and No. 8 pin OUT2 is connected with the second terminal 2 of the push rod motor.

[0061] The mode that the signal processing controller drives the push rod motor connected with it is as follows: when No. 2 pin IN2 input is low level and No. 3 pin IN1 input is low level, the signal processing controller confirms that the input is a motor stop signal, sets No. 8 pin OUT2 output to low level and sets No. 6 pin OUT1 output to low level, at this time, the motor keeps stopping and the push rod does not move; when No. 2 pin IN2 input is high level and No. 3 pin IN1 input is low level, the signal processing controller confirms that the input is a motor forward rotation signal, sets No. 8 pin OUT2 output to high level and sets No. 6 pin OUT1 output to low level, at this time, the motor rotates forward and the push rod extends to push the corresponding door body open; when No. 2 pin IN2 input is low level and No. 3 pin IN1 input is high level, the signal processing controller confirms that the input is a motor reverse rotation signal, sets No. 8 pin OUT2 output to low level and sets No. 6 pin OUT1 output to high level, at this time, the motor rotates reversely and the push rod retracts; when No. 2 pin IN2 input is high level and No. 3 pin IN1 input is high level, the signal processing controller confirms that the input is a motor braking signal, sets No. 8 pin OUT2 output to high level and sets No. 6 pin OUT1 output to high level, at this time, the motor brakes and the push rod brakes.

[0062] Based on the above, in the embodiment of the utility model, the signal positive output end is connected with the first terminal of the push rod motor and the signal negative output end is connected with the second terminal of the push rod motor, so that the control signal output by the signal processing controller can be transmitted to the push rod motor, and the push rod motor can operate according to the output signal of the signal processing controller.

[0063] In an optional embodiment, the output signal adjusting end of the signal processing controller comprises a current detection end and a current setting end, and the push rod moving speed adjusting circuit comprises a first resistor, a second resistor, a third resistor and a second capacitor; one end of the first resistor is connected with the current detection end, and the other end of the first resistor is grounded; one end of the second resistor, one end of the third resistor and one end of the second capacitor are connected with the current setting end respectively, the other end of the second resistor is connected with a power supply, and the other end of the third resistor and the other end of the second capacitor are grounded.

[0064] In the embodiment of the utility model, as shown in Figure 3As shown, the current detection end of the signal processing controller is No. 7 pin RS, one end of the first resistor R1 is connected to No. 7 pin RS, the other end of the first resistor R1 is grounded, and the first resistor R1 can be selected as a 100mΩ 0603 patch resistor; the current detection end of the signal processing controller is No. 4 pin VREF, one end of the second resistor R2, one end of the third resistor R3 and one end of the second capacitor C2 are respectively connected to No. 4 pin VREF, the other end of the second resistor R2 is connected to 5VA power supply, the other end of the third resistor R3 and the other end of the second capacitor C2 are grounded, and the second capacitor C2 can be selected as a 104pF packaged capacitor. The second capacitor C2 mainly plays a filtering role, the first resistor R1 interacts with the second resistor R2 and the third resistor R3, and the current size of the output signal of the signal processing controller is jointly adjusted to adjust the rotating speed of the motor, and then the moving speed of the push rod is changed.

[0065] The greater the output current, the faster the rotating speed of the motor, and the faster the speed of the push rod pushing open the refrigerator door body. Therefore, when setting the resistance values of the second resistor R2 and the third resistor R3, the resistance values of the second resistor R2 and the third resistor R3 can be set according to the user's requirement for the speed of the push rod pushing open the refrigerator door body. The speed of pushing open the refrigerator door body can be set to multiple gears. Taking three gears as an example, the speed of the push rod is the fastest at the first gear, the speed of the push rod is moderate at the second gear, and the speed of the push rod is the slowest at the third gear. The second resistor R2 at the second gear can be selected as a 20KΩ packaged resistor, and the third resistor R3 at the second gear can be selected as a 15KΩ packaged resistor. The selected resistance value of the second resistor R2 at the first gear is less than the selected resistance value of the second resistor R2 at the second gear, the selected resistance value of the third resistor R3 at the first gear is less than the selected resistance value of the third resistor R3 at the second gear, the selected resistance value of the second resistor R2 at the third gear is greater than the selected resistance value of the second resistor R2 at the second gear, and the selected resistance value of the third resistor R3 at the third gear is greater than the selected resistance value of the third resistor R3 at the second gear.

[0066] Based on the above, in the embodiment of the utility model, one end of the first resistor is connected to the current detection end, the other end of the first resistor is grounded, one end of the second resistor, one end of the third resistor and one end of the second capacitor are respectively connected to the current setting end, the other end of the second resistor is connected to the power supply, the other end of the third resistor and the other end of the second capacitor are grounded, the current size of the output signal of the signal processing controller can be adjusted to adjust the rotating speed of the motor, and then the moving speed of the push rod is changed.

[0067] As shown in the figure, Figure 3 The ground end of the signal processing controller is No. 1 pin GND, and the No. 1 pin of the signal processing controller is grounded.

[0068] Based on the above, the signal processing controller is arranged in the push rod motor driving circuit to process the door opening signal of the refrigerator door body controller, and the driving of the push rod motor is completed; the first filter circuit is arranged in the push rod motor driving circuit to filter the power supply and reduce the power supply fluctuation; the push rod moving speed adjusting circuit is arranged in the push rod motor driving circuit, the current size of the output signal of the signal processing controller is adjusted to adjust the rotating speed of the motor, and then the moving speed of the push rod is changed.

[0069] In an optional embodiment, the refrigerator door body controller is configured to convert a user's opening instruction for the refrigerator door body into a corresponding hardware signal, and transmit the hardware signal to a corresponding push rod motor driving circuit, the opening instruction being a voice instruction, a touch instruction or a pressing instruction.

[0070] In the embodiment of the utility model, the refrigerator door body controller is a microcontroller (MCU), and the refrigerator door body controller can be connected with a plurality of instruction acquisition components to acquire the opening instruction of the user for the refrigerator door body in different modes. For example, the refrigerator door body controller can be connected with a microphone, a touch screen or a door body pressure sensor to obtain the opening instruction.

[0071] After the microphone collects the voice information related to the opening of the refrigerator door body, such as "open the refrigeration chamber", the voice information is transmitted to the refrigerator door body controller, the refrigerator door body controller generates a corresponding refrigeration chamber door body opening instruction, the refrigeration chamber door body opening instruction inputs a low-level signal into the 2nd pin IN2 of the signal processing controller 1 of the door opening device 1 at the refrigeration chamber door body and inputs a high-level signal into the 3rd pin IN1 of the signal processing controller 1 of the door opening device 1, the signal processing controller 1 of the door opening device 1 confirms that the input is a motor forward rotation signal, sets the 8th pin OUT2 output to high level and the 6th pin OUT1 output to low level, at this time, the push rod motor 1 of the door opening device 1 rotates forward, and the push rod 1 extends to push open the refrigeration chamber door body. Subsequently, the refrigerator door body controller generates a refrigeration chamber door body push rod retracting instruction, the refrigeration chamber door body push rod retracting instruction inputs a high-level signal into the 2nd pin IN2 of the signal processing controller 1 of the door opening device 1 at the refrigeration chamber door body and inputs a low-level signal into the 3rd pin IN1 of the signal processing controller 1 of the door opening device 1, the signal processing controller 1 of the door opening device 1 confirms that the input is a motor reverse rotation signal, sets the 8th pin OUT2 output to low level and the 6th pin OUT1 output to high level, at this time, the push rod motor 1 of the door opening device 1 reverses, and the push rod retracts.

[0072] After the touch screen receives a user's touch instruction related to opening the refrigerator door body, such as "open the freezer", the touch instruction is transmitted to the refrigerator door body controller, which generates a corresponding freezer door body opening instruction. The freezer door body opening instruction inputs a low-level signal to the 2nd pin IN2 of the signal processing controller 2 of the door opening device 2 at the freezer door body and a high-level signal to the 3rd pin IN1 of the signal processing controller 2 of the door opening device 2 at the freezer door body. The signal processing controller 2 of the door opening device 2 confirms that the input is a motor forward rotation signal, sets the 8th pin OUT2 output to high level, and sets the 6th pin OUT1 output to low level. At this time, the push rod motor 2 of the door opening device 2 rotates forward, and the push rod 2 extends to push open the freezer door body. Subsequently, the refrigerator door body controller generates a freezer door body push rod retraction instruction. The freezer door body push rod retraction instruction inputs a high-level signal to the 2nd pin IN2 of the signal processing controller 2 of the door opening device 2 at the freezer door body and a low-level signal to the 3rd pin IN1 of the signal processing controller 2 of the door opening device 2 at the freezer door body. The signal processing controller 2 of the door opening device 2 confirms that the input is a motor reverse rotation signal, sets the 8th pin OUT2 output to low level, and sets the 6th pin OUT1 output to high level. At this time, the push rod motor 2 of the door opening device 2 reverses, and the push rod 2 retracts.

[0073] After the pressure sensor at the refrigerator door body senses the user's pressing pressure on the refrigerator door body, the pressing instruction is transmitted to the refrigerator door body controller. When the pressure value is greater than the preset pressure threshold, the refrigerator door body controller generates a corresponding refrigerator door body opening instruction. The refrigerator door body opening instruction inputs a low-level signal to the 2nd pin IN2 of the signal processing controller 1 of the door opening device 1 at the refrigerator door body and a high-level signal to the 3rd pin IN1 of the signal processing controller 1 of the door opening device 1 at the refrigerator door body. The signal processing controller 1 of the door opening device 1 confirms that the input is a motor forward rotation signal, sets the 8th pin OUT2 output to high level, and sets the 6th pin OUT1 output to low level. At this time, the push rod motor 1 of the door opening device 1 rotates forward, and the push rod 1 extends to push open the refrigerator door body. Subsequently, the refrigerator door body controller generates a refrigerator door body push rod retraction instruction. The refrigerator door body push rod retraction instruction inputs a high-level signal to the 2nd pin IN2 of the signal processing controller 1 of the door opening device 1 at the refrigerator door body and a low-level signal to the 3rd pin IN1 of the signal processing controller 1 of the door opening device 1 at the refrigerator door body. The signal processing controller 1 of the door opening device 1 confirms that the input is a motor reverse rotation signal, sets the 8th pin OUT2 output to low level, and sets the 6th pin OUT1 output to high level. At this time, the push rod motor 1 of the door opening device 1 reverses, and the push rod retracts.

[0074] Based on the above, the voice instruction, the touch instruction or the pressing instruction of the user for the refrigerator door body is converted into the corresponding hardware signal by the refrigerator door body controller, and the hardware signal is transmitted to the corresponding push rod motor driving circuit, so that the processing of the opening door instruction of the user is completed to obtain the corresponding electric signal, and the opening of the refrigerator door is controlled by the user through the voice, the touch, the pressing and the like.

[0075] In the second aspect, the utility model provides a door body assembly, and the door body assembly is fixed with the door opening device.

[0076] In the third aspect, the utility model provides a refrigerator, and the refrigerator is provided with a plurality of door body assemblies.

[0077] Other embodiments of the utility model will be readily apparent to those skilled in the art from the disclosure herein. The generic principles defined herein can be applied to other embodiments without departing from the scope of the utility model. The utility model is not limited to the embodiments described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is limited only by the claims that follow. The true scope and spirit of the utility model are indicated by the claims.

[0078] It should be understood that the utility model is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is limited only by the claims that follow. The true scope and spirit of the utility model are indicated by the claims.

Claims

1. A door opening device, characterized in that, The door opening device includes: a push rod motor drive circuit, a push rod motor, and a push rod; The input terminal of the push rod motor drive circuit is connected to the refrigerator door controller, the output terminal of the push rod motor drive circuit is connected to the push rod motor, the push rod motor is connected to the push rod, and when the push rod motor receives the door opening signal from the refrigerator door controller, the push rod motor drives the push rod to extend and push open the corresponding refrigerator door.

2. The door opening device according to claim 1, characterized in that, The push rod motor drive circuit includes: a signal processing controller, a first filtering circuit, and a push rod moving speed adjustment circuit; The power input terminal of the signal processing controller is connected to a constant power supply through the first filter circuit, which is used to filter the power supply. The signal input terminal of the signal processing controller is connected to the refrigerator door controller; The signal output terminal of the signal processing controller is connected to the push rod motor; The output signal adjustment terminal of the signal processing controller is connected to the push rod moving speed adjustment circuit. The push rod moving speed adjustment circuit is used to adjust the current magnitude of the output signal of the signal processing controller to adjust the speed of the motor, thereby changing the moving speed of the push rod. The grounding terminal of the signal processing controller is grounded.

3. The door opening device according to claim 2, characterized in that, The first filter circuit includes: a first capacitor; One end of the first capacitor is connected to both the constant power supply and the power input terminal of the signal processing controller, and the other end of the first capacitor is grounded.

4. The door opening device according to claim 2, characterized in that, The output signal adjustment terminal of the signal processing controller includes a current detection terminal and a current setting terminal, and the push rod moving speed adjustment circuit includes: a first resistor, a second resistor, a third resistor, and a second capacitor; One end of the first resistor is connected to the current detection terminal, and the other end of the first resistor is grounded; One end of the second resistor, one end of the third resistor, and one end of the second capacitor are respectively connected to the current setting terminal. The other end of the second resistor is connected to the power supply, and the other ends of the third resistor and the second capacitor are grounded.

5. The door opening device according to claim 2, characterized in that, The signal output terminal of the signal processing controller includes a positive signal output terminal and a negative signal output terminal. The positive signal output terminal is connected to the first terminal of the push rod motor, and the negative signal output terminal is connected to the second terminal of the push rod motor.

6. The door opening device according to claim 2, characterized in that, The push rod motor drive circuit also includes: a second filter circuit; The signal input terminal of the signal processing controller is connected to the refrigerator door controller through the second filtering circuit, which is used to filter the electrical signal output by the refrigerator door controller.

7. The door opening device according to claim 6, characterized in that, The signal input terminal of the signal processing controller includes a positive signal input terminal and a negative signal input terminal, and the second filter circuit includes: a fourth resistor, a fifth resistor, a third capacitor, and a fourth capacitor; One end of the fourth resistor is connected to the positive output terminal of the refrigerator door controller, and the other end of the fourth resistor and one end of the third capacitor are connected to the positive input terminal of the signal. The other end of the third capacitor is grounded. One end of the fifth resistor is connected to the negative output terminal of the refrigerator door controller, and the other end of the fifth resistor and one end of the fourth capacitor are connected to the negative input terminal of the signal. The other end of the fourth capacitor is grounded.

8. The door opening device according to claim 1, characterized in that: The refrigerator door controller is used to convert the user's opening command for the refrigerator door into a corresponding hardware signal, and transmit the hardware signal to the corresponding push rod motor drive circuit. The opening command can be a voice command, a touch command, or a press command.

9. A door assembly, characterized in that, The door assembly is fixed with an opening device as described in any one of claims 1 to 8.

10. A refrigerator, characterized in that, The refrigerator is provided with a plurality of door components as described in claim 9.

Images