Cabinet setting method based on press switch, automatic door-opening control method for refrigerator, and refrigerator

Abstract

A cabinet setting method based on a press switch, an automatic door-opening control method for a refrigerator, and a refrigerator. The cabinet setting method comprises: acquiring a maximum stroke Z of a trigger rod; determining an actual value X between a first surface and a trigger surface after a door is mounted to a cabinet; on the basis of the actual value X and a theoretical value X0 between the first surface and the trigger surface, obtaining an upper deviation m between X and X0; and determining a compensation displacement value a between an abutment surface and the trigger surface, such that the compensation displacement value a satisfies: m < a < Z.

Description

Cabinet installation method based on push-button switch, automatic door opening control method for refrigerator and refrigerator

[0001] Related applications

[0002] This application claims priority to Chinese patent applications filed on July 29, 2024, with application number 202411025103.3 entitled "Cabinet Opening Method and Refrigerator Based on Press Switch" and July 29, 2024, with application number 202411025100.X entitled "Automatic Door Opening Control Method and Refrigerator", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of home appliances, and in particular to a cabinet setting method based on a push-button switch, an automatic door opening control method for a refrigerator, and a refrigerator. Background Technology

[0004] Automatic door opening is a development trend in home appliance technology, especially for appliances with built-in, handle-less doors (such as refrigerators and steam ovens), which need to solve the problem of how to open the door. One solution for opening built-in appliances is for the user to press the door, triggering an opening sensor that then pushes the door open with an electric push rod. This method effectively improves the user experience.

[0005] However, during the manufacturing process, there may be assembly errors or deviations between the cabinet and the door, resulting in an excessive gap between them. Consequently, when the refrigerator is closed, no matter how much the door is pressed towards the push-button switch, it cannot make contact with the switch, thus preventing the switch from detecting the pressure value and making it impossible to open the door. Summary of the Invention

[0006] According to various embodiments of this application, a cabinet setting method based on a push-button switch, an automatic door opening control method for a refrigerator, and a refrigerator are provided.

[0007] In a first aspect, this application provides a cabinet setting method based on a push-button switch. The cabinet includes a housing, a door, and a push-button switch. The door is mounted on the housing and has a trigger surface, and the side of the housing facing the door is defined as a first surface. The push-button switch includes a housing, a trigger rod, and an elastic element. The housing is mounted on the housing, and the elastic element is mounted on the housing. One end of the trigger rod abuts against the elastic element, and the other end protrudes from the first surface, with its end face defined as an abutment surface. The abutment surface can abut against the trigger surface as the trigger rod is subjected to force, so as to trigger the push-button switch.

[0008] The cabinet opening method based on a push-button switch includes:

[0009] Obtain the maximum stroke Z of the trigger lever;

[0010] After the door is installed into the housing, the actual value X between the first surface and the trigger surface is determined; and, based on the actual value X and the theoretical value X0 between the first surface and the trigger surface, the upper deviation m between X and X0 is obtained;

[0011] Determine the compensation displacement value a between the contact surface and the trigger surface, such that the compensation displacement value a satisfies: m < a < Z.

[0012] In one embodiment, a trigger protrusion is provided on the trigger surface, which is used to engage with the trigger rod.

[0013] In one embodiment, when the door is pressed, the maximum distance that the door can move relative to the box is L, and the theoretical distance between the first surface and the abutting surface is Y, wherein L, Y, and Z satisfy the relationship: Z>Y>L.

[0014] Secondly, this application also provides a refrigerator. The refrigerator includes a cabinet, a door, and a push-button switch. The door is mounted on the cabinet and has a trigger surface, and the surface of the cabinet closest to the door is defined as a first surface. The push-button switch includes a housing, a trigger rod, and an elastic element. The housing is mounted on the cabinet, the elastic element is mounted on the housing, one end of the trigger rod abuts against the elastic element, and the other end protrudes from the first surface, with its end face defined as an abutting surface. The abutting surface can abut against the trigger surface as the trigger rod is subjected to force, thereby triggering the push-button switch.

[0015] Wherein, the maximum stroke of the trigger rod is Z, the actual value between the first surface and the trigger surface is X, the theoretical value between the first surface and the trigger surface is X0, the upper deviation between X and X0 is m, and the compensation displacement value a between the abutment surface and the trigger surface satisfies: m < a < Z.

[0016] In one embodiment, a trigger protrusion is provided on the trigger surface, which is used to engage with the trigger rod.

[0017] In one embodiment, when the door is pressed, the maximum distance that the door can move relative to the box is L, and the theoretical distance between the first surface and the abutting surface is Y, wherein L, Y, and Z satisfy the relationship: Z>Y>L.

[0018] In one embodiment, the push switch further includes a support plate and a circuit board. The support plate is housed in the housing and divides the interior of the housing into a first cavity and a second cavity. The circuit board is located in the first cavity. The end of the elastic element away from the trigger rod acts on the support plate.

[0019] In one embodiment, the support plate is provided with a mounting base, the mounting base is equipped with a trigger seat, and the end of the elastic member away from the trigger rod is sleeved on the trigger seat.

[0020] In one embodiment, the maximum stroke Z of the trigger rod and the maximum compression M of the elastic element satisfy the condition: Z ≤ M.

[0021] In one embodiment, a switch bracket is provided on the housing, and the first surface is formed on the switch bracket; wherein, a through hole is provided on the first surface, and one end of the trigger rod having an abutment surface protrudes through the through hole for engagement with the trigger surface.

[0022] Thirdly, this application provides an automatic door opening control method for a refrigerator. The refrigerator includes a cabinet, a door, and a main control board. The cabinet is equipped with a pressure sensor, a magnetic sensor, and a push switch. The push switch is correspondingly configured with the pressure sensor. The pressure sensor is used to sense the push signal input by the push switch. The magnetic sensor is used to detect the open / closed state of the door. The method includes:

[0023] When the door is closed, the pressure sensor senses the user pressing the door and, based on the first and second pressing signals input sequentially through the push switch, determines whether to generate a trigger signal.

[0024] If so, the main control board generates an opening command based on the trigger signal to control the door to open.

[0025] In some embodiments, determining whether to generate a trigger signal based on the first press signal and the second press signal includes:

[0026] If the difference between the second pressing signal and the first pressing signal is greater than a preset value, the trigger signal is generated; otherwise, the trigger signal is not generated.

[0027] In some embodiments, when the door is in the closed state, the pressure sensor is subjected to force by the push switch, and the method further includes:

[0028] When the door changes from the open state to the closed state, the pressure sensor senses the third and fourth press signals input sequentially by the push switch. If the difference between the fourth press signal and the third press signal is greater than a preset value, a trigger signal is generated.

[0029] The main control board receives the trigger signal but does not generate the door opening command.

[0030] In some embodiments, the push switch includes a button and a spring sleeved on the button, the button passing through the housing and being interference-fitted with the door;

[0031] The preset value is determined based on the compensation displacement value between the button and the door.

[0032] In some embodiments, the compensation displacement value is less than the maximum travel of the button and greater than the upper limit of the error between the door and the housing.

[0033] In some embodiments, the main control board determines the opening and closing state of the door based on the magnetic signal of the magnetic sensor;

[0034] When the magnetic sensor is determined to be in a closed state based on the magnetic signal, the door is determined to be in an open state; when the magnetic sensor is determined to be in a closed state based on the magnetic signal, the door is determined to be in a closed state.

[0035] Fourthly, this application provides a refrigerator, including a cabinet, a door, and a main control board. The cabinet is equipped with a pressure sensor, a magnetic sensor, and a push-button switch. The push-button switch is correspondingly configured with the pressure sensor. The pressure sensor is used to sense a pressing signal input from the push-button switch, and the magnetic sensor is used to detect the open / closed state of the door.

[0036] When the door is closed, the pressure sensor senses the user pressing the door and, based on the first and second pressing signals input sequentially through the push switch, determines whether to generate a trigger signal.

[0037] If so, the main control board generates an opening command based on the trigger signal to control the door to open.

[0038] In some embodiments, when the door changes from an open state to a closed state, the pressure sensor senses the third and fourth press signals input sequentially by the push switch. If the difference between the fourth press signal and the third press signal is greater than a preset value, a trigger signal is generated. The main control board receives the trigger signal but does not generate the door opening command.

[0039] In some embodiments, the push switch includes a button and a spring sleeved on the button, the button passing through the housing and being interference-fitted with the door;

[0040] The preset value is determined based on the compensation displacement value between the button and the door.

[0041] In some embodiments, the compensation displacement value is less than the maximum travel of the button and greater than the upper limit of the error between the door and the housing.

[0042] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the published drawings without creative effort.

[0044] Figure 1 is a three-dimensional structural diagram of the cabinet provided in this application.

[0045] Figure 2 is a three-dimensional schematic diagram of Figure 1, in which the door is omitted, provided in this application.

[0046] Figure 3 is a front view of the cabinet provided in this application.

[0047] Figure 4 is a cross-sectional view at point AA in Figure 3 provided in this application.

[0048] Figure 5 is a magnified view of part B in Figure 3 provided in this application.

[0049] Figure 6 is a magnified view of part C in Figure 5 provided in this application.

[0050] Figure 7 is a three-dimensional schematic diagram of the door provided in this application.

[0051] Figure 8 is a partial schematic diagram of the engagement between the trigger rod and the trigger surface provided in this application.

[0052] Figure 9 is a perspective view of the push switch provided in this application.

[0053] Figure 10 is a perspective view of the push switch provided in this application from another angle.

[0054] Figure 11 is a flowchart of the cabinet setting method based on a push-button switch provided in this application.

[0055] Figure 12 is a structural schematic diagram of the refrigerator provided in this application.

[0056] Figure 13 is another structural schematic diagram of the refrigerator provided in this application.

[0057] Figure 14 is another structural schematic diagram of the refrigerator provided in this application.

[0058] Figure 15 is a structural schematic diagram of the push-button switch assembly provided in this application.

[0059] Figure 16 is a flowchart illustrating the automatic door opening control method for the refrigerator provided in this application.

[0060] The component reference numerals are as follows: 100, cabinet; 10, box; 11, first surface; 111, through hole; 12, switch bracket; 20, door; 21, trigger surface; 211, trigger protrusion; 30, push-button switch; 31, housing; 311, first cavity; 312, second cavity; 313, threaded component; 32, trigger rod; 321, abutment surface; 33, elastic component; 34, support plate; 341, mounting base; 342, trigger base; 35, circuit board; 40, main control board; 200, cabinet setting method based on push-button switch; 300, pressure sensor; 400, magnetic sensor; 500, push-button switch assembly; 501, button; 502, spring. Detailed Implementation

[0061] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0062] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0066] As shown in Figures 1 to 10, this application provides a cabinet 100 based on a push-button switch, which can be a household appliance such as a refrigerator or a steam oven. In this embodiment, a refrigerator is used as an example to illustrate the structure and principle of the cabinet 100 based on the push-button switch.

[0067] Specifically, as shown in Figures 1 to 2, 4, and 5, the refrigerator provided in this embodiment includes a cabinet 10, a door 20, and a push switch 30. The door 20 is mounted on the cabinet 10 and has a trigger surface 21. The surface of the cabinet 10 facing the door 20 is defined as the first surface 11 (that is, the surface of the cabinet 10 closest to the door 20 is the first surface 11). The push switch 30 includes a housing 31, a trigger rod 32, and an elastic element 33. The housing 31 is mounted on the cabinet 10, and the elastic element 33 is mounted on the housing 31. One end of the trigger rod 32 abuts against the elastic element 33, and the other end protrudes from the first surface 11, with its end face defined as the abutment surface 321. The abutment surface 321 can abut against the trigger surface 21 as the trigger rod 32 is subjected to force, thereby triggering the push switch 30. The maximum stroke of the trigger rod 32 is Z, the actual value between the first surface 11 and the trigger surface 21 is X, the theoretical value between the first surface 11 and the trigger surface 21 is X0, and the upper deviation between X and X0 is m. The compensation displacement value a between the abutment surface 321 and the trigger surface 21 satisfies: m < a < Z.

[0068] This configuration ensures that the compensation displacement value 'a' between the contact surface 321 and the trigger surface 21 satisfies: m < a < Z. Thus, when X = X0 + m, the compensation displacement value 'a' can compensate for the assembly deviation between the housing 10 and the door 20. Furthermore, since m < a, an interference fit between the contact surface 321 and the trigger surface 21 is always maintained. Simultaneously, a < Z ensures that the elastic element 33 can be properly compressed during triggering (overpressure protection). In other words, by ensuring m < a < Z, the push switch 30 can be effectively triggered, guaranteeing the normal opening of the door 20 and eliminating the push-button malfunction caused by assembly deviations.

[0069] It needs to be explained that the lower deviation n of X0 is X0+m≥X≥X0-n. When X=X0-n, in actual assembly, door 20 is relatively close to housing 10. The trigger surface 21 and the abutment surface 321 are already in contact, and no compensation a is needed. At the same time, when X=X0+m, in actual assembly, door 20 is relatively far away from housing 10. To ensure that pressing door 20 produces a trigger signal, there is an interference fit between trigger surface 21 and abutment surface 321, and Z>0, therefore a<Z.

[0070] In one embodiment, a trigger protrusion 211 is provided on the trigger surface 21, which is used to cooperate with the trigger rod 32. In this way, the trigger protrusion 211 further compensates for the distance between the door 20 and the housing 10, so as to ensure that the trigger surface 21 and the abutment surface 321 are in an interference fit during the pressing process, so that the push switch 30 can be effectively triggered.

[0071] Furthermore, when the door 20 is pressed, the maximum distance that the door 20 can move is L, and the theoretical distance between the first surface 11 and the abutment surface 321 is Y. L, Y, and Z satisfy the relationship: Z>Y>L. It should be explained that due to a deviation in X0, to ensure that pressing the door 20 will activate the push switch 30 after actual assembly, the trigger surface 21 and the abutment surface 321 are designed with an interference fit. The interference value (compensation displacement value) is a (a=Y-X0). That is, during assembly, when the door 20 closes, it pushes the trigger rod 32 a certain distance, theoretically a value, further compressing the elastic element 33. Afterwards, pressing the door 20 pushes the trigger rod 32, causing the push switch 30 to sense the pressure and output a signal, thus enabling the door 20 to open normally.

[0072] In one embodiment, as shown in FIG8, the housing 31 is mounted to the housing 10 via a threaded fitting 313. This facilitates the disassembly and installation of the housing 31. Here, the threaded fitting 313 is configured as a bolt or screw. Of course, it is not limited to this; the installation method between the housing 31 and the housing 10 can also be a snap-fit ​​connection.

[0073] Furthermore, as shown in Figures 5 and 9, a switch bracket 12 is provided on the housing 10, and the switch bracket 12 has the aforementioned first surface 11; wherein, a through hole 111 is provided on the first surface 11, and one end of the trigger rod 32 having an abutment surface 321 protrudes through the through hole 111 for cooperating with the trigger surface 21.

[0074] In one embodiment, the maximum stroke Z of the trigger rod 32 and the maximum compression M of the elastic element 33 satisfy the condition: Z ≤ M. With this configuration, the elastic element 33 can still be compressed when the trigger rod 32 is at its maximum stroke. This ensures that the trigger rod 32 can be effectively triggered and operate normally.

[0075] Please continue referring to Figure 5. The push-button switch 30 also includes a support plate 34 and a circuit board 35. The support plate 34 is housed in the housing 31 and divides the interior of the housing 31 into a first cavity 311 and a second cavity 312. The circuit board 35 is located in the first cavity 311. The end of the elastic member 33 away from the trigger rod 32 acts on the support plate 34. In this way, the circuit board 35 is housed in the separate first cavity 311 divided by the support plate 34, so that the circuit board 35 can be individually protected.

[0076] Furthermore, a mounting base 341 is provided on the support plate 34, and a trigger seat 342 is mounted on the mounting base 341. The end of the elastic element 33 away from the trigger rod 32 is sleeved on the trigger seat 342. In this way, not only can the installation and limiting of the elastic element 33 be realized, but also through the transmission of the mounting base 341, the trigger seat 342 and the elastic element 33, excessive contact between the trigger rod 32 and the circuit board 35 is avoided, that is, damage to the switch 30 is avoided when the door is closed with excessive force.

[0077] As shown in Figure 11, this application also provides a cabinet setting method 200 based on a push-button switch, the setting method including:

[0078] Step S1: Obtain the maximum travel Z of the trigger lever;

[0079] Step S2: Determine the actual value X between the first surface 11 and the trigger surface 21 after the door 20 is installed into the housing 10; and, based on the actual value X and the theoretical value X0 between the first surface 11 and the trigger surface 21, obtain the upper deviation m between X and X0.

[0080] Step S3: Determine the compensation displacement value a between the contact surface 321 and the trigger surface 21, and make the compensation displacement value a satisfy: m < a < Z.

[0081] Thus, by ensuring that the compensation displacement value 'a' between the contact surface 321 and the trigger surface 21 satisfies m < a < Z, when X = X0 + m, the assembly deviation between the housing 10 and the door 20 can be compensated by the compensation displacement value 'a'. Furthermore, since m < a, an interference fit between the contact surface 321 and the trigger surface 21 is always maintained. Simultaneously, a < Z ensures that the elastic element 33 can be properly compressed during triggering (overpressure protection). In other words, by ensuring m < a < Z, the push switch 30 can be effectively triggered, guaranteeing the normal opening of the door 20 and eliminating the push-button malfunction caused by assembly deviation. It should be noted that there is no specific order between steps S1 and S2.

[0082] For example, Z = 6.5mm, Y = 6mm, X0 = 4mm, m = 1mm, n = 1mm, and the value of a can be 3mm, 3.5mm, etc. Similarly, Z = 5mm, Y = 4.5mm, X0 = 3mm, m = 1mm, n = 1mm, and the value of a can be 2.5mm, 3mm, etc. Here, the values ​​of m, a, Z, and X are all dimensions along the axis of the trigger rod 32.

[0083] In the refrigerator industry, with the development of technology and the improvement of automation levels, more and more refrigerators are being researched in the direction of improving their intelligence level. Among them, automatic door opening is a common function in intelligent control.

[0084] In related technologies, a pressure sensor and a push-button switch assembly are installed on the refrigerator body. The user presses the door, causing the push-button switch assembly to apply pressure to the pressure sensor, thereby triggering the refrigerator to open automatically. However, in practical applications, the refrigerator may be subjected to impacts or other factors that cause it to trigger falsely.

[0085] This application provides a refrigerator, as shown in Figures 12-15. The refrigerator includes a cabinet 10, a door 20, and a main control board 40. The cabinet 10 is equipped with a pressure sensor 300, a magnetic sensor 400, and a push-button switch assembly 500. The push-button switch assembly 500 is correspondingly arranged with the pressure sensor 300. The pressure sensor 300 is used to sense the pressing signal input by the push-button switch assembly 500, and the magnetic sensor 400 is used to detect the open / closed state of the door 20.

[0086] The refrigerator in this application embodiment can be a single-door refrigerator or a double-door refrigerator. It can be a refrigerator that only includes a refrigerator compartment or a freezer compartment, or a refrigerator that includes both a refrigerator compartment and a freezer compartment.

[0087] When the door 20 is in the closed state, the pressure sensor 300 senses the user pressing the door 20, and the first pressing signal and the second pressing signal are sequentially input through the pressing switch assembly 500. Based on the first pressing signal and the second pressing signal, it is determined whether to generate a trigger signal. If so, the main control board 40 generates an opening command based on the trigger signal to control the door 20 to open.

[0088] When the door 20 changes from the open state to the closed state, the pressure sensor 300 senses the third and fourth press signals input sequentially by the push switch assembly 500. If the difference between the fourth press signal and the third press signal is greater than a preset value, a trigger signal is generated. The main control board 40 receives the trigger signal but does not generate the door opening command.

[0089] In actual assembly, there is a deviation between the door body 20 and the housing 10. If the installation gap is too large, the button 501 cannot contact the pressure sensor 300 when the user presses the door body 20, thus failing to trigger the door to open. If the installation gap is too small, the button 501 will trigger the pressure sensor 300 and cause the door to open even when the user has not pressed the door body 20. Both of these situations will result in a poor user experience.

[0090] In some embodiments, as shown in FIG15, the push-button switch assembly 500 includes a button 501 and a spring 502 sleeved on the button 501. The button 501 passes through the housing 10 and is interference-fitted with the door 20.

[0091] The preset value is determined based on the compensation displacement value between the button 501 and the door 20.

[0092] The compensation displacement value is less than the maximum travel of the button 501 and greater than the upper limit of the error between the door 20 and the box 10, thereby avoiding the above two situations and improving the user experience.

[0093] As shown in Figure 16, this application embodiment provides an automatic door opening control method for a refrigerator, applied to the aforementioned refrigerator, specifically including the following steps:

[0094] S402, when the door is in the closed state, the pressure sensor senses the user pressing the door, and determines whether to generate a trigger signal based on the first pressing signal and the second pressing signal sequentially input by the pressing switch assembly.

[0095] The first and second pressing signals can be understood as two pressure signals input by the user during a single pressing of the door body 20, which can be the maximum and minimum pressure signals during the pressing process.

[0096] The trigger signal can be a low-level signal; under normal conditions, the pressure sensor 300 outputs a high-level signal.

[0097] S404, if so, the main control board generates an opening command based on the trigger signal to control the door to open.

[0098] In the above embodiment, the pressure sensor 300 determines whether to generate a trigger signal based on the first pressing signal and the second pressing signal. Only when the door opening conditions are met will a trigger signal be generated to control the door 20 to open, thereby avoiding accidental triggering of the door 20 to open and improving the user experience.

[0099] Specifically, determining whether to generate a trigger signal based on the first press signal and the second press signal includes:

[0100] If the difference between the second pressing signal and the first pressing signal is greater than a preset value, the trigger signal is generated; otherwise, the trigger signal is not generated.

[0101] Understandably, in the event of a false trigger, even if the pressure sensor 300 receives the first and second pressing signals, the difference between the second and first pressing signals is small and does not meet the conditions for automatic door opening, so the door 20 will not be falsely triggered to open.

[0102] In this embodiment, the automatic door opening conditions are set based on the difference between the second pressing signal and the first pressing signal, thereby avoiding false triggering.

[0103] Since the pressure sensor 300 is subjected to force by the push switch assembly 500 when the door 20 is in the closed state, it may still cause the door 20 to be falsely triggered to open.

[0104] In some embodiments, to solve the above-mentioned technical problems, it is necessary to further define the automatic door opening conditions. Specifically, when the door 20 changes from the open state to the closed state, the pressure sensor 300 senses the third and fourth press signals sequentially input by the push-button switch assembly 500. If the difference between the fourth press signal and the third press signal is greater than a preset value, a trigger signal is generated; the main control board 40 receives the trigger signal but does not generate the door opening command.

[0105] When the door 20 changes from the open state to the closed state, it can be understood that the pressure sensor 300 is pressed for the first time. In this case, even if the main control board 40 receives the trigger signal, it will not generate the door opening command. The door opening command will only be generated when the pressure sensor 300 is pressed for the second time, that is, when it is pressed while in the closed state, so as to avoid the door 20 being accidentally triggered to open.

[0106] To prevent the door 20 from being unresponsive or accidentally triggered, in some embodiments, it is necessary to limit the compensation displacement value 'a' between the button 501 and the door 20. As shown in Figure 3, assuming the theoretical distance between the housing 10 and the door 20 is X0, the actual distance is X, the upper limit of the installation deviation of the door 20 is m, the lower limit is n, and the maximum travel of the button 501 is Z.

[0107] When X = X0 + m, in actual assembly, door 20 is far from housing 10. To ensure a trigger signal when door 20 is pressed, a compensation displacement value a needs to be set for compensation. Since pressure sensor 300 needs to be under force when door 20 is closed, compensation displacement value a > upper limit value m, therefore compensation displacement value a < maximum stroke Z of button 501.

[0108] When X = X0 - n, in actual assembly, door 20 is close to housing 10. Since pressure sensor 300 is already under force when door 20 is closed, no compensation for displacement value a is required.

[0109] In summary, the compensation displacement value a > the upper limit value m, and the compensation displacement value a < the maximum travel of button 501.

[0110] In one example embodiment, the maximum travel Z of button 501 is 6.5 mm, the theoretical distance X0 between housing 10 and door 20 is 4 mm, the upper limit m is 1 mm, the lower limit n is 1 mm, and the compensation displacement value a is 3 mm, which conforms to the setting of compensation displacement value a.

[0111] In some embodiments, the main control board 40 determines the opening and closing state of the door 20 based on the magnetic signal of the magnetic sensor 400.

[0112] Specifically, when the magnetic sensor 400 is determined to be in a closed state based on the magnetic signal, the door 20 is determined to be in an open state; when the magnetic sensor 400 is determined to be in an open state based on the magnetic signal, the door 20 is determined to be in a closed state.

[0113] The following description assumes that the initial state of the door 20 is open and describes the entire process of the refrigerator automatically opening.

[0114] When the door 20 is in the open state, the magnetic sensor 400 cannot detect the door 20 and is in the closed state. The main control board 40 determines that the magnetic sensor 400 is in the closed state and thus can determine that the door 20 is in the open state.

[0115] During the process of the door 20 changing from the open state to the closed state, the pressure sensor 300 senses the third press signal F3 and the fourth press signal F4 sequentially input by the push-button switch assembly 500. If the difference between the fourth press signal F4 and the third press signal F3 is greater than a preset value, a trigger signal is generated. The main control board 40 receives the trigger signal at this time, but does not generate an opening command.

[0116] When the door 20 is pressed by the user, the pressure sensor 300 senses the user pressing the door 20 and sequentially inputs the first pressing signal and the second pressing signal through the pressing switch assembly 500. Based on the first pressing signal and the second pressing signal, a trigger signal is generated. The main control board 40 generates an opening command based on the trigger signal to control the door 20 to open, thereby realizing the automatic opening of the door 20.

[0117] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A method of setting a cabinet based on a push switch, characterized by, The cabinet body comprises a cabinet, a door body and a press switch. The door body is installed on the cabinet and is provided with a trigger surface. The surface of the cabinet closest to the door body is defined as a first surface. The press switch comprises a shell, a trigger rod and an elastic element. The shell is installed on the cabinet. The elastic element is installed on the shell. One end of the trigger rod abuts against the elastic element. The other end of the trigger rod protrudes from the first surface and the end surface thereof is defined as an abutting surface. The abutting surface can abut against the trigger surface under the force of the trigger rod to trigger the press switch. The cabinet body setting method based on the press switch comprises the following steps: obtaining the maximum stroke Z of the trigger rod; determining the actual value X between the first surface and the trigger surface after the door body is installed on the cabinet; and obtaining the upper deviation m between X and X0 according to the actual value X and the theoretical value X0 between the first surface and the trigger surface. determining the compensation displacement value a between the abutting surface and the trigger surface, and ensuring that the compensation displacement value a satisfies m < a < Z.

2. The push switch-based cabinet setting method according to claim 1, wherein The trigger surface is provided with a trigger protrusion for matching the trigger rod.

3. The push switch-based cabinet setting method according to claim 1 or 2, wherein, When the door body is pressed, the maximum distance that the door body can move relative to the cabinet is L, and the theoretical distance between the first surface and the abutting surface is Y. The relationship between L, Y and Z satisfies Z > Y > L.

4. A refrigerator characterized by comprising: The refrigerator comprises a cabinet, a door body and a press switch. The door body is installed on the cabinet and is provided with a trigger surface. The surface of the cabinet closest to the door body is defined as a first surface. The press switch comprises a shell, a trigger rod and an elastic element. The shell is installed on the cabinet. The elastic element is installed on the shell. One end of the trigger rod abuts against the elastic element. The other end of the trigger rod protrudes from the first surface and the end surface thereof is defined as an abutting surface. The abutting surface can abut against the trigger surface under the force of the trigger rod to trigger the press switch. The maximum stroke of the trigger rod is Z. The actual value between the first surface and the trigger surface is X. The theoretical value between the first surface and the trigger surface is X0. The upper deviation between X and X0 is m. The compensation displacement value a between the abutting surface and the trigger surface satisfies m < a < Z.

5. The refrigerator of claim 4, wherein, The trigger surface is provided with a trigger protrusion for matching the trigger rod. 6.The refrigerator of claim 4, wherein, When the door body is pressed, the maximum distance that the door body can move relative to the cabinet is L, and the theoretical distance between the first surface and the abutting surface is Y. The relationship between L, Y and Z satisfies Z > Y > L.

7. The refrigerator of claim 4, wherein, The press switch further comprises a support plate and a circuit board. The support plate is accommodated in the shell and divides the shell into a first cavity and a second cavity. The circuit board is located in the first cavity. One end of the elastic element away from the trigger rod acts on the support plate.

8. The refrigerator of claim 7, wherein, The support plate is provided with a mounting seat. A trigger seat is installed on the mounting seat. One end of the elastic element away from the trigger rod is sleeved on the trigger seat.

9. The refrigerator of claim 4, wherein, The maximum stroke Z of the trigger rod and the maximum compression amount M of the elastic element satisfy Z ≤ M. 10.The refrigerator of claim 4, wherein, The box is provided with a switch support, and a first surface is formed on the switch support; The first surface is provided with a through hole, and one end of the trigger lever with an abutting surface passes through the through hole, so as to cooperate with the trigger surface.

11. An automatic door opening control method of a refrigerator, the refrigerator comprising a cabinet, a door body and a main control board, the cabinet being provided with a pressure sensor, a magnetic sensor and a press switch assembly, the press switch assembly being arranged correspondingly to the pressure sensor, the pressure sensor being used for sensing a press signal input by the press switch assembly, and the magnetic sensor being used for detecting an opening and closing state of the door body, characterized in that, The method comprises: When the door body is in a closed state, the pressure sensor senses that a user presses the door body, and a first pressing signal and a second pressing signal input by the pressing switch assembly in sequence are input, and whether a trigger signal is generated is determined based on the first pressing signal and the second pressing signal; If yes, the main control board generates an open door instruction to control the door body to open based on the trigger signal.

12. The method of claim 11, wherein, The determination of whether the trigger signal is generated based on the first pressing signal and the second pressing signal comprises: If the difference between the second pressing signal and the first pressing signal is greater than a preset value, the trigger signal is generated, otherwise, the trigger signal is not generated.

13. The method of claim 11, wherein, When the door body is in a closed state, the pressure sensor is stressed by the pressing switch assembly, and the method further comprises: When the door body is in a closed state, the pressure sensor is stressed by the pressing switch assembly, and the method further comprises: When the door body is in a closed state, the pressure sensor is stressed by the pressing switch assembly, and the method further comprises:

14. The method of claim 13, wherein, The pressing switch assembly comprises a button and a spring sleeved on the button, and the button passes through the box and is in interference with the door body; The preset value is determined based on a compensation displacement value of the button and the door body.

15. The method of claim 14, wherein, The compensation displacement value is less than the maximum stroke of the button and greater than an upper limit error value between the door body and the box.

16. The method of claim 11, wherein, The main control board determines the opening and closing state of the door body based on the magnetic sensitive signal of the magnetic sensitive sensor; When it is determined based on the magnetic sensitive signal that the magnetic sensitive sensor is in a closed state, it is determined that the door body is in an open state; when it is determined based on the magnetic sensitive signal that the magnetic sensitive sensor is in an open state, it is determined that the door body is in a closed state.

17. A refrigerator characterized by comprising: The method comprises: When the door body is in a closed state, the pressure sensor senses that a user presses the door body, and a first pressing signal and a second pressing signal input by the pressing switch assembly in sequence are input, and whether a trigger signal is generated is determined based on the first pressing signal and the second pressing signal; If yes, the main control board generates an open door instruction to control the door body to open based on the trigger signal. 18.The refrigerator of claim 17, wherein, When the door body is from an open state to a closed state, the pressure sensor senses third and fourth press signals inputted by the press switch assembly in sequence, and generates a trigger signal when a difference between the fourth press signal and the third press signal is greater than a preset value; The main control board receives the trigger signal and does not generate the open door instruction.

19. The refrigerator of claim 18, wherein, The press switch assembly comprises a button and a spring sleeved on the button, and the button penetrates through the box body and is in interference with the door body. The preset value is determined based on a compensation displacement value of the button and the door body.

20. The refrigerator of claim 19, wherein, The compensation displacement value is less than a maximum stroke of the button and greater than an error upper limit value between the door body and the box body.

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