Dish-washing machine door and embedded dish-washing machine

Abstract

The invention discloses a dish-washing machine door and an embedded dish-washing machine, and belongs to the technical field of dish-washing machines. The dish-washing machine door comprises a door shell, and the door shell defines the appearance structure of the dish-washing machine door; the knocking sensor is fixed in the inner space defined by the door shell, and the knocking sensor outputs a detection signal by responding to vibration generated by knocking the door shell. The knocking sensor is arranged in the door shell to detect the knocking action of a user, and the dish washing machine can execute the corresponding action according to the detection signal output by the knocking sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular to a dishwasher door and an embedded dishwasher. Background Art

[0002] Current dishwashers are usually controlled by buttons. When a user presses a button, the button sends a button signal to the dishwasher, and the dishwasher performs a corresponding action according to the button signal. However, with the continuous upgrading and improvement of dishwashers, there is gradually a function of knocking on the dishwasher to make it perform a corresponding action. However, how to control electrical equipment by knocking on electrical equipment, therefore, how to detect the vibration signal when knocking on the dishwasher is a technical problem that urgently needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a dishwasher door and an embedded dishwasher to solve the above problems.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A dishwasher door, comprising:

[0006] A door outer shell, wherein the door outer shell forms an outer structure of a dishwasher door;

[0007] A knock sensor is fixed in the inner space surrounded by the door outer shell, and the knock sensor outputs a detection signal by responding to the vibration generated by knocking the door outer shell.

[0008] Preferably, the knock sensor is fixed to the front inner wall of the door outer shell.

[0009] Preferably, the front inner wall of the door shell has a connecting column, and the knock sensor is fixedly connected to the connecting column.

[0010] Preferably, the knock sensor is closely attached to the front inner wall of the door shell.

[0011] Preferably, the knock sensor comprises:

[0012] A housing, wherein a cavity is formed inside the housing;

[0013] A piezoelectric film, wherein the piezoelectric film is disposed in the cavity;

[0014] A PCBA board, wherein the PCBA board is confined in the cavity, and the PCBA board presses the piezoelectric film onto the bottom surface of the cavity so that the piezoelectric film is in contact with the bottom surface of the cavity;

[0015] The piezoelectric film is configured to generate a piezoelectric signal according to the vibration of the housing, the PCBA board is electrically connected to the piezoelectric film, and the PCBA board is configured to process the piezoelectric signal to generate a detection signal and output the detection signal.

[0016] Preferably, a vibration clearance groove is provided at the bottom of the cavity, and the vibration clearance groove corresponds to a portion of the piezoelectric film.

[0017] Preferably, a pin is provided at one end of the piezoelectric film, and the piezoelectric film is electrically connected to the PCBA board through the pin. The pin is bent downward and forms a certain angle with the PCBA board. The PCB board applies force to the pin to press the piezoelectric film against the bottom surface of the cavity.

[0018] Preferably, the angle between the pin and the PCBA board is 1° to 20°.

[0019] An embedded dishwasher, comprising a dishwasher door, a housing, a door lock and a controller as described above;

[0020] The box body is provided with a containing space for containing and cleaning objects;

[0021] The dishwasher door is disposed on the housing and is used to open and close the open surface of the accommodating space;

[0022] The door lock is arranged on the housing to lock, unlock and push out the dishwasher door;

[0023] In a dormant state of the dishwasher, the controller controls the door lock to unlock and push out the dishwasher door based on a detection signal output by the knock sensor.

[0024] One embodiment of the present invention has the following beneficial effects:

[0025] 1. A knock sensor is set in the door shell to detect the user's knocking action. When the user knocks on the dishwasher door, the door shell will vibrate. The knock sensor detects the vibration of the door shell to determine the user's knocking action and outputs a detection signal. The dishwasher can perform corresponding actions according to the detection signal output by the knock sensor;

[0026] 2. By setting the knock sensor on the door shell, since the door shell vibrates directly due to the user's knocking action, the path for the vibration of the door shell to be transmitted to the knock sensor is short and the vibration attenuation is reduced. Therefore, the vibration can be better transmitted to the knock sensor, thereby enabling the knock sensor to detect the user's knocking action more sensitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of a dishwasher door according to one embodiment of the present invention;

[0029] Figure 2 is a partial cross-sectional structural schematic diagram of a dishwasher door according to one embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the installation structure of a door housing and a knock sensor according to one embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the three-dimensional structure of a knock sensor according to one embodiment of the present invention;

[0032] Figure 5 is a schematic cross-sectional structural diagram of a knock sensor according to one embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the main structure of a PCBA board in one embodiment of the present invention;

[0034] Figure 7 It is a bottom view structural schematic diagram of a PCBA board in one embodiment of the present invention;

[0035] Figure 8 is a schematic diagram of the three-dimensional structure of a housing of one embodiment of the present invention;

[0036] Fig. 9 is a schematic diagram of the three-dimensional structure of a built-in dishwasher according to one embodiment of the present invention;

[0037] Fig.10 is a schematic structural diagram of a built-in dishwasher of one embodiment of the present invention when the dishwasher door is closed;

[0038] Fig.11 is a schematic structural diagram of a built-in dishwasher of one embodiment of the present invention when the dishwasher door is pushed open;

[0039] In the attached drawings: 100-built-in dishwasher, 10-dishwasher door, 1-door shell, 11-connecting column, 2-knock sensor, 21-shell, 211-cavity, 212-vibration clearance groove, 22-piezoelectric film, 221-pin, 23-PCBA board, 20-box. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0044] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] A dishwasher door 10 of this embodiment, such as Figure 1-8 As shown, including:

[0046] A door outer shell 1, wherein the door outer shell 1 forms an outer structure of a dishwasher door 10;

[0047] The knock sensor 2 is fixed in the inner space surrounded by the door outer shell 1 , and the knock sensor 2 responds to the vibration generated by knocking the door outer shell 1 and outputs a detection signal.

[0048] Since dishwashers currently generally adopt an embedded installation structure, after the dishwasher is installed, only the dishwasher door 10 is exposed to the outside, and the rest of the dishwasher is completely embedded in the cabinet or wall. Therefore, by detecting the vibration of the dishwasher door 10, it is possible to accurately determine whether the user knocks on the dishwasher. The present invention sets a knock sensor 2 in the door shell 1 to detect the user's knocking action. When the user knocks on the dishwasher door 10, the door shell 1 will vibrate. The knock sensor 2 detects the vibration of the door shell 1 to determine the user's knocking action and outputs a detection signal. The dishwasher can perform corresponding actions according to the detection signal output by the knock sensor 2, such as opening the dishwasher door 10, starting cleaning, pausing cleaning or starting disinfection, etc., which are not specifically limited here. By setting the knock sensor 2 on the door outer shell 1, since the door outer shell 1 vibrates directly depending on the user's knocking action, the path for the vibration of the door outer shell 1 to be transmitted to the knock sensor 2 is short and the vibration attenuation is reduced. Therefore, the vibration can be better transmitted to the knock sensor 2, so that the knock sensor 2 can detect the user's knocking action more sensitively; it can be understood that since various components will be installed inside the door outer shell 1, the knock sensor 2 can be directly or indirectly connected to the door outer shell 1, that is, the knock sensor 2 is directly fixed to the door outer shell 1 or the knock sensor 2 is connected to the door outer shell 1 through a bracket.

[0049] Furthermore, the knock sensor 2 is fixed to the front inner wall of the door outer shell 1 .

[0050] Since the rear side of the door shell 1 is the inner tank, when the dishwasher door 10 is closed, the inner tank is hidden in the dishwasher. Therefore, the front side of the dishwasher is the user knocking area. When the user knocks, the vibration intensity of the front side wall of the door shell 1 is relatively large. Therefore, fixing the knock sensor 2 to the front inner wall of the door shell 1 can better detect the user's knocking action.

[0051] Furthermore, if Figure 2 and Figure 3 As shown, the front inner wall of the door shell 1 has a connecting column 11 , and the knock sensor 2 is fixedly connected to the connecting column 11 .

[0052] By providing the connecting column 11, the knock sensor 2 can be conveniently fixedly connected to the door shell 1. The knock sensor 2 and the connecting column 11 can be fixed by screw connection, snap connection, riveting or welding.

[0053] Furthermore, the knock sensor 2 is closely attached to the front inner wall of the door outer shell 1 .

[0054] This arrangement can create a larger contact area between the knock sensor 2 and the door outer shell 1 , so that the vibration of the door outer shell 1 can be better transmitted to the knock sensor 2 , thereby improving the detection sensitivity of the knock sensor 2 .

[0055] Furthermore, if Figure 4-8 As shown, the knock sensor 2 includes:

[0056] A housing 21, wherein a cavity 211 is formed inside the housing 21;

[0057] A piezoelectric film 22, wherein the piezoelectric film 22 is disposed in the cavity 211;

[0058] A PCBA board 23, wherein the PCBA board 23 is confined in the cavity 211, and the PCBA board 23 presses the piezoelectric film 22 on the bottom surface of the cavity 211 so that the piezoelectric film 22 is in contact with the bottom surface of the cavity 211;

[0059] The piezoelectric film 22 is configured to generate a piezoelectric signal according to the vibration of the housing 21 , the PCBA board 23 is electrically connected to the piezoelectric film 22 , and the PCBA board 23 is configured to process the piezoelectric signal to generate a detection signal and output the detection signal.

[0060] When external vibration is transmitted to the shell 21, since the piezoelectric film 22 is in contact with the bottom surface of the cavity 211, the vibration of the shell 21 is transmitted to the piezoelectric film 22 through the bottom surface of the cavity 211. When the piezoelectric film 22 vibrates, the piezoelectric film 22 generates a piezoelectric signal. The PCBA board 23 processes the electrical signal into a detection signal and transmits the detection signal to the controller. The present invention presses the piezoelectric film 22 against the bottom surface of the cavity 211 through the PCBA board 23, which can make the structure of the knock sensor 2 more compact and the overall body The volume is smaller, which is beneficial to reducing the space occupied by the knock sensor 2 in the inner space of the dishwasher door 10; in addition, the piezoelectric film 22 can be directly welded to the PCBA board 23, thereby reducing the use of wires and lowering the cost. Since the piezoelectric film 22 is directly connected to the PCBA board 23, the signal transmission distance is reduced, so the signal interference and loss are smaller; not only that, the present invention places both the piezoelectric film 22 and the PCBA board 23 in the cavity 211 of the shell 21, so that the knock sensor 2 has an integrated structure, which is more convenient to install.

[0061] Furthermore, a vibration clearance groove 212 is provided at the bottom of the cavity 211 , and the vibration clearance groove 212 corresponds to a portion of the piezoelectric film 22 .

[0062] By setting the clearance groove, part of the piezoelectric film 22 can be suspended in the clearance groove, and the other part can be attached to the bottom surface of the cavity 211. In this way, the vibration of the shell 21 can be transmitted to the piezoelectric film 22 through the bottom surface of the cavity 211, so that the piezoelectric film 22 generates a piezoelectric signal, and the piezoelectric film 22 will not be completely compressed and unable to respond to the vibration of the shell 21, so that the vibration caused by knocking can be detected more accurately.

[0063] Furthermore, a pin 221 is provided at one end of the piezoelectric film 22, and the piezoelectric film 22 is electrically connected to the PCBA board 23 through the pin 221. The pin 221 is bent downward and forms a certain angle α with the PCBA board 23. The PCB board applies force to the pin 221 to press the piezoelectric film 22 against the bottom surface of the cavity 211.

[0064] The bottom surface of the PCBA board 23 has a pad corresponding to the pin 221. The piezoelectric film 22 is welded to the corresponding pad through the pin 221 to achieve electrical and mechanical connection with the PCBA board 23. At this time, the piezoelectric film 22 can not only transmit electrical signals with the PCBA board 23, but also form a certain mechanical connection structure. It should be pointed out that the pin 221 has a certain bending angle. When the PCBA board 23 is installed in the cavity 211, the pin 221 can be supported on the bottom surface of the cavity 211, and the PCBA board 23 applies downward pressure to the pin 221, thereby pressing the piezoelectric film 22 on the bottom surface of the cavity 211, so that the piezoelectric film 22 is in contact with the bottom surface of the cavity 211. This can effectively solve the problem that the bottom surface of the PCBA board 23 directly presses the piezoelectric film 22 too tightly or the piezoelectric film 22 cannot be fully in contact with the bottom surface of the cavity 211, thereby affecting the detection accuracy. It can be understood that the piezoelectric film 22 needs to be deformed to produce The piezoelectric film 22 is very sensitive. Since the thickness of the PCBA board 23 has a certain processing error, if the thickness of the PCBA board 23 is too large, the piezoelectric film 22 is firmly pressed against the bottom surface of the cavity 211, which will cause the piezoelectric film 22 to lose the space for deformation, thereby greatly reducing the accuracy of detection, or even completely failing to detect the vibration generated by the knocking; similarly, if the PCBA board 23 is too thin, the piezoelectric film 22 may not be able to fully adhere to the bottom surface of the cavity 211, and it is difficult to respond to the vibration of the shell 21, and the detection sensitivity of the vibration signal is greatly reduced. Therefore, the present invention ingeniously bends the pin 221 of the piezoelectric film 22 at a certain angle, applies force to the pin 221 through the PCBA board 23, and uses the elastic force of the pin 221 to press the piezoelectric film 22 against the bottom surface of the cavity 211. The pin 221 can absorb the processing error of the PCBA board 23, thereby sensitively and accurately responding to the vibration of the shell 21.

[0065] Furthermore, the angle α between the pin 221 and the PCBA board 23 is 1° to 20°.

[0066] When the pin 221 is made of different materials, its elasticity is different. The bending angle corresponding to the pin 221 can be set according to the specific material. It can be understood that when the angle α between the pin 221 and the PCBA board 23 is less than 1°, due to the small angle, the pin 221 is difficult to press the piezoelectric film 22 on the bottom surface of the cavity 211. When the angle α between the pin 221 and the PCBA board 23 is greater than 20°, due to the large bending angle, the solder joints between the pin 221 and the PCBA board 23 will generate greater stress, which is easy to cause desoldering; preferably, the angle α between the pin 221 and the PCBA board 23 is 3°~10°.

[0067] A built-in dishwasher 100, such as Figures 9 to 11As shown, it includes a dishwasher door 10, a housing 20, a door lock and a controller as described above;

[0068] The box body 20 is provided with a receiving space for receiving and cleaning objects;

[0069] The dishwasher door 10 is disposed on the housing 20 and is used to open and close the open surface of the accommodating space;

[0070] The door lock is disposed on the housing 20 to lock, unlock and push out the dishwasher door 10;

[0071] In the dormant state of the dishwasher, the controller controls the door lock to unlock and push out the dishwasher door 10 based on the detection signal output by the knock sensor 2 .

[0072] In actual use, when the user needs to take out items in the dishwasher, such as bowls, chopsticks, etc., he only needs to knock on the dishwasher door 10. When the dishwasher door 10 is knocked, it will vibrate, and the vibration is transmitted to the knock sensor 2 through the door shell 1. The knock sensor 2 outputs a detection signal in response to the vibration. If the dishwasher is in a dormant state at this time, the door lock is unlocked, and the door lock pushes the dishwasher door 10 open at a small angle, such as Fig.11 As shown, a user is provided with a fulcrum to open the dishwasher door 10 to a greater angle. By setting it in this way, the built-in dishwasher 100 can be free of door handles, so that the dishwasher door 10 and the surrounding cabinets have a higher integrity, and the product is more beautiful after installation; in addition, when the dishwasher is in a working state, the working state includes a cleaning state, a disinfection state, or a drying state, etc.; in order to avoid accidents, even if the user knocks on the dishwasher door 10, the controller will not send a command to the door lock to unlock and push out the dishwasher door 10. It should be pointed out that the door lock can adopt an existing door lock, such as the door lock structure disclosed in the patent with publication number CN108652555A, and the specific structure of the door lock is not within the protection scope of the present invention.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0074] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dishwasher door, characterized in that: include: A door outer shell, wherein the door outer shell forms an outer structure of a dishwasher door; A knock sensor is fixed in the inner space surrounded by the door outer shell, and the knock sensor outputs a detection signal by responding to the vibration generated by knocking the door outer shell.

2. A dishwasher door according to claim 1, characterized in that: The knock sensor is fixed to the front inner wall of the door shell.

3. A dishwasher door according to claim 2, characterized in that: The front inner wall of the door shell is provided with a connecting column, and the knock sensor is fixedly connected to the connecting column.

4. A dishwasher door according to claim 2, characterized in that: The knock sensor is closely attached to the front inner wall of the door shell.

5. The dishwasher door according to claim 1, characterized in that: The knock sensor comprises: A housing, wherein a cavity is formed inside the housing; A piezoelectric film, wherein the piezoelectric film is disposed in the cavity; A PCBA board, wherein the PCBA board is confined in the cavity, and the PCBA board presses the piezoelectric film onto the bottom surface of the cavity so that the piezoelectric film is in contact with the bottom surface of the cavity; The piezoelectric film is configured to generate a piezoelectric signal according to the vibration of the housing, the PCBA board is electrically connected to the piezoelectric film, and the PCBA board is configured to process the piezoelectric signal to generate a detection signal and output the detection signal.

6. A dishwasher door according to claim 5, characterized in that: A vibration clearance groove is provided at the bottom of the cavity, and the vibration clearance groove corresponds to a portion of the piezoelectric film.

7. A dishwasher door according to claim 5, characterized in that: A pin is provided at one end of the piezoelectric film, and the piezoelectric film is electrically connected to the PCBA board through the pin. The pin is bent downward and forms a certain angle with the PCBA board. The PCB board applies force to the pin to press the piezoelectric film on the bottom surface of the cavity.

8. A dishwasher door according to claim 7, characterized in that: The angle between the pin and the PCBA board is 1° to 20°.

9. A built-in dishwasher, characterized in that: A dishwasher door, a cabinet, a door lock and a controller as described in any one of claims 1 to 7; The box body is provided with a containing space for containing and cleaning objects; The dishwasher door is disposed on the housing and is used to open and close the open surface of the accommodating space; The door lock is arranged on the housing to lock, unlock and push out the dishwasher door; In a dormant state of the dishwasher, the controller controls the door lock to unlock and push out the dishwasher door based on a detection signal output by the knock sensor.

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