Dish-washing machine door and embedded dish-washing machine

Abstract

The utility model 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, a door cover and a door cover, 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. According to the utility model, the knocking sensor is arranged in the door shell to detect the knocking action of a user, and the dish washing machine can execute corresponding action according to the detection signal output by the knocking sensor.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a dishwasher door and an embedded dishwasher. Background Technology

[0002] Current dishwashers are typically controlled by buttons. When a user presses a button, the button sends a signal, and the dishwasher performs the corresponding action. However, with the continuous upgrading and improvement of dishwashers, functions that allow the dishwasher to perform corresponding actions by tapping it have gradually emerged. However, how to control an electrical appliance by tapping it, and therefore how to detect the vibration signal when the dishwasher is tapped, is a technical problem that urgently needs to be solved. Utility Model Content

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

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A dishwasher door includes:

[0006] Door shell, which forms the outer shape of the dishwasher door;

[0007] A knocking sensor is fixed in the internal space enclosed by the door shell. The knocking sensor outputs a detection signal in response to the vibration generated by knocking on the door shell.

[0008] Preferably, the knocking sensor is fixed to the inner front wall of the door housing.

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

[0010] Preferably, the tapping sensor is attached to the inner front wall of the door housing.

[0011] Preferably, the tapping sensor includes:

[0012] A housing, the interior of which is formed a cavity;

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

[0014] PCBA board, wherein the PCBA board is confined within 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 based on the vibration of the housing. The PCBA board is electrically connected to the piezoelectric film and is configured to process the piezoelectric signal to generate a detection signal and output the detection signal.

[0016] Preferably, the bottom of the cavity is provided with a vibration relief groove, which corresponds to a portion of the piezoelectric film.

[0017] Preferably, one end of the piezoelectric film is provided with a pin, 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 PCBA board applies force to the pin to press the piezoelectric film onto 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 includes a dishwasher door, a cabinet, a door lock, and a controller as described above;

[0020] The box has a storage space for holding and cleaning objects;

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

[0022] The door lock is located on the cabinet to lock, unlock, and extend the dishwasher door;

[0023] When the dishwasher is in sleep mode, the controller controls the door lock to unlock and the dishwasher door to be opened based on the detection signal output by the tapping sensor.

[0024] One embodiment of this utility model has the following beneficial effects:

[0025] 1. By installing a knock sensor inside 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 placing the knock sensor on the door shell, since the door shell vibrates directly due to the user's knocking action, the vibration of the door shell is transmitted to the knock sensor through a short path and with less vibration attenuation. Therefore, the vibration can be transmitted to the knock sensor more effectively, allowing the knock sensor to detect the user's knocking action more sensitively. Attached Figure Description

[0027] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

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

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

[0030] Figure 3 This is a schematic diagram of the installation structure of the door shell and the knocking sensor according to one embodiment of this utility model;

[0031] Figure 4 This is a three-dimensional structural diagram of a tapping sensor according to one embodiment of the present invention;

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

[0034] Figure 7 This is a bottom view of a PCBA board according to one embodiment of the present invention;

[0035] Figure 8 This is a three-dimensional structural diagram of the housing according to one embodiment of the present utility model;

[0036] Figure 9 This is a three-dimensional structural diagram of an embedded dishwasher according to one embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of an embedded dishwasher with the dishwasher door closed, according to one embodiment of the present invention.

[0038] Figure 11 This is a schematic diagram of the structure of an embedded dishwasher with the dishwasher door pushed open according to one embodiment of the present invention;

[0039] In the attached diagram: 100-Embedded dishwasher, 10-Dishwasher door, 1-Door housing, 11-Connecting post, 2-Impact sensor, 21-Housing, 211-Cavity, 212-Vibration relief groove, 22-Piezoelectric film, 221-Feet, 23-PCBA board, 20-Box. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. In addition, 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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 includes the first feature 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.

[0043] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] A dishwasher door 10 in this embodiment, such as Figure 1-8 As shown, it includes:

[0046] Door shell 1, the door shell 1 forming the outer structure of dishwasher door 10;

[0047] The knocking sensor 2 is fixed in the internal space enclosed by the door shell 1. The knocking sensor 2 responds to the vibration generated by knocking on the door shell 1 and outputs a detection signal.

[0048] Since dishwashers typically use an embedded installation structure, after installation, only the dishwasher door 10 is exposed, while the rest 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 is tapping the dishwasher. This invention uses a tapping sensor 2 installed inside the door shell 1 to detect the user's tapping action. When the user taps the dishwasher door 10, the door shell 1 vibrates. The tapping sensor 2 detects the vibration of the door shell 1 to determine the user's tapping action and outputs a detection signal. The dishwasher can perform corresponding actions based on the detection signal output by the tapping sensor 2, such as opening the dishwasher door 10, starting washing, pausing washing, or starting disinfection, etc., without specific limitations. By placing the knock sensor 2 on the door shell 1, since the door shell 1 vibrates directly due to the user's knocking action, the path of the vibration from the door shell 1 to the knock sensor 2 is short and the vibration attenuation is reduced. Therefore, the vibration can be transmitted to the knock sensor 2 more effectively, allowing the knock sensor 2 to detect the user's knocking action more sensitively. Understandably, since various components are also installed inside the door shell 1, the knock sensor 2 can be directly or indirectly connected to the door shell 1, that is, the knock sensor 2 can be directly fixed to the door shell 1 or the knock sensor 2 can be connected to the inside of the door shell 1 through a bracket.

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

[0050] Since the inner liner is located on the back of the door shell 1, and is hidden inside the dishwasher when the dishwasher door 10 is closed, the front of the dishwasher is the area where the user taps. When the user taps, the vibration intensity of the front wall of the door shell 1 is relatively large. Therefore, fixing the tapping sensor 2 to the front inner wall of the door shell 1 can better detect the user's tapping action.

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

[0052] By setting the connecting post 11, it is easy to fix the knock sensor 2 to the door shell 1. The knock sensor 2 and the connecting post 11 can be fixed by screw connection, snap connection, riveting or welding.

[0053] Furthermore, the knocking sensor 2 is attached to the inner front wall of the door housing 1.

[0054] This configuration allows for a larger contact area between the impact sensor 2 and the door housing 1, enabling the vibration of the door housing 1 to be better transmitted to the impact sensor 2, thereby improving the detection sensitivity of the impact sensor 2.

[0055] Furthermore, such as Figure 4-8 As shown, the tapping sensor 2 includes:

[0056] The housing 21 has a cavity 211 formed inside it;

[0057] A piezoelectric film 22 is disposed within the cavity 211;

[0058] PCBA board 23, the PCBA board 23 is confined within the cavity 211, and the PCBA board 23 presses the piezoelectric film 22 against 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 based on 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 vibrations are transmitted to the housing 21, since the piezoelectric film 22 is in contact with the bottom surface of the cavity 211, the vibration of the housing 21 is transmitted to the piezoelectric film 22 through the bottom surface of the cavity 211. When the piezoelectric film 22 vibrates, it generates a piezoelectric signal. The PCBA board 23 processes the electrical signal into a detection signal and transmits the detection signal to the controller. This invention uses the PCBA board 23 to press the piezoelectric film 22 onto the bottom surface of the cavity 211, which makes the structure of the impact sensor 2 more compact and the overall design more robust. The smaller size helps reduce the space occupied by the impact sensor 2 inside the dishwasher door 10. In addition, the piezoelectric film 22 can be directly soldered onto the PCBA board 23, thereby reducing the use of wires and lowering the cost. Since the piezoelectric film 22 and the PCBA board 23 are directly connected, the signal transmission distance is reduced, resulting in less signal interference and loss. Moreover, this invention places both the piezoelectric film 22 and the PCBA board 23 in the cavity 211 of the housing 21, making the impact sensor 2 an integrated structure, which is more convenient to install.

[0061] Furthermore, the bottom of the cavity 211 is provided with a vibration relief groove 212, which corresponds to a portion of the piezoelectric film 22.

[0062] By setting a relief groove, part of the piezoelectric film 22 can be suspended in the relief groove, while the other part is attached to the bottom surface of the cavity 211. This allows the vibration of the housing 21 to 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. At the same time, it prevents the piezoelectric film 22 from being completely compressed and unable to respond to the vibration of the housing 21, thereby enabling more accurate detection of vibrations caused by knocking.

[0063] Furthermore, one end of the piezoelectric film 22 is provided with a pin 221, 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 PCBA board applies force to the pin 221 to press the piezoelectric film 22 onto the bottom surface of the cavity 211.

[0064] The bottom surface of the PCBA board 23 has pads corresponding to the pins 221. The piezoelectric film 22 is soldered to the corresponding pads through the pins 221, thereby achieving 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 noted that the pins 221 have a certain bending angle. When the PCBA board 23 is installed in the cavity 211, the pins 221 can be supported on the bottom surface of the cavity 211, while the PCBA board 23 applies downward pressure to the pins 221, thereby pressing the piezoelectric film 22 against 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 fully contact the bottom surface of the cavity 211, thus affecting the detection accuracy. Understandably, the piezoelectric film 22 needs to generate through deformation. Piezoelectric signals, such as those from bending, are highly sensitive to the piezoelectric film 22. Due to the inherent processing error in the thickness of the PCBA board 23, if the PCBA board 23 is too thick, the piezoelectric film 22 will be firmly pressed against the bottom surface of the cavity 211, causing the piezoelectric film 22 to lose its deformation space, thus significantly reducing the accuracy of detection, or even making it impossible to detect the vibration generated by the impact. 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, making it difficult to respond to the vibration of the housing 21, and the detection sensitivity of the vibration signal will decrease significantly. Therefore, this invention cleverly bends the pins 221 of the piezoelectric film 22 at a certain angle, applies force to the pins 221 through the PCBA board 23, and uses the elasticity of the pins 221 to press the piezoelectric film 22 against the bottom surface of the cavity 211. The pins 221 can absorb the processing error of the PCBA board 23, thereby enabling a sensitive and accurate response to the vibration of the housing 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 varies. The bending angle of 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°, the pin 221 is difficult to press the piezoelectric film 22 onto the bottom surface of the cavity 211 due to the small angle. When the angle α between the pin 221 and the PCBA board 23 is greater than 20°, the bending angle is too large, which will generate greater stress on the solder joint between the pin 221 and the PCBA board 23, which is prone to desoldering. Preferably, the angle α between the pin 221 and the PCBA board 23 is 3° to 10°.

[0067] An embedded dishwasher 100, such as Figures 9 to 11As shown, it includes a dishwasher door 10, a cabinet 20, a door lock, and a controller as described above;

[0068] The box 20 has a storage space inside for holding and cleaning objects;

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

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

[0071] When the dishwasher is in sleep mode, the controller controls the door lock to unlock and the dishwasher door 10 to be opened based on the detection signal output by the tapping sensor 2.

[0072] In actual use, when a user needs to remove items from the dishwasher, such as bowls and chopsticks, they simply need to tap the dishwasher door 10. When the dishwasher door 10 is tapped, it vibrates. This vibration is transmitted through the door housing 1 to the tap sensor 2. The tap sensor 2 responds to this vibration and outputs a detection signal. If the dishwasher is in sleep mode at this time, the door lock unlocks, and the door lock pushes the dishwasher door 10 open a small angle. Figure 11 As shown, the dishwasher door 10 is designed to provide a point of leverage for the user to open to a greater angle. This design eliminates the need for a door handle in the built-in dishwasher 100, resulting in a more seamless integration of the dishwasher door 10 with the surrounding cabinetry and a more aesthetically pleasing appearance after installation. Furthermore, when the dishwasher is in operation, including washing, sanitizing, or drying states, the controller will not send unlocking or door-opening commands to the door lock to prevent accidents, even if the user taps on the dishwasher door 10. It should be noted that the door lock can be an existing lock, such as the door lock structure disclosed in patent publication number CN108652555A; the specific structure of the door lock is not within the scope of protection of this utility model.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dishwasher door, characterized in that, include: Door shell, which forms the outer shape of the dishwasher door; A knocking sensor is fixed in the internal space enclosed by the door shell. The knocking sensor outputs a detection signal in response to the vibration generated by knocking on the door shell.

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

3. A dishwasher door according to claim 2, characterized in that, The front inner wall of the door shell has a connecting post, and the knocking sensor is fixedly connected to the connecting post.

4. A dishwasher door according to claim 2, characterized in that, The knocking sensor is attached to the inner front wall of the door casing.

5. A dishwasher door according to claim 1, characterized in that, The tapping sensor includes: A housing, the interior of which is formed a cavity; A piezoelectric thin film, wherein the piezoelectric thin film is disposed within the cavity; PCBA board, wherein the PCBA board is confined within 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 based on the vibration of the housing. The PCBA board is electrically connected to the piezoelectric film and 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, The bottom of the cavity is provided with a vibration relief groove, which corresponds to a portion of the piezoelectric film.

7. A dishwasher door according to claim 5, characterized in that, One end of the piezoelectric film is provided with a pin, 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 PCBA board applies force to the pin to press the piezoelectric film onto 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. An embedded dishwasher, characterized in that, Includes a dishwasher door, cabinet, door lock, and controller as described in any one of claims 1-7; The box has a storage space for holding and cleaning objects; The dishwasher door is disposed on the cabinet and is used to open and close the open surface of the accommodating space; The door lock is located on the cabinet to lock, unlock, and extend the dishwasher door; When the dishwasher is in sleep mode, the controller controls the door lock to unlock and the dishwasher door to be opened based on the detection signal output by the tapping sensor.

Images