Door opening mechanism and household appliance

Abstract

The household appliance comprises a household appliance main body and a door body movably arranged on the household appliance main body, the household appliance main body is provided with an inner cavity, the inner cavity can be opened or closed by the door body, the door opening mechanism is characterized by comprising a driving part and a push rod, and the door opening mechanism comprises a connecting part and at least two pushing parts connected to the connecting part; the connecting part is connected with the output end of the driving piece, and the driving piece drives the connecting part to drive the two pushing parts to abut against the door body so that the inner cavity can be opened by the door body. Wherein the connecting part and the two pushing parts are of an integrated structure. According to the technical scheme, the automatic door opening function can be achieved, meanwhile, the structure can be simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a door opening mechanism and a household appliance. Background Art

[0002] Nowadays, for some household appliances with door structures, such as dishwashers, after the washing stage, there is a lot of high-temperature steam in the cavity of the dishwasher, which is in a high-temperature and high-humidity environment. In order to quickly eliminate this environment and ensure that the interior of the dishwasher quickly returns to dryness, it is usually necessary to manually or automatically open the door in time to allow the high-temperature and high-humidity air to be discharged smoothly.

[0003] In the related art, the automatic door opening function of a dishwasher often relies on a complex mechanism assembled from multiple precision components, resulting in excessively high overall manufacturing costs. Utility Model Content

[0004] The embodiments of the present application provide a door opening mechanism and a household appliance, which can realize the automatic door opening function while simplifying the structure to reduce manufacturing costs.

[0005] In a first aspect, an embodiment of the present application provides a door opening mechanism applicable to a household appliance, wherein the household appliance includes a household appliance body and a door body movably provided on the household appliance body, wherein the household appliance body has an inner cavity that can be opened or closed by the door body, and the door opening mechanism includes:

[0006] A drive member; and

[0007] The push rod includes a connecting portion and at least two pushing portions connected to the connecting portion, wherein the connecting portion is connected to the output end of the driving member, and the driving member drives the connecting portion to drive the two pushing portions to push against the door body, so that the door body opens the inner cavity;

[0008] Wherein, the connecting portion and the two pushing portions are an integrated structure.

[0009] In some embodiments, the two pushing portions are connected to the same side of the connecting portion, and the two pushing portions are respectively connected to opposite ends of the connecting portion in the length direction.

[0010] In some embodiments, the driving end of the driving member is directly connected to a side of the connecting portion facing away from the two pushing portions.

[0011] In some embodiments, at least a portion of the surface of the connecting portion and / or the two pushing portions is hollowed out.

[0012] In some embodiments, the door opening mechanism further comprises:

[0013] The shell is provided with a accommodating cavity and at least two avoidance openings communicated with the accommodating cavity, the driving member, the connecting portion and the two pushing portions are all arranged in the accommodating cavity, and one of the avoidance openings is used for one of the pushing portions to movably pass therethrough.

[0014] In some embodiments, the inner wall of the accommodating cavity is provided with a guide rib, and the guide rib extends along the movement direction of the pushing portion. The connecting portion and / or the pushing portion is provided with a guide groove, and the guide rib extends into the guide groove to slide with the guide groove.

[0015] In some embodiments, the door opening mechanism further comprises:

[0016] A guide wall is connected to the shell and is located in the accommodating cavity. The guide wall extends along the movement direction of the pushing portion and is used to abut and guide the connecting portion.

[0017] In some embodiments, two guide walls are provided, and the two guide walls are respectively located at two opposite sides in the length direction of the connecting portion and respectively abut against two opposite ends in the length direction of the connecting portion.

[0018] In some embodiments, the housing comprises:

[0019] Upper cover; and

[0020] The lower shell is connected to the upper cover to enclose the accommodating cavity and the two avoidance openings.

[0021] In some embodiments, the housing further comprises:

[0022] a positioning post connected to one of the upper cover and the lower shell;

[0023] Wherein, a positioning hole is opened on the other of the upper cover and the lower shell, and the positioning column is inserted and fixed in the positioning hole.

[0024] In some embodiments, the inner surface of at least one of the upper cover and the lower shell is recessed to form a limiting groove, and the driving member is embedded in the limiting groove.

[0025] In some embodiments, the door opening mechanism further comprises:

[0026] A door lock fastener is connected to a side of the shell where the avoidance opening is provided, and the door lock fastener is used to be fastened to the door body.

[0027] In some embodiments, the driving member is any one of an electric cylinder, a wax motor, a hydraulic driving mechanism, and a pneumatic driving mechanism.

[0028] In a second aspect, an embodiment of the present application provides a household appliance device, which includes a household appliance body and a door body movably provided on the household appliance body, and the door opening mechanism as described above, wherein the household appliance body has an inner cavity, and the inner cavity can be opened or closed by the door body.

[0029] The door opening mechanism and home appliance of the present invention utilize an integrated drive member and push rod to work together, achieving automatic door opening, significantly improving user convenience. Specifically, the door opening mechanism utilizes the output power of the drive member to directly drive the connecting portion of the push rod, which in turn drives at least two push members thereon to synchronously actuate against the door, allowing the door to smoothly open the interior of the home appliance body without manual operation, simplifying the operation process.

[0030] Furthermore, the connecting portion and two pusher parts of the push rod utilize an integrated structure. This design not only enhances the structural strength between components but also significantly simplifies the overall structure, reducing the number of parts and assembly steps, thereby effectively lowering manufacturing costs. This integrated design also enhances the stability and durability of the door opening mechanism, reducing the risk of failures due to loose or worn components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 This is a structural diagram of an embodiment of the door opening mechanism of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of the door opening mechanism of this application after the upper cover is removed;

[0034] Figure 3 This is a schematic diagram of the exploded structure of the door opening mechanism of this application;

[0035] Figure 4 This is a schematic structural diagram of the push rod of the door opening mechanism of this application.

[0036] Description of Figure Numbers:

[0037] 100. Door opening mechanism; 10. Driving member; 20. Push rod; 21. Connecting portion; 22. Pushing portion; 20a. Guide groove; 30. Shell; 30A. Accommodating chamber; 30B. Limiting groove; 30a. Avoidance opening; 30b. Positioning hole; 31. Upper cover; 32. Lower shell; 33. Guide rib; 34. Positioning column; 40. Guide wall.

[0038] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0040] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0041] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0043] The first aspect of the present application proposes a household appliance, which may be a dishwasher, a microwave oven, a disinfection cabinet, etc. The household appliance includes a household appliance body, a door body movably arranged on the household appliance body, and a door opening mechanism. The household appliance body has an inner cavity, which can be opened or closed by the door body. The present application takes the household appliance as an example of a dishwasher. The inner cavity of the household appliance body is a washing cavity, and the household appliance body is also provided with a take-in and put-out port connected to the washing cavity. The door body is rotatably connected to the side of the household appliance body where the take-in and put-out port is provided. Commonly, the bottom of the door body is connected to the body, and the top of the door body can rotate around the bottom. When the door body is in the open state, the door body and the household appliance body are set at a certain angle, and the take-in and put-out port is connected to the outside world. The user can put tableware into the washing cavity through the take-in and put-out port; when the door body is in the closed state, that is, when the door body and the body are combined, the take-in and put-out port is closed.

[0044] To improve dishwashing efficiency, water needs to be heated during the wash cycle. After the wash cycle, the dishwasher chamber contains a significant amount of high-temperature steam, creating a high-temperature, high-humidity environment. To quickly remove this steam and ensure the dishwasher interior quickly returns to dryness, the door typically needs to be opened promptly, either manually or automatically, to allow the high-temperature, high-humidity air to escape.

[0045] In the related art, the automatic door opening function of a dishwasher often relies on a complex mechanism assembled from multiple precision components, resulting in excessively high overall manufacturing costs.

[0046] To resolve the above issues, please refer to Figures 1 to 3 In a second aspect of the present application, a door opening mechanism 100 is proposed. In an embodiment of the present application, the door opening mechanism 100 includes a driving member 10 and a push rod 20 .

[0047] The driving member 10 serves as the power source of the door opening mechanism 100, ensuring that the door body can respond to the opening instruction quickly and reliably without manual operation, thereby realizing automatic opening.

[0048] In some embodiments, the driving member 10 is any one of an electric cylinder, a wax motor, a hydraulic drive mechanism, and a pneumatic drive mechanism. Among them, the wax motor in this embodiment can be a common wax motor on the market. The wax motor can achieve the effect of pushing the push rod 20 along a straight path. The specific working principle and specific model of the wax motor are not described in detail here. The electric cylinder in this embodiment is a modular product that integrates a servo motor and a lead screw. It converts the rotational motion of the servo motor into linear motion. At the same time, the advantages of the servo motor such as precise speed control, precise rotation speed control, and precise torque control are converted into advantages such as precise speed control, precise position control, and precise thrust control, thereby realizing a new revolutionary product in the high-precision linear motion series. At the same time, the electric cylinder is also a commonly used device for those skilled in the art. Therefore, the specific structure of the electric cylinder is not described in detail here.

[0049] The push rod 20 includes a connecting portion 21 and at least two pushing portions 22 connected to the connecting portion 21. The connecting portion 21 is connected to the output end of the driver 10. When the driver 10 is activated, the driver 10 drives the connecting portion 21, which causes the two pushing portions 22 to simultaneously push against the door body, thereby opening the inner cavity of the door body. It is understood that the number of pushing portions 22 can also be three, four, or five. This multi-point push against the door body not only improves the stability of the door opening action, but also reduces the problem of door deformation or damage caused by uneven force at a single point, further enhancing the safety and reliability of the door opening mechanism 100.

[0050] At the same time, the connecting portion 21 and the two pushing portions 22 are an integral structure. Specifically, the push rod 20 can be made of plastic material and integrally formed by injection molding or the like, which not only ensures the compactness of the structure but also makes the push rod 20 have good corrosion resistance and wear resistance, thereby extending the service life.

[0051] The door opening mechanism 100 and the household appliance of the present embodiment achieve automatic door opening through the coordinated operation of the integrated driver 10 and push rod 20, significantly improving user convenience. Specifically, the door opening mechanism 100 utilizes the output power of the driver 10 to directly drive the connecting portion 21 of the push rod 20, which in turn drives at least two push portions 22 thereon to synchronously actuate against the door, allowing the door to smoothly open the interior of the household appliance body without manual operation, thus simplifying the operation process.

[0052] Furthermore, the connecting portion 21 and the two pushing portions 22 of the push rod 20 utilize an integrated structure. This design not only enhances the structural strength between the components but also significantly simplifies the overall structure, reducing the number of parts and assembly steps, thereby effectively lowering manufacturing costs. Furthermore, the integrated design enhances the stability and durability of the door opening mechanism 100, reducing the risk of failures due to loose or worn components.

[0053] Reference Figures 2 to 4In some structural forms, the two pushing parts 22 are connected to the same side of the connecting part 21, and the two pushing parts 22 are respectively connected to the opposite ends of the length direction of the connecting part 21. In this way, the two pushing parts 22 are symmetrically arranged at the two side ends of the connecting part 21, which ensures that the push rod 20 can apply a balanced and stable force when pushing the door body. This balanced force not only helps the door body to open smoothly, reduces the vibration or noise caused by uneven force, but also extends the service life of the door body and its related components. Secondly, the two pushing parts 22 are located at opposite ends of the length direction of the connecting part 21, which also optimizes the overall structural layout of the push rod 20, making the push rod 20 more flexible and efficient when pushing the door body. This layout allows the push rod 20 to fully utilize its length advantage during the pushing process, forming a longer lever arm, thereby reducing the force required for pushing and improving energy utilization efficiency.

[0054] Furthermore, the driving end of the driving member 10 is directly connected to the side of the connecting portion 21 away from the two pushing portions 22. Such a direct connection ensures that the power of the driving member 10 can be transmitted to the connecting portion 21 without loss, thereby driving the two pushing portions 22 to perform precise reciprocating motion along a straight path. This linear motion mode not only makes the door opening action smoother. Secondly, it eliminates the complex transmission mechanisms in the traditional door opening mechanism 100, such as gears, chains or belts, which not only reduces manufacturing costs and maintenance difficulties, but also reduces performance degradation problems caused by wear or failure of transmission components. This direct drive design makes the door opening mechanism 100 more compact.

[0055] Furthermore, the surface of the pushing portion 22 facing away from the connecting portion 21 is arranged in a plane. Firstly, the planar design makes the contact between the pushing portion 22 and the door body more uniform and stable. During the pushing process, the phenomenon of jamming or offset caused by uneven surface is avoided, thereby ensuring the smoothness and accuracy of the door opening action. This stable contact also reduces the noise and wear caused by friction, and extends the service life of the pushing portion 22 and the entire door opening mechanism 100. Secondly, the planar design simplifies the processing and manufacturing process of the pushing portion 22. Compared with complex curved surfaces or irregular shapes, planar structures are easier to achieve precise dimensional control and surface treatment, thereby improving production efficiency and product quality. At the same time, the planar design also facilitates subsequent maintenance and replacement work, reducing maintenance costs and difficulty.

[0056] Reference Figures 2 to 4Optionally, at least part of the surface of the connecting portion 21 or the two pushing portions 22 is hollowed out. Specifically, both relative surfaces in the thickness direction of the connecting portion 21 or the two pushing portions 22 can be hollowed out. The hollowing design effectively reduces the overall weight of the connecting portion 21 and the pushing portions 22, making the entire door opening mechanism 100 lighter and easier to install and debug. Furthermore, if the hollowing design is introduced on both the connecting portion 21 and the two pushing portions 22 at the same time, the weight-reducing effect will be doubled, and the overall weight of the door pusher will be further optimized. This not only means a reduction in energy consumption, but also helps to extend the service life of the mechanism, because lighter weight means that the stress and wear under the same movement conditions will also be reduced accordingly.

[0057] Reference Figures 2 to 4 In some structural forms, the door opening mechanism 100 further includes a housing 30, which is provided with a housing cavity 30A and at least two avoidance openings 30a in communication with the housing cavity 30A. The driving member 10, the connecting portion 21, and the two pushing portions 22 are all provided in the housing cavity 30A, and the avoidance opening 30a is provided for the pushing portion 22 to movably pass therethrough. In this way, the housing cavity 30A of the housing 30 provides a stable placement space for the driving member 10, the connecting portion 21, and the two pushing portions 22, effectively avoiding interference and damage from the external environment. The presence of the housing 30 also enhances the overall structural strength and protective performance of the door opening mechanism 100, thereby isolating the key internal components from the external environment and effectively resisting the invasion of adverse factors such as dust and moisture. This not only extends the service life of the door opening mechanism 100, but also reduces the failure rate and maintenance costs caused by environmental factors.

[0058] The shell 30 is made of plastic, alloy or composite material that is resistant to high temperatures and has a certain thermal conductivity, or the surface of the shell 30 may be coated with a high-temperature resistant coating to improve the stability of the shell 30 and extend its service life.

[0059] At the same time, the provision of at least two avoidance openings 30a in communication with the accommodating cavity 30A reserves a channel for the movement of the pushing portion 22, so that the pushing portion 22 can smoothly pass through it to perform the task of pushing the door open. It is understandable that the opening shape of the avoidance opening 30a can be a rectangular opening or a circular opening, etc. The design of the rectangular opening is usually more in line with the characteristics of linear motion, and can provide clear guidance and stable support for the pushing portion 22. During the processing, the rectangular opening is also easier to achieve through cutting, stamping and other processes, ensuring processing accuracy and efficiency. The circular opening is known for its rounded lines and smooth contours, which can reduce the stress concentration caused by sharp edges to a certain extent, and improve the durability of the avoidance opening 30a. The processing of the circular opening is also relatively simple, and can be easily completed by drilling, milling and other methods.

[0060] Furthermore, the inner wall of the accommodating cavity 30A is provided with a guide rib 33, which extends along the direction of movement of the push portion 22. The connecting portion 21 or the push portion 22 is provided with a guide groove 20a, and the guide rib 33 extends into the guide groove 20a to slide with the guide groove 20a. In this way, when the push portion 22 moves under the action of the driving member 10, the guide rib 33 will naturally extend into the guide groove 20a. The sliding fit between the two ensures that the push portion 22 can move smoothly along the predetermined direction, avoiding the occurrence of deviation or shaking. This design not only improves the accuracy of the door opening action, but also reduces the noise and wear caused by unstable movement, thereby extending the service life of the mechanism. In addition, the sliding fit between the guide rib 33 and the guide groove 20a also enhances the self-locking performance of the door opening mechanism 100. In certain circumstances, such as when encountering external impact or system failure, the guide rib 33 can be tightly locked within the guide groove 20a, preventing the push portion 22 from accidentally dislodging or losing control, thereby ensuring the safety and reliability of the mechanism. It should be noted that the connecting portion 21 and the push portion 22 can both be provided with guide grooves 20a, and the inner wall of the accommodating cavity 30A can be provided with multiple guide ribs 33. Each guide groove 20a cooperates with a guide rib 33 to further ensure the precise guidance and smooth operation of the connecting portion 21 and the push portion 22 during movement.

[0061] Reference Figure 2 and Figure 3 Optionally, the door opening mechanism 100 further includes a guide wall 40 connected to the housing 30 and located within the accommodating cavity 30A. The guide wall 40 extends along the direction of movement of the push portion 22 and is configured to abut against the guide connection portion 21. The provision of the guide wall 40 reduces the deviation and shaking of the connection portion 21 during movement, ensuring that the push portion 22 can move smoothly along a predetermined trajectory. This precise guiding action not only improves the smoothness and accuracy of the door opening action, but also reduces noise and wear caused by unstable movement, thereby extending the service life of the door opening mechanism 100.

[0062] Furthermore, the guide wall 40 is integrated with the housing 30. This integrated design eliminates any gaps between the guide wall 40 and the housing 30, thereby reducing unstable movement and noise caused by loose or misaligned components. This tight connection ensures that the guide wall 40 always extends accurately along the direction of movement of the push portion 22, providing stable and reliable guidance for the connecting portion 21.

[0063] Optionally, the door opening mechanism 100 further includes a door lock fastener (not shown), which is connected to the side of the housing 30 provided with the avoidance opening 30a, and the door lock fastener is used to fasten with the door body. The introduction of the door lock fastener makes the door opening mechanism 100 no longer just a simple switch device, but a comprehensive system that integrates the door body fastening function. During the installation process, there is no need to install a separate door lock fastener. The door body can be easily fastened directly using the door lock fastener provided on the door opening mechanism 100, which greatly simplifies the installation steps and saves time and cost. Specifically, the door lock fastener can be located in the area between the two avoidance openings 30a of the housing 30.

[0064] Reference Figures 2 to 4 In some embodiments, the shell 30 includes an upper cover 31 and a lower shell 32, and the lower shell 32 and the upper cover 31 are connected to enclose a accommodating chamber 30A and two avoidance openings 30a. In this way, the shell 30 adopts a split design to facilitate manufacturing and assembly. The upper cover 31 and the lower shell 32 can be processed and manufactured separately, and then combined together through appropriate connection methods (such as screw fixing, snap connection, etc.) to form a complete shell 30 structure. This modular production method improves production efficiency, reduces manufacturing costs, and also facilitates subsequent maintenance and replacement work. Secondly, the tight connection between the upper cover 31 and the lower shell 32 enhances the overall strength and sealing of the shell 30. During the connection process, by ensuring the firmness and tightness of each connection point, adverse factors such as external dust and moisture can be effectively prevented from invading the interior of the accommodating chamber 30A, protecting key components such as the internal drive part 10, the connecting part 21 and the pushing part 22 from damage. At the same time, the sturdy shell 30 structure also improves the stability and safety of the door opening mechanism 100 during use.

[0065] Furthermore, the housing 30 also includes a positioning post 34, which is connected to one of the upper cover 31 and the lower shell 32. A positioning hole 30b is formed in the other of the upper cover 31 and the lower shell 32, and the positioning post 34 is plugged and fixed in the positioning hole 30b. The cooperation between the positioning post 34 and the positioning hole 30b ensures the precise positioning of the upper cover 31 and the lower shell 32 during assembly, avoids assembly problems caused by positional deviation, and thus improves the assembly accuracy and stability of the entire housing 30. Secondly, the plug-in fixing method of the positioning post 34 simplifies the assembly process and reduces the difficulty of assembly. The cooperation between the positioning post 34 and the positioning hole 30b is more intuitive and easy to operate, greatly improving production efficiency.

[0066] Furthermore, the inner surface of at least one of the upper cover and the lower shell 32 is recessed to form a limiting groove 30B, and the driver 10 is embedded in the limiting groove 30B. In this way, the limiting groove 30B provides a precise positioning space for the driver 10, ensuring the stability and accuracy of the driver 10 during the installation process. This tight fitting relationship effectively prevents the driver 10 from shaking or deflecting during operation, thereby ensuring the stability and reliability of the overall mechanical structure. Secondly, the presence of the limiting groove 30B also enhances the connection strength between the driver 10 and the shell 30. After the driver 10 is embedded in the limiting groove 30B, it is tightly surrounded by the shell 30 material on all sides, forming a strong support and fixing effect. This structure not only improves the impact and vibration resistance of the driver 10, but also extends its service life. In addition, the design of the limiting groove 30B also simplifies the assembly process and improves assembly efficiency. During the assembly process, the operator only needs to align the driver 10 with the limiting groove 30B and gently push it in to achieve fixation, without the need for additional fasteners or complicated assembly steps. The convenience of this one-click installation not only reduces assembly difficulty and cost, but also reduces the failure rate caused by improper assembly.

[0067] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0068] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A door opening mechanism, suitable for a household appliance, wherein the household appliance comprises a household appliance body and a door body movably provided on the household appliance body, wherein the household appliance body has an inner cavity, and the inner cavity can be opened or closed by the door body, and wherein: The door opening mechanism comprises: A drive member; and The push rod includes a connecting portion and at least two pushing portions connected to the connecting portion, wherein the connecting portion is connected to the output end of the driving member, and the driving member drives the connecting portion to drive the two pushing portions to push against the door body, so that the door body opens the inner cavity; Wherein, the connecting portion and the two pushing portions are an integrated structure.

2. The door opening mechanism according to claim 1, wherein: The two pushing portions are connected to the same side of the connecting portion, and the two pushing portions are respectively connected to two opposite ends of the connecting portion in the length direction.

3. The door opening mechanism according to claim 2, wherein: The driving end of the driving member is directly connected to a side of the connecting portion away from the two pushing portions.

4. The door opening mechanism according to claim 1, wherein: At least part of the surface of the connecting portion and / or the two pushing portions is hollowed out.

5. The door opening mechanism according to claim 1, wherein: The door opening mechanism also includes: The shell is provided with a accommodating cavity and at least two avoidance openings communicated with the accommodating cavity, the driving member, the connecting portion and the two pushing portions are all arranged in the accommodating cavity, and one of the avoidance openings is used for one of the pushing portions to movably pass therethrough.

6. The door opening mechanism according to claim 5, wherein: The inner wall of the accommodating cavity is provided with a guide rib, and the guide rib extends along the movement direction of the pushing portion. The connecting portion and / or the pushing portion is provided with a guide groove, and the guide rib extends into the guide groove to slide with the guide groove.

7. The door opening mechanism according to claim 5, wherein: The door opening mechanism also includes: A guide wall is connected to the shell and is located in the accommodating cavity. The guide wall extends along the movement direction of the pushing portion and is used to abut and guide the connecting portion.

8. The door opening mechanism according to claim 7, wherein: There are two guide walls, which are respectively located at two opposite sides of the connecting portion in the length direction and respectively abut against two opposite ends of the connecting portion in the length direction.

9. The door opening mechanism according to claim 5, wherein: The housing comprises: Upper cover; and The lower shell is connected to the upper cover to enclose the accommodating cavity and the two avoidance openings.

10. The door opening mechanism according to claim 9, wherein: The housing further comprises: a positioning post connected to one of the upper cover and the lower shell; Wherein, a positioning hole is opened on the other of the upper cover and the lower shell, and the positioning column is inserted and fixed in the positioning hole.

11. The door opening mechanism according to claim 9, wherein: The inner surface of at least one of the upper cover and the lower shell is concavely provided to form a limiting groove, and the driving member is embedded in the limiting groove.

12. The door opening mechanism according to claim 5, wherein: The door opening mechanism also includes: A door lock fastener is connected to a side of the shell where the avoidance opening is provided, and the door lock fastener is used to be fastened to the door body.

13. The door opening mechanism according to any one of claims 1 to 12, characterized in that: The driving member is any one of an electric cylinder, a wax motor, a hydraulic driving mechanism, and a pneumatic driving mechanism.

14. A household appliance, characterized in that: The household appliance comprises a household appliance body and a door body movably provided on the household appliance body, and a door opening mechanism according to any one of claims 1 to 13, wherein the household appliance body has an inner cavity which can be opened or closed by the door body.

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