Door opening control system of dish washing machine and dish washing machine

Abstract

The utility model discloses a dish-washing machine door opening control system and dish-washing machine, the dish-washing machine door opening control system includes: a door balance assembly including a pull rope connected between a machine body and a door body of the dish-washing machine, and the pull rope including a trigger section; the automatic door opening device comprises a control assembly, a protection assembly and an automatic door opening assembly, the protection assembly comprises a protection switch and a trigger part, the control assembly, the protection switch and the automatic door opening assembly are connected to form a series loop, and the control assembly is suitable for controlling the automatic door opening assembly to open a door body in the state that the series loop is conducted. The trigger section is straightened in a normal state, abuts against the trigger piece and drives the trigger piece to trigger the protection switch, so that the series loop is conducted. And the trigger section is separated from the trigger piece in an abnormal state, and the trigger piece relieves triggering of the protection switch, so that the series loop is disconnected. According to the door opening control system of the dish washing machine, the door body can be closed under the condition that the positioning function of the door balance assembly on the door body fails, and safety is good.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and more particularly to a door opening control system of a dishwasher and the dishwasher. Background Art

[0002] As people's living standards improve, hands-free dishwashers are becoming a standard feature of quality living. Due to limited energy resources, energy consumption standards for electrical appliances are constantly increasing. Domestic and international dishwashers often feature automatic door opening for faster drying.

[0003] In the related art, the door of the dishwasher is prone to falling quickly, causing the dishwasher to be damaged or even hit the user, posing a safety hazard. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one object of the present invention is to provide a door opening control system for a dishwasher, which prevents the door of the dishwasher from falling down quickly and improves safety.

[0005] Another object of the present invention is to provide a dishwasher having the door opening control system of the dishwasher.

[0006] According to an embodiment of the present invention, the door opening control system of the dishwasher includes: a door balancing component, the door balancing component includes a pull rope, the pull rope is connected between the body and the door body of the dishwasher, and the pull rope includes a trigger section; a control component, a protection component and an automatic door opening component, the protection component includes a protection switch and a trigger member, the control component, the protection switch and the automatic door opening component are connected to form a series circuit, and the control component is suitable for controlling the automatic door opening component to open the door body when the series circuit is turned on, wherein the trigger section is straightened and abuts against the trigger member under normal conditions, and drives the trigger member to trigger the protection switch to turn on the series circuit; the trigger section is separated from the trigger member under abnormal conditions, and the trigger member releases the triggering of the protection switch to disconnect the series circuit.

[0007] According to the dishwasher door opening control system of the embodiment of the present invention, the series circuit can be disconnected when the door balancing assembly fails to position the door body, so that the door body is in a closed state, preventing the door body from losing control and suddenly falling, thereby improving the safety of the dishwasher.

[0008] In addition, the door opening control system of the dishwasher according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the trigger member includes a roller, and the trigger section abuts against the roller in a normal state.

[0010] According to some embodiments of the present invention, the trigger member also includes a spring piece connected to the roller. Under normal conditions, the trigger segment drives the spring piece to deform to trigger the contacts of the protection switch. Under abnormal conditions, the trigger segment separates from the roller, and the spring piece returns to its original shape to release the triggering of the contacts.

[0011] According to some embodiments of the present invention, the spring sheet at least partially overlaps with the vertical projection of the contact, and the roller at least partially overlaps with the vertical projection of the trigger segment, wherein the spring sheet at least partially extends downwardly in a non-deformed state, the roller is provided at the lower end of the spring sheet, the roller is located on the upper side of the trigger segment, and the contact is located on the upper side of the spring sheet; or, the spring sheet at least partially extends upwardly in a non-deformed state, the roller is provided at the upper end of the spring sheet, the roller is located on the lower side of the trigger segment, and the contact is located on the lower side of the spring sheet.

[0012] According to some embodiments of the present invention, the control component is used to supply power to the automatic door opening component when the series circuit is connected; the control component stops supplying power to the automatic door opening component when the series circuit is disconnected.

[0013] According to some embodiments of the present invention, there are two door balancing assemblies and two protection assemblies, the two door balancing assemblies are spaced apart along the rotation axis of the door body, the two protection assemblies are arranged in one-to-one correspondence with the two door balancing assemblies, and the two protection assemblies are connected in series to the same series circuit.

[0014] According to some embodiments of the present invention, the door opening control system also includes a door lock assembly, which is used to lock the door body and the machine body. The automatic door opening assembly includes a shell and a driving member and a push rod installed in the shell. The shell is installed in one of the door body and the machine body, the driving member is connected to one end of the push rod, and the other end of the push rod is suitable for extending out of the shell to apply a thrust to the other of the door body and the machine body to drive the door lock assembly to unlock.

[0015] According to some embodiments of the present invention, the door balancing assembly includes a limiting fitting part, the pull rope includes a first pull rope and a second pull rope, the first pull rope is connected between the machine body and the limiting fitting part, the second pull rope is connected between the door body and the limiting fitting part, at least part of the first pull rope is formed as the trigger section, the machine body is provided with a limiting part, the limiting fitting part is located on the side of the limiting part close to the second pull rope, and when the door body is closed, the second pull rope is in a relaxed state and the limiting fitting part is against the limiting part.

[0016] According to some embodiments of the present invention, the door balancing assembly includes an elastic member connected to the first pull rope, and the elastic member is suitable for deforming to apply a pulling force toward the limiting portion to the limiting fitting portion.

[0017] The dishwasher according to the embodiment of the present invention includes the door opening control system according to the embodiment of the present invention.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is an exploded view of a dishwasher according to an embodiment of the present utility model;

[0021] Figure 2 is a side view of a dishwasher according to an embodiment of the present invention, showing a door in a closed state, a door at a predetermined door opening angle, and a door fully opened;

[0022] Figure 3 is an exploded diagram of a door opening control system according to an embodiment of the present utility model;

[0023] Figure 4 This is a partial structural diagram of a door opening control system according to an embodiment of the present utility model;

[0024] Figure 5 yes Figure 1 The middle circle shows a partial enlarged view of point A;

[0025] Figure 6 yes Figure 2 The middle circle shows a partial enlarged view of point B;

[0026] Figure 7 is a front view of a dishwasher according to an embodiment of the present utility model;

[0027] Figure 8 is a cross-sectional view of a dishwasher according to an embodiment of the present utility model;

[0028] Figure 9 yes Figure 8 The middle circle shows a partial enlarged view of point C;

[0029] Figure 10 yes Figure 2 sectional view of

[0030] Figure 11 yes Figure 10 The middle circle shows a partial enlarged view of point D.

[0031] Reference numerals:

[0032] Dishwasher 1000; door opening control system 100; machine body 200; stopper 210; base 220; rotating shaft 230; door body 300; hinge 310;

[0033] Door balancing assembly 10; pull rope 11; first pull rope 111; trigger section 112; second pull rope 113; rivet buckle 114; position-limiting fitting portion 12; elastic member 13; fastener 131; guide wheel 14;

[0034] Control assembly 20; control box 21; PCB control board 22; cover 23;

[0035] Protection assembly 30; protection switch 31; trigger 32; roller 321; spring 322; contact 323;

[0036] Automatic door opening assembly 40; housing 41; drive member 42; ejector rod 43; compression spring 44;

[0037] Human-computer interaction component 50; control panel 51; display screen 52;

[0038] Door lock assembly 60; door lock 61; lock catch 62. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0041] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature include the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0042] The door opening control system 100 of the dishwasher 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0043] Reference Figures 1-11 As shown, the door opening control system 100 according to an embodiment of the present invention may include a door balancing component 10 , a control component 20 , a protection component 30 and an automatic door opening component 40 .

[0044] Specifically, the door balancing assembly 10 includes a pull cord 11 connected between the dishwasher body 200 and the door 300, and includes a trigger section 112. The door balancing assembly 10 can fix the relative position of the door 300 and the dishwasher body 200 to position the door 300.

[0045] For example, in some embodiments, after the door 300 is opened, the door 300 and the machine body 200 are tightened by the pull rope 11 to fix the relative position of the door 300 and the machine body 200, thereby limiting the door 300 to the current open position. Figure 1-Figure 2 As shown, the closed door 300 can be fully opened so that the door 300 and the plane of the access opening of the washing chamber in the machine body 200 are at a 90° angle, and the access opening is fully open so that the user can take in and put in dishes. The door 300 can also be opened to a desired predetermined opening angle so that the angle between the door 300 and the plane of the access opening is less than 90°, and the access opening is partially open, so that a certain degree of air convection can occur between the washing chamber and the outside world, so as to dry the dishes in the washing chamber. If the door 300 is not fully opened, foreign matter such as dust and flies from the outside world is not easily entered into the washing chamber, which is conducive to keeping the dishes clean.

[0046] The protection component 30 includes a protection switch 31 and a trigger 32. The control component 20, the protection switch 31 and the automatic door opening component 40 are connected to form a series circuit. When the series circuit is turned on, the control component 20 can control the automatic door opening component 40 to open the door body 300.

[0047] In the series circuit, there is no restriction on the connection method of the control component 20, the protection switch 31 and the automatic door opening component 40, for example, they can be connected through a wiring harness. There is no restriction on the connection order of the control component 20, the protection switch 31 and the automatic door opening component 40, for example, the protection switch 31 can be located between the control component 20 and the automatic door opening component 40 (such as Figure 3 As shown), the control component 20 can also be located between the protection switch 31 and the automatic door opening component 40, and the automatic door opening component 40 can also be located between the control component 20 and the protection switch 31, so that the control component 20, the protection switch 31 and the automatic door opening component 40 are connected in series to form a series circuit.

[0048] When the series circuit is connected, the control assembly 20 can control the automatic door opening assembly 40 to open the door body 300, and then position the door body 300 through the door balancing assembly 10. When the series circuit is disconnected, the control assembly 20 cannot control the automatic door opening assembly 40 to open the door body 300, that is, the door body 300 will not open automatically.

[0049] Failure of any part in the series circuit will cause the series circuit to be disconnected, for example, any component in the control component 20, the protection switch 31 and the automatic door opening component 40 fails, or the connection part connecting the control component 20, the protection switch 31 and the automatic door opening component 40 is disconnected.

[0050] The door balancing assembly 10 and the protection assembly 30 are configured in a corresponding manner. Specifically, in a normal state, the trigger segment 112 is stretched straight and abuts against the trigger member 32, driving the trigger member 32 to trigger the protection switch 31, thereby connecting the series circuit. In an abnormal state, the trigger segment 112 separates from the trigger member 32, and the trigger member 32 releases the triggering of the protection switch 31, thereby disconnecting the series circuit. The normal state here refers to the door balancing assembly 10 being in normal working order and able to position the door body 300. The abnormal state refers to the door balancing assembly 10 failing and being unable to position the door body 300. For example, the pull rope 11 in the door balancing assembly 10 is disconnected, causing the door balancing assembly 10 to fail.

[0051] In some related technologies, the door of the dishwasher is positioned by a pull rope, but the pull rope is prone to breakage after a period of use, causing the door to fall quickly and damage the dishwasher or even injure the user, posing a safety hazard.

[0052] The present application forms a series circuit by using the control component 20, the protection switch 31, and the automatic door opening component 40. Once the door balancing component 10 fails to position the door body 300 due to problems such as the breakage of the pull cord 11, the trigger section 112 will be separated from the trigger member 32, thereby releasing the trigger of the protection switch 31 and disconnecting the series circuit. When the series circuit is disconnected, the control component 20 cannot open the door body 300 through the automatic door opening component 40, so that the door body 300 is in a closed state when the door balancing component 10 fails. This can respond to abnormally fast speeds of the door balancing component 10, reduce the risk of the door body 300 falling rapidly and damaging the dishwasher 1000 or even injuring the user, and provide better safety.

[0053] According to the door opening control system 100 of the dishwasher 1000 in the embodiment of the present invention, the series circuit can be disconnected when the positioning function of the door balancing assembly 10 on the door body 300 fails, so that the door body 300 is in a closed state, preventing the door body 300 from losing control and suddenly falling, thereby improving the safety of use of the dishwasher 1000.

[0054] In some embodiments of the present invention, Figure 3-Figure 6 As shown, the trigger member 32 includes a roller 321, and the trigger segment 112 is normally against the roller 321. The rotatable roller 321 enables dynamic coordination between the trigger member 32 and the trigger segment 112, so that the roller 321 can always be against the moving trigger segment 112 during the movement of the pull cord 11. This reduces the risk of the trigger member 32 and the trigger segment 112 being separated due to the movement of the pull cord 11 under normal conditions, and improves the accuracy of the door opening control system 100 in controlling the opening and closing of the door body 300.

[0055] In some embodiments, as Figure 4 As shown, the trigger member 32 also includes a spring piece 322 connected to the roller 321. Under normal conditions, the trigger segment 112 drives the spring piece 322 to deform to trigger the contact 323 of the protection switch 31. Under abnormal conditions, the trigger segment 112 separates from the roller 321, and the spring piece 322 returns to its original shape to release the trigger on the contact 323.

[0056] In a normal state, trigger segment 112 is stretched straight and abuts roller 321, allowing it to exert force on spring 322 through roller 321, causing it to deform. This deformation triggers contact 323, thus completing the series circuit. In an abnormal state, trigger segment 112 separates from roller 321, allowing spring 322 to return to its original shape under its own elastic force, releasing the triggering force on contact 323 and disconnecting the series circuit. This allows the protection switch 31 to be more sensitive to abnormal conditions in the door balancing assembly 10.

[0057] For example, in some embodiments, the protection switch 31 is a micro switch. Under normal conditions, the spring 322 presses the contact 323 of the micro switch to trigger the micro switch. Under abnormal conditions, the spring 322 returns to its original shape and releases the pressure on the contact 323, causing the contact 323 to pop out to release the triggering of the micro switch.

[0058] In some embodiments, as Figure 4 As shown, the vertical projections of the spring piece 322 and the contact 323 at least partially overlap, and the vertical projections of the roller 321 and the trigger section 112 at least partially overlap. In the non-deformed state, the spring piece 322 at least partially extends downwardly at an angle. The roller 321 is disposed at the lower end of the spring piece 322 and is located above the trigger section 112, separating the roller 321 from the trigger section 112. The contact 323 is located above the spring piece 322, preventing the contact 323 from being triggered.

[0059] In its normal state, trigger segment 112 is stretched straight, causing its upper surface to abut against the lower surface of roller 321. This in turn deforms spring clip 322, causing the portion of spring clip 322 where roller 321 is mounted to move upward. The upward deformation of spring clip 322 triggers upper contact 323, completing the series circuit. The coordination between roller 321, spring clip 322, contact 323, and trigger segment 112 allows the series circuit to be accurately opened or closed based on the state of door balancing assembly 10, reducing the risk of door body 300 falling.

[0060] Of course, in other embodiments, the spring piece 322 can be configured to at least partially extend upward in a non-deformed state, with the roller 321 disposed at the upper end of the spring piece 322, the roller 321 located below the trigger section 112, and the contact 323 located below the spring piece 322. In the normal state, the trigger section 112 is stretched straight, causing the lower surface of the trigger section 112 to abut against the upper surface of the roller 321. This in turn deforms the spring piece 322, causing the portion of the spring piece 322 mounted with the roller 321 to move downward. The downward deformation of the spring piece 322 triggers the lower contact 323, thereby completing the series circuit. This allows for greater flexibility in the installation position of the protection assembly 30 relative to the door balancing assembly 10.

[0061] In some embodiments of the present invention, Figure 3 As shown, the control component 20 is used to supply power to the automatic door opening component 40 when the series circuit is connected. The automatic door opening component 40 can open the door body 300 after power is supplied. The control component 20 stops supplying power to the automatic door opening component 40 when the series circuit is disconnected. The automatic door opening component 40 cannot open the door body 300 when power is cut off, so that the door body 300 is in a closed state. The method of controlling whether the door body 300 can be opened is easy to implement.

[0062] In some embodiments, as Figure 1 and Figure 3-Figure 4As shown, there are two door balancing components 10 and two protection components 30, and the two door balancing components 10 are arranged along the rotation axis of the door body 300 (for example, Figure 1 The two protection assemblies 30 are spaced apart (in the left and right directions shown), and the two door balancing assemblies 10 are arranged in a one-to-one correspondence. The two protection assemblies 30 are connected in series to the same series circuit. The two door balancing assemblies 10 position different portions of the door body 300 along the rotational axis, making the door body 300 stable and less prone to shaking, thereby improving the positioning effect of the door body 300. The two protection assemblies 30 can also determine whether the two door balancing assemblies 10 are in an abnormal state. If either door balancing assembly 10 is in an abnormal state, the series circuit is immediately disconnected, preventing the door body 300 from opening and keeping it closed, thereby ensuring safer opening and closing control of the door body 300.

[0063] In some embodiments, as Figure 1 and Figure 7-Figure 8 As shown, the door opening control system 100 also includes a human-machine interaction component 50. The human-machine interaction component 50 is used to issue an abnormal prompt message when the series circuit is disconnected to remind the user that the door balance component 10 used to position the door body 300 is currently in an abnormal state, so that the user can repair the washing machine in time. It can also prevent the user from forcibly opening the door body 300 without knowing it, causing the door body 300 to fall, which is safer.

[0064] In some embodiments, the human-machine interaction component 50 is integrated with or communicatively connected to the control component 20 so that the human-machine interaction component 50 confirms the on / off status of the series circuit through the control component 20. The human-machine interaction component 50 can be a display, an alarm, or the like.

[0065] In some embodiments of the present invention, Figures 1-4 and Figures 8-11 As shown, the door opening control system 100 further includes a door lock assembly 60, which is used to lock the door body 300 and the machine body 200. The automatic door opening assembly 40 includes a housing 41, a driving member 42 and a push rod 43 installed in the housing 41. The housing 41 is installed in the machine body 200. The driving member 42 is connected to one end of the push rod 43. The other end of the push rod 43 can extend from the housing 41 to apply a thrust to the door body 300, thereby driving the door lock assembly 60 to unlock.

[0066] Control assembly 20 controls driver 42 to apply a driving force to push rod 43, thereby driving push rod 43 to move, allowing the other end of push rod 43 to extend from housing 41, thereby applying a thrust force to door 300, thereby unlocking door lock assembly 60 and automatically opening the door. This provides dishwasher 1000 with an automatic door opening function, eliminating the need for manual operation and enhancing convenience. Of course, the user can also manually open the door as needed. Housing 41 defines a mounting cavity for driver 42 and push rod 43, as well as a guide channel for guiding push rod 43, making installation more convenient.

[0067] After the door body 300 is opened or closed, the door body 300 is kept balanced by the door balancing component 10, and the automatic door opening component 40 does not need to be continuously controlled by the control component 20. For example, if the automatic door opening component 40 is continuously powered by the control component 20, it is beneficial to reduce energy consumption and increase the service life of the automatic door opening component 40.

[0068] In other embodiments, the automatic door opening assembly 40 may also be provided on the door body 300. Specifically, the housing 41 may be provided on the door body 300, and the push rod 43 may apply a thrust to the body 200 to drive the door lock assembly 60 to unlock.

[0069] In some embodiments, the door opening control system 100 includes a detection component, which is used to detect the displacement of the push rod 43 to determine the on-off state of the series circuit. After the user or the dishwasher issues a door opening command, the detection component detects that the push rod 43 has moved, causing the door body 300 to open, which means that the series circuit is in the on state. The detection component detects that the push rod 43 has not moved or the moving path is too short to drive the door lock assembly 60 to unlock, causing the door body 300 to be in the closed state, which means that the series circuit is in the off state or is disconnected after being on for a period of time. By detecting the displacement of the push rod 43 by the detection component, the on-off state of the series circuit can be determined more accurately so that timely processing such as error reporting can be carried out.

[0070] In some embodiments, the driving member 42 is a wax motor, which needs to be powered on and heated for a set time to drive the push rod 43 to move a set displacement and open the door 300. If the heating time of the wax motor is less than the set time, the displacement of the push rod 43 is short and insufficient to open the door 300. The set time is greater than or equal to 30 seconds and less than or equal to 75 seconds, for example, the set time is 30 seconds, 50 seconds, 75 seconds, etc.

[0071] The detection component can be used to detect the displacement of the push rod 43 after a set time after the user or the dishwasher issues a door opening command. If the detection component detects that the displacement of the push rod 43 is less than the set displacement, it indicates that the wax motor is not heated or the heating time is less than the set time, which means that the series circuit is in a disconnected state when the door opening command is issued, or the series circuit is disconnected after a period of conduction after the door opening command is issued, confirming that the door balance assembly 10 has failed.

[0072] In some embodiments, the driver 42 is a wax motor, and the detection component is used to detect the temperature of the wax motor to determine the on / off state of the series circuit. When the wax motor is connected to the control assembly 20, the wax motor is heated and expanded by electricity, thereby driving the push rod 43 to move. Similar to the detection component's use of detecting the displacement of the push rod 43, the detection component's detection of the wax motor's temperature can determine the connection state between the wax motor and the control assembly 20, and thus the on / off state of the series circuit.

[0073] In some embodiments, the detection component can detect the displacement of the push rod 43 and the temperature of the wax motor, and can more accurately determine the on-off state of the series circuit.

[0074] In some embodiments, as Figure 9 As shown, the automatic door opening assembly 40 includes a compression spring 44. After the wax motor drives the push rod 43 to move to the extreme position, it can compress the compression spring 44. The compression spring 44 can play a role in buffering and adjusting deviations, thereby ensuring the structural reliability of the automatic door opening assembly 40 and helping to reduce production costs.

[0075] In some embodiments of the present invention, Figure 3-Figure 6 As shown, the door balancing assembly 10 includes a position-limiting mating portion 12, and the pull cord 11 includes a first pull cord 111 and a second pull cord 113. The first pull cord 111 is connected between the housing 200 and the position-limiting mating portion 12, and the second pull cord 113 is connected between the door body 300 and the position-limiting mating portion 12. At least a portion of the first pull cord 111 forms a trigger section 112. The housing 200 is provided with a position-limiting portion 210, and the position-limiting mating portion 12 is located on a side of the position-limiting portion 210 near the second pull cord 113. When the door body 300 is closed, the second pull cord 113 is in a relaxed state, and the position-limiting mating portion 12 abuts against the position-limiting portion 210.

[0076] In the above-mentioned closed state of the door body 300, under the action of the limiting portion 210 and the limiting matching portion 12, the second pull rope 113 has no pre-tightening force; when the door body 300 needs to be opened, the door body 300 is not subjected to the tension from the second pull rope 113, and the door body 300 will rotate relative to the body 200 to open under the action of the downward force of its own center of gravity.

[0077] As the door body 300 rotates, the second pull cord 113 gradually stretches. When the door body 300 rotates to a certain door opening angle, the second pull cord 113 switches from a relaxed state to a taut state, and the door body 300 is at the desired predetermined door opening angle. It should be noted that when the second pull cord 113 switches to the taut state, the initial distance is released, the length of the first pull cord 111 remains unchanged, and the limiter 210 still abuts against the limiter 210, so that the door body 300 can maintain the predetermined door opening angle.

[0078] After opening, the door 300 typically needs to remain open for a period of time, such as during the drying phase, to fully dry the dishes. The door balancing assembly 10 maintains the door 300 at a predetermined opening angle without consuming electricity, thus reducing energy consumption. Its simple structure and low cost contribute to simplifying the structure of the dishwasher 1000 and reducing production costs. Furthermore, when closing the door, only the weight of the door 300 needs to be overcome, facilitating rapid closing and making operation more convenient and efficient.

[0079] In addition, it should be noted that the first pull rope 111 and the second pull rope 113 can be two pull ropes 11 or one pull rope 11, and the limiting fitting portion 12 is installed on the pull rope 11 to divide the pull rope 11 into two parts.

[0080] In an embodiment of the present application, the predetermined door opening angle can be flexibly set according to actual conditions such as the weight of the door body 300 and drying requirements, and can be adjusted by changing the length of the second pull rope 113, the setting position of the limiting fitting part 12, the fixed position of the limiting part 210, etc.

[0081] In some embodiments, as Figure 3-Figure 6 As shown, the door balancing assembly 10 includes an elastic member 13 connected to the first pull rope 111. The elastic member 13 can be deformed to apply a pulling force toward the limiting portion 210 to the limiting matching portion 12. The elastic member 13 can be a deformable component such as a tension spring.

[0082] When the door 300 is open, the user can control the door 300 to rotate as needed to further increase the door opening angle, that is, to make the door opening angle greater than the predetermined door opening angle. At this time, the first pull cord 111 can be in a taut state, the position-limiting mating portion 12 can be separated from the position-limiting portion 210, and the elastic member 13 is in a stretched state to provide tension to the door 300, so that the door 300 can reach a balanced state and hover at any opening angle greater than the predetermined door opening angle.

[0083] In some embodiments, when the door balancing assembly 10 is in a normal state, when the door body 300 is closed and open, the pull rope 11 as a whole is always in a straight state, and the elastic member 13 is in an extended state, so that any position of the pull rope 11 is formed into a trigger segment 112 to abut against the roller 321. When the pull rope 11 breaks at any position, the series circuit can be disconnected, so that the door body 300 cannot be opened.

[0084] In some embodiments, as Figure 5-Figure 6As shown, the door balancing assembly 10 may further include at least one guide wheel 14, which is mounted on the body 200 and formed as a rolling wheel for the pull rope 11 to roll. In an embodiment with a single guide wheel 14, the first pull rope 111 or the second pull rope 113 is wound around the guide wheel 14; in an embodiment with multiple guide wheels 14, the first pull rope 111 or the second pull rope 113 is wound around each guide wheel 14 to guide the pull rope 11 and facilitate control of the extension direction of the pull rope 11, thereby making the spatial arrangement more reasonable.

[0085] The dishwasher 1000 according to the embodiment of the present invention includes the door opening control system 100 according to the embodiment of the present invention. Because the door opening control system 100 according to the embodiment of the present invention has the aforementioned beneficial technical effects, the dishwasher 1000 according to the embodiment of the present invention can disconnect the series circuit when the door balancing assembly 10 fails to position the door body 300, thereby keeping the door body 300 in a closed state. This prevents the door body 300 from losing control and suddenly falling, thereby improving the safety of the dishwasher 1000.

[0086] The door opening control system 100 and the dishwasher 1000 according to a specific embodiment of the present invention are described in detail below with reference to the accompanying drawings. It is worth noting that the following description is merely illustrative and should not be construed as limiting the present invention.

[0087] like Figures 1-11 As shown, a dishwasher 1000 according to a specific embodiment of the present invention includes a door opening control system 100, a body 200 and a door body 300, and the door body 300 is rotatably installed on the door body 300 around a rotating shaft 230 through a hinge 310 to open or close the washing chamber of the body 200.

[0088] The door opening control system 100 includes two door balancing assemblies 10, a control assembly 20, two protection assemblies 30, an automatic door opening assembly 40, a human-machine interaction assembly 50, a door lock assembly 60, and a detection component. The two door balancing assemblies 10 are respectively located on the left and right sides of the door body 300, and the two protection assemblies 30 are arranged in a one-to-one correspondence with the two door balancing assemblies 10.

[0089] The door balancing assembly 10 includes an elastic member 13, a pull cord 11, a stopper 12, and two guide wheels 14. The pull cord 11 includes a first pull cord 111 and a second pull cord 113, each of which is wound around a guide wheel 14 to guide the pull cord 11. The front end of the elastic member 13 is mounted to the base 220 via a fastener 131, such as a bolt. The rear end of the elastic member 13 is connected to the rivet 114 of the first pull cord 111. The end of the first pull cord 111, away from the elastic member 13, is connected to the stopper 12. The portion of the first pull cord 111, located near the stopper 12 and below the roller 321, forms the trigger section 112. The front end of the stopper 12 is connected to the second pull cord 113, and the rivet 114 at the front end of the second pull cord 113 is connected to the hinge 310 of the door body 300. The position-limiting mating portion 12 is located in front of the position-limiting portion 210 of the housing 200, and the elastic member 13 is deformable to apply a pulling force toward the position-limiting portion 210 to the position-limiting mating portion 12. When the door 300 is closed, the second pull cord 113 is in a relaxed state and the position-limiting mating portion 12 abuts against the position-limiting portion 210.

[0090] The protection assembly 30 includes a protection switch 31 and a trigger 32. The protection switch 31 has a contact 323. The trigger 32 includes a roller 321 and a spring 322 connected to each other. The spring 322 partially extends downward in its non-deformed state. The roller 321 is located at the lower end of the spring 322 and is located above the trigger section 112. The contact 323 is located above the spring 322. The control assembly 20 includes a control box 21, a PCB control board 22 located within the control box, and a cover 23 for covering the control box 21. The control box 20 is located on the base 220. The PCB control board 22, the two protection switches 31, and the automatic door opening assembly 40 are connected to form a series circuit.

[0091] The door lock assembly 60 is used to lock the door body 300 and the machine body 200. The door lock assembly 60 is located on the door body 300. The automatic door opening assembly 40 includes a housing 41, a compression spring 44, a driver 42, and a push rod 43 installed within the housing 41. The housing 41 is installed on the machine body 200. The driver 42 is a wax motor. The rear end of the compression spring 44 is connected to the inner wall of the housing 41 and the front end is connected to the rear end of the wax motor. The front end of the wax motor is connected to the rear end of the push rod 43. The front end of the push rod 43 can extend from the housing 41 to apply thrust to the door body 300, driving the door lock 61 and the lock catch 62 of the door lock assembly 60 to unlock.

[0092] Under normal conditions, door balancing assembly 10 is functioning normally. Trigger segment 112 is stretched and abuts roller 321. Trigger segment 112 drives roller 321 upward, deforming spring 322 and triggering contact 323. This triggers protection switch 31, completing the series circuit. With the series circuit complete, control assembly 20 supplies power to the wax motor, which drives push rod 43 to unlock door lock assembly 60, allowing door 300 to automatically open.

[0093] In an abnormal state, the door balancing assembly 10 fails, the trigger section 112 separates from the roller 321, and the spring 322 returns to its original shape, causing the roller 321 to move downward and the spring 322 to separate from the contact 323. This deactivates the protection switch 31 and disconnects the series circuit. With the series circuit disconnected, the control assembly 20 stops supplying power to the wax motor, and the automatic door opening assembly 40 is unable to open the door body 300, leaving the door body 300 in a closed state.

[0094] Failure of the door balancing assembly 10 may include, but is not limited to, breakage of the elastic member 13, breakage of the draw cord 11, separation of the draw cord 11 from the elastic member 13, separation of the draw cord 11 from the hinge 310, and separation of the draw cord 11 from the retaining member 12. In particular, when the door 300 is opened to a large angle, such as 90°, the elastic member 13 is significantly deformed, and the draw cord 11 is subjected to greater stress, making the door balancing assembly 10 more susceptible to failure.

[0095] The detection component is used to detect the displacement of the push rod 43 to determine the on / off state of the series circuit. The human-computer interaction component 50 includes a control panel 51 and a display screen 52. The control panel 51 is connected to the detection component to determine the on / off state of the series circuit. The display screen 52 is used to issue an abnormality prompt message if the series circuit is determined to be disconnected.

[0096] After the dishwasher 1000 completes the dishwashing program, it can use the door balancing assembly 10 to make the door body 300 be in a balanced state at multiple angles to hover. In the event that the door balancing assembly 10 fails, the series circuit is disconnected, the protection assembly 30 and the wax motor are not powered, the door will not open automatically and may even fall quickly. At the same time, an abnormal lifting information will appear on the display screen 52, which is convenient for the user to carry out timely maintenance.

[0097] Other structures and operations of the door opening control system 100 and the dishwasher 1000 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0098] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0099] Throughout this specification, reference to terms such as "embodiment," "specific embodiment," and "example" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0100] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A door opening control system for a dishwasher, characterized in that: include a door balancing assembly, the door balancing assembly including a pull rope connected between the body and the door of the dishwasher, and the pull rope including a trigger section; A control component, a protection component and an automatic door opening component, wherein the protection component includes a protection switch and a trigger, the control component, the protection switch and the automatic door opening component are connected to form a series circuit, and the control component is suitable for controlling the automatic door opening component to open the door body when the series circuit is conductive, wherein: The trigger section is stretched straight in a normal state and contacts the trigger member, and drives the trigger member to trigger the protection switch, so that the series circuit is turned on; The trigger section is separated from the trigger member in an abnormal state, and the trigger member releases the triggering of the protection switch, so that the series circuit is disconnected.

2. The door opening control system of the dishwasher according to claim 1, characterized in that: The trigger member includes a roller, and the trigger section abuts against the roller in a normal state.

3. The door opening control system of the dishwasher according to claim 2, characterized in that: The trigger member also includes a spring piece connected to the roller. The trigger section drives the spring piece to deform to trigger the contact of the protection switch under normal conditions. The trigger section separates from the roller under abnormal conditions, and the spring piece returns to its original shape to release the triggering of the contact.

4. The door opening control system of the dishwasher according to claim 3, characterized in that: The spring sheet and the vertical projection of the contact point at least partially overlap, and the roller and the vertical projection of the trigger segment at least partially overlap, wherein, The elastic sheet at least partially extends downward in a non-deformed state, the roller is provided at the lower end of the elastic sheet, the roller is located on the upper side of the trigger section, and the contact is located on the upper side of the elastic sheet; or, The elastic sheet at least partially extends upwardly in a non-deformed state, the roller is provided at the upper end of the elastic sheet, the roller is located at the lower side of the trigger section, and the contact is located at the lower side of the elastic sheet.

5. The door opening control system of the dishwasher according to claim 1, characterized in that: The control component is used to supply power to the automatic door opening component when the series circuit is in a conducting state; the control component stops supplying power to the automatic door opening component when the series circuit is in a disconnected state.

6. The door opening control system of the dishwasher according to claim 1, characterized in that: There are two door balancing assemblies and two protection assemblies, and the two door balancing assemblies are spaced apart along the rotation axis of the door body. The two protection assemblies are arranged in a one-to-one correspondence with the two door balancing assemblies, and the two protection assemblies are connected in series to the same series circuit.

7. The door opening control system of the dishwasher according to claim 1, characterized in that: It also includes a door lock assembly, which is used to lock the door body and the machine body. The automatic door opening assembly includes a shell and a driving member and a push rod installed in the shell. The shell is installed in one of the door body and the machine body. The driving member is connected to one end of the push rod, and the other end of the push rod is suitable for extending out of the shell to apply a thrust to the other of the door body and the machine body to drive the door lock assembly to unlock.

8. The door opening control system of a dishwasher according to any one of claims 1 to 7, characterized in that: The door balancing assembly includes a position-limiting fitting portion, the pull rope includes a first pull rope and a second pull rope, the first pull rope is connected between the machine body and the position-limiting fitting portion, the second pull rope is connected between the door body and the position-limiting fitting portion, at least a portion of the first pull rope is formed as the trigger section, The machine body is provided with a limiting portion, and the limiting matching portion is located on a side of the limiting portion close to the second pull rope. When the door body is closed, the second pull rope is in a relaxed state and the limiting matching portion abuts against the limiting portion.

9. The door opening control system of the dishwasher according to claim 8, characterized in that: The door balancing assembly includes an elastic member connected to the first pull rope, and the elastic member is adapted to be deformed to apply a pulling force toward the limiting portion to the limiting matching portion.

10. A dishwasher, characterized in that: A door opening control system comprising the dishwasher according to any one of claims 1 to 9.

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