Door body driving device of dish washing machine and dish washing machine

Abstract

The utility model discloses a dish-washing machine door body driving device and a dish-washing machine, the dish-washing machine door body driving device comprises a matching piece, the matching piece can move relative to a machine body of the dish-washing machine, the matching piece is provided with a matching groove, and the matching groove is used for containing a hinge of a door body of the dish-washing machine; the driving assembly is connected with the matching piece, the driving assembly is suitable for driving the matching piece to move in the first direction so as to drive the hinge to rotate around the rotating axis in the first rotating direction, the door body is opened to the preset door opening angle, and the first direction intersects with the rotating axis of the hinge. According to the door body driving device of the dish-washing machine, the door body can be automatically opened to dry tableware after the dish-washing machine washes the tableware, the door body driving device can also be arranged at the position of the hinge to accurately control the rotation angle of the hinge, then the automatic opening speed of the door body is controlled, and the safety of automatic door opening is improved.

Description

Technical Field

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

[0002] After a dishwasher automatically washes dishes, the enclosed environment inside can cause residual moisture on the dishes if left unused for an extended period, leading to mold and bacterial growth. Automatic door opening technology is also used in dishwasher drying applications. After the dishwasher automatically washes dishes, the door automatically opens to a certain angle, allowing air to circulate inside and outside the dishwasher, discharging water vapor and drying the dishes.

[0003] However, in the related art, the automatic door opening speed of the dishwasher is uncontrollable, and it is easy for the door to open too quickly, causing the user to be injured or the dishwasher to be damaged, resulting in poor safety. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a dishwasher door drive device that can control the speed of automatic door opening, thereby reducing the risk of injuries to users or damage to the dishwasher caused by excessively fast door opening and providing improved safety.

[0005] Another object of the present invention is to provide a dishwasher having the door driving device.

[0006] According to an embodiment of the present invention, the door driving device of the dishwasher includes: a mating part, which is movable relative to the body of the dishwasher, and the mating part has a mating groove, and the mating groove is used to accommodate the hinge of the door of the dishwasher; a driving assembly, which is connected to the mating part, wherein the driving assembly is suitable for driving the mating part to move in a first direction to drive the hinge to rotate around the rotation axis in a first rotation direction, so that the door body is opened to a predetermined door opening angle, and the first direction intersects with the rotation axis of the hinge.

[0007] According to the door drive device of the dishwasher according to the embodiment of the present invention, the door can automatically open the door to dry the dishes after the dishwasher washes the dishes. The door drive device can also be set at the hinge to accurately control the rotation angle of the hinge, thereby controlling the speed of automatic opening of the door and improving the safety of automatic door opening.

[0008] In addition, the door drive device 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 drive assembly is also suitable for driving the mating part to move in a second direction to drive the hinge to rotate around the rotation axis in a second rotation direction to close the door body. The first direction is opposite to the second direction. The first rotation direction is opposite to the second rotation direction.

[0010] According to some embodiments of the present invention, the drive assembly includes a drive member, a gear set and a rack, the gear set includes at least one gear, the gear set is meshed and connected between the drive member and the rack, the rack is movable along the first direction and the second direction, the rack is connected to the mating member, the drive member is used to drive the gear set to rotate and thereby drive the rack to move, the first direction is opposite to the second direction.

[0011] According to some embodiments of the present invention, the gear set includes a plurality of gears, the drive assembly includes a transmission component, at least two of the gears are connected through the transmission component, and the transmission component includes a connecting part and a connecting fitting part respectively fixedly connected to the two gears, the connecting part and the connecting fitting part are in contact and fit, and the rotation axes of the connecting part and the connecting fitting part are parallel, and when the relative torsional force between the connecting part and the connecting fitting part is less than or equal to a critical value, the connecting part and the connecting fitting part rotate synchronously, so that the transmission connection between the two adjacent gears is in a connected state; when the relative torsional force between the connecting part and the connecting fitting part is greater than the critical value, the connecting part and the connecting fitting part rotate relative to each other, so that the transmission connection between the two adjacent gears is in a disconnected state.

[0012] According to some embodiments of the present invention, the connecting portion has a first protrusion and a second protrusion alternately arranged around the rotation axis, and in the circumferential direction of the connecting portion, the protruding height of the first protrusion gradually decreases and the protruding height of the second protrusion gradually increases, and the connecting mating portion includes a plurality of protrusions arranged around the rotation axis, a part of the protrusions abutting against the first protrusions, and another part of the protrusions abutting against the second protrusions; when the relative torsional force is greater than the critical value, each of the protrusions contacts the first protrusion and the second protrusion in turn; wherein, the first protrusion and the second protrusion are made of elastic material, and / or the protrusions are made of elastic material.

[0013] According to some embodiments of the present invention, the plurality of gears include a first gear and a second gear, the inner circumference of the first gear is provided with the connecting portion and the outer circumference is provided with a tooth portion, the outer circumference of the second gear is provided with a tooth portion, and the connecting fitting portion is provided at one axial end of the second gear and is located inside the first gear.

[0014] According to some embodiments of the present invention, when the opening angle of the door body is greater than the set door opening angle, the hinge is separated from the matching groove, and the set door opening angle is greater than or equal to the predetermined door opening angle.

[0015] According to some embodiments of the present invention, the door body driving device also includes a first track and a second track that are connected, the extension direction of the first track is parallel to the first direction, the extension direction of the second track intersects with the first direction, the second track is located on one side of the first track along the first direction and on the side of the first track away from the hinge, the mating part has a first sliding part and a second sliding part, the first sliding part is slidable along the first track, and the second sliding part is slidable along the first track and the second track, wherein, when the opening angle of the door body is less than or equal to the predetermined door opening angle, the second sliding part is located on the first track; when the opening angle of the door body is greater than the set door opening angle, the second sliding part is located on the second track.

[0016] According to some embodiments of the present invention, the door driving device includes an installation box, which includes a box body and a cover body, the box body is provided with a first groove, the cover body is provided with a second groove, and the cover body is covered on the box body so that the first groove and the second groove cooperate to form the first track and the second track, and the first sliding part and the second sliding part both include protrusions located on both sides of the mating part, and the protrusions on both sides are movably inserted in the first groove and the second groove, respectively.

[0017] According to some embodiments of the present invention, the groove side walls of the mating groove include a first groove wall and a second groove wall relative to each other, the second groove wall being located on one side of the first groove wall along the first direction, and when the opening angle of the door body is less than or equal to the predetermined door opening angle, the projections of the first groove wall, the second groove wall and the hinge along the first direction partially overlap; when the opening angle of the door body is greater than the set door opening angle, the projections of the second groove wall and the hinge along the first direction are staggered, and the set door opening angle is greater than or equal to the predetermined door opening angle.

[0018] According to some embodiments of the present invention, the door body driving device includes a limiting component, and the mating component includes a limiting mating part. When the opening angle of the door body is greater than the set door opening angle, the limiting component and the limiting mating part are offset against each other to keep the second sliding part in the second track, and the set door opening angle is greater than or equal to the predetermined door opening angle; when the opening angle of the door body is less than the predetermined door opening angle, the limiting component is separated from the limiting mating part.

[0019] According to some embodiments of the present invention, when the opening angle of the door body is less than or equal to the predetermined door opening angle, the limit fitting portion extends obliquely along the first direction toward the side close to the limit component; when the opening angle of the door body is greater than the set door opening angle, the limit fitting portion extends in the horizontal direction.

[0020] According to some embodiments of the present invention, the limiting component includes a limiting elastic component and a limiting component, the limiting component is used to offset the limiting matching part, and the limiting elastic component is used to apply an elastic force along a second direction to the limiting component, and the first direction is opposite to the second direction.

[0021] According to some embodiments of the present invention, the driving member is configured to work for a predetermined time to open the door body to the predetermined door opening angle or close from the predetermined door opening angle; or, the door body driving device includes a first trigger member and a second trigger member arranged along the first direction, and the first trigger member and the second trigger member are respectively communicated with the driving member, and when the driving member drives the door body to open to the predetermined door opening angle, the rack or the mating member triggers the second trigger member to stop driving the driving member; when the driving member drives the door body to close in place, the rack or the mating member triggers the first trigger member to stop driving the driving member.

[0022] According to an embodiment of the present invention, a dishwasher includes a machine body, a door body and a door body driving device of the dishwasher according to an embodiment of the present invention, wherein the door body includes a door body and a hinge, the door body is rotatably connected to the machine body through the hinge, and the hinge has a mating protrusion, and the mating protrusion is suitable for being plugged into and mated with the mating groove of the mating part.

[0023] According to the dishwasher of the embodiment of the present invention, the movement path of the engaging member is at least partially located within the rotation radius of the engaging protrusion.

[0024] 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

[0025] 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:

[0026] Figure 1 1 is a partial structural diagram of a dishwasher according to an embodiment of the present invention, wherein the door is in a closed state, and the arrow indicates the opening direction of the door in the closed state;

[0027] Figure 2 yes Figure 1 The middle frame shows a partial enlarged view of point A;

[0028] Figure 3 1 is a partial structural diagram of a dishwasher according to an embodiment of the present invention, wherein the door is in an open state;

[0029] Figure 4 yes Figure 3 The middle frame shows a partial enlarged view of point B;

[0030] Figure 5 2 is a schematic diagram of a portion of the structure of a dishwasher according to an embodiment of the present invention, wherein the arrows indicate the movement directions of the hinge and the mating member during manual door opening, when the door opening angle is less than the set door opening angle;

[0031] Figure 6 1 is a partial structural diagram of a dishwasher according to an embodiment of the present invention, wherein the arrow indicates the movement direction of the drive assembly during the automatic closing process of the door;

[0032] Figure 7 1 is a partial structural diagram of a dishwasher according to an embodiment of the present invention, wherein arrows indicate the movement directions of the mating member and the limiting member during manual door opening, when the door opening angle is greater than the set door opening angle;

[0033] Figure 8 1 is a partial structural diagram of a dishwasher according to an embodiment of the present invention, wherein arrows indicate the movement directions of the hinge, the mating member, and the limiting member during manual closing of the door;

[0034] Figure 9 This is an exploded view of a door driving device according to an embodiment of the present utility model;

[0035] Figure 10 This is a schematic structural diagram of a first gear and a second gear according to an embodiment of the present utility model;

[0036] Figure 11 yes Figure 10 Exploded diagram.

[0037] Reference numerals:

[0038] Dishwasher 1000; body 200; door 300; door body 310; hinge 320; mating protrusion 3201;

[0039] Door driving device 100;

[0040] Matching member 10; matching groove 11; first groove wall 111; second groove wall 112; first sliding portion 121; second sliding portion 122; protrusion 123; position-limiting matching portion 13;

[0041] Drive assembly 20; drive member 21; transmission component 22; connecting portion 221; first protrusion 2211; second protrusion 2212; connecting fitting portion 222; protrusion 2221; first gear 223; second gear 224; gear set 23; gear 231; intermediate gear 232; rack 24;

[0042] Mounting box 30; box body 31; first groove 311; cover 32; first track 331; second track 332;

[0043] Limiting component 40; limiting elastic member 41; limiting member 42;

[0044] Door balancing assembly 50; door balancing elastic member 51; pull rope 52; guide wheel 53. DETAILED DESCRIPTION

[0045] 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.

[0046] 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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.

[0047] 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.

[0048] The door driving device 100 of the dishwasher 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0049] Reference Figures 1-11As shown, the door driving device 100 of the dishwasher 1000 according to the embodiment of the present invention may include: a matching component 10 and a driving assembly 20.

[0050] Specifically, the fitting 10 can move relative to the body 200 of the dishwasher 1000. For example, in some embodiments, Figure 1-Figure 7 As shown, Figure 2 The fitting 10 shown is moved upwards to Figure 4 The status shown, Figure 4 The fitting 10 shown is moved upwards to Figure 7 Status shown.

[0051] The fitting 10 has a fitting groove 11, which is used to accommodate the hinge 320 of the door 300 of the dishwasher 1000. The hinge 320 and the fitting groove 11 can be plug-fitted or magnetically fitted. For example, in some embodiments, Figure 2 As shown, the rear end of the hinge 320 is a mating protrusion 3201, which can be inserted into the mating groove 11 to engage with the mating groove 11, so that the hinge 320 can move with the mating piece 10 during the mating process of the mating protrusion 3201 and the mating groove 11.

[0052] The fitting 10 moves relative to the body 200 to drive the hinge 320 to move relative to the body 200. By controlling the movement of the fitting 10, the rotation angle of the hinge 320 can be controlled, thereby facilitating the dishwasher 1000 to open and close the door 300.

[0053] The driving assembly 20 is connected to the fitting 10, and the driving assembly 20 can drive the fitting 10 to move in a first direction (eg Figure 1-Figure 5 The hinge 320 moves in a first rotation direction (eg, Figure 1-Figure 5 The door body 300 is rotated in the counterclockwise direction as shown to open the door to a predetermined door opening angle, and the first direction intersects with the rotation axis of the hinge 320.

[0054] The angle between the first direction and the rotation axis of the hinge 320 can be an acute angle, a right angle, or an obtuse angle, so that the driving member 20 drives the hinge 320 to move along the first direction, thereby driving the hinge 320 to rotate along the first rotation direction around the rotation axis, and the door body 300 can be opened to the predetermined door opening angle. Figure 1-Figure 4As shown, the first direction is from bottom to top, and the rotation axis of hinge 320 is parallel to the width direction of dishwasher 1000 (left-right direction in the figure), making the first direction perpendicular to the rotation axis of hinge 320. Drive assembly 20 drives mating member 10 upward, causing hinge 320 to rotate counterclockwise about the rotation axis, gradually increasing the opening angle of door body 300 until door body 300 opens to a predetermined opening angle.

[0055] The door 300 opens to a predetermined angle, allowing air to circulate inside and outside the dishwasher 1000, thereby drying the dishes inside the dishwasher 1000. In the embodiment of the present invention, the predetermined angle can be flexibly set according to the actual conditions such as the weight of the door 300 and the drying requirements, and can also be adjusted by changing the stroke size of the driving component 20 driving the matching member 10. After the dishwasher 1000 automatically washes the dishes, the door 300 can be automatically opened by the door driving device 100 to dry the dishes.

[0056] The door 300 can be opened automatically by driving the fitting 10 to move through the driving assembly 20, thereby driving the hinge 320 to rotate. The driving assembly 20 applies a driving force to the fitting 10 to move the fitting 10. For example, the driving assembly 20 may include a motor.

[0057] The door drive device 100 of the present application cooperates with the hinge 320 to directly control the rotation angle of the hinge 320, and the door drive device 100 can be set near the hinge 320. Compared with the related art of placing the automatic door opening device on the top of the dishwasher to push the door open, the door drive device 100 of the present application facilitates precise control of the rotation angle of the hinge 320 to control the speed of automatic door opening. For example, by controlling the driving force of the drive assembly 20 on the mating member 10, the movement speed of the mating member 10 is controlled to control the rotation speed of the hinge 320. This makes it less likely that the user will be injured or the dishwasher 1000 will be damaged due to the door opening speed being too fast. It is safer and helps to extend the service life of the dishwasher 1000.

[0058] According to the door drive device 100 of the dishwasher 1000 according to the embodiment of the present invention, the door 300 can be automatically opened to dry the dishes after the dishwasher 1000 washes the dishes. The door drive device 100 can also be set at the hinge 320 to accurately control the rotation angle of the hinge 320, thereby controlling the speed of automatic opening of the door 300, thereby improving the safety of automatic door opening.

[0059] In some embodiments of the present invention, Figures 1-9 As shown, the drive assembly 20 can also drive the fitting 10 in a second direction (eg Figure 3 and Figure 6 to move the hinge 320 in a second rotation direction (eg, Figure 3 and Figure 6 The first direction is opposite to the second direction, and the first rotation direction is opposite to the second rotation direction.

[0060] The rotation axis here is the rotation axis of the hinge 320. The hinge 320 rotates along the second rotation direction around the rotation axis, so that the opening angle of the door body 300 gradually decreases.

[0061] For example, in some embodiments, Figure 1-Figure 4 As shown, the rotation axis of hinge 320 is parallel to the left-right direction, with the first direction being from bottom to top and the second direction being from top to bottom, such that the first and second directions are opposite. Drive assembly 20 drives mating member 10 downward, thereby causing hinge 320 to rotate clockwise about the rotation axis, gradually reducing the opening angle of door body 300 and gradually closing door body 300 from an open state.

[0062] The driving assembly 20 drives the fitting 10 to move, thereby driving the hinge 320 to rotate, thereby achieving automatic closing of the door body 300.

[0063] After the dishwasher 1000 automatically washes the dishes, the door 300 is automatically opened by the door drive device 100 to dry the dishes. If the door 300 is not closed for a long time after automatically opening, dust, cockroaches, flies, etc. may enter the dishwasher 1000 and contaminate the washed dishes. Therefore, after automatically opening the door 300 to dry the dishes, the door 300 needs to be closed to protect the dishes.

[0064] In some related technologies, a dishwasher automatically opens the door to dry the dishes after washing them, but the dishwasher does not have the function of automatically closing the door. After automatically opening the door to dry the dishes, the user needs to manually close the door, which is inconvenient to operate.

[0065] The door drive device 100 of the present application can automatically open the door 300 to dry the dishes, and can also automatically close the door 300 after automatically opening the door 300 for a period of time to protect the dishes. After the door is automatically opened, the user does not need to pay attention to the drying state of the dishwasher 1000 at all times and then manually close the door, which can free the user's hands more thoroughly. The dishwasher 1000 has a high degree of automation and is easy to operate.

[0066] In addition, the door drive device 100 of the present application cooperates with the hinge 320 to directly control the rotation angle of the hinge 320. The door drive device 100 can be set near the hinge 320, which is convenient for accurately controlling the rotation angle of the hinge 320 to control the speed of automatic door opening and automatic door closing. It is less likely that the user will be injured or the dishwasher 1000 will be damaged due to the door opening and closing speed being too fast, thereby improving the safety of the automatic opening and closing of the dishwasher 1000.

[0067] In some embodiments of the present invention, Figure 1-Figure 2 and Figure 9 As shown, the driving assembly 20 includes a driving member 21 , a gear set 23 and a rack 24 . The gear set 23 includes at least one gear 231 . The gear set 23 is meshed and connected between the driving member 21 and the rack 24 .

[0068] The driving member 21 is used to provide driving force, for example, the driving member 21 is a motor. The driving force of the driving member 21 is transmitted to the matching member 10 through the transmission member 22 to drive the matching member 10 to move.

[0069] The number of gears 231 in the gear set 23 can be one, two, or more. Changing the number of gears 231 in the gear set 23 can change the transmission ratio of the gear set 23, thereby varying the driving force transmitted to the mating member 10 without changing the driving force of the driver 21. This in turn adjusts the travel of the mating member 10 and the rotation angle of the hinge 320. The number of gears 231 in the gear set 23 can be flexibly adjusted based on the desired rotation angle of the hinge 320.

[0070] The rack 24 is movable in first and second directions. It is connected to the mating member 10, and the driver 21 is used to drive the gear set 23 to rotate, thereby driving the rack 24 to move. The rack 24 transmits the driving force from the driver 21 to the gear set 23 to the mating member 10, allowing the rack 24 and the mating member 10 to move in the first and second directions under the drive of the driver 21. This in turn changes the rotation angle of the hinge 320 and provides a more stable transmission. The connection between the rack 24 and the mating member 10 can be a fixed connection or a hinged connection.

[0071] In some embodiments, as Figure 1-Figure 2 and Figures 9-11 As shown, the gear set 23 includes multiple gears 231, the drive assembly 20 includes a transmission component 22, and at least two gears 231 are connected through the transmission component 22. The transmission component 22 can control the transmission connection between at least two gears 231 in the gear set 23 to be in a connected state or a disconnected state.

[0072] Specifically, the transmission component 22 includes a connecting portion 221 and a connecting mating portion 222 respectively fixedly connected to the two gears 231. The connecting portion 221 and the connecting mating portion 222 are in contact and mated, so that the transmission connection between the two gears 231 connected by the transmission component 22 is in a connected state, so that the driving member 21 of the driving member 21 is transmitted to the mating member 10 through the gear set 23 and the rack 24.

[0073] For example, the driving member 21 drives the gear set 23 to move, so as to drive one of the connecting part 221 and the connecting fitting part 222 to move through a gear 231, and through the contact and fit of the connecting part 221 and the connecting fitting part 222, the other of the connecting part 221 and the connecting fitting part 222 drives another gear 231 to move, so as to drive the fitting member 10 to move through the rack 24, and then the fitting member 10 drives the hinge 320 to rotate, so as to control the rotation angle of the hinge 320, for example, to realize automatic opening or automatic closing of the door body 300.

[0074] Once the contact and fit between the connecting portion 221 and the connecting mating portion 222 fails, the transmission function of the transmission component 22 fails, and the transmission connection between the two gears 231 in the gear set 23 fails, causing the transmission connection between the rack 24 and the driving member 21 to be disconnected, and the driving force of the driving member 21 will not be able to be transmitted to the rack 24 and then to the mating member 10.

[0075] The rotation axis of the connecting portion 221 is parallel to the rotation axis of the connecting fitting portion 222, which is beneficial to increasing the contact area of ​​the connecting portion 221 and the connecting fitting portion 222, making it less likely for the connecting portion 221 and the connecting fitting portion 222 to fail in contact under normal working conditions, thereby improving the transmission stability of the transmission component 22.

[0076] When the relative torsional force between the connecting portion 221 and the mating portion 222 is less than or equal to a critical value, the connecting portion 221 and the mating portion 222 rotate synchronously, the connecting portion 221 and the mating portion 222 engage and mate, and the transmission connection between the two adjacent gears 231 is in a connected state. When the relative torsional force between the connecting portion 221 and the mating portion 222 is greater than a critical value, the connecting portion 221 and the mating portion 222 rotate relative to each other, the engagement between the connecting portion 221 and the mating portion 222 fails, and the transmission connection between the two adjacent gears 231 is disconnected.

[0077] The relative torsional force between the connecting portion 221 and the connecting fitting portion 222 is the interaction force between the connecting portion 221 and the connecting fitting portion 222 , and the critical value is the value of the relative torsional force when the connecting portion 221 and the connecting fitting portion 222 rotate relative to each other.

[0078] When the hinge 320 is driven to rotate, such as to achieve automatic door closing, if a person, such as a user's hand, is accidentally placed between the door body 300 and the machine body 200, the door body 300 will continue to close, potentially causing injury to the person. However, the present application reduces the risk of injury by providing contact and engagement between the connecting portion 221 and the connecting and engaging portion 222.

[0079] Specifically, during the automatic door closing process, the human body between the door body 300 and the machine body 200 will exert an obstructing force on the door body 300 to prevent the door body 300 from closing. The door body 300 will transfer the obstructing force to the hinge 320, and the hinge 320 will transfer the obstructing force to the mating part 10 and then to the other one of the connecting part 221 and the connecting mating part 222 to hinder its rotation, and the rotation speed of the other one of the connecting part 221 and the connecting mating part 222 will be reduced. One of the connecting part 221 and the connecting matching part 222 driven by the driving member 21 maintains the original speed rotation, and the rotation speed of one of the connecting part 221 and the connecting matching part 222 is greater than the rotation speed of the other of the connecting part 221 and the connecting matching part 222, which will cause the relative torsional force of the connecting part 221 and the connecting matching part 222 to be greater than the critical value, and the contact matching of the connecting part 221 and the connecting matching part 222 fails. The door body drive device 100 changes from a normal working state to an abnormal working state, and the closing action of the door body 300 stops, thereby protecting the user when the human body is clamped, making the user less likely to be clamped, and having better safety.

[0080] When the relative torsional force is less than or equal to the critical value, the connecting portion 221 and the connecting fitting portion 222 can maintain synchronous rotation through elastic force or friction force. Figure 2 and Figure 10-11 As shown, the connecting portion 221 has a first protrusion 2211 and a second protrusion 2212 alternately arranged around the rotation axis. Along the circumference of the connecting portion 221, the protruding height of the first protrusion 2211 gradually decreases, while the protruding height of the second protrusion 2212 gradually increases. The first protrusion 2211 and the second protrusion 2212 can protrude toward or away from the rotation axis of the connecting portion 221. In the rotation direction of the connecting portion 221, the first protrusion 2211 forms a downward slope, while the second protrusion 2212 forms an upward slope.

[0081] For example, in some specific embodiments, Figure 2 and Figure 10-11 As shown, the first protrusion 2211 and the second protrusion 2212 protrude inwardly toward the rotation axis of the connecting portion 221, and the connecting portion 221 rotates counterclockwise around the rotation axis. In the counterclockwise direction, the inward protrusion height of the first protrusion 2211 gradually decreases to form a downhill section, and the inward protrusion height of the second protrusion 2212 gradually increases to form an uphill section.

[0082] The connecting portion 222 includes a plurality of protrusions 2221 arranged around the rotation axis. The protrusions 2221 can protrude toward or away from the rotation axis of the connecting portion 222. Some of the protrusions 2221 abut against the first protrusion 2211, while others abut against the second protrusion 2212. That is, some of the protrusions 2221 abut against the downhill section, while others abut against the uphill section.

[0083] It should be noted that, for ease of understanding, Figures 1-11 The portion between the first convex portion 2211 and the second convex portion 2212 is offset against the protruding portion 2221 . In the actual transmission process, a portion of the protruding portion 2221 is always offset against the downhill section, and the other portion of the protruding portion 2221 is always offset against the uphill section.

[0084] When the relative torsional force is greater than a critical value, each protrusion 2221 sequentially contacts the first protrusion 2211 and the second protrusion 2212. The first protrusion 2211 and the second protrusion 2212 are made of an elastic material, or the protrusion 2221 is made of an elastic material, or the protrusion 2221, the first protrusion 2211, and the second protrusion 2212 are made of an elastic material, so that at least one of the connecting portion 221 and the connecting mating portion 222 can deform, allowing the connecting portion 221 and the connecting portion 221 to rotate synchronously or relative to each other. For example, in some embodiments, the protrusion 2221 can be an elastic member that is deformable circumferentially and radially along the connecting mating portion 222, or the protrusion 2221 can be an elastic member that is deformable radially along the connecting mating portion 222, such as a spring.

[0085] When the relative torsional force is less than or equal to the critical value, the protrusion 2221 abuts against the uphill section, so that the connecting portion 221 and the connecting fitting portion 222 form a connection relationship similar to gear meshing, and the transmission is more stable.

[0086] When the relative torsional force is greater than the critical value, the connecting portion 221 and the connecting fitting portion 222 rotate relative to each other, so that the protrusion 2221 that abuts against the uphill section contacts the adjacent downhill section, then contacts the adjacent uphill section, then contacts the adjacent downhill section, and so on in the direction of rotation, so as to contact the first protrusion 2211 and the second protrusion 2212 in sequence, while the protrusion 2221 that abuts against the downhill section contacts the adjacent uphill section, then contacts the adjacent downhill section, then contacts the adjacent uphill section, and so on in the direction of rotation, so as to contact the first protrusion 2211 and the second protrusion 2212 in sequence, so as to reduce the possibility of all the protrusions 2221 partially contacting the uphill section, the downhill section, the uphill section and the downhill section in sequence.

[0087] All the protrusions 2221 are in contact with the uphill section, and the relative torsional force between the connecting portion 221 and the connecting fitting portion 222 suddenly increases. All the protrusions 2221 are in contact with the downhill section, and the relative torsional force between the connecting portion 221 and the connecting fitting portion 222 suddenly decreases. All the protrusions 2221 are in partial contact with the area between the uphill section and the downhill section, and the relative torsional force between the connecting portion 221 and the connecting fitting portion 222 is likely to drop to zero. At this time, the connecting portion 221 and the connecting fitting portion 222 are in neutral. All the protrusions 2221 are in partial contact with the uphill section, the downhill section, and the uphill section and the downhill section in turn, resulting in a dramatic change in the relative torsional force. The speed of relative rotation between the connecting portion 221 and the connecting fitting portion 222 is uncontrollable, and problems such as the door body 300 getting stuck are likely to occur, increasing the risk of people being pinched.

[0088] In the actual transmission process of the present application, a part of the protrusion 2221 is always offset against the downhill section, and the other part of the protrusion 2221 is offset against the uphill section, which can reduce the risk of neutral gear, make the relative rotation speed between the connecting part 221 and the connecting matching part 222 more controllable, and is less likely to cause the door body 300 to get stuck, reduce the risk of human body being pinched, and improve safety.

[0089] In some embodiments, as Figure 2 and Figure 10 As shown, multiple gears 231 include a first gear 223 and a second gear 224. The inner circumference of the first gear 223 is provided with a connecting portion 221 and the outer circumference is provided with a tooth portion. The outer circumference of the second gear 224 is provided with a tooth portion. The connecting fitting portion 222 is provided at one axial end of the second gear 224 and is located inside the first gear 223.

[0090] The first gear 223 and the second gear 224 are connected in a transmission manner via the connecting portion 221 and the connecting mating portion 222. For example, in some embodiments, a connection similar to gear meshing is achieved via the first protrusion 2211, the second protrusion 2212, and the protrusion 2221. The first gear 223 can also mesh with other components, such as the driver 21 or the rack 24, via the teeth on its outer peripheral surface. The second gear 224 can also mesh with other components, thereby facilitating meshing transmission between the driver 21, the gear set 23, the rack 24, and the mating component 10, and achieving more stable transmission.

[0091] In some embodiments of the present invention, Figure 5 and Figure 7-Figure 8As shown, when the opening angle of the door body 300 is greater than the set door opening angle, the hinge 320 separates from the mating groove 11, and the set door opening angle is greater than or equal to the predetermined door opening angle. When the opening angle of the door body 300 is greater than the predetermined door opening angle, the hinge 320 and the mating groove 11 are not necessarily separated. For example, in an embodiment in which the set door opening angle is greater than the predetermined door opening angle, the hinge 320 and the mating groove 11 do not separate when the opening angle of the door body 300 is greater than the predetermined door opening angle and less than the set door opening angle. In an embodiment in which the set door opening angle is equal to the predetermined door opening angle, the hinge 320 and the mating groove 11 separate when the opening angle of the door body 300 is greater than the predetermined door opening angle.

[0092] The door driving device 100 of the present application can automatically open the door 300 to a predetermined door opening angle, can also automatically close the door 300 from the predetermined door opening angle, and can also realize manual door opening and closing. For example, the door driving device 100 can manually open the door 300 to a value greater than the predetermined door opening angle, so that the hinge 320 is separated from the mating groove 11. After being freed from the constraint of the mating groove 11, the hinge 320 can move freely, so that the door 300 can be opened to any angle greater than the predetermined door opening angle to facilitate the removal and placement of tableware. The door 300 in the open state can also be manually closed.

[0093] Therefore, the door driving device 100 can not only realize automatic opening and closing of the door 300 to dry dishes, but also realize manual opening and closing of the door 300 to take and place dishes, and is highly practical.

[0094] In some embodiments including the transmission component 22, during the manual door opening and closing process, after the force applied by the human hand to the door body 300 is transmitted to the mating component 10, the relative torsional force between the connecting portion 221 and the connecting mating portion 222 is greater than a critical value, and the connecting portion 221 and the connecting mating portion 222 rotate relative to each other, making the manual door opening and closing process less susceptible to the influence of the driving component 20, making the automatic door opening and closing process and the manual door opening and closing process independent of each other, reducing the mutual interference between the automatic door opening and closing and the manual door opening and closing, and improving the operational stability of the automatic door opening and closing and the manual door opening and closing.

[0095] When manually opening the door 300, the user opens the door 300, causing the hinge 320 to rotate, which in turn causes the mating member 10 to move. The movement of the mating member 10 can gradually separate the rotating hinge 320 from the mating member 10. For example, in some embodiments, the mating member 10 moves upward, causing the hinge 320 on the front side of the mating member 10 to rotate upward and forward to gradually separate from the mating groove 11.

[0096] The fitting member 10 may also be rotated in a direction away from the hinge 320 so as to separate the rotating hinge 320 from the fitting member 10 by the rotating fitting member 10. For example, in some embodiments, Figure 5 and Figure 7-Figure 8 As shown, the door driving device 100 further includes a first track 331 and a second track 332 that are connected. The first track 331 extends in a direction parallel to the first direction, while the second track 332 extends in a direction intersecting the first direction. The second track 332 is located on one side of the first track 331 along the first direction and on the side of the first track 331 facing away from the hinge 320. The mating component 10 includes a first sliding portion 121 and a second sliding portion 122. The first sliding portion 121 is slidable along the first track 331, and the second sliding portion 122 is slidable along the first track 331 and the second track 332.

[0097] Among them, such as Figure 5 As shown, when the opening angle of the door body 300 is less than or equal to the predetermined door opening angle, the second sliding portion 122 is located on the first track 331. Figure 7-Figure 8 As shown, when the opening angle of the door body 300 is greater than the set door opening angle, the second sliding portion 122 is located on the second track 332 .

[0098] For example, in some embodiments, Figure 2-Figure 9 As shown, the second track 332 is connected to the upper end of the first track 331. During the opening process of the door body 300, the first sliding portion 121 moves upward along the first track 331. After the opening angle of the door body 300 is greater than the predetermined door opening angle, the first sliding portion 121 moves upward, and the second sliding portion 122 rotates clockwise relative to the first sliding portion 121. The rotation axis of the second sliding portion 122 extends in the left-right direction. The position of the rotation axis is the center line of the first sliding portion 121 and moves upward with the first sliding portion 121, causing the second sliding portion 122 to slide from the first track 331 into the second track 332. The rotation axis of the second sliding portion 122 moves with the movement of the first sliding portion 121, causing the mating component 10 to move and rotate as a whole.

[0099] The second sliding portion 122 slides from the first track 331 into the second track 332, allowing the mating piece 10 to move and rotate in a direction away from the hinge 320 to release the hinge 320 from the mating groove 11. The separation of the hinge 320 from the mating groove 11 is faster and more complete, and manual opening and closing of the door is more convenient.

[0100] For example, in some specific embodiments, Figure 5 and Figure 7-Figure 8As shown, the first track 331 extends in the vertical direction, and the second track 332 extends in the front-to-back direction. The second track 332 is located on the upper and rear side of the first track 331. A bend is formed between the first track 331 and the second track 332 to facilitate sliding of the second sliding portion 122 between the first track 331 and the second track 332. The second sliding portion 122 slides from the first track 331 into the second track 332, causing the mating component 10 to move upward and backward and rotate. The hinge 320 on the front side of the mating component 10 rotates upward and forward, accelerating the separation of the hinge 320 from the mating groove 11.

[0101] In some embodiments including a first track 331 and a second track 332, as Figure 2 and Figure 4-Figure 9 As shown, the door drive device 100 includes an installation box 30, which includes a box body 31 and a cover body 32. The box body 31 is provided with a first groove 311, and the cover body 32 is provided with a second groove. The cover body 32 is covered on the box body 31, so that the first groove 311 and the second groove cooperate to form a first track 331 and a second track 332. The first sliding portion 121 and the second sliding portion 122 each include a protrusion 123 located on both sides of the mating member 10, and the protrusions 123 on both sides are movably inserted into the first groove 311 and the second groove, respectively.

[0102] For example, in some embodiments, Figure 6 As shown, the first groove 311 and the second groove are opposite to each other in the left-right direction, the first groove 311 constitutes a part of the first track 331 and the second track 332, and the second groove constitutes another part of the first track 331 and the second track 332, so that the first groove 311 and the second groove cooperate to form the first track 331 and the second track 332.

[0103] The first groove 311 of the box body 31 and the second groove of the cover body 32 jointly define the first track 331 and the second track 332. The matching piece 10 can be slidably installed on the first track 331 and the second track 332, so that the movement of the matching piece 10 is more stable and the door opening and closing process is smoother.

[0104] In some embodiments, as Figure 5 and Figure 7-Figure 8 As shown, the groove sidewall of the matching groove 11 includes a first groove wall 111 and a second groove wall 112 opposite to each other, and the second groove wall 112 is located on one side of the first groove wall 111 along the first direction (for example Figure 5 and Figure 7When the door body 300 is opened at an angle less than or equal to the predetermined door opening angle, the projections of the first groove wall 111, the second groove wall 112, and the hinge 320 along the first direction partially overlap. When the door body 300 is opened at an angle greater than the predetermined door opening angle, the projections of the second groove wall 112 and the hinge 320 along the first direction are offset.

[0105] During manual door opening, the hinge 320 abuts against the second groove wall 112. This application makes the second groove wall 112 shorter than the first groove wall 111, which helps to speed up the separation of the hinge 320 from the limiting groove and makes manual door opening and closing more convenient.

[0106] In some embodiments in which the hinge 320 is gradually separated from the mating part 10 by moving the mating part 10, the mating part 10 moves upward, the hinge 320 on the front side of the mating part 10 rotates upward and forward, and the length of the second groove wall 112 on the upper side along the front-to-back direction is shorter than the length of the first groove wall 111 on the lower side along the front-to-back direction, so that the hinge 320 can quickly detach from the second groove wall 112 to separate from the mating groove 11.

[0107] In some embodiments, the hinge 320 is gradually separated from the mating member 10 by rotating the mating member 10, such as Figure 7-Figure 8 As shown, the mating piece 10 moves upward and backward and rotates, the hinge 320 on the front side of the mating piece 10 rotates upward and forward, and the second groove wall 112 is shorter than the first groove wall 111, so that the hinge 320 can be separated from the mating groove 11 more quickly, making manual opening and closing of the door more convenient.

[0108] In some embodiments of the present invention, Figure 5 and Figure 7-Figure 9 As shown, the door driving device 100 includes a limiting component 40, and the mating component 10 includes a limiting mating portion 13. When the opening angle of the door 300 is greater than the set door opening angle, the limiting component 40 and the limiting mating portion 13 abut against each other. When the opening angle of the door 300 is less than the predetermined door opening angle, the limiting component 40 and the limiting mating portion 13 separate.

[0109] By limiting the mating part 10 through the limiting component 40, the mating part 10 can remain separated from the hinge 320 after the door is manually opened until the hinge 320 moves freely, so that the hinge 320 can re-engage with the mating groove 11 during the subsequent manual door closing process, so that the door body drive device 100 can repeatedly realize manual door opening and closing operations.

[0110] In some embodiments where the fitting 10 includes a second sliding portion 122, such as Figure 2-Figure 9As shown, when the opening angle of the door body 300 is greater than the set door opening angle, the limiting component 40 and the limiting matching part 13 are offset, so that the second sliding part 122 can remain in the second track 332, that is, the matching part 10 can remain in a state of separation from the hinge 320, which is convenient for subsequent door closing operations.

[0111] In some embodiments, as Figure 2-Figure 9 As shown, when the opening angle of the door body 300 is less than or equal to the predetermined door opening angle, the limit fitting portion 13 extends obliquely along the first direction toward the side close to the limit component 40; when the opening angle of the door body 300 is greater than the set door opening angle, the limit fitting portion 13 extends along the horizontal direction.

[0112] Through the cooperation between the limiting component 40 and the limiting matching part 13, the movement of the matching component 10 can be guided by utilizing the extension direction of the limiting matching part 13, so that in the process of the opening angle of the door body 300 increasing from less than or equal to the predetermined door opening angle to greater than the set door opening angle, the matching component 10 can move more smoothly along the first direction and in the direction close to the limiting component 40, such as moving and rotating, so that the hinge 320 is separated from the matching component 10, and manual door opening is more convenient.

[0113] In some embodiments, as Figure 5 and Figure 7-Figure 9 As shown, the limiting component 40 includes a limiting elastic component 41 and a limiting component 42. The limiting component 42 is used to abut against the limiting matching portion 13, and the limiting elastic component 41 is used to apply an elastic force along the second direction to the limiting component 42. The limiting elastic component 41 can be a component such as a spring that can undergo elastic deformation. Correspondingly, the limiting elastic component 41 can be in a stretched state or a compressed state, so that the limiting elastic component 41 applies an elastic force along the second direction to the limiting component 42. For example, in some embodiments, Figure 2-Figure 9 As shown, the limiting fitting portion 13 is located at the lower side of the limiting portion 42 , and the limiting elastic member 41 is in a compressed state to apply a downward elastic force to the limiting member 42 .

[0114] During manual door opening, the mating member 10 moves in the first direction, and the mating member 10 abuts against the limiting member 42 to apply pressure in the first direction to the limiting member 42, while the limiting elastic member 41 applies an elastic force in the second direction to the limiting member 42. Manual door opening causes the pressure of the mating member 10 on the limiting member 42 to be greater than the elastic force of the limiting elastic member 41 on the limiting member 42, causing the limiting member 42 to move and rotate in the first direction, and the second sliding portion 122 slides into the second track 332, and then the hinge 320 separates from the mating groove 11 (the door body driving device 100 is composed of Figure 5 The status shown changes to Figure 7 ), the second sliding portion 122 is retained in the second track 332 .

[0115] During manual door closing, the hinge 320 re-engages with the engagement groove 11 to cause the engagement member 10 to move and rotate in the second direction, for example Figure 8 As shown, the fitting 10 moves forward and downward and rotates, so that the position-limiting fitting portion 13 moves upward and forward and rotates under the action of the position-limiting elastic member 41 and the position-limiting member 42. After the fitting 10 is returned to the normal position (the fitting 10 is Figure 8 The status shown changes to Figure 4 The mating member 10 then moves downward as a whole. Manually closing the door causes the pressure of the position-limiting mating portion 13 on the position-limiting member 42 to be greater than the elastic force of the position-limiting elastic member 41 on the position-limiting member 42, further compressing the position-limiting elastic member 41 and causing the position-limiting mating portion 13 and the position-limiting member 42 to move in the first direction. The mating member 10 then returns to its original position, and the second sliding portion 122 slides into the first track 331, causing the mating member 10 to move in the second direction.

[0116] The limiting elastic member 41 is used to provide the limiting member 42 with movement space along the first direction and the second direction, so that the limiting member 42 can adapt to the movement of the hinge 320 and the matching member 10 and move. The limiting member 42 is not easily damaged by forced manual door opening, and the door body 300 is conveniently opened to a door opening angle greater than the predetermined door opening angle for taking and placing tableware.

[0117] In some embodiments, as Figure 2-Figure 9 As shown, the door driving device 100 includes an installation box 30, which is provided with a first stop portion 341 and a second stop portion 342 spaced apart along a first direction. The limiting member 42 is movably disposed between the first stop portion 341 and the second stop portion 342. The limiting elastic member 41 is located on the side of the limiting member 42 facing away from the limiting mating portion 13 and abuts between the limiting member 42 and the first stop portion 341, placing the limiting elastic member 41 in a compressed state. When the mating member 10 is separated from the limiting member 40, the limiting member 42 abuts against the second stop portion 342, positioning the limiting member 42 between the limiting elastic member 41 and the second stop portion 342, thereby facilitating the limiting elastic member 41 to apply an elastic force along the second direction to the limiting member 42.

[0118] The limiting elastic member 41 and the limiting member 42 are limited by the first stop portion 341 and the second stop portion 342, so that when the door body 300 is opened to the predetermined door opening angle, the limiting member 42 is located at a position where it can abut against the matching member 10, thereby enabling the matching member 10 to limit the hinge 320, thereby improving the reliability of the limiting component 120 in limiting the hinge 320 when the door body 300 is opened to the predetermined door opening angle.

[0119] In some embodiments, as Figure 2-Figure 9As shown, the mounting box 30 includes a box body 31 and a cover 32. The box body 31 is provided with a first rib 312 extending in the vertical direction, and the cover 32 is provided with a second rib extending in the vertical direction. The cover 32 is mounted on the box body 31. A retaining member 42 has guide grooves 421 on its left and right sides. These guide grooves 421 are respectively movably engaged with the first and second ribs 312 and 312. The retaining member 42 is movably mounted to the first and second ribs via the guide grooves 421, making the installation of the retaining member 42 more stable and effectively retaining the mating member 10.

[0120] There are various ways to stop the door drive device 100 from automatically opening or closing the door. For example, in some embodiments, the drive member 21 is configured to operate for a predetermined time to open the door 300 to a predetermined opening angle or close at a predetermined opening angle. Specifically, after the dishwasher 1000 automatically washes dishes, the door 300 is in a closed state. The drive member 21 begins to operate to drive the rack 24 to move via the gear set 23, thereby driving the mating member 10 to move and rotate the hinge 320, causing the door 300 to gradually open. After the drive member 21 operates for a predetermined time, the door 300 opens to the predetermined opening angle. The drive member 21 then stops operating, and the door 300 remains at the predetermined opening angle.

[0121] When the door 300 is opened at a predetermined angle, the driver 21 starts to operate to drive the hinge 320 to rotate, gradually closing the door 300. After the driver 21 operates for a predetermined period of time, the door 300 is completely closed. The driver 21 stops operating, and the door 300 is in a closed state. By controlling the operating time of the driver 21 to stop the automatic door opening or closing operation, the feasibility is high.

[0122] In other embodiments, the door driving device 100 includes a first trigger member and a second trigger member arranged along a first direction, and the first trigger member and the second trigger member are respectively connected to the driving member 21 for communication. The first trigger member and the second trigger member can be micro switches or the like. When the driving member 21 drives the door body 300 to open to a predetermined door opening angle, the rack 24 or the matching member 10 triggers the second trigger member to stop the driving member 21; when the driving member 21 drives the door body 300 to close in place, the rack 24 or the matching member 10 triggers the first trigger member to stop the driving member 21. When the door body 300 is closed in place, the door body 300 is completely closed, isolating the outside world and the interior of the dishwasher 1000 at the door body 300.

[0123] The position of the rack 24 or the matching part 10 is confirmed by the first trigger member and the second trigger member to determine whether the door body 300 is opened to the predetermined door opening angle or is closed in place, and then determine whether to stop automatic door opening or stop automatic door closing. It is not easy to cause the problem of stopping automatic door closing when the opening angle of the door body 300 is not equal to the predetermined door opening angle, nor is it easy to cause the problem of stopping automatic door closing when the door body 300 is not completely closed. The control accuracy of automatic door opening and closing is high.

[0124] In some embodiments, the door drive device 100 includes a third triggering member communicatively connected to the driving member 21, and the third triggering member is disposed near the second track 332. When the door 300 is opened at an angle greater than a predetermined door opening angle, indicating that a manual door opening and closing operation is involved, the mating member 10 or the limiting member 42 triggers the third triggering member, causing the driving member 21 to stop driving, thereby making the automatic door opening and closing processes and the manual door opening and closing processes independent of each other. For example, the automatic door opening and closing operation can be switched to the manual door opening and closing operation during the automatic door opening and closing process, thereby reducing mutual interference between the automatic and manual door opening and closing operations and improving the operational stability of the automatic and manual door opening and closing operations.

[0125] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the door driving device 100 includes a door balancing assembly 50, which includes a door balancing elastic member 51. The door balancing elastic member 51 connects the machine body 200 and the door body 300. When the opening angle of the door body 300 is any angle greater than the predetermined door opening angle, the door balancing elastic member 51 is used to keep the door body 300 at the current opening angle.

[0126] When the door 300 is opened at any angle greater than the predetermined door opening angle, the door balancing elastic member 51 is in a stretched state, providing a pulling force on the door 300, thereby balancing the weight of the door 300 with the elastic force of the door balancing elastic member 51, so that the door 300 can maintain the current opening angle. This eliminates the need for power consumption, helps reduce energy consumption, and has a simple structure and low cost, which helps simplify the structure of the dishwasher 1000 and reduce production costs. Furthermore, when the door needs to be closed, only the weight of the door 300 needs to be overcome, which facilitates rapid door closing and convenient and quick operation.

[0127] In some embodiments, the door balancing assembly 50 further includes a guide wheel 53 and a pull rope 52 connected to the door balancing elastic member 51 . The pull rope 52 and the guide wheel 53 can realize the reversal of the door balancing assembly 50 , which helps to reduce the space occupied by the door balancing assembly 50 .

[0128] like Figure 1 and Figure 3As shown, the dishwasher 1000 according to the embodiment of the present invention is characterized by including a body 200, a door 300, and a door drive device 100 according to the embodiment of the present invention. Since the door drive device 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the dishwasher 1000 according to the embodiment of the present invention can automatically open the door 300 to dry the dishes after the dishwasher 1000 washes the dishes. The door drive device 100 can also be set at the hinge 320 to accurately control the rotation angle of the hinge 320, thereby controlling the speed of the automatic opening of the door 300 and improving the safety of the automatic door opening.

[0129] In some embodiments, as Figure 1 and Figure 3 As shown, the door body 300 includes a door body 310 and a hinge 320. The door body 310 is rotatably connected to the body 200 through the hinge 320, and the hinge 320 has a mating protrusion 3201. The mating protrusion 3201 can be plugged into the mating groove 11 of the mating part 10. The structure is simple and easy to implement.

[0130] In some embodiments, as Figure 1-Figure 4 As shown, the movement path of the mating part 10 is at least partially located within the rotation radius of the mating protrusion 3201, so that the mating part 10 and the mating protrusion 3201 can move together for a certain path, so that the hinge 320 and the mating part 10 can move together during the mating process of the mating protrusion 3201 and the mating groove 11, for example, the hinge 320 drives the mating part 10 to move or the mating part 10 drives the hinge 320 to move, so that the restriction on the opening angle of the door body 300 is more stable.

[0131] In some embodiments, as Figure 1-Figure 4 As shown, the front end of the hinge 320 is connected to the door body 310, the middle part of the hinge 320 is hinged to the body 200, and the rear end of the hinge 320 includes a hook and a mating protrusion 3201, and the hook is connected to the door balance assembly 50. Compared with the hinge in the related art, the hinge 320 of the present application is additionally provided with a mating protrusion 3201, so that the mating protrusion 3201 can be mated with the mating groove 11 to limit the opening angle of the door body 310.

[0132] The door drive device 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.

[0133] like Figures 1-11As shown, a dishwasher 1000 according to a specific embodiment of the present invention includes a body 200, a door body 300 and a door body driving device 100, the door body 300 includes a door body 310 and a hinge 320, the door body 310 is rotatably connected to the body 200 through the hinge 320, the rotation axis of the hinge 320 is parallel to the left and right directions, and the rear end of the hinge 320 has a matching protrusion 3201.

[0134] The door drive device 100 includes a mating member 10, a drive assembly 20, a mounting box 30, a limiting component 40, and a door balancing assembly 50. The mounting box 30 is mounted on the door body 200 and includes a box body 31 and a cover 32. The box body 31 is provided with a first groove 311, and the cover 32 is provided with a second groove. The cover 32 is mounted on the box body 31 so that the first groove 311 and the second groove are opposite each other in the left-right direction. The first groove 311 constitutes a portion of a first track 331 and a second track 332, and the second groove constitutes another portion of the first track 331 and the second track 332. The first track 331 extends in the vertical direction, and the second track 332 extends in the front-to-back direction and is connected to the first track 331. The second track 332 is located on the upper and rear side of the first track 331.

[0135] The mating component 10 has a first sliding portion 121 and a second sliding portion 122. The first sliding portion 121 is slidable along the first track 331, and the second sliding portion 122 is slidable along the first track 331 and the second track 332. The first sliding portion 121 and the second sliding portion 122 each include a protrusion 123 located on the left and right sides of the mating component 10. The protrusions 123 are movably inserted into the first groove 311 and the second groove, respectively, so that the mating component 10 is mounted on the first track 331 and the second track 332 in a vertically movable manner.

[0136] Among them, the first sliding part 121 is movable in the up and down directions, the second sliding part 122 is rotatable relative to the first sliding part 121, and the rotation axis of the second sliding part 122 extends in the left and right directions. The position of the rotation axis is the center line of the first sliding part 121 and is movable in the up and down directions with the first sliding part 121, so that the mating part 10 can move, and can also move and rotate at the same time.

[0137] The mating member 10 has a mating groove 11 for accommodating the mating protrusion 3201. The sidewalls of the mating groove 11 include a first groove wall 111 and a second groove wall 112 that are opposed to each other in the vertical direction. The second groove wall 112 is located above the first groove wall 111 and is shorter than the first groove wall 111 in the front-to-back direction.

[0138] The fitting member 10 includes a limiting fitting portion 13 , and the limiting component 40 includes a limiting elastic member 41 and a limiting member 42 . The limiting member 42 is used to abut against the limiting fitting portion 13 , and the limiting elastic member 41 is used to apply a downward elastic force to the limiting member 42 .

[0139] The drive assembly 20 is connected to the mating member 10 and is used to drive the mating member 10. The drive assembly 20 includes a drive member 21, a transmission component 22, a gear set 23, and a rack 24. The drive member 21 is a motor, and the rack 24 is reciprocating in the vertical direction and is hingedly connected to the mating member 10. The gear set 23 includes five gears 231: a worm that engages with the motor, a worm wheel that engages with the worm, a first gear 223, a second gear 224, and an intermediate gear 232.

[0140] The transmission component 22 includes a connecting portion 221 and a connecting and fitting portion 222. The connecting portion 221 is fixedly connected to the inner circumferential surface of the first gear 223. The connecting and fitting portion 222 is fixedly connected to the axial rear end of the second gear 224 and is located within the first gear 223. The connecting portion 221 and the connecting and fitting portion 222 are in contact and mating relationship and are coaxially arranged. The rotational axis of the connecting portion 221 and the connecting and fitting portion 222 is parallel to the left-right direction.

[0141] The connecting portion 221 has a first protrusion 2211 and a second protrusion 2212 alternately arranged around the rotation axis. In the circumferential direction of the connecting portion 221, the inward protrusion height of the first protrusion 2211 gradually decreases to form a downhill section, and the protrusion height of the second protrusion 2212 gradually increases to form an uphill section. The outer peripheral surface of the first gear 223 is provided with a tooth portion.

[0142] The connecting portion 222 includes a plurality of protrusions 2221 arranged around the rotation axis. Some of the protrusions 2221 abut against the first protrusion 2211 , and another portion of the protrusions 2221 abut against the second protrusion 2212 . The protrusions 2221 are made of elastic material.

[0143] When the relative torsional force between the connecting portion 221 and the connecting mating portion 222 is less than or equal to the critical value, the connecting portion 221 and the connecting mating portion 222 rotate synchronously, so that the transmission connection between the two adjacent gears 231 is in a connected state, and the driving member 21 can drive the mating member 10 to move through the gear set 23 and the rack 24.

[0144] In the process of the driving member 21 driving the matching member 10 to move through the gear set 23 and the rack 24, the motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the intermediate gear 232 to rotate, the intermediate gear 232 drives the first gear 223 to rotate, the first gear 223 drives the second gear 224 to rotate through the connecting part 221 and the connecting matching part 222, the second gear 224 drives the rack 24 to move in the up and down directions in the first track 331, the rack 24 drives the matching member 10 to move, and the matching member 10 drives the hinge 320 to rotate to automatically open the door body 300 or automatically close the door body 300.

[0145] The drive assembly 20 can drive the mating member 10 upward to drive the hinge 320 to rotate counterclockwise about the rotation axis, causing the door body 300 to open to a predetermined opening angle, thereby achieving automatic door opening. The drive assembly 20 can also drive the mating member 10 downward to drive the hinge 320 to rotate clockwise about the rotation axis, causing the door body 300 to close, thereby achieving automatic door closing.

[0146] When the relative torsional force between the connecting portion 221 and the connecting fitting portion 222 is greater than a critical value, the connecting portion 221 and the connecting fitting portion 222 rotate relative to each other, and each protrusion 2221 contacts the first protrusion 2211 and the second protrusion 2212 in turn, so that the transmission connection between the two adjacent gears 231 is disconnected, and the driving member 21 cannot drive the fitting member 10 to move.

[0147] The door balancing assembly 50 includes a guide wheel 53, a connected door balancing elastic member 51, and a pull rope 52. The door balancing elastic member 51 and the pull rope 52 connect the door body 200 and the hinge 320, and the pull rope 52 is wound around the guide wheel 53. When the door body 310 is opened at any angle greater than the predetermined door opening angle, the door balancing elastic member 51 is used to maintain the current opening angle of the door body 310.

[0148] During the door opening process, first, when the opening angle of the door body 310 is less than the predetermined door opening angle, the limiting component 40 and the limiting matching part 13 are in a separated state, the second sliding part 122 is located on the first track 331, and the projections of the first groove wall 111, the second groove wall 112 and the matching protrusion 3201 along the up and down directions overlap.

[0149] Then, when the opening angle of the door body 310 is equal to the predetermined door opening angle, the limiting component 40 is against the limiting matching part 13, the second sliding part 122 is located on the first track 331, and the projection parts of the first groove wall 111, the second groove wall 112 and the matching protrusion 3201 along the up and down directions overlap.

[0150] Then, when the door body 310 is opened at an angle greater than the predetermined door opening angle and less than or equal to the set door opening angle, the position-limiting member 40 abuts against the position-limiting mating portion 13, the position-limiting member 42 moves upward, the second sliding portion 122 is located on the first track 331 or the second track 332, and the vertical projections of the first groove wall 111, the second groove wall 112, and the mating protrusion 3201 overlap. The set door opening angle is greater than the predetermined door opening angle.

[0151] Finally, when the opening angle of the door body 310 is greater than the set door opening angle, the limiting component 40 is abutted against the limiting matching part 13, the limiting component 42 moves upward, the second sliding part 122 is located on the second track 332, and the second groove wall 112 and the matching protrusion 3201 are staggered in their projections along the up and down directions.

[0152] During the automatic door opening and closing process, the opening angle of the door body 310 is less than or equal to the predetermined door opening angle. Figure 4 As shown, during the automatic door opening process, the mating protrusion 3201 contacts the first groove wall 111, causing the driving assembly 20 to drive the mating member 10 to move upward to drive the hinge 320 to rotate counterclockwise around the rotation axis. Figure 6 As shown, during the automatic door closing process, the mating protrusion 3201 contacts the second slot wall 112, causing the driving assembly 20 to drive the mating member 10 to move downward to drive the hinge 320 to rotate clockwise around the rotation axis.

[0153] During manual door opening, if Figure 5 As shown, when the opening angle of the door body 310 is less than or equal to the set door opening angle, the mating protrusion 3201 contacts the second groove wall 112; Figure 7 As shown, when the opening angle of the door body 310 is greater than the set door opening angle, the mating protrusion 3201 is separated from the mating groove 11, and the hinge 320 can move freely. Figure 8 As shown, when the opening angle of the door body 310 is greater than the set door opening angle, the mating protrusion 3201 is separated from the mating groove 11; when the opening angle of the door body 310 is less than or equal to the set door opening angle, the mating protrusion 3201 contacts the first groove wall 111.

[0154] The door driving device 100 of this embodiment can automatically open the door to a predetermined door opening angle and automatically close the door 300 after automatically opening the door. Furthermore, the door can be manually opened and closed in any state of the door 300. Furthermore, the door driving device 100 is provided with a connecting portion 221 and a connecting mating portion 222 to protect the human body from being pinched during the automatic door closing process.

[0155] Other structures and operations of the door driving device 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.

[0156] 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.

[0157] 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.

[0158] 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 drive device for a dishwasher, characterized in that: include: a mating piece, the mating piece being movable relative to the body of the dishwasher, the mating piece having a mating groove for accommodating a hinge of a door of the dishwasher; A drive assembly connected to the mating component, wherein: The driving assembly is suitable for driving the matching part to move along a first direction to drive the hinge to rotate around the rotation axis along a first rotation direction to open the door body to a predetermined door opening angle. The first direction intersects with the rotation axis of the hinge.

2. The door driving device of the dishwasher according to claim 1, characterized in that: The driving assembly is also suitable for driving the matching part to move in a second direction to drive the hinge to rotate around the rotation axis in a second rotation direction to close the door body. The first direction is opposite to the second direction, and the first rotation direction is opposite to the second rotation direction.

3. The door driving device of a dishwasher according to claim 1 or 2, characterized in that: The driving assembly includes a driving member, a gear set and a rack, wherein the gear set includes at least one gear, and the gear set is meshed and connected between the driving member and the rack. The rack is movable along the first direction and the second direction. The rack is connected to the matching member. The driving member is used to drive the gear set to rotate and thereby drive the rack to move. The first direction is opposite to the second direction.

4. The door driving device of the dishwasher according to claim 3, characterized in that: The gear set includes a plurality of gears, the drive assembly includes a transmission component, at least two of the gears are connected in transmission via the transmission component, the transmission component includes a connecting portion and a connecting matching portion respectively fixedly connected to the two gears, the connecting portion and the connecting matching portion are in contact and matched, and the rotation axes of the connecting portion and the connecting matching portion are parallel. When the relative torsional force between the connecting portion and the connecting fitting portion is less than or equal to a critical value, the connecting portion and the connecting fitting portion rotate synchronously, so that the transmission connection between the two adjacent gears is in a connected state; When the relative torsional force between the connecting portion and the connecting fitting portion is greater than the critical value, the connecting portion and the connecting fitting portion rotate relative to each other, so that the transmission connection between the two adjacent gears is disconnected.

5. The door driving device of the dishwasher according to claim 4, characterized in that: The connecting portion has a first protrusion and a second protrusion alternately arranged around the rotation axis, wherein the protrusion height of the first protrusion gradually decreases and the protrusion height of the second protrusion gradually increases in the circumferential direction of the connecting portion, and the connecting mating portion includes a plurality of protrusions arranged around the rotation axis, wherein some of the protrusions abut against the first protrusions and other parts of the protrusions abut against the second protrusions; When the relative torsional force is greater than the critical value, each of the protrusions contacts the first protrusion and the second protrusion in sequence.

6. The door driving device of a dishwasher according to claim 4, characterized in that: The multiple gears include a first gear and a second gear, the inner circumference of the first gear is provided with the connecting portion and the outer circumference is provided with a tooth portion, the outer circumference of the second gear is provided with a tooth portion, and the connecting fitting portion is provided at one axial end of the second gear and is located inside the first gear.

7. The door driving device of a dishwasher according to claim 1, characterized in that: When the opening angle of the door body is greater than the set door opening angle, the hinge is separated from the matching groove, and the set door opening angle is greater than or equal to the predetermined door opening angle.

8. The door driving device of a dishwasher according to claim 7, characterized in that: It also includes a first track and a second track that are connected, the extension direction of the first track is parallel to the first direction, the extension direction of the second track intersects with the first direction, the second track is located on one side of the first track along the first direction and on the side of the first track facing away from the hinge, the matching component has a first sliding portion and a second sliding portion, the first sliding portion is slidable along the first track, and the second sliding portion is slidable along the first track and the second track, wherein, When the opening angle of the door body is less than or equal to the predetermined door opening angle, the second sliding portion is located on the first track; when the opening angle of the door body is greater than the set door opening angle, the second sliding portion is located on the second track.

9. The door driving device of a dishwasher according to claim 8, characterized in that: It includes an installation box, which includes a box body and a cover body, the box body is provided with a first groove, the cover body is provided with a second groove, and the cover body is covered on the box body so that the first groove and the second groove cooperate to form the first track and the second track, and the first sliding part and the second sliding part both include convex parts respectively located on both sides of the mating part, and the convex parts on both sides are movably inserted into the first groove and the second groove respectively.

10. The door driving device of a dishwasher according to claim 1, characterized in that: The groove sidewall of the matching groove includes a first groove wall and a second groove wall opposite to each other, wherein the second groove wall is located on one side of the first groove wall along the first direction. When the door body is opened at an angle less than or equal to a predetermined door opening angle, the projections of the first groove wall, the second groove wall, and the hinge along the first direction partially overlap; When the opening angle of the door body is greater than the set door opening angle, the projections of the second groove wall and the hinge along the first direction are staggered, and the set door opening angle is greater than or equal to the predetermined door opening angle.

11. The door driving device of a dishwasher according to claim 1, characterized in that: The door driving device includes a limiting component, and the matching component includes a limiting matching part. When the opening angle of the door body is greater than the set door opening angle, the limiting component and the limiting matching part are offset against each other, and the set door opening angle is greater than or equal to the predetermined door opening angle; when the opening angle of the door body is less than the predetermined door opening angle, the limiting component is separated from the limiting matching part.

12. The door driving device of a dishwasher according to claim 11, characterized in that: When the opening angle of the door body is less than or equal to the predetermined door opening angle, the limit fitting portion extends obliquely along the first direction toward the side close to the limit component; when the opening angle of the door body is greater than the set door opening angle, the limit fitting portion extends in the horizontal direction.

13. The door driving device of a dishwasher according to claim 11, characterized in that: The limiting component includes a limiting elastic component and a limiting component. The limiting component is used to abut against the limiting matching portion. The limiting elastic component is used to apply elastic force along a second direction to the limiting component. The first direction is opposite to the second direction.

14. The door driving device of a dishwasher according to claim 3, characterized in that: The driving member is configured to operate for a predetermined time to open the door to the predetermined door opening angle or close the door from the predetermined door opening angle; or The door driving device includes a first triggering member and a second triggering member arranged along the first direction, the first triggering member and the second triggering member are respectively connected to the driving member for communication, and when the driving member drives the door to open to a predetermined door opening angle, the rack or the matching member triggers the second triggering member to stop the driving member; When the driving member drives the door body to close in place, the rack or the matching member triggers the first triggering member to stop the driving member.

15. A dishwasher, characterized in that: A dishwasher comprising a machine body, a door body and a door driving device according to any one of claims 1 to 14, wherein the door body comprises a door body and a hinge, the door body is rotatably connected to the machine body via the hinge, and the hinge has a mating protrusion, and the mating protrusion is suitable for being plugged into and mated with the mating groove of the mating part.

16. The dishwasher according to claim 15, characterized in that The movement path of the engaging member is at least partially located within the rotation radius of the engaging protrusion.

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