Door opening and closing device and household appliance

Abstract

The invention belongs to the technical field of electric appliances, and discloses a door opening and closing device and a household appliance, and the door opening and closing device comprises a mounting base, a door lock piece, a door lock actuating mechanism and a stop piece. The door lock part can move relative to the mounting base so as to be located at a first position for limiting opening of the door body, a second position for allowing opening of the door body and keeping the door body at a set angle and a third position for releasing limiting of the door body; the power output end of the door lock actuating mechanism is provided with a transmission assembly so that the door lock piece can move from the first position to the second position, or the door lock piece can move from the first position to cross the second position to the third position. The stop piece is provided with a stop position and a non-stop position, and when the stop piece moves to the stop position, the stop piece is located on the moving path of the transmission assembly or the door lock piece so as to limit the door lock piece in the second position to continue to move towards the third position. The door lock part can stably and reliably stay at the second position, the use reliability of the door opening and closing device is improved, and the use experience of the household appliance is improved.

Description

Technical Field

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

[0002] Household appliances such as dishwashers and steam ovens usually include a body with an inner container and a door body movably mounted on the body, so that objects in the inner container can be taken out and put in through the selective opening and closing of the door body. In order to ensure that the household appliance will not be opened at will when in use, a door lock device is usually provided on the body, and a door lock matching piece is provided on the door body. When the door body is closed, the door lock matching piece cooperates with the door lock device to lock the door body.

[0003] Steam cooking equipment such as steam ovens or household appliances such as dishwashers may require exhaust during use. To meet the exhaust requirements of household appliances during use, in the prior art, a door lock device includes a drive motor and a push rod. The push rod extends in the front-to-back direction and has a lock hook with a lock groove at the front end. A lock tongue is provided on the door body. When the door body is closed, the push rod is in an initial position, and the lock tongue is locked with the lock hook. When the drive motor is running, the push rod extends forward and, through the cooperation of the lock hook and the lock tongue, pushes the door body open to a certain angle, thereby achieving exhaust. After the exhaust is completed, the drive motor drives the push rod to retract, thereby driving the door body to close again.

[0004] The door lock device provided by the prior art can achieve the locking of the door body relative to the body when closed and the opening of the door body at a certain angle for exhaust through the cooperation of the push rod and the lock tongue. However, the setting of this door lock device cannot meet the automatic door opening operation of the door body. The user is required to apply a forward force to the door body to cause the lock hook and the lock tongue to disengage, which makes the door opening operation more difficult. At the same time, due to this setting, the door body can be opened manually with external force when locked, so there is a possibility of accidental door opening operation during the use of household appliances, which affects the normal use of household appliances. In addition, the outflow of hot air in the household appliance at the moment of opening the door will also cause the risk of scalding to the user, thereby reducing the safety of the use of household appliances. Summary of the invention

[0005] The object of the present invention is to provide a door opening and closing device and a household appliance, so that the door body can be opened to a preset angle relative to the body to exhaust air, while realizing automatic door opening operation of the household appliance and improving the reliability and stability of the household appliance when the door body is closed.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A door opening and closing device, used to cooperate with a lock matching piece on a door body, the door opening and closing device comprises:

[0008] Install the base;

[0009] A door lock, the door lock is arranged to be movable relative to the mounting base so as to be in a first position restricting the door from opening, a second position allowing the door to open and remain at a set angle, and a third position releasing the door from being restricted;

[0010] A door lock actuating mechanism, wherein the power output end of the door lock actuating mechanism has a transmission assembly, and the transmission assembly acts on the door lock member to move the door lock member from the first position to the second position, or to move the door lock member from the first position past the second position to the third position;

[0011] A stop member can be movably constrained on the mounting base and has a stop position and a non-blocking position. When the stop member moves to the stop position, the stop member is located on the moving path of the transmission assembly or the door lock member to limit the door lock member in the second position from continuing to move toward the third position.

[0012] As an optional technical solution of the door opening and closing device, the transmission assembly includes a cam, the cam is connected to the power output end and driven by the power output end to rotate around the first axis to drive the door lock member to move, and when the stop member is in the stop position, the stop member is on the moving path of the cam;

[0013] Alternatively, the transmission assembly includes a cam and a transmission rod unit, the first end of the transmission rod unit is hinged or abutted with the door lock, the second end of the transmission rod unit abuts with the cam, the cam is connected to the power output end, and the power output end drives the cam to rotate around a first axis so that the rotation of the cam pushes the transmission rod unit to move and forces the door lock to move from the first position to the second position or to the third position, and when the stop member is in the stop position, the stop member is located on the moving path of the cam or the transmission rod unit.

[0014] As an optional technical solution of the door opening and closing device, the power output end drives the stopper to rotate along the first rotation direction, and the stopper has a stop portion. When the stopper is in the stop position, the stop portion is located at the front side of the cam along the first rotation direction to abut against the side wall of the cam and limit the cam from continuing to rotate;

[0015] And / or, the door opening and closing device also includes a stop driving member, which has a transmission shaft that can rotate around its own axis, and the stop member is installed on the transmission shaft so that the rotation of the transmission shaft drives the stop member to rotate from the non-blocking position to the stop position.

[0016] As an optional technical solution for the door opening and closing device, the cam has a first end close to the power output end and a second end arranged opposite to the first end, and when the stop member is in the stop position, the stop member abuts against the side wall of the first end of the cam.

[0017] As an optional technical solution of the door opening and closing device, the mounting base has a driving cavity, and the cam is spaced apart from the bottom of the driving cavity;

[0018] The door lock actuating mechanism includes a door lock driving member having the power output end, wherein the door lock driving member is installed on the upper side of the cam and the first axis is vertically arranged, and when the stop member is in the non-blocking position, the stop member is located between the cam and the bottom of the driving cavity.

[0019] As an optional technical solution for a door opening and closing device, the driving cavity includes a first cavity portion and a second cavity portion that are connected, the bottom of the first cavity portion is lower than the bottom of the second cavity portion, the stop member is installed in the first cavity portion, and the second end of the transmission rod unit is slidably installed in the second cavity portion.

[0020] As an optional technical solution of the door opening and closing device, the stopper also includes a connecting plate portion, the connecting plate portion is parallel to the axis of the transmission shaft, and the stopper portion is connected to the upper end of the connecting plate portion and is perpendicular to the axis of the transmission shaft;

[0021] And / or, the door opening and closing device further comprises a stop and reset member, wherein the stop and reset member acts on the stop member to keep or restore the stop member to the non-blocking position.

[0022] As an optional technical solution of the door opening and closing device, the door lock member includes a lock hook, the lock hook extends from the back to the front and the rear end is rotatably mounted on the mounting base, the lock hook has a lock slot with an opening on one side, and a partition is convexly provided on the slot wall of the lock slot facing the opening, and the partition extends toward the opening to divide the lock slot into a front lock slot located in front of the partition and a rear lock slot located in the rear of the partition;

[0023] When the door lock is in the first position, the door lock limits the lock fitting when the door is closed to the rear lock groove;

[0024] When the door lock is in the second position, the door lock allows the lock fitting to move from the rear lock slot to the front lock slot and be limited in the front lock slot, so that the door body opens to a preset angle;

[0025] When the door lock member is in the third position, the door lock member allows the lock mating member to move forward and exit the lock slot, so that the door body is opened.

[0026] As an optional technical solution for a door opening and closing device, the mounting base includes a lock seat and a drive seat which are separately arranged, the door lock member is movably mounted on the lock seat, and the door lock actuating mechanism and the stop member are mounted on the drive seat.

[0027] A household appliance comprises a body and a door body movably mounted on the front side of the body, the door body is provided with a lock fitting, and further comprises the door opening and closing device as described above, the mounting base being mounted on the body;

[0028] When the door lock is in the first position, the door lock and the lock matching member are in a first locking state to restrict the door body from opening relative to the machine body;

[0029] When the door lock is in the second position, the door lock and the lock matching member are in a second locked state so that the door body can be opened to a set angle relative to the machine body;

[0030] When the door lock is in the third position, the lock fitting can be moved forward out of the door lock to allow the door to open relative to the machine body.

[0031] Beneficial effects of the present invention:

[0032] The door opening and closing device provided by the present invention has a door lock component that can move in a first position, a second position, and a third position, so that when the door lock component is in the first position, the door lock component can be stably matched with the lock matching component to avoid the normal operation of the household appliance being affected by the artificial opening of the door body or the risk of scalding the user due to the escape of hot air after the door is opened, thereby improving the reliability of the door body locking; when the door lock component is in the second position, the door body can be opened at a certain angle relative to the machine body to realize the exhaust operation, and when the door lock component moves to the third position, the door lock component and the lock matching component are unlocked to allow the door body to open, thereby facilitating the automatic door opening and closing setting of the door body, reducing the difficulty of opening the door body, and improving the user experience of the door opening and closing device; at the same time, by setting a stopper, the stopper can stop the operation of the transmission component or the door lock component, and limit the door lock component to the second position. Compared with the method of controlling the operation of the door lock actuating mechanism by detecting the position or operating state of the transmission component or the door lock component to achieve the door lock component staying in the second position, this stopping method does not rely on the detection accuracy, the stopping is more reliable, and the control cost of the door opening and closing device is lower.

[0033] The household appliance provided by the present invention can improve the reliability and user experience of the household appliance by adopting the above-mentioned door opening and closing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a cross-sectional view of a household appliance provided by an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 A partial enlarged view of point I in the middle;

[0036] Figure 3 It is a schematic diagram of the structure of the mounting bracket, the air cover and the door opening and closing device provided in the embodiment of the invention;

[0037] Figure 4 is a schematic diagram of the structure of the door opening and closing device and the lock matching parts in different states provided by an embodiment of the present invention;

[0038] Figure 5 is a partial structural cross-sectional view of a door opening and closing device provided by an embodiment of the present invention;

[0039] Figure 6 is a structural schematic diagram of a stopper assembly and an air guide structure provided by an embodiment of the present invention;

[0040] Figure 7 is a cross-sectional view of the household appliance provided by an embodiment of the present invention at another viewing angle;

[0041] Figure 8 yes Figure 7 A partial enlarged view of the J in the middle;

[0042] Fig. 9 It is a partial structural schematic diagram of the wind shield provided by an embodiment of the present invention.

[0043] In the figure:

[0044] 100, door opening and closing device; 200, lock fitting; 300, liner; 400, chassis; 401, housing; 402, front frame; 403, top support plate; 500, door body; 600, control device; 601, control assembly; 602, front panel; 603, mounting bracket; 6031, front panel; 6032, side panel; 700, hood; 701, hood body; 702, extended hood; 703, exhaust port; 704, exhaust air duct; 7041, heat dissipation air duct; 7042, condensation air duct; 705, air inlet; 800, heat dissipation fan; 900, main control board;

[0045] 1. Door lock actuating mechanism; 11. Door lock driving member; 111. Output shaft; 12. Transmission assembly; 121. Cam; 122. Transmission rod unit; 1221. Sliding seat; 1222. Connecting rod;

[0046] 2. Stopper assembly; 21. Stopper driving member; 211. Stopper driving motor; 212. Transmission shaft; 22. Stopper reset member; 23. Stopper; 231. Connecting plate portion; 232. Stopper portion; 233. Fixed mounting portion;

[0047] 3. Door lock; 31. Lock hook; 311. Front lock slot; 312. Rear lock slot; 313. Partition; 32. Lock shaft; 33. Driven part;

[0048] 4. driving seat; 41. upper cover; 411. cover opening; 42. base; 421. heat dissipation vent; 43. driving cavity; 431. first cavity; 432. second cavity; 44. mounting ear;

[0049] 5. Lock seat; 6. Wind guide structure; 61. First wind guide plate; 611. Connecting part; 62. Second wind guide plate;

[0050] 7. Position detection component; 8. Door lock reset component. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0055] The present embodiment provides a household appliance, which can realize automatic door opening and closing operations, meet the requirement that the door body is opened at a set angle to exhaust and dissipate heat when the household appliance is in use, and improve the reliability of the household appliance.

[0056] Specifically, Figures 1 to 4 As shown, the household appliance comprises a body and a door body 500 movably mounted on the front side of the body, the body having an inner cavity with an open front side, and the door body 500 can rotate relative to the body to open or close the opening of the inner cavity. A lock fitting 200 is arranged at the top of the door body 500, and a door opening and closing device 100 is mounted on the body. The door opening and closing device 100 has an unlocking state and a locking state. When the door opening and closing device 100 is in the locking state, the door opening and closing device 100 cooperates with the lock fitting 200 to realize locking of the door body 500 relative to the body; when the door opening and closing device 100 is in the unlocking state, the door body 500 can be flipped open relative to the body.

[0057] In this embodiment, the door opening and closing device 100 includes a mounting base, a door lock 3, a door lock actuating mechanism 1 and a stopper 23. The door lock 3 is arranged to be movable relative to the mounting base so as to be in a first position for restricting the door body 500 from opening, a second position for allowing the door body 500 to open and maintain a set angle, and a third position for releasing the limit on the door body 500; the power output end of the door lock actuating mechanism 1 has a transmission assembly 12, and the transmission assembly 12 acts on the door lock 3 so as to make the door lock 3 move from the first position to the second position, or make the door lock 3 move from the first position to the third position beyond the second position; the stopper 23 can be movably constrained on the mounting base and has a stopper position and a non-blocking position. When the stopper 23 moves to the stopper position, the stopper 23 is located on the moving path of the transmission assembly 12 or the door lock 3 to restrict the door lock 3 in the second position from continuing to move to the third position.

[0058] The mounting base is installed on the machine body. When the door lock 3 is in the first position, the door lock 3 and the lock fitting 200 are in the first locking state to limit the door body 500 from opening relative to the machine body; when the door lock 3 is in the second position, the door lock 3 and the lock fitting 200 are in the second locking state to enable the door body 500 to open to a set angle relative to the machine body; when the door lock 3 is in the third position, the lock fitting 200 can move forward out of the door lock 3 to enable the door body 500.

[0059] That is, the door opening and closing device 100 and the household appliance provided in this embodiment, since the door lock component 3 can move in the first position, the second position and the third position, when the door lock component 3 is in the first position, the door lock component 3 can be firmly matched with the lock matching component 200, so as to avoid the normal operation of the household appliance being affected by the door body 500 being opened manually or the risk of scalding the user due to the escape of hot air after the door is opened, thereby improving the reliability of the locking of the door body 500; when the door lock component 3 is in the second position, the door body 500 can be opened at a certain angle relative to the body to realize the exhaust operation, and when the door lock component 3 moves to the third position, the door lock component 3 and the lock matching component 200 are unlocked, This allows the door body 500 to be fully opened, thereby facilitating the automatic door opening setting of the door body 500, reducing the difficulty of opening the door body 500, and improving the user experience of the door opening and closing device 100; at the same time, by setting the stop member 23, the stop member 23 can stop the operation of the transmission component 12 or the door lock 3, and limit the door lock 3 to the second position. Compared with the method of controlling the operation of the door lock actuator mechanism 1 by detecting the position or operating status of the transmission component 12 or the door lock 3 to achieve the door lock 3 staying in the second position, this stopping method does not rely on detection accuracy, the stopping is more reliable, and the control cost of the door opening and closing device 100 is lower.

[0060] In this embodiment, the household appliance is a cooking device, and the body includes an inner tank 300 with an open front side and a chassis 400 arranged outside the inner tank 300, and the chassis 400 includes a front frame 402 arranged around the front side of the inner tank 300, a top support plate 403 installed above the inner tank 300 and connected to the front frame 402 at the front end, and a housing 401 arranged outside the front frame 402 and the top support plate 403. A condensation heat dissipation component is arranged above the top support plate 403, which is used to condense and dissipate the steam discharged from the inner tank 300. The condensation heat dissipation component includes a hood 700 and a heat dissipation fan 800, and the hood 700 has an exhaust air duct 704 connected to the inner cavity of the inner tank 300, and the heat dissipation fan 800 is used to guide the airflow into the exhaust air duct 704 to dissipate the steam. Further, the front end of the hood 700 has an exhaust port connected to the exhaust air duct 704.

[0061] During the cooking process of the cooking device or when cooking is about to end, the door lock actuating mechanism 1 can be controlled. When the door lock component 3 is in the second position, the lock fitting 200 will not be completely disengaged from the door lock, and the door body 500 can be opened to a preset angle relative to the machine body, so that the hot steam inside the liner 300 can be released through the opening between the door body 500 and the machine body, thereby avoiding the problem of hot steam blowing in the face and causing scalding to the user when the door body 500 is opened.

[0062] In other embodiments, the household appliance may also be a dishwasher, a disinfection cabinet, or other appliances that require the body to be opened at a certain angle for exhaust. This embodiment takes the household appliance as a cooking device as an example to introduce the specific structure of the door opening and closing device 100. The application of the door opening and closing device 100 on other types of household appliances can refer to its application in cooking devices. Among them, the cooking device can be but is not limited to a steamer, a steam oven, and other devices with steam cooking functions. The structure of the door body 500, the lock fitting 200, and the body of the cooking device can be set with reference to the prior art. This is not the focus of the present invention and will not be repeated here.

[0063] In order to improve the convenience of matching between the door lock 3 and the lock matching component 200, in the present embodiment, the door lock 3 includes a lock hook 31, which extends from the back to the front and the rear end is rotatably mounted on the mounting base. The lock hook 31 has a lock groove with an opening on one side, and a partition 313 is convexly provided on the groove wall opposite to the opening. The partition 313 extends toward the opening to divide the lock groove into a front lock groove 311 located on the front side of the partition 313 and a rear lock groove 312 located on the rear side of the partition 313.

[0064] When the door lock 3 is in the first position, Figure 4 As shown in (a), the door lock 3 limits the lock fitting 200 of the door body 500 to the rear lock groove 312 when the door body 500 is closed, so that the door body 500 remains in a stable closed state relative to the machine body; when the door lock 3 is in the second position, as shown in Figure 4 As shown in (b), the door lock member 3 allows the lock fitting 200 to move from the rear lock slot 312 to the front lock slot 311 and be limited in the front lock slot 311, so that the door body 500 is opened to a preset angle; when the door lock member 3 is in the third position, as shown in Figure 4 As shown in (c), the door lock 3 allows the lock fitting 200 to move forward and exit the lock slot, so that the door body 500 is opened. Thus, by setting the front lock slot 311 and the rear lock slot 312 on the lock hook 31, the door lock 3 and the lock fitting 200 are switched between the first locked state, the second locked state and the unlocked state.

[0065] Specifically, when the door lock 3 is in the first position, the lock hook 31 extends straight from the back to the front, the notch of the lock groove faces the left or right side, and the lock fitting 200 located in the rear lock groove 312 abuts against the rear side of the partition 313, so that the partition 313 restricts the lock fitting 200 from moving forward; when the door lock 3 is in the second position, the lock hook 31 deflects a first angle relative to the front-to-back direction, so that the opening of the lock groove is tilted toward the front, and the partition 313 exits the lock fitting 200 and moves forward The lock fitting 200 can move from the rear lock groove 312 to the front lock groove 311 and abut against the front side groove wall of the front lock groove 311, that is, the door body 500 can be turned over as a whole relative to the body to open the set angle and stably maintain this state to meet the exhaust demand; when the exhaust is completed, the door lock 3 rotates from the second position to the first position, so that the lock hook 31 drives the lock fitting 200 to move backward from the front lock groove 311 to the rear lock groove 312, so that the door body 500 returns to the closed state. When the door body 500 needs to be opened, the lock hook 31 deflects the second angle relative to the front-to-back direction, and the second angle is greater than the first angle, so that the front end of the lock hook 31 and the partition 313 both exit the path of the lock fitting 200 moving forward, and then, the lock fitting 200 in the rear lock groove 312 can exit the lock groove forward.

[0066] It is worth mentioning that when the door lock 3 is in the second position for exhaust, after the exhaust is completed, the door lock actuator 1 can directly drive the door lock 3 to rotate from the second position to the third position, so that the lock matching component 200 located in the front lock groove 311 moves directly forward and out of the front lock groove 311, and the door body 500 opens relative to the door body 500.

[0067] In this embodiment, the door opening and closing device 100 further includes a door lock reset member 8, which causes the door lock member 3 to maintain or return to the first position. That is, when the driving force applied to the door lock member 3 by the door lock actuating mechanism 1 is cancelled, the door lock member 3 automatically resets to the first position under the action of the door lock reset member 8, which reduces the driving difficulty of the door lock actuating mechanism 1 and simplifies the control, which can meet the user's demand for manually closing the door and improve the user experience of the household appliance.

[0068] Specifically, the front end of the lock hook 31 has a guide surface, which extends obliquely from front to rear toward the opening of the lock groove. When the door body 500 is opened, the door lock 3 is in the first position; during the closing process of the door body 500, the lock fitting 200 first contacts the guide surface, pushing the lock hook 31 to rotate from the first position to the third position, so that the lock fitting 200 can move backward into the rear lock groove 312; and after the lock fitting 200 enters the rear lock groove 312, the door lock 3 returns to the first position under the action of the reset member, thereby ensuring that the door body 500 is in a stably closed state through the stable cooperation between the door lock 3 and the lock fitting 200.

[0069] In this embodiment, the lower end of the door body 500 is mounted on the machine body through a hinge mechanism. When the door body 500 is in a closed state or a venting state, the hinge mechanism applies a force to the door body 500 to cause the door body 500 to flip forward. Thus, when the door body 500 is in a closed state and the door lock 3 moves from the first position to the second position, the door body 500 can automatically flip forward under the action of the hinge mechanism, thereby driving the lock fitting 200 to move from the rear lock groove 312 to the front lock groove 311; when the door lock 3 moves to the third position, the door body 500 can flip forward under the action of the force applied by the hinge mechanism, so that the lock fitting 200 exits the matching range with the lock hook 31, and the machine door flips open. It is worth noting that when the angle of the door body 500 flipping relative to the door body 500 is greater than a certain angle, the hinge mechanism applies a force to the door body 500 to prevent the door body 500 from flipping downward, so that the door body 500 slowly opens. The specific structure of the hinge mechanism can be set with reference to the prior art, and will not be described in detail in this embodiment.

[0070] Furthermore, the machine body also includes a control device 600 installed on the top of the front frame 402, the control device 600 includes a mounting bracket 603, a control assembly 601 installed on the mounting bracket 603, and a front panel 602 covered on the front side of the mounting bracket 603, and the mounting bracket 603 is detachably connected to the front frame 402. The mounting bracket 603 includes a front panel portion 6031 and four side panels 6032 arranged around the four sides of the front panel portion 6031, and the side panel portion 6032 located on the lower side extends out of the front side of the wind shield 700 and the rear end overlaps with the front upper side of the wind shield 700. The specific structure of the control device 600 and the coordination arrangement of the control device 600 and other structures on the machine body can be set with reference to the prior art, which is not the focus of this embodiment and will not be repeated here.

[0071] The door lock 3 also includes a vertically arranged lock shaft 32, the lower end of which is connected to the rear end of the lock hook 31. The lock shaft 32 is rotatably mounted on the mounting base and the lower end thereof passes through the side plate 6032 on the lower side of the mounting bracket 603. The lock hook 31 is located at the front side of the air hood 700, so that the lock hook 31 is exposed outside the machine body, so as to facilitate the matching between the lock hook 31 and the lock matching member 200.

[0072] In this embodiment, the transmission assembly 12 includes a cam 121 and a transmission rod unit 122. The cam 121 is connected to the power output end so that the power output end drives the cam 121 to rotate around the first axis. The first end of the transmission rod unit 122 is hinged or abutted with the door lock 3. The second end of the transmission rod unit 122 abuts against the cam 121 so that the rotation of the cam 121 pushes the transmission rod unit 122 to move and forces the door lock 3 to rotate from the first position to the second position or to the third position. The structural setting of this transmission assembly 12 can separate the driving structure of the door lock actuator 1 from the door lock 3 in spatial position through the setting of the transmission rod unit 122, thereby avoiding the problem of requiring a large installation space due to the structure of the door opening and closing device 100 being concentrated together, and improving the installation convenience and installation flexibility of the door opening and closing device 100.

[0073] In other embodiments, the transmission assembly 12 may include a cam 121 instead of a transmission rod unit 122, and the cam 121 is connected to the power output end and driven by the power output end to rotate around the first axis to drive the door lock 3 to move. That is, in other embodiments, the cam 121 may directly act on the door lock 3 to drive the door lock 3 to rotate.

[0074] like Figure 4 and Figure 5 As shown, further, the door lock actuating mechanism 1 includes a door lock driver 11 having a power output end, and the door lock driver 11 is preferably a drive motor, and the motor shaft of the drive motor forms the power output end. The door lock component 3 is installed at the middle position of the body along the left-right direction, the door lock driver 11 is installed at one end of the body along the left-right direction, and the transmission rod unit 122 extends roughly along the left-right direction, thereby being able to reasonably utilize the top space of the body and avoid interference between structures caused by local structural concentration.

[0075] In order to improve the transmission convenience between the transmission rod unit 122 and the door lock 3, the door lock 3 also includes a driven part 33 connected to the lock shaft 32. The first end of the transmission rod unit 122 is hinged or abutted with the driven part 33, and the action position of the transmission rod unit 122 on the driven part 33 is spaced apart from the rotation axis of the lock shaft 32, thereby enabling the transmission rod unit 122 to move in the left and right directions to push the driven part 33 to rotate around the axis of the lock shaft 32, thereby causing the door lock 3 to rotate.

[0076] Furthermore, the transmission rod unit 122 includes a slide 1221 and a connecting rod 1222. The slide 1221 can be slidably installed on the slide 1221 along the left and right directions. The first end of the connecting rod 1222 is hinged to the driven part 33, and the second end of the connecting rod 1222 is hinged to the slide 1221. The cam 121 is located on the side of the slide 1221 away from the connecting rod 1222, and the cam 121 can rotate to push the slide 1221 to move in the direction toward the door lock 3.

[0077] To further improve the installation convenience of the door opening and closing device 100, the installation base includes a separately arranged drive seat 4 and a lock seat 5, the door lock drive member 11 is installed on the drive seat 4, the door lock member 3 is movably installed on the lock seat 5, and the slide seat 1221 is slidably installed on the lock seat 5.

[0078] like Figures 4 to 6 As shown, in this embodiment, when the stopper 23 is in the stopping position, the stopper 23 is on the moving path of the cam 121, that is, the stopper 23 moves through the stopping cam 121 to stop the movement of the transmission assembly 12, thereby ensuring that the door lock 3 can be stably maintained in the second position. Since the size of the cam 121 is relatively large and the space required for rotation is relatively large, it is conducive to the cooperation between the stopper 23 and the cam 121, thereby improving the stopping effect of the stopper 23. Further, the stopper assembly 2 is installed on the driving seat 4.

[0079] In another embodiment, the stop member 23 may also be located on the movable path of the transmission rod unit 122 to stop the movement of the transmission rod unit 122; in another embodiment, when the stop member 23 is in the stop position, the stop member 23 may also be located on the movable path of the door lock 3 to directly stop the movement of the door lock 3.

[0080] In this embodiment, the cam 121 rotates along the first rotation direction to actuate the door lock 3 to rotate from the first position to the second position, or to rotate from the first position to the third position beyond the second position. The stopper 23 has a stopper 232. When the stopper 23 is in the stop position, the stopper 232 is located at the front side of the cam 121 along the first rotation direction to abut against the side wall of the cam 121 and limit the cam 121 from further rotation. By locating the stopper 232 at the front side of the cam 121 in the first rotation direction, the cam 121 can be limited from further rotation by the abutment of the stopper 232 with the side wall of the cam 121, thereby ensuring the stopping and limiting effect of the cam 121.

[0081] In other embodiments, the stopper 23 may also contact other positions of the cam 121 to limit the movement of the cam 121 .

[0082] Furthermore, the first end of the cam 121 is connected to the output shaft 111 of the door lock driving member 11, so that the rotation of the output shaft 111 around its own axis drives the cam 121 to rotate, and the cam 121 has a second end opposite to the first end, and the second end of the cam 121 pushes the transmission rod unit 122 to move. When the second end of the cam 121 abuts against the transmission rod unit 122, the door lock member 3 is in the third position. When the stopper 23 is in the stop position, the stopper 232 abuts against the first end side wall of the cam 121, so that the force applied by the stopper 232 to the cam 121 can be set close to the rotation axis of the cam 121, thereby reducing the probability of the problem of bending and damage due to the pressure of the stopper 232, and improving the reliability of the door opening and closing device 100.

[0083] In order to improve the convenience of setting the stopper 23, the stopper 23 can be rotatably mounted on the mounting base around the second axis, specifically mounted on the driving seat 4. The stopper assembly 2 includes a stopper driving member 21, and the stopper driving member 21 has a transmission shaft 212 that can rotate around its own axis. The stopper 23 is mounted on the transmission shaft 212, so that the rotation of the transmission shaft 212 drives the stopper 23 to rotate, so that the stopper 23 is switched from the non-blocking position to the blocking position, and the axis of the transmission shaft 212 is the second axis. The stopper driving member 21 is communicatively connected to the control device 600.

[0084] When it is necessary to open the door for exhaust, the main control board 900 issues a command to the stopper driver 21, and the stopper driver 21 drives the stopper 23 to rotate to the stopper position. At the same time, the main control board 900 issues a command to the door lock driver 11, so that the door lock driver 11 actuates the cam 121 to rotate, so as to drive the door lock 3 to rotate from the first position to the second position; and when the cam 121 rotates to the door lock 3 in the second position, the cam 121 contacts the stopper 23 and is restricted from continuing to rotate, so that the door lock 3 is stably maintained in the second position. That is, the stopper driver 21 drives the stopper 23 to rotate to the stopper position before the door lock driver 11 drives the door lock 3 to rotate to the second position, or it can be done at the same time, so that the cam 121 can be accurately parked at the position where the door lock 3 is in the second position without detecting the position of the cam 121, the transmission rod unit 122 or the door lock 3.

[0085] In other embodiments, the door lock component 3 may also be slidably mounted on the mounting base, that is, the stop driving component 21 drives the door lock component 3 to slide from the non-blocking position to the stop position.

[0086] In order to improve the installation convenience of the stopper assembly 2 at the mounting base, the mounting base has a driving cavity 43, the cam 121 is spaced apart from the cavity bottom of the driving cavity 43, the door lock driver 11 is installed on the upper side of the cam 121, and the first axis is vertically arranged. When the stopper 23 is in the non-blocking position, the stopper 23 is located between the cam 121 and the cavity bottom of the driving cavity 43. This arrangement enables the door lock driver 11, the cam 121 and the stopper assembly 2 to be arranged on the mounting base in sequence from top to bottom, thereby reducing the size of the portion of the mounting base where the cam 121 is arranged in the left-right direction or the front-back direction, which is conducive to reducing the overall size of the driving base 4 and improving the installation convenience of the door opening and closing device 100 on the driving base 4; at the same time, this arrangement can also effectively avoid interference between the stopper 23 and the transmission assembly 12 when the stopper 23 is in the non-blocking position.

[0087] Further, the driving cavity 43 includes a first cavity 431 and a second cavity 432 which are connected, the cavity bottom of the first cavity 431 is lower than the cavity bottom of the second cavity 432, the stopper assembly 2 is mounted on the first cavity 431, and the second end of the transmission rod unit 122 is slidably mounted on the second cavity 432, that is, the slide 1221 is slidably mounted on the second cavity 432. This arrangement can increase the depth of the first cavity 431 to improve the installation convenience of the stopper assembly 2, and is also conducive to ensuring that the cam 121 and the transmission rod unit 122 are at approximately the same level, thereby ensuring the reliability of the drive.

[0088] In order to improve the convenience of disassembly and assembly of the cam 121 and the stopper assembly 2, the drive seat 4 includes a base 42 and an upper cover 41, the base 42 has an upper open groove, the upper cover 41 is detachably mounted on the opening of the groove, and the upper cover 41 and the base 42 are enclosed to form the above-mentioned drive cavity 43. Further, the upper cover 41 is provided with a cover opening 411, the motor body of the door lock driver 11 is mounted on the upper side of the upper cover 41, and the output shaft 111 of the door lock driver 11 passes through the cover opening 411 to extend into the drive cavity 43. Installing the door lock driver 11 on the upper side of the upper cover 41 is conducive to heat dissipation of the door lock driver 11 and reduces the overall height of the drive seat 4.

[0089] The side wall of the cam 121 is vertically arranged, and the cam 121 rotates in a horizontal plane perpendicular to the first axis. In this embodiment, the stopper 232 is a plate-like structure and is vertically arranged to increase the contact area between the stopper 232 and the side wall of the cam 121, thereby ensuring the effect of stopping the cam 121 and avoiding stress concentration caused by point contact between the stopper 232 and the cam 121.

[0090] In order to prevent the stopper 23 from being damaged due to the force applied by the cam 121 to the stopper 232, in this embodiment, the stopper 23 further includes a connecting plate 231, which is arranged parallel to the second axis, and the stopper 232 is connected to the upper end of the connecting portion 611 and is arranged perpendicular to the second axis. This arrangement can facilitate the installation of the stopper 23 and the stopper driving member 21, and can also enhance the overall structural strength and rigidity of the stopper 23, reduce the probability of the stopper 23 being damaged by force, and improve the long-term use reliability of the stopper assembly 2.

[0091] Furthermore, the connecting plate portion 231 includes a first plate portion and a second plate portion, the length of the first plate portion along the second axis is greater than the length of the second plate portion along the second axis, the second plate portion is connected to one side of the upper end of the first plate portion, and the connecting plate portion 231 is vertically connected to the second plate portion. The first plate portion is always located below the cam 121. This arrangement can increase the length of the connecting plate portion 231 while avoiding interference between the connecting plate portion 231 and the cam 121, thereby improving the structural stability of the stopper 23.

[0092] In this embodiment, the stopper driving member 21 includes a stopper driving motor 211 and the transmission shaft 212, and the transmission shaft 212 is coaxially connected to the motor shaft of the stopper driving motor 211 to improve the installation convenience of the stopper 23 on the transmission shaft 212. Specifically, the stopper 23 includes a fixed installation portion 233 connected to the connecting plate portion 231 and a side away from the stopper portion 232, and the fixed installation portion 233 is sleeved on the transmission shaft 212, and preferably two fixed installation portions 233 are arranged at intervals along the extension direction of the transmission shaft 212 to ensure the installation stability and reliability of the stopper 23.

[0093] Further, two mounting ears 44 are protruding from the bottom of the driving cavity 43, and the two mounting ears 44 are spaced apart along the second axis. The transmission shaft 212 is rotatably passed through the two mounting ears 44 to realize the rotatable installation of the transmission shaft 212 on the driving seat 4. The extension direction of the transmission shaft 212 is preferably perpendicular to the extension direction of the first axis and the transmission rod unit 122.

[0094] In the embodiment, the stopper assembly 2 further includes a stopper reset member 22, which can cause the cam 121 to maintain or return to the position of the cam 121, so that after the stopper driving member 21 is powered off, the stopper 23 can automatically reset, thereby preventing the setting of the stopper 23 from affecting the normal operation of the door lock actuating mechanism 1, and ensuring the operational reliability of the stopper assembly 2. The stopper reset member 22 is preferably a torsion spring, which is sleeved on the transmission shaft 212 and has a first end abutting against the stopper 23. The torsion spring is preferably located between the two fixed mounting portions 233 of the stopper 23.

[0095] Furthermore, a position detection component 7 is installed in the driving cavity 43, and the position detection component 7 is used to detect the position of the cam 121. The position detection component 7 is communicated with the main control board 900 so that the main control board 900 controls the operation of the door lock driving component 11 according to the position of the cam 121 detected by the position detection component 7.

[0096] like Figure 1 and Figures 5 to 9 As shown, the drive seat 4 is installed on the upper side of the wind cover 700, and the exhaust air duct 704 includes a condensation air duct 7042 and a heat dissipation air duct 7041 that are separated and thermally conductive. The condensation air duct 7042 is connected to the inner cavity of the inner tank 300, and the heat dissipation fan 800 guides the external cooling air flow into the condensation air duct 7042 to condense and cool the steam in the heat dissipation air duct 7041. The front ends of the condensation air duct 7042 and the heat dissipation air duct 7041 are both connected to the exhaust port 703.

[0097] The bottom of the driving cavity 43 is provided with a heat dissipation vent 421, the upper side of the wind cover 700 is provided with an air inlet 705, and the household appliance has an air guide structure 6, which guides part of the cooling airflow of the heat dissipation duct 7041 to enter the driving cavity 43 through the air inlet 705 and the heat dissipation vent 421 in sequence. By providing the air guide structure 6, the electrical components in the driving cavity 43 can be cooled down to avoid heat accumulation in the driving cavity 43 and affecting the safety of use; at the same time, the cold air in the heat dissipation duct 7041 is guided into the driving cavity 43 by the air guide structure 6, which can simplify the structure and reduce the cost.

[0098] The air guide structure 6 includes a first air guide plate 61 that penetrates the heat dissipation air outlet 421 and the air inlet 705. The upper end of the first air guide plate 61 is located in the driving cavity 43, the lower end of the first air guide plate 61 is located in the heat dissipation air duct 7041, and the first air guide plate 61 is inclined from top to bottom toward the upstream of the air inlet 705. The arrangement of the first air guide plate 61 can further simplify the arrangement of the air guide structure 6 and enhance the guiding effect.

[0099] To enhance the wind guiding effect, the wind guiding structure 6 includes an inner wind guiding component disposed inside the wind cover 700 , and the inner wind guiding component guides the cooling air flow of the heat dissipation air duct 7041 to flow toward the air inlet 705 .

[0100] In this embodiment, the upper end of the first air guide plate 61 is rotatably sleeved on the transmission shaft 212, thereby simplifying the installation structure of the air guide plate, avoiding the need to additionally set other structures in the driving cavity 43 to install the first air guide plate 61, and improving the compactness of the door opening and closing device 100. In other embodiments, the first air guide plate 61 may also be separately provided from the stopper assembly 2.

[0101] Specifically, a connecting portion 611 is provided at the upper end of the first air guide plate 61, and the connecting portion 611 is rotatably sleeved on the transmission shaft 212. Preferably, two connecting portions 611 are provided at intervals along the axial direction of the transmission shaft 212. Further, the first air guide plate 61 and the stopper 23 are arranged opposite to each other and at intervals in the circumferential direction of the transmission shaft 212 to improve the compactness of the structure. The second end of the torsion spring is pressed against the first air guide plate 61, so that the first air guide plate 61 can be in a stable air guiding state relative to the air guide cover 700, thereby ensuring the reliability of the air guiding.

[0102] The air guide structure 6 further includes a second air guide plate 62, which is connected to the lower end of the first air guide plate 61 and extends in the direction of the cooling air flow, and the angle between the second air guide plate 62 and the horizontal plane is smaller than the angle between the second air guide plate 62 and the horizontal plane. The second air guide plate 62 is provided to enhance the guiding effect of the cooling air flow, thereby increasing the amount of air entering the driving cavity 43 from the heat dissipation air duct 7041, and improving the cooling effect.

[0103] Furthermore, the wind hood 700 includes a hood body 701, and both sides of the front end of the hood body 701 have extended hood parts 702 extending outward in the left and right directions. The air inlet 705 is arranged on the upper side of the extended hood part 702, and the heat dissipation duct 7041 extends from the hood body 701 to the extended hood part 702, and the first air guide plate 61 extends from top to bottom in the direction toward the door lock 3, and the second air guide plate 62 extends in the direction away from the first air guide plate 61 toward the door lock 3.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A door opening and closing device, used to cooperate with a lock matching member (200) on a door body (500), characterized in that: The door opening and closing device comprises: Install the base; a door lock (3), the door lock (3) being arranged to be movable relative to the mounting base so as to be in a first position for restricting the door body (500) from opening, a second position for allowing the door body (500) to open and remain at a set angle, and a third position for releasing the restriction on the door body (500); A door lock actuating mechanism (1), wherein the power output end of the door lock actuating mechanism (1) has a transmission assembly (12), and the transmission assembly (12) acts on the door lock component (3) to move the door lock component (3) from the first position to the second position, or to move the door lock component (3) from the first position past the second position to the third position; A stop member (23) can be movably constrained on the mounting base and has a stop position and a non-blocking position. When the stop member (23) moves to the stop position, the stop member (23) is located on the moving path of the transmission assembly (12) or the door lock member (3) to limit the door lock member (3) in the second position from continuing to move toward the third position.

2. The door opening and closing device according to claim 1, characterized in that: The transmission assembly (12) comprises a cam (121), the cam (121) being connected to the power output end and driven by the power output end to rotate around a first axis to drive the door lock member (3) to move, and when the stop member (23) is in the stop position, the stop member (23) is on the moving path of the cam (121); Alternatively, the transmission assembly (12) comprises a cam (121) and a transmission rod unit (122), the first end of the transmission rod unit (122) being hinged or abutted against the door lock (3), the second end of the transmission rod unit (122) being abutted against the cam (121), the cam (121) being connected to the power output end, the power output end driving the cam (121) to rotate around a first axis, so that the rotation of the cam (121) pushes the transmission rod unit (122) to move, and forces the door lock (3) to move from the first position to the second position or to the third position, and when the stop member (23) is in the stop position, the stop member (23) is located on the moving path of the cam (121) or the transmission rod unit (122).

3. The door opening and closing device according to claim 2, characterized in that: The power output end drives the stopper (23) to rotate along a first rotation direction, and the stopper (23) has a stop portion (232). When the stopper (23) is at the stop position, the stop portion (232) is located at the front side of the cam (121) along the first rotation direction, so as to abut against the side wall of the cam (121) and limit the cam (121) from continuing to rotate; And / or, the door opening and closing device further comprises a stop driving member (21), the stop driving member (21) having a transmission shaft (212) that can rotate around its own axis, and the stop member (23) is mounted on the transmission shaft (212), so that the rotation of the transmission shaft (212) drives the stop member (23) to rotate from the non-blocking position to the stop position.

4. The door opening and closing device according to claim 3, characterized in that: The cam (121) has a first end close to the power output end and a second end arranged opposite to the first end. When the stopper (23) is in the stop position, the stopper (23) abuts against a side wall of the first end of the cam (121).

5. The door opening and closing device according to claim 3, characterized in that: The mounting base has a driving cavity (43), and the cam (121) is spaced apart from the bottom of the driving cavity (43); The door lock actuating mechanism (1) comprises a door lock driving member (11) having the power output end, the door lock driving member (11) being mounted on the upper side of the cam (121) and the first axis being arranged vertically, and the stop member (23) being located in the non-blocking position, the stop member (23) being located between the cam (121) and the bottom of the driving cavity (43).

6. The door opening and closing device according to claim 5, characterized in that: The driving cavity (43) comprises a first cavity portion (431) and a second cavity portion (432) which are connected, the cavity bottom of the first cavity portion (431) is lower than the cavity bottom of the second cavity portion (432), the stopper (23) is installed in the first cavity portion (431), and the second end of the transmission rod unit (122) is slidably installed in the second cavity portion (432).

7. The door opening and closing device according to claim 3, characterized in that: The stopper (23) further comprises a connecting plate portion (231), wherein the connecting plate portion (231) is parallel to the axis of the transmission shaft (212), and the stopper portion (232) is connected to the upper end of the connecting plate portion (231) and is perpendicular to the axis of the transmission shaft (212); And / or, the door opening and closing device further comprises a stop and reset member (22), wherein the stop and reset member (22) acts on the stop member (23) so as to keep the stop member (23) or restore it to the non-blocking position.

8. The door opening and closing device according to any one of claims 1 to 7, characterized in that: The door lock (3) comprises a lock hook (31), the lock hook (31) extends from the back to the front and the rear end is rotatably mounted on the mounting base, the lock hook (31) has a lock slot with an opening on one side, a partition (313) is convexly provided on the slot wall of the lock slot directly opposite to the opening, and the partition (313) extends toward the opening to separate the lock slot into a front lock slot (311) located at the front side of the partition (313) and a rear lock slot (312) located at the rear side of the partition (313); When the door lock component (3) is in the first position, the door lock component (3) limits the lock matching component (200) when the door body (500) is closed to the rear lock groove (312); When the door lock component (3) is in the second position, the door lock component (3) allows the lock fitting component (200) to move from the rear lock groove (312) to the front lock groove (311) and be limited in the front lock groove (311), so that the door body (500) is opened to a preset angle; When the door lock component (3) is in the third position, the door lock component (3) allows the lock fitting component (200) to move forward and exit the lock slot, so that the door body (500) can be opened.

9. The door opening and closing device according to any one of claims 1 to 7, characterized in that: The mounting base comprises a lock seat (5) and a drive seat (4) which are separately arranged, the door lock component (3) is movably mounted on the lock seat (5), and the door lock actuating mechanism (1) and the stopper (23) are mounted on the drive seat (4).

10. A household appliance, comprising a body and a door (500) movably mounted on the front side of the body, wherein a lock fitting (200) is provided on the door (500), characterized in that: It also includes the door opening and closing device according to any one of claims 1 to 9, wherein the mounting base is mounted on the machine body; When the door lock component (3) is in the first position, the door lock component (3) and the lock matching component (200) are in a first locking state to restrict the door body (500) from opening relative to the machine body; When the door lock component (3) is in the second position, the door lock component (3) and the lock matching component (200) are in a second locking state so that the door body (500) can be opened to a set angle relative to the machine body; When the door lock component (3) is in the third position, the lock fitting (200) can be disengaged from the door lock component (3) forwards to allow the door body (500) to open relative to the machine body.

Images