Dish washing machine capable of automatically opening and closing door

Abstract

The utility model discloses a dish-washing machine capable of automatically opening and closing a door, an automatic door opening and closing structure is arranged on a dish-washing machine main body, and a door lock is arranged in a door body; a driving gear of the automatic door opening and closing structure is fixedly connected with a rotating shaft of a driving motor, the driving gear is meshed with a driven gear to drive the driven gear to rotate, and a swing rod is rotationally connected with the driven gear and a push-pull rod; an elastic assembly of the door lock is connected with the locking assembly and enables the locking assembly to reset after moving; in a door closing state, the axial direction of the oscillating rod is parallel to the axial direction of the push-pull rod, and the total length of the axial projection of the oscillating rod and the driven gear along the push-pull rod is shortest; meanwhile, the locking assembly abuts against the push-pull rod and is locked with the locking groove; in a door opening state, the axial direction of the oscillating rod is parallel to the axial direction of the push-pull rod, and the total length of the axial projection of the oscillating rod and the driven gear along the push-pull rod is longest; meanwhile, the locking assembly completely retreats from the locking groove. The dish-washing machine capable of automatically opening and closing the door can automatically open and close the door, dissipate moisture and improve the drying degree of tableware.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a dishwasher with an automatic door opening and closing. Background Art

[0002] Traditional dishwashers need to close the door before washing dishes, and after washing dishes, they need to be manually opened. As a result, after washing dishes, the moisture on the dishes cannot be released in time, the water vapor inside cannot be released automatically, and the degree of drying of the dishes is poor.

[0003] Furthermore, when washing dishes, the dishwasher needs to close the door securely to prevent water from spraying out. The existing dishwasher door has the problem of not being securely closed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a dishwasher with an automatic door opening and closing.

[0005] The utility model solves the technical problem by adopting a technical solution: a dishwasher with automatic door opening and closing, comprising a door body and a dishwasher main body with an opening, wherein the door body is arranged corresponding to the opening and is rotatably connected to the dishwasher main body; the dishwasher further comprises a door lock and an automatic door opening and closing structure, wherein the automatic door opening and closing structure is installed on the dishwasher main body, and the door lock is installed inside the door body;

[0006] The automatic door opening and closing structure comprises a driving motor, a driving gear, a driven gear, a swinging rod and a push-pull rod provided with a locking groove, wherein the driving motor is fixedly installed in the dishwasher body, the driving gear is fixedly connected to the rotating shaft of the driving motor, the driving gear is meshed with the driven gear to drive the driven gear to rotate, and the swinging rod is rotatably connected to the driven gear and the push-pull rod respectively;

[0007] The door lock comprises a locking assembly and an elastic assembly, wherein the locking assembly is mounted on the door body, and the elastic assembly is connected to the locking assembly and enables the locking assembly to reset after being moved;

[0008] The dishwasher includes a door-closed state and a door-open state:

[0009] In the door closing state: the axial direction of the swing rod is parallel to the axial direction of the push-pull rod and the total length of the swing rod and the driven gear along the axial direction of the push-pull rod is the shortest; at the same time, the locking assembly abuts against the push-pull rod and is locked with the locking groove;

[0010] In the door-opening state, the axial direction of the swing rod is parallel to the axial direction of the push-pull rod and the total length of the axial projection of the swing rod and the driven gear along the push-pull rod is the longest; at the same time, the locking assembly completely withdraws from the locking groove.

[0011] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the locking assembly includes a first locking member and a second locking member, and the elastic assembly includes a first elastic member and a second elastic member;

[0012] The first locking member is rotatably mounted in the door body, and the first elastic member is connected to the first locking member and enables the first locking member to return to its original position after rotation;

[0013] The second locking member is slidably installed in the door body along the radial direction of the first locking member and abuts against the first locking member, the first end of the second elastic member is connected to or abuts against the door body, and the second end of the second elastic member is connected to or abuts against the second locking member and provides elastic force for the second locking member;

[0014] The first locking member is provided with a protrusion near the second locking member, and two sides of the protrusion are respectively an unlocking point and a locking point;

[0015] In the door closing state: the first locking member abuts against the end of the push-pull rod and is locked with the locking groove, and the second locking member abuts against the locking point;

[0016] In the door-open state: the first locking member completely withdraws from the locking groove, and the second locking member abuts against the unlocking point.

[0017] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the first locking member comprises a locking body, a protrusion, a rotation connection part, an abutment part for the push-pull rod to abut, and a locking part for the locking groove to connect, the protrusion, the abutment part and the locking part are respectively arranged at intervals on the outer periphery of the locking body, the rotation connection part penetrates the locking body and is fixedly connected, and the rotation connection part is rotationally connected to the door body;

[0018] The first elastic member is connected to the locking body and enables the locking body to return to its original position after rotation.

[0019] Preferably, in the dishwasher with automatic door opening and closing described in the present invention, the second locking member includes a locking head and a mounting section, one end of the mounting section close to the first locking member is connected to the locking head, and one end of the mounting section away from the first locking member is connected to the second elastic member; the locking head abuts against the first locking member.

[0020] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the first locking member further comprises a contact portion, and the contact portion is arranged outside the rotating connection portion or the locking body and rotates synchronously;

[0021] The door lock further comprises a first micro switch, which is installed in the door body and is connected when abutting against the contact portion;

[0022] The length of the contact portion along the radial direction of the first locking member is greater than the distance between the rotating connection portion and the first micro switch.

[0023] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the driven gear comprises a gear body, a positioning shaft and driven gear teeth arranged on the periphery of the gear body, the gear body is rotatably sleeved on the positioning shaft, and the positioning shaft is fixedly connected to the dishwasher body;

[0024] The driven gear also includes a first connecting portion arranged close to the driven gear teeth, wherein the first connecting portion is arranged on the gear body and is rotationally connected to the swing rod.

[0025] Preferably, in the dishwasher with automatic door opening and closing described in the utility model, the push-pull rod includes a rod body and a second connecting portion, and the second connecting portion is arranged on the rod body and is rotatably connected to the swing rod.

[0026] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the push-pull rod further comprises a door opening card point and a door closing card point, and the door opening card point and the door closing card point are arranged on the rod body at intervals along the first direction;

[0027] The automatic door opening and closing structure further includes a second micro switch and a third micro switch, wherein the second micro switch is fixedly installed in the dishwasher body and is connected when it abuts against the door opening card point; the third micro switch is fixedly installed in the dishwasher body and is connected when it abuts against the door closing card point;

[0028] The first direction is the axial direction of the rod body.

[0029] Preferably, in the dishwasher with automatic door opening and closing described in the utility model, the automatic door opening and closing structure also includes a shell for installing the drive motor, the driving gear, the driven gear, the swing rod, the push-pull rod, the second micro switch and the third micro switch, and the shell is provided with a moving channel along the first direction for the swing rod to telescopically move along the first direction.

[0030] Preferably, in the dishwasher with automatic door opening and closing of the utility model, the reduction ratio between the driving gear and the driven gear is greater than or equal to 2:1.

[0031] By implementing the utility model, the following beneficial effects are achieved:

[0032] The utility model discloses a dishwasher with automatic door opening and closing, which includes a door lock and an automatic door opening and closing structure. The automatic door opening and closing structure includes a driving motor, a driving gear, a driven gear, a swing rod and a push-pull rod provided with a locking groove. The driving motor is fixedly installed in the main body of the dishwasher, the driving gear is fixedly connected to the rotating shaft of the driving motor, the driving gear is meshed with the driven gear to drive the driven gear to rotate, and the swing rod is respectively connected to the driven gear and the push-pull rod. The thrust or pulling force of the push-pull rod is large when opening and closing the door, and the thrust or pulling force is small during the process from opening to closing the door, which satisfies the friction force and actual needs of opening and closing the door and realizes the automatic opening and closing of the dishwasher door. In addition, the door lock includes a locking assembly and an elastic assembly, which is connected to the locking assembly and resets the locking assembly after moving. When closing the door, the locking assembly approaches and clamps the locking groove of the push-pull rod to lock it to prevent it from bouncing open, so as to close the door and lock it, thereby preventing the water inside from spraying out when washing dishes. When opening the door, no manual operation is required. The drive motor is automatically started to drive the active gear to rotate, and the active gear drives the driven gear to rotate, thereby driving the swing rod to swing, and finally drives the push-pull rod to push the locking component, so that the locking component releases the locking groove to unlock and open the door. It can automatically release the water vapor inside the dishwasher, dissipate moisture in time, and improve the dryness of the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0034] Figure 1 1 is a structural schematic diagram of a dishwasher according to an embodiment of the utility model, and the diagram shows a closed door state of the dishwasher;

[0035] Figure 2 yes Figure 1 A schematic diagram of a structure of a dishwasher having a door opening position, in which the total length of the axial projection of the swing arm and the driven gear along the push-pull rod is the longest;

[0036] Figure 3 yes Figure 1 A structural schematic diagram of the automatic door opening and closing structure in the closed state;

[0037] Figure 4 yes Figure 1 A structural schematic diagram of an automatic door opening and closing structure in an open door state;

[0038] Figure 5 yes Figure 1 The overall structural diagram of the door lock in FIG.

[0039] Figure 6 yes Figure 5A structural schematic diagram of the locked state of the door lock, i.e., the closed state of the dishwasher;

[0040] Figure 7 yes Figure 5 A structural schematic diagram of the unlocking state (unlocking moment) of the door lock in FIG. 1 , that is, the door opening state (door opening moment) of the dishwasher;

[0041] Figure 8 yes Figure 5 Schematic diagram of the structure of the first locking member. DETAILED DESCRIPTION

[0042] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0044] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0046] See also Figure 1 and Figure 2 An embodiment of the utility model discloses a dishwasher with an automatic door opening and closing, which can be reliably locked during the dishwashing process and automatically open the door after the dishwashing is completed.

[0047] The dishwasher with automatic door opening and closing includes a door body 200, a dishwasher main body 100 with an opening, a door lock 300 and an automatic door opening and closing structure 400. The door body 200 is arranged corresponding to the opening and is rotatably connected to the dishwasher main body 100. The automatic door opening and closing structure 400 is installed on the dishwasher main body 100, and the door lock 300 is installed inside the door body 200.

[0048] See also Figure 3 and Figure 4 The automatic door opening and closing structure 400 includes a driving motor 410, a driving gear 420, a driven gear 430, a swing rod 440, a push-pull rod 450 with a locking groove 455, and a housing 460. Figure 3 The housing 460 is not shown; Figure 4 Only a part of the housing 460 is shown, and the swing rod 440 overlaps with the driven gear 430. The housing 460 is installed in the dishwasher body 100, the driving gear 420 is fixedly connected to the rotating shaft of the driving motor 410, the driving motor 410 is connected to an external power source, the driving gear 420 is meshed with the driven gear 430 to drive the driven gear 430 to rotate, and the swing rod 440 is rotatably connected to the driven gear 430 and the push-pull rod 450 respectively. The driving motor 410, the driving gear 420, the driven gear 430, the swing rod 440 and the push-pull rod 450 are all arranged inside the housing 460, and the free end 456 of the push-pull rod 450 away from the swing rod 440 extends out of the housing 460 and can extend out of the dishwasher body 100. Preferably, the number of teeth of the driving gear 420 is less than the number of teeth of the driven gear 430, so as to achieve a deceleration function. In this embodiment, the reduction ratio between the driving gear 420 and the driven gear 430 is greater than or equal to 2:1, such as 2:1, 3:1, 4:1, etc.

[0049] The door lock 300 includes a locking assembly, an elastic assembly and a mounting shell 310. The mounting shell 310 is mounted in the door body 200, the locking assembly is mounted on the mounting shell 310, and the elastic assembly is connected to the locking assembly and enables the locking assembly to reset after moving.

[0050] The dishwasher includes a closed door state and an open door state: see Figure 1 , Figure 3 and Figure 6 In the closed state: the axial direction of the swing rod 440 is parallel to the axial direction of the push-pull rod 450 and the total length of the swing rod 440 and the driven gear 430 along the axial direction of the push-pull rod 450 is the shortest. At the same time, the locking assembly abuts against the push-pull rod 450 and is locked with the locking groove 455. Figure 2 , Figure 4 and Figure 7In the door open state, the axial direction of the swing rod 440 is parallel to the axial direction of the push-pull rod 450 and the total length of the axial projection of the swing rod 440 and the driven gear 430 along the push-pull rod 450 is the longest. At the same time, the locking assembly completely exits the locking groove 455. Figure 7 The figure shows the unlocking state of the door lock 300, that is, the opening state of the dishwasher. Figure 4 After the door is opened, Figure 2 A position state after the door body 200 is opened is shown, at this time, the push-pull rod 450 is away from the door lock 300, and the locking component returns to its original position under the action of the elastic component.

[0051] in, Figure 3 The closed state of the automatic door opening and closing structure 400 and Figure 6 The locked state of the middle door lock 300 corresponds to Figure 1 The dishwasher door is closed. Figure 7 The unlocking status of the central door lock 300 corresponds to Figure 4 The door opening state of the automatic door opening and closing structure 400. Figure 2 It is one of the door opening positions after the automatic door opening and closing structure 400 of the dishwasher is separated from the door lock 300.

[0052] Generally, there is a transition state between the door opening state and the door closing state. The first transition state is the process from the door opening state to the door closing state. At this time, the axial direction of the swing rod 440 forms an angle with the axial direction of the push-pull rod 450, and the angle changes in a trend of small → large → small, and the total length of the swing rod 440 and the driven gear 430 along the axial direction of the push-pull rod 450 changes in a trend of long → short. The second transition state is the process from the door closing state to the door opening state. At this time, the axial direction of the swing rod 440 forms an angle with the axial direction of the push-pull rod 450, and the angle changes in a trend of small → large → small, and the total length of the swing rod 440 and the driven gear 430 along the axial direction of the push-pull rod 450 changes in a trend of short → long. At the same time, the locking assembly gradually approaches the push-pull rod 450.

[0053] Among them, since the pulling force and pushing force required for opening and closing the door are the largest, the pushing force or pulling force given by the swing rod 440 to the push-pull rod 450 in the door opening state and the door closing state is relatively large. In the transition state, when the swing rod 440 drives the push-pull rod 450 to move, the pushing force or pulling force given by the swing rod 440 to the push-pull rod 450 is a variable force, which can achieve the effect of slowing down the speed during the door opening or closing process.

[0054] Furthermore, if Figure 3 and Figure 4As shown, the driven gear 430 includes a gear body 431, a positioning shaft 433 and driven gear teeth 434 arranged on the outer periphery of the gear body 431, the gear body 431 is rotatably sleeved on the positioning shaft 433, and the positioning shaft 433 is fixedly connected to the dishwasher body 100. The driven gear 430 also includes a first connecting portion arranged near the driven gear teeth 434, the first connecting portion is arranged on the gear body 431, and is rotatably connected to the swing rod 440. Preferably, the first connecting portion is a first mounting hole for connecting the swing rod 440, the first mounting hole is opened on the gear body 431, and the first mounting hole is arranged near the driven gear teeth 434, that is, the swing rod 440 is connected to the edge position of the driven gear 430, so as to ensure that the driven gear 430 can drive the swing rod 440 to produce a larger displacement when rotating.

[0055] The housing 460 is provided with a moving channel along the first direction for the swing rod 440 to telescopically move along the first direction, wherein the moving channel is covered by the push-pull rod 450, which is not shown in the figure.

[0056] The push-pull rod 450 includes a rod body 451, a second connecting portion, a door opening card point 453 and a door closing card point 454. The second connecting portion is arranged on the rod body 451 and is rotatably connected to the swing rod 440. The door opening card point 453 and the door closing card point 454 are arranged on the rod body 451 at intervals along the first direction. The distance between the door opening card point 453 and the door closing card point 454 is determined according to the actual required door opening amplitude and installation position, and the utility model does not limit it here. The first direction here is the axial direction of the rod body 451, and the door opening card point 453 and the door closing card point 454 are respectively arranged on opposite sides of the rod body 451. Preferably, the second connecting portion is a second mounting hole for the swing rod 440 to connect. The door opening card point 453 and the door closing card point 454 are arc grooves respectively to prevent jamming.

[0057] The automatic door opening and closing structure 400 further includes a second micro switch 470 and a third micro switch 480. The second micro switch 470 is fixedly installed in the housing 460 and is connected when it abuts against the door opening card point 453. The third micro switch 480 is fixedly installed in the dishwasher body 100 and is connected when it abuts against the door closing card point 454. Preferably, in some embodiments, in order to better install the second micro switch 470 and the third micro switch 480, the automatic door opening and closing structure 400 further includes a position sensing circuit board 490, and the second micro switch 470 and the third micro switch 480 are connected to the position sensing circuit board 490. In this embodiment, the second micro switch 470 and the third micro switch 480 are respectively arranged on opposite sides of the moving channel, the position sensing circuit board 490 spans the moving channel, and the push-pull rod 450 moves above or below the position sensing circuit board 490 and is always located between the second micro switch 470 and the third micro switch 480.

[0058] In order to realize the rotatable installation of the swing rod 440, connecting holes are respectively provided at the opposite ends of the swing rod 440, and the connecting holes are rotatably connected with the first mounting hole and the second mounting hole through existing connecting parts such as fasteners and hinges that can realize movable connection.

[0059] Furthermore, if Figures 5 to 8 As shown, the door lock 300 includes a mounting shell 310, a first locking member 320, a second locking member 330, a first elastic member 340, a second elastic member 350 and a first micro switch 360. The mounting shell 310 is mounted in the door body 200, and the first locking member 320, the second locking member 330, the first elastic member 340, the second elastic member 350 and the first micro switch 360 are mounted in the mounting shell 310. The first locking member 320 is rotatably mounted in the mounting shell 310, and the first elastic member 340 is connected to the first locking member 320 and allows the first locking member 320 to reset after rotation. Among them, the first locking member 320 and the second locking member 330 constitute a locking assembly, and the first elastic member 340 and the second elastic member 350 constitute an elastic assembly.

[0060] The second locking member 330 is installed in the mounting shell 310 along the radial sliding of the first locking member 320 and abuts against the first locking member 320. The first end of the second elastic member 350 is connected to or abuts against the door body 200. The second end of the second elastic member 350 is connected to or abuts against the second locking member 330 and provides elastic force for the second locking member 330.

[0061] The first locking member 320 is provided with a protrusion 322 near the second locking member 330, and the two sides of the protrusion 322 are respectively an unlocking point and a locking point. The first micro switch 360 is installed in the mounting shell 310 and is connected when it abuts against the first locking member 320. The first micro switch 360 is connected or disconnected to identify the lock state of the door lock 300. Figure 6 As shown, in the closed state: the first locking member 320 abuts against the end of the push-pull rod 450 and is locked with the locking groove 455, and the second locking member 330 abuts against the locking point. At this time, the first locking member 320 abuts against the first micro switch 360, which is also in the closed state. Figure 7 As shown, in the door open state: the first locking member 320 completely withdraws from the locking groove 455, and the second locking member 330 abuts against the unlocking point. At this time, the first locking member 320 leaves the first micro switch 360 and is disconnected, which is also an unlocked state.

[0062] like Figure 5As shown, the mounting shell 310 includes a main shell 311 fixedly connected to the door body 200, a rotating shaft 312 rotatably connected to the first locking member 320, two mounting seats 313 supporting the rotating shaft 312, and a sliding groove 314 slidably connected to the second locking member 330. The two mounting seats 313 are spaced apart in the axial direction of the first locking member 320, the rotating shaft 312 is fixedly mounted on the two mounting seats 313, and the axial direction of the sliding groove 314 is perpendicular to the axial direction of the rotating shaft 312.

[0063] like Figure 8 As shown, the first locking member 320 includes a locking body 321, a protrusion 322, a rotation connection portion 323, abutment portion 324, a locking portion 325 and a contact portion 328. The protrusion 322, the abutment portion 324 and the locking portion 325 are respectively arranged at intervals on the outer periphery of the locking body 321. The rotation connection portion 323 penetrates the locking body 321 and is fixedly connected, and the rotation connection portion 323 is rotationally connected to the door body 200. The abutment portion 324 abuts against the push-pull rod 450, and the locking portion 325 is connected to the locking groove 455. The first elastic member 340 is connected to the locking body 321 and allows the locking body 321 to return to its original position after rotation. The rotating connection part 323 is sleeved on the rotating shaft 312 to realize rotation and thereby drive the locking body 321. The contact part 328 is arranged on the outside of the rotating connection part 323 or the locking body 321 and rotates synchronously. The radial length of the contact part 328 along the first locking member 320 is greater than the distance between the rotating part and the first micro switch 360.

[0064] The abutment portion 324 includes a first arc segment 3241 that is concave toward the locking portion 325 and a contact segment 3242 that extends outward from the first arc segment 3241. The surface shape of the contact segment 3242 matches the end shape of the free end 456 of the push-pull rod 450 so that the two are stably abutted. The first arc segment 3241 is connected to the locking body 321 and smoothly transitions to the contact segment 3242.

[0065] The locking portion 325 includes a second arc segment 3251 that is concave toward the abutting portion 324 and a second locking segment 3252 that abuts against the locking groove 455 of the push-pull rod 450. The second arc segment 3251 is connected to the locking body 321 and smoothly transitions with the locking segment 3252 to prevent jamming with the locking groove 455 during rotation.

[0066] The first elastic member 340 is a torsion spring, including an integrated elastic body, a free end 456 and a fixed end (not shown in the figure). In order to install the first elastic member 340, the first locking member 320 is provided with an intercommunication mounting groove 326 and a foot groove 327, the mounting groove 326 is arranged in the locking body 321 and is arranged around the outer periphery of the rotating connecting portion 323, and the foot groove 327 is arranged in the locking portion 325. The elastic body is installed in the mounting groove 326, the free end 456 is installed in the foot groove 327, and the fixed end is in contact with the mounting shell 310, so that the first locking member 320 can be rotated to the original position by the elastic force of the first elastic member 340 after rotation. It can be understood that in some other embodiments, the first elastic member 340 can be other forms of elastic members, as long as it can realize the reset of the first locking member 320 after rotation, such as a spring, and then a corresponding mounting structure is arranged on the first locking member 320.

[0067] like Figure 6 and Figure 7 As shown, the second locking member 330 includes a locking head 331 and a mounting section 332. The end of the mounting section 332 close to the first locking member 320 is connected to the locking head 331, and the end of the mounting section 332 away from the first locking member 320 is connected to the second elastic member 350, and the locking head 331 abuts against the first locking member 320. Preferably, in another embodiment, an installation space is provided inside the mounting section 332, and the second elastic member 350 can be provided in the internal space of the mounting section 332. The first end of the second elastic member 350 abuts against the inner bottom of the mounting section 332, and the second end of the second elastic member 350 abuts against the locking head 331. The locking head 331 and the mounting section 332 are slidably connected, and the locking head 331 is always partially located inside the mounting section 332.

[0068] The automatic door opening and closing method of the dishwasher with automatic door opening and closing of the utility model is as follows:

[0069] When the door is opened in the closed state, the driving motor 410 is automatically started to drive the driving gear 420 to rotate, and the driving gear 420 drives the driven gear 430 to rotate, thereby driving the swing rod 440 to swing, and the total length of the axial projection of the swing rod 440 and the driven gear 430 along the push-pull rod 450 changes from short to long, and at the same time drives the push-pull rod 450 to push the first locking member 320 to rotate, and the locking portion 325 gradually exits the locking groove 455 of the push-pull rod 450 by rotation. After the locking portion 325 completely exits the locking groove 455, that is, the second locking member 330 abuts at the door opening point 3221, the second microswitch 470 abuts and communicates with the door opening card point 453, and the axial direction of the swing rod 440 is parallel to the axial direction of the push-pull rod 450 and the total length of the axial projection of the swing rod 440 and the driven gear 430 along the push-pull rod 450 is the longest, the door lock 300 is opened, that is, Figure 4 and Figure 7 The unlocking state is also the door opening state.

[0070] The subsequent drive motor 410 stops. If the door needs to be opened further, the door can be pulled outward by external force, and the door body 200 continues to open. The first locking member 320 gradually moves away from the push-pull rod 450 until the push-pull rod 450 is completely separated from the door body 200. Figure 2 One of the door opening positions shown.

[0071] When closing the door in the open state, the door body 200 is pushed inward by an external force. First, the abutting portion 324 of the first locking member 320 abuts against the push-pull rod 450 and pushes the push-pull rod 450 to move toward the driven gear 430 . During this process, the total length of the axial projection of the swing rod 440 and the driven gear 430 along the push-pull rod 450 changes from long to short. During this period, the reaction force causes the first locking member 320 to rotate, and then the locking portion 325 gradually enters the locking groove 455. When the first locking member 320 rotates to the door closing point 3222 and abuts against the second locking member 330, the third microswitch 480 abuts against and connects with the door closing point 454, and the axial direction of the swing rod 440 is parallel to the axial direction of the push-pull rod 450 and the total length of the axial projection of the swing rod 440 and the driven gear 430 along the push-pull rod 450 is the shortest, complete locking is achieved, and the first locking member 320 is prevented from reversing under the abutment of the second locking member 330, that is, Figure 1 , Figure 3 and Figure 6 The locked state is also the closed state.

[0072] The utility model of the automatic door opening and closing dishwasher automatically opens the door to release water vapor when it needs to open the door, and needs to close the door to keep warm and dry with hot air after releasing to a certain extent. The door can be opened at the right time and closed at the right time, so that the drying effect is the best. The timing of opening and closing the door can be controlled by a program to automatically open and close the door to achieve better drying effect and energy saving effect. As shown in the following table, the data of testing 4 to 6 sets of dishwashers are as follows. After the dishwasher finishes washing dishes, the door is not opened for hot air drying for 30 minutes. According to the GB / T 20290-2016 standard, the dryness is ≤70.7%. After washing dishes, the door is opened for 15 to 20 minutes to dissipate the internal water vapor. According to the GB / T 20290-2016 standard, the dryness is ≥76.1%. Obviously, after washing dishes, the drying effect is better after opening the door to dissipate the internal water vapor and then drying. The specific comparative data of the timing of opening and closing the door and blowing hot air drying are shown in Table 1 below:

[0073] Table 1-Drying effect comparison test

[0074]

[0075] Table 2 shows the evaluation criteria for the fifth group of drying data in Table 1. It can be seen that after washing the dishes, the door was opened for hot air drying for 15 minutes, and then the door was closed for hot air drying for 40 minutes. Most of the tableware had no streaks, water droplets, water marks, etc. Calculated according to GB / T20290-2016 standard, the dryness was >98.9%, and the drying effect was excellent.

[0076] Table 2- Drying test evaluation criteria

[0077]

[0078] By implementing the utility model, the following beneficial effects are achieved:

[0079] When the dishwasher with automatic door opening and closing of the utility model is closed, the locking assembly approaches and clamps the locking groove 455 of the push-pull rod 450 to lock it to prevent it from springing open, so as to close and lock the door, thereby preventing the water inside from spraying out when washing dishes. When opening the door, without manual operation, the driving motor 410 is automatically started to drive the driving gear 420 to rotate, and the driving gear 420 drives the driven gear 430 to rotate, thereby driving the swing rod 440 to swing, and finally drives the push-pull rod 450 to push the locking assembly, so that the locking assembly releases the locking groove 455 to unlock and open the door. It can automatically release the water vapor inside the dishwasher, dissipate the moisture in time, and improve the dryness of the dishes.

[0080] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A dishwasher with an automatically opened and closed door, comprising a door body (200) and a dishwasher body (100) provided with an opening, wherein the door body (200) is arranged corresponding to the opening and is rotatably connected to the dishwasher body (100); characterized in that: The dishwasher further comprises a door lock (300) and an automatic door opening and closing structure (400), wherein the automatic door opening and closing structure (400) is installed on the dishwasher body (100), and the door lock (300) is installed inside the door body (200); The automatic door opening and closing structure (400) comprises a driving motor (410), a driving gear (420), a driven gear (430), a swing rod (440) and a push-pull rod (450) provided with a locking groove (455); the driving motor (410) is fixedly installed in the dishwasher body (100); the driving gear (420) is fixedly connected to the rotating shaft of the driving motor (410); the driving gear (420) is meshed with the driven gear (430) to drive the driven gear (430) to rotate; and the swing rod (440) is rotationally connected to the driven gear (430) and the push-pull rod (450) respectively; The door lock (300) comprises a locking assembly and an elastic assembly, wherein the locking assembly is mounted on the door body (200), and the elastic assembly is connected to the locking assembly and enables the locking assembly to be reset after being moved; The dishwasher includes a door-closed state and a door-open state: In the door-closing state: the axial direction of the swing rod (440) is parallel to the axial direction of the push-pull rod (450), and the total length of the axial projection of the swing rod (440) and the driven gear (430) along the push-pull rod (450) is the shortest; at the same time, the locking assembly abuts against the push-pull rod (450) and is locked with the locking groove (455); In the door-opening state, the axial direction of the swing rod (440) is parallel to the axial direction of the push-pull rod (450) and the total axial projection length of the swing rod (440) and the driven gear (430) along the push-pull rod (450) is the longest; at the same time, the locking assembly completely withdraws from the locking groove (455).

2. The dishwasher with automatic door opening and closing according to claim 1, characterized in that: The locking assembly comprises a first locking member (320) and a second locking member (330), and the elastic assembly comprises a first elastic member (340) and a second elastic member (350); The first locking member (320) is rotatably mounted in the door body (200), and the first elastic member (340) is connected to the first locking member (320) and enables the first locking member (320) to return to its original position after rotation; The second locking member (330) is slidably installed in the door body (200) along the radial direction of the first locking member (320) and abuts against the first locking member (320); the first end of the second elastic member (350) is connected to or abuts against the door body (200); the second end of the second elastic member (350) is connected to or abuts against the second locking member (330) and provides elastic force for the second locking member (330); The first locking member (320) is provided with a protrusion (322) near the second locking member (330), and two sides of the protrusion (322) are respectively an unlocking point and a locking point; In the door closing state: the first locking member (320) abuts against the end of the push-pull rod (450) and is locked with the locking groove (455), and the second locking member (330) abuts against the locking point; In the door-opening state: the first locking member (320) completely withdraws from the locking groove (455), and the second locking member (330) abuts against the unlocking point.

3. The dishwasher with automatic door opening and closing according to claim 2, characterized in that: The first locking member (320) comprises a locking body (321), a protrusion (322), a rotating connection portion (323), an abutting portion (324) for the push-pull rod (450) to abut, and a locking portion (325) for connecting to the locking groove (455); the protrusion (322), the abutting portion (324) and the locking portion (325) are respectively arranged at intervals on the outer periphery of the locking body (321); the rotating connection portion (323) penetrates the locking body (321) and is fixedly connected, and the rotating connection portion (323) is rotatably connected to the door body (200); The first elastic member (340) is connected to the locking body (321) and enables the locking body (321) to return to its original position after rotation.

4. The dishwasher with automatic door opening and closing according to claim 2, characterized in that: The second locking member (330) comprises a locking head (331) and a mounting section (332); an end of the mounting section (332) close to the first locking member (320) is connected to the locking head (331), and an end of the mounting section (332) away from the first locking member (320) is connected to the second elastic member (350); the locking head (331) is in abutment with the first locking member (320).

5. The dishwasher with automatic door opening and closing according to claim 3, characterized in that: The first locking member (320) further comprises a contact portion (328), wherein the contact portion (328) is disposed outside the rotating connection portion (323) or the locking body (321) and rotates synchronously; The door lock (300) further comprises a first micro switch (360), wherein the first micro switch (360) is installed in the door body (200) and is in communication with the contact portion (328) when in contact with the first micro switch (360); The length of the contact portion (328) along the radial direction of the first locking member (320) is greater than the distance between the rotating connection portion (323) and the first micro switch (360).

6. The dishwasher with automatic door opening and closing according to claim 1, characterized in that: The driven gear (430) comprises a gear body (431), a positioning shaft (433) and driven gear teeth (434) arranged on the outer periphery of the gear body (431); the gear body (431) is rotatably sleeved on the positioning shaft (433); and the positioning shaft (433) is fixedly connected to the dishwasher body (100); The driven gear (430) further comprises a first connection portion disposed close to the driven gear teeth (434); the first connection portion is disposed on the gear body (431) and is rotationally connected to the swing rod (440).

7. The dishwasher with automatic door opening and closing according to claim 1, characterized in that: The push-pull rod (450) comprises a rod body (451) and a second connecting portion, wherein the second connecting portion is arranged on the rod body (451) and is rotationally connected to the swing rod (440).

8. The dishwasher with automatic door opening and closing according to claim 7, characterized in that: The push-pull rod (450) further comprises a door opening card point (453) and a door closing card point (454), wherein the door opening card point (453) and the door closing card point (454) are arranged on the rod body (451) at intervals along the first direction; The automatic door opening and closing structure (400) further comprises a second micro switch (470) and a third micro switch (480); the second micro switch (470) is fixedly mounted in the dishwasher body (100) and is connected when it abuts against the door opening card point (453); the third micro switch (480) is fixedly mounted in the dishwasher body (100) and is connected when it abuts against the door closing card point (454); The first direction is the axial direction of the rod body (451).

9. The dishwasher with automatic door opening and closing according to claim 8, characterized in that: The automatic door opening and closing structure (400) further comprises a housing (460) for mounting the driving motor (410), the driving gear (420), the driven gear (430), the swing rod (440), the push-pull rod (450), the second micro switch (470) and the third micro switch (480); the housing (460) is provided with a moving channel along the first direction for the swing rod (440) to telescopically move along the first direction.

10. The dishwasher with automatic door opening and closing according to any one of claims 1 to 9, characterized in that: The reduction ratio between the driving gear (420) and the driven gear (430) is greater than or equal to 2:1.

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