Door locks and dishwashers

Abstract

A door lock and dishwasher. The door lock includes a lock tongue, a lock cylinder, a lock bolt, a restraining mechanism, and a first drive member. The lock cylinder is used to lock or unlock the lock tongue. The restraining mechanism has a first restraining position and a second restraining position. When the lock bolt is in the first restraining position, it restricts the movement of the lock tongue or the lock cylinder, and when the lock bolt is in the second restraining position, it does not restrict the movement of the lock tongue or the lock cylinder. The first drive member is used to drive the lock bolt to move from the first restraining position to reach the second restraining position, or to move from the second restraining position to reach the first restraining position.

Description

[Technical Field]

[0001] This application relates to the field of door lock technology, and more particularly to door locks and dishwashers. [Background technology]

[0002] The washing cycle of a dishwasher includes pre-wash, rinsing, drying, etc. The rinsing process is a high-temperature washing stage, where temperatures can reach 80°C, allowing even difficult-to-clean residues such as grease to be thoroughly removed. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application solves at least some of the technical problems in the related art by providing a door lock that can prevent a user from accidentally opening the lock. [Means for solving the problem]

[0004] In order to achieve the above object, the present application discloses a door lock, the door lock comprising: Lock tongue and a lock cylinder for locking or unlocking the lock tongue; Rock bolts and a restraint mechanism having a first restraint position and a second restraint position, wherein when the lock bolt is in the first restraint position, the lock bolt restricts movement of the lock tongue or the lock cylinder, and when the lock bolt is in the second restraint position, the lock bolt does not restrict movement of the lock tongue or the lock cylinder; a first drive member for driving the lock bolt to move away from the first restraining position so that the lock bolt reaches the second restraining position, or for driving the lock bolt to move away from the second restraining position so that the lock bolt reaches the first restraining position.

[0005] The present application further discloses a dishwasher, comprising a body, a door body, and the above-mentioned door lock, wherein one of the lock tongue and the lock cylinder is provided on the door body, and the other is provided on the body.

[0006] In order to more clearly describe the technical solutions of the embodiments of the present application or the prior art, the drawings that need to be used to describe the embodiments or the prior art will be briefly described below. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can further obtain other drawings based on these drawings without any creative work. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram illustrating a lock tongue and lock cylinder of a door lock in a locked state in some embodiments. [Figure 2] FIG. 2 is an enlarged view of the dashed line in FIG. [Figure 3] 1 is a schematic diagram showing a lock tongue and lock cylinder of a door lock in a separated state in some embodiments. [Figure 4] 1 is a schematic diagram illustrating a state in which a lock bolt of a door lock moves from a first restraining position to a second restraining position in some embodiments. [Figure 5] FIG. 5 is an enlarged view of the dashed line in FIG. [Figure 6] This is an enlarged view of the broken line in FIG. 4 (the broken line with an arrow indicates the movement path of the stopper lever). [Figure 7] 10 is a schematic diagram illustrating a state in which a lock bolt of a door lock moves from a second restraining position to a first restraining position in some embodiments. [Figure 8] This is an enlarged view of the broken line in FIG. 7. [Figure 9] This is an enlarged view of the broken line in FIG. 7 (the broken line with an arrow indicates the movement path of the stopper lever). [Figure 10] FIG. 10 is a schematic diagram of a door lock with a lock bolt in a locked state in some embodiments. [Figure 11]FIG. 1 is an exploded view of a door lock according to some embodiments. [Figure 12] This is an enlarged view of the broken line in FIG. [Figure 13] 1 is a structural schematic diagram of a first drive member and a lock bolt according to some embodiments. [Figure 14] FIG. 10 is a schematic diagram of a door lock with a lock bolt in a locked state in some embodiments. [Figure 15] This is an enlarged view of the broken line in FIG. [Figure 16] 1 is a structural schematic diagram of a stopper lever of a door lock in some embodiments. [Figure 17] 1 is a schematic diagram of a separation structure of a lock tongue and a lock cylinder of a door lock in some embodiments. [Figure 18] 1 is a schematic diagram of a lock tongue and a lock cylinder of a door lock according to some embodiments; FIG. [Figure 19] 1 is a structural schematic diagram of a locking member of a door lock in a locked state according to some embodiments; [Figure 20] FIG. 1 is an exploded view of a door lock structure according to some embodiments. [Figure 21] 1 is a schematic diagram of a separation structure of a lock tongue and a lock cylinder of a door lock in some embodiments. [Figure 22] 1 is a schematic diagram of a lock tongue and a lock cylinder of a door lock according to some embodiments; FIG. [Figure 23] 1 is a structural schematic diagram of a locking member of a door lock in a locked state according to some embodiments; [Figure 24] 10A and 10B are schematic diagrams illustrating the operation of a second drive member of a door lock according to some embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0008] The realization of the object, the functional features and advantages of the present application will be further explained through examples and with reference to the drawings.

[0009] The following clearly and completely describes the technical solutions in the embodiments of the present application in combination with the drawings in the embodiments of the present application, and it is obvious that the described embodiments do not include all the embodiments but only some of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0010] It is important to note that all directional indications (e.g., up, down, left, right, front, back, etc.) in the embodiments of the present application are used to describe the relative positional relationships, movement situations, etc. between each component in a specific posture (as shown), and when this specific posture changes, the directional indications also change accordingly.

[0011] In this application, terms such as "connected," "fixed," and the like should be understood in a broad sense unless otherwise clearly defined and limited. For example, unless otherwise clearly defined, they may mean fixedly connected, detachably connected, or integrated, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. A person skilled in the art can understand the specific meaning of the above terms in this application depending on the context.

[0012] Furthermore, the terms "first" and "second" in this application are used for descriptive purposes only and cannot be understood as expressing or implying the relative importance or the number of technical features shown. Therefore, features defined by "first" and "second" may explicitly or implicitly include at least one of the features. Furthermore, the technical solutions in each embodiment may be combined with each other, but this must be based on what a person skilled in the art can achieve. If the combination of technical solutions contradicts each other or is not feasible, it should be considered that such combination of technical solutions does not exist and is outside the scope of protection claimed by this application.

[0013] Some home appliances, such as dishwashers, washing machines, microwave ovens, and ovens, have door locks, which are used to lock or unlock the door. Taking a dishwasher as an example, a dishwasher is an appliance that can automatically wash dishes. Generally, a dishwasher comprises a machine body and a door. The machine body has a wash chamber, a bowl basket is provided in the wash chamber, dishes are placed in the bowl basket, and the bowl basket can be pulled or pushed into the wash chamber, and the door can close the wash chamber. When the door closes the wash chamber, the door is locked to the machine by the door lock, allowing the corresponding washing or drying process to occur in the wash chamber. When the door needs to be opened, a user pulls the door, which disengages from the door lock, opening the wash chamber. In other words, such a door lock is a device that can be both locked and unlocked under the action of an external force. As a result, when a dishwasher performs high-temperature operations, if a user, especially a child, accidentally opens the door, there is a risk of high-temperature burns. For this reason, the present application provides a door lock that can lock the door and prevent or block a user from accidentally unlocking it.

[0014] In this application, the door lock will be described using a dishwasher as an example, so that it can be understood that the door lock in this application can be used for other home appliances or devices that require several door locks to lock the door body, such as the washing machine, microwave oven, etc. mentioned above.

[0015] As shown in FIG. 1 , the door lock includes a lock tongue 100, a lock cylinder 200, a lock bolt 310, a restraining mechanism 400, and a first drive member 500. In some embodiments, the lock tongue 100 can be mounted on a door body and the lock cylinder 200 can be mounted on the body. In other embodiments, the lock tongue 100 can be mounted on the body and the lock cylinder 200 can be mounted on the door body. The lock tongue 100 and the lock cylinder 200 can be arranged according to actual needs. The lock tongue 100 and the lock cylinder 200 are structured to mate with each other to achieve locking or unlocking, and they can be separated or closed under the action of force. For example, when a user pulls the door body to open, the lock tongue 100 separates from the lock cylinder 200. When the user pushes the door body to close, the lock tongue 100 and the lock cylinder 200 are locked. The specific shapes of the lock tongue 100 and the lock cylinder 200 can be selected according to actual circumstances. In this embodiment, an example in which the lock tongue 100 is provided on the door body and the lock cylinder 200 is provided on the machine body will be described.

[0016] Typically, the lock tongue 100 is made of a metal material, such as a single piece cast from iron or aluminum, and has high strength. The door body generally has an inner door body and an outer door body, with an attachment point at the top of the inner door body, and the lock tongue 100 is fixed to the attachment point at the top of the door body with a screw fastener. Alternatively, the lock tongue 100 may be press-molded at the top of the door body. The lock tongue 100 is movable with the movement of the door body. When the door body needs to be closed, the lock tongue 100 follows the door body and is inserted into the lock cylinder 200 and locked by the lock cylinder 200. When the door body is opened, the lock tongue 100 follows the door body and disengages from the lock cylinder 200. As can be understood, when the lock tongue 100 is inserted into the lock cylinder 200, if the lock cylinder 200 wants to complete the locking of the lock tongue 100, the lock cylinder 200 must make a corresponding movement to lock the lock tongue 100; the same is true when the lock tongue 100 is removed from the lock cylinder 200, if the lock cylinder 200 does not make a corresponding movement, the lock tongue 100 cannot be released; that is, the lock cylinder 200 moves when locking or releasing the lock tongue 100.

[0017] Therefore, a user can open or close the door by pulling or pushing it, but if the door is accidentally opened while the dishwasher is running, a corresponding danger will occur. Therefore, by providing lock bolt 310, lock bolt 310 can automatically limit the movement of lock tongue 100 or lock cylinder 200 when the dishwasher reaches a certain operating condition, preventing separation of lock tongue 100 and lock cylinder 200.

[0018] Specifically, when the dishwasher receives a signal indicating that the lock cylinder 200 or the lock tongue 100 needs to be restricted, the first driving member 500 drives the operation of the lock bolt 310 to restrict the movement of the lock tongue 100 or the lock cylinder 200. As a result, the lock tongue 100 cannot open as the door body is opened, i.e., the lock tongue 100 and the lock cylinder 200 cannot separate, and the door body remains closed. The restriction here refers to a significant obstacle imposed on the lock tongue 100 or the lock cylinder 200, which prevents the lock cylinder 200 and the lock tongue 100 from separating from each other when the door body is forcibly opened, or greatly increases the resistance when the door body is opened, letting the user know that the door body cannot be opened at this time. This prevents the lock tongue 100 and the lock cylinder 200 from separating and opening the door body. Because the specific structures of different lock tongues 100 and lock cylinders 200 are different, there are various methods for locking or unlocking the lock tongues 100 and lock cylinders 200. However, the lock tongues 100 must move in accordance with the door body, and the lock bolt 310 only needs to regulate the movement of the lock tongues 100 in accordance with the door body.

[0019] A restraining mechanism 400 is provided, which has two restraining positions, a first restraining position and a second restraining position, and the lock bolt 310 may be in either the first restraining position or the second restraining position. When the lock bolt 310 is in the first restraining position, the lock bolt 310 is restrained in the first restraining position and becomes inoperable, and at this time, the lock bolt 310 is restricted relative to the lock tongue 100 or the lock cylinder 200. When the lock bolt 310 is in the second restraining position, the lock bolt 310 is restrained in the second restraining position and becomes inoperable, and at this time, the lock bolt 310 is not restricted relative to the lock tongue 100 or the lock cylinder 200. This is because the first driving member 500 only needs to drive the lock bolt 310 so that it reaches the first restraining position or the second restraining position, and then the first driving member 500 can be turned off and reset. At this time, the lock bolt 310 will not move under the action of the restraining mechanism 400, so the first driving member 500 does not need to be powered on for a long time, which saves power and reduces the amount of heat generated by the first driving member 500, thereby improving safety.

[0020] As can be understood, the first driving member 500 mentioned above may drive the lock bolt 310 to move away from the first restraining position, so that the lock bolt 310 reaches the second restraining position, in multiple cases, i.e., the first driving member 500 drives the lock bolt 310 to move away from the first restraining position, and then the lock bolt 310 reaches the second restraining position under the action of other members, and the first driving member 500 drives the lock bolt 310 to move from the first restraining position to the second restraining position.

[0021] Similarly, there are multiple cases where the first driving member 500 mentioned above drives the lock bolt 310 to move away from the second restraining position so that the lock bolt 310 reaches the first restraining position, that is, after the first driving member 500 drives the lock bolt 310 to move away from the second restraining position, the lock bolt 310 reaches the first restraining position under the action of other members, and the first driving member 500 drives the lock bolt 310 to move from the second restraining position to the first restraining position.

[0022] Furthermore, as shown in FIG. 1, a microswitch 340 is provided in the movement path of the lock bolt 310. When the lock bolt 310 moves away from the second locking position and reaches the first locking position, the lock bolt 310 can touch the microswitch 340, which generates a signal to indicate a locked state to the dishwasher. When the lock bolt 310 moves away from the first locking position and reaches the second locking position, the lock bolt 310 separates from the microswitch 340, which cuts off the signal from the microswitch 340, indicating an unlocked state to the dishwasher.

[0023] As can be seen from the above, the lock tongue 100 and the lock cylinder 200 form a locking structure that allows the door to be opened and closed normally. When the lock bolt 310 is locked, it is equivalent to adding a mechanical protection device to the locking structure consisting of the lock tongue 100 and the lock cylinder 200. The locking bolt 310 restrains the lock tongue 100 or the lock cylinder 200, effectively preventing the door from being forcibly opened or significantly increasing the resistance to opening the door, thereby avoiding danger. For example, when a dishwasher is in the high-temperature rinse cycle, the spray arms in the wash chamber of the dishwasher spray a rotating stream of high-temperature, high-pressure water. If the door is forcibly opened, the high-temperature, high-pressure water is likely to be sprayed outside the dishwasher, causing injury to the user. However, the action of the lock bolt 310 effectively prevents this from occurring.

[0024] As shown in FIGS. 1, 2, and 3, in some embodiments of the present application, when the lock bolt 310 is in the second restraining position, i.e., when the lock bolt 310 does not restrict the lock tongue 100 or the lock cylinder 200, the lock bolt 310 tends to move from the second restraining position to the first restraining position. This tendency occurs when the lock bolt 310 receives a driving force, which can drive the lock bolt 310 to move, but the lock bolt 310 is currently blocked and unable to move. The lock bolt 310 tends to move toward the first restraining position, i.e., when the lock bolt 310 is in the second restraining position, it tends to move toward a position that restricts the lock tongue 100 or the lock cylinder 200. In this way, after the lock bolt 310 disengages from the second restraining position, it can reach the first restraining position under the action of this driving force, achieving rapid locking and improving the locking efficiency of the lock bolt 310. This tendency to move can be achieved in various ways, for example, by causing the rock bolt 310 to fall downwards due to gravity, or by magnetizing the rock bolt 310 and providing a magnet or an electric magnet to attract the rock bolt 310, thereby causing the rock bolt 310 to move.

[0025] As can be understood, after the first driving member 500 drives the lock bolt 310 to move out of the second restraining position, the lock bolt 310 can move not only under the action of the movement tendency, but also under the action of the first driving member 500, that is, the driving force of the movement tendency and the driving force of the first driving member 500 are overlapped in the lock bolt 310, so that the lock bolt 310 moves quickly. However, in some embodiments of the present application, the overlapping of the driving force of the first driving member 500 is not used, and specifically, the first driving member 500 operates to drive the lock bolt 310 to move out of the second restraining position, and during this process, the first driving member 500 is powered off and reset, and the lock bolt 310 smoothly reaches the first restraining position under the action of the movement tendency mentioned above. That is, the role of the first driving member 500 is to move the lock bolt 310 away from the second locking position, and the first driving member 500 can be reset by cutting off the power supply. In this way, the first driving member 500 does not need to operate the lock bolt 310 for a long time. As shown in Figures 8 and 9, under the action of the locking mechanism 400, the first driving member 500 drives the lock bolt 310 to move to the maximum position to the left to move away from the second locking position, and then the first driving member 500 can be reset. Under the action of the driving force that generates the movement tendency, the lock bolt 310 will move to the right to the first locking position, thereby avoiding the first driving member 500 being energized for a long time.

[0026] The same applies to the case where the lock bolt 310 is released from the first restraining position. As shown in Figures 4, 5, and 6, in some embodiments of the present application, the first driving member 500 operates to drive the lock bolt 310 to release it from the first restraining position. During this process, the first driving member 500 is powered off and reset, and the lock bolt 310 smoothly reaches the second restraining position under the action of the above-mentioned movement tendency. Under the action of the restraining mechanism 400, the first driving member 500 drives the lock bolt 310 to move to the left to a maximum position (which may be the same as or different from the above maximum position), and the first driving member 500 can be powered off and reset, and the lock bolt 310 moves to the right to the second restraining position under the action of the driving force that generates the movement tendency, thereby avoiding long-term power supply to the first driving member 500.

[0027] As shown in FIGS. 1 to 9 , in some embodiments of the present application, the lock bolt 310 is provided with an elastic member 320, and when the lock bolt 310 is in the second restraining position of the restraining mechanism 400, the elastic member 320 can apply a force to the lock bolt 310, so that the lock bolt 310 has a tendency to move from the second restraining position to the first restraining position; The role of the first driving member 500 is to drive the lock bolt 310 to move out of the second restraint position, and the lock bolt 310 reaches the first restraint position under the action of the elastic member 320, or to drive the lock bolt 310 to move out of the first restraint position, and the lock bolt 310 reaches the second restraint position under the action of the elastic member 320.

[0028] Specifically, in this embodiment, the movement tendency of the lock bolt 310 comes from the elastic member 320, which may be a pull rope, a pull spring, etc., and the driving force is generated by the elastic member 320, simplifying the structure by which the lock bolt 310 realizes its movement tendency, and the movement tendency of the lock bolt 310 is achieved solely by mechanical structure, avoiding the use of electronic components.

[0029] When it is necessary to lock the lock bolt 310, the first drive member 500 operates on the lock bolt 310, and after the lock bolt 310 disengages from the second restraining position, the first drive member 500 can reset, the first drive member 500 does not obstruct the lock bolt 310, and the elastic member 320 subsequently extends, thereby moving the lock bolt 310 to the first restraining position. When it is necessary to unlock the lock bolt 310, the first drive member 500 operates the lock bolt 310, and the lock bolt 310 disengages from the first restraining position and moves to the left, the first drive member 500 resets, and the elastic member 320 subsequently extends, thereby moving the lock bolt 310 to the second restraining position.

[0030] 1 to 9, the elastic member 320 exerts a thrust on the lock bolt 310 in the second restraining position when compressed. The thrust is generated by compressing the elastic member 320, which causes the lock bolt 310 to have a tendency to move. That is, the movement directions of the elastic member 320 and the lock bolt 310 are the same. When the elastic member 320 is compressed to the left, the lock bolt 310 moves to the left, and when the elastic member 320 is compressed to the right, the lock bolt moves to the right. Therefore, the elastic member 320 and the lock tongue 100, or the elastic member 320 and the lock cylinder 200, can be distributed on both sides of the lock bolt 310, which is convenient for component arrangement and makes the entire door lock thinner. Although it is possible to pull the elastic member 320 to generate a tensile force on the lock bolt 310, causing the lock bolt 310 to tend to move, the elastic member 320 must be located on the same side of the lock tongue 100 or lock cylinder 200 and the lock bolt 310, and in order to avoid interference between the elastic member 320 and the movement of the lock tongue 100 or lock cylinder 200, the elastic member 320 and the lock cylinder 200 or lock tongue 100 must be distributed on different movement planes. This would increase the thickness of the door lock or require the addition of an additional transmission mechanism, making the entire door lock more complicated.

[0031] 1 , in some embodiments of the present application, the direction of insertion and removal of the lock tongue 100 from the lock cylinder 200 is defined as a first direction (front-to-back in the figure), and the direction perpendicular to the first direction is defined as a second direction (left-to-right in the figure), with the lock bolt 310 and the elastic member 320 sequentially disposed on one side of the lock tongue 100 in the second direction. Specifically, one end of the elastic member 320 is connected to one end of the lock bolt 310. Specific connection methods include adhesive fixation, welding fixation, or a method in which a connecting post is provided on one end of the lock bolt 310 and one end of the elastic member 320 is fitted into the connecting post. In this manner, the connection between the elastic member 320 and the lock bolt 310 can be realized. The other end of the elastic member 320 is fixed, and as will be described below, the other end of the elastic member 320 is fixed to the lower case 620, which is provided with a corresponding connecting post and fitted into the connecting post of the lower case 620. In this way, the elastic member 320 can directly drive the movement of the lock bolt 310, and the movement of the lock bolt 310 can be achieved without the use of an intermediate member. If the lock bolt 310 is made thinner, it is lighter in weight and does not affect the lock tongue 100 and the lock cylinder 200.

[0032] In order to make it easier to restrict the lock bolt to the first restraining position or the second restraining position, in some embodiments of the present application, as shown in FIGS. 4 to 9 , the lock bolt 310 is provided with a stopper lever 330 that is movable relative to the lock bolt 310, and the lock bolt 310 can be restrained to the second restraining position or the first restraining position by the stopper lever 330. The restraint mechanism 400 is provided with a first path 450 and a second path 460, the first path 450 and the second path 460 forming a loop, and the stopper lever 330 can move from the second restraint position along the first path 450 to the first restraint position, or from the first restraint position along the second path 460 to the second restraint position.

[0033] Specifically, the stopper lever 330 is a component that can restrain the lock bolt 310 in a first restraining position or a second restraining position. By installing the stopper lever 330, even if the lock bolt 310 has a tendency to move, it can be restrained by the first restraining position or the second restraining position and held so as not to move. In other words, the structural form of the stopper lever 330 can be various and is not limited to the above as long as it can achieve the restraint of the lock bolt 310. For example, as shown in FIGS. 1 and 16 , the stopper lever 330 includes a rod 331, which is higher than a first stopper 410 and a second stopper 420 of a restraining mechanism 400 described below. A first bent body 332 is bent along a first end of the rod 331, and a second bent body 333 is bent along a second end of the rod 331. The second bent body 333 and the first bent body 332 are opposite to each other in the bending direction of the rod 331. The first bent body 332 moves and connects to the lock bolt 310 through the through hole 314, and the second bent body 333 moves and connects to the restraining mechanism 400. That is, the second bent body 333 is movable between a first restraining position and a second restraining position via a first path 450 or a second path 460.

[0034] The stopper lever 330 is movably mounted relative to the lock bolt 310, allowing the stopper lever 330 to flexibly change position following the movement of the lock bolt 310, thereby realizing movement between the first and second restraint positions. As shown in the figure, a through hole 314 is provided in the lock bolt 310, one end of the stopper lever 330 is inserted into the through hole and is rotatable, and the other end of the stopper lever 330 moves along a first path 450 and a second path 460 between the first and second restraint positions, and as the stopper lever 330 moves, the stopper lever 330 can rotate around the through hole 314 correspondingly. By providing the first path 450 and the second path 460, when the stopper lever 330 moves, the first path 450 and the second path 460 are equivalent to forming a certain constraint on the stopper lever 330, making the movement of the stopper lever 330 more reliable and ensuring that the stopper lever 330 moves smoothly between the first and second restraining positions. In addition, since the first path 450 and the second path 460 form a loop, the structure of the restraining mechanism 400 is simplified to the greatest extent possible.

[0035] Furthermore, in some embodiments of the present application, as shown in FIGS. 5, 6, 8, 9, 11 and 12, the restraining mechanism 400 may include: a first stopper 410 provided with a first notch 411 that constitutes the second restraining position; a second stopper (420) that is provided at an interval from the first stopper (410) and that forms a first through-hole (421) and a second through-hole (422) that communicate with the first notch (411); a first guide groove 430 provided on one side of the first stopper 410 and communicating with the first through-hole 421; a second guide groove (440) that is provided on the other side of the first stopper (410), communicates with the second through-hole (422), communicates with the first guide groove (430), forms a first restraining position at a communicating portion with the first guide groove (430), and is provided around the first stopper (410) together with the first guide groove (430); The first through hole 421 and the first guide groove 430 form a first path 450 , and the second guide groove 440 and the second through hole 422 form a second path 460 .

[0036] Specifically, the restraint mechanism 400 is integrally molded with the lower case 620, which will be described below, and the first stopper 410 has a V-shaped or U-shaped structure, and the first notch 411, which is also formed in the V-shaped or U-shaped structure, constitutes the second restraint position, and the first notch 411 faces the left side as shown in the figure. When the dishwasher receives a signal to lock the lock bolt 310, the first driving member 500 drives the movement of the lock bolt 310, and the lock bolt 310 moves to the left from the first notch 411. In the process, the elastic member 320 is compressed, and the stopper lever 330 of the lock bolt 310 passes through the first through-hole 421 and slides into the first guide groove 430. Then, the first driving member 500 is reset, and under the action of the elastic member 320, the lock bolt 310 moves to the right until the stopper lever 330 moves to the first restraining position, at which time the lock bolt 310 locks the lock tongue 100 or the lock cylinder 200.

[0037] When the dishwasher receives a signal to unlock lock bolt 310, first driving member 500 operates lock bolt 310, causing lock bolt 310 to move to the left and escape from the first locking position. As lock bolt 310 moves, elastic member 320 is compressed. Then, first driving member 500 is reset, and under the action of elastic member 320, lock bolt 310 moves to the right, causing stopper lever 330 to pass through second through-hole 422 and move to first notch 411 (second locking position). At this time, lock bolt 310 does not restrict lock tongue 100 or lock cylinder 200. In the example of this application, upper case 610 and lower case 620, which will be described below, have restriction mechanism 400 directly molded into lower case 620, eliminating the need for additional restriction mechanism 400 and providing convenient restriction for lock bolt 310.

[0038] Furthermore, as shown in FIGS. 5 , 6 , 8 and 9 , in order to facilitate the stopper lever 330 to smoothly enter the first guide groove 430 when it is released from the second restraining position, in some embodiments, the first stopper 410 and the second stopper 420 are sequentially arranged in a direction from the first restraining position to the second restraining position (from right to left), the second stopper 420 is provided with a first guide surface 423, the first through hole 421 is formed between the first guide surface 423 and the first stopper 410, the first guide surface 423 is arranged in a direction of release from the first notch 411 of the stopper lever 330 (from right to left in the drawings), and in the process of the stopper lever 330 releasing from the first notch 411, the stopper lever 330 comes into contact with the first guide surface 423, passes through the first through hole 421 and slides into the first guide groove 430. Since the first path 450 and the second path 460 form a loop, in order to prevent the stopper lever 330 from entering the second guide groove 440 when it leaves the first notch 411, a first guide surface 423 is provided so that the stopper lever 330 can smoothly enter the first guide groove 430.

[0039] Furthermore, in order to prevent the stopper lever 330 from moving back into the second locking position through the first through hole 421 while moving toward the first locking position after escaping from the second locking position, in some embodiments of the present application, as shown in Figures 5, 6, 8 and 9, the first guide surface 423 protrudes toward the first guide groove 430 relative to the first stopper 410. As a result, the stopper lever 330 passes through the first through hole 421 and smoothly slides into the first guide groove 430, and then moves beyond the first through hole 421 following the movement of the lock bolt 310, and thereby moves along the first guide groove 430 to the first locking position.

[0040] Specifically, the first guide surface 423 is inclined and protrudes forward of the first stopper 410. In other words, the first stopper 410 and the second stopper 420 are not arranged on the same straight line along the path along which the stopper lever 330 moves toward the first restraining position in response to the lock bolt 310, and a certain positional deviation is formed. When the dishwasher receives a signal to lock the lock bolt 310, the first driving member 500 drives the movement of the lock bolt 310, and the lock bolt 310 moves leftward from the first notch 411. The elastic member 320 is compressed, and the stopper lever 330 penetrates the first through-hole 421 and slides into the first guide groove 430. Then, the first driving member 500 is reset, and the lock bolt 310 moves rightward under the action of the elastic member 320. The second stopper 420 forms a more protruding first guide surface 423, so that the stopper lever 330 follows the movement of the lock bolt 310 and passes over the first through-hole 421 until it reaches the first restraining position. At this time, the lock bolt 310 is in a state of locking the lock tongue 100 or the lock cylinder 200. In this embodiment, the first guide surface 423 is provided so that the stopper lever 330 does not re-enter the first notch 411 in the reverse direction while following the lock bolt 310 and moving to the first restraining position.

[0041] As shown in Figures 5, 6, 8 and 9, in some embodiments of the present application, in order to prevent the stopper lever 330 from moving in the reverse direction along the first path 450 during the process of moving from the first restraining position to the second restraining position, the first stopper 410 is provided with a second guide surface 412, which is in the direction in which the stopper lever 330 moves away from the first restraining position (from right to left in the figures), and during the process of the stopper lever 330 being driven to move away from the first restraining position, the stopper lever 330 comes into contact with the second guide surface 412 and moves along the second guide groove 440.

[0042] As can be understood, if the first restraining position and at least a portion of the second path 460 are aligned in the same straight line, the first stopper 410 does not need to have the second guide surface 412, and the stopper lever 330 can move along the second path 460 when it leaves the first restraining position.

[0043] Furthermore, as shown in Figures 5, 6, 8 and 9, a third guide surface 441 is provided in the second guide groove 440, and the first stopper 410 and the third guide surface 441 are sequentially provided in the direction from the first restraining position to the second restraining position (from right to left in the figures), and in the process of the stopper lever 330 moving away from the first restraining position, the stopper lever 330 comes into contact with the third guide surface 441, thereby following the lock bolt 310 and moving through the second through hole 422 to the second restraining position. Specifically, the first stopper 410 and the third guide surface 441 are not aligned in the same line along the path along which the stopper lever 330 moves to the second locking position following the lock bolt 310, but are offset from each other. Thus, when the dishwasher receives a signal to unlock, the first driving member 500 drives the lock bolt 310 to reset (move to the left), and the lock bolt 310 disengages the stopper lever 330 from the first locking position. The stopper lever 330 then moves along the second path 460, and when it reaches a predetermined position, the first driving member 500 is reset, and the lock bolt 310 is driven by the elastic member 320 to move to the right. Due to the provision of the third guide surface 441, the stopper lever 330 can smoothly move to the second locking position through the second through-hole 422, and will no longer move in the opposite direction along the second path 460.

[0044] As can be seen from the above, the present application provides a restraint mechanism 400 so that when it is necessary to lock the lock bolt 310, the first driving member 500 drives the lock bolt 310 to move to the left, causing the lock bolt 310 to disengage the stopper lever 330 from the first notch 411 and slide into the first guide groove 430 by touching the first guide surface 423, after which the first driving member 500 is reset and the lock bolt 310 moves beyond the first through-hole 421 under the action of the elastic member 320 to the first restraint position. When the lock bolt 310 needs to be unlocked, the first driving member 500 drives the lock bolt 310 to move to the left, causing the lock bolt 310 to release the stopper lever 330 from the first locking position, touch the second guide surface 412, move along the second guide groove 440, and during the movement, touch the third guide surface 441 and pass through the second through-hole 422. After that, the first driving member 500 is reset, and the lock bolt 310, under the action of the elastic member 320, causes the stopper lever 330 to reach the second locking position, i.e., the first notch 411, thus completing the locking and unlocking process.

[0045] 1, in some embodiments of the present application, the driving direction of the first driving member 500 (up and down in the drawing) and the moving direction of the lock bolt 310 (left and right in the drawing) intersect. That is, the movement of the lock bolt 310 is a linear reciprocating movement, and the drive of the first driving member 500 is also a linear reciprocating drive. By arranging the first driving member 500 and the lock bolt 310 in this way, space can be fully utilized, and the door lock will not be too long if the first driving member 500 and the lock bolt 310 are installed in the same direction, or will not be too thick if they are installed overlapping each other.

[0046] 1, 11 and 13, in some embodiments of the present application, the first driving member 500 includes a first driver 510 and a first push rod 520 provided at the driving end of the first driver 510, the first push rod 520 is provided with a first contact surface 521, the lock bolt 310 is provided with a second contact surface 313, and the first driver 510 drives the lock bolt 310 by abutting the first contact surface 521 against the second contact surface 313. Specifically, the first driver 510 is an element that performs a corresponding operation after being energized, and the first driver 510 can take various forms, such as a reciprocating first driver or a rotary first driver, as long as it can achieve reciprocating driving of the first push rod 520. In this embodiment, the reciprocating first driver 510 is taken as an example. The lock bolt 310 is attached to a slide rail of the lower case 620, which will be described below. The lock bolt 310 is reciprocatingly movable on the slide rail. The lock bolt 310 is provided with an insertion hole 315 into which a first push rod 520 can be inserted. The insertion hole 315 is provided with a second contact surface 313. When the lock bolt 310 is in the second locking position, the first driver 510 drives the first push rod 520. The first push rod 520 extends so that the front end of the first contact surface 521 contacts the front end of the second contact surface 313. As the first push rod 520 extends, the lock bolt 310 moves to the left and the stopper lever 330 moves out of the second locking position. The first driver 510 then resets the first push rod 520, and the lock bolt 310, under the action of the elastic member 320, moves the stopper lever 330 to the right, returning it to the first locking position. When the lock bolt 310 is in the first restraint position, the first driver 510 drives the first push rod 520, and the first push rod 520 extends so that the front end of the first contact surface 521 contacts the rear end of the second contact surface 313. As the first push rod 520 extends, the lock bolt 310 moves to the left and the stopper lever 330 moves out of the first restraint position. Then, the first driver 510 resets the first push rod 520, and the lock bolt 310, under the action of the elastic member 320, moves the stopper lever 330 to the right to the second restraint position.The design of the first contact surface 521 and the second contact surface 313 allows power transmission to be achieved without the need for a complex transmission mechanism.

[0047] In some embodiments of the present application, the lock tongue 100 is provided with a limit position, and when the lock bolt 310 moves to the limit position of the lock tongue 100, the lock bolt 310 limits the movement of the lock tongue 100, and when the lock bolt 310 moves away from the limit position of the lock tongue 100, the lock bolt 310 does not limit the movement of the lock tongue 100.

[0048] Specifically, when the locking bolt 310 needs to be locked, the dishwasher sends a signal, and the first driver 510 drives the locking bolt 310 to move to the limit position of the locking tongue 100. When the locking bolt 310 does not need to be locked, the first driver 510 drives the locking bolt 310 to reset. As can be understood, the limit position here is a structure in which the locking tongue 100 and the locking bolt 310 fit together, and when the locking tongue 100 moves, the locking bolt 310 can prevent the locking tongue 100 from moving. For example, the limit position may be a locking groove structure, a through-hole structure, etc.

[0049] 1 and 3, the locking tongue 100 includes a rod body 110 and a locking protrusion 120 at the end of the rod body 110, with a first locking groove 130 and a second locking groove 140 formed between the rod body 110 and the locking protrusion 120, and the first locking groove 130 constitutes a limit position of the locking tongue 100. As can be seen from the figures, the locking tongue 100 includes a rod body 110 and a locking protrusion 120 at the end of the rod body 110, with the width of the locking protrusion 120 being slightly larger than that of the rod body 110, with the first locking groove 130 and the second locking groove 140 formed between the locking protrusion 120 and the rod body 110, and a convex arc surface 121 formed on the locking protrusion 120 facing the lock cylinder 200. The first locking groove 130 is formed in the direction in which the lock tongue 100 separates from the lock cylinder 200, and the first locking groove 130 is approximately at a right angle. When the lock bolt 310 is extended into the first locking groove 130 by driving the first driver 510, the lock bolt 310 and the locking groove form surface contact in the direction in which the lock tongue 100 separates from the lock cylinder 200, and the contact surface is perpendicular to the direction in which the lock tongue 100 separates from the lock cylinder 200. In this way, the effect of the lock bolt 310 in blocking the lock tongue 100 is greatly improved, and the lock tongue 100 is effectively prevented from being forcibly separated from the lock cylinder 200 under the action of an external force (when pulled by the user).

[0050] 14 and 15 , the lock bolt 310 may be provided with a first guide surface 311, and when the lock bolt 310 is in the first restraining position but the lock tongue 100 is disengaged from the lock cylinder 200, the lock tongue 100 may contact the first guide surface 311 to drive the movement of the lock; alternatively, the lock bolt 310 may be provided with a second guide surface 312, and when the lock bolt 310 is in the first restraining position but the lock tongue 100 is inserted into the lock cylinder 200, the lock tongue 100 may contact the second guide surface 312 to drive the movement of the lock bolt 310. Specifically, there may be several cases, such as when a component fails and the lock bolt 310 remains in the first restraining position, requiring the user to forcefully open or close the door, or other cases requiring the user to forcefully open or close the door. Therefore, by providing a first guide surface 311 and making the first guide surface 311 an inclined surface, even when the lock bolt 310 is in the locked state, when the user's force to open the door exceeds a certain critical point, the limit position of the lock tongue 100 will cause the first guide surface 311 to move the lock bolt 310, thereby allowing the door to be opened. At this time, the lock bolt 310 can move from the first restraining position to the second restraining position. Of course, the force required for this critical point must be set large, which can prevent the user from accidentally opening the door and also allow the door to be opened in certain special cases. The same is true for the second guide surface 312, which is an inclined surface. In this case, even when the lock bolt 310 is in the locked state, if the user's force in closing the door exceeds a critical point, the convex arc surface 121 of the lock tongue 100 will come into contact with the second guide surface 312, and the second guide surface 312 will press against the lock bolt 310, thereby linking the movement of the lock bolt 310 and allowing the door to open. At this time, the lock bolt 310 will be able to move from the first restraining position to the second restraining position.

[0051] As shown in FIGS. 1 and 3 , in some embodiments of the present application, a lock cylinder 200 is provided with a rotating arm 210, a locking claw 213, a lever 212, and a link 211 are provided on the rotating arm 210, the locking claw 213, the lever 212, and the link 211 are arranged to intersect with each other, and a rotation axis is provided at the intersection, so that the rotating arm 210 can rotate around the rotation axis, In the process of inserting the lock tongue 100 into the lock cylinder 200, the lock tongue 100 acts on the lever 212 to rotate the rotating arm 210 so that the locking claw 213 locks the lock tongue 100. In the process of removing the lock tongue 100 from the lock cylinder 200, the lock tongue 100 acts on the locking claw 213 to rotate the rotating arm 210 so that the locking claw 213 releases the lock tongue 100. The lever 212 is provided with a limit position, and when the lock bolt 310 moves to the limit position of the link 211, the lock bolt 310 limits the movement of the rotating arm 210 and thereby limits the movement of the lock cylinder 200, and when the lock bolt 310 moves away from the limit position of the link 211, the lock bolt 310 does not limit the movement of the rotating arm 210 and does not limit the movement of the lock cylinder 200.

[0052] Specifically, the locking claw 213, the lever 212, and the link 211 are integrally formed to form the rotating arm 210, which is rotatable around a rotation axis, and a compression spring 220 is provided at an end of the link 211, one extended end of the compression spring 220 is inserted into and rotatably provided at the end of the link 211, and the other extended end of the compression spring 220 is inserted into and rotatably provided at a lower case 620, which will be described below. When the door body is in a closed state, the rotating arm 210 is in a first position, and at this time, the compression spring 220 is in a deformed or uncompressed state. When the compression spring 220 is in a deformed state (for example, a compressed state), the compression spring 220 applies a force to the rotating arm 210 to hold the rotating arm 210 in the first position. When the door body is opened, the lock tongue 100 applies force to the locking claw 213 by the locking protrusion 120, and then the entire rotating arm 210 rotates (clockwise) following the movement of the lock tongue 100. At this time, the compression spring 220 rotates (counterclockwise) following under the action of the link 211 and is compressed to its maximum value, and as the lock tongue 100 moves, it separates from the locking claw 213 and the compression spring 220 recovers its deformation, thereby pushing the rotating arm 210 to hold it in the second position. When the door is closed, the lock tongue 100 applies force to the lever 212 via the locking protrusion 120. The end surface of the locking protrusion 120 is a convex arc surface 121, which reduces the contact area with the lever 212 and effectively reduces resistance. The entire rotating arm 210 rotates (counterclockwise) following the movement of the lock tongue 100. At this time, the compression spring 220 rotates (clockwise) under the action of the link 211 and is compressed to its maximum value. As the lock tongue 100 moves, it reaches a predetermined position, the locking pawl 213 fits into the second locking groove 140, and the compression spring 220 recovers its deformation, thereby pressing the rotating arm 210 to hold it in the first position. The rotation plane of the rotating arm 210 and the rotation plane of the compression spring 220 are on the same plane or parallel to each other, which is advantageous for improving the overall door lock's slimmer shape.

[0053] 1, a rotating rod 230 is provided in the rotation path of lever 212. When locking the lock tongue 100 and the lock cylinder 200, the lever 212 rotates counterclockwise to operate the rotating rod 230, which then presses the compression of spring 231 clockwise, causing the rotating rod 230 to separate from the microswitch 350. When the lock tongue 100 is to be released from the lock cylinder 200, the lever 212 rotates clockwise, and the spring 231 presses the rotating rod 230 to rotate counterclockwise so that the rotating rod 230 touches the button of the microswitch 350. With this arrangement, when the lock tongue 100 and the lock cylinder 200 are locked or released, the dishwasher generates corresponding information and outputs it on the display screen.

[0054] The limit position of the link 211 acts in the same way as the limit position of the lock tongue 100; that is, by inhibiting the limit position of the link 211, movement of the rotating arm 210 is inhibited, and movement of the lock tongue 100 can be inhibited. As shown in FIGS. 1 to 3, the end of the link 211 forms the limit position of the lock cylinder 200, and the distance from this end to the rotation axis corresponds to a long force arm, which significantly improves the inhibiting effect by leveraging.

[0055] In some embodiments of the present application, the first driving member 500 is used to drive the lock bolt 310 under a preset condition. Specifically, the preset condition may be a preset temperature. A dishwasher sequentially goes through a pre-wash, rinse, and dry cycle in one wash cycle. The pre-wash is usually performed using cold or hot water, while the rinse is performed using hot water. The preset condition may be designed to be a temperature value for the rinse stage. When the dishwasher operates up to the rinse stage, a predetermined wash timing is controlled so that the first driving member 500 drives and locks the lock bolt 310, thereby preventing a user from accidentally opening the door and getting injured. As can be seen, the preset condition may be designed to determine whether the washing pump of the dishwasher is operating, such that when the washing pump is operating, a water flow is sprayed from the spray arm, and when the washing pump is operating, the first driving member 500 is controlled to drive the lock bolt 310, thereby restricting the lock tongue 100 or the lock cylinder 200, to prevent the user from accidentally opening the door and getting injured, regardless of the stage of the dishwasher. A microswitch 340 may be provided, which controls the lock bolt 310 to lock when it detects that the lock tongue 100 is inserted, and the preset condition is to close the lock tongue 100 and the lock cylinder 200. For some other appliances, such as a washing machine, the preset condition may be the rotation speed, and for an oven, the preset condition may be the temperature.

[0056] Furthermore, the first driver 510 of the first driving member 500 is an element that performs a corresponding operation after being energized. Specifically, the first driver 510 is a wax motor. The wax motor is a driving device that includes a thermistor, which is attached to a sealed container filled with solid wax. When the solid wax is heated by the energized thermistor, the solid wax melts and expands, thereby driving the piston outward. When the thermistor is de-energized, the liquid wax cools, and an internal spring returns the piston to its original position. During the course of operation of the dishwasher, upon receiving a signal requiring the lock bolt 310 to be locked, the first driver 510 is energized and drives the movement of the lock bolt 310, after which the first driver 510 can be reset, with the lock bolt 310 being restrained in a first restrained position, and upon receiving a signal requiring the lock bolt 310 to be unlocked, the first driver 510 is again energized and drives the movement of the lock bolt 310, after which the first driver 510 can be reset, with the lock bolt 310 being restrained in a second restrained position.

[0057] 11, the door lock further includes an upper case 610 and a lower case 620, where the upper case 610 is connected to the lower case 620 to form a storage space, in which the lock cylinder 200, the lock bolt 310, and the first drive member 500 are installed. The upper case 610 is connected to the lower case 620 as a cover, and the lower case 620 is provided with a notch through which the lock tongue 100 can enter and exit. In this embodiment, the upper case 610 and the lower case 620, together with the lock cylinder 200, the lock bolt 310, and the first drive member 500, are integrated into a single whole member, which is convenient for installation in a dishwasher.

[0058] The present application further discloses other door locks, which will be introduced in detail below.

[0059] As shown in FIGS. 17 to 20 , a door lock includes the lock tongue 100, a lock cylinder 200, and a lock member 300. In some embodiments, the lock tongue 100 may be mounted on a door body, and the lock cylinder 200 may be mounted on a machine body. In other embodiments, the lock tongue 100 may be mounted on a machine body, and the lock cylinder 200 may be mounted on the door body. The lock tongue 100 and the lock cylinder 200 are configured to mate with each other to lock or unlock the door, and they can be separated or closed under the application of force. For example, when a user pulls the door body to open, the lock tongue 100 separates from the lock cylinder 200. When the user pushes the door body to close, the lock tongue 100 and the lock cylinder 200 are locked together. The specific configurations of the lock tongue 100 and the lock cylinder 200 can be selected according to actual circumstances. In this embodiment, an example will be described in which the lock tongue 100 is mounted on the door body, and the lock cylinder 200 is mounted on the machine body.

[0060] Generally, the lock tongue 100 is made of a metal material, such as a single, highly strong part cast from iron or aluminum, and is fixed to the top of the door body with a screw fastener. The door body has an inner door body and an outer door body, and a mounting position for mounting the lock tongue 100 is formed on the top of the inner door body, and the lock tongue 100 can be screwed to the mounting position on the inner door body. The lock tongue 100 is movable in accordance with the movement of the door body. When the door body needs to be closed, the lock tongue 100 is inserted into the lock cylinder 200 along with the door body and locked by the lock cylinder 200, so that the door body is in a closed state. When the door body needs to be opened, the lock tongue 100 is disengaged from the lock cylinder 200 along with the door body, so that the door body is in an open state. In this way, the door can be opened or closed by pulling or pushing it. In some cases, the door may be opened by mistake by the user. Therefore, by providing the locking member 300, the locking member 300 can automatically restrict the movement of the locking tongue 100 or the locking cylinder 200 when the dishwasher reaches a certain operating condition, and prevent the locking tongue 100 and the locking cylinder 200 from separating.

[0061] Specifically, when the locking member 300 restricts the movement of the lock tongue 100, the lock tongue 100 cannot open as the door body is opened, and this restriction poses a major obstacle to the lock tongue 100, thereby preventing the door body from being forcibly opened or significantly increasing the resistance to the door body opening, making the user aware that the door body cannot be opened at this point and preventing the door body from being opened due to separation of the lock tongue 100 and the lock cylinder 200. Since the specific structures of the different lock tongues 100 and the lock cylinder 200 are different, there are various methods for locking or unlocking the lock tongue 100 and the lock cylinder 200, but the lock tongue 100 must move along with the door body, and the lock bolt 310 only needs to restrict the movement of the lock tongue 100 along with the door body.

[0062] As can be understood, when the lock tongue 100 is inserted into the lock cylinder 200, if the lock cylinder 200 wants to complete the locking of the lock tongue 100, the lock cylinder 200 must move accordingly to lock the lock tongue 100. The same is true when the lock tongue 100 is to be removed from the lock cylinder 200, if the lock cylinder 200 does not move accordingly, the lock tongue 100 cannot be released from the lock cylinder 200. Therefore, restricting the movement of the lock cylinder 200 by the lock member 300 can significantly hinder the removal of the lock tongue 100 from the lock cylinder 200, and the lock member 300 can be locked when necessary, preventing the user from accidentally opening the door.

[0063] As can be seen from the above, when the locking member 300 is not activated, the locking tongue 100 and the locking cylinder 200 can normally open and close the door. When the locking member 300 is activated, it is equivalent to adding a mechanical protection device to the locking structure consisting of the locking tongue 100 and the locking cylinder 200. The locking member 300 restrains the locking tongue 100 or the locking cylinder 200, effectively preventing the door from being forcibly opened or significantly increasing the resistance to opening the door, thereby avoiding danger. For example, when a dishwasher is in the high-temperature rinse cycle, the spray arms in the wash chamber of the dishwasher rotate and spray high-temperature, high-pressure water. If the door is forcibly opened, the high-temperature, high-pressure water is likely to be sprayed outside the dishwasher, causing injury to the user. However, the action of the locking member 300 effectively prevents this situation from occurring.

[0064] As shown in FIG. 17 , in some embodiments of the present application, the lock tongue 100 is provided with a limit member, the lock member 300 includes a third driver 370 and a lock bolt 310, the lock bolt 310 is provided at the driving end of the third driver 370, and the third driver 370 drives the lock bolt 310 to move it to the limit member of the lock tongue 100, thereby limiting the movement of the lock tongue 100. Specifically, the third driver 370 is a device that performs a corresponding operation after being energized, and the third driver 370 can be of various types, such as a reciprocating driver or a rotary driver, as long as it can drive the movement of the locking bolt 310. In this embodiment, a reciprocating driver is used to synchronize the reciprocating movement of the locking bolt 310. When the locking member 300 needs to be locked, the dishwasher sends a signal, and the third driver 370 drives the locking bolt 310 to move to the limiting member of the locking tongue 100. When the locking member 300 does not need to be locked, the third driver 370 drives the locking bolt 310 to reset. It can be understood that the limiting member here has a structure that can be fitted with the locking bolt 310, and the locking bolt 310 can prevent the locking tongue 100 from moving when it tries to move. For example, the limiting member of the locking tongue may have a locking groove structure, a through-hole structure, etc.

[0065] Specifically, as shown in FIG. 17 , in some embodiments of the present application, the limit member is a locking protrusion 120, the lock tongue 100 comprises a rod body 110, the locking protrusion 120 is at the end of the rod body 110, and the first locking groove 130 is formed between the rod body 110 and the locking protrusion 120.

[0066] As can be seen from the figure, the lock tongue 100 comprises the rod body 110, and the width of the locking protrusion 120 is greater than that of the rod body 110. The locking protrusion 120 may be integrally formed with the rod body 110, which provides greater strength. The first locking groove 130 and the second locking groove 140 are formed between the locking protrusion 120 and the rod body 110, and the first locking groove 130 and the second locking groove 140 are symmetrically distributed. The locking protrusion 120 has the convex arc surface 121 facing the lock cylinder 200. The first locking groove 130 is formed in the direction in which the lock tongue 100 separates from the lock cylinder 200, and the first locking groove 130 is approximately perpendicular. When the lock bolt 310 is extended into the first locking groove 130 by driving the third driver 370, the lock bolt 310 and the first locking groove 130 form surface contact in the direction in which the lock tongue 100 separates from the lock cylinder 200, and the contact surface is perpendicular to the direction in which the lock tongue 100 separates from the lock cylinder 200. This greatly improves the effect of the lock bolt 310 blocking the lock tongue 100 and effectively prevents the lock tongue 100 from separating from the lock cylinder 200 under the action of an external force (when pulled by the user).

[0067] Furthermore, as shown in FIGS. 17 to 19, the lock cylinder 200 includes a rotating arm 210, and a locking claw 213, a lever 212, and a link 211 are provided on the rotating arm 210, and the locking claw 213, the lever 212, and the link 211 are arranged to intersect with each other, and a rotation axis is provided at the intersection, and the rotating arm 210 is rotatable around the rotation axis, In the process of the lock cylinder 200 locking the lock tongue 100, the lock tongue 100 acts on the lever 212 to rotate the rotating arm 210 so that the locking claw 213 locks the lock tongue 100, and in the process of the lock cylinder 200 releasing the lock tongue 100, the lock tongue 100 acts on the locking claw 213 to rotate the rotating arm 210 so that the locking claw 213 releases the lock tongue 100.

[0068] Specifically, the locking claw 213, the lever 212, and the link 211 are integrally formed to form the rotating arm 210, which is rotatable around a rotation axis, the compression spring 220 is provided at an end of the link 211, one extension end of the compression spring 220 is inserted into and rotatably provided at an end of the link 211, and the other extension end of the compression spring 220 is inserted into and rotatably provided at a lower case 620 (described below). When the door body is in a closed state, the rotating arm 210 is in a first position, in which the compression spring 220 is in a deformed or uncompressed state. When the compression spring 220 is in a deformed state (e.g., a compressed state), the compression spring 220 applies a force to the rotating arm 210 to hold the rotating arm 210 in the first position. When the door body is opened, the lock tongue 100 applies force to the locking claw 213 by the locking protrusion 120, and then the entire rotating arm 210 rotates (clockwise) following the movement of the lock tongue 100. At this time, the compression spring 220 rotates (counterclockwise) following under the action of the link 211 and is compressed to its maximum value, and as the lock tongue 100 moves, it separates from the locking claw 213 and the compression spring 220 recovers its deformation, thereby pushing the rotating arm 210 to hold it in the second position. When the door is closed, the lock tongue 100 applies force to the lever 212 through the locking protrusion 120. The end surface of the locking protrusion 120 has a convex arc surface 121, which reduces the contact area with the lever 212 and effectively reduces resistance, causing the entire rotating arm 210 to rotate (counterclockwise) following the movement of the lock tongue 100. At this time, the compression spring 220 rotates (clockwise) under the action of the link 211 and is compressed to its maximum value. As the lock tongue 100 moves, it reaches a predetermined position, the locking claw 213 fits into the second locking groove 140, and the compression spring 220 recovers its deformation, thereby pressing the rotating arm 210 to hold it in the first position. The rotation plane of the rotating arm 210 and the rotation plane of the compression spring 220 are on the same plane or parallel to each other, which is advantageous for improving the overall door lock's slimmer shape.

[0069] As shown in Figures 17 to 20, in some embodiments of the present application, the direction in which the lock tongue 100 is inserted into and removed from the lock cylinder 200 is defined as a first direction (front-to-back direction in the figures), a direction perpendicular to the first direction is defined as a second direction (left-to-right direction in the figures), and the lock bolt 310 and the third driver 370 are sequentially arranged on one side of the lock tongue 100 in the second direction. Specifically, the third driver 370 is a linear reciprocating driver, and the lock bolt 310 and the third driver 370 are sequentially distributed and arranged on one side of the lock tongue 100, thereby making full use of the space of the door lock. By installing in this manner, the movement direction of the lock bolt 310 is perpendicular to the direction in which the lock tongue 100 separates from the lock cylinder 200, and the force applied to the lock bolt 310 by the locking protrusion 120 on the lock tongue 100 is perpendicular to the lock bolt 310, thereby significantly improving the blocking effect of the lock bolt 310 against the lock tongue 100. Furthermore, since the movement modes of the locking member 300 and the lock cylinder 200 are different, in order to avoid overcrowding of parts, the locking member 300 is provided on the left side of the lock tongue 100 in the second direction, and the lock cylinder 200 (the rotating arm 210) is provided on the right side of the lock tongue 100 in the second direction, thus effectively reducing the related costs, avoiding the interference of movement between the locking member 300 and the rotating arm 210, and effectively reducing the volume of the door lock, which is more advantageous for miniaturizing the door lock.

[0070] The above several embodiments have described the cases where the locking member 300 locks the lock tongue 100. Now, we will describe the case where the locking member 300 locks the lock cylinder 200. As shown in Fig. 21 , a limit member is provided on the lock cylinder 200, and the locking member 300 includes the third driver 370 and the lock bolt 310. The lock bolt 310 is provided at the driving end of the third driver 370. The third driver 370 drives the lock bolt 310 to move it to the limit member of the lock cylinder 200, thereby limiting the movement of the lock cylinder 200. The difference from the above several embodiments is that the locking member 300 in this embodiment is modified to limit the movement of the lock cylinder 200. As can be understood, in the process of locking or unlocking the lock tongue 100 and the lock cylinder 200, the lock cylinder 200 needs to move to a certain extent as the lock tongue 100 moves, so by restraining the lock cylinder 200, its movement can be limited, and thus the movement of the lock tongue 100 can be prevented, and the door body can be effectively prevented from being opened.

[0071] 21 to 24, the lock cylinder 200 includes a rotating arm 210, which has a locking claw 213, a lever 212, and a link 211, and a limit member is provided on the link 211. When the door body is closed, the lock tongue 100 applies force to the lever 212 to rotate the entire rotating arm 210, and when the door body is opened, the lock tongue 100 applies force to the locking claw 213 to rotate the entire rotating arm 210. When the locking member 300 needs to be locked, the locking member 300 operates to restrict the limit member of the link 211, thereby restricting the rotation of the entire rotating arm 210. Since the locking pawl 213 and the lever 212 are both used to generate a corresponding movement with the locking tongue 100, the restriction of the locking member 300 to the rotating arm 210 is realized by the link 211, which avoids interfering with the corresponding movement between the locking pawl 213 and the lever 212 and the locking tongue 100, and is more advantageous in terms of component layout.

[0072] 21 to 24, the limit member is provided at the end of the link 211, and the limit member and the link 211 are integrally molded. Specifically, the rotating arm 210, which is composed of the locking claw 213, the lever 212, and the link 211, rotates around a rotation axis, and a limit member is provided at the end of the link 211. The distance from the end to the rotation axis corresponds to a long force arm, which significantly improves the blocking effect by lever action. Specifically, as shown in FIGS. 21 and 24, the direction in which the lock tongue 100 is inserted and removed from the lock cylinder 200 is defined as a first direction (the front-to-back direction in the drawings), and a direction perpendicular to the first direction is defined as a second direction (the left-to-right direction in the drawings). The rotating arm 210, the lock bolt 310, and the third driver 370 are sequentially arranged on one side of the lock tongue 100 in the second direction. With this design, the movements of the rotating arm 210, the lock bolt 310 and the third driver 370 do not interfere with each other, making effective use of the internal space and reducing the volume occupied by the door lock.

[0073] 22 to 24, the limit member at the end of the link 211 has an arcuate surface and is provided with the second notch 360 corresponding to the end of the lock bolt 310. When the lock bolt 310 moves to a predetermined position, the end of the link 211 fits into the second notch 360, effectively preventing the link 211 from slipping out. In addition, the lock bolt 310 has an overall L-shaped structure, which is more suited to the location of the third driver 370, making full use of the internal space of the door lock and preventing a portion of the third driver 370 from protruding too much and occupying external space.

[0074] In order to generate information corresponding to the locking or unlocking of the lock tongue 100 and the lock cylinder 200, in some embodiments, as shown in FIGS. 17 to 19 , the door lock further includes a microswitch 350, which is triggered when the rotating arm 210 rotates. During the rotation of the rotating arm 210, the microswitch 350 can be directly or indirectly touched. For example, the door lock further includes a lever 230, one end of which is connected to the lever 212 and the other end of which is used to touch the button of the microswitch 350. When the lock tongue 100 and the lock cylinder 200 are closed, the rotating arm 210 rotates counterclockwise, and the lever 212 couples the lever 230 to rotate clockwise, compressing the spring 231 and separating the lever 230 from the microswitch 350. When the lock tongue 100 separates from the lock cylinder 200, the rotating arm 210 rotates clockwise, and the lever 212 gradually separates from the lever 230. The lever 230 rotates counterclockwise under the action of the expanding spring 231, and contacts the microswitch 350. As can be seen from the above description of the embodiment, the present application is configured with the lock tongue 100 and the lock cylinder 200, which can be locked or unlocked, and further includes a mechanical locking structure, the locking member 300, which can restrain the lock tongue 100 or the lock cylinder 200, thereby preventing the lock tongue 100 and the lock cylinder 200 from being forcibly separated by external force when locked. When this door lock is applied to a home appliance such as a dishwasher, it can effectively prevent users, especially children, from accidentally opening the door and getting injured.

[0075] In some embodiments of the present application, as shown in Figures 21 to 24, the door lock further includes the second driving member 700, which is used to apply force to the rotating arm 210 to rotate the rotating arm 210 from the first position to the second position. Specifically, by providing the second driving member 700, automatic separation of the lock tongue 100 and the lock cylinder 200 can be achieved when the locking member 300 is in an unlocked state. The same rotating arm 210 can lock the locking member 300 and automatically open the second driving member 700, thereby enhancing the functionality of the door lock and making it applicable to more different product scenarios. Taking a dishwasher as an example, a dishwasher goes through a washing cycle that involves pre-washing, rinsing, and drying in sequence. The rinsing stage is usually a high-temperature rinse, and the dishes need to be dried after the rinsing stage is completed. During the rinsing stage, the locking member 300 locks the dishwasher. During the drying stage, the second driving member 700 applies force to the rotating arm 210, which then rotates to release the locking tongue 100, allowing the door to open automatically. Since the dishes are still hot after the rinsing stage is completed, the moisture on the dishes will evaporate with the residual heat after the door is opened, thereby achieving the drying purpose and allowing the high-temperature and high-humidity airflow from the washing chamber of the dishwasher to escape, further improving the drying effect.

[0076] 24, the second driving member 700 includes the swing lever 730 and the second driver 710, which are rotatably provided, and the second driver 710 drives one end (right end) of the swing lever 730 to rotate the other end (left end) of the swing lever 730, which operates on the rotating arm 210 and rotates the rotating arm 210 to switch from the first position to the second position. Specifically, the swing lever 730 plays a role in transmitting force, and by providing a central member such as the swing lever 730, the force of the second driver 710 can be transmitted. Thus, a simple reciprocating driver can be selected for the second driver 710, which reduces the complexity of the door lock and makes full use of the internal space of the door lock.

[0077] Specifically, the compression spring 220 is provided at the other end (left end) of the swing lever 730, one extension end of the compression spring 220 is rotatably connected to the rotating arm 210, and the other extension end of the compression spring 220 is inserted into the rotating arm 210. As shown in Fig. 21 , the rotating arm 210 has the link 211, the mounting post 731 is provided at the other end (left end) of the swing lever 730, the compression spring 220 is fitted into the mounting post 731 or the compression spring 220 is adhesively fixed to the mounting post 731, a mounting hole is provided at the end of the link 211, one extension end of the compression spring 220 is inserted into the mounting hole and is rotatable, and the other extension end of the compression spring 220 is inserted into the swing lever 730.

[0078] The operation process is as follows: the second driver 710 may directly drive the swing lever 730, or may indirectly drive the swing lever 730. In this embodiment, the second push rod 720 is provided to realize the force transmission, thus facilitating the arrangement of each element. When the door body is in the closed state and it is desired to open the door body, the second driver 710 drives the movement of the second push rod 720, the second push rod 720 generates a force on the right end of the swing lever 730, causing the swing lever 730 to rotate, the swing lever 730 rotates the compression spring 220 in conjunction with the compression spring 220, and the compression spring 220 rotates the entire rotating arm 210 in conjunction with the link 211. In this process, the compression The spring 220 is compressed, and when the compression spring 220 is compressed to its maximum value, the rotating arm 210 rotates to a certain extent and separates from the lock tongue 100. At this time, the compression spring 220 begins to reset and applies force to the rotating arm 210, keeping the rotating arm 210 in the second position. At this time, the second driver 710 can be turned off, and the second driver 710 interlocks with the resetting of the second push rod 720. When the door body is closed, the lock tongue 100 presses the lever 212, and the entire rotating arm 210 rotates (counterclockwise) following the movement of the lock tongue 100, causing the compression spring 220 and the swing lever 730 to rotate clockwise in conjunction with each other. During this process, the compression spring 220 is compressed to its maximum value, and when the lock tongue 100 reaches a predetermined position, the rotating arm 210 has rotated to a certain extent, and since the compression spring 220 is compressed to its maximum value, it switches to reset, applying force to the rotating arm 210 and maintaining the rotating arm 210 in the first position.

[0079] 21, 22, and 23, the mounting space 622 is formed between the rotating arm 210 and the locking bolt 310 of the locking member 300, and the swing lever 730 is located in the mounting space 622. Specifically, the rotating arm 210 is designed to be rotatable, while the locking bolt 310 moves in a linear reciprocating manner. Since the two structures have different movement modes, by arranging the rotating arm 210 and the locking member 300 in this manner, sufficient space can be provided for the swing lever 730, and the operation of the swing lever 730 to control the compression spring 220 is not interfered with, provided that the normal operation of each component is ensured.

[0080] In some embodiments of the present application, as shown in FIG. 17 , the door lock further includes the upper case 610 and the lower case 620, the upper case 610 is connected to the lower case 620 to form a receiving space, and the lock cylinder 200 and the lock member 300 are installed in the receiving space; The slide rail 621 is provided between the upper case 610, the lower case 620, or the upper case 610 and the lower case 620, and the lock bolt 310 of the locking member 300 can move back and forth on the slide rail 621 under the action of the third driver 370 of the locking member 300.

[0081] Specifically, the locking member 300, the second driving member 700, and the lock cylinder 200 are all mounted at corresponding positions on the lower case 620, the upper case 610 is connected to the lower case 620 as a cover, and the lower case 620 is provided with the notch 623 through which the lock tongue 100 can be inserted and removed. The slide rail 621 may be provided on the upper case 610, the lower case 620, or between the upper case 610 and the lower case 620, and serves to restrain and guide the lock bolt 310, preventing the lock bolt 310 from shifting, strengthening the structural strength of the lower case 620, and improving stability when the lock bolt 310 receives the force of the lock tongue 100. In this embodiment, the upper case 610 and the lower case 620 integrate the various components into a single overall component, thereby facilitating installation of the door lock. Taking a dishwasher as an example, the dishwasher has an inner tub, and a reinforcing rib is provided around the opening around the inner tub. The reinforcing rib strengthens the structural strength of the entire inner tub and prevents deformation of the inner tub. The reinforcing rib generally has a mounting position for a door lock. The door lock, which combines the upper case 610 and the lower case 620, is attached to the reinforcing rib and then locked with screws, and can be fixed in this way, making installation easy.

[0082] In some embodiments of the present application, the locking member 300 is operated under a preset condition to restrict movement of the locking cylinder 200 or the locking tongue 100. Specifically, the preset condition may be a preset temperature. A dishwasher sequentially performs a pre-wash, rinse, and dry cycle in one wash cycle. The pre-wash is usually performed using cold or hot water, while the rinse cycle uses hot water. The preset condition may be set to a temperature value for the rinse stage. When the dishwasher operates up to the rinse stage, the locking member 300 is controlled to lock at a predetermined wash timing, thereby preventing a user from accidentally opening the door and getting injured. As can be seen, the preset condition may be designed to determine whether the washing pump of the dishwasher is operating, and when the washing pump is operating, a water flow is sprayed from the spray arm, and when the washing pump is operating, the locking member 300 is controlled to restrict the locking tongue or locking cylinder, preventing the user from accidentally opening the door and getting injured, regardless of the stage of the dishwasher. A microswitch 340 may be provided, and when it detects that the locking tongue 100 is inserted, it controls the locking bolt 310 to lock, and the preset condition is to close the locking tongue 100 and the locking cylinder 200. For some other appliances such as a washing machine, the preset condition may be the rotation speed, and for an oven, the preset condition may be the temperature.

[0083] In some embodiments of the present application, the third driver 370 of the locking member 300 and the second driver 710 of the second driving member 700 are elements that perform corresponding operations when energized. Specifically, the third driver 370 and the second driver 710 are wax motors. The wax motor is a driving device including a thermistor, which is attached to a sealed container filled with solid wax. When the solid wax is heated by the energized thermistor, it melts and expands, thereby driving a piston outward. When the thermistor is turned off, the liquid wax cools, and an internal spring returns the piston to its initial position. During operation of the dishwasher, upon receiving a signal requiring the locking member 300 to be locked, the third driver 370 is energized to drive the lock bolt 310 to move. Upon receiving a signal requiring the locking member 300 to be unlocked, the third driver 370 is turned off to drive the lock bolt 310 to reset. In addition, because a wax motor is used, if the locking member 300 is in a locked state and the entire device is suddenly turned off, the lock bolt 310 can be reset, allowing the user to pull the door normally. When the second driver 710 receives a signal that the door needs to be automatically opened, the second driver 710 is energized to drive the second push rod 720 to move. When the second driver 710 is then turned off, the second driver 710 resets the second push rod 720, and the second push rod 720 separates from the swing lever 730.

[0084] As can be seen from the above, the present application discloses a door lock, which can be applied to appliances such as dishwashers, and the door lock has a lock tongue 100 and a lock cylinder 200. The lock tongue 100 and the lock cylinder 200 form a door lock structure, i.e., the door body can be opened and closed by closing or releasing the lock tongue 100 and the lock cylinder 200. It can be understood that the opening and closing of the door body is based on an external force, for example, when a user pushes the door body to close, the lock tongue 100 and the lock cylinder 200 are closed, and when the user pushes the door body to open, the lock cylinder 200 releases the lock tongue 100, and the lock cylinder 200 and the lock tongue 100 are separated from each other. Based on this, a locking member 300 of the machine protection device is added, which is a physical protective structure that can be used to restrict the movement of the locking cylinder 200 or the locking tongue 100. In this way, when the locking member 300 needs to be locked, the dishwasher can control the locking of the locking member 300, and effectively prevent the door from being opened.

[0085] The above are merely preferred embodiments of the present application and do not limit the scope of the patent of the present application. Equivalent structural transformations made based on the concept of the present application using the contents of the specification and attached drawings of the present application, as well as those directly or indirectly applicable to other related technical fields, are all included in the scope of patent protection of the present application. [CROSS-REFERENCE TO RELATED APPLICATIONS]

[0086] This application claims priority to a Chinese patent application bearing application number 202210992823.1 and titled "Door Lock and Dishwasher" submitted to the China Patent Office on August 18, 2022, and application number 202210992834.X and titled "Door Lock and Dishwasher" submitted to the China Patent Office on August 18, 2022, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0087] 100 lock tongue, 110 rod body, 120 locking protrusion, 121 convex arc surface, 130 first locking groove, 140 second locking groove, 200 lock cylinder, 210 rotating arm, 211 link, 212 lever, 213 locking pawl, 220 compression spring, 230 rotating rod / lever, 231 spring, 300 locking member, 310 lock bolt, 311 first guide surface, 312 second guide surface, 313 second contact surface, 314 through hole, 315 insertion port, 320 elastic member, 330 stopper lever, 331 rod body, 332 first bent body, 333 second bent body, 340 / 350 microswitch, 360 second notch, 370 third driver, 400 restraint mechanism, 410 first stopper, 411 first notch, 412 second guide surface, 420 second stopper, 421 first through hole, 422 second through hole, 423 first guide surface, 430 first guide groove, 440 second guide groove, 441 third guide surface, 450 first path, 460 second path 500 first drive member, 510 first driver, 520 first push rod, 521 first contact surface, 610 Upper case, 620 Lower case, 621 Slide rail, 622 Mounting space, 623 Notch, 700 second driving member, 710 second driver, 720 second push rod, 730 rocker lever, 731 mounting post

Claims

1. A door lock, Lock tongue and a lock cylinder for locking or unlocking the lock tongue; Rock bolts and a restraint mechanism having a first restraint position and a second restraint position, wherein when the lock bolt is in the first restraint position, the lock bolt restricts movement of the lock tongue or the lock cylinder, and when the lock bolt is in the second restraint position, the lock bolt does not restrict movement of the lock tongue or the lock cylinder; a first drive member for driving the lock bolt to move away from the first restraining position so that the lock bolt reaches the second restraining position, or for driving the lock bolt to move away from the second restraining position so that the lock bolt reaches the first restraining position; a rotating arm is provided on the lock cylinder, a locking claw, a lever, and a link are provided on the rotating arm, the locking claw, the lever, and the link are arranged to intersect with each other and a rotation axis is provided at the intersection, and the rotating arm is rotatable around the rotation axis; A door lock in which the link is provided with a limit position, and when the lock bolt moves to the limit position of the link, the lock bolt limits the movement of the rotating arm and thereby the movement of the lock cylinder, and when the lock bolt moves away from the limit position of the link, the lock bolt does not limit the movement of the rotating arm but does not limit the movement of the lock cylinder.

2. 2. The door lock of claim 1, wherein when the lock bolt is in the second restrained position, the lock bolt has a tendency to move from the second restrained position to the first restrained position.

3. 3. The door lock of claim 2, wherein the first drive member is reset during the process of driving the lock bolt to move away from the second restraining position, and the lock bolt reaches the first restraining position under the action of the movement tendency.

4. 4. The door lock of claim 3, wherein the first drive member is reset during the process of driving the lock bolt to move away from the first restraining position, and the lock bolt reaches the second restraining position under the action of the movement tendency.

5. a resilient member is provided on the lock bolt, and when the lock bolt is in the second restraining position, the resilient member applies a force to the lock bolt such that the lock bolt has a tendency to move from the second restraining position to the first restraining position; 2. The door lock of claim 1, wherein the first drive member is used to drive the lock bolt to move away from the second restraining position so that the lock bolt reaches the first restraining position under the action of the elastic member, or is used to drive the lock bolt to move away from the first restraining position so that the lock bolt reaches the second restraining position under the action of the elastic member.

6. 6. The door lock of claim 5, wherein the resilient member is compressed to apply a thrust to the lock bolt in the second restrained position.

7. 6. The door lock of claim 5, wherein a direction in which the lock tongue is inserted into and removed from the lock cylinder is defined as a first direction, a direction perpendicular to the first direction is defined as a second direction, and the lock bolt and the elastic member are sequentially arranged on one side of the lock tongue in the second direction.

8. a stopper lever movable on the lock bolt is provided, and the lock bolt is restrained at the first restraining position or the second restraining position by the stopper lever; 2. The door lock of claim 1, wherein the restraining mechanism is provided with a first path and a second path, the first path and the second path form a loop, and the stopper lever can reach the first restraining position along the first path from the second restraining position, or can reach the second restraining position along the second path from the first restraining position.

9. 9. The door lock of claim 8, wherein the stopper lever comprises a rod body, a first bending body bent along a first end of the rod body, a second bending body bent along a second end of the rod body, the second bending body and the first bending body being bent in opposite directions relative to the rod body, the first bending body being connected to the lock bolt, and the second bending body being moved and connected to the restraining mechanism.

10. The restraint mechanism includes: a first stopper provided with a first notch that constitutes the second restraining position; a second stopper provided at a distance from the first stopper and forming a first through-hole and a second through-hole communicating with the first notch; a first guide groove provided on one side of the first stopper and communicating with the first through hole; a second guide groove provided on the other side of the first stopper, communicating with the second through hole and further communicating with the first guide groove, the communicating location of which constitutes the first restraining position, and surrounding the first stopper together with the first guide groove; The door lock according to claim 8 , wherein the first through hole and the first guide groove form the first path, and the second guide groove and the second through hole form the second path.

11. 11. The door lock of claim 10, wherein the first stopper and the second stopper are arranged sequentially in a direction from the first restraining position to the second restraining position, the second stopper is provided with a first guide surface, the first through hole is formed between the first guide surface and the first stopper, the first guide surface is positioned in a direction of disengagement from the first notch of the stopper lever, and in the process of the stopper lever disengaging from the first notch, the stopper lever comes into contact with the first guide surface, passes through the first through hole and slides into the first guide groove.

12. 12. The door lock of claim 11, wherein the first guide surface protrudes from the first stopper toward the first guide groove so that the stopper lever can move beyond the first through hole and along the first guide groove to the first restraining position in accordance with the movement of the lock bolt after passing through the first through hole and sliding into the first guide groove.

13. 11. The door lock according to claim 10, wherein the first stopper is provided with a second guide surface, the second guide surface is positioned in a direction in which the stopper lever moves away from the first restraining position, and the stopper lever comes into contact with the second guide surface and moves along the second guide groove in the process of moving away from the first restraining position.

14. 11. The door lock according to claim 10, wherein a third guide surface is provided in the second guide groove, the first stopper and the third guide surface are provided sequentially in a direction from the first restraining position to the second restraining position, and in the process of the stopper lever disengaging from the first restraining position, the stopper lever comes into contact with the third guide surface and moves, following the lock bolt, through the second through-hole to the second restraining position.

15. 2. The door lock of claim 1, wherein the drive direction of the first drive member is transverse to the direction of movement of the lock bolt.

16. the first drive member comprises a first driver and a first push rod provided at a drive end of the first driver, the first push rod having a first contact surface; The lock bolt is provided with a second contact surface; 16. The door lock of claim 15, wherein the first driver drives the lock bolt by abutment of the first contact surface and the second contact surface.

17. 2. The door lock of claim 1, wherein the lock tongue has a limit position, and when the lock bolt moves to the limit position of the lock tongue, the lock bolt limits the movement of the lock tongue, and when the lock bolt moves away from the limit position of the lock tongue, the lock bolt does not limit the movement of the lock tongue.

18. a first guide surface is provided on the lock bolt, and when the lock bolt is in the first restraining position but the lock tongue is disengaged from the lock cylinder, the lock tongue abuts against the first guide surface to drive the movement of the lock bolt; and / or wherein the lock bolt is provided with a second guide surface, and when the lock bolt is in the first restraining position but the lock tongue is inserted into the lock cylinder, the lock tongue abuts against the second guide surface to drive the movement of the lock bolt.

19. A door lock as described in claim 1, wherein, in the process of inserting the lock tongue into the lock cylinder, the lock tongue acts on the lever to rotate the rotating arm so that the locking claw locks the lock tongue, and in the process of removing the lock tongue from the lock cylinder, the lock tongue acts on the locking claw to rotate the rotating arm so that the locking claw releases the lock tongue.

20. the first driving member is used to drive the lock bolt under a preset condition; 10. The door lock of claim 1, wherein the first driver of the first drive member is a wax motor.

21. A dishwasher comprising a machine body, a door body, and the door lock according to any one of claims 1 to 20, wherein one of the lock tongue and the lock cylinder is provided on the door body, and the other is provided on the machine body.

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