Door lock and dishwasher

Abstract

The application discloses a door lock and a dishwasher. The door lock comprises a lock bolt, a lock cylinder, a lock plug, a constraint mechanism and a driving part. The lock cylinder is used for locking or releasing the lock bolt. The constraint mechanism is provided with a first constraint position and a second constraint position. When the lock plug is located at the first constraint position, the lock plug limits the movement of the lock bolt or the lock cylinder. When the lock plug is located at the second constraint position, the lock plug does not limit the movement of the lock bolt or the lock cylinder. The driving part is used for driving the lock plug to move away from the first constraint position so that the lock plug reaches the second constraint position, or is used for driving the lock plug to move away from the second constraint position so that the lock plug reaches the first constraint position. The lock bolt is used for locking the lock bolt or the lock cylinder, so that the lock bolt and the lock cylinder can be prevented from being separated by being misoperated. The constraint mechanism is provided, the driving part does not need to be kept in the powered state for a long time, power consumption is saved, and the door lock is safer and more reliable.

Description

Technical Field

[0001] This application relates to the field of door lock technology, and in particular to a door lock and a dishwasher. Background Technology

[0002] A dishwasher's washing cycle includes pre-washing, rinsing, and drying. The rinsing process is a high-temperature washing stage, with temperatures reaching up to 80°C, which can thoroughly clean even hard-to-clean residues such as grease. Summary of the Invention

[0003] This application aims to at least partially address the technical problems in the related art. To this end, this application proposes a door lock that prevents accidental unlocking by the user.

[0004] To achieve the above objectives, this application discloses a door lock, comprising:

[0005] Locking tongue;

[0006] Lock cylinder, used to lock or release the bolt;

[0007] Bolt;

[0008] The restraint mechanism has a first restraint position and a second restraint position. When the bolt is in the first restraint position, the bolt restricts the movement of the bolt tongue or the lock cylinder. When the bolt is in the second restraint position, the bolt does not restrict the movement of the bolt tongue or the lock cylinder.

[0009] A driving member, the driving member being used to drive the bolt away from the first constraint position so that the bolt reaches the second constraint position, or to drive the bolt away from the second constraint position so that the bolt reaches the first constraint position.

[0010] In some embodiments of this application, when the bolt is in the second constraint position, the bolt has a tendency to move from the second constraint position toward the first constraint position.

[0011] In some embodiments of this application, during the process of the driving member driving the bolt to disengage from the second constraint position, the driving member resets, and the bolt reaches the first constraint position under the action of the movement trend.

[0012] In some embodiments of this application, during the process of the driving member driving the bolt to disengage from the first constraint position, the driving member resets, and the bolt reaches the second constraint position under the action of the movement trend.

[0013] In some embodiments of this application, the bolt is provided with an elastic element, and when the bolt is in the second constraint position, the elastic element exerts a force on the bolt to make the bolt have a tendency to move from the second constraint position toward the first constraint position;

[0014] The driving member is used to drive the bolt away from the second constraint position and the bolt reaches the first constraint position under the action of the elastic member, or to drive the bolt away from the first constraint position and the bolt reaches the second constraint position under the action of the elastic member.

[0015] In some embodiments of this application, the elastic element is compressed to generate a thrust on the bolt in the second constrained position.

[0016] In some embodiments of this application, the direction in which the bolt disengages from and inserts into the lock cylinder is taken as the first direction, and the direction perpendicular to the first direction is taken as the second direction. The bolt and the elastic element are arranged sequentially on one side of the bolt in the second direction.

[0017] In some embodiments of this application, the bolt is provided with a movable limiting rod, and the bolt is constrained to the first constraint position or the second constraint position by the limiting rod;

[0018] The constraint mechanism has a first path and a second path, which form a loop. The limiting rod can move from the second constraint position to the first constraint position along the first path, or from the first constraint position to the second constraint position along the second path.

[0019] In some embodiments of this application, the limiting rod includes a rod body, a first bending body is provided along a first end of the rod body, and a second bending body is provided along a second end of the rod body. The bending directions of the second bending body and the first bending body are opposite to those of the rod body. The first bending body is connected to the locking bolt, and the second bending body is movably connected to the restraint mechanism.

[0020] In some embodiments of this application, the constraint mechanism includes:

[0021] A first stop block, the first stop block having a notch, the notch forming the second constraint position;

[0022] The second stop and the first stop are arranged alternately to form a first opening and a second opening that communicate with the notch;

[0023] The first guide groove is located on one side of the first stop and is connected to the first through port;

[0024] The second guide groove is located on the other side of the first stop and is connected to the second opening. The second guide groove is also connected to the first guide groove and the connection point constitutes the first constraint position. The first guide groove and the second guide groove are arranged together around the first stop.

[0025] The first port and the first guide groove constitute the first path, and the second guide groove and the second port constitute the second path.

[0026] In some embodiments of this application, the first stop and the second stop are arranged sequentially in the direction from the first constraint position to the second constraint position. The second stop is provided with a first guide surface. The first opening is formed between the first guide surface and the first stop. The first guide surface is located in the direction in which the limiting rod disengages from the recess. During the process of the limiting rod disengaging from the recess, the limiting rod touches the first guide surface to pass through the first opening and slide into the first guide groove.

[0027] In some embodiments of this application, the first guide surface protrudes from the first guide groove beyond the first stop, so that after the limiting rod passes through the first opening and slides into the first guide groove, it can move along the first guide groove to the first constraint position as the bolt moves, passing over the first opening.

[0028] In some embodiments of this application, the first stop is provided with a second guide surface, which is located in the direction in which the limiting rod is disengaged from the first constraint position. During the process of the limiting rod disengaging from the first constraint position, the limiting rod touches the second guide surface and moves along the second guide groove.

[0029] In some embodiments of this application, the second guide groove is provided with a third guide surface, and the first stop and the third guide surface are arranged sequentially in the direction from the first constraint position to the second constraint position. During the process of the limiting rod disengaging from the first constraint position, the limiting rod touches the third guide surface and moves to the second constraint position by following the bolt through the second passage.

[0030] In some embodiments of this application, the driving direction of the driving member intersects with the movement direction of the locking bolt.

[0031] In some embodiments of this application, the driving member includes a driver and a push rod disposed at the driving end of the driver, the push rod having a first contact surface;

[0032] The bolt is provided with a second contact surface;

[0033] The driver abuts against the first contact surface and the second contact surface to drive the locking bolt.

[0034] In some embodiments of this application, the bolt has a limiting position. When the bolt moves to the limiting position of the bolt, the bolt restricts the movement of the bolt. When the bolt leaves the limiting position of the bolt, the bolt does not restrict the movement of the bolt.

[0035] In some embodiments of this application, the bolt is provided with a first guide surface, and when the bolt is in the first constrained position and the bolt tongue is disengaged from the lock cylinder, the bolt tongue and the first guide surface abut against each other to drive the bolt to move.

[0036] In some embodiments of this application, the bolt is provided with a second guide surface, and when the bolt is in the first constrained position and the bolt is inserted into the lock cylinder, the bolt and the second guide surface abut against each other to drive the bolt to move.

[0037] In some embodiments of this application, the lock cylinder is provided with a rotating arm, the rotating arm is provided with a pawl, a lever and a connecting rod, the pawl, the lever and the connecting rod are intersecting and a rotation axis is provided at the intersection, and the rotating arm can rotate around the rotation axis;

[0038] During the process of the bolt being inserted into the lock cylinder, the bolt acts on the lever to rotate the rotating arm, so that the pawl locks the bolt; during the process of the bolt disengaging from the lock cylinder, the bolt acts on the pawl to rotate the rotating arm, so that the pawl releases the bolt.

[0039] The connecting rod has a limiting position. When the bolt moves to the limiting position of the connecting rod, the bolt restricts the movement of the rotating arm to restrict the movement of the lock cylinder. When the bolt leaves the limiting position of the connecting rod, the bolt does not restrict the movement of the rotating arm to not restrict the movement of the lock cylinder.

[0040] In some embodiments of this application, the driving member is used to drive the locking bolt under preset conditions.

[0041] In some embodiments of this application, the driver of the driving element is a wax motor.

[0042] This application also discloses a dishwasher, including a body, a door, and a door lock of any of the above embodiments, wherein one of the latch and the lock cylinder is disposed on the door and the other is disposed on the body.

[0043] The technical solution of this application locks the bolt or the lock cylinder by setting a bolt, which can prevent the bolt and the lock cylinder from being accidentally separated. By setting a constraint mechanism, the driving component does not need to be kept in a powered state for a long time, saving power and making it safer and more reliable. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram showing the lock tongue and lock cylinder of a door lock in a locked state in some embodiments of this application;

[0046] Figure 2 For this Figure 1 Enlarged view shown by the dashed line in the middle;

[0047] Figure 3 This is a schematic diagram showing the lock tongue and lock cylinder of a door lock in a separated state in some embodiments of this application;

[0048] Figure 4 This is a schematic diagram showing the state of the door lock bolt moving from the first constraint position to the second constraint position in some embodiments of this application;

[0049] Figure 5 for Figure 4 Enlarged view shown by the dashed line in the middle;

[0050] Figure 6 for Figure 4 Enlarged view shown by the dashed line (the dashed line with arrows indicates the movement path of the limit rod);

[0051] Figure 7 This application provides schematic diagrams illustrating the state of the door lock bolt moving from the second constraint position to the first constraint position in some embodiments.

[0052] Figure 8 for Figure 7 Enlarged view shown by the dashed line in the middle;

[0053] Figure 9 for Figure 7 Enlarged view shown by the dashed line (the dashed line with arrows indicates the movement path of the limit rod);

[0054] Figure 10 This is a schematic diagram showing the bolt of a door lock in a locked state in some embodiments of this application;

[0055] Figure 11 This is an exploded view of the door lock structure in some embodiments of this application;

[0056] Figure 12 for Figure 11 Enlarged view shown by the dashed line in the middle;

[0057] Figure 13 The following are schematic diagrams of the drive element and locking bolt structure in some embodiments of this application;

[0058] Figure 14 This is a schematic diagram showing the bolt of a door lock in a locked state in some embodiments of this application;

[0059] Figure 15 for Figure 14 Enlarged view shown by the dashed line in the middle;

[0060] Figure 16 This is a schematic diagram of the limiting rod 330 of the door lock in some embodiments of this application.

[0061] Explanation of icon numbers:

[0062] Locking tongue 100, rod body 110, locking protrusion 120, convex arc surface 121, first locking groove 130, second locking groove 140;

[0063] Lock cylinder 200, rotating arm 210, connecting rod 211, lever 212, pawl 213, compression spring 220, rotating rod 230, spring 231;

[0064] Bolt 310, first guide surface 311, second guide surface 312, second contact surface 313, through hole 314, through opening 315, elastic element 320, limit rod 330, rod body 331, first bending body 332, second bending body 333, micro switch 340 / 350;

[0065] The constraint mechanism 400 includes a first stop 410, a notch 411, a second guide surface 412, a second stop 420, a first through-hole 421, a second through-hole 422, a first guide surface 423, a first guide groove 430, a second guide groove 440, a third guide surface 441, a first path 450, and a second path 460.

[0066] Drive component 500, driver 510, push rod 520, first contact surface 521;

[0067] Upper shell 610, lower shell 620.

[0068] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0069] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0070] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0071] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0073] Some household appliances, such as dishwashers, washing machines, microwave ovens, and ovens, have door locks that lock or unlock the door. Taking a dishwasher as an example, a dishwasher is a device that automatically cleans dishes. Generally, a dishwasher consists of a main body and a door. The main body has a washing chamber containing a dish rack where dishes are placed. The dish rack can be pulled out or pushed into the washing chamber. The door is used to close the washing chamber. When the washing chamber is closed, the door is locked to the main body by a door lock. At this time, the washing or drying process can proceed within the washing chamber. When the door needs to be opened, the user pulls the door, disengaging the door lock and opening the washing chamber. In other words, this type of door lock is a device that can lock and unlock under external force. This leads to a risk of burns if the dishwasher, especially a child, accidentally opens the door during high-temperature operations. Therefore, this application proposes a door lock that locks the door to prevent or deter accidental unlocking by the user.

[0074] This application uses a dishwasher as an example to illustrate the door lock. It is understood that the door lock in this application can also be used for other household appliances or some devices that require door locks to lock the door, such as the washing machine and microwave oven mentioned above.

[0075] like Figure 1 As shown, a door lock includes a bolt 100, a lock cylinder 200, a bolt 310, a restraint mechanism 400, and a drive component 500. In some embodiments, the bolt 100 can be disposed on the door body, and the lock cylinder 200 can be disposed on the mechanism body. In other embodiments, the bolt 100 can be disposed on the mechanism body, and the lock cylinder 200 can be disposed on the door body. The bolt 100 and the lock cylinder 200 can be arranged according to actual needs. The bolt 100 is a structure that cooperates with the lock cylinder 200 to achieve locking or unlocking. They can separate or close under the action of force. For example, when the user pulls the door to open, the bolt 100 and the lock cylinder 200 separate; when the user pushes the door to close, the bolt 100 and the lock cylinder 200 lock. The specific form of the bolt 100 and the lock cylinder 200 can be selected according to the actual situation. In this embodiment, the bolt 100 is disposed on the door body and the lock cylinder 200 is disposed on the mechanism body as an example for explanation.

[0076] Generally, the latch 100 can be made of metal materials, such as cast iron or aluminum, and has high strength. The door typically has an inner door body and an outer door body. The top of the inner door body has a mounting position, and the latch 100 is fixed to this mounting position using threaded fasteners. Alternatively, the latch 100 can be formed by stamping on the top of the door body. The latch 100 moves with the door body. When the door needs to be closed, the latch 100 inserts into the lock cylinder 200 along with the door body, thus being locked by the lock cylinder 200. When the door needs to be opened, the latch 100 disengages from the lock cylinder 200 along with the door body. It is understandable that when the bolt 100 is inserted into the lock cylinder 200, the lock cylinder 200 must perform a corresponding movement to lock the bolt 100 in order to lock it. The same applies when the bolt 100 is disengaged from the lock cylinder 200; the lock cylinder 200 must perform a corresponding movement to release the bolt 100. In other words, the lock cylinder 200 is active when locking or releasing the bolt 100.

[0077] As such, users can open and close the door by pulling or pushing it. However, if the door is accidentally opened while the dishwasher is in operation, it could pose a danger. Therefore, a bolt 310 is provided, which automatically restricts the movement of the latch 100 or the cylinder 200 when the dishwasher reaches certain operating conditions, thereby preventing the latch 100 and the cylinder 200 from separating.

[0078] Specifically, when the dishwasher receives a signal that it needs to restrict the lock cylinder 200 or the bolt 100, the drive unit 500 drives the bolt 310 to move to restrict the movement of the bolt 100 or the lock cylinder 200. The bolt 100 cannot open with the door, that is, the bolt 100 and the lock cylinder 200 cannot separate, and the door remains closed. This restriction is to apply great resistance to the bolt 100 or the lock cylinder 200, thereby preventing the lock cylinder 200 and the bolt 100 from separating when the door is forcibly pulled open, or in other words, it can greatly increase the resistance to opening the door so that the user can recognize that the door cannot be opened at this time, thereby preventing the door from being opened due to the separation of the bolt 100 and the lock cylinder 200. Different bolts 100 and lock cylinders 200 have different specific structures, which makes it possible to lock or release the bolts 100 and lock cylinders 200 in multiple ways. However, the bolts 100 must move with the door body, as long as the bolts 310 can restrict the bolts 100 from moving with the door body.

[0079] By setting a constraint mechanism 400, which has two constraint positions—a first constraint position and a second constraint position—the bolt 310 can be in either position. When the bolt 310 is in the first constraint position, it is restricted and cannot move, thus restricting the bolt tongue 100 or the lock cylinder 200. When the bolt 310 is in the second constraint position, it is also restricted and cannot move, but it does not restrict the bolt tongue 100 or the lock cylinder 200. This means that the drive component 500 only needs to drive the bolt 310 to either the first or second constraint position, after which it can be de-energized and reset. The bolt 310 remains stationary under the action of the constraint mechanism 400, eliminating the need for prolonged power supply to the drive component 500, saving power, reducing heat generation, and improving safety.

[0080] It is understandable that the aforementioned driving component 500 driving the bolt 310 to disengage from the first constraint position so that the bolt 310 reaches the second constraint position includes multiple situations. That is, after the driving component 500 drives the bolt 310 to disengage from the first constraint position, the bolt 310 reaches the second constraint position under the action of other components. Alternatively, the driving component 500 can drive the bolt 310 to move from the first constraint position to the second constraint position.

[0081] Similarly, the aforementioned driving component 500 driving the bolt 310 to disengage from the second constraint position so that the bolt 310 reaches the first constraint position includes several situations, namely, after the driving component 500 drives the bolt 310 to disengage from the second constraint position, the bolt 310 reaches the first constraint position under the action of other components; or the driving component 500 driving the bolt 310 to move from the second constraint position to the first constraint position.

[0082] Furthermore, such as Figure 1 As shown, a micro switch 340 can be provided on the movement path of the bolt 310. When the bolt 310 moves from the second constraint position to the first constraint position, the bolt 310 can touch the micro switch 340, which generates a signal, thus displaying a locked state on the dishwasher. When the bolt 310 moves from the first constraint position to the second constraint position, the bolt 310 separates from the micro switch 340, the signal of the micro switch 340 is disconnected, thus displaying an unlocked state on the dishwasher.

[0083] As can be seen from the above, the latch 100 and the lock cylinder 200 constitute a lock structure, which can normally realize the opening and closing of the door. When the bolt 310 is locked, it is equivalent to adding a mechanical protection device to the lock structure formed by the latch 100 and the lock cylinder 200. By restraining the latch 100 or the lock cylinder 200 through the bolt 310, it can effectively prevent the door from being forcibly pulled open, or greatly increase the resistance to pulling the door open, thus avoiding danger. For example, when the dishwasher is in the high-temperature rinsing process, the spray arms in the washing chamber of the dishwasher are rotating and spraying high-temperature and high-pressure water. If the door is forcibly pulled open at this time, the high-temperature and high-pressure water can easily be sprayed out of the dishwasher, causing injury to the user. However, the bolt 310 effectively avoids this situation.

[0084] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments of this application, when the bolt 310 is in the second constraint position, that is, when the bolt 310 does not restrict the bolt tongue 100 or the lock cylinder 200, the bolt 310 has a tendency to move from the second constraint position to the first constraint position. This tendency means that the bolt 310 is subjected to a driving force that can drive the bolt 310 to move, but currently the bolt 310 is obstructed and cannot move. The bolt 310 has a tendency to move towards the first constraint position, that is, when the bolt 310 is in the second constraint position, it has a tendency to move towards the position that restricts the bolt tongue 100 or the lock cylinder 200. In this way, after the bolt 310 is released from the second constraint position, it can reach the first constraint position under the action of this driving force, realizing rapid locking, thereby improving the locking efficiency of the bolt 310. This tendency to move can be achieved in a variety of ways, such as by causing the bolt 310 to fall downwards by gravity, or by magnetizing the bolt 310 and using a magnet or electromagnet to attract the bolt 310.

[0085] It is understandable that after the driving component 500 drives the bolt 310 to disengage from the second constraint position, the bolt 310 can move not only under the influence of the motion tendency but also under the action of the driving component 500. That is, the driving force that generates the motion tendency of the bolt 310 and the driving force of the driving component 500 are superimposed, causing the bolt 310 to move quickly. However, in some embodiments of this application, the superposition of the driving force of the driving component 500 is not used. Specifically, the driving component 500 moves, driving the bolt 310 to disengage from the second constraint position. During this process, the driving component 500 is de-energized and resets, and the bolt 310 smoothly reaches the first constraint position under the aforementioned motion tendency. In other words, the function of the driving component 500 is to move the bolt 310 away from the second constraint position, and then the driving component 500 can be de-energized and reset. Thus, the driving component 500 does not need to move the bolt 310 for a long time. Figure 8 and Figure 9 As shown, under the action of the constraint mechanism 400, after the drive member 500 drives the bolt 310 to move to the left to the maximum position to disengage from the second constraint position, the drive member 500 can be reset. Under the action of the driving force that generates the movement tendency, the bolt 310 moves to the right to the first constraint position, thus preventing the drive member 500 from being energized for a long time.

[0086] The same applies to bolt 310 disengaging from the first constraint position, such as... Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of this application, the driving member 500 actuates, driving the bolt 310 to disengage from the first constraint position. During this process, the driving member 500 is de-energized and reset, and the bolt 310 smoothly reaches the second constraint position under the aforementioned movement trend. Under the action of the constraint mechanism 400, the driving member 500 drives the bolt 310 to move to the left to its maximum position (this maximum position may or may not be the same as the aforementioned maximum position), and then the driving member 500 is de-energized and reset. Under the driving force that generates the movement trend, the bolt 310 moves to the right to the second constraint position, avoiding prolonged energization of the driving member 500.

[0087] like Figures 1 to 9 As shown, in some embodiments of this application, the bolt 310 is provided with an elastic element 320. When the bolt 310 is located in the second constraint position of the constraint mechanism 400, the elastic element 320 can generate a force on the bolt 310, thereby causing the bolt 310 to have a tendency to move from the second constraint position toward the first constraint position.

[0088] The driving member 500 is used to drive the bolt 310 away from the second constraint position, and the bolt 310 reaches the first constraint position under the action of the elastic member 320, or to drive the bolt 310 away from the first constraint position, and the bolt 310 reaches the second constraint position under the action of the elastic member 320.

[0089] Specifically, in this embodiment, the movement tendency of the bolt 310 originates from the elastic element 320, which can be a pull rope, a tension spring, etc. The driving force generated by the elastic element 320 simplifies the structure for realizing the movement tendency of the bolt 310. The bolt 310 can have a movement tendency solely through a mechanical structure, avoiding the use of electronic components.

[0090] When the bolt 310 needs to be locked, the drive member 500 actuates the bolt 310. After the bolt 310 disengages from the second constraint position, the drive member 500 resets. The drive member 500 no longer obstructs the bolt 310, and the elastic member 320 extends, thereby moving the bolt 310 to the first constraint position. When the bolt 310 needs to be unlocked, the drive member 500 actuates the bolt 310, causing the bolt 310 to disengage from the first constraint position and move to the left. The drive member 500 resets, and the elastic member 320 extends, thereby moving the bolt 310 to the second constraint position.

[0091] In some embodiments of this application, such as Figures 1 to 9As shown, the elastic element 320 compresses to generate a thrust on the bolt 310 in the second constrained position. Because the bolt 310 is generated by the compression of the elastic element 320, it has a tendency to move; that is, the movement directions of the elastic element 320 and the bolt 310 are the same. When the elastic element 320 compresses to the left, the bolt 310 moves to the left; when the elastic element 320 compresses to the right, the bolt moves to the right. This allows the elastic element 320 and the latch 100, or the elastic element 320 and the lock cylinder 200, to be distributed on both sides of the bolt 310, facilitating the arrangement of components and allowing the entire door lock to be made thinner. If the elastic element 320 is stretched to exert a pulling force on the bolt 310, causing the bolt 310 to have a tendency to move, this is also possible. However, the elastic element 320 needs to be arranged on the same side of the bolt 310 as the bolt 100 or the lock cylinder 200. In order to avoid interference between the elastic element 320 and the bolt 100 or the lock cylinder 200, the elastic element 320 and the lock cylinder 200 or the bolt 100 need to be distributed on different motion planes. This will increase the thickness of the door lock or add an additional transmission mechanism, which makes the whole door lock more complicated.

[0092] Furthermore, such as Figure 1 As shown, in some embodiments of this application, the direction in which the latch 100 disengages from and is inserted into the lock cylinder 200 is designated as the first direction (front-back direction in the diagram), and the direction perpendicular to the first direction is designated as the second direction (left-right direction in the diagram). The bolt 310 and the elastic element 320 are arranged sequentially on one side of the latch 100 in the second direction. Specifically, one end of the elastic element 320 is connected to one end of the bolt 310. Various connection methods exist, such as adhesive bonding, welding, or a connecting post at one end of the bolt 310, with one end of the elastic element 320 fitted onto this connecting post, thus achieving the connection between the elastic element 320 and the bolt 310. The other end of the elastic element 320 is fixed, as mentioned below, by fixing the other end of the elastic element 320 to the lower housing 620. A corresponding connecting post is also provided on the lower housing 620, with the other end of the elastic element 320 fitted onto the connecting post of the lower housing 620. In this way, the elastic element 320 can directly drive the bolt 310 to move, and the movement of the bolt 310 can be achieved without the need for an intermediate part. This makes the bolt 310 thinner and lighter, and does not affect the bolt tongue 100 and the lock cylinder 200.

[0093] To facilitate restricting the bolt to a first or second constraint position, in some embodiments of this application, such as... Figures 4 to 9 As shown, the bolt 310 is provided with a limiting rod 330 that can move relative to the bolt 310, and the bolt 310 can be constrained to the second constraint position or the first constraint position by the limiting rod 330.

[0094] The constraint mechanism 400 has a first path 450 and a second path 460, which form a loop. The limiting rod 330 can move from the second constraint position to the first constraint position along the first path 450, or from the first constraint position to the second constraint position along the second path 460.

[0095] Specifically, the limiting rod 330 is a component that can constrain the bolt 310 to a first constraint position or a second constraint position. Due to the setting of the limiting rod 330, even if the bolt 310 has a tendency to move, it can remain stationary due to the constraint of the first or second constraint position. That is, the structural form of the limiting rod 330 can be various, and is not limited here, as long as it can achieve the purpose of restricting the bolt 310. For example, such as... Figure 1 and Figure 16 As shown, the limiting rod 330 includes a rod body 331, which is higher than the first stop 410 and the second stop 420 of the constraint mechanism 400 mentioned below. A first bending body 332 is provided along the first end of the rod body 331, and a second bending body 333 is provided along the second end of the rod body 331. The bending directions of the second bending body 333 and the first bending body 332 are opposite to those of the rod body 331. The first bending body 332 is movably connected to the locking bolt 310 through the through hole 314, and the second bending body 333 is movably connected to the constraint mechanism 400. That is, the second bending body 333 can move between the first constraint position and the second constraint position through the first path 450 or the second path 460.

[0096] The limiting rod 330 is movably configured relative to the locking bolt 310, allowing it to flexibly follow the movement of the locking bolt 310 and change position accordingly, thus enabling movement between the first constraint position and the second constraint position. As shown in the figure, the locking bolt 310 has a through hole 314. One end of the limiting rod 330 is inserted into the through hole and can rotate, while the other end of the limiting rod 330 moves along the first path 450 and the second path 460 between the first constraint position and the second constraint position. When the limiting rod 330 moves, it can rotate around the through hole 314 accordingly. By setting the first path 450 and the second path 460, when the limit rod 330 moves, the first path 450 and the second path 460 are equivalent to constraining the limit rod 330, making the movement of the limit rod 330 more reliable and ensuring that the limit rod 330 can move smoothly between the first constraint position and the second constraint position. Moreover, the first path 450 and the second path 460 form a loop, thereby maximizing the simplification of the structure of the constraint mechanism 400.

[0097] Furthermore, in some embodiments of this application, such as Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 11 and Figure 12 As shown, the constraint mechanism 400 includes:

[0098] The first stop 410 is provided with a notch 411, and the notch 411 constitutes the second constraint position;

[0099] The second stop 420 is spaced apart from the first stop 410 to form a first opening 421 and a second opening 422 that communicate with the notch 411;

[0100] The first guide groove 430 is disposed on one side of the first stop 410 and is connected to the first through port 421;

[0101] The second guide groove 440 is disposed on the other side of the first stop 410 and communicates with the second through port 422. The second guide groove 440 is also connected to the first guide groove 430, and the connection between the two forms a first constraint position. The second guide groove 440 and the first guide groove 430 are arranged together around the first stop 410.

[0102] The first port 421 and the first guide groove 430 constitute the first path 450, and the second guide groove 440 and the second port 422 constitute the second path 460.

[0103] Specifically, a constraint mechanism 400 can be integrally formed on the lower housing 620 mentioned below. The first stop 410 has a V-shaped or U-shaped structure, and the notch 411 formed by the V-shaped or U-shaped structure constitutes the second constraint position. The notch 411 faces the left side as shown in the figure. When the dishwasher receives a signal that the bolt 310 needs to be locked, the drive member 500 drives the bolt 310 to move. The bolt 310 moves to the left from the notch 411. During this process, the elastic member 320 will be compressed. The bolt 310 drives the limiting rod 330 to pass through the first through-hole 421 and slide into the first guide groove 430. Then, the drive member 500 resets, and under the action of the elastic member 320, the bolt 310 moves to the right until the limiting rod 330 moves to the first constraint position. At this time, the bolt 310 locks the bolt tongue 100 or the lock cylinder 200.

[0104] When the dishwasher receives a signal requiring the bolt 310 to unlock, the drive member 500 actuates the bolt 310, causing it to move to the left and disengage from the first constraint position. During this movement, the elastic member 320 is compressed, and then the drive member 500 resets. Under the action of the elastic member 320, the bolt 310 moves to the right, thereby causing the limiting rod 330 to pass through the second opening 422 and move to the notch 411 (the second constraint position). At this time, the bolt 310 is no longer restricting the latch 100 or the lock cylinder 200. In this application example, as mentioned below, the upper housing 610 and lower housing 620 have a constraint mechanism 400 directly formed on the lower housing 620, eliminating the need for an additional constraint mechanism 400 and facilitating the restriction of the bolt 310.

[0105] Furthermore, such as Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in order to facilitate the smooth entry of the limiting rod 330 into the first guide groove 430 when it disengages from the second constraint position, in some embodiments, the first stop 410 and the second stop 420 are arranged sequentially in the direction from the first constraint position to the second constraint position (from right to left). The second stop 420 is provided with a first guide surface 423, and a first through-hole 421 is formed between the first guide surface 423 and the first stop 410. The first guide surface 423 is arranged in the direction in which the limiting rod 330 disengages from the recess 411 (from right to left in the figure). During the process of the limiting rod 330 disengaging from the recess 411, the limiting rod 330 touches the first guide surface 423 and passes through the first through-hole 421 to slide into the first guide groove 430. Since the first path 450 and the second path 460 form a loop, in order to prevent the limiting rod 330 from entering the second guide groove 440 when it leaves the notch 411, the first guide surface 423 is designed so that the limiting rod 330 can easily enter the first guide groove 430.

[0106] Furthermore, to prevent the limiting rod 330 from re-entering the second constraint position after it has disengaged from the second constraint position and is moving towards the first constraint position, it must be prevented from re-entering the second constraint position through the first opening 421. Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in some embodiments of this application, the first guide surface 423 protrudes toward the first guide groove 430 relative to the first stop 410, so that after the limiting rod 330 passes through the first opening 421 and smoothly slides into the first guide groove 430, it can move past the first opening 421 with the movement of the locking bolt 310, thereby moving along the first guide groove 430 to the first constraint position.

[0107] Specifically, the first guide surface 423 is inclined and protrudes further forward relative to the first stop 410. That is, on the path of the limit rod 330 moving towards the first constraint position along with the bolt 310, the first stop 410 and the second stop 420 are not collinearly arranged, forming a certain misalignment. When the dishwasher receives a signal requiring the bolt 310 to lock, the drive member 500 drives the bolt 310 to move. The bolt 310 moves to the left from the notch 411, the elastic member 320 is compressed, and the limiting rod 330 passes through the first through-hole 421 and slides into the first guide groove 430. Then the drive member 500 resets, and the bolt 310 moves to the right under the action of the elastic member 320. Because the second stop 420 forms a more prominent first guide surface 423, the limiting rod 330 can pass through the first through-hole 421 as the bolt 310 moves until the limiting rod 330 moves to the first constraint position. At this time, the bolt 310 is in the state of locking the bolt tongue 100 or the lock cylinder 200. In this embodiment, by setting the first guide surface 423, the limiting rod 330 will not re-enter the notch 411 in the opposite direction as it moves with the bolt 310 to the first constraint position.

[0108] like Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in order to prevent the limiting rod 330 from moving in the opposite direction along the first path 450 during the process of moving from the first constraint position to the second constraint position, in some embodiments of this application, the first stop 410 is provided with a second guide surface 412. The second guide surface 412 is located in the direction in which the limiting rod 330 leaves the first constraint position (from right to left in the figure). During the process of the limiting rod 330 being driven to leave the first constraint position, the limiting rod 330 touches the second guide surface 412 and moves along the second guide groove 440.

[0109] It is understandable that if the first constraint position and the second path 460 are at least partially collinear, then the second guide surface 412 does not need to be provided on the first stop 410, and the limit rod 330 can move along the second path 460 when it is disengaged from the first constraint position.

[0110] Furthermore, such as Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, the second guide groove 440 is provided with a third guide surface 441. The first stop 410 and the third guide surface 441 are arranged sequentially in the direction from the first constraint position to the second constraint position (from right to left in the figure). During the process of the limiting rod 330 disengaging from the first constraint position, the limiting rod 330 touches the third guide surface 441, thereby following the locking bolt 310 through the second passage 422 to move to the second constraint position. Specifically, on the path along which the limiting rod 330 moves toward the second constraint position following the locking bolt 310, the first stop 410 and the third guide surface 441 are not collinearly arranged, forming a certain misalignment. Thus, when the dishwasher receives a signal to unlock, the drive member 500 drives the locking bolt 310 to reset (move to the left), and the locking bolt 310 drives the limiting rod 330 to disengage from the first constraint position. The limiting rod 330 moves along the second path 460. When it reaches the predetermined position, the drive member 500 resets, and the locking bolt 310 moves to the right under the drive of the elastic member 320. Due to the provision of the third guide surface 441, the limiting rod 330 can smoothly pass through the second opening 422 and move into the second constraint position without moving in the opposite direction along the second path 460.

[0111] As can be seen from the above, by setting the constraint mechanism 400, when the bolt 310 needs to be locked, the driving member 500 drives the bolt 310 to move to the left. The bolt 310 drives the limiting rod 330 to disengage from the notch 411 and touch the first guide surface 423, thereby sliding into the first guide groove 430. Then the driving member 500 resets, and the bolt 310 moves towards the first constraint position by passing through the first opening 421 under the action of the elastic member 320. When the bolt 310 needs to be unlocked, the drive unit 500 drives the bolt 310 to move to the left. The bolt 310 drives the limiting rod 330 to disengage from the first constraint position and touches the second guide surface 412 and moves along the second guide groove 440. During the movement, it touches the third guide surface 441 and crosses the second through-hole 421. Then the drive unit 500 resets, and the bolt 310, under the action of the elastic member 320, drives the limiting rod 330 to the second constraint position, i.e., the notch 411. Thus, the locking and unlocking process is completed.

[0112] like Figure 1 As shown, in some embodiments of this application, the driving direction of the drive member 500 (vertical direction in the figure) intersects with the movement direction of the bolt 310 (left-right direction in the figure). That is, the movement of the bolt 310 is a linear reciprocating movement, and the drive member 500 is also a linear reciprocating drive. This arrangement of the drive member 500 and the bolt 310 makes full use of space and avoids the door lock length process caused by the drive member 500 and the bolt 310 being set in the same direction, or the door lock thickness being too large due to overlapping arrangement.

[0113] Furthermore, such as Figure 1 , Figure 11 and Figure 13 In some embodiments of this application, the driving component 500 includes a driver 510 and a push rod 520 disposed at the driving end of the driver 510. The push rod 520 has a first contact surface 521, and the locking bolt 310 has a second contact surface 313. The driver 510 drives the locking bolt 310 by abutting against the first contact surface 521 and the second contact surface 313. Specifically, the driver 510 is a component that performs a corresponding action after being energized. The driver 510 can take various forms, such as a reciprocating driver, a rotary driver, etc., as long as it can realize the reciprocating drive of the push rod 520. In this embodiment, a reciprocating driver 510 is used as an example. The bolt 310 is mounted on the slide rail of the lower housing 620 mentioned below. The bolt 310 can reciprocate on the slide rail. The bolt 310 is provided with a through-hole 315, through which the push rod 520 can pass. A second contact surface 313 is provided in the through-hole 315. When the bolt 310 is in the second constraint position, the driver 510 drives the push rod 520. The push rod 520 extends so that the front end of the first contact surface 521 and the front end of the second contact surface 313 contact each other. As the push rod 520 extends, the bolt 310 moves to the left so that the limiting rod 330 is disengaged from the second constraint position. Then the driver 510 drives the push rod 520 to reset. Under the action of the elastic element 320, the bolt 310 moves to the right and drives the limiting rod 330 to the first constraint position. When the bolt 310 is in the first constrained position, the actuator 510 drives the push rod 520, which extends to bring the front end of the first contact surface 521 and the rear end of the second contact surface 313 into contact. As the push rod 520 extends, the bolt 310 moves to the left to disengage the limiting rod 330 from the first constrained position. Subsequently, the actuator 510 drives the push rod 520 to reset, and the bolt 310, under the action of the elastic element 320, moves the limiting rod 330 to the right to the second constrained position. Through the design of the first contact surface 521 and the second contact surface 313, power transmission can be achieved without a complex transmission mechanism.

[0114] In some embodiments of this application, the latch 100 is provided with a limiting position. When the bolt 310 moves to the limiting position of the latch 100, the bolt 310 restricts the movement of the latch 100. When the bolt 310 leaves the limiting position of the latch 100, the bolt 310 does not restrict the movement of the latch 100.

[0115] Specifically, when the locking bolt 310 needs to be locked, the dishwasher sends a signal, and the actuator 510 drives the locking bolt 310 to move to the limit position of the latch 100. When the locking bolt 310 is no longer needed, the actuator 510 drives the locking bolt 310 to reset. It can be understood that this limit position is the structure where the latch 100 and the locking bolt 310 cooperate, so that when the latch 100 moves, the locking bolt 310 can prevent the latch 100 from moving. For example, the limit position can be a slot structure, a through-hole structure, etc.

[0116] Specifically, such as Figure 1 and Figure 3 As shown, the latch 100 includes a rod 110 and a latching protrusion 120 located at the end of the rod 110. A first groove 130 and a second groove 140 are formed between the rod 110 and the latching protrusion 120. The first groove 130 constitutes the limiting position of the latch 100. As can be seen from the figure, the latch 100 includes a rod 110 and a latching protrusion 120 located at the end of the rod 110. The width of the latching protrusion 120 is slightly larger than the width of the rod 110. A first groove 130 and a second groove 140 are formed between the latching protrusion 120 and the rod 110. The latching protrusion 120 has a convex arc surface 121 facing the lock cylinder 200. The first slot 130 is formed in the direction in which the bolt 100 disengages from the lock cylinder 200. The first slot 130 is approximately right-angled. When the bolt 310 is driven by the driver 510 and extends into the first slot 130, the bolt 310 and the slot form a surface contact in the direction in which the bolt 100 disengages from the lock cylinder 200, and the contact surface is perpendicular to the direction in which the bolt 100 disengages from the lock cylinder 200. This greatly enhances the effect of the bolt 310 in obstructing the bolt 100 and effectively prevents the bolt 100 from being forcibly separated from the lock cylinder 200 under the action of external force (user pulling).

[0117] In some embodiments, such as Figure 14 and Figure 15As shown, the bolt 310 is provided with a first guide surface 311. When the bolt 310 is in the first constrained position and the bolt 100 is disengaged from the lock cylinder 200, the bolt 100 abuts against the first guide surface 311 to drive the lock to move. Alternatively, the bolt 310 is provided with a second guide surface 312. When the bolt 310 is in the first constrained position and the bolt 100 is inserted into the lock cylinder 200, the bolt 100 abuts against the second guide surface 312 to drive the bolt 310 to move. Specifically, there are situations where, for example, a malfunction in certain components causes the bolt 310 to remain in the first constrained position, requiring the user to forcibly open or close the door, or other situations requiring the door to be forcibly opened or closed. Therefore, by setting the first guide surface 311, which is inclined, even if the bolt 310 is locked, when the user needs to open the door and the force exceeds a certain critical point, the limiting position of the latch 100 will drive the bolt 310 to move through the first guide surface 311, thereby opening the door. At this time, the bolt 310 can move from the first constraint position to the second constraint position. Of course, the force required for this critical point needs to be set relatively large, so that the door can be opened even if the user accidentally opens it, and it can be opened in some special circumstances. The same applies to the second guide surface 312, which is also inclined. Even if the bolt 310 is locked, when the user needs to close the door and the force exceeds a certain critical point, the convex arc surface 121 of the latch 100 contacts the second guide surface 312, and the second guide surface 312 squeezes the bolt 310, thereby driving the bolt 310 to move, thus opening the door. At this time, the bolt 310 can move from the first constraint position to the second constraint position.

[0118] like Figure 1 and Figure 3 As shown, in some embodiments of this application, the lock cylinder 200 is provided with a rotating arm 210, the rotating arm 210 is provided with a pawl 213, a lever 212 and a connecting rod 211, the pawl 213, the lever 212 and the connecting rod 211 are intersected and a rotation axis is provided at the intersection, and the rotating arm 210 can rotate around the rotation axis.

[0119] During the process of the bolt 100 being inserted into the lock cylinder 200, the bolt 100 acts on the lever 212 to rotate the rotating arm 210 so that the pawl 213 locks the bolt 100; during the process of the bolt 100 being disengaged from the lock cylinder 200, the bolt 100 acts on the pawl 213 to rotate the rotating arm 210 so that the pawl 213 releases the bolt 100.

[0120] The lever 212 has a limit position. When the bolt 310 moves to the limit position of the connecting rod 211, the bolt 310 restricts the movement of the rotating arm 210 to restrict the movement of the lock cylinder 200. When the bolt 310 leaves the limit position of the connecting rod 211, the bolt 310 does not restrict the movement of the rotating arm 210 to not restrict the movement of the lock cylinder 200.

[0121] Specifically, the pawl 213, lever 212, and connecting rod 211 are integrally formed to form the rotating arm 210, which is rotatably arranged around the rotation axis. A compression spring 220 is provided at the end of the connecting rod 211. One extension end of the compression spring 220 is inserted into the end of the connecting rod 211 and is rotatably arranged with the end of the connecting rod 211. The other extension end of the compression spring 220 is inserted into the lower housing 620 mentioned below and is rotatably arranged with the lower housing 620. When the door is closed, the rotating arm 210 is in the first position. At this time, the compression spring 220 is in a deformed state or a non-compressed state. If the compression spring 220 is in a deformed state (taking the compressed state as an example), that is, the compression spring 220 has the ability to exert force on the rotating arm 210, and the rotating arm 210 is held in the first position. When the door is opened, the latch 100 exerts force on the pawl 213 through the latch 120, and then the entire rotating arm 210 rotates (clockwise) as the latch 100 moves. At this time, the compression spring 220 rotates (counterclockwise) under the action of the connecting rod 211 and is compressed until its maximum value. As the latch 100 moves and separates from the pawl 213, the compression spring 220 returns to its original deformation, thereby pushing the rotating arm 210 to remain in the second position. When the door is closed, the latch 100 exerts force on the lever 212 via the latch protrusion 120. Since the end face of the latch protrusion 120 is a convex arc surface 121, the contact area with the lever 212 is reduced, effectively lowering resistance. The entire rotating arm 210 rotates (counterclockwise) as the latch 100 moves. At this time, the compression spring 220 rotates (clockwise) under the action of the connecting rod 211211 and is compressed to its maximum value. As the latch 100 moves to the predetermined position, the pawl 213 engages in the second slot 140, and the compression spring 220 recovers its deformation, thereby pushing the rotating arm 210 to remain in the first position. The rotation plane of the rotating arm 210 and the rotation plane of the compression spring 220 are coplanar or parallel to each other, which is beneficial for improving the overall door lock to be thinner.

[0122] Furthermore, such as Figure 1 As shown, a rotating rod 230 is provided on the rotation path of the lever 212. When the latch 100 and the lock cylinder 200 are locked, the lever 212 rotates counterclockwise, actuating the rotating rod 230. The rotating rod 230 then pushes the spring 231 clockwise, compressing it and separating the rotating rod 230 from the micro switch 350. When the latch 100 and the lock cylinder 200 are disengaged, the lever 212 rotates clockwise, and the spring 231 pushes the rotating rod 230 counterclockwise, causing the rotating rod 230 to contact the button of the micro switch 350. With this configuration, the dishwasher can generate corresponding information output to the display screen when the latch 100 and the lock cylinder 200 are locked or disengaged.

[0123] The limiting position of link 211 functions similarly to the limiting position of latch 100; that is, by obstructing the limiting position of link 211, the movement of rotating arm 210 is prevented, thereby preventing the movement of latch 100. Figures 1 to 3As shown, the end of the connecting rod 211 forms the limiting position of the lock cylinder 200. The distance from this end to the rotation axis is equivalent to a relatively long lever arm, which is equivalent to greatly improving the blocking effect by using leverage.

[0124] In some embodiments of this application, the drive unit 500 is used to drive the locking bolt 310 under preset conditions. Specifically, the preset conditions can be set to a preset temperature. In a washing cycle, the dishwasher will successively perform pre-wash, rinse, and dry. Cold or warm water is usually used during the pre-wash, while hot water is used during the rinse. The preset conditions are designed to be the temperature value of the rinsing stage. When the dishwasher runs to the rinsing stage, its set washing sequence will control the drive unit 500 to drive the locking bolt 310 to lock, thus preventing the user from accidentally opening the door and causing injury. Understandably, the preset condition could also be designed to control whether the dishwasher's washing pump is operating. When the washing pump is operating, water will be ejected from the spray arm. During this operation, the drive unit 500 will control the locking bolt 310 to restrict the latch 100 or the lock cylinder 200, preventing accidental opening and injury regardless of the dishwasher's operating stage. Alternatively, a microswitch 340 could be installed, which, upon detecting the insertion of the latch 100, controls the locking bolt 310 to lock, thus ensuring the latch 100 and lock cylinder 200 are closed. For other appliances, such as washing machines, spin speed could be used as the preset condition; for ovens, temperature could be used.

[0125] Furthermore, the driver 510 of the drive unit 500 is a component that performs corresponding actions after being energized. Specifically, the driver 510 is a wax motor. The wax motor is a drive device that includes a thermistor mounted on 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 initial position. During operation, when the dishwasher receives a signal requiring the latch 310 to lock, the driver 510 is energized, thereby driving the latch 310 to move. The driver 510 can then reset, and the latch 310 is constrained in a first constraint position. When a signal requiring the latch 310 to unlock is received, the driver 510 is energized again, thereby driving the latch 310 to move. The driver 510 can then reset, and the latch 310 is constrained in a second constraint position.

[0126] In some embodiments of this application, such as Figure 11As shown, the door lock also includes an upper housing 610 and a lower housing 620. The upper housing 610 and the lower housing 620 are connected to form an accommodating space, in which the lock cylinder 200, bolt 310, and drive unit 500 are disposed. The upper housing 610 serves as a cover and is connected to the lower housing 620. The lower housing 620 has a notch for the bolt 100 to enter and exit. In this embodiment, the lock cylinder 200, bolt 310, and drive unit 500 are integrated into a single component by using the upper housing 610 and the lower housing 620, making it convenient to install in a dishwasher.

[0127] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A door lock, characterized in that, include: Locking tongue; Lock cylinder, used to lock or release the bolt; Bolt; The restraint mechanism has a first restraint position and a second restraint position. When the bolt is in the first restraint position, the bolt restricts the movement of the bolt tongue or the lock cylinder. When the bolt is in the second restraint position, the bolt does not restrict the movement of the bolt tongue or the lock cylinder. A driving member, the driving member being used to drive the bolt away from the first constraint position so that the bolt reaches the second constraint position, or to drive the bolt away from the second constraint position so that the bolt reaches the first constraint position; The constraint mechanism includes: A first stop block, the first stop block having a notch, the notch forming the second constraint position; The second stop is arranged alternately with the first stop to form a first opening and a second opening that communicate with the notch; The first guide groove is located on one side of the first stop and communicates with the first through-hole; The second guide groove is located on the other side of the first stop and communicates with the second through-hole. The second guide groove also communicates with the first guide groove, and the connection point constitutes the first constraint position. The first guide groove and the second guide groove are arranged together around the first stop.

2. The door lock according to claim 1, characterized in that, When the bolt is in the second constraint position, the bolt has a tendency to move from the second constraint position toward the first constraint position.

3. The door lock according to claim 2, characterized in that, During the process of the driving member driving the bolt to disengage from the second constraint position, the driving member resets, and the bolt reaches the first constraint position under the action of the movement trend.

4. The door lock according to claim 3, characterized in that, During the process of the driving member driving the bolt to disengage from the first constraint position, the driving member resets, and the bolt reaches the second constraint position under the action of the movement trend.

5. The door lock according to any one of claims 1 to 4, characterized in that, The bolt is provided with an elastic element. When the bolt is in the second constraint position, the elastic element exerts a force on the bolt so that the bolt has a tendency to move from the second constraint position toward the first constraint position. The driving member is used to drive the bolt away from the second constraint position and the bolt reaches the first constraint position under the action of the elastic member, or to drive the bolt away from the first constraint position and the bolt reaches the second constraint position under the action of the elastic member.

6. The door lock according to claim 5, characterized in that, The elastic element is compressed to generate a thrust on the bolt in the second constrained position.

7. The door lock according to claim 5, characterized in that, With the direction in which the bolt disengages from and inserts into the lock cylinder as the first direction, and the direction perpendicular to the first direction as the second direction, the bolt and the elastic element are arranged sequentially on one side of the bolt in the second direction.

8. The door lock according to claim 1, characterized in that, The bolt is provided with a movable limiting rod, and the bolt is constrained to the first constraint position or the second constraint position by the limiting rod; The constraint mechanism has a first path and a second path, which form a loop. The limiting rod can move from the second constraint position to the first constraint position along the first path, or from the first constraint position to the second constraint position along the second path.

9. The door lock according to claim 8, characterized in that, The limiting rod includes a rod body, a first bending body is provided along a first end of the rod body, and a second bending body is provided along a second end of the rod body. The bending directions of the second bending body and the first bending body are opposite to those of the rod body. The first bending body is connected to the locking bolt, and the second bending body is movably connected to the restraint mechanism.

10. The door lock according to claim 8, characterized in that, The first port and the first guide groove form the first path, and the second guide groove and the second port form the second path.

11. The door lock according to claim 10, characterized in that, The first stop and the second stop are arranged sequentially in the direction from the first constraint position to the second constraint position. The second stop is provided with a first guide surface. The first guide surface and the first stop form the first opening. The first guide surface is located in the direction in which the limiting rod disengages from the recess. During the process of the limiting rod disengaging from the recess, the limiting rod touches the first guide surface to pass through the first opening and slide into the first guide groove.

12. The door lock according to claim 11, characterized in that, The first guide surface protrudes from the first guide groove beyond the first stop, so that after the limiting rod passes through the first opening and slides into the first guide groove, it can move along the first guide groove to the first constraint position as the bolt moves, passing over the first opening.

13. The door lock according to claim 10, characterized in that, The first stop block is provided with a second guide surface, which is located in the direction in which the limiting rod is removed from the first constraint position. During the process of the limiting rod being removed from the first constraint position, the limiting rod touches the second guide surface and moves along the second guide groove.

14. The door lock according to claim 10, characterized in that, The second guide groove is provided with a third guide surface. The first stop and the third guide surface are arranged sequentially in the direction from the first constraint position to the second constraint position. During the process of the limiting rod leaving the first constraint position, the limiting rod touches the third guide surface and moves to the second constraint position along with the locking bolt through the second passage.

15. The door lock according to claim 1, characterized in that, The driving direction of the driving component intersects with the movement direction of the locking bolt.

16. The door lock according to claim 15, characterized in that, The driving component includes a driver and a push rod disposed at the driving end of the driver, the push rod having a first contact surface; The bolt is provided with a second contact surface; The driver abuts against the second contact surface through the first contact surface to drive the locking bolt.

17. The door lock according to claim 1, characterized in that, The bolt has a limiting position. When the bolt moves to the limiting position of the bolt, the bolt restricts the movement of the bolt. When the bolt leaves the limiting position of the bolt, the bolt does not restrict the movement of the bolt.

18. The door lock according to claim 17, characterized in that, The bolt is provided with a first guide surface. When the bolt is in the first constrained position and the bolt tongue is disengaged from the lock cylinder, the bolt tongue abuts against the first guide surface to drive the bolt to move. And / or, the bolt is provided with a second guide surface, and when the bolt is in the first constrained position and the bolt is inserted into the lock cylinder, the bolt abuts against the second guide surface to drive the bolt to move.

19. The door lock according to claim 1, characterized in that, The lock cylinder is provided with a rotating arm, the rotating arm is provided with a pawl, a lever and a connecting rod, the pawl, the lever and the connecting rod are intersecting and a rotation axis is provided at the intersection, and the rotating arm can rotate around the rotation axis; During the process of the bolt being inserted into the lock cylinder, the bolt acts on the lever to rotate the rotating arm, so that the pawl locks the bolt; during the process of the bolt disengaging from the lock cylinder, the bolt acts on the pawl to rotate the rotating arm, so that the pawl releases the bolt. The connecting rod has a limiting position. When the bolt moves to the limiting position of the connecting rod, the bolt restricts the movement of the rotating arm to restrict the movement of the lock cylinder. When the bolt leaves the limiting position of the connecting rod, the bolt does not restrict the movement of the rotating arm to not restrict the movement of the lock cylinder.

20. The door lock according to claim 1, characterized in that, The driving component is used to drive the locking bolt under preset conditions; And / or, the driver of the drive is a wax motor.

21. A dishwasher, characterized in that, The lock includes a body, a door body, and a door lock as described in any one of claims 1-20, wherein one of the bolt and the lock cylinder is located in the door body and the other is located in the body.

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