CN117627464A - Door lock and dish washer - Google Patents

Abstract

The application discloses a door lock and dish washer. The door lock comprises a lock tongue, a lock core and a locking piece, wherein the lock core comprises a pair of lock arms, the two lock arms can be movably arranged to lock or release the lock tongue, and the locking piece is used for limiting the movement of the lock arms. The lock core can take place corresponding activity when locking the spring bolt in this application, through setting up locking piece restriction lock arm activity, thereby just so can prevent the activity of lock arm and reach the purpose that restriction spring bolt breaks away from the lock core, the lock core in this application can be applied to multiple scene, for example on household appliances such as dish washer, washing machine, oven.

Description

Door lock and dish washer

Technical Field

The application relates to the technical field of dish washers, in particular to a door lock and a dish washer.

Background

A washing cycle of the dish washer comprises the processes of pre-washing, rinsing, drying and the like, wherein the rinsing process is a high-temperature washing stage, the temperature can reach 80 ℃, and residues difficult to clean such as greasy dirt and the like can be sufficiently cleaned. .

Disclosure of Invention

The present application aims to solve, at least to some extent, the technical problems in the related art. For this purpose, the present application proposes a door lock which can prevent a user from unlocking by mistake.

To achieve the above object, the present application discloses a door lock including:

a bolt;

the lock cylinder comprises a pair of lock arms, and the two lock arms are movably arranged to lock or release the lock tongue; and

and the locking piece is used for limiting the movement of the locking arm.

In some embodiments of the present application, the locking arm is rotatably disposed and the locking member is configured to limit rotation of the locking arm.

In some embodiments of the present application, the locking member is configured to extend between or sandwich two of the locking arms to limit rotation of the two locking arms.

In some embodiments of the present application, the locking arm is provided with a rotation axis and a limit stop, the locking arm can rotate around the rotation axis, and the locking piece is used for extending between or clamping the two limit stops so as to limit the rotation of the two locking arms.

In some embodiments of the present application, the lock tongue is movably in direct contact with a first end of the lock arm, the rotation axis and the limit stop are disposed at a second end of the lock arm, the first end and the second end are disposed opposite to each other, and a distance between the two limit stops decreases as a distance between the two first ends increases.

In some embodiments of the present application, the locking member includes a driver and a lock bolt, the lock bolt being provided at a driving end of the driver;

the driver is used for driving the lock bolt to extend between the two locking arms or clamp the two locking arms so as to limit the rotation of the two locking arms.

In some embodiments of the present application, one of the locking arms is provided with a first engagement member and the other locking arm is provided with a second engagement member, the first engagement member and the second engagement member being engaged with each other;

the locking piece is used for limiting the rotation of the first engagement piece or the second engagement piece so as to limit the rotation of the two locking arms.

In some embodiments of the present application, the first engagement member is disposed at a rotation axis of the corresponding locking arm, and the second engagement member is disposed at a rotation axis of the corresponding locking arm;

and/or, the first meshing piece and the second meshing piece are in a gear structure.

In some embodiments of the present application, the first engagement member is provided with an extension rod;

the locking piece comprises a driver and a lock bolt, and the lock bolt is arranged at the driving end of the driver;

the driver is used for driving the lock bolt to move to the position, in the rotating direction of the extension rod, against the extension rod.

In some embodiments of the present application, the door lock further comprises an elastic member, the driver is a reciprocating driver, and the elastic member is disposed away from the driving end of the driver and is connected with the driver.

In some embodiments of the present application, the direction in which the lock tongue is disengaged from and inserted into the lock cylinder is a first direction, and the driving direction of the driver of the locking member is the same as the first direction.

In some embodiments of the present application, the door lock further includes an upper housing and a lower housing, the upper housing is connected with the lower housing to form a receiving space, and the lock cylinder and the locking member are disposed in the receiving space.

In some embodiments of the present application, the locking member is configured to act under preset conditions to limit movement of the locking arm.

In some embodiments of the present application, the actuator of the locking element is a wax motor.

In some embodiments of the present application, the door lock further comprises a micro switch for being triggered when the locking member restricts movement of the locking arm.

In some embodiments of the present application, the locking member includes a driver and a lock bolt, the lock bolt is provided at a driving end of the driver, and the driver is used for driving the lock bolt to limit rotation of the two locking arms;

the door lock further comprises a lever, one end of the lever is used for being connected with the lock bolt, and the other end of the lever is used for touching a button of the micro switch.

The application also discloses a dish washer, dish washer includes organism, door body and the lock of any one of the above-mentioned embodiment, the spring bolt with one of the lock core is located the door body, another one is located the organism.

According to the technical scheme, the locking piece is added on the basis of the lock structure formed by the lock tongue and the lock core, the locking piece is used for limiting the movement of the lock arm, and the lock arm can move correspondingly in the process of releasing the lock tongue by the lock core, so that the release of the lock tongue can be prevented when the lock arm is locked, and the false unlocking of a user can be prevented. When the door lock is applied to the dish washing machine, the dish washing machine can control the locking piece to limit the movement of the locking arm when the dish washing machine is in a high-temperature washing stage, so that the high-temperature water splashing caused by forcibly pulling the dish washing machine door by a user can be prevented.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from the structures shown in these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic view of a lock tongue and a lock cylinder of a door lock in a separated state (a door-open state) according to some embodiments of the present application;

FIG. 2 is a schematic illustration of a closing process (door closed) of a lock tongue and a lock cylinder of a door lock according to some embodiments of the present application;

FIG. 3 is a schematic view of a door lock according to some embodiments of the present application in a locked state;

FIG. 4 is a schematic view of a door lock according to some embodiments of the present application in a locked state;

FIG. 5 is a schematic diagram of a door lock according to some embodiments of the present application with a bolt and a lock cylinder in a separated state (open state);

FIG. 6 is a schematic view of a door lock in a closed state (closed state) with a lock tongue and a lock cylinder according to some embodiments of the present application;

FIG. 7 is a schematic illustration of a door lock according to some embodiments of the present application in a locked state;

fig. 8 is an exploded view of a door lock structure in accordance with some embodiments of the present application.

Reference numerals illustrate:

spring bolt 100, guide head 110, guide surface 120, locking surface 130;

lock cylinder 200, lock arm 210, lock space 211, rotation shaft center 212, limit stopper 220, first engagement piece 230, extension rod 231, second engagement piece 240, spring 250;

a locking member 300, a driver 310, a latch 320, a latch claw 321, and an elastic member 330;

upper housing 410, lower housing 420, gap 421;

push rod 510, lever 520, micro switch 530.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

Some household appliances, such as dishwashers, washing machines, microwave ovens, etc., have a door lock by which the door body is locked or released. Taking a dishwasher as an example, the dishwasher is an apparatus capable of automatically cleaning tableware, generally the dishwasher includes a machine body having a washing chamber in which a bowl basket is disposed, and a door body for closing the washing chamber, in which the tableware is placed in the bowl basket, and the bowl basket can be pulled out of or pushed into the washing chamber. When the door body is closed, the door body is locked on the machine body through the door lock, at the moment, a corresponding washing process or drying process can be carried out in the washing cavity, when the door body needs to be opened, a user pulls the door body, and the door body is separated from the locking of the door lock, so that the washing cavity is opened, that is, the door lock is a device capable of realizing locking and unlocking under the action of external force. This can lead to the risk of high-temperature scalding if the door is pulled open by the user, in particular by a child, during some high-temperature operations of the dishwasher. The present application thus proposes a door lock which can be locked, preventing or preventing a user from unlocking by mistake.

The door lock is described in this application by taking a dishwasher as an example, and it is understood that the door lock of this application may also be used in other household appliances or devices that require a door lock to lock a door body, such as the aforementioned washing machine, microwave oven, etc.

As shown in fig. 1 and 2, the door lock includes a deadbolt 100, a lock cylinder 200, and a locking piece 300. In some embodiments, lock tongue 100 may be disposed on a door body and lock cylinder 200 may be disposed on a body, in other embodiments, lock tongue 100 may be disposed on a body and lock cylinder 200 may be disposed on a door body. The lock tongue 100 is a structure which is matched with the lock cylinder 200 to realize locking or releasing, and can be separated or closed under the action of force, for example, when a user pulls a door body to open, the lock tongue 100 is separated 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, and the specific forms of the lock tongue 100 and the lock cylinder 200 can be selected according to actual conditions. In this embodiment, description will be given taking an example in which lock tongue 100 is provided in a door body and lock cylinder 200 is provided in a machine body.

The lock tongue 100 is formed by embedding a single component in the top of the door body, or the lock tongue 100 is formed by punching the top of the door body, the lock tongue 100 is provided with a guide head 110 towards the lock cylinder 200, the guide head 110 is used for guiding the lock tongue 100 to be inserted into the lock cylinder 200 described below, a guide surface 120 and a locking surface 130 are sequentially arranged along the direction (the direction from back to front in the drawing) of the guide head 110 away from the lock cylinder 200, the guide surfaces 120 are arranged in two and symmetrically arranged by taking the direction (the direction from back to front in the drawing) away from the lock cylinder 200 as a symmetrical axis, the locking surfaces 130 are also arranged in two and symmetrically arranged by taking the direction (the direction from back to front in the drawing) away from the lock cylinder 200 as a symmetrical axis, the inclination degree of the guide surface 120 relative to the symmetrical axis is smaller than that of the locking surface 130, an acute angle is formed between the two guide surfaces 120, and an included angle formed between the two locking surfaces 130 is larger than an acute angle formed between the two guide surfaces 120, namely an acute angle, a right angle or an obtuse angle can be formed between the two locking surfaces 130.

The lock cylinder 200 is disposed on a machine body, generally, a reinforcement rib is disposed on the machine body of the dishwasher, the lock cylinder 200 is disposed on the reinforcement rib, as can be seen from fig. 1, the lock cylinder 200 includes a pair of movable lock arms 210, a locking space 211 is formed between the two lock arms 210, when the door needs to be closed, the door body drives the lock tongue 100 to be embedded into the locking space 211, and the lock cylinder 200 locks the lock tongue 100, i.e. locks the door body. When the door needs to be opened, a user pulls the door body, and the door body drives the lock tongue 100 to break loose from the locking of the lock arm 210 and separate from the locking space 211, so that the unlocking of the door body is realized. It is understood that the locking arm 210 can be used in various manners as long as the locking arm 210 can lock the locking bolt 100. In some embodiments, the locking arm 210 may be a reciprocating type of motion, a rotating type of motion, or a combination of these, as the case may be. In this embodiment, the lock arm 210 is shown as a rotatable structure, which can make the whole lock core 200 more compact, and has better performance for the design of parts and the touch optimization of door opening and closing force.

Specifically, lock arm 210 has a rotation axis 212, and lock arm 210 is rotatable about this rotation axis 212, and as shown in fig. 1 and 2, two lock arms 210 are disposed opposite to each other and rotatable relative to each other, a spring 250 is disposed between two lock arms 210, and lock arm 210 forms a locking portion toward one end of lock tongue 100. When the door is closed, the door body drives the lock tongue 100 to move, the guide head 110 of the lock tongue 100 is firstly inserted into the space between the two locking parts, the lock tongue 100 is prevented from deviating in the moving process, along with the movement of the lock tongue 100, the guide surface 120 of the lock tongue 100 contacts the locking parts, the locking parts are pushed open to two sides under the pushing action of the lock tongue 100 due to the inclined arrangement of the guide surface 120, at the moment, the spring 250 is stretched to generate pulling force on the two lock arms 210, after the lock tongue 100 smoothly moves into the locking space 211, the two lock arms 210 are reset under the pulling force of the spring 250, the locking parts are propped against the locking surface 130 to keep the lock tongue 100 in the locking space 211, and the door body is in a closed state at the moment. Since locking surface 130 is inclined with respect to guide surface 120, the resistance to locking surface 130 of locking bolt 100 when the user pulls the door open is greater than the resistance to guide surface 120 of locking bolt 100 when the user pushes the door closed, so that the closing of the door can be well ensured. It will be appreciated that spring 250 need not be disposed between two locking arms 210, and in some embodiments, spring 250 may be disposed in two, i.e., spring 250 and locking arms 210 may be in a one-to-one correspondence, so long as spring 250 is capable of exerting a force on the corresponding locking arm 210 when the door is opened or closed.

Also as described above, although the force required for the user to pull the door body to open is greater than that required for the door body to be closed, the door body is not impossible to open, so by providing the locking member 300, the locking member 300 can control the locking member 300 to restrict the movement of the locking arm 210, i.e., to restrict the rotation of the locking arm 210, when the dishwasher reaches a certain operation condition, since the locking arm 210 is required to be moved to release the locking bolt 100 from the lock cylinder 200, the movement of the locking arm 210 is restricted by an additional structural member, so that the door body can be effectively prevented from being forcibly opened by a mechanical means, or the resistance of the door body to be opened can be greatly increased, so that the user can recognize that the door body cannot be opened at this time, to prevent the door body from being opened due to the locking bolt 100 being released from the lock cylinder 200. For example, when the dishwasher is in a high-temperature rinsing process, the spray arm in the washing cavity of the dishwasher is in rotary spraying high-temperature and high-pressure water flow, if the door body is forced to be pulled open at the moment, the high-temperature and high-pressure water flow is easily sprayed out of the dishwasher, so that the injury to a user is caused, and the situation is effectively avoided through the action of the locking piece 300.

It can be seen from the above that when the locking member 300 does not work, the lock bolt 100 and the lock core 200 form a lock structure, so that the door body can be normally opened and closed, and when the locking member 300 works, the mechanical protection device is added to the lock structure formed by the lock bolt 100 and the lock core 200, and the locking member 300 is used for restricting the movement of the lock arm 210, so that the door body can be effectively prevented from being forced to be pulled open, and danger is avoided.

In some embodiments of the present application, as shown in fig. 1 and 2, a locking member 300 is used to extend between two locking arms 210 to limit rotation of the two locking arms 210, or a locking member 300 is used to clamp two locking arms 210 to limit rotation of the two locking arms 210. Specifically, as described above, when the door body is closed or opened, locking bolt 100 may exert a force on locking arm 210, causing locking arm 210 to rotate, thereby achieving locking or release. Therefore, the present embodiment achieves the purpose of preventing opening by restricting the locking arm 210, that is, by the action of the locking member 300, the locking member 300 is inserted between the two locking arms 210 or clamps the two locking arms 210, so that the locking member 300 is located on the rotation path of the two locking arms 210, that is, the locking member 300 occupies the space required for the rotation of the locking arms 210, so that the locking arm 210 is blocked from rotating, and the locking bolt 100 cannot be separated from the locking space 211 formed by the two locking arms 210, thus preventing the door body from being forced to be pulled apart.

Specifically, referring to FIG. 3, in some embodiments of the present application, locking arm 210 is provided with a limit stop 220 and a rotational axis 212, and locking arm 210 is rotatable about rotational axis 212, and locking member 300 is configured to extend between two limit stops 220 or to clamp two limit stops 220 to limit rotation of two locking arms 210. In this embodiment, two locking arms 210 are rotatably disposed relative to each other, the locking arms 210 are disposed in a front-rear direction, the locking arms 210 rotate to the left and right sides with the rear end as a rotation axis 212, and a limit stop 220 is also disposed at the rear end. When locking bolt 100 is inserted between two locking arms 210, two locking arms 210 rotate to the left and right sides first, and then reset, thus completing the locking process. Since the rear end of the locking arm 210 is provided with the limit stops 220, the locking member 300 can prevent the rotation of the two limit stops 220 when the locking member 300 is inserted between the two limit stops 220, thereby preventing the rotation of the two locking arms 210. The shape of the bump stop 220 may involve taking on a variety of shapes, such as square, polygonal, shaped polygonal, etc. Compared with the scheme of extending into the space between the two limit stops 220, the locking piece 300 is clamped between the two limit stops 220, the locking piece 300 is coated on the rear end of the locking arm 210 from back to front as shown in the figure, the constraint point of the locking piece 300 to the locking arm 210 is closer to the acting point of the locking bolt 100 to the locking arm 210, the constraint effect is greatly enhanced, the anti-rotation stability of the locking arm 210 can be improved, and the stability of the door lock is better when the door body is forcibly opened.

Further, as shown in fig. 3, lock tongue 100 is movably and directly contacted with a first end of lock arm 210, and rotation axis 212 and limit stop 220 are disposed at a second end of lock arm 210, where the first end is opposite to the second end, and a distance between two limit stops 220 decreases as a distance between two first ends increases. In this embodiment, the first ends of the two locking arms 210 form a lock for the locking bolt 100, when the locking bolt 100 is about to leave the first ends of the locking arms 210, the first ends of the locking arms 210 are extruded, so that the distance between the two first ends is gradually increased, and the whole locking arm 210 rotates, and the locking piece 300 (the locking bolt 320) occupies between the two second ends, and cannot be reduced between the two second ends, so as to prevent the locking arm 210 from rotating, thereby preventing the locking bolt 100 from falling out or semi-falling out, and the rotation axis 212 and the limit stop 220 are both set as the second ends, so that the space required by the rotation of the locking arm 210 or the rotation of the locking arm 210 can be reduced, the volume occupied by the door lock is reduced, and the miniaturization of the door lock is facilitated.

Further, in some embodiments of the present application, similar to the previous embodiments, the difference is that rotation axis 212 is located between two ends of lock arm 210 (not shown in the drawings), and lock arm 210 on one side of rotation axis 212 is a first end, and lock arm 210 on the other side of rotation axis 212 is a second end, where two first ends can lock bolt 100, and the second ends form limit stops 220, and lock 300 is configured to extend between or clamp two second ends, thereby limiting rotation of two lock arms 210. Specifically, in this embodiment, the locking arm 210 forms a lever-like structure with a second end extending in an opposite direction relative to the first end, the second end forming a portion of the lever. When the door is closed or opened, locking bolt 100 applies a force to the first end, locking arm 210 in turn rotates, and the second end is restrained because the second end forms part of the lever, such that locking member 300 restricts movement of locking arm 210 with less force.

In some embodiments of the present application, as shown in fig. 3 and 4, the locking member 300 includes a latch 320 and a driver 310, the latch 320 being provided at a driving end of the driver 310;

the driver 310 is used to drive the latch 320 to extend between two latch arms 210 or to clamp two latch arms 210 to limit rotation of the latch arms 210.

Specifically, the driver 310 may take various forms, such as a reciprocating driver, a rotary driver, etc., in this embodiment, a reciprocating driver is used, the latch 320 is connected to the driving end of the driver 310, and when the driver 310 receives a signal, the driver 310 can drive the latch 320 to reciprocate, thereby limiting the latch arm 210. The latch 320 has a long rod shape, a certain rotation space is reserved between the two latch arms 210, and when the latch 320 is driven by the driver 310 to extend into the rotation space, the rotation of the two latch arms 210 can be blocked. The end of the lock plunger 320 may be further provided with a locking claw 321, and the locking claw 321 can clamp two locking arms 210, and the clamped locking arm 210 is limited to move, so that the rotation of the locking arm 210 can be limited.

In some embodiments mentioned above, the locking member 300 needs to contact two locking arms 210 simultaneously to achieve the limitation of the locking arms 210, but there are some reasons, such as the structural design requirement of the door lock, the optimization of the parts of the door lock, etc., and the change of the internal space of the door lock, so that it is critical that the locking member 300 cannot contact two locking arms 210 well at the same time, and at the same time, one locking arm 210 needs to contact the other locking arm 210 at the same time. Thus, in some embodiments of the present application, as shown in fig. 4, 5 and 6, one of the locking arms 210 is provided with a first engagement member 230 and the other locking arm 210 is provided with a second engagement member 240, the first engagement member 230 and the second engagement member 240 being engaged with each other;

the locking member 300 serves to restrict rotation of the first engagement member 230 or the second engagement member 240, thereby restricting rotation of the two locking arms 210.

Specifically, the first engaging member 230 is provided on one of the locking arms 210 to be movable with the movement of the locking arm 210, and the second engaging member 240 is provided on the other locking arm 210 to be movable with the movement of the locking arm 210, and since the first engaging member 230 and the second engaging member 240 are engaged with each other, that is, the first engaging member 230 and the second engaging member 240 are interlocked, the restriction of the two locking arms 210 can be achieved by restricting the first engaging member 230 or the second engaging member 240 by the locking member 300. Taking the process that lock tongue 100 is separated from lock cylinder 200 as an example, when lock 300 is locked and the door body is forcibly pulled open, lock tongue 100 applies force to lock arms 210, two lock arms 210 will rotate, one of first engaging member 230 and second engaging member 240 is limited and cannot rotate, and the other of first engaging member 230 and second engaging member 240 is limited and cannot rotate, so that limitation of two lock arms 210 can be achieved, and by the arrangement, the structure of the door lock is optimized, too dense arrangement of lock element 300 and lock cylinder 200 is avoided, the inner space is optimized, and the door lock is applicable to more structural changes.

Further, as shown in fig. 5 and 6, the first engagement member 230 is disposed at the rotation axis 212 of the corresponding lock arm 210, and the second engagement member 240 is disposed at the rotation axis 212 of the corresponding lock arm 210. Specifically, the first engaging member 230 and the rotation axis 212 of the corresponding locking arm 210 are coaxially disposed, and the second engaging member 240 and the rotation axis 212 of the corresponding locking arm 210 are coaxially disposed, so that when the two locking arms 210 rotate, the first engaging member 230 and the second engaging member 240 can rotate along with the rotation path of the corresponding locking arm 210, so as to avoid the first engaging member 230 and the second engaging member 240 from extruding each other, specifically, as shown in fig. 5, the first engaging member 230 and the second engaging member 240 are in a gear structure, and mutual engagement and power transmission are realized through the gear structure, so that locking or releasing is smoother.

In some embodiments of the present application, as shown in fig. 6, the first engagement member 230 is provided with an extension rod 231;

the locking member 300 includes a latch 320 and a driver 310, the latch 320 being disposed at a driving end of the driver 310;

the driver 310 is used to drive the latch 320 to move in the rotational direction of the extension bar 231 so as to be abutted against the extension bar 231.

Specifically, the first engagement member 230 is provided with an extension bar 231 extending rightward, and the form of the extension bar 231 is not limited, and the purpose thereof is to be against the locking member 300. The locking member 300 includes a driver 310 and a latch 320, the driver 310 and the latch 320 are located at the rear of the extension bar 231 shown in fig. 5, and the latch 320 is used to abut against the end of the extension bar 231, which is equivalent to amplifying the resisting action of the latch 320 several times by using a lever structure, thereby effectively improving the operation stability.

In some embodiments of the present application, as shown in fig. 7, the door lock includes an elastic member 330, and the actuator 310 is a reciprocating actuator, and the elastic member 330 is disposed away from the driving end of the actuator 310 and is connected to the actuator 310. In this application, the elastic member 330 is a spring, one end of the spring is connected to the bottom of the driver 310, which may be bonded, abutted, or welded together, and the other end of the spring is fixed (the other end of the spring is fixed on the fixing post of the lower housing 420), and the spring is in a non-compressed and non-stretched state when the driver 310 is not operated. Under the condition that the locking member 300 limits the movement of the locking arm 210, the door body is pulled by the user to receive a great resistance, and there are some situations, for example, when some components are out of order, so that the locking member 300 continuously limits the movement of the locking arm 210, the user needs to forcefully pull the door to check, or other situations need to forcefully pull the door, so that by arranging the elastic member 330, even if the locking member 300 is in a state of limiting the movement of the locking arm 210, the locking arm 210 drives the whole locking member 300 to move when the force of the user exceeds a certain critical point, the elastic member 330 compresses, and the user can also open the door body.

In some embodiments of the present application, as shown in fig. 3 and 7, with the direction in which lock tongue 100 is disengaged from insertion lock cylinder 200 as the first direction, the driving direction and the first direction of driver 310 of lock 300 are the same. Specifically, as shown in fig. 3, the front-rear direction is the direction in which lock tongue 100 is separated from and inserted into lock cylinder 200, and the driving direction of driver 310 is the same as that of the front-rear direction, that is, driver 310 can adopt linear reciprocating driving, so that complexity is reduced, and thus, limitation and release of lock arm 210 can be realized when driver 310 realizes driving, excessive force transmission components are avoided, overall layout is optimized, and cost is reduced.

In some embodiments of the present application, locking member 300 is configured to act under predetermined conditions to limit movement of locking arm 210. Specifically, the preset condition may be set to a preset temperature, the dishwasher may be pre-washed, rinsed and dried in one washing cycle, cold water or warm water is usually used during pre-washing, and high temperature water is used during rinsing, the preset condition is designed to be a temperature value in the rinsing stage, and the set washing time sequence of the dishwasher may control the locking member 300 to lock when the dishwasher is operated in the rinsing stage, so that damage caused by misoperation of the door can be prevented. It can be understood that the preset condition can be designed to be whether the washing pump of the dishwasher works or not, when the washing pump works, water flows can be emitted from the spray arm, and when the washing pump works, the locking piece 300 is controlled to limit the locking arm 210, so that no matter what stage the dishwasher is, the damage caused by the false door opening of a user can be prevented; the micro switch may be further provided, and when it is detected that the lock tongue 100 is inserted, the locking member 300 is controlled to lock, and the preset condition is that the lock tongue 100 and the lock cylinder 200 are closed. For other devices, such as washing machines, the rotational speed may be used as a preset condition, and for ovens, the temperature may be used as a preset condition.

Further, the driver of the locking member 300 is a component that performs a corresponding action after being energized, and specifically, the driver 310 of the locking member 300 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, driving the piston outward. When the thermistor is de-energized, the liquid wax cools and the internal spring returns the piston to its original position. During operation of the dishwasher, the driver 310 is energized to drive the latch 320 when a signal that the locking member 300 is required to be locked is received, and the driver 310 is de-energized to drive the latch 320 to be reset when a signal that the locking member 300 is required to be unlocked is received. In addition, since the wax motor is used, the latch 320 is reset when the whole machine is suddenly turned off in the locked state of the locking member 300, and the user can normally open the door.

In some embodiments of the present application, as shown in fig. 8, the door lock further includes an upper housing 410 and a lower housing 420, wherein the upper housing 410 is connected with the lower housing 420 to form a receiving space in which the lock cylinder 200 and the locking member 300 are disposed. Specifically, two locking arms 210 are rotatably mounted on a lower housing 420, a spring is provided between the two locking arms 210, a driver 310 and a latch 320 are mounted on the lower housing 420, an upper housing 410 is connected with the lower housing 420 as a cover, and a notch 421 is provided on the lower housing 420 for allowing the locking bolt 100 to enter and exit. The present embodiment facilitates installation into a dishwasher by integrating the key cylinder 200 and the locking member 300 into one integral unit by the upper and lower housings 410 and 420.

Further, as shown in fig. 1 and 5, the door lock further includes a micro switch 530, wherein the micro switch 530 is configured to be triggered when the locking member 300 restricts the movement of the locking arm 210. Specifically, to prompt the user that the dishwasher is in a locked state, a signal is generated by triggering the micro switch 530 when the locking member 300 is operated, and locking information is generated on the display interface of the dishwasher.

Specifically, the door lock further includes a lever 520, one end of the lever 520 may be directly connected to the latch 320, and may be further connected to the latch 320 through a push rod 510, wherein the other end of the lever 520 is used for touching a button of the micro switch 530, and when the driver 310 drives the latch 320 to act, the latch 320 synchronously drives one end of the lever 520, and the other end of the lever 520 rotates to touch the button of the micro switch 530, so that the micro switch 530 generates a signal.

According to the door lock disclosed by the application, the door lock can be applied to various devices, and can effectively prevent the door of the dish washing machine from being opened by mistake when being applied to the dish washing machine, so that the use safety of the dish washing machine is improved.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structural changes made in the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims (16)

1. A door lock, comprising:

a bolt;

the lock cylinder comprises a pair of lock arms, and the two lock arms are movably arranged to lock or release the lock tongue; and

and the locking piece is used for limiting the movement of the locking arm.

2. The door lock of claim 1, wherein the locking arm is rotatably disposed and the locking member is adapted to limit rotation of the locking arm.

3. The door lock according to claim 2, wherein said locking member is adapted to extend between or sandwich two of said locking arms to restrict rotation of the two locking arms.

4. A door lock according to claim 3, wherein said locking arm is provided with a rotational axis and a limit stop, said locking arm being rotatable about said rotational axis, said locking member being adapted to extend between or to grip both of said limit stops to limit rotation of both of said locking arms.

5. The door lock of claim 4, wherein the locking tongue is movably in direct contact with a first end of the locking arm, the pivot and the limit stop are disposed at a second end of the locking arm, the first end and the second end are disposed opposite to each other, and a distance between the limit stops decreases as a distance between the first ends increases.

6. A door lock according to claim 3, wherein the locking member comprises a driver and a lock bolt, the lock bolt being provided at a drive end of the driver;

the driver is used for driving the lock bolt to extend between the two locking arms or clamp the two locking arms so as to limit the rotation of the two locking arms.

7. The door lock according to claim 2, wherein one of said lock arms is provided with a first engagement member and the other of said lock arms is provided with a second engagement member, said first engagement member and said second engagement member being engaged with each other;

the locking piece is used for limiting the rotation of the first engagement piece or the second engagement piece so as to limit the rotation of the two locking arms.

8. The door lock of claim 7, wherein the first engagement member is disposed at a rotational axis of the corresponding lock arm and the second engagement member is disposed at a rotational axis of the corresponding lock arm;

and/or, the first meshing piece and the second meshing piece are in a gear structure.

9. The door lock according to claim 7, wherein the first engagement member is provided with an extension rod;

the locking piece comprises a driver and a lock bolt, and the lock bolt is arranged at the driving end of the driver;

the driver is used for driving the lock bolt to move to the position, in the rotating direction of the extension rod, against the extension rod.

10. The door lock of claim 9, further comprising an elastic member, wherein the actuator is a reciprocating actuator, and wherein the elastic member is disposed away from the actuation end of the actuator and is coupled to the actuator.

11. The door lock according to claim 1, wherein a direction in which the lock tongue is disengaged from and inserted into the lock cylinder is a first direction, and a driving direction of the driver of the locking member is the same as the first direction.

12. The door lock of claim 1, further comprising an upper housing and a lower housing, wherein the upper housing is connected to the lower housing to form a receiving space, and wherein the lock cylinder and the locking member are disposed in the receiving space.

13. The door lock of claim 1, wherein the locking member is adapted to act under preset conditions to limit movement of the locking arm;

and/or the driver of the locking piece is a wax motor.

14. The door lock of claim 1, further comprising a micro switch for being triggered when the locking member restricts movement of the locking arm.

15. The door lock of claim 14, wherein the locking member comprises a driver and a lock bolt, the lock bolt being provided at a driving end of the driver, the driver being configured to drive the lock bolt to limit rotation of the two locking arms;

the door lock further comprises a lever, one end of the lever is used for being connected with the lock bolt, and the other end of the lever is used for touching a button of the micro switch.

16. A dishwasher, comprising a body, a door body and a door lock according to any one of claims 1 to 15, one of the locking tongue and the lock cylinder being provided in the door body, the other being provided in the body.