CN218092512U - Door lock and dish washing machine - Google Patents

Abstract

The application discloses a door lock and a dish washing machine. The door lock comprises a lock tongue, a lock cylinder and a locking piece, wherein the lock cylinder 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. Corresponding activity can take place for the lock core when the locking spring bolt in this application, through setting up the activity of locking piece restriction locking arm, thereby just so can prevent the activity of locking arm to reach the purpose that the restriction spring bolt breaks away from the lock core, the lock core in this application can be applied to multiple scene, for example on domestic appliance such as dish washer, washing machine, oven.

Description

Door lock and dish washing machine

Technical Field

The application relates to the technical field of dish washing machines, in particular to a door lock and a dish washing machine.

Background

A washing cycle of the dishwasher comprises the processes of prewashing, rinsing, drying and the like, wherein the rinsing process is a high-temperature washing stage, the temperature can reach 80 ℃, and residues which are difficult to clean, such as oil stains and the like, can be sufficiently cleaned. .

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving, at least to some extent, the technical problems in the related art. The application provides a door lock which can prevent a user from unlocking by mistake.

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

a latch bolt;

the lock core comprises a pair of lock arms, and the two lock arms can be movably arranged to lock or release the lock tongue; and

a locking member for restricting 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 restrict rotation of the locking arm.

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

In some embodiments of this application, the locking arm is equipped with rotation axle center and limit stop, the locking arm can wind rotation axle center rotates, the locking piece is used for stretching into two between the limit stop or centre gripping two limit stop to the restriction is two the locking arm rotates.

In some embodiments of the present application, the lock tongue movably directly contacts with the first end of the lock arm, the rotation axis and the limit stop are disposed at the second end of the lock arm, the first end and the second end are disposed oppositely, and the distance between the two limit stops decreases with the increase of the distance of the first end.

In some embodiments of the present application, the lock comprises a driver and a latch, the latch being disposed at a drive end of the driver;

the driver is used for driving the lock bolt to extend into the space 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 said locking arms is provided with a first engaging member, and the other of said locking arms is provided with a second engaging member, said first engaging member and said second engaging member being engaged with each other;

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

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

and/or the first meshing part and the second meshing part are of gear structures.

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

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 rotating direction of the extension rod to abut against the extension rod.

In some embodiments of the present application, the door lock further includes a resilient member, the actuator is a reciprocating actuator, and the resilient member is disposed away from the actuation end of the actuator and is coupled to the actuator.

In some embodiments of the present application, a direction in which the latch bolt is disengaged from and inserted into the key cylinder is a first direction, and a 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 to the lower housing to form an accommodating space, and the lock cylinder and the locking member are disposed in the accommodating space.

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

In some embodiments of the present application, the driver of the lock 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 the movement of the locking arm.

In some embodiments of the application, the locking member comprises a driver and a lock plunger, the lock plunger is arranged at a driving end of the driver, and the driver is used for driving the lock plunger to limit the 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 the button of the micro switch.

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

This application technical scheme is through increasing the locking piece on the basis of the lock structure that spring bolt and lock core constitute, and this locking piece is used for restricting the activity of locking arm, and because corresponding activity can appear in the in-process locking arm that the lock core released the spring bolt, so can prevent the release of spring bolt when locking the locking arm to can prevent user's mistake unlocking. 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 in a high-temperature washing stage, thereby preventing high-temperature water splashing caused by a user forcibly pulling the door of the dish washing machine.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

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

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

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

FIG. 5 is a schematic view of a door lock according to some embodiments of the present disclosure with the deadbolt and cylinder separated (open state);

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

FIG. 7 is a schematic view of a lock assembly 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 according to some embodiments of the present application.

The reference numbers illustrate:

a latch tongue 100, a guide head 110, a guide surface 120, a lock surface 130;

the lock comprises a lock cylinder 200, a lock arm 210, a locking space 211, a rotating shaft center 212, a limit stop 220, a first engaging member 230, an extension rod 231, a second engaging member 240 and a spring 250;

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

upper shell 410, lower shell 420, notch 421;

push rod 510, lever 520, micro-switch 530.

The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicators are correspondingly changed.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is 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 a door body is locked or released. Taking a dishwasher as an example, the dishwasher is an apparatus capable of automatically cleaning tableware, generally speaking, the dishwasher includes a body and a door body, the body has a washing chamber, a basket is disposed in the washing chamber, the tableware is placed in the basket, the basket can be pulled out or pushed into the washing chamber, and the door body is used for closing the washing chamber. When the door body closes the washing chamber, the door body is locked on the machine body through the door lock, corresponding washing process or drying process can be carried out in the washing chamber at the moment, when the door body needs to be opened, a user pulls the door body, the door body is separated from the lock of the door lock, and therefore the washing chamber is opened, namely, the door lock can be locked, and the unlocking can be realized under the action of external force. This can lead to the risk of high temperature burns if the user, especially a child, pulls the door body apart in the event of a malfunction if the dishwasher is performing some high temperature operations. The present application thus proposes a door lock which can be locked and prevents or prevents a user from unlocking the door by mistake.

The door lock is described in the application by taking a dishwasher as an example, and it can be understood that the door lock in the application can also be used for other household appliances or some devices needing to lock a door body by using the door lock, such as the aforementioned washing machine, microwave oven and the like.

As shown in fig. 1 and 2, the door lock includes a latch bolt 100, a key cylinder 200, and a locking member 300. In some embodiments, locking bolt 100 may be disposed on a door body and lock cylinder 200 is disposed on a machine body, and in other embodiments, locking bolt 100 may be disposed on a machine body and lock cylinder 200 is disposed on a door body. The latch bolt 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 latch bolt 100 is separated from the lock cylinder 200, when the user pushes the door body to close, the latch bolt 100 is locked with the lock cylinder 200, and the specific forms of the latch bolt 100 and the lock cylinder 200 can be selected according to actual conditions. In the present embodiment, the tongue 100 is provided in the door body, and the key cylinder 200 is provided in the body.

The latch bolt 100 is formed as a single component and is embedded in the top of a door body, or the latch bolt 100 is stamped and formed on the top of the door body, the latch bolt 100 is provided with a guide head 110 toward the key cylinder 200, the guide head 110 is used for guiding the latch bolt 100 to be inserted into the key cylinder 200 mentioned below, a guide surface 120 and a locking surface 130 are sequentially provided along a direction (shown from back to front) in which the guide head 110 is far away from the key cylinder 200, the guide surface 120 is provided in two and is symmetrically provided with a direction (shown from back to front) far away from the key cylinder 200 as a symmetry axis, the locking surface 130 is also provided in two and is symmetrically provided with a direction (shown from back to front) far away from the key cylinder 200 as a symmetry axis, the inclination degree of the guide surface 120 relative to the symmetry axis is smaller than that of the locking surface 130 relative to the symmetry axis, an acute angle is formed between the two guide surfaces 120, an included angle formed between the two locking surfaces 130 is larger than that formed between the two guide surfaces 120, and an acute angle, a right angle or obtuse angle may be formed between the two locking surfaces 130.

The lock core 200 is disposed on the body, generally speaking, a reinforcing rib is disposed on the body of the dishwasher, the lock core 200 is disposed on the reinforcing rib, as can be seen from fig. 1, the lock core 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 core 200 realizes locking of the lock tongue 100, that is, realizes locking of the door body. When the door needs to be opened, a user pulls the door body, and the door body drives the bolt 100 to break away from the locking space 211 by breaking the locking of the locking arm 210, so that the door body is unlocked. Therefore, the movable form of the locking arm 210 can be varied as long as the locking arm 210 can lock the locking tongue 100. In some embodiments, the movement of the locking arm 210 may be a reciprocating movement or a rotating movement, which may be selected according to the actual situation. In the present embodiment, the lock arm 210 is rotatably disposed, and the rotatable disposition can make the whole lock cylinder 200 more compact, and has better performance for the design of parts, the hand feeling optimization of the door opening and closing force, and the like.

Specifically, the locking arm 210 has a rotation axis 212, and the locking arm 210 can rotate around the rotation axis 212, as shown in fig. 1 and fig. 2, two locking arms 210 are oppositely arranged and can rotate relatively, a spring 250 is arranged between the two locking arms 210, and one end of the locking arm 210 facing the lock tongue 100 forms a locking part. When closing the door, the door body drives the lock tongue 100 to move, the guide head 110 of the lock tongue 100 firstly inserts into the space between the two locking parts, prevent the offset of the lock tongue 100 in the moving process, along with the moving of the lock tongue 100, the guide surface 120 of the lock tongue 100 touches the locking parts, because the guide surface 120 is obliquely arranged, the locking parts are pushed open towards two sides under the pushing action of the lock tongue 100, at the moment, the spring 250 is stretched to generate tension force to the two lock arms 210, after the lock tongue 100 smoothly moves into the locking space 211, the two lock arms 210 reset under the tension force of the spring 250, the locking parts are abutted to the locking surfaces 130 to keep the lock tongue 100 in the locking space 211, and at the moment, the door body is in a closed state. Since locking surface 130 is inclined more with respect to guide surface 120, the resistance force applied to locking surface 130 of latch tongue 100 when the user pulls the door body to open is greater than the resistance force applied to guide surface 120 of latch tongue 100 when the user pushes the door body to close, and thus the closing of the door body can be well ensured. It will be appreciated that the spring 250 need not be disposed between two locking arms 210, and in some embodiments, the spring 250 may be disposed in two, i.e., one spring 250 and one locking arm 210, so long as the spring 250 can exert a force on the corresponding locking arm 210 when the door is opened and closed.

As also described above, although the force for the user to pull the door body to open is larger than the force required to close the door body, but not to open, 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 operating condition, since the locking tongue 100 is disengaged from the key 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 to the door body being opened can be greatly increased, so as to allow the user to recognize that the door body cannot be opened at this time, and prevent the door body from being opened by the locking tongue 100 being disengaged from the key cylinder 200. For example when dishwasher is in the process of high temperature rinsing, the spray arm in the washing intracavity of dishwasher this moment is in the rotatory high temperature high pressure rivers of spraying, if door body is pulled open by force this moment, then outside high temperature high pressure rivers spout the dishwasher easily, cause the injury to the user, and the effect through locking piece 300 then effectively avoids the emergence of this kind of condition.

Therefore, when the locking piece 300 does not work, the lock tongue 100 and the lock cylinder 200 form a lock structure, the opening and closing of a door body can be normally realized, when the locking piece 300 works, a mechanical protection device is equivalently added on the lock structure formed by the lock tongue 100 and the lock cylinder 200, and the locking piece 300 restricts the movement of the locking arm 210, so that the door body can be effectively prevented from being forcibly pulled open, and the danger is avoided.

In some embodiments of the present application, as shown in FIGS. 1 and 2, the locking member 300 is adapted to extend between two of the locking arms 210 to restrict rotation of the two locking arms 210, or the locking member 300 is adapted to retain two of the locking arms 210 to restrict rotation of the two locking arms 210. Specifically, as described above, when the door body is closed or opened, the latch tongue 100 exerts a force on the latch arm 210, so that the latch arm 210 rotates, thereby achieving locking or releasing. Therefore, the locking arm 210 is restricted to prevent opening, that is, the locking member 300 extends between two locking arms 210 or clamps two locking arms 210 by the action of the locking member 300, so that the locking member 300 is located on the rotation path of two locking arms 210, that is, the locking member 300 occupies the space required by the rotation of the locking arms 210, so that the rotation of the locking arms 210 is blocked, and the locking tongue 100 cannot be disengaged from the locking space 211 formed by two locking arms 210 because the locking arms 210 cannot rotate, so as to prevent the door body from being pulled open forcibly.

Specifically, referring to FIG. 3, in some embodiments of the present application, the locking arm 210 is provided with a positive stop 220 and a pivot axis 212, the locking arm 210 is capable of pivoting about the pivot axis 212, and the locking member 300 is configured to extend between the two positive stops 220 or to clamp the two positive stops 220 to limit the pivoting of the two locking arms 210. In this embodiment, the two lock arms 210 are relatively rotatably disposed, the lock arms 210 are disposed in a front-rear direction, the lock arms 210 rotate to left and right sides with a rear end as a rotation axis 212, and the limit stopper 220 is also disposed at the rear end. When the tongue 100 is inserted between the two lock arms 210, the two lock arms 210 rotate to the left and right, and then reset, thereby completing the locking process. Since the locking arm 210 is provided with the stoppers 220 at the rear ends thereof, the locking member 300 prevents the rotation of the two stoppers 220 when the locking member 300 is inserted between the two stoppers 220, thereby preventing the rotation of the two locking arms 210. The shape of the bump stopper 220 may be designed to take various shapes such as a square, a polygon, a shaped polygon, etc. Compared with the scheme of extending between the two limit stops 220, the locking piece 300 is used for clamping the two limit stops 220, as shown in the figure, the locking piece 300 covers the rear end of the locking arm 210 from back to front, the constraint point of the locking piece 300 on the locking arm 210 is closer to the force action point of the locking bolt 100 on the locking arm 210, the constraint effect is greatly enhanced, the rotation prevention stability of the locking arm 210 can be improved, and when the door body is forcibly opened, the stability of the door lock is better.

Further, as shown in fig. 3, the tongue 100 may directly contact a first end of the locking arm 210 movably, the rotation axis 212 and the limit stops 220 are disposed at a second end of the locking arm 210, the first end and the second end are disposed opposite to each other, and a distance between the two limit stops 220 decreases as a distance between the two first ends increases. In this embodiment, the first ends of the two locking arms 210 form a lock to the locking tongue 100, when the locking tongue 100 is about to leave the first end of the locking arm 210, the first end of the locking arm 210 is pressed to gradually increase the distance between the two first ends, so that the entire locking arm 210 rotates, since the locking member 300 (the locking bolt 320) occupies the space between the two second ends, which cannot be reduced, so as to hinder the rotation of the locking arm 210, thereby preventing the locking tongue 100 from coming out or half coming out, and the rotation axis 212 and the limit stop 220 are set as the second ends, which can reduce the space required by the rotation of the locking arm 210 or the rotation of the locking arm 210, reduce the volume occupied by the door lock, and facilitate the miniaturization of the door lock.

Further, in some embodiments of the present application, similar to the previous embodiment, except that the rotation axis 212 is located between two ends of the locking arm 210 (not shown), the first end of the locking arm 210 on one side of the rotation axis 212 is a first end, the second end of the rotation axis 212 is a second end, the two first ends can lock the locking tongue 100, and the second end forms the limit stop 220, and the locking member 300 is used to extend into or clamp the two second ends, thereby limiting the rotation of the two locking arms 210. Specifically, in the present embodiment, the locking arm 210 forms a lever-like structure with a second end extending in a direction opposite to the first end, the second end forming a portion of the lever. When the door body is closed or opened, the latch tongue 100 exerts a force on the first end, the lock arm 210 rotates, the second end is limited, and the second end forms a part of the lever, so that the locking piece 300 can limit the movement of the lock arm 210 under the condition of being restrained by smaller 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 disposed at a driving end of the driver 310;

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

Specifically, the driver 310 may take various forms, such as a reciprocating driver, a rotary driver, etc., and in this embodiment, a reciprocating driver is used, and the latch 320 is connected to the driving end of the driver 310, so that when the driver 310 receives a signal, the driver 310 can drive the latch 320 to reciprocate, thereby restricting the locking arm 210. The latch 320 is a long rod, and a certain rotation space is reserved between the two latch arms 210, so that when the latch 320 extends into the rotation space under the driving of the driver 310, the rotation of the two latch arms 210 can be blocked. The end of the latch 320 may further be provided with a locking claw 321, and the locking claw 321 acts to clamp the two locking arms 210, and the clamped locking arms 210 are restricted from moving, and thus the rotation of the locking arms 210 is also restricted.

In some of the above embodiments, the locking element 300 needs to contact two locking arms 210 at the same time 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 components of the door lock, etc., and the change of the internal space of the door lock, which results in the locking element 300 not contacting two locking arms 210 at the same time well, and it is critical that one of the locking arms 210 is contacted while the other locking arm 210 is limited. 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 engaging member 230, the other locking arm 210 is provided with a second engaging member 240, and the first engaging member 230 and the second engaging member 240 are engaged with each other;

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

Specifically, the first engaging member 230 is disposed on one of the lock arms 210 and is movable with the movement of the lock arm 210, the second engaging member 240 is disposed on the other lock arm 210 and is also movable with the movement of the lock 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 linked, the first engaging member 230 or the second engaging member 240 is restricted by the locking member 300, that is, the restriction of the two lock arms 210 can be achieved. Taking the process that the lock tongue 100 is separated from the lock cylinder 200 as an example, when the lock tongue 100 is locked by the locking piece 300 and the door body is forcibly pulled open, the lock tongue 100 exerts force on the lock arm 210, two lock arms 210 are about to rotate, because one of the first engaging piece 230 and the second engaging piece 240 is limited and cannot rotate, the other of the first engaging piece 230 and the second engaging piece 240 is limited and cannot rotate, so that the limitation of two lock arms 210 can be realized, through the arrangement, the structure of the door lock is optimized, the situation that the arrangement of the locking piece 300 and the lock cylinder 200 is too dense is avoided, the internal space is optimized, and the door lock is suitable for more structural changes.

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

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

the locker 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 lock bolt 320 to move to the rotation direction of the extension rod 231 so as to abut against the extension rod 231.

Specifically, the first engaging member 230 is provided with an extension rod 231 extending rightward, and the form of the extension rod 231 is not limited and is intended to abut 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 behind the extension rod 231 shown in fig. 5, and the latch 320 is used for abutting against the end of the extension rod 231, which is equivalent to that the resistance of the latch 320 is amplified by several times by using a lever structure, thereby effectively improving the working stability.

In some embodiments of the present application, as shown in fig. 7, the door lock includes a resilient member 330, the driver 310 is a reciprocating driver, and the resilient member 330 is disposed away from a driving end of the driver 310 and is connected to the driver 310. In this application, the elastic member 330 is a spring, one end of the spring is connected to the bottom of the actuator 310, and the spring is bonded, abutted or welded together, and the other end of the spring is fixed (the other end of the spring is fixed to a fixing post of the lower housing 420), and when the actuator 310 does not operate, the spring is in a non-compressed and non-stretched state. Under the condition that the locking member 300 limits the movement of the locking arm 210, at the moment, a user can receive great resistance when pulling the door body, and some situations exist, for example, some components are in failure, so that the locking member 300 can continuously limit the movement of the locking arm 210, at the moment, the user needs to forcibly pull the door to check, or other situations need to forcibly pull the door to open, therefore, 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, when the user exerts force exceeding a certain critical point, the locking arm 210 can drive the whole locking member 300 to move, the elastic member 330 is compressed, at the moment, the user can also open the door body, of course, the required force of the critical point needs to be set to be larger, and not only can the user open the door by mistake, but also the door can be opened under some special conditions.

In some embodiments of the present application, as shown in fig. 3 and 7, the driving direction of the driver 310 of the locking member 300 is the same as the first direction, taking the direction in which the locking tongue 100 is disengaged from the insertion direction of the key cylinder 200 as the first direction. Specifically, as shown in the front-back direction in fig. 3, which is the direction in which the locking tongue 100 is disengaged from and inserted into the lock cylinder 200, the driving direction of the driver 310 is the same as that of the driver, that is, the driver 310 can adopt linear reciprocating driving, so as to reduce the complexity, and thus, when the driver 310 is driven, the limitation and the release of the locking arm 210 can be realized, thereby avoiding the use of excessive force transmission components, optimizing the overall layout, and reducing the cost.

In some embodiments of the present application, the locking member 300 is configured to act under predetermined conditions to limit the movement of the locking arm 210. Specifically, the preset condition may be set to a preset temperature, the dishwasher may sequentially pre-wash, rinse, dry in one washing cycle, and may generally use cold water or warm water to perform in the pre-washing, and may use high-temperature water to perform in the rinsing, the preset condition is designed as a temperature value in the rinsing stage, and the dishwasher may control the locking member 300 to lock in the set washing time sequence when operating the rinsing stage, so that it may prevent the user from mistakenly opening the door and causing an injury. It can be understood that the preset condition can be designed to be whether the washing pump of the dishwasher works or not, the water flow can be ejected from the spray arm when the washing pump works, the locking piece 300 is controlled to limit the locking arm 210 when the washing pump works, and no matter what stage the dishwasher is, the injury caused by the mistaken opening of the door can be prevented; a micro switch may be provided to control locking element 300 to lock when it is detected that locking tongue 100 is inserted, and the preset condition is that locking tongue 100 and lock cylinder 200 are closed. For other appliances, such as washing machines, the rotation speed can be used as the preset condition, and for ovens, the temperature can be used as the preset condition.

Further, the driver of the locking element 300 is a component that performs a corresponding action after being powered on, and specifically, the driver 310 of the locking element 300 is a wax motor. A 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, expands, and drives 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 the operation of the dishwasher, when a signal requiring the locker 300 to be locked is received, the driver 310 is powered on to drive the latch 320 to move, and when a signal requiring the locker 300 to be unlocked is received, the driver 310 is powered off to drive the latch 320 to be reset. In addition, due to the wax motor, when the locking member 300 is in a locked state and the power failure of the whole machine occurs suddenly, the lock bolt 320 can be reset, and a user can pull the door body normally.

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, and the upper housing 410 is connected to the lower housing 420 to form a receiving space in which the lock cylinder 200 and the locking member 300 are disposed. Specifically, two lock arms 210 are rotatably mounted on the lower housing 420, a spring is disposed between the two lock arms 210, the driver 310 and the latch 320 are mounted on the lower housing 420, the upper housing 410 is connected to the lower housing 420 as a cover, and a notch 421 is disposed on the lower housing 420 for the latch 100 to enter and exit. The present embodiment facilitates the installation to the dishwasher by integrating the key cylinder 200 and the locking member 300 into one integrated part by means of the upper and lower cases 410 and 420.

Further, as shown in fig. 1 and 5, the door lock further comprises a micro switch 530, and the micro switch 530 is used for being triggered when the locking member 300 restricts the movement of the locking arm 210. Specifically, to alert the user that the dishwasher is locked, a signal is generated by activating the micro switch 530 while the lock 300 is in operation to generate a locked message on the display interface of the dishwasher.

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

Can know by the aforesaid, the lock that this application disclosed can be applied to in multiple equipment, uses when dish washer, can prevent effectively that dish washer door from being opened by the mistake, has improved dish washer safety in utilization.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the subject matter of the present application, which is conceived to be equivalent to the above description and the accompanying drawings, or to be directly/indirectly applied to other related arts, are intended to be included within the scope of the present application.

Claims (16)

1. A door lock, comprising:

a latch bolt;

the lock core comprises a pair of lock arms, and the two lock arms can be movably arranged to lock or release the lock tongue; and

a locking member for restricting movement of the locking arm.

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

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

4. The door lock of claim 3, wherein said locking arm defines a pivot axis about which said locking arm pivots and a positive stop, said locking member being adapted to extend between or retain two positive stops to limit pivoting of said two locking arms.

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

6. The door lock of claim 3, wherein the locking member includes a driver and a latch, the latch being provided at a driving end of the driver;

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

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

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

8. The door lock according to claim 7, wherein the first engaging member is provided at a rotation center of the corresponding lock arm, and the second engaging member is provided at a rotation center of the corresponding lock arm;

and/or the first meshing part and the second meshing part are of gear structures.

9. The door lock of claim 7, wherein the first engaging member is provided with an extension bar;

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 rotating direction of the extension rod to abut against the extension rod.

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

11. The door lock of claim 1, wherein the direction in which the latch bolt is disengaged from and inserted into the key cylinder is a first direction, and the 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 the key cylinder and the locking member are disposed in the receiving space.

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

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

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

15. The door lock of claim 14, wherein the locking member includes a driver and a latch, the latch being provided at a driving end of the driver, the driver being configured to drive the latch to restrict rotation of both of the 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 the button of the micro switch.

16. A dishwasher comprising a housing, a door and the door lock of any one of claims 1 to 15, one of the bolt and the lock cylinder being located on the door and the other being located on the housing.

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