CN117627463A - 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 cylinder and a locking piece, wherein the lock cylinder is used for locking or releasing the lock tongue, and the locking piece is used for limiting the movement of the lock cylinder or the lock tongue. According to the door lock, the mechanical protection device, namely the locking piece, is additionally arranged, and the lock core or the lock tongue is limited in movement by the locking piece, so that the lock tongue and the lock core can be prevented from being separated from each other under the action of external force, and the door lock can be prevented from being damaged by misoperation of the door body when being applied to household equipment such as a dish washer.

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 comprising

A bolt;

the lock cylinder is used for locking or releasing the lock tongue, and a limiting piece is arranged on the lock cylinder or the lock tongue; and

the locking piece comprises a first driver and a lock bolt, wherein the lock bolt is arranged at the driving end of the first driver and is used for driving the lock bolt to move to the limiting piece so as to limit the movement of the lock cylinder or the lock bolt.

In some embodiments of the present application, the limiting member is disposed on the lock tongue, a first clamping groove is formed between the limiting member and the lock tongue, and the first driver is used for driving the lock tongue to move to the first clamping groove so as to limit the movement of the lock tongue.

In some embodiments of the present application, the limiting member is a locking protrusion, the lock tongue includes a rod body, the locking protrusion is located at an end of the rod body, and the first clamping groove is formed between the rod body and the locking protrusion.

In some embodiments of the present application, the clip protrusion is integrally formed with the stem body.

In some embodiments of the present application, the direction in which the lock tongue is separated from and inserted into the lock core is a first direction, the direction perpendicular to the first direction is a second direction, the lock bolt and the first driver are sequentially arranged on one side of the lock tongue in the second direction, and/or the locking piece is arranged on one side of the lock tongue in the second direction, and the lock core is arranged on the other side of the lock tongue in the second direction.

In some embodiments of the present application, the lock cylinder includes a tumbler rotatably disposed between a first position and a second position, the tumbler being located in the first position and locked with the lock tongue when the lock cylinder locks the lock tongue, the tumbler being located in the second position and separated from the lock tongue when the lock cylinder releases the lock tongue;

the rotating arm is provided with a connecting rod, and the limiting piece is arranged on the connecting rod.

In some embodiments of the present application, the limiting member is disposed at an end of the connecting rod, and the limiting member is integrally formed with the connecting rod.

In some embodiments of the present application, the direction in which the lock tongue is separated from and inserted into the lock cylinder is a first direction, and the direction perpendicular to the first direction is a second direction, and the rotating arm, the lock bolt and the first driver are sequentially arranged at one side of the lock tongue in the second direction.

In some embodiments of the present application, the lock cylinder includes a rotating arm, the rotating arm is provided with a claw, a deflector rod and a connecting rod, the claw, the deflector rod and the connecting rod are intersected and provided with a rotation axis, and the rotating arm can rotate around the rotation axis;

in the process that the lock cylinder locks the lock tongue, the lock tongue acts on the deflector rod to enable the rotating arm to rotate, so that the claw locks the lock tongue; in the process of releasing the lock tongue by the lock cylinder, the lock tongue acts on the claw to enable the rotating arm to rotate, so that the claw releases the lock tongue.

In some embodiments of the present application, the locking bolt includes a rod body, the rod body is provided with a second clamping groove, and the claw can be embedded into the second clamping groove to lock the locking bolt.

In some embodiments of the present application, the lock cylinder includes a tumbler rotatably disposed between a first position and a second position, the tumbler being located at the first position and locked with the lock tongue when the lock cylinder locks the lock tongue, and the tumbler being located at the second position and separated from the lock tongue when the lock cylinder releases the lock tongue;

the door lock further includes a drive for generating a force on the tumbler to rotate the tumbler to switch from the first position to the second position.

In some embodiments of the present application, the driving member includes:

the swing rod is rotatably arranged; and

and the second driver drives one end of the swing rod to enable the other end of the swing rod to rotate so as to act on the rotating arm, so that the rotating arm rotates to be switched from the first position to the second position.

In some embodiments of the present application, the swing arm further includes a compression spring, the compression spring is disposed at the other end of the swing rod, one extending end of the compression spring is rotationally connected with the swing arm, and the other extending end of the compression spring is connected with the swing rod.

In some embodiments of the present application, the compression spring sequentially passes through a deformation state and a recovery state during the process of switching the rotating arm from the first position to the second position or from the second position to the first position.

In some embodiments of the present application, an installation space is formed between the rotating arm and the lock bolt of the locking member, and the swing rod is located in the installation space.

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

the upper shell, the lower shell or a sliding rail is arranged between the upper shell and the lower shell, and the lock plunger of the locking piece can reciprocate in the sliding rail under the action of the first driver of the locking piece.

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

In some embodiments of the present application, the first actuator of the door lock is a wax motor; and/or, the second driver of the door lock is a wax motor.

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 lock core is located the door body, another one is located the organism.

According to the door lock, the mechanical protection device, namely the locking piece, is additionally arranged, and the lock core or the lock tongue is limited in movement by the locking piece, so that the lock tongue and the lock core can be prevented from being separated from each other under the action of external force, and the door lock can be prevented from being damaged by misoperation of the door body when being applied to household equipment such as a dish washer.

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 diagram of a lock tongue and lock core separation structure of a door lock according to some embodiments of the present application;

fig. 2 is a schematic view of a closing structure 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 locking member of a door lock according to some embodiments of the present application;

FIG. 4 is an exploded view of a door lock according to some embodiments of the present application;

fig. 5 is a schematic diagram of a lock tongue and lock core separation structure of a door lock according to some embodiments of the present application;

fig. 6 is a schematic view of a latch bolt and lock cylinder closure structure of a door lock according to some embodiments of the present application;

FIG. 7 is a schematic view of a locking member locking state structure of a door lock according to some embodiments of the present application;

fig. 8 is a schematic view illustrating an operating state of a driving member of a door lock according to some embodiments of the present application.

Reference numerals illustrate:

spring bolt 100, rod body 110, clamping convex 120, convex cambered surface 121, first clamping groove 130 and second clamping groove 140;

lock cylinder 200, rotary arm 210, connecting rod 211, deflector rod 212, claw 213, and compression spring 220;

a locking member 300, a first driver 310, a latch 320, a notch 321;

the driving piece 400, the second driver 410, the push rod 420, the swing rod 430 and the mounting column 431;

an upper housing 510, a lower housing 520, a slide rail 521, an installation space 522, a notch 523;

lever 610, microswitch 620, spring 630.

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 under specific conditions, 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 to 4, the door lock includes the latch bolt 100, the lock cylinder 200, and the locking member 300. In some embodiments, the lock tongue 100 may be disposed on a door body, the lock cylinder 200 may be disposed on a machine body, and in other embodiments, the lock tongue 100 may be disposed on a machine body, and the 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 practical situations. In this embodiment, the case where the latch bolt 100 is provided in a door body and the lock cylinder 200 is provided in a machine body will be described as an example.

Generally, the bolt 100 may be made of metal material, such as iron, aluminum, etc., and has a high strength, and the bolt 100 is fixed to the top of the door body by a threaded fastener. The door body has interior door body and outer door body, and the top of interior door body forms the installation position that is used for installing spring bolt 100, spring bolt 100 can screw thread fastening is in the installation position on the interior door body. The lock tongue 100 can move along with the movement of the door body, when the door body needs to be closed, the lock tongue 100 is inserted into the lock cylinder 200 along with the door body so as to be locked by the lock cylinder 200, and the door body is in a closed state at the moment; when the door body needs to be opened, the lock tongue 100 is separated from the lock cylinder 200 along with the door body, and the door body is in an opened state. As such, the door body is opened and closed by pulling or pushing the door body, and in some cases the door body may be opened by a user's misoperation, so by providing the locking member 300, the locking member 300 can automatically restrict the movement of the latch bolt 100 or the latch core 200 when the dishwasher reaches a certain operation condition, thereby preventing the separation of the latch bolt 100 and the latch core 200.

Specifically, when the locking member 300 restricts the movement of the locking bolt 100, the locking bolt 100 cannot be opened along with the opening of the door body, wherein the restriction is that a great obstruction is applied to the locking bolt 100, so as to prevent the door body from being forcibly pulled open, or the resistance of the door body to be opened can be greatly increased, so that a user can recognize that the door body cannot be opened at the moment, so as to prevent the door body from being opened due to the separation of the locking bolt 100 and the lock cylinder 200. The specific structures of the different lock bolts 100 and lock cylinders 200 are different, so that the lock bolts 100 and lock cylinders 200 can be locked or released in various ways, but the lock bolts 100 must follow the movement of the door body, so long as the locking piece 300 can restrict the lock bolts 100 to follow the movement of the door body.

It will be appreciated that when lock cylinder 200 is inserted into lock cylinder 100, lock cylinder 200 must perform a corresponding movement to lock cylinder 100 when lock cylinder 100 is inserted into lock cylinder 200, and also when lock cylinder 100 is disengaged from lock cylinder 200, lock cylinder 200 must perform a corresponding movement to release lock cylinder 100 when lock cylinder 100 is disengaged from lock cylinder 200, so that restricting movement of lock cylinder 200 by lock 300 also provides a greater barrier to lock cylinder 100 from lock cylinder 200, and thus allows locking when lock 300 is required, preventing a user from opening the door by mistake.

From the above, when the locking member 300 does not work, the lock tongue 100 and the lock cylinder 200 can normally realize the opening and closing of the door body, and when the locking member 300 works, the mechanical protection device is added on the lock structure formed by the lock tongue 100 and the lock cylinder 200, and the lock tongue 100 or the lock cylinder 200 is restrained by the locking member 300, so that the door body can be effectively prevented from being pulled out forcibly, or the resistance of the door body to be pulled out is greatly increased, and the danger is avoided. 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 of high-temperature and high-pressure water flow, if the door body is forcibly pulled open at this time, the high-temperature and high-pressure water flow is easily sprayed out of the dishwasher, so that injury to a user is caused, and the occurrence of the situation is effectively avoided through the action of the locking piece 300.

As shown in fig. 1, in some embodiments of the present application, the latch bolt 100 is provided with a stopper, the locking member 300 includes a first driver 310 and a latch 320, and the latch 320 is disposed at a driving end of the first driver 310; the first driver 310 is used to drive the latch 320 to move to a stopper of the latch bolt 100 to restrict the movement of the latch bolt 100. Specifically, the first driver 310 is a component that performs a corresponding action after being electrified, the first driver 310 may take various forms, for example, a reciprocating driver, a rotary driver, etc., as long as it can drive the lock bolt 320 to move, in this embodiment, a reciprocating driver is used, which can drive the lock bolt 320 to reciprocate, when the lock member 300 is required to lock, the dishwasher sends a signal, the first driver 310 drives the lock bolt 320 to move to the limiting member of the lock bolt 100, and when the lock member 300 is not required to lock, the first driver 310 drives the lock bolt 320 to reset. It should be understood that the limiting member herein may be a structure that may cooperate with the locking bolt 320, so that the locking bolt 320 may block the movement of the locking bolt 100 when the locking bolt 100 is about to move, for example, the limiting member of the locking bolt may be a slot structure, a through hole structure, or the like.

Specifically, as shown in fig. 1, in some embodiments of the present application, the limiting member is a locking protrusion 120, the lock tongue 100 includes a rod body 110, the locking protrusion 120 is located at the end of the rod body 100, and the first locking groove 130 is formed between the rod body 110 and the locking protrusion 120.

As shown in the figure, the locking bolt 100 includes the rod 110, the width of the locking protrusion 120 is greater than that of the rod 110, and the locking protrusion 120 and the rod 110 may be integrally formed with each other, so as to have higher strength. The first clamping groove 130 and the second clamping groove 140 are formed between the clamping protrusion 120 and the rod body 110, the first clamping groove 130 and the second clamping groove 140 are symmetrically distributed, and the protruding arc surface 121 is formed on the clamping protrusion 120 towards the lock cylinder 200. The first clamping groove 130 is formed in the direction that the lock tongue 100 is separated from the lock cylinder 200, the first clamping groove 130 is approximately at a right angle, when the lock bolt 320 is driven by the first driver 310 to extend into the first clamping groove 130, the lock bolt 320 and the first clamping groove 130 form surface contact in the direction that the lock tongue 100 is separated from the lock cylinder 200, and the contact surface is perpendicular to the direction that the lock tongue 100 is separated from the lock cylinder 200, so that the effect that the lock bolt 320 blocks the lock tongue 100 is greatly enhanced, and the lock tongue 100 is effectively prevented from being forcibly separated from the lock cylinder 200 under the action of external force (pulled by a user).

Further, as shown in fig. 1 to 3, the lock cylinder 200 includes a rotating arm 210, the rotating arm 210 is provided with a claw 213, a driving lever 212 and a connecting rod 211, the claw 213, the driving lever 212 and the connecting rod 211 are intersected and provided with a rotation axis at the intersection, and the rotating arm 210 can rotate around the rotation axis;

during the process of locking lock cylinder 200 to lock bolt 100, lock bolt 100 acts on lever 212 to rotate arm 210, so that pawl 213 locks lock bolt 100; during the process of releasing lock cylinder 200 from lock tongue 100, lock tongue 100 acts on pawl 213 to rotate arm 210, so that pawl 213 releases lock tongue 100.

Specifically, the claw 213, the lever 212, and the link 211 are integrally formed to form the rotary arm 210, and are rotatably disposed around a rotation axis, the end of the link 211 is provided with the compression spring 220, one extension end of the compression spring 220 is inserted into the end of the link 211 and is rotatably disposed with the end of the link 211, and the other extension end of the compression spring 220 is inserted into a lower housing 520 mentioned below and is rotatably disposed with the lower housing 520. When the door body is in the closed state, the rotating arm 210 is located at the first position, and at this time, the compression spring 220 is in a deformed state or in an uncompressed state, and if the compression spring 220 is in a deformed state (for example, in a compressed state), the compression spring 220 has a force to the rotating arm 210, and the rotating arm 210 is kept at the first position. When the door body is opened, the lock tongue 100 generates a force to the claw 213 through the clamping protrusion 120, and then the whole rotating arm 210 rotates (clockwise) along with the movement of the lock tongue 100, at this time, the pressure spring 220 rotates (anticlockwise) along with the action of the connecting rod 211 and compresses to the maximum value, and as the movement of the lock tongue 100 is separated from the claw 213, the pressure spring 220 recovers deformation, so that the rotating arm 210 is pushed to be kept at the second position. When the door body is closed, the lock tongue 100 generates a force to the deflector rod 212 through the clamping protrusion 120, and as the end surface of the clamping protrusion 120 is the protruding arc surface 121, the contact area with the deflector rod 212 is reduced, the resistance is effectively reduced, the whole rotating arm 210 rotates (anticlockwise) along with the movement of the lock tongue 100, at this time, the pressure spring 220 rotates (clockwise) along with the action of the connecting rod 211 and compresses to the maximum value, the claw 213 is embedded into the second clamping groove 140 along with the movement of the lock tongue 100 to the preset position, and the pressure spring 220 is deformed in a restoration manner, so that the rotating arm 210 is pushed to be kept at the first position. The rotation plane of the rotary arm 210 and the rotation plane of the compression spring 220 are coplanar or parallel to each other, which is advantageous for the whole door lock to be improved in a thinner direction.

As shown in fig. 1 to 3, in some embodiments of the present application, the direction in which the lock tongue 100 is detached from and inserted into the lock cylinder 200 is a first direction (front-rear direction in the drawing), and the direction perpendicular to the first direction is a second direction (left-right direction in the drawing), and the lock bolt 320 and the first driver 310 are sequentially arranged at one side of the lock tongue 100 in the second direction. Specifically, the first driver 310 is a linear reciprocating driver, the lock bolt 320 and the first driver 310 are sequentially distributed and arranged on one side of the lock bolt 100, so that the space of the lock can be effectively utilized, and by means of the arrangement, the moving direction of the lock bolt 320 and the direction of the lock bolt 100 separating from the lock core 200 are perpendicular to each other, and the force generated by the clamping protrusion 120 on the lock bolt 100 on the lock bolt 320 is perpendicular to the lock bolt 320, so that the blocking effect of the lock bolt 320 on the lock bolt 100 can be greatly enhanced. Further, since the movable forms of the locking member 300 and the lock cylinder 200 are different, in order to avoid overcrowding of the parts, the locking member 300 is disposed on the left side of the lock tongue 100 in the second direction, and the lock cylinder 200 (the rotating arm 210) is disposed on the right side of the lock tongue 100 in the second direction, thus, the cost is effectively reduced, and the interference between the movement of the locking member 300 and the rotating arm 210 is avoided, so that the volume of the door lock is effectively reduced, and the door lock is more beneficial to miniaturization.

In the above embodiments, the case where the locking member 300 locks the locking bolt 100 is described, and the case where the locking member 300 locks the lock cylinder 200 is described. As shown in fig. 5, the limiting member is disposed on the lock cylinder 200, the locking member 300 includes the first driver 310 and the lock bolt 320, and the lock bolt 320 is disposed on the driving end of the first driver 310; the first driver 310 is used to drive the lock cylinder 320 to move to a limit stop of the lock cylinder 200 to limit the movement of the lock cylinder 200. Unlike some of the previous embodiments, the lock 300 in this embodiment instead limits the movement of the lock cylinder 200. It will be appreciated that during the locking or releasing of lock tongue 100 and lock cylinder 200, as lock tongue 100 moves and lock cylinder 200 requires a certain degree of corresponding movement, thus restricting movement of lock cylinder 200 by restricting movement of lock cylinder 200, thus preventing movement of lock tongue 100 and thus preventing the door from being opened.

Specifically, as shown in fig. 5 to 8, the lock cylinder 200 includes a rotating arm 210, the rotating arm 210 has a claw 213, a lever 212, and a link 211, a stopper is provided on the link 211, the lock tongue 100 rotates the entire rotating arm 210 by generating a force to the lever 212 when the door body is closed, and the lock tongue 100 rotates the entire rotating arm 210 by generating a force to the claw 213 when the door body is opened. When the locking member 300 is required to be locked, the rotation of the whole rotating arm 210 can be restricted by the locking member 300 acting to limit the limiting member of the connecting rod 211. Since the claw 213 and the lever 212 are both used for generating corresponding actions with the lock tongue 100, the restriction of the locking member 300 to the rotating arm 210 is realized by the connecting rod 211, which avoids interference to the corresponding actions between the claw 213 and the lever 212 and the lock tongue 100, and is more beneficial to arrangement of parts.

Further, as shown in fig. 5 to 8, the limiting member is disposed at the end of the connecting rod 211, and the limiting member and the connecting rod 211 are integrally formed. Specifically, the rotary arm 210 formed by the claw 213, the lever 212 and the link 211 rotates around the rotation axis, the end of the link 211 is provided with a limiting member, and the distance from the end to the rotation axis corresponds to a longer force arm, which is equivalent to that of greatly improving the blocking effect by leverage. Specifically, as shown in fig. 5 and 8, the direction in which lock tongue 100 is detached from and inserted into lock cylinder 200 is a first direction (front-rear direction in the drawing), and the direction perpendicular to the first direction is a second direction (left-right direction in the drawing), and the swivel arm 210, the lock bolt 320, and the first actuator 310 are sequentially arranged on one side of lock tongue 100 in the second direction. The design makes the movement of the rotating arm 210, the lock plunger 320 and the first driver 310 not interfere with each other, thereby effectively utilizing the internal space and reducing the occupied volume of the door lock.

Specifically, as shown in fig. 6 to 8, the limiting member at the end of the connecting rod 211 is an arc surface, the end of the lock plunger 320 is provided with the corresponding notch 321, and when the lock plunger 320 moves in place, the end of the connecting rod 211 is embedded into the notch 321, so as to effectively prevent the connecting rod 211 from breaking loose. In addition, the structure of the lock bolt 320 is L-shaped, which is more suitable for the position setting of the first driver 310, and fully utilizes the internal space of the door lock, so as to avoid the occupation of the external space caused by the excessive protrusion of some parts of the first driver 310.

In order for locking or releasing of locking bolt 100 and lock cylinder 200 to generate corresponding information, in some embodiments, as shown in fig. 1-3, the door lock further includes a micro switch 620, micro switch 620 being configured to be triggered when tumbler 210 rotates. The rotation of the rotary arm 210 may directly touch the micro switch 620 or indirectly touch the micro switch 620, for example, the door lock further includes a lever 610, one end of the lever 610 is used to connect with the lever 212, and the other end of the lever 610 is used to touch a button of the micro switch 620. When lock tongue 100 and lock cylinder 20 are closed, rotary arm 200 rotates counterclockwise, lever 610 is rotated clockwise by lever 212, spring 630 compresses, and lever 610 and micro switch 620 are separated. When lock tongue 100 and lock cylinder 200 are separated, rotary arm 200 rotates clockwise, lever 212 is gradually separated from lever 610, and lever 610 rotates counterclockwise to touch micro switch 620 under the action of spring 630. As can be seen from the description of the above embodiments, in the present application, by adding the mechanical locking structure, that is, the locking member 300, on the basis of the lockable or releasable lock tongue 100 and lock cylinder 200, the locking member 300 can restrict the lock tongue 100 or lock cylinder 200, so as to avoid the lock tongue 100 and lock cylinder 200 from being forcibly separated under the locked state, and effectively prevent the user, especially the child, from being injured by the false door opening when the door lock is applied to the home appliance such as the dish washer.

In some embodiments of the present application, as shown in fig. 5 to 8, the door lock further includes the driving member 400, and the driving member 400 is configured to generate a force on the rotating arm 210 to rotate the rotating arm 210 to switch from the first position to the second position. Specifically, by providing driver 400, automatic separation of lock tongue 100 and lock cylinder 200 can be achieved when lock 300 is in the unlocked state. The same rotating arm 210 realizes the locking of the locking piece 300 and the automatic opening of the driving piece 400, so that the functionality of the door lock is greatly enhanced, and the door lock is suitable for more different product scenes. Taking a dish washer as an example, the dish washer can sequentially perform pre-washing, rinsing and drying in a washing cycle, the rinsing stage is usually high-temperature rinsing, the tableware needs to be dried after the rinsing stage is finished, the locking piece 300 is used for locking in the rinsing stage, the driving piece 400 is used for generating force on the rotating arm 210 in the drying stage, the rotating arm 210 rotates to release the lock tongue 100, the door body realizes the effect of automatic opening, the tableware still keeps higher temperature just after the rinsing stage is finished, and the water on the tableware can be evaporated under the residual temperature after the door body is opened, so that the drying purpose is achieved, and the high-temperature high-humidity water in the washing cavity of the dish washer can escape, and the drying effect is further improved.

Further, as shown in fig. 8, the driving member 400 includes the swing link 430, and the swing link 430 is rotatably disposed; and the second driver 410 drives one end (right end) of the swing link 430 to rotate the other end (left end) of the swing link 430 to act on the rotating arm 210, so that the rotating arm 210 rotates to switch from the first position to the second position. Specifically, the swing rod 430 plays a role in transmitting force, and by setting the middle piece of the swing rod 430, the force of the second driver 410 can be transmitted, so that the second driver 410 can be a simpler reciprocating driver, the complexity of the door lock is reduced, and the inner space of the door lock can be fully utilized.

Specifically, the compression spring 220 is disposed at the other end (left end) of the swing link 430, one extending end of the compression spring 220 is rotatably connected to the rotating arm 210, and the other extending end of the compression spring 220 is inserted into the rotating arm 210. As shown in fig. 5, the rotating arm 210 has the connecting rod 211, the other end (left end) of the swing rod 430 is provided with the mounting post 431, the pressure spring 220 is sleeved on the mounting post 431, or the pressure spring 220 is adhered and fixed to the mounting post 431, the tail end of the connecting rod 211 is provided with a mounting hole, one extending end of the pressure spring 220 is inserted into the mounting hole and is rotatable, and the other extending end of the pressure spring 220 is inserted into the swing rod 430.

The working process is as follows, the second driver 410 may directly drive the swing rod 430, or may indirectly drive the swing rod 430, and in this embodiment, force transmission is achieved by setting the push rod 420, so that arrangement of components is facilitated. When the door body is in a closed state, if the door body is to be opened, the second driver 410 drives the push rod 420 to move, the push rod 420 acts on the right end of the swing rod 430 to enable the swing rod 430 to rotate, the swing rod 430 drives the pressure spring 220 to rotate along with the rotation, the pressure spring 220 drives the connecting rod 211 to enable the whole rotating arm 210 to rotate, in this process, the pressure spring 220 compresses, when the pressure spring 220 compresses to the maximum value, the rotating arm 210 is separated from the lock tongue 100 to a certain extent because the pressure spring 220 begins to reset and generates a force on the rotating arm 210, the rotating arm 210 is kept in the second position, and at the moment, the second driver 410 can be powered off, and the second driver 410 drives the push rod 420 to reset. When the door body is closed, the spring bolt 100 pushes the deflector 212, the whole rotating arm 210 rotates (anticlockwise) along with the movement of the spring bolt 100, the pressure spring 220 and the swing rod 430 are driven to rotate clockwise, in the process, the pressure spring 220 is compressed to the maximum value, when the spring bolt 100 reaches a preset position, the rotating arm 210 has rotated a certain degree, the pressure spring 220 is switched to reset from the compression to the maximum value, and a force is generated on the rotating arm 210, so that the rotating arm 210 is kept at the first position.

In some embodiments of the present application, as shown in fig. 5, 6 and 7, the installation space 522 is formed between the rotation arm 210 and the latch 320 of the locking member 300, and the swing link 430 is located in the installation space 522. Specifically, since the rotating arm 210 is configured to be rotatably disposed, and the movable linear reciprocating type of the locking member 320 is configured to be different from the movable type of the two structures, the rotating arm 210 and the locking member 300 are arranged in such a manner that a sufficient space is provided for the swing link 430 on the premise of ensuring the normal operation of the respective components, so that the swing link 430 is not disturbed in controlling the movement of the compression spring 220.

In some embodiments of the present application, as shown in fig. 1, the door lock further includes the upper housing 510 and the lower housing 520, the upper housing 510 and the lower housing 520 are connected to form a receiving space, and the lock cylinder 200 and the locking member 300 are disposed in the receiving space;

the upper housing 510, the lower housing 520, or the sliding rail 521 is provided between the upper housing 510 and the lower housing 520, and the latch 320 of the locking member 300 may reciprocate in the sliding rail 521 under the action of the first driver 310 of the locking member 300.

Specifically, the locking member 300, the driving member 400 and the lock cylinder 200 are mounted on corresponding positions of the lower housing 520, the upper housing 510 is connected to the lower housing 520 as a cover, and the lower housing 520 is provided with the notch 523 (not shown) for allowing the locking bolt 100 to enter and exit. The slide rail 521 may be disposed on the upper case 510, or disposed on the lower case 520, or disposed between the upper case 510 and the lower case 520, and may have a certain restraining and guiding function on the latch 320, preventing the latch 320 from being deflected, and enhancing the structural strength of the lower case 520, thereby enhancing the stability of the latch 320 when the latch 100 is acted upon. In this embodiment, the upper housing 510 and the lower housing 520 are assembled into one integral part, so as to facilitate the installation of the door lock. Taking dish washer as an example, dish washer has the inner bag, and the opening that encircles the inner bag is provided with the round strengthening rib, and the effect of strengthening rib lies in strengthening the structural strength of whole inner bag, prevents that the inner bag from taking place to warp, and the strengthening rib generally is provided with the mounted position of lock, installs the lock that upper casing 510 and lower casing 520 combined into on the strengthening rib, locks with the screw then, just so can fix, easy to assemble.

In some embodiments of the present application, lock 300 is configured to act under preset conditions to limit movement of lock cylinder 200 or locking bolt 100. 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 hot 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 false opening of the door by a user 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 flow can be emitted from the spray arm, and when the washing pump works, the locking piece 300 is controlled to limit the lock tongue or the lock core, and 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.

In some embodiments of the present application, the first driver 310 of the locking member 300 and the second driver 410 of the driving member 400 are components that perform corresponding actions after being energized, and in particular, the first driver 310 and the second driver 410 are wax motors. 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 first driver 310 is energized to drive the latch 320 to move when a signal that the locking member 300 is required to be locked is received, and the first driver is de-energized to drive the latch 320 to reset when a signal that the locking member 300 is required to be unlocked is received. In addition, since the wax motor is adopted, when the locking member 300 is in a locked state and the complete machine is suddenly powered off, the lock bolt 320 can be reset, and the user can normally pull the door body open. For the second driver 410, when a signal for automatically opening the door is received, the second driver 410 is powered on to drive the push rod 420 to move, and then the second driver 410 is powered off to drive the push rod 420 to reset, and at this time, the push rod 420 is separated from the swing rod 430.

As can be seen from the foregoing, the present application discloses a door lock, which can be applied to a dishwasher or other devices, wherein the door lock has a lock tongue 100 and a lock core 200, the lock tongue 100 and the lock core 200 form a door lock structure, that is, the door body can be closed and opened by closing or releasing the lock tongue 100 and the lock core 200, it can be understood that the door body is closed and opened under the condition of external force, for example, a user pushes the door body to close, at this time, the lock tongue 100 and the lock core 200 are closed, the user pushes the door body to open, at this time, the lock core 200 releases the lock tongue 100, and the lock core 200 and the lock tongue 100 are separated from each other. On the basis, a mechanical protection device locking piece 300 is added, and the locking piece is a physical protection structure and can be used for limiting the movement of the lock cylinder 200 or the lock tongue 100, so that the dish washer can control the locking piece 300 to lock when the locking piece 300 is required to lock, and the door body can be effectively prevented from being opened.

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 (20)

1. A door lock, comprising:

a bolt;

the lock cylinder is used for locking or releasing the lock tongue, and a limiting piece is arranged on the lock cylinder or the lock tongue; and

the locking piece comprises a first driver and a lock bolt, wherein the lock bolt is arranged at the driving end of the first driver and is used for driving the lock bolt to move to the limiting piece so as to limit the movement of the lock cylinder or the lock bolt.

2. The door lock according to claim 1, wherein the limiting member is disposed on the lock tongue, a first clamping groove is formed between the limiting member and the lock tongue, and the first driver is configured to drive the lock bolt to move to the first clamping groove so as to limit the movement of the lock tongue.

3. The door lock according to claim 2, wherein the limiting member is a locking protrusion, the locking tongue includes a rod body, the locking protrusion is located at an end of the rod body, and the first locking groove is formed between the rod body and the locking protrusion.

4. A door lock according to claim 3, wherein the latch is integrally formed with the lever body.

5. The door lock according to claim 2, wherein the direction in which the lock bolt is separated from and inserted into the lock cylinder is a first direction, the direction perpendicular to the first direction is a second direction, the lock bolt and the first driver are sequentially arranged on one side of the lock bolt in the second direction, and/or the locking piece is arranged on one side of the lock bolt in the second direction, and the lock cylinder is arranged on the other side of the lock bolt in the second direction.

6. The door lock of claim 1, wherein the lock cylinder includes a tumbler rotatably disposed between a first position and a second position, the tumbler being in the first position and locked with the lock tongue when the lock cylinder locks the lock tongue, the tumbler being in the second position and separated from the lock tongue when the lock cylinder releases the lock tongue;

the rotating arm is provided with a connecting rod, and the limiting piece is arranged on the connecting rod.

7. The door lock of claim 6, wherein the retainer is disposed at a distal end of the link, and the retainer is integrally formed with the link.

8. The door lock according to claim 7, wherein the direction in which the lock tongue is disengaged from and inserted into the lock cylinder is a first direction, and the direction perpendicular to the first direction is a second direction, and the swivel arm, the lock bolt, and the first driver are sequentially arranged on one side of the lock tongue in the second direction.

9. The door lock according to claim 1, wherein the lock cylinder comprises a rotating arm, the rotating arm is provided with a claw, a deflector rod and a connecting rod, the claw, the deflector rod and the connecting rod are arranged in an intersecting way, a rotation axis is arranged at the intersecting part, and the rotating arm can rotate around the rotation axis;

in the process that the lock cylinder locks the lock tongue, the lock tongue acts on the deflector rod to enable the rotating arm to rotate, so that the claw locks the lock tongue; in the process of releasing the lock tongue by the lock cylinder, the lock tongue acts on the claw to enable the rotating arm to rotate, so that the claw releases the lock tongue.

10. The door lock of claim 9, wherein the locking bolt comprises a lever body provided with a second clamping groove, and the claw is embedded in the second clamping groove to lock the locking bolt.

11. The door lock of claim 9, further comprising a micro switch for being triggered when the tumbler rotates.

12. The door lock of claim 11, further comprising a lever having one end for connecting with the lever and the other end for touching a button of the micro switch.

13. The door lock of claim 1, wherein the lock cylinder includes a tumbler rotatably disposed between a first position and a second position, the tumbler being in the first position and locked with the lock tongue when the lock cylinder locks the lock tongue, the tumbler being in the second position and separated from the lock tongue when the lock cylinder releases the lock tongue;

the door lock further includes a drive for generating a force on the tumbler to rotate the tumbler to switch from the first position to the second position.

14. The door lock of claim 13, wherein the actuating member comprises:

the swing rod is rotatably arranged; and

and the second driver drives one end of the swing rod to enable the other end of the swing rod to rotate so as to act on the rotating arm, so that the rotating arm rotates to be switched from the first position to the second position.

15. The door lock of claim 14, further comprising a compression spring, wherein the compression spring is disposed at the other end of the swing rod, one extending end of the compression spring is rotatably connected to the swing arm, and the other extending end of the compression spring is connected to the swing rod.

16. The door lock of claim 15, wherein the compression spring is successively subjected to a deformed state and a restored state during switching of the tumbler from the first position to the second position or from the second position to the first position.

17. The door lock of claim 14, wherein an installation space is formed between the rotating arm and the lock bolt of the locking member, and the swing link is located in the installation space.

18. The door lock according to claim 1, further comprising an upper housing and a lower housing, the upper housing being connected to the lower housing to form a receiving space, the lock cylinder and the locking member being provided in the receiving space;

the upper shell, the lower shell or a sliding rail is arranged between the upper shell and the lower shell, and the lock plunger of the locking piece can reciprocate in the sliding rail under the action of the first driver of the locking piece.

19. The door lock of claim 1, wherein the locking member is configured to act under preset conditions to limit movement of the lock cylinder or the locking bolt;

and/or, the first driver of the door lock is a wax motor;

and/or, the second driver of the door lock is a wax motor.

20. A dishwasher, comprising a body, a door body and a door lock according to any one of claims 1 to 19, one of the locking tongue and the lock cylinder being provided in the door body, the other being provided in the body.