CN115234087B - Door lock structure for household appliance and household appliance - Google Patents

Abstract

The invention relates to a door lock structure for a household appliance and the household appliance, wherein the door lock structure comprises a shell; a push rod; locking; the locating piece can locate in the casing along the third direction with moving, just the locating piece can with the second part of hasp inconsistent in order to restrict the rotation of hasp throughout, the wall of locating piece with the inconsistent wall of hasp includes first inclined plane portion, first inclined plane portion is in the forward direction slope of keeping away from the direction of hasp along the first direction, under the hasp is in the locked state, the second part of hasp offsets with the first inclined plane portion of locating piece. When the door is opened, the force to be overcome by the lock catch is large, so that the door body cannot be opened completely easily at one time, the door opening process is stable, and the safety is good; and because the door opening force is large, the door body is not easy to be opened by mistake.

Description

Door lock structure for household appliance and household appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to a door lock structure for a household appliance and the household appliance.

Background

For a case with a functional cavity, a door body capable of opening or covering the port is usually arranged at the port of the case due to functional requirements, and the door body needs to be locked relative to the case during the use of the case.

For example, chinese patent application No. CN200410043122.5, door opening and closing mechanism and dish washer having the same (application publication No. CN1550202 a), discloses a structure comprising: a door rotatably disposed for opening and closing a dish inlet provided in the dish washing machine, and a rotation assisting mechanism for applying a rotation assisting force to the door in association with a rotation operation of the door; the rotation assisting mechanism applies a rotation assisting force to the door in a closing direction when the door is in a range from a closed state to a predetermined angle. Although the door body can be locked on the tableware cleaning machine by the structure, the locking structure is complex, the dependence on electric components and control modes is high, the door lock action logic is complex, faults are easy to occur, and the reliability is low.

Aiming at the problems, the door lock structure for electric appliances and the cleaning machine using the door lock structure disclosed in Chinese patent application with the patent number of CN201910933576.6 (publication number of CN 112576111A) comprise a shell, a lock rod, an ejection piece, a lock catch and a driving mechanism, when the door body is closed, the ejection piece can be pressed downwards to drive the lower end of the lock catch to move downwards, so that the upper end of the lock catch of a C-shaped structure deflects upwards the ejection piece to be buckled with a C-shaped lock hook at the lower end of the lock rod, and the self-locking of the door body is realized; the door lock structure is realized by means of a mechanical structure, has low requirement on electric control logic and high reliability, and can reliably realize opening and closing of the door.

If the lock catch is easy to rotate when the door is opened, the door body can be opened easily, and when the door body is opened suddenly and completely, the hot steam in the liner can be easily blown out in a large area, so that a user can be easily scalded, and the safety is poor. For household appliances with built-in dangerous objects, such as a steam box, a cleaning machine, an oven and the like which have hot steam after the work is completed, good door closing force should be as small as possible to facilitate the closing of a user, and good door opening force should be as large as possible on the premise of not affecting the hand feeling of the user so as to ensure the door locking function.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a door lock structure with large door opening force for household appliances aiming at the current state of the art.

The second technical problem to be solved by the invention is to provide a door lock structure for a household appliance, which has a door opening force larger than a door closing force, aiming at the current state of the art.

The third technical problem to be solved by the invention is to provide a household appliance applying the door lock structure aiming at the current state of the art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a door lock structure for a home appliance includes

A first side wall of the shell is provided with a lock hole which penetrates through the wall thickness;

the ejector rod is arranged on one side of the first side wall of the shell, the ejector rod can move towards the direction close to the lock hole or far away from the lock hole, the ejector rod extends along the moving direction of the ejector rod, the first end of the ejector rod can penetrate through the lock hole to enable the ejector rod to be locally positioned in the shell, a locking opening is formed in the position, adjacent to the first end, of the ejector rod, the end part, located beside the locking opening, of the first end of the ejector rod is of a columnar structure, the moving direction of the ejector rod is defined as a first direction, and the moving direction of the ejector rod towards the direction far away from the lock hole is defined as the positive direction of the first direction;

the lock catch is rotationally arranged in the shell around an axis extending along the second direction, the lock catch is sequentially divided into a first part and a second part along the positive direction of the third direction, the first direction, the second direction and the third direction are mutually perpendicular to each other, the first part is close to the lock hole, a locking groove with a C-shaped opening is formed in the first part, the lock catch can rotate to a locking state that the locking groove limits the columnar structure of the ejector rod therein and locks the ejector rod, and the opening of the locking groove faces the lock hole to allow the columnar structure of the ejector rod to be separated from the unlocking state of the locking groove;

characterized in that it also comprises

The locating piece can locate in the casing along the third direction with moving, just the locating piece can with the second part of hasp inconsistent in order to restrict the rotation of hasp throughout, the wall of locating piece with the inconsistent wall of hasp includes first inclined plane portion, first inclined plane portion is in the forward direction slope of keeping away from the direction of hasp along the first direction, under the hasp is in the locked state, the second part of hasp offsets with the first inclined plane portion of locating piece.

The invention solves the second technical problem by adopting the technical proposal that: the wall surface of the locating piece, which is abutted against the lock catch, comprises a connected plane part and the first inclined surface part, wherein the plane part extends along the first direction, and the second part of the lock catch is abutted against the plane part of the locating piece when the lock catch is in an unlocking state.

In order to make the locating piece and the lock catch always collide, the door lock structure further comprises a first elastic piece which acts on the locating piece to enable the locating piece to always keep the contact trend with the lock catch.

In order to facilitate the lock catch to prop against the first inclined surface part and the plane part, the peripheral outline of the second part of the lock catch comprises a first arc-shaped surface, a connecting surface and a second arc-shaped surface which are sequentially arranged and connected, and the rotating center of the lock catch is adjacent to the inner edge of the middle part of the locking groove. When the lock catch is locked, the ejector rod pushes the lock catch to rotate anticlockwise, the first arc-shaped surface of the lock catch abuts against the plane part on the positioning piece, and along with rotation of the lock catch, the positioning piece moves forwards in the third direction and the first elastic piece is compressed; when the lock catch rotates to the joint of the connecting surface and the first inclined surface part and the plane part to be propped against, the lock catch is at the overturning point, after the overturning point is passed, the lock catch is rapidly overturned to a locking state along with the reverse movement of the ejector rod in the first direction, because the radius of the second arc surface is gradually reduced, the positioning piece can move in the reverse direction in the third direction under the action of the first elastic piece, the friction force between the first inclined surface part and the second arc surface is reduced, and the lock catch is rapidly overturned to the locking state.

Under the state that second arcwall face and first inclined plane portion offset, the locating part is exerted to the force of hasp and is decomposed into along the positive force of first direction and along the positive force of third direction, and the hasp when the self-locking state is rotatory towards the unblock state, need be in reverse first direction forward upset, because the power that the drive plate exerted on the hasp is opposite with the direction of rotation of hasp like this, the required force that overcomes when so unblock is great, and the locating part has produced moment of torsion f2 between the distance L2 of the pressure F2 of hasp and the rotation center of hasp, lead to the unblock power grow.

In order to improve the use safety of the door lock, a first micro switch and a first trigger piece are arranged in the shell, and the first micro switch is provided with a first contact; the first trigger piece comprises a first reed and a second contact, one end of the first reed is fixedly arranged relative to the shell, the second contact is arranged at a position, adjacent to the free end of the first reed, on the first reed, and the second contact always keeps a tendency of abutting against or separating from the first contact under the action of the first reed;

the shell is also movably provided with a first linkage piece connected with the positioning piece, and the first reed is positioned on the moving path of the first linkage piece, so that the first contact is contacted with or separated from the second contact when the lock catch is in a locking state. By arranging the micro switch, the equipment applying the door lock structure can be started only when the lock catch is in a locking state, and safety accidents caused by false starting of the equipment are avoided.

In order to enable the first linkage piece to be linked with the locating piece, a second inclined surface which extends along a third direction and inclines forwards or backwards in a second direction is arranged on the wall surface of the locating piece, the first linkage piece is in a rod shape, one end of the first linkage piece is provided with a sliding block which slides along the second inclined surface, the middle part of the first linkage piece is rotatably installed in the shell through a vertically extending installation shaft, and the first reed is located on the moving path of the other end of the first linkage piece. When the positioning piece moves forwards and backwards, the first linkage piece is driven to rotate, so that the other end of the first linkage piece pushes the first reed, and the first contact and the second contact are contacted or separated.

If the first linkage piece is long, if the distance between the second contact and the second inclined plane is far, the length design of the first linkage piece is required to be large, the size of the shell is also large, the first linkage piece is unfavorable for being installed on a household appliance which is smaller in submitting, the first linkage piece comprises a first extension arm and a second extension arm which are integrally connected, the connecting part of the first extension arm and the second extension arm is rotationally arranged in the shell through the installation shaft, the sliding block is arranged on the first extension arm, and the first reed is positioned on the moving path of the second extension arm. Thus, the first linkage piece is small in size, so that the whole door lock structure is small in size and is convenient to install on the household appliance.

If chopsticks or spoons extend into the lock hole of the shell to push the lock catch to turn over, the micro switch can still be triggered by mistake and send signals to the controller, so that a second micro switch and a second trigger piece are arranged in the shell, and the second micro switch is provided with a third contact; the second trigger piece comprises a second reed and a fourth contact, one end of the second reed is fixedly arranged relative to the shell, the fourth contact is arranged at a position, adjacent to the free end of the second reed, on the second reed, and the fourth contact always keeps a tendency of propping against or separating from the third contact under the action of the second reed;

the shell is also movably provided with a second linkage piece connected with the ejector rod, and the second reed is positioned on the moving path of the second linkage piece, so that the third contact is contacted with or separated from the fourth contact when the lock catch is in a locking state. Therefore, only when the top of the ejector rod is locked in the locking groove, the third contact and the fourth contact are separated or contacted, and the micro switch is triggered.

The second linkage member may have various structural forms, and preferably comprises

The first moving block can be arranged in the shell in a moving way along a first direction, at least part of the first moving block can be propped against the first end of the ejector rod, and a third inclined surface which is inclined along the first direction from the reverse direction to the direction away from the first moving block is arranged on the first moving block;

the second elastic piece acts on the first moving block to enable the first moving block to always keep the forward moving trend towards the first direction;

one end of the connecting rod is positioned on the third inclined plane and can slide along the third inclined plane;

the second moving block is positioned on the moving path of the other end of the connecting rod;

the second reed is located on the moving path of the second moving block.

The second linkage member of the embodiment has compact structure and small occupied space.

In order to enable the second reed to be located on the moving path of the second moving block, a groove is formed in the second moving block, and the free end of the second reed stretches into the groove.

The technical scheme adopted by the invention for solving the third technical problem is as follows: an electric appliance applying the door lock structure is characterized in that: the novel door comprises a box body and a door body, wherein the inner part of the box body is provided with a cavity with one side open, the door body can be movably arranged at the opening of the box body, so that the cavity is opened and closed, the ejector rod can be movably arranged on the side wall of the box body along the first direction, and the shell is arranged on the door body.

The household appliances can be steam boxes, ovens and the like, in the scheme, the household appliances are cleaning machines, the top of the box body is open, the first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction; or the household appliance is a cleaning machine, the front side of the box body is open, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction. When a user opens the door, the door body cannot be opened completely at one time easily because the force required to be applied is large, so that the large-area pavement of steam comes, the door opening process is stable, and the safety is good.

Compared with the prior art, the invention has the advantages that: 1. in the locking state of the lock catch, the second part of the lock catch is propped against the first inclined surface part on the positioning piece, so that the force applied to the lock catch by the positioning piece is decomposed into the force in the forward direction along the first direction and the force in the forward direction along the third direction, when the lock catch rotates in the unlocking state in the self-locking state, the lock catch needs to be turned over in the forward direction against the first direction, and the direction of the force applied to the lock catch by the positioning piece is opposite to the rotating direction of the lock catch, so that the force to be overcome by the lock catch is larger when the door is opened, the door body cannot be opened completely at one time easily, the door opening process is stable, and the safety is good; the door body is not easy to be opened by mistake because of large door opening force; 2. the hasp of this application under the unblock state, the second part of hasp offsets with the plane portion on the setting element, and the setting element is exerted the power on the hasp like this and is followed the third direction forward, can not produce too big resistance to the upset of hasp, and the power that the hasp needs to overcome when opening the door is greater than the power that the hasp needs to overcome when closing the door promptly, and the user can be easier to close the door, but needs certain power just to open the door, and the feel of use when opening and closing the door like this is good.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention (with a latch in a locked state);

FIG. 2 is an enlarged view at A of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of the door lock structure in FIG. 1;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 with the ejector pin and the first housing removed;

FIG. 7 is a schematic illustration of the structure of FIG. 6 with the second housing removed;

FIG. 8 is a schematic view of the structure of FIG. 7 in another direction;

FIG. 9 is a schematic view of the positioning member shown in FIG. 8;

FIG. 10 is a schematic view of the latch of FIG. 8;

FIG. 11 is a schematic view of the positioning member and the first linkage member of FIG. 8;

FIG. 12 is a schematic view showing the states of the first and second micro switches in FIG. 1;

FIG. 13 is a cross-sectional view of an embodiment of the present invention (latch in an unlocked state);

fig. 14 is a schematic view showing states of the first micro switch and the second micro switch in fig. 13;

fig. 15 is a cross-sectional view of an embodiment of the invention (latch past the flip point but not to the locked condition).

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 15, the household appliance of the preferred embodiment is a washer capable of washing vegetables, fruits or tableware, especially an embedded washer, and of course, the household appliance of the present application is not limited to a washer, and may be a steam box, an oven, or the like.

As shown in fig. 1 to 3, the household appliance comprises a box 1, a door 2 and a door lock structure a, wherein a cavity 11 with an open front side is formed in the box 1, the door 2 can be movably arranged at the open position of the box 1, for example, one end of the door 2 is rotatably connected with the side part of the box 1, and the other end of the door 2 is detachably connected with the box 1 through the door lock structure a, so that the door 2 can open and close the cavity 11; or the door body 2 can be arranged at the opening of the box body 1 in a drawing way.

As shown in fig. 1 to 5, the door lock structure a includes a housing 3, a push rod 4, a lock catch 5, a positioning member 6, a first micro switch 71, a first triggering member 72, a second micro switch 81, a second triggering member 82 and the like, wherein the housing 3 is disposed on the door body 2, the housing 3 is formed by joining a first housing 301 and a second housing 302, a lock hole 31 penetrating through the wall thickness is formed on a side wall of the second housing 302, and the side wall provided with the lock hole 31 is defined as a first side wall 30 of the housing 3.

The ejector rod 4 is movably arranged on the side wall of the box body 1 back and forth under the action of a driving mechanism (such as a motor), namely, the ejector rod 4 is movably arranged on the rear side of the shell 3 back and forth, the ejector rod 4 can pass through the lock hole 31 and is partially positioned in the shell 3, a locking notch 41 is formed in the position, adjacent to the first end, of the ejector rod 4, the end part, located beside the locking notch 41, of the ejector rod 4 is of a columnar structure 42, namely, the end part, located in front of the locking notch 41, of the ejector rod 4 is of a columnar structure 42.

The lock catch 5 is sequentially divided into a first portion 5a and a second portion 5b from top to bottom, in this embodiment, the first portion of the lock catch 5 is an upper portion of the lock catch 5, the upper portion of the lock catch 5 has a locking groove 51 with a C-shaped opening, the lock catch 5 is disposed in the housing 3 and located in front of the lock hole 31, and the lock catch 5 can rotate around an axis of the pin shaft 50 extending in a left-right direction, the lock catch 5 can rotate to a locking state (as shown in fig. 3) in which the locking groove 51 limits the columnar structure 42 of the ejector rod 4 therein to lock the ejector rod 4, and an unlocking state (as shown in fig. 13) in which the opening of the locking groove 51 faces backward to allow the columnar structure 42 of the ejector rod 4 to be separated from the locking groove 51.

The positioning element 6 is movably disposed in the housing 3 up and down, and the positioning element 6 always keeps a trend of moving upwards under the action of the first elastic element 60, so that the upper portion of the positioning element 6 can always collide with the lock catch 5 to limit the rotation of the lock catch 5. In this embodiment, the first elastic member 60 is a spring, one end of which abuts against the lower portion of the positioning member 6, and the other end abuts against a fixing block 601 fixedly provided in the housing 3.

The upper portion of the positioning member 6 includes a continuous flat portion 61 and a first inclined portion 62, the flat portion 61 extends in the front-rear direction, the first inclined portion 62 is inclined rearward from top to bottom, the outer peripheral contour of the rear portion of the lock catch 5 includes a first arc surface 52, a connecting surface 53 and a second arc surface 54 which are sequentially provided and connected, and the rotation center (axis of the pin 50) of the lock catch 5 is provided adjacent to the inner edge of the middle portion of the lock groove 51. In the locked state of the lock catch 5, the second arc-shaped surface 54 of the lock catch 5 abuts against the first inclined surface portion 62 of the positioning piece 6 (as shown in fig. 3); in the unlocked state of the lock catch 5, the first arcuate surface 52 of the lock catch 5 abuts against the planar portion 61 of the positioning member 6 (as shown in fig. 13).

When the lock catch 5 is locked, the ejector rod 4 pushes the lock catch 5 to rotate anticlockwise, the first arc-shaped surface 52 of the lock catch 5 abuts against the plane part 61 on the positioning piece 6 in the initial state, and the positioning piece 6 moves downwards and the first elastic piece 60 is compressed along with the rotation of the lock catch 5; when the lock catch 5 rotates to the joint of the connecting surface 53 and the first inclined surface 62 and the plane surface 61, the lock catch 5 is at the turning point at this time, and after the turning point is passed (as shown in fig. 15), the lock catch 5 is turned rapidly to the locked state (as shown in fig. 3) as the ejector rod 4 moves forward continuously, because the radius of the second curved surface 54 gradually decreases, the positioning member 6 moves up under the action of the first elastic member 60.

In the state where the second arcuate surface 54 and the first inclined surface 62 are abutted, the force F1 applied to the lock catch 5 by the positioning member 6 can be decomposed into a rearward force and an upward force (the decomposition of the force is shown in fig. 3), and the lock catch 5 needs to be turned forward (clockwise) when unlocked, so that the force to be overcome when unlocked is large because the rearward force applied to the lock catch 5 by the positioning member 6 is opposite to the rotation direction of the lock catch 5, and a torque F1 x L1 is generated between the force F1 of the positioning member 6 to the lock catch 5 and the distance L1 (not shown in the figure) of the rotation center of the lock catch 5, resulting in an increase in unlocking force.

As shown in fig. 6 to 8, 11 and 14, a first micro switch 71 and a first trigger member 72 are provided in the housing 3, the first micro switch 71 has a first contact 711, the first trigger member 72 includes a first reed 721 and a second contact 722, one end of the first reed 721 is fixedly mounted in the housing 3 by a mounting plate 723, the second contact 722 is provided on the first reed 721 at a position adjacent to the free end thereof, and the second contact 722 always maintains a tendency to be separated from the first contact 711 under the action of the first reed 721.

The housing 3 is also movably provided with a first link 73 connected to the positioning member 6, and a first reed 721 is positioned on the moving path of the first link 73, so that the first contact 711 is brought into contact with the second contact 722 in the locked state of the lock catch 5.

The side wall of the positioning piece 6 is provided with a containing groove 601, the local wall surface of the containing groove 601 extends up and down and inclines forwards or backwards to form a second inclined surface 63, the first linkage piece 73 is in a rod shape, the first linkage piece 73 comprises a first extension arm 731 and a second extension arm 732 which are integrally connected, the joint of the first extension arm 731 and the second extension arm 732 is rotationally arranged in the shell 3 through a mounting shaft 733, the tail end of the first extension arm 731 is provided with a sliding block 7311 which can slide along the second inclined surface 63, and the first reed 721 is positioned on the moving path of the second extension arm 732. When the positioning member 6 moves up and down, the second inclined surface 63 drives the first linkage member 73 to rotate, so that the second extension arm 732 pushes the first reed 721 to make the first contact 711 and the second contact 722 abut.

The cleaning machine of this embodiment is further provided with a signal receiver, and the signal receiver is in signal connection with the first micro switch 71. When the door body 2 is locked (i.e. the lock catch 5 is in a locked state), the first micro switch 71 is triggered, the signal receiver sends out a working signal when receiving an on signal of the first micro switch 71, a cleaning program of the cleaning machine is allowed to be started, when the door body 2 is unlocked (i.e. the lock catch 5 is in an unlocked state), the first micro switch 71 is not triggered, the signal receiver sends out a power-off signal when receiving an off signal of the first micro switch 71, and the cleaning program of the cleaning machine is not allowed to be started. In other words, by providing the first micro switch 71, the device applying the door lock structure can be started only when the lock catch 5 is in the locked state, and the safety accident caused by the false start of the device is avoided.

Of course, the second contact 722 may be kept in a tendency to be pushed against the first contact 711 by the first reed 721, and the first contact 711 may be separated from the second contact 722 when the lock catch 5 is in the locked state.

If chopsticks or spoons extend into the lock hole 31 of the shell 3 to push the lock catch 5 to turn over, the first micro switch 71 may still be triggered by mistake and send a signal to the controller, so the shell 3 is provided with a second micro switch 81 and a second trigger piece 82, and the second micro switch 81 is provided with a third contact 811; the second trigger 82 includes a second spring 821 and a fourth contact 822, where one end of the second spring 821 is fixed relative to the housing 3, and the position of the second spring 821 adjacent to the free end thereof is provided with the fourth contact 822, and the fourth contact 822 always keeps a tendency to be offset with the third contact 811 under the action of the second spring 821.

The housing 3 is also movably provided with a second link 83 connected to the jack 4, and a second spring 821 is located on the moving path of the second link 83, so that the third contact 811 is separated from the fourth contact 822 in a locked state of the lock catch 5. So that the second microswitch 81 is triggered only if the third contact 811 and the fourth contact 822 are disengaged or brought into contact when the cylindrical structure 42 of the plunger 4 is locked in the locking slot 51.

In the present embodiment, the second linkage member 83 includes a first moving block 831, a second elastic member 832, a connecting rod 833, and a second moving block 834.

The first moving block 831 is movably disposed in the housing 3, the first moving block 831 is at least partially located in front of the ejector rod 4, the first moving block 831 is provided with a third inclined surface 8311 inclined from front to back in a direction away from the first moving block 831, and the second elastic member 832 acts on the first moving block 831 to keep the first moving block 831 moving backward.

One end of the connecting rod 833 is located on the third inclined surface 8311 and can slide along the third inclined surface 8311, the stop block 8340 on the second moving block 834 is located on the moving path of the other end of the connecting rod 833, the second moving block 834 is provided with a groove 8341, and the free end of the second reed 821 extends into the groove 8341, so that the second reed 821 is located on the moving path of the second moving block 834.

When the ejector rod 4 moves forward, the first moving block 831 moves forward, because the action of the third inclined surface 8311 forces the connecting rod 833 to move away from the first moving block 831, and the connecting rod 833 pushes the second moving block 834 to move during the movement, so as to drive the free end of the second reed 821 to move, so that the third contact 811 contacts the fourth contact 822. Of course, the fourth contact 822 may be kept in contact with the third contact 811 by the second spring 821, and the third contact 811 may be separated from the fourth contact 822 when the lock catch 5 is in the locked state.

Thus, only when the first and second micro-switches 81 are triggered and send a signal to the controller, the cleaning program of the cleaning machine is allowed to be started, and the reliability is high.

The moving direction of the ejector rod 4 is defined as a first direction, the moving direction of the ejector rod 4 towards the direction far from the lock hole 31 is defined as a positive direction of the first direction, the direction of the axis of the rotating shaft of the lock catch 5 is defined as a second direction, and the moving direction of the positioning piece 6 is defined as a third direction, and in this embodiment, the cleaning machine with an open front part is taken as an example, so the first direction is a front-rear direction, the second direction is a left-right direction, and the third direction is an up-down direction; of course, the door lock structure of the present embodiment is also applicable to a cleaning machine with an open top, in which case the first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present invention may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity.

Claims (10)

1. A door lock structure for a home appliance includes

A housing (3) with a first side wall (30) provided with a lock hole (31) penetrating through the wall thickness;

the ejector rod (4) is arranged on one side of the first side wall (30) of the shell (3), the ejector rod (4) can move towards a direction close to the lock hole (31) or far away from the lock hole (31), the ejector rod (4) extends along the moving direction of the ejector rod, the first end of the ejector rod (4) can penetrate through the lock hole (31) to enable the ejector rod (4) to be located in the shell (3) partially, a locking opening (41) is formed in the position, close to the first end, of the ejector rod (4), at the end, of the first end, located beside the locking opening (41) is of a columnar structure (42), the moving direction of the ejector rod (4) is defined as a first direction, and the moving direction of the ejector rod (4) towards the direction far away from the lock hole (31) is defined as a forward direction of the first direction;

the lock catch (5) is rotationally arranged in the shell (3) around an axis extending along the second direction, the lock catch (5) is sequentially divided into a first part (5 a) and a second part (5 b) along the forward direction of the third direction, the first direction, the second direction and the third direction are mutually perpendicular to each other, the first part (5 a) is close to the lock hole (31), a locking groove (51) with a C-shaped opening is formed in the first part (5 a), the lock catch (5) can rotate to a locking state in which the locking groove (51) limits the columnar structure (42) of the ejector rod (4) to lock the ejector rod (4), and an unlocking state in which the opening of the locking groove (51) faces the lock hole (31) to allow the columnar structure (42) of the ejector rod (4) to be separated from the locking groove (51);

characterized in that it also comprises

The locating piece (6) can be arranged in the shell (3) in a moving way along a third direction, the locating piece (6) can be in contact with the second part (5 b) of the lock catch (5) all the time to limit the rotation of the lock catch (5), the wall surface of the locating piece (6) in contact with the lock catch (5) comprises a first inclined surface part (62), the first inclined surface part (62) is inclined in the forward direction of the first direction towards the direction away from the lock catch (5), and in the locked state of the lock catch (5), the second part (5 b) of the lock catch (5) is in contact with the first inclined surface part (62) of the locating piece (6);

a first micro switch (71) and a first trigger piece (72) are arranged in the shell (3), and the first micro switch (71) is provided with a first contact (711); the first trigger piece (72) comprises a first reed (721) and a second contact (722), one end of the first reed (721) is fixedly arranged relative to the shell (3), the second contact (722) is arranged on the first reed (721) at a position adjacent to the free end of the first reed, and the second contact (722) always keeps a tendency of abutting or separating from the first contact (711) under the action of the first reed (721);

a first linkage piece (73) connected with the positioning piece (6) is movably arranged in the shell (3), and a first reed (721) is positioned on the moving path of the first linkage piece (73), so that the first contact (711) is contacted with or separated from the second contact (722) when the lock catch (5) is in a locking state;

the wall surface of the locating piece (6) is provided with a second inclined surface (63) which extends along a third direction and inclines forwards or backwards in a second direction, the first linkage piece (73) is rod-shaped, one end of the first linkage piece (73) is provided with a sliding block (7311) which slides along the second inclined surface (63), the middle part of the first linkage piece (73) is rotatably installed in the shell (3) through an installation shaft, and the first reed (721) is located on the moving path of the other end of the first linkage piece (73).

2. The door lock structure according to claim 1, wherein: the wall surface of the locating piece (6) which is in contact with the lock catch (5) comprises a plane portion (61) and a first inclined surface portion (62), the plane portion (61) extends along a first direction, and when the lock catch (5) is in an unlocking state, a second portion (5 b) of the lock catch (5) is in contact with the plane portion (61) of the locating piece (6).

3. The door lock structure according to claim 2, wherein: the elastic device also comprises a first elastic piece (60) which acts on the positioning piece (6) to ensure that the positioning piece (6) always keeps the contact trend with the lock catch (5).

4. A door lock structure according to claim 3, wherein: the periphery outline of the second part (5 b) of the lock catch (5) comprises a first arc-shaped surface (52), a connecting surface (53) and a second arc-shaped surface (54) which are sequentially arranged and connected, and the rotation center of the lock catch (5) is adjacent to the inner edge of the middle part of the locking groove (51).

5. The door lock structure according to claim 1, wherein: the first linkage piece (73) comprises a first extension arm (731) and a second extension arm (732) which are integrally connected, the connecting part of the first extension arm (731) and the second extension arm (732) is rotationally arranged in the shell (3) through the mounting shaft, the sliding block (7311) is arranged on the first extension arm (731), and the first reed (721) is positioned on the moving path of the second extension arm (732).

6. The door lock structure according to claim 1, wherein: a second micro switch (81) and a second trigger piece (82) are arranged in the shell (3), and the second micro switch (81) is provided with a third contact (811); the second trigger piece (82) comprises a second reed (821) and a fourth contact (822), one end of the second reed (821) is fixedly arranged relative to the shell (3), the fourth contact (822) is arranged on the second reed (821) at a position adjacent to the free end of the second reed, and the fourth contact (822) always keeps a tendency of abutting or separating from the third contact (811) under the action of the second reed (821);

the second linkage piece (83) connected with the ejector rod (4) is movably arranged in the shell (3), and the second reed (821) is positioned on the moving path of the second linkage piece (83), so that the third contact (811) is contacted with or separated from the fourth contact (822) when the lock catch (5) is in a locking state.

7. The door lock structure according to claim 6, wherein: the second linkage (83) comprises

The first moving block (831) is movably arranged in the shell (3) along a first direction, the first moving block (831) can at least partially prop against the first end of the ejector rod (4), and a third inclined surface (8311) which is inclined along the first direction from the reverse direction to the forward direction and is far away from the first moving block (831) is arranged on the first moving block (831);

a second elastic member (832) acting on the first moving block (831) to keep the first moving block (831) always in a forward moving direction;

a connecting rod (833) with one end positioned on the third inclined surface (8311) and capable of sliding along the third inclined surface (8311);

a second moving block 834 located on the moving path of the other end of the connecting rod 833;

the second reed (821) is located on the moving path of the second moving block (834).

8. The door lock structure according to claim 7, wherein: the second moving block (834) is provided with a groove (8341), and the free end of the second reed (821) extends into the groove (8341).

9. A household appliance applying the door lock structure as claimed in any one of claims 1 to 8, characterized in that: the novel multifunctional portable multifunctional refrigerator further comprises a refrigerator body (1) and a door body (2), wherein a cavity (11) with one side open is formed in the refrigerator body (1), the door body (2) can be movably arranged at the opening of the refrigerator body (1), the cavity (11) is opened and closed, the ejector rod (4) can be movably arranged on the side wall of the refrigerator body (1) along the first direction, and the shell (3) is arranged on the door body (2).

10. The household appliance according to claim 9, wherein: the household appliance is a cleaning machine, the top of the box body (1) is open, the first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction; or the household appliance is a cleaning machine, the front side of the box body (1) is open, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction.