CN113463984B - Door lock structure for electric appliance and cleaning machine with door lock structure - Google Patents

Abstract

The invention relates to a door lock structure for an electric appliance and a cleaning machine applying the door lock structure. The electric control lock has low requirement on electric control logic, when the lock is required to be locked, the lock rod moves downwards to abut against the lock catch so as to drive the lock catch to rotate, the upper end of the lock catch is gradually matched with a lock opening at the lower end of the lock rod to be limited, the driving mechanism drives the operating part to move upwards, and then the limiting part is driven to move leftwards so as to limit the position of the lock catch, so that the lock catch is prevented from being turned upwards, and locking is realized; when the lock needs to be unlocked, the driving mechanism drives the operating piece to move downwards, the limiting piece moves rightwards along with the operating piece, the limiting of the lock catch position is cancelled, at the moment, the door body is lifted upwards, and the lock rod can move upwards under the driving of the door body, so that the unlocking is realized; the whole process is simple and reliable and is convenient to realize.

Description

Door lock structure for electric appliance and cleaning machine applying same

Technical Field

The invention relates to a door lock structure for an electric appliance and a cleaning machine applying the door lock structure.

Background

For the box body with the functional inner cavity, due to functional requirements, a door body capable of opening or covering the port is usually arranged at the port of the box body, and the door body needs to be locked relative to the box body in the using process of the box body.

For example, the chinese patent application CN200410043122.5, entitled "door opening and closing mechanism and dish washer with the same (application publication No. CN1550202A), discloses a structure comprising: a door rotatably disposed to open and close a dish inlet provided in the dish washing machine, and a rotation assisting mechanism for applying a rotation assisting force to the door in accordance 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 predetermined angle range from a closed state. Although the door body can be locked on the tableware washing machine, the locking structure is complex, the dependence on electric parts and control modes is high, the action logic of the door lock is complex, faults are easy to occur, and the reliability is low.

Therefore, further improvements are needed for the current door lock structure.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a door lock structure for an electric appliance, which has low requirement on electric control logic and high reliability, aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide a cleaning machine with the above door lock structure, aiming at the current situation of the prior art, the cleaning machine is convenient for opening and closing the door and can improve the safety and reliability of the cleaning process.

The technical scheme adopted by the invention for solving the technical problems is as follows: a door lock structure for an electric appliance, characterized in that: comprises that

The shell is used for being connected with the electric appliance main body, and the top wall of the shell is provided with a vertically through socket;

the upper end of the lock rod is used for being connected with the electric appliance door body, the lower end of the lock rod is provided with a mouth-shaped locking opening, the lock rod can penetrate through the inserting opening in the shell in a vertically moving mode, can penetrate through the inserting opening in the shell in a door locking state and is positioned in the shell, and can penetrate through the inserting opening in an unlocking state and is positioned on the shell;

the lock catch is positioned in the shell and is of a C-shaped structure, and the opening direction of the lock catch is opposite to the locking port direction of the lock rod; the middle part of the lock catch can be rotatably arranged on the shell and positioned beside the lock opening; the opening of the lock catch is obliquely arranged upwards corresponding to the lower end of the lock rod in an unlocking state, and in a door locking state, under the action of downward propping and pressing of the lock rod, the opening end of the lock catch gradually deflects towards the lock rod along with downward movement of the lock rod until entering the lock opening of the lock rod and being mutually buckled;

the stop piece is arranged in the shell in a left-right moving mode, the left end of the stop piece is abutted against the side part of the lock catch, and the stop piece moves rightwards under the abutting action of the side part of the lock catch in the process that the opening end of the lock catch is turned downwards;

the first elastic piece is arranged in the shell and enables the stopping piece to always keep a trend of moving leftwards, and the stopping piece moves leftwards under the action of the first elastic piece in the process that the opening end of the lock catch is turned upwards;

the operating part is arranged in the shell in a vertically movable mode and is positioned on the right side of the stop part, the right end of the stop part is provided with a limit block, and correspondingly, the left side of the operating part is provided with a limit notch for the limit block to be inserted into so as to limit the limit block;

the limiting piece is arranged at the upper part of the shell in a left-right moving mode, the left end of the limiting piece abuts against the upper side of the lock catch and is prevented from turning upwards when the limiting piece moves leftwards, the limiting piece moves rightwards to enable the left end of the limiting piece to be separated from the upper side of the lock catch so as to cancel the limitation on the lock catch, and the limiting piece is connected with the operating piece, moves leftwards under the driving action of the upward movement of the operating piece and moves rightwards under the driving action of the downward movement of the operating piece; and

and the driving mechanism is arranged on the shell and used for driving the operating piece to move up and down.

In the above scheme, the housing is provided with a third elastic member which can enable the operating member to always keep the upward movement trend. Under the locking state, the structure can ensure that the limiting piece always locks the lock catch, thereby improving the safety and reliability of the door lock under the locking state.

Preferably, the shell is provided with a limiting structure capable of limiting the operating part at the end of the moving stroke of the operating part, the limiting structure comprises a positioning needle and a positioning groove formed in the side wall of the operating part, the positioning needle is arranged on the side wall of the operating part, and one end of the positioning needle can be slidably inserted into the positioning groove. The structure can further improve the safety and the reliability of the door lock in the locking and unlocking states: in the unlocking state, the operating piece moves downwards to the lower end of the moving stroke of the operating piece, at the moment, the positioning needle is matched with the upper end of the positioning groove to restrain the operating piece at the position, the limiting piece is restrained at a position closer to the right in the shell, and the unlocking state of the door lock structure is maintained; under the lock door state, the operating part moves up to the upper end of its travel, and at this moment, the locating pin cooperates with the constant head tank lower extreme and retrains the operating part here, retrains the position that the restriction piece is comparatively left in the casing, maintains the locking state of lock structure promptly.

Preferably, the driving mechanism is an electromagnetic assembly, the electromagnetic assembly is arranged below the operating element and at least comprises a coil and an iron core capable of retracting under the energized state of the coil, the iron core is arranged in the coil in a vertically movable manner, the third elastic element is arranged on the lower side of the iron core, and the upper end of the iron core is connected with the operating element and can provide tension for the operating element to overcome the third elastic element under the energized state of the coil. For the door lock structure, the electromagnetic assembly is intermittently and instantly electrified, so that the operating element can be driven to move up and down to drive the limiting element to move, whether the lock catch is limited or not can be realized, the positioning needle can be triggered to be matched with the positioning groove at two ends of the moving stroke of the operating element, the sliding direction of the positioning needle in the positioning groove can be switched, and whether the limiting element moves or not can be triggered before locking and unlocking.

Preferably, at least part of the positioning needle is arranged vertically to the positioning groove, the positioning groove is at least provided with a slideway only allowing the positioning needle to slide in the positioning groove in a single direction, a first limit point capable of being matched and limited with the positioning needle in an unlocked state is formed at the upper end of the slideway, and a second limit point capable of being matched and limited with the positioning needle in a locked state is formed at the lower end of the slideway. A one-way slideway is arranged in the positioning groove, so that the positioning needle can be conveniently switched between a first limiting point and a second limiting point, and the switching between unlocking and locking states is realized.

Preferably, the first limit point and the second limit point are arranged at intervals, a limit bump is arranged between the first limit point and the second limit point, the positioning groove is provided with a first slideway which bypasses the first side of the limit block and communicates the first limit point with the second limit point, and a second slideway which bypasses the second side of the limit block and communicates the first limit point with the second limit point, and the first slideway, the first limit point, the second slideway and the second limit point are connected end to jointly enclose the slideway. The structure is convenient to be matched with the positioning needle to realize the one-way sliding of the positioning needle.

Preferably, along the sliding direction of the positioning needle in the slideway, the slopes of the first slideway and the second slideway are gradually increased, and steps which can enable the slopes of the corresponding slideways to be steeply reduced are arranged at positions close to the first limit point and the second limit point. The slope setting of first slide, second slide is convenient for realize its one-way slip with the pilot pin cooperation, and the step arrangement has not only guaranteed that the pilot pin can only one-way slip, can carry out interim restraint to the position of pilot pin at first spacing point, second spacing point moreover.

Preferably, a first step which is steeply reduced is formed near the end of the first slideway, a second step which is steeply reduced is formed at the joint of the end of the first slideway and the first limit point, a third step which is steeply reduced is formed at the joint of the first limit point and the starting end of the second slideway, and a fourth step which is steeply reduced is formed at the joint of the end of the second slideway and the second limit point. The structure further ensures the unidirectional sliding track of the positioning needle and the restraining force on the positioning needle at the first limit point and the second limit point.

Preferably, the upper end surface of the limiting block is recessed downwards to form a limiting surface which can be abutted against the positioning pin so as to limit the limiting part in the unlocked state. The structure is matched with the steps to realize the restraint effect of the first limit point on the positioning needle.

Preferably, the slide extends downwards from the second limit point to form a limit groove for clamping the positioning needle, and a limit table capable of abutting against the positioning needle is arranged on the outer side of the limit groove. The structure can improve the restraint force to the positioning pin in the locking state.

Preferably, the tail end of the first slide way and the starting end of the second slide way respectively extend upwards to form a Y-shaped structure together with the slide way and the limiting groove. The tail end of the first slide way and the part extending upwards from the starting end of the second slide way are horizontally arranged. The structure can provide a certain yielding space for the positioning needle when the track is converted, so that the motion track of the positioning needle is matched with the transverse front-back moving process of the operating part more stably and smoothly.

In order to facilitate installation and assembly, the first end of the positioning needle extends left and right and extends into the slideway to be matched with the slideway in a guiding manner, and the second end of the positioning needle is restrained on the shell through a fourth elastic piece.

Preferably, the fourth elastic member is a U-shaped elastic piece, the U-shaped elastic piece is transversely arranged in the housing, the first side of the U-shaped elastic piece is constrained in the housing, and the second side of the U-shaped elastic piece abuts against the main body part of the positioning needle, so that the first end of the positioning needle always elastically abuts against the positioning groove.

Preferably, the limiting member is located at the rear side of the operating member, a guide post extending backwards is arranged on the rear side wall of the operating member, and correspondingly, a guide groove which can be in sliding fit with the guide post so that the limiting member moves left and right along with the up-and-down movement of the operating member is formed on the front side wall of the limiting member. The guide groove comprises a first part which is positioned at the lower part and extends vertically and a second part which extends from the upper end of the first part to the right in an inclined way.

In the invention, the driving mechanism comprises a pull rod and a fifth elastic piece, the pull rod can be arranged in the shell in a vertically moving mode, the lower end of the pull rod is exposed out of the shell, and the fifth elastic piece is arranged in the shell and enables the pull rod to always keep the trend of moving upwards; the right side wall of the operating part is provided with a first convex block, correspondingly, the left side wall of the pull rod is provided with a second convex block which can be clamped with the first convex block after moving downwards so as to drive the operating part to move downwards. This structure can directly replace the use of electromagnetic component and also can be standby structure, when having a power failure suddenly, adopts this manual structure, guarantees that the lock also can realize the unblock and lock under the outage state.

Preferably, the door lock structure further comprises a second elastic piece, a torsion spring is adopted, the second elastic piece comprises a middle spiral body and extension arms at two ends, the middle spiral body is freely suspended and located on one side departing from the C-shaped opening direction of the lock catch, the tail end of the first arm is connected with the outer edge of the middle part of the lock catch, and the tail end of the second arm is restrained on the shell.

Preferably, a microswitch electrically connected with a master controller of the electric appliance is arranged in the shell, a third bump is arranged on the lower portion of the left side wall of the operating element, and a trigger piece of the microswitch is arranged close to the left side wall of the operating element, can be pressed and triggered by the third bump after moving upwards of the operating element, and is far away from the third bump to release triggering after moving downwards of the operating element. By adopting the structure, only when the door body is in a locked state, the trigger sheet can be pressed, namely the microswitch is closed, and the cleaning work is allowed to be started; when the door body is opened, the trigger piece is positioned on the upper side of the third bump, namely the microswitch is not closed, and the cleaning work is not allowed to be started; the structure improves the safety of the whole door lock structure and the cleaning machine.

Preferably, an elastic soft film capable of covering the insertion opening is arranged on the top wall of the shell, and a gap capable of allowing the lower end of the lock rod to extrude and penetrate through is formed in the elastic soft film. The structure can improve the waterproof performance of the door lock structure in an unlocked state.

The utility model provides an use cleaning machine that has above-mentioned lock structure for electric appliance, includes the box and the door body, the box has the washing chamber and communicates in the last port at this washing chamber top, the edge of the door body rotates the edge of connecting the port on the box, the casing is located on the box and the fore shaft is arranged up, the locking lever is located on the door body and is corresponded the fore shaft and arrange.

Preferably, the edge of the upper port of the box body is formed with a horizontal and outward extending tray table, and the tray table is provided with an opening corresponding to the locking port.

Compared with the prior art, the invention has the advantages that: the locking device has low requirement on electric control logic, when the locking device needs to be locked, the lock rod moves downwards to abut against the lock catch so as to drive the lock catch to rotate, the upper end of the lock catch is gradually matched with a locking notch at the lower end of the lock rod to limit, the driving mechanism drives the operating part to move upwards, and then the limiting part is driven to move leftwards so as to limit the position of the lock catch, so that the lock catch is prevented from turning upwards, and locking is realized; when the lock needs to be unlocked, the driving mechanism drives the operating piece to move downwards, the limiting piece moves rightwards along with the operating piece, the limiting of the lock catch position is cancelled, at the moment, the door body is lifted upwards, and the lock rod can move upwards under the driving of the door body, so that the unlocking is realized; the whole process is simple and reliable and is convenient to realize.

Drawings

Fig. 1 is a schematic view (locked state) of a door lock structure of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the hidden housing and a part of the structure shown in FIG. 1;

fig. 4 is a sectional view (unlocked state) of the door lock structure of the embodiment of the present invention;

fig. 5 is a partial structural schematic view (unlocked state) of the door lock structure of the embodiment of the present invention;

FIG. 6 is a schematic structural view of a restricting member according to an embodiment of the present invention;

FIG. 7 is a schematic view of the engagement structure of the positioning pin and the operating member according to the embodiment of the present invention;

FIG. 8 is a schematic view of a positioning groove according to an embodiment of the present invention;

FIG. 9 is a schematic view of another angle positioning groove in an embodiment of the present invention;

FIG. 10 is a schematic view of the engagement between the positioning pin and the positioning groove in the unlocked state according to the embodiment of the present invention;

FIG. 11 is a schematic view of the engagement between the positioning pin and the positioning slot in the locked state according to the embodiment of the present invention;

FIG. 12 is a schematic view of a latch according to an embodiment of the present invention;

fig. 13 is a schematic view of a part of the structure of the cleaning machine in the embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 13, the door lock structure of the present embodiment is used for locking any door body and any box body, and the present embodiment is described by taking a water tank type cleaning machine as an example. As shown in fig. 13, the cleaning machine of the present embodiment includes a box 8 and a door 9, the box 8 has a washing chamber and an upper port 81 communicating with the top of the washing chamber, and an edge of the door 9 is rotatably connected to an edge of the upper port 81 of the box 8.

The door lock structure for the electric appliance comprises a shell 1, a lock rod 2, a lock catch 4, a second elastic member 20, a stop member 3, a first elastic member 10, an operating member 6, a limiting member 5 and a driving mechanism. The locking rod 2 is vertically installed on the lower wall surface of the door body 9 and is close to the edge, and the locking rod 2, the lock catch 4, the stop piece 3, the first elastic piece 10, the operating piece 6, the limiting piece 5, the driving mechanism and the like are all installed on the side wall of the box body 8 and are close to the upper edge of the box body 8. The top wall of the shell 1 is provided with a vertically through socket 11; the lock rod 2 has a mouth-shaped locking opening 21 at the lower end, the locking opening 21 can penetrate through the inserting opening 11 on the shell 1 in a vertically movable manner, and can penetrate through the inserting opening 11 on the shell 1 to be positioned in the shell 1 in a door locking state, and can penetrate through the inserting opening 11 to be positioned on the shell 1 in an unlocking state. The edge of the port 81 on the box 8 is formed with a horizontal and outward extending saddle 811, and the saddle 811 is opened with an opening 812 arranged corresponding to the socket 11. The top wall of the shell 1 is provided with an elastic soft film 110 which can cover the socket 11, the elastic soft film 110 is provided with a gap 1101 through which the lower end of the lock rod 2 can extrude, and the elastic soft film 110 can prevent water stain from invading into the door lock structure in a large amount under the door opening state.

The lock catch 4 is positioned in the shell 1, is of a C-shaped structure, and has an opening direction opposite to the direction of the lock opening 21 of the lock rod; the middle part of the lock catch 4 can be rotatably arranged on the shell 1 and is positioned at the side of the lock opening. The two sides of the middle part of the lock catch 4 are respectively provided with a rotating shaft 41 extending leftwards and rightwards, and the rotating shafts 41 are rotatably connected in the shell 1. The opening of the lock catch 4 is arranged obliquely upwards corresponding to the lower end of the lock rod in the unlocking state, and in the door locking state, under the action of downward pressing of the lock rod 2, the opening end 400 of the lock catch 4 gradually deflects towards the lock rod 2 along with the downward movement of the lock rod 2 until entering the lock opening 21 of the lock rod and being mutually buckled.

The second elastic member 20 is a torsion spring, and includes a middle spiral body 201 and extension arms at two ends, wherein the middle spiral body 201 is freely suspended and located at one side departing from the C-shaped opening direction of the latch 4, the end of the first arm 202 is connected with the outer edge of the middle part of the latch 4, and the end of the second arm 203 is constrained on the housing 1. The second elastic member 20 can provide a force for the lock catch 4 to deflect around the rotating shaft 41, and the second elastic member cooperates with the lock rod 2 to move up and down, so as to lock and open the door.

The stop piece 3 is arranged in the shell 1 in a left-right moving mode, the left end of the stop piece is abutted against the side part of the lock catch 4, and the side wall 410 of the lock catch 4 close to the stop piece 3 is gradually inclined towards the direction of the stop piece 3 from top to bottom so as to be matched with the stop piece 3 to drive the stop piece 3 to move rightwards. During the process of turning the opening end of the lock catch 4 downwards, the stop piece 3 moves rightwards under the action of the side part of the lock catch 4. The first elastic member 10 is disposed in the housing 1 and keeps the stopper 3 always moving to the left, and during the process of turning the open end 400 of the latch 4 upward, the stopper 3 moves to the left by the first elastic member 10. The operating part 6 can be arranged in the shell 1 in a vertically moving mode and is positioned on the right side of the stop part 3, the right end of the stop part 3 is provided with a limit block 31, and correspondingly, the left side of the operating part 6 is provided with a limit notch 61 for inserting the limit block 31 to limit the limit.

The limiting piece 5 is arranged at the upper part of the shell 1 in a left-right moving mode, the left end of the limiting piece 5 abuts against the upper side of the lock catch 4 in a left moving state and is prevented from turning upwards, and the limiting piece 5 moves rightwards to enable the left end to be separated from the upper side of the lock catch 4 so as to cancel the limitation on the lock catch 4. The restricting member 5 is connected to the operating member 6 and moves leftward by the driving action of the operating member 6 moving upward and rightward by the driving action of the operating member 6 moving downward. The limiting piece 5 is positioned at the rear side of the operating piece 6, a guide post 60 extending backwards is arranged on the rear side wall of the operating piece 6, and correspondingly, a guide groove 51 which can be in sliding fit with the guide post 60 so that the limiting piece 5 moves left and right along with the vertical movement of the operating piece 6 is formed on the front side wall of the limiting piece 5. The guide groove 51 includes a first portion 511 located at a lower portion and extending vertically and a second portion 512 extending obliquely rightward from an upper end of the first portion 511.

The driving mechanism of the present embodiment is provided on the housing 1 and drives the operating element 6 to move up and down. The housing 1 is provided with a third elastic element 30 which keeps the operating element 6 always moving upwards. The driving mechanism is an electromagnetic assembly 63, the electromagnetic assembly 63 is disposed below the operating element 6 and at least includes a coil 631 and an iron core 632 that can retract when the coil 631 is energized, the iron core 632 is disposed in the coil 631 so as to move up and down, the third elastic element 30 is disposed at the lower side of the iron core 632, the upper end of the iron core 632 is connected to the operating element 6 and can provide a pulling force for the operating element 6 to overcome the third elastic element 30 when the coil 631 is energized. The driving mechanism of the present embodiment may further include a pull rod 65 and a fifth elastic element 50, wherein the pull rod 65 is disposed in the housing 1 in a vertically movable manner, and the lower end of the pull rod is exposed outside the housing 1, and the fifth elastic element 50 is disposed in the housing 1 and keeps the pull rod 65 always moving upward; the right side wall of the operating element 6 is provided with a first projection 66, and correspondingly, the left side wall of the pull rod 65 is provided with a second projection 651 which can be clamped with the first projection 66 after moving downwards so as to drive the operating element to move downwards. This structure can directly replace electromagnetic component 63 to use and also can be standby structure, when having a power failure suddenly, adopts this manual structure, guarantees that the lock also can realize the unblock and lock under the power failure state.

In the present embodiment, the housing 1 is provided with a limiting structure capable of limiting the operation element 6 at the end of the moving stroke thereof, the limiting structure comprises a positioning needle 64 and a positioning groove 62 opened on the side wall of the operation element 6, the positioning needle 64 is arranged on the side wall of the operation element 6 and one end thereof is slidably inserted in the positioning groove 62.

Specifically, a part of the positioning pin 64 is arranged perpendicular to the positioning groove 62, the positioning groove 62 has a slide 620 allowing only the positioning pin 64 to slide in one direction in the positioning groove 62, the upper end of the slide 620 is formed with a first limit point 621 capable of cooperating with the positioning pin 64 in the unlocked state for limiting, and the lower end of the slide 620 is formed with a second limit point 622 capable of cooperating with the positioning pin 64 in the locked state for limiting. A one-way slide 620 is provided in the positioning slot 62 to facilitate the switching of the positioning needle 64 between the first limit point 621 and the second limit point 622, thereby achieving the switching of the unlocking state and the locking state. The first limiting point 621 and the second limiting point 622 are arranged at an interval from top to bottom, a limiting convex block 623 is arranged between the first limiting point 621 and the second limiting point 622, the limiting convex block 623 is shaped like a peach-heart, the tip of the limiting convex block 623 faces downwards, the positioning groove 62 is provided with a first slide way 624 which bypasses the first side of the limiting convex block 623 and communicates the first limiting point 621 with the second limiting point 622 and a second slide way 625 which bypasses the second side of the limiting convex block 623 and communicates the first limiting point 621 with the second limiting point 622, and the first slide way 624, the first limiting point 621, the second slide way 625 and the second limiting point 622 are connected end to jointly enclose a slide way 620. Along the sliding direction of the positioning needle 64 in the sliding channel 620, the slopes of the first sliding channel 624 and the second sliding channel 625 are gradually increased along the sliding direction of the positioning needle 64, and steps enabling the slopes of the corresponding sliding channels to drop steeply are arranged at positions close to the first limiting point 621 and the second limiting point 622. A first step 626 with a steep decrease is formed near the end of the first slide way 624, a second step 627 with a steep decrease is formed at the junction of the end of the first slide way 624 and the first limit point 621, a third step 628 with a steep decrease is formed at the junction of the first limit point 621 and the beginning of the second slide way 625, and a fourth step 629 with a steep decrease is formed at the junction of the end of the second slide way 625 and the second limit point 622. The slope of the first slide way 624 and the second slide way 625 facilitates the unidirectional sliding of the positioning pin 64 in cooperation, and the step arrangement not only ensures that the positioning pin 64 can only slide in one direction, but also temporarily restricts the positions of the positioning pin 64 at the first limit point 621 and the second limit point 622. The upper end surface of the limiting convex block 623 is concave downwards to form a limiting surface 6231 which can abut against the positioning pin 64 to limit the position of the slide block 61 in the unlocking state, and the structure and the steps are mutually matched to realize the constraint effect of the first limiting point 621 on the positioning pin 64. The slide 620 extends downwards from the second limit point 622 to form a limit groove 6221 for the positioning pin 64 to clamp therein so as to limit the position of the slide block 61 in the locking state, and a limit table 6222 capable of abutting against the positioning pin 64 is arranged at the lower side of the limit groove 6221. The end of the first sliding channel 624 and the beginning of the second sliding channel 625 respectively extend upward to form a Y-shaped structure together with the sliding channel 620 and the limiting groove 6221. The downward extending part of the tail end of the first slide channel 624 and the starting end of the second slide channel 625 are horizontally arranged, and the structure can provide a certain yielding space for the positioning pin 64 during track conversion, so that the motion track of the positioning pin 64 is more stably and smoothly matched with the forward and backward moving process of the sliding block 61.

In order to facilitate the installation and assembly of the positioning pin 64, the first end 641 of the positioning pin 64 extends left and right and extends into the slide 620 to be guided and engaged with the slide 620, and the second end of the positioning pin 64 is constrained on the housing 1 by the fourth elastic member 40. The body portion 642 of the detent pin 64 extends vertically, and the second end 643 extends in a direction opposite the first end 641 and is restrained in the housing 1. The fourth elastic member 40 is a U-shaped elastic sheet, which is transversely disposed in the housing 1, and the first side 401 is constrained in the housing 1, and the second side 402 abuts against the main body portion 642 of the positioning pin 64, so that the first end 641 of the positioning pin 64 always elastically abuts against the positioning groove 62.

In the present embodiment, a micro switch 7 electrically connected to a general controller of an electrical appliance is disposed in the housing 1, a third protrusion 67 is disposed on a lower portion of a left sidewall of the operating element 6, and a trigger piece 71 of the micro switch 7 is disposed close to the left sidewall of the operating element 6, can be pressed by the third protrusion 67 to trigger after the operating element 6 moves upwards, and is released from the third protrusion 67 after the operating element 6 moves downwards.

The first elastic member 10, the third elastic member 30 and the fifth elastic member 50 of the present embodiment are all linear springs.

When the door lock structure and the cleaning machine are in an unlocking state and need to be locked, the door is pressed downwards to close, the lock rod 2 is pressed downwards against the lock catch 4 to enable the lock catch 4 to rotate, and when the door body 9 is closed completely, the opening end of the C-shaped structure of the lock catch 4 is matched with the lock opening 21 at the lower end of the lock rod 2 to limit under the action of the second elastic piece 20, so that the lock rod 2 cannot move upwards; in the falling process of the door body 9, along with the turning of the lock catch 4, the stop piece 3 moves leftwards under the elastic force of the first elastic piece 10, so that the limit block 31 is separated from the limit notch 61 of the operating piece 6, and the operating piece 6 is in a state of moving up and down;

the switch on the door body 9 is pressed, the coil 631 of the driving mechanism is instantly electrified, the iron core 632 retracts to enable the operating piece 6 to move downwards, the positioning pin 64 enters the second slide way 625 from the first limiting point 621 under the pushing of the operating piece 6, the limiting of the operating piece 6 in an unlocking state is cancelled, the operating piece 6 moves upwards under the elastic force of the third elastic piece 30, the positioning pin 64 slides downwards along the second slide way 625 until the limiting piece 5 moves leftwards under the pushing of the operating piece 6 to limit the position of the lock catch 4, the lock catch 4 is prevented from turning over, and at the moment, the positioning pin 64 just moves to the second limiting point 622 to limit the position of the operating piece 6 in a locking state;

in the locking state, the cleaning machine program is allowed to be started under the condition that the micro switch 7 is also triggered; after the cleaning program is completed, the driving mechanism coil 631 is instantly powered on, the iron core 632 retracts to enable the operating part 6 to move downwards, the positioning pin 64 is separated from the second limiting point 622 and slides into the first slide way 624, the coil 631 is powered on, the operating part 6 moves downwards and simultaneously drives the limiting part 5 to move rightwards, the limiting of the lock catch 4 by the left end of the limiting part 5 is cancelled, at the moment, the positioning pin 64 gradually reaches the first limiting point 621 along the first slide way 624 to limit the position of the operating part 6, and the door body 9 is turned upwards to realize unlocking;

in the process of turning up the door body 9, the lock rod 2 drives the opening end of the lock catch 4 to overcome the elastic force of the second elastic part 20 and turn upwards, along with the turning of the lock catch 4, the left side wall of the lock catch 4 abuts against the first elastic part 10 and moves rightwards until the limiting block 31 is inserted into the limiting notch 61 of the operating part 6, and the position of the operating part 6 is limited so as to prevent the limiting part 5 from moving leftwards in the opening state of the door body 9.

In the unlocked state, the microswitch 7 is not triggered and the washer program is not allowed to turn on.

The embodiments of the present invention are exemplified by a washing machine having a top-opening door body, and therefore, in the description and claims of the present invention, the terms of orientation such as "upper", "lower", "left", "right", "side" and the like are used, but these terms of orientation merely indicate relative positional relationships and are not limited to absolute directions, for example, "upper" and "lower" are not limited to directions opposite to or coincident with the direction of gravity, but are mainly relative to the direction of movement of the door body.

In fact, the structure of the invention can be applied to washing machines with side-opening door bodies and other electric appliances, and the directional words in the text should be understood as adaptive adaptation.

Claims (23)

1. A door lock structure for an electric appliance, characterized in that: comprises that

A shell (1) which is used for connecting with the main body of the electric appliance and the top wall of which is provided with a socket (11) which is communicated up and down;

the upper end of the lock rod (2) is used for being connected with an electric appliance door body, the lower end of the lock rod is provided with a mouth-shaped locking opening (21) which can vertically move through the socket (11) on the shell, and can penetrate through the socket (11) on the shell (1) and be positioned in the shell (1) in a door locking state, and can penetrate through the socket (11) and be positioned on the shell (1) in an unlocking state;

the lock catch (4) is positioned in the shell (1) and is of a C-shaped structure, and the opening direction of the lock catch is opposite to the direction of the lock opening (21) of the lock rod (2); the middle part of the lock catch (4) can be rotatably arranged on the shell (1) and is positioned beside the lock opening (21); the opening of the lock catch (4) is arranged obliquely upwards corresponding to the lower end of the lock rod (2) in an unlocking state, and in a door locking state, under the action of downward propping and pressing of the lock rod (2), the opening end of the lock catch (4) gradually deflects towards the lock rod (2) along with downward movement of the lock rod (2) until entering a lock opening (21) of the lock rod (2) and is mutually buckled;

the stop piece (3) is arranged in the shell (1) in a left-right moving mode, the left end of the stop piece is abutted against the side part of the lock catch (4), and in the process that the opening end of the lock catch (4) is turned downwards, the stop piece (3) moves rightwards under the abutting action of the side part of the lock catch (4);

the first elastic piece (10) is arranged in the shell (1) and enables the stopper (3) to always keep the tendency of moving leftwards, and in the process that the opening end of the lock catch (4) is turned upwards, the stopper (3) moves leftwards under the action of the first elastic piece (10);

the operating part (6) is arranged in the shell (1) in a vertically movable mode and is positioned on the right side of the stop part (3), a limit block (31) is arranged at the right end of the stop part (3), and correspondingly, a limit notch (61) for the limit block (31) to be inserted into is formed in the left side of the operating part (6) so as to limit the limit block;

the limiting piece (5) is arranged at the upper part of the shell (1) in a left-right moving mode, the left end of the limiting piece (5) abuts against the upper side of the lock catch (4) and is prevented from turning upwards when moving leftwards, the limiting piece (5) moves rightwards to enable the left end of the limiting piece to be separated from the upper side of the lock catch (4) and cancel the limitation on the lock catch (4), and the limiting piece (5) is connected with the operating piece (6), moves leftwards under the driving action of the upward movement of the operating piece (6) and moves rightwards under the driving action of the downward movement of the operating piece (6); and

and the driving mechanism is arranged on the shell (1) and is used for driving the operating piece (6) to move up and down.

2. The door lock structure for electric appliances according to claim 1, wherein: and a third elastic piece (30) which can enable the operating piece (6) to always keep the upward movement trend is arranged in the shell (1).

3. The door lock structure for electric appliances according to claim 2, wherein: the driving mechanism is an electromagnetic assembly (63), the electromagnetic assembly (63) is arranged below the operating piece (6) and at least comprises a coil (631) and an iron core (632) capable of retracting under the power-on state of the coil (631), the iron core (632) can be arranged in the coil (631) in a vertically moving mode, the third elastic piece (30) is arranged on the lower side of the iron core (632), and the upper end of the iron core (632) is connected with the operating piece (6) and can provide pulling force for overcoming the third elastic piece (30) for the operating piece (6) under the power-on state of the coil (631).

4. The door lock structure for electric appliances according to claim 2, wherein: the limiting structure capable of limiting the operating part (6) at the end part of the moving stroke of the operating part is arranged in the shell (1), the limiting structure comprises a positioning needle (64) and a positioning groove (62) formed in the side wall of the operating part (6), the positioning needle (64) is arranged on the side wall of the operating part (6) and one end of the positioning needle can be inserted into the positioning groove (62) in a sliding mode.

5. The door lock structure for electric appliances according to claim 4, wherein: the positioning needle (64) is at least partially arranged perpendicular to the positioning groove (62), the positioning groove (62) at least has a slideway (620) only allowing the positioning needle (64) to slide in the positioning groove (62) in one direction, a first limiting point (621) capable of being matched and limited with the positioning needle (64) in an unlocking state is formed at the upper end of the slideway (620), and a second limiting point (622) capable of being matched and limited with the positioning needle (64) in a locking state is formed at the lower end of the slideway (620).

6. The door lock structure for electric appliances according to claim 5, wherein: the first limiting point (621) and the second limiting point (622) are arranged at intervals, a limiting bump (623) is arranged between the first limiting point and the second limiting point, the positioning groove (62) is provided with a first slide way (624) which bypasses the first side of the limiting bump (623) and communicates the first limiting point (621) with the second limiting point (622), and a second slide way (625) which bypasses the second side of the limiting bump (623) and communicates the first limiting point (621) with the second limiting point (622), and the first slide way (624), the first limiting point (621), the second slide way (625) and the second limiting point (622) are connected end to jointly enclose the slide way (620).

7. The door lock structure for electric appliances according to claim 6, wherein: along the sliding direction of the positioning needle (64) in the slideway (620), the slopes of the first slideway (624) and the second slideway (625) are gradually increased, and steps which can enable the slope of the corresponding slideway (620) to be steeply reduced are arranged at positions close to the first limiting point (621) and the second limiting point (622).

8. The door lock structure for electric appliances according to claim 7, wherein: a first step (626) which is suddenly reduced is formed at the position close to the tail end of the first slide way (624), a second step (627) which is suddenly reduced is formed at the joint of the tail end of the first slide way (624) and a first limiting point (621), a third step (628) which is suddenly reduced is formed at the joint of the first limiting point (621) and the starting end of the second slide way (625), and a fourth step (629) which is suddenly reduced is formed at the joint of the tail end of the second slide way (625) and the second limiting point (622).

9. The door lock structure for electric appliances according to claim 8, wherein: the upper end surface of the limit bump (623) is concave downwards to form a limit surface (6231) which can be abutted against the positioning needle (64) so as to limit the position of the operating piece (6) in an unlocking state.

10. The door lock structure for electric appliances according to claim 9, wherein: the sliding way (620) extends downwards from the second limiting point (622) to form a limiting groove (6221) for the positioning needle (64) to clamp, and a limiting table (6222) capable of abutting against the positioning needle (64) is arranged on the outer side of the limiting groove (6221).

11. The door lock structure for electric appliances according to claim 10, wherein: the tail end of the first slide way (624) and the starting end of the second slide way (625) respectively extend upwards to form a Y-shaped structure together with the slide way (620) and the limiting groove (6221).

12. The door lock structure for electric appliances according to claim 11, wherein: the end of the first slide way (624), the part extending downwards from the beginning of the second slide way (625) are horizontally arranged.

13. The door lock structure for electric appliances according to any one of claims 5 to 12, characterized in that: the first end (641) of the positioning needle (64) extends left and right and extends into the slideway (620) to be matched with the slideway (620) in a guiding way, and the second end (643) of the positioning needle (64) is restrained on the shell (1).

14. The door lock structure for electric appliances according to claim 13, wherein: the main body part (642) of the positioning needle (64) extends vertically, the second end (643) extends to the direction opposite to the first end (641) and is restrained in the shell (1), and the shell (1) is provided with a fourth elastic piece (40) which can enable the first end (641) of the positioning needle (64) to elastically abut against the positioning groove (62).

15. The door lock structure for electric appliances according to claim 14, wherein: the fourth elastic piece (40) is a U-shaped elastic piece, the U-shaped elastic piece is transversely arranged in the shell (1), the first side (401) of the U-shaped elastic piece is restrained in the shell (1), the second side (402) of the U-shaped elastic piece is abutted against the main body portion (642) of the positioning needle (64), and therefore the first end (641) of the positioning needle (64) is always elastically abutted against the positioning groove (62).

16. The door lock structure for electric appliances according to any one of claims 1 to 12, wherein: the limiting piece (5) is located on the rear side of the operating piece (6), a guide post (60) extending backwards is arranged on the rear side wall of the operating piece (6), and correspondingly, a guide groove (51) which can be in sliding fit with the guide post (60) is formed in the front side wall of the limiting piece (5) so that the limiting piece (5) moves left and right along with the up and down movement of the operating piece (6).

17. The door lock structure for electric appliances according to claim 16, wherein: the guide groove (51) comprises a first part (511) which is positioned at the lower part and extends vertically and a second part (512) which extends from the upper end of the first part (511) to the right in an inclined way.

18. The door lock structure for electric appliances according to any one of claims 2 to 12, wherein: the driving mechanism comprises a pull rod (65) and a fifth elastic piece (50), the pull rod (65) is arranged in the shell (1) in a vertically movable mode, the lower end of the pull rod is exposed out of the shell (1), and the fifth elastic piece (50) is arranged in the shell (1) and enables the pull rod (65) to always keep the trend of moving upwards; the right side wall of the operating part (6) is provided with a first bump (66), and correspondingly, the left side wall of the pull rod (65) is provided with a second bump (651) which can be clamped with the first bump (66) after moving downwards so as to drive the operating part (6) to move downwards.

19. The door lock structure for electric appliances according to any one of claims 1 to 12, characterized in that: still including second elastic component (20), adopt the hasp torsional spring, including the extension arm at middle spirochaeta (201) and both ends, wherein middle spirochaeta (201) freely unsettled and lie in and deviate from one side of hasp (4) C shape opening direction, first arm end (202) with the outward flange at hasp (4) middle part is connected, and the terminal (203) of second arm is retrained on casing (1).

20. The door lock structure for electric appliances according to any one of claims 1 to 12, characterized in that: the electric switch is characterized in that a microswitch (7) electrically connected with a master controller of an electric appliance is arranged in the shell (1), a third bump (67) is arranged on the lower portion of the left side wall of the operating element (6), and a trigger piece (71) of the microswitch (7) is arranged close to the left side wall of the operating element (6) and can be pressed and triggered by the third bump (67) after moving upwards on the operating element (6) and is far away from the third bump (67) to be released from triggering after the operating element (6) moves downwards.

21. The door lock structure for electric appliances according to any one of claims 1 to 12, characterized in that: the top wall of the shell (1) is provided with an elastic soft film (110) capable of covering the socket (11), and the elastic soft film (110) is provided with a slit (1101) through which the lower end of the lock rod (2) can extrude.

22. A cleaning machine with the door lock structure for the electric appliance according to any one of claims 1 to 21 comprises a box body (8) and a door body (9), wherein the box body (8) is provided with a washing cavity and an upper port (81) communicated with the top of the washing cavity, one edge of the door body (9) is rotatably connected to the edge of the upper port (81) of the box body (8), the shell (1) is arranged on the box body (8) and the insertion opening (11) is arranged upwards, and the lock rod (2) is arranged on the door body (9) and is arranged corresponding to the insertion opening (11).

23. The cleaning machine of claim 22, wherein: the edge of the port (81) on the box body (8) is provided with a saddle (811) which extends horizontally and outwards, and the saddle (811) is provided with an opening (812) which is arranged corresponding to the socket (11).

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