CN112112500B - Door lock mechanism for electric appliance and dish washing machine with door lock mechanism - Google Patents
Door lock mechanism for electric appliance and dish washing machine with door lock mechanism Download PDFInfo
- Publication number
- CN112112500B CN112112500B CN202010854936.6A CN202010854936A CN112112500B CN 112112500 B CN112112500 B CN 112112500B CN 202010854936 A CN202010854936 A CN 202010854936A CN 112112500 B CN112112500 B CN 112112500B
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- hook
- locking
- door
- shell
- pressing block
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
- E05C19/022—Released by pushing in the closing direction
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4257—Details of the loading door
- A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
A door latch mechanism for an appliance comprising: a shell (3) with a locking notch (30) on the top wall; a lock rod (4) with a C-shaped hook part (41); a pressing block (5) which can move up and down and is arranged below the locking opening (30); a first elastic member (61) acting on the pressure piece (5); the locking mechanism comprises a locking hook (7) which can be rotatably connected in a shell, wherein the opening direction of the locking hook (7) is opposite to that of a hook part (41), the lower end (71) of the locking hook (7) is restrained below the top of a pressing block (5), the upper end (72) is located beside the pressing block (5) in an unlocking state, and a limiting structure is arranged on the peripheral wall of the locking hook (7); a second elastic element (62) acting on the latch hook (7); and the elastic sheet (8) is matched with the limiting structure. The invention also discloses a dishwasher with the door lock mechanism. Compared with the prior art, the method and the device have the advantages of low requirement on electric control logic, high reliability and convenience in opening and closing the door.
Description
Technical Field
The invention relates to a door lock mechanism for an electric appliance and a dish washing machine with the door lock mechanism.
Background
In the existing electric appliance, such as a steam box, a steam oven, a dish washing machine and the like, the opening of the box body is opened or closed by the box body with a functional inner cavity and the door body arranged on the opening of the box body, and in the use process of the electric appliance, the door body needs to be locked on the box body in order to avoid the door body from being accidentally opened.
In the prior art, a door body is usually locked and unlocked by providing an electric component and a controller, for example, a chinese patent application "door opening and closing mechanism and dish washing machine having the same" (application publication No. CN1550202A) with application No. CN200410043122.5 discloses a door opening and closing structure, which includes: 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 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 dish 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 mechanism 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 invention is to provide a dishwasher with the door lock mechanism, which is convenient for opening and closing the door and can improve the safety and reliability in the use process.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a door lock mechanism for an electrical appliance, comprising:
the shell is used for being connected with the electric appliance main body, and a lock notch which is communicated up and down is formed in the top wall of the shell;
the locking rod, its upper end is used for linking with door body of the electrical apparatus, the underpart has hook portion of C-type, the locking rod can cross the said fore shaft moving up and down, and penetrate the said fore shaft and locate in body under the state of locking the door, penetrate the said fore shaft and locate above the fore shaft under the state of unlocking;
the pressing block is positioned in the shell and can be arranged below the locking notch in a vertically moving mode, and the top of the pressing block is opposite to the lower end part of the locking rod; the lock rod is provided with a pressing block, the pressing block is arranged at an initial position in an unlocking state, the pressing block moves downwards to a door locking position in a door locking state, and the pressing block can further move downwards to a limit position under the action of downward abutting pressure of the lock rod in the door locking state;
the first elastic piece is positioned in the shell and acts on the pressing block, so that the pressing block always has the tendency of moving upwards to the initial position;
the locking hook is positioned in the shell and is of a C-shaped structure with an opening, and the opening direction of the locking hook is opposite to that of the hook part; the middle part of the lock hook can be rotatably connected to the shell, the lower end of the lock hook is restrained below the top of the pressing block, the upper end of the lock hook is located beside the pressing block in an unlocking state, the upper end of the lock hook deflects to be buckled with the hook part in the direction of the lock rod under the action of the pressing block in a door locking state, and the upper end of the lock hook in the door locking state can be further buckled on the hook part along with the downward movement of the pressing block; a limiting structure is arranged on the outer peripheral wall of the lock hook;
the second elastic piece is positioned in the shell and acts on the locking hook, so that the upper end of the locking hook always has the tendency of deflecting back to the locking rod;
the shell fragment is arranged in the shell, the first end part of the shell fragment is movably connected to the shell, the second end part is provided with a clamping part arranged towards the lock hook direction, the clamping part is matched with the limiting structure to limit the lock hook to rotate in the door locking state, and the clamping part is further buckled on the hook part along with the upper end of the lock hook to separate from the limiting structure in the door locking state.
The limiting structure comprises a first convex block arranged on the outer peripheral wall of the lock hook, a clamping groove capable of being matched with the clamping part for limiting is formed between a first end and a second end of a first side wall, far away from the upper end of the lock hook, of the first convex block, a second side wall, close to the upper end of the lock hook, of the first convex block is an inclined surface, the inclined surface extends from the first end of the first side wall to a position above the second end, and a third side wall of the first convex block is a guide surface which extends upwards from the second end of the first side wall and is connected with the inclined surface; the third elastic piece acts on the elastic piece, so that the clamping part of the elastic piece always has the trend of moving from the first end to the second end. Furthermore, the door can be locked and unlocked by the cooperation of a pure mechanical structure. Of course, the limiting structure is not limited to the structure of the first protrusion, and a limiting groove may be formed in the outer peripheral wall of the locking hook, or in other manners.
Furthermore, the limiting structure further comprises a second convex block arranged on the outer peripheral wall of the lock hook, the second convex block is arranged below the first convex block, the upper side wall of the second convex block is opposite to the clamping groove on the first convex block, and a channel for the clamping part to pass through is formed between the upper side wall of the second convex block and the clamping groove.
For further improving the structural stability, preferably, the limiting structure further includes an arc-shaped guide block for guiding the card portion moving to the second end of the first side wall from bottom to top along the end surface of the card portion moving to the inclined surface, the arc-shaped guide block is arranged beside the first convex block, the side wall of the arc-shaped guide block is connected with the guide surface of the first convex block, the end surface of the arc-shaped guide block is lower than the end surface of the first convex block, the lower end portion of the arc-shaped guide block is arranged corresponding to the second end of the first convex block and is connected with the outer peripheral wall of the lock hook, an L-shaped mouth portion is formed at the upper end of the arc-shaped guide block, and the wall surface of the mouth portion is smoothly connected with the inclined surface.
Furthermore, the first end of the elastic sheet is rotatably connected to the shell, the third elastic piece comprises a third spring, one end of the third spring is connected to the shell, and the other end of the third spring is connected to the elastic sheet, so that the elastic sheet always tends to rotate from the first end to the second end.
In order to deal with the situation that unlocking cannot be realized under abnormal conditions, the unlocking device preferably further comprises a reset body for jacking the elastic sheet to enable the clamping part on the elastic sheet to be separated from the clamping groove, the reset body is L-shaped, the reset body is arranged in the shell and located beside the elastic sheet, the middle part of the reset body is rotatably connected to the shell, and the upper end part of the reset body is opposite to one side where the clamping part of the elastic sheet is located. The bottom surface of the shell is provided with a through hole, and the lower end part of the restoring body is positioned above the through hole. Furthermore, the lower end part of the reset body is upwards jacked up through the through hole, the reset body rotates and drives the upper end part of the reset body to act on the elastic sheet, and the clamping part on the elastic sheet is separated from the clamping groove, so that unlocking can be realized.
In the above scheme, in order to enable the downward movement of the pressing block to drive the locking hook to rotate better, preferably, the pressing block is of a C-shaped structure with a first opening, and the first opening of the pressing block is arranged towards the lower end of the locking hook so as to allow the lower end of the locking hook to penetrate through; the lower end of the lock hook abuts against the edge of the first opening of the pressing block in the door locking state.
Preferably, the first elastic member is a first spring disposed below the pressing block, an upper end surface of the first spring abuts against a bottom surface of the pressing block, and a lower end surface of the first spring abuts against the housing.
Preferably, the middle part of the lock hook is connected to the shell through a rotating shaft, and the second elastic part is a torsion spring sleeved on the rotating shaft.
The improved structure comprises a lock body, a pressing block and a door lock sealing ring, wherein the pressing block moves upwards under the action of a first elastic piece and abuts against a lock opening of a shell to enable the pressing block to be located at an initial position in the unlocking state, and the door lock sealing ring is sleeved on the top of the pressing block and is in sealing connection with the shell in the state that the pressing block abuts against the lock opening of the shell. So as to prevent water from splashing into the shell when the door body is opened.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides a dish washer, includes the electrical apparatus main part and the electrical apparatus door body, the electrical apparatus main part has the washing chamber and has the upper shed that is linked together with the washing chamber, an edge of the electrical apparatus door body rotates to be connected in electrical apparatus main part upper shed's edge, its characterized in that still includes as above door lock mechanism, the casing is located on the electrical apparatus main part and the fore shaft sets up, the locking lever locate on the electrical apparatus door body and with the fore shaft is relative.
Compared with the prior art, the invention has the advantages that: when the door needs to be closed, the lock rod is pressed into the lock opening by applying downward pressure on the lock rod, the pressing block moves downwards to an extreme position under the action of the lock rod and drives the lock hook to rotate so that the lower end of the lock hook deflects back to the lock rod, and the upper end of the lock hook deflects towards the lock rod to be buckled with the hook part; after the pressure applied on the lock rod is released, the pressing block moves upwards for a certain distance under the action of the first elastic piece, the lock hook rotates reversely under the action of the second elastic piece, the upper end of the lock hook is still buckled on the hook part, and the clamping part on the elastic piece is matched with the limiting structure on the lock hook to limit the lock hook to rotate, so that the door locking state is realized; when the door needs to be opened, downward pressure is exerted on the lock rod again to move the press block downwards to the limit position, the press block drives the lock hook to rotate, so that the upper end of the lock hook is further buckled on the hook part, the rotating lock hook enables the clamping part on the elastic sheet to be separated from the limiting structure, then after the pressure exerted on the lock rod is released, the press block moves upwards under the action of the first elastic part and pushes the lock rod upwards, the lock hook rotates under the action of the second elastic part to be separated from the hook part, and the door opening state is further realized;
therefore, according to the scheme of the invention, the door can be opened and closed by pressing the door body downwards, the use is convenient, and a handle is not required to be arranged on the door body. And the pressure exerted on the lock rod is smaller when the door is opened and locked, and the door can be opened and closed only by overcoming the force of the first elastic piece and then slightly pressing the door body, so that the operation of a user is more convenient. Meanwhile, the door lock mechanism is realized through the cooperation of a mechanical structure, electric control is not needed, the running reliability is high, and the product quality is improved.
Drawings
FIG. 1 is a schematic view of a dishwasher according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the door lock mechanism (unlocked state) in the embodiment of the present invention;
FIG. 3 is a sectional view (unlocked state) of the door lock mechanism in the embodiment of the present invention;
FIG. 4 is a cross-sectional view of an alternate perspective of the door latch mechanism in an embodiment of the present invention (unlocked state);
FIG. 5 is another cross-sectional view of the door lock mechanism in an embodiment of the present invention (unlocked state);
FIG. 6 is a sectional view of the door lock mechanism in the embodiment of the present invention (a state where the pressing piece is moved down from the initial position to the extreme position);
FIG. 7 is another perspective sectional view of the door lock mechanism in the embodiment of the present invention (the pressing piece is moved down from the initial position to the extreme position);
FIG. 8 is another cross-sectional view of the door lock mechanism in the embodiment of the present invention (the state where the pressing piece is moved down from the initial position to the extreme position);
fig. 9 is a sectional view (door locking state) of the door lock mechanism in the embodiment of the present invention;
FIG. 10 is a cross-sectional view of an alternate view of the door locking mechanism in an embodiment of the present invention (locked state);
fig. 11 is another sectional view (door locking state) of the door lock mechanism in the embodiment of the present invention;
FIG. 12 is a sectional view of the door lock mechanism in the embodiment of the present invention (a state where the pressing piece is moved down from the door lock position to the extreme position);
FIG. 13 is a cross-sectional view of an alternative view of the door lock mechanism in an embodiment of the present invention (with the pressure piece moved down from the locked position to an extreme position);
FIG. 14 is another cross-sectional view of the door lock mechanism in the embodiment of the present invention (the pressing piece is moved down to the extreme position from the door lock position);
FIG. 15 is a schematic structural diagram of a latch hook according to an embodiment of the present invention;
fig. 16 is a schematic structural view of another view of the latch hook according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1 to 16, a preferred embodiment of a door lock mechanism for an electric appliance and a dishwasher having the same according to the present invention is shown, in which the dishwasher includes an electric appliance body 1, an electric appliance door body 2 and the door lock mechanism, the electric appliance body 1 has a washing chamber 10 and an upper opening 11 communicated with the washing chamber 10, and an edge of the electric appliance door body 2 is rotatably connected to an edge of the upper opening 11 of the electric appliance body 1.
The door lock mechanism comprises a shell 3, a lock rod 4, a pressing block 5, a first elastic piece 61, a lock hook 7, a second elastic piece 62, an elastic piece 8, a third elastic piece 63 and a reset body 9.
Wherein, the shell 3 is connected on the outer side wall of the electric appliance body 1, the top wall of the shell 3 is provided with a lock notch 30 which is communicated up and down, and the lock notch 30 is arranged upwards.
The lock rod 4 has an upper end connected to the electric appliance door body 2 and a lower end provided with a C-shaped hook 41, the hook 41 is opposite to the lock opening 30, the lock rod 4 can vertically move to penetrate through the lock opening 30, penetrate through the lock opening 30 to be positioned in the shell 3 in a door locking state, and penetrate through the lock opening 30 to be positioned above the lock opening 30 in an unlocking state.
The pressing block 5 is positioned in the shell 3 and can be arranged below the locking notch 30 in a vertically moving mode, and the top of the pressing block 5 is opposite to the lower end portion of the locking rod 4. The pressing block 5 is of a C-shaped structure with a first opening 52, and the first opening 52 of the pressing block is located on the right side and is arranged towards the lower end 71 of the locking hook 7 so that the lower end 71 of the locking hook 7 can penetrate. The first elastic member 61 is a first spring disposed below the pressing block 5, and an upper end surface of the first spring abuts against a bottom surface of the pressing block 5, and a lower end surface of the first spring abuts against the housing 3, so that the pressing block 5 always tends to move upward. Under the state of unlocking, the pressing block 5 moves up to the initial position under the action of the first elastic piece 61 and abuts against the locking notch 30 of the shell 3, in order to improve the sealing performance of the shell 3 under the state of unlocking and prevent water from entering the shell 3, the door lock sealing ring device further comprises a door lock sealing ring 31, and the door lock sealing ring 31 is sleeved on the top of the pressing block 5 and is connected with the shell 3 in a sealing mode in the state that the pressing block 5 abuts against the locking notch 32 of the shell 3. In the door locking state, the pressing block 5 moves downwards to the door locking position under the action of the downward abutting pressure of the locking rod 4. The pressing piece 5 located at the door locking position can further move downwards to the limit position under the action of the downward biasing force of the locking rod 4. In the up-down direction, the height of the extreme position < the height of the door-locking position < the height of the initial position.
The locking hook 7 is positioned in the shell 3 and arranged on the right side of the pressing block 5, the locking hook 7 is of a C-shaped structure with an opening, and the opening direction of the locking hook 7 is opposite to the opening direction of the hook part 41; the middle part of the locking hook 7 is connected to the housing 3 through a rotating shaft, the lower end 71 of the locking hook 7 is constrained in the first opening 52 of the pressing block 5, when the pressing block 5 moves downwards, the locking hook 7 is driven to rotate anticlockwise, the upper end 72 of the locking hook 7 is located beside the pressing block 5 in an unlocking state, but in a door locking state, the upper end 72 of the locking hook 7 deflects towards the direction of the hook part 41 under the action of the downward moving pressing block 5 until being buckled with the hook part 41, and the upper end 72 of the locking hook 7 in the door locking state can be further buckled on the hook part 41 along with the downward movement of the pressing block 5. The lower end 71 of the locking hook 7 abuts against the edge of the first opening 52 of the pressing block 5 in the door locking state, and the lower end 71 of the locking hook 7 in the door locking state can still abut against the edge of the first opening 52 of the pressing block 5 along with the downward movement of the pressing block 5. The second elastic element 62 is a torsion spring sleeved on the rotating shaft, so that when the pressing block 5 moves upwards, the locking hook 7 rotates clockwise under the action of the second elastic element 62, and the upper end 72 of the locking hook 7 always has a tendency of deflecting back to the locking lever 4.
In this embodiment, in order to realize that the latch hook 7 and the hook portion 41 are kept in the locked state to lock the door, a limiting structure is disposed on the peripheral wall of the latch hook 7, the elastic piece 8 is located in the housing 3, a first end of the elastic piece 8 is rotatably connected to the housing 3, and a second end of the elastic piece has a cylindrical clamping portion 81 disposed toward the latch hook 7. In the door locking state, the locking portion 81 is matched with the limiting structure to limit the rotation of the locking hook 7, and the locking portion 81 in the door locking state is further buckled on the hook portion 41 along with the upper end 72 of the locking hook 7 to separate from the limiting structure, so that unlocking is realized. The concrete structure is as follows:
the limiting structure comprises a first projection 73, a second projection 74 and an arc-shaped guide block 75 which are arranged on the outer peripheral wall of the locking hook 7. The first protrusion 73 is triangular, a locking groove 731 capable of being matched with the locking portion 81 for limiting is formed between a first end 734 and a second end 735 of the first side wall of the first protrusion 73, which is far away from the upper end 72 of the locking hook 7, a second side wall of the first protrusion 73, which is near the upper end 72 of the locking hook 7, is an inclined surface 732, the inclined surface 732 extends from the first end 734 of the first side wall to a position above the second end 735, and a third side wall of the first protrusion 73 is a guiding surface 733, which extends upward from the second end 735 of the first side wall and is connected with the inclined surface 732. The second protrusion 74 is disposed on the outer peripheral wall of the latch hook 7 and below the first protrusion 73, and an upper side wall of the second protrusion 74 is opposite to the engaging groove 731 of the first protrusion 73, and a channel 740 is formed between the engaging groove 731 and the second protrusion 74 for passing the engaging portion 81. The arc-shaped guide block 75 is used for guiding the clamping portion 81 moving to the second end 735 of the first side wall to move to the inclined surface 732 from bottom to top along the end surface thereof, the arc-shaped guide block 75 is arranged beside the first projection 73, the side wall of the arc-shaped guide block 75 is connected with the guide surface 733 of the first projection 73, the end surface of the arc-shaped guide block 75 is lower than the end surface of the first projection 73 to form a recess, the lower end portion of the arc-shaped guide block 75 is arranged corresponding to the second end 735 of the first projection 73 and is connected with the outer peripheral wall of the locking hook 7, the upper end portion is formed with an L-shaped mouth portion 750, and the wall surface of the mouth portion 750 is smoothly connected with the inclined surface 732. The third elastic element 63 is a third spring acting on the elastic sheet 8, one end of the third spring is connected to the housing 3, and the other end is connected to the elastic sheet 8, so that the locking portion 81 on the elastic sheet 8 always has a tendency to move from the first end 734 to the second end 735 of the first side wall.
The reset body 9 is used for pushing the elastic sheet 8 to enable the clamping portion 81 on the elastic sheet 8 to be separated from the clamping groove 731, the reset body 9 is L-shaped, the reset body 9 is arranged in the shell 3 and located on the side of the elastic sheet 8, the middle of the reset body 9 is rotatably connected to the shell 3, and the upper end portion of the reset body is opposite to one side where the clamping portion 81 of the elastic sheet 8 is located. The bottom surface of the shell 3 is provided with a through hole 32, and the lower end part of the reset body 9 is positioned above the through hole 32. Furthermore, act on the restoring body through-hole 32 to the lower tip that the jack-up of restoring body 9 can realize that the upper end of restoring body 9 deflects towards shell fragment 8, and then stirs shell fragment 8, makes card portion 81 on the shell fragment 8 break away from draw-in groove 731 and realizes manually unblanking.
In this embodiment, in order to realize that the dishwasher can only work when the door is locked, the dishwasher further comprises the microswitch 100 and the controller, the microswitch 100 can be triggered only when the door is locked, and then the dishwasher is controlled to work through the controller, so that the use safety is improved.
The process of locking and unlocking the door in this embodiment is as follows:
in the unlocking state, the pressing block 5 is located at the initial position, the upper end 72 of the locking hook 7 deflects clockwise under the action of the second elastic element 62 and is located beside the pressing block 5, and the lower end 71 of the locking hook 7 is located in the first opening 52 of the pressing block 5 and abuts against the pressing block 5. At this time, the locking portion 81 of the spring plate 8 is located on the opening 750 of the arc guide block 75.
When the door needs to be locked, the electric appliance door body 2 is pressed downwards, the lock rod 4 on the electric appliance door body 2 moves downwards and penetrates into the lock opening 30, the press block 5 moves downwards to the limit position under the action of the lock rod 4, the lock hook 7 rotates anticlockwise under the action of the press block 5 to enable the upper end 72 of the lock hook 7 to deflect towards the lock rod 4 to be buckled with the hook part 41, and the lower end 71 of the lock hook 7 rotates outwards for a certain angle and still abuts against the edge of the first opening 52 of the press block 5; after the pressing block 5 moves to the extreme position, the pressing force applied to the electric appliance door body 2 is released, the pressing block 5 moves up to the door locking position under the action of the first elastic piece 61, the locking hook 7 rotates clockwise by a certain angle under the action of the second elastic piece 62, but the upper end 72 of the locking hook 7 is still buckled on the hook part 41 of the locking rod 4. During the process that the pressing block 5 moves from the initial position to the limit position, the locking portion 81 on the resilient tab 8 moves downward along the inclined surface 732 on the first protrusion 73 to the first end 734 of the first side wall along with the counterclockwise rotation of the locking hook 7. In the process that the pressing block 5 moves from the limit position to the door locking position, the clamping part 81 on the elastic sheet 8 rotates clockwise along with the locking hook 7 and enters the channel 740 between the first projection 73 and the second projection 74 under the action of the third elastic member 63 and is limited on the clamping groove 731 of the first projection 73 so as to be incapable of moving, and then the positions of the locking hook 7, the locking rod 4 and the pressing block 5 are limited, so that the door locking is realized.
When the lock needs to be unlocked, the electric appliance door body 2 is pressed downwards again, the pressing block 5 moves downwards from the door locking position to the limiting position under the action of the lock rod 4, the lock hook 7 rotates anticlockwise under the action of the pressing block 5, so that the upper end 72 of the lock hook 7 is further buckled on the hook part 41 of the lock rod 4, and in the process, the clamping part 81 on the elastic sheet 8 rotates anticlockwise along with the lock hook 7 and is separated from the limitation of the clamping groove 731 under the action of the third elastic piece 63 and is positioned beside the second end 735 of the first side wall on the first projection 73; then the pressing force applied on the electric appliance door body 2 is released, the pressing block 5 moves up to the initial position under the action of the first elastic piece 61, the locking hook 7 rotates clockwise under the action of the second elastic piece 62 to enable the upper end 72 of the locking hook 7 to be separated from the hook part 41 of the locking rod 4, and the locking rod 4 can penetrate out of the locking notch 30 from bottom to top to realize unlocking. In this process, the locking portion 81 of the resilient tab 8 moves upward along the end surface of the arc-shaped guide 75 to the L-shaped opening 750 of the arc-shaped guide 75 along with the clockwise rotation of the locking hook 7.
Therefore, this embodiment can realize locking the door and unblanking, facilitates the use through pressing the electrical apparatus door body.
The embodiment of the present invention is exemplified by a dishwasher having a top-opening door body, and therefore, in the description and claims of the present invention, directional terms such as "upper", "lower", "left", "right", "side" and the like are used, but these directional terms 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 present invention is equally applicable to dishwashers having side-opening doors, as well as other appliances, and the directional terms herein should be understood as being adaptable.
Claims (10)
1. A door lock mechanism for an electrical appliance, comprising:
the shell (3) is used for being connected with the electric appliance main body (1), and the top wall of the shell is provided with a vertically through locking notch (30);
the upper end part of the lock rod (4) is used for being connected with the electric appliance door body (2), the lower end part of the lock rod is provided with a C-shaped hook part (41), the lock rod (4) can penetrate through the lock opening (30) in a vertically moving mode, penetrates through the lock opening (30) and is positioned in the shell (3) in a door locking state, and penetrates through the lock opening (30) and is positioned above the lock opening (30) in an unlocking state;
the pressing block (5) is positioned in the shell (3) and can be arranged below the locking port (30) in a vertically moving mode, and the top of the pressing block (5) is opposite to the lower end part of the locking rod (4); in the unlocking state, the pressing block (5) is located at the initial position, in the door locking state, the pressing block (5) moves downwards to the door locking position, and in the door locking state, the pressing block (5) can further move downwards to the limit position under the action of downward abutting pressure of the lock rod (4);
a first elastic member (61) located inside the housing (3) and acting on the pressure piece (5) to make the pressure piece (5) always have a tendency to move upwards to an initial position;
the locking hook (7) is positioned in the shell (3), the locking hook (7) is of a C-shaped structure with an opening, and the opening direction of the locking hook (7) is opposite to the opening direction of the hook part (41); the middle part of the lock hook (7) is rotatably connected to the shell (3), the lower end (71) of the lock hook (7) is restrained below the top of the pressing block (5), the upper end (72) of the lock hook (7) is located beside the pressing block (5) in an unlocking state, in a door locking state, under the action of the pressing block (5), the upper end (72) of the lock hook (7) deflects to be buckled with the hook part (41) towards the direction of the lock rod (4), and the upper end (72) of the lock hook (7) in the door locking state can be further buckled on the hook part (41) along with downward movement of the pressing block (5); a limiting structure is arranged on the outer peripheral wall of the lock hook (7);
a second elastic element (62) which is positioned in the housing (3) and acts on the locking hook (7) so that the upper end (72) of the locking hook (7) always has a tendency to deflect back to the locking lever (4);
the elastic sheet (8) is positioned in the shell (3), the first end part of the elastic sheet (8) is movably connected to the shell (3), and the second end part of the elastic sheet is provided with a clamping part (81) arranged towards the locking hook (7);
the limiting structure comprises a first protruding block (73) arranged on the outer peripheral wall of the locking hook (7), a clamping groove (731) capable of being matched with the clamping part (81) for limiting is formed between a first end (734) and a second end (735) of a first side wall of the first protruding block (73) far away from the upper end (72) of the locking hook (7), a second side wall of the first protruding block (73) close to the upper end (72) of the locking hook (7) is an inclined surface (732), the inclined surface (732) extends from the first end (734) to a position above the second end (735), and a third side wall of the first protruding block (73) is a guide surface (733) which extends upwards from the second end (735) of the first side wall and is connected with the inclined surface (732);
the door lock mechanism further comprises:
a third elastic member (63) acting on the spring plate (8) to make the clamping part (81) of the spring plate (8) always have a trend of moving from the first end (734) to the second end (735);
under the door locking state, the clamping part (81) is matched with the clamping groove (731) of the limiting structure to limit the locking hook (7) to rotate, and the clamping part (81) under the door locking state is further buckled on the hook part (41) along with the upper end (72) of the locking hook (7) to be separated from the clamping groove (731) of the limiting structure and is positioned beside the second end (735) of the first side wall of the first convex block (73).
2. The door lock mechanism according to claim 1, wherein: the limiting structure further comprises a second bump (74) arranged on the outer peripheral wall of the locking hook (7), the second bump (74) is arranged below the first bump (73), the upper side wall of the second bump (74) is opposite to the clamping groove (731) on the first bump (73), and a channel (740) for the clamping part (81) to pass through is formed between the upper side wall of the second bump (74) and the clamping groove (731).
3. The door lock mechanism according to claim 1, wherein: the limiting structure further comprises an arc-shaped guide block (75) used for guiding the clamping part (81) moving to the second end (735) of the first side wall to move to the inclined surface (732) from bottom to top along the end surface of the clamping part, the arc-shaped guide block (75) is arranged beside the first convex block (73), the side wall of the arc-shaped guide block is connected with a guide surface (733) of the first convex block (73), the end surface of the arc-shaped guide block (75) is lower than the end surface of the first convex block (73), the lower end part of the arc-shaped guide block (75) is arranged corresponding to the second end (735) of the first convex block (73) and is connected with the outer peripheral wall of the locking hook (7), an L-shaped mouth part (750) is formed at the upper end part, and the wall surface of the mouth part (750) is connected with the inclined surface (732) in a smooth mode.
4. The door lock mechanism according to claim 1, wherein: the first end portion of the elastic sheet (8) is rotatably connected to the shell (3), the third elastic piece (63) comprises a third spring, one end of the third spring is connected to the shell (3), and the other end of the third spring is connected to the elastic sheet (8), so that the elastic sheet (8) always tends to rotate from the first end (734) to the second end (735).
5. The door lock mechanism according to claim 1, wherein: the resetting body (9) is used for jacking the elastic sheet (8) to enable the clamping part (81) on the elastic sheet (8) to be separated from the clamping groove (731), the resetting body (9) is L-shaped, the resetting body (9) is arranged in the shell (3) and located beside the elastic sheet (8), the middle part of the resetting body (9) is rotatably connected to the shell (3), and the upper end part of the resetting body is opposite to one side where the clamping part (81) of the elastic sheet (8) is located; a through hole (32) is formed in the bottom surface of the shell (3), and the lower end of the restoring body (9) is located above the through hole (32).
6. The door lock mechanism according to claim 1, wherein: the pressing block (5) is of a C-shaped structure with a first opening (52), and the first opening (52) of the pressing block (5) is arranged towards the lower end (71) of the locking hook (7) so as to allow the lower end (71) of the locking hook (7) to penetrate; the lower end (71) of the latch hook (7) abuts against the edge of the first opening (52) of the pressure piece (5) in the door locking state.
7. The door lock mechanism according to claim 6, wherein: the first elastic piece (61) is a first spring arranged below the pressing block (5), the upper end face of the first spring abuts against the bottom face of the pressing block (5), and the lower end face of the first spring abuts against the shell (3).
8. The door lock mechanism according to claim 1, wherein: the middle part of the lock hook (7) is connected to the shell (3) through a rotating shaft, and the second elastic piece (62) is a torsion spring sleeved on the rotating shaft.
9. The door lock mechanism according to claim 1, wherein: under the unlocking state, the pressing block (5) moves upwards under the action of the first elastic piece (61) and abuts against the locking port (30) of the shell (3) to enable the pressing block (5) to be located at the initial position, the door lock sealing ring (31) is further included, the door lock sealing ring (31) is sleeved on the top of the pressing block (5) and is in sealing connection with the shell (3) under the condition that the pressing block (5) abuts against the locking port (30) of the shell (3).
10. The utility model provides a dishwasher, includes electric appliance body (1) and electric appliance door body (2), electric appliance body (1) has washing chamber (10) and has last opening (11) that are linked together with washing chamber (10), the edge of electric appliance door body (2) is rotated and is connected the edge of opening (11) on electric appliance body, its characterized in that still includes according to any claim of claim 1 ~ 9 door lock mechanism, casing (3) are located on electric appliance body (1) and fore shaft (30) set up, locking lever (4) locate on electric appliance door body (2) and with fore shaft (30) are relative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854936.6A CN112112500B (en) | 2020-08-24 | 2020-08-24 | Door lock mechanism for electric appliance and dish washing machine with door lock mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854936.6A CN112112500B (en) | 2020-08-24 | 2020-08-24 | Door lock mechanism for electric appliance and dish washing machine with door lock mechanism |
Publications (2)
| Publication Number | Publication Date |
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| CN112112500A CN112112500A (en) | 2020-12-22 |
| CN112112500B true CN112112500B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010854936.6A Active CN112112500B (en) | 2020-08-24 | 2020-08-24 | Door lock mechanism for electric appliance and dish washing machine with door lock mechanism |
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| Country | Link |
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| CN (1) | CN112112500B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11236911B2 (en) * | 2018-01-18 | 2022-02-01 | Hti Technology And Industries, Inc. | Push-to-open/signal-to-open appliance door latching system with an integrated locking device |
| US12031361B2 (en) | 2022-06-20 | 2024-07-09 | HTI Technology & Industries, Inc. | Push-to-open/signal-to-open appliance door latching system with an integrated locking device |
| CN115444338B (en) * | 2022-09-13 | 2025-01-28 | 宁波方太厨具有限公司 | Door lock for cleaning machine and cleaning machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332493A (en) * | 2003-05-12 | 2004-11-25 | Techno Excel Co Ltd | Simple and waterproof door latching device for electric appliance box door |
| CN204571614U (en) * | 2015-03-26 | 2015-08-19 | 芜湖美的洗涤电器制造有限公司 | Dish washing machine door latch mechanism and dish-washing machine |
| CN207092776U (en) * | 2017-07-06 | 2018-03-13 | 杭州神林电子有限公司 | A kind of door closure locking system of household electrical appliance |
| CN109209084B (en) * | 2017-07-06 | 2024-01-16 | 杭州神林电子有限公司 | Door closure locking device for household appliances |
| CN207905531U (en) * | 2018-01-31 | 2018-09-25 | 宁波方太厨具有限公司 | A kind of door latch structure of household electrical appliance |
| CN110043146B (en) * | 2019-04-18 | 2024-04-12 | 杭州神林电子有限公司 | Push type door lock |
| CN111119580A (en) * | 2019-12-27 | 2020-05-08 | 杭州神林电子有限公司 | Door lock for household electrical appliance |
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