CN217001301U

CN217001301U - Door lock mechanism for electric appliance and household electric appliance

Info

Publication number: CN217001301U
Application number: CN202220258770.6U
Authority: CN
Inventors: 何小磊
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-07-19
Anticipated expiration: 2032-01-29

Abstract

The utility model relates to a door lock mechanism for an electric appliance and a household electric appliance, wherein the door lock mechanism for the electric appliance comprises a shell, a door lock body and a door lock body, wherein the shell is fixedly arranged on a box body of the electric appliance and is provided with a lock opening; a latch hook disposed on the housing; the first end of the lock rod is used for being fixedly connected with a door body of an electric appliance, the second end of the lock rod can move along the arrangement direction of the shell and the lock rod, the lock opening is positioned on the moving path of the lock rod, and in the door locking state, the second end of the lock rod penetrates through the lock opening and then is in a locking state with the lock hook; the magnetic piece is used for being arranged on one of the shell and the door body; the electromagnet is used for being installed on the other one of the shell and the door body, arranged corresponding to the magnetic piece and magnetically attracted with the magnetic piece in the electrified state, so that the second end of the lock rod is driven to move towards the inside of the lock opening. When the door is locked, a user does not need to push the door body until the lock rod is pushed into the lock opening, time and labor are saved, convenience is brought to the user, and the practicability is high.

Description

Door lock mechanism for electric appliance and household electric appliance

Technical Field

The utility model belongs to the field of household appliances, and particularly relates to a door lock mechanism for an appliance and the household appliance.

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.

For example, the chinese invention patent application of the present applicant, which was previously filed, "a door lock mechanism and a cleaning machine for an electrical appliance", has a patent application No. CN202010854936.6 (application publication No. CN112112500A), which discloses a door lock mechanism for an electrical appliance, comprising a housing having a lock opening on a top wall; lock rod with C-shaped hook part; the pressing block can be arranged below the locking notch in a vertically moving manner; a first elastic member acting on the press block; the locking hook can be rotatably connected in the shell, the opening direction of the locking hook is opposite to that of the hook part, the lower end of the locking hook is restrained below the top of the pressing block, the upper end of the locking hook is located beside the pressing block in an unlocking state, and a limiting structure is arranged on the peripheral wall of the locking hook; a second elastic member acting on the latch hook; and the elastic sheet is matched with the limiting structure. The door lock mechanism has low requirement on electric control logic and high reliability, but needs to push the door body by a user to insert the lock rod into the lock opening of the shell, which brings inconvenience to the user.

Accordingly, there is a need for further improvements to existing door lock mechanisms.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a door lock mechanism for an electrical appliance, which automatically inserts a lock rod into a lock opening when locking a door, in view of the current state of the prior art.

The second technical problem to be solved by the utility model is to provide a household appliance which is time-saving and labor-saving when a door is locked.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a door latch mechanism for an appliance comprising:

the shell is used for being fixedly arranged on a box body of the electric appliance and is provided with a locking notch;

a latch hook disposed on the housing;

the first end of the lock rod is fixedly connected with a door body of an electric appliance, the second end of the lock rod can move along the arrangement direction of the shell and the lock rod, the lock opening is positioned on the moving path of the lock rod, and in the door locking state, the second end of the lock rod penetrates through the lock opening and then is in a locking state with the lock hook;

it is characterized by also comprising:

the magnetic piece is used for being arranged on one of the shell and the door body;

the electromagnet is used for being installed on the other one of the shell and the door body, arranged corresponding to the magnetic piece and magnetically attracted with the magnetic piece in the electrified state, so that the second end of the lock rod is driven to move towards the inside of the lock opening. And then the second end of the lock rod passes through the lock opening and then is in a locking state with the lock hook, and finally the subsequent door locking state is completed.

The magnetic member may be disposed on the door body or on the housing, but preferably, the magnetic member is configured to be disposed on the door body and disposed adjacent to the lock lever, and the electromagnet is configured to be disposed on the housing and disposed adjacent to the lock notch.

In order to improve the magnetic attraction force and ensure that the lock rod is reliably inserted into the lock opening, the number of the magnetic parts is two, and the lock rod is positioned between the two magnetic parts.

In order to protect the electromagnet and the lock hook, a containing cavity is formed in the shell, and the electromagnet and the lock hook are located in the containing cavity.

The latch hook can adopt pivoted form, also can adopt immobilized form, if have the form of socket, but preferably, the position that the latch hook is close to the centre sets up with rotating on the casing, the casing is provided with on the position that corresponds the locking lever and can follows the moving direction motion of locking lever just acts on the moving part of the first end of latch hook, under the lock door state, the locking lever promotes the moving part removes then and drives towards the direction of keeping away from the locking lever the second end court of latch hook the locking lever direction rotate to with the locking lever is in locking state.

In order to realize that the moving part automatically restores to the initial position, the automatic locking device also comprises a first elastic element which acts on the moving part and enables the moving part to always have the movement trend towards the direction of the locking rod.

The second end of the lock rod has various forms, which can be a form of opening a socket or a form of providing a C-shaped hook, but preferably, the second end of the lock rod has a C-shaped hook, the latch hook has an open C-shaped structure, the opening direction of the latch hook is opposite to the opening direction of the hook, and the second end of the latch hook is buckled on the hook in the door locking state.

In order to lock the door, the lock hook and the hook part are kept in a buckling state, a limiting structure is arranged on the peripheral wall of the lock hook, the shell is provided with an elastic sheet and a second elastic piece acting on the lock hook to enable the second end of the lock hook to deflect towards the lock rod all the time, one end of the elastic sheet is movably connected to the shell, the other end of the elastic sheet is provided with a clamping part towards one side of the lock hook, the clamping part is matched with the limiting structure to limit the lock hook to rotate in the door locking state, and the electromagnet is in a power-off state and the moving part moves towards the lock rod direction under the action of the first elastic piece to enable the second end of the lock hook to be separated from the hook part of the lock rod.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: a household appliance with the door lock mechanism is characterized in that: including the open box of front side and set up in the open department of front side and open or close the open door body of this front side, the locking lever sets up on the position at the adjacent top of the door body and extend along the fore-and-aft direction, the casing sets up on the box, and correspond the locking lever is arranged, and the antetheca panel of this casing has seted up the fore-stock.

The household appliance can adopt a cleaning machine, an oven, a steam box, a steaming and baking all-in-one machine or a steaming and baking all-in-one machine and the like, but preferably, the household appliance is a cleaning machine.

Compared with the prior art, the utility model has the advantages that: this lock mechanism relies on the second end that electro-magnet and magnetic part's magnetic attraction drove the locking lever to remove in the fore shaft, makes the second end of locking lever insert to the fore shaft then in, need not the user and promote the door body until pushing away the locking lever to the fore shaft in promptly when locking the door, labour saving and time saving has brought the convenience for the user, and the practicality is strong.

Drawings

FIG. 1 is a sectional view of the present embodiment in a door-locked state;

FIG. 2 is a cross-sectional view of another angle of the present embodiment;

fig. 3 is a sectional view of the door lock mechanism in the present embodiment;

fig. 4 is a sectional view of a portion of the structure of fig. 3 in the unlocked state.

Detailed Description

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

As shown in fig. 1 and 2, the electric appliance of the present embodiment is a washing machine for washing fruits, vegetables or dishes. The cleaning machine comprises a box body 1, a door body 2 and a door lock mechanism. The cabinet 1 has a front opening, and the door 2 is provided at the front opening of the cabinet 1 to open or close the front opening.

As shown in fig. 3 and 4, the door lock mechanism includes a housing 3, a latch hook 7, a lock lever 4, a magnetic member 21, an electromagnet 31, a magnetic switch 9, and a first elastic member.

As shown in fig. 1, the housing 3 is fixedly mounted on the top wall of the box 1, and has a cavity 30 therein, and a front wall of the housing 3 is provided with a locking notch 300 communicated with the cavity 30. The lock rod 4 is arranged along the front-back direction, the front end of the lock rod 4 is fixedly connected with the position of the rear wall surface of the door body 2, which is adjacent to the top, and the rear end of the lock rod 4 can move along the front-back direction along with the door body 2, namely along the arrangement direction of the shell 3 and the lock rod 4. The rear end of the lock lever 4 of the present embodiment has a C-shaped hook portion 41. The above-mentioned locking notch 300 is located on the moving path of the locking lever 4.

As shown in fig. 1 and 2, two magnetic members 21 are disposed on the rear wall surface of the door body 2 adjacent to the top, and the lock lever 4 is disposed between the two magnetic members 21. Each magnetic member 21 has an electromagnet 31 corresponding thereto, and the electromagnet 31 is disposed opposite to the electromagnet 31, the electromagnet 31 is disposed in the cavity 30 of the housing 3 and is disposed adjacent to the locking notch 300, and the locking notch 300 is located between the two electromagnets 31. The electromagnet 31 in the energized state magnetically attracts the corresponding magnetic member 21, thereby moving the rear end of the lock lever 4 toward the lock opening 300. The magnetic member in this embodiment is a magnet.

As shown in fig. 1 and 3, the latch hook 7 is disposed in the receiving cavity 30 of the housing 3, and is rotatably disposed on the housing 3 at a position adjacent to the middle by a rotation shaft, and is arranged in the front-rear direction. The locking hook 7 is 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 41, and in the door-locking state, the hook 41 of the locking lever 4 passes through the locking opening 300 and is buckled with the second end (i.e., the front end 72) of the locking hook 7. In order to realize the rotation of the locking hook 7, the housing 3 is provided with a movable member 5 which can move back and forth and acts on the first end of the locking hook 7 at a position corresponding to the locking lever 4, specifically, the movable member 5 is a C-shaped structure with a first opening 52, the first opening 52 of the movable member 5 is arranged towards the first end (i.e. the rear end 71) of the locking hook 7, in the unlocking state, the movable member 5 is located beside the first end of the locking hook 7, and the first end of the locking hook 7 is located on the right side of the locking lever 4; in the door locking state, the lock bar 4 pushes the movable member 5 to move in a direction away from the lock bar 4 (backward) to push the first end of the lock hook 7 to make the first end of the lock hook 7 abut against the edge of the first opening 52 of the movable member 5, and then drives the second end of the lock hook 7 to rotate in a direction (clockwise) toward the lock bar 4 to be buckled on the hook portion 41 of the lock bar 4. In this embodiment, a magnetic switch 9 for forcibly detecting the position of the latch hook 7 is disposed in the accommodating cavity of the housing.

As shown in fig. 3, the first elastic element acts on the movable element 5, so that the movable element 5 always has a tendency to move toward the lock lever 4 (forward). The first elastic member of the present embodiment is a spring 61 disposed behind the movable member 5, and a front end surface of the spring abuts against a rear wall surface of the movable member 5, and a rear end surface abuts against a rear wall surface of the housing 3, so that the movable member 5 always has a tendency to move forward.

As shown in fig. 3, the housing 3 is provided with a spring 8 and a second elastic member, the second elastic member is a torsion spring 62 sleeved on the rotating shaft, so that when the moving member 5 moves forward, the locking hook 7 rotates clockwise under the action of the torsion spring 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 engaged state to lock the door, a limiting structure is disposed on the peripheral wall of the latch hook 7, one end of the elastic piece 8 is rotatably connected to the housing 3, and the other end of the elastic piece has a locking portion 81 toward one side of the latch hook 7. As shown in fig. 4, in the unlocking state, and the electromagnet 31 is in the power-off state, the movable element 5 moves forward to the initial position under the action of the corresponding spring 61, the locking hook 7 rotates under the action of the torsion spring 62 to disengage the locking hook 7 from the hook portion 41 of the locking rod 4, and the locking rod 4 passes forward through the locking notch 300 to realize unlocking.

The limit structure of the embodiment is basically the same as the limit structure, unlocking and door locking principles in the Chinese invention patent application No. CN202010854936.6 previously applied by the applicant, namely, a door lock mechanism for an electric appliance and a dish washer with the door lock mechanism, and has the difference that when a door is closed, a lock rod of the door body is inserted into a lock opening through the magnetic attraction effect of an electromagnet and a magnetic element, and after a moving member 5 moves to an extreme limit position, the pressing force applied to the door body is released through the power failure of the electromagnet; when opening the door, at first rely on the magnetic attraction effect of electro-magnet and magnetic part to make the locking lever continue backward movement, when treating the moving part backward and moving to extreme position, the electro-magnet is in the outage state, when needing the locking lever to move backward promptly, the electro-magnet is in the on-state, and when needing the locking lever to move forward, the electro-magnet is in the outage state. In addition, the "upper and lower" directions in the previous application are respectively equivalent to the "front and rear" directions in the present embodiment, and detailed description thereof will be omitted in the present embodiment. The orientation of this embodiment is specifically seen in the direction of the arrow in fig. 3. In the description and claims of the present embodiment, directional terms such as "front", "rear", "left", "right", "side" and the like are used, but these directional terms merely indicate relative positional relationships and are not limited to absolute directions. In fact, the structure of the present application is equally applicable to dishwashers having a top door body and other appliances, and the directional terms herein should be understood as being adaptable.

Claims

1. A door latch mechanism for an appliance comprising:

the shell (3) is fixedly arranged on the box body (1) of the electric appliance and is provided with a locking notch (300);

a latch hook (7) disposed on the housing (3);

the first end of the lock rod (4) is fixedly connected with a door body (2) of an electric appliance, the second end of the lock rod can move along the arrangement direction of the shell (3) and the lock rod (4), the lock notch (300) is positioned on the moving path of the lock rod (4), and in the door locking state, the second end of the lock rod (4) penetrates through the lock notch (300) and then is in a locking state with the lock hook (7);

it is characterized by also comprising:

the magnetic piece (21) is used for being arranged on one of the shell (3) and the door body (2);

the electromagnet (31) is used for being installed on the other one of the shell (3) and the door body (2), is arranged corresponding to the magnetic piece (21), and is attracted magnetically by the magnetic piece (21) in the electrified state, so that the second end of the lock rod (4) is driven to move towards the inside of the lock opening (300).

2. The door lock mechanism according to claim 1, wherein: the magnetic part (21) is arranged on the door body (2) and is adjacent to the lock rod (4), and the electromagnet (31) is arranged on the shell (3) and is adjacent to the lock opening (300).

3. The door lock mechanism according to claim 2, wherein: the number of the magnetic parts (21) is two, and the lock rod (4) is positioned between the two magnetic parts (21).

4. The door lock mechanism according to claim 3, wherein: the shell (3) is internally provided with a containing cavity (30), and the electromagnet (31) and the lock hook (7) are both positioned in the containing cavity.

5. The door lock mechanism according to any one of claims 1 to 4, wherein: the position that latch hook (7) is close to the centre sets up with rotating on casing (3), casing (3) are provided with on the position that corresponds locking lever (4) can along the direction of movement motion of locking lever (4) just acts on moving part (5) of the first end of latch hook (7), under the lock door state, locking lever (4) promote moving part (5) remove then drive towards the direction of keeping away from locking lever (4) the second end court of latch hook (7) locking lever (4) direction rotate extremely with locking lever (4) are in the lock state.

6. The door lock mechanism according to claim 5, wherein: the locking device also comprises a first elastic element which acts on the moving element (5) and enables the moving element (5) to always have a movement trend towards the direction of the locking rod (4).

7. The door lock mechanism according to claim 5, wherein: the second end of the lock rod (4) is provided with a C-shaped hook part (41), the lock hook (7) is of a C-shaped structure with an opening, the opening direction of the lock hook (7) is opposite to the opening direction of the hook part (41), and the second end of the lock hook (7) is buckled on the hook part (41) in a door locking state.

8. The door lock mechanism according to claim 7, wherein: the peripheral wall of the lock hook (7) is provided with a limiting structure, the shell (3) is provided with an elastic sheet (8) and a second elastic piece acting on the lock hook (7) to enable the second end of the lock hook (7) to always deflect towards the lock rod (4), one end of the elastic sheet (8) is movably connected on the shell (3), one side of the other end, which faces the lock hook (7), is provided with a clamping part (81), under the door locking state, the clamping part (81) is matched with the limiting structure to limit the locking hook (7) to rotate, and the clamping part (81) in the door locking state is further buckled on the hook part (41) along with the second end of the locking hook (7) to be separated from the limiting structure, in the unlocking state, the electromagnet (31) is in the power-off state, the movable piece (5) moves towards the direction of the lock rod (4) under the action of the first elastic piece, and then the second end of the lock hook (7) is separated from the hook portion (41) of the lock rod (4).

9. A household appliance having the door lock mechanism of any one of claims 1 to 8, characterized in that: including the open box of front side (1) and set up in the open department of front side and open or close this open door body of front side (2), locking lever (4) set up on the position of the adjacent top of the door body (2) and extend along the fore-and-aft direction, casing (3) set up on box (1), and correspond locking lever (4) are arranged, and the antetheca of this casing (3) has seted up fore-stock (300).

10. The household appliance according to claim 9, wherein: the household appliance is a cleaning machine.