CN107339022B

CN107339022B - Safety door lock device of household appliance

Info

Publication number: CN107339022B
Application number: CN201710157649.8A
Authority: CN
Inventors: 蒋圣伟; 文广才; 曹骥; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2017-03-16
Filing date: 2017-03-16
Publication date: 2022-11-29
Anticipated expiration: 2037-03-16
Also published as: CN107339022A

Abstract

The utility model provides a domestic appliance's emergency exit lock device, including lock and door hasp, the lock includes the lock mount, the door hook, preceding fixed pin, back fixed pin and elastic component, the door hook rotationally sets up on the lock mount, spacing hole and back spacing groove before opening on the door hook, preceding fixed pin is fixed on the lock mount and is passed preceding spacing hole, and have the free gap between preceding fixed pin and the preceding spacing hole, back fixed pin is fixed on the lock mount and forms sliding fit with back spacing groove, the door hook front end has the hook portion of detaining mutually with the door hasp, the elastic component acts on the door hook rear end and has the trend that prevents the door hasp from breaking away from the door hook, this lock device is still including stretching into in the preceding spacing downthehole with the control valve rod that prevents door hook pivoted. This domestic appliance's emergency exit lock device utilizes the scalability of control valve rod to come the control door hook and can rotate, and the structure is very simple, and can guarantee that electrical apparatus during operation door is in the closed condition always, prevents that the door from being opened in the course of the work, uses safelyr.

Description

Safety door lock device of household appliance

Technical Field

The invention relates to a door lock device, in particular to a safety door lock device of a household appliance.

Background

The door locking device of the existing household appliance can only close the door, and the door of the appliance can be opened in the working process, so that children can touch and open the door body when the appliance works, and potential safety hazards exist. Although there is also a household appliance with a safety door lock device disclosed in the prior art, such as a microwave oven with a child safety door lock disclosed in the chinese patent application with application number 200710058978.3 (publication number CN 101373078A), the microwave oven includes a housing, an oven body, a control door panel, an oven door, and a power distribution chamber installed with various electronic components, a sliding switch is disposed above the oven door near one side of the control panel, and a slot capable of being pushed into the sliding switch is disposed on the control panel opposite to the sliding switch. Although the safety door lock device has a simple structure, manual operation is required when the oven door is locked, the degree of automation is low, the operation is inconvenient, and the reliability is poor. In summary, there is a need for further improvement of the existing safety door lock device for household appliances.

Disclosure of Invention

The invention aims to solve the technical problem of providing a safety door lock device of a household appliance, which has a simple structure and is safe and reliable to use, aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this domestic appliance's emergency exit lock device, including the lock of locating electrical apparatus inner bag top both sides with locate on the door body and be used for with the door hasp that the lock was detained mutually, its characterized in that: the lock include lock mount, door hook, preceding fixed pin, back fixed pin and elastic component, the door hook sets up with rotating on the lock mount, it has preceding spacing hole and back spacing groove to open on the door hook, preceding fixed pin is fixed on the lock mount and is passed preceding spacing hole, and has clearance between preceding fixed pin and the preceding spacing hole, back fixed pin fix on the lock mount and with back spacing groove forms sliding fit, the front end of door hook have with the hook portion that the door hasp was buckled mutually, the elastic component acts on the rear end of door hook and has the trend that prevents the door hasp from breaking away from the door hook, this locks still including can stretch into in the preceding spacing downthehole with the control valve rod that prevents door hook pivoted.

Preferably, a wax motor is arranged at the bottom of the door lock fixing frame, and the driving end of the wax motor is vertically upward and forms the control valve rod. The wax motor realizes the up-and-down extension of the control valve rod through electrical control.

Preferably, the door lock fixing frame is provided with a through hole, and the control valve rod penetrates through the through hole and can extend upwards into the front limiting hole or retract downwards to be separated from the front limiting hole. After the control valve rod stretches into the front limiting hole, the door hook cannot rotate, and after the control valve rod is separated from the front limiting hole, the door hook can rotate.

Preferably, the front limiting hole is a waist-shaped hole, and the through hole is located right below the rear end of the front limiting hole.

In order to enable the rear fixing pin to be smoothly embedded into the rear limiting groove or separated from the rear limiting groove, the rear limiting groove is an arc groove with a backward opening.

The elastic part can have multiple options, preferably, the elastic part be the extension spring, the rear end of extension spring is connected on the lock mount, the front end of extension spring is connected the rear end of door hook.

Compared with the prior art, the invention has the advantages that: this domestic appliance's emergency exit lock device can stretch into in the door hook with stopping door hook pivoted control valve rod through the setting, utilizes control valve rod's scalability to come control door hook and can not rotate, and the structure is very simple, and can guarantee that electrical apparatus during operation door is in the closed condition always, prevents that the door from being opened at the course of the work, especially can prevent that children from going to open the door, has eliminated latent potential safety hazard, uses safelyr, reliable more.

Drawings

FIG. 1 is a schematic view of an installation structure in which an embodiment of the present invention is installed;

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

FIG. 3 is a schematic structural diagram of a door body according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of the present invention;

FIG. 5 is a schematic view of the door lock according to the embodiment of the present invention when locked;

FIG. 6 is a cross-sectional view of the structure of FIG. 5;

FIG. 7 is a schematic view of the door lock according to the embodiment of the present invention when it is opened;

fig. 8 is a sectional view of the structure of fig. 7.

Detailed Description

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

As shown in fig. 1 to 8, the safety door lock device of the household appliance in the embodiment is applied to a micro-electrical steaming and baking product, and includes two door locks 1, two door locks 2 and a wax motor 3, wherein the two door locks 1 are respectively disposed at the left and right sides above an inner container 5 of the electric appliance, the door locks 2 are mounted on a door body 4 and are used for being buckled with the corresponding door locks 1, and the wax motor 3 has one and is disposed at the left or right side above the inner container 5 of the electric appliance.

In this embodiment, the door lock 1 includes a door lock fixing frame 11, a door hook 12, a front fixing pin 13, a rear fixing pin 14, and a tension spring 15. Wherein, the door lock fixing frame 11 is arranged on the inner container 5 of the electric appliance, and the door hook 12 is rotationally arranged on the door lock fixing frame 11. The door hook 12 is provided with a front limiting hole 121 and a rear limiting groove 122, the front fixing pin 13 and the rear fixing pin 14 are vertically arranged cylindrical pins, the front fixing pin 13 is fixed on the door lock fixing frame 11 and penetrates through the front limiting hole 121, a movable gap is formed between the front fixing pin 13 and the front limiting hole 121, and the rear fixing pin 14 is fixed on the door lock fixing frame 11 and forms sliding fit with the rear limiting groove 122. The front end of the door hook 12 is provided with a hook part 123 buckled with the door lock catch 2, the rear end of the tension spring 15 is connected to the door lock fixing frame 11, the front end of the tension spring 15 is connected to the rear end of the door hook 12, and the tension generated by the tension spring 15 on the door hook 12 has the tendency of preventing the door lock catch 2 from being separated from the hook part 123 of the door hook 12. Of course, other elastic members may be used to generate the pulling force of the door hook 12, instead of the tension spring 15.

The wax motor 3 is arranged at the bottom of the door lock fixing frame 11, the driving end of the wax motor 3 is vertically upward and forms a control valve rod 31, and the control valve rod 31 can extend into the front limiting hole 121 to prevent the door hook 12 from rotating. In this embodiment, the front limiting hole 121 is a kidney-shaped hole, a through hole 111 is formed in the door lock fixing frame 11, the through hole 111 is located right below the rear end portion of the front limiting hole 121, and the control valve rod 31 passes through the through hole 111 and can extend into the front limiting hole 121 upwards or retract downwards to be separated from the front limiting hole 121. In addition, in order to smoothly fit the rear fixing pin 14 into the rear stopper groove 122 or to smoothly separate the rear fixing pin from the rear stopper groove 122, the rear stopper groove 122 in this embodiment is an arc groove that opens rearward.

The micro-electric appliance product for steaming and baking of the embodiment is provided with a door lock button (not shown) for controlling the wax motor 3 on a control panel, and the driving end of the wax motor 3, namely the control valve rod 31, can be stretched up and down through electrical control. In the closing process of the door body 4, the door lock catch 2 abuts against the door hook 12 to enable the door hook to rotate slowly, when the door is closed, the door hook 12 hooks the door lock catch 2 to ensure that the door is completely closed, then a door lock key on the touch control panel is pressed or touched, the drive end of the wax motor 3 controls the valve rod 31 to extend to the longest state, the drive end penetrates through the front limiting hole 121, at the moment, the door hook 12 cannot rotate, and therefore the door of an electric appliance can be ensured to be always in a closed state in the working process. After the work is finished, the door lock key on the control panel is pressed down or touched again, the driving end of the wax motor 3, namely the control valve rod 31, is shortened to an initial state, the door hook 12 can rotate when the door is pulled outwards, and the door can be opened smoothly at the moment. In addition, the magnitude of lock 1 locking force can be adjusted through extension spring 15 according to the design demand.

In addition, when the user forgets to press or touch the door lock key after closing the door, prompt information can be added on the control panel through modifying the program to remind the user to press or touch the door lock key.

The above description is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications or improvements may be made to the present invention without departing from the principle of the present invention, for example, the safety door lock device may be applied to other household appliances besides steam-baking micro-electric appliance products, and these are all considered to be within the protection scope of the present invention.

Claims

1. The utility model provides a domestic appliance's emergency exit lock device, including locating lock (1) of electrical apparatus inner bag (5) top both sides and locate on the door body (4) and be used for with door lock catch (2) that the lock was detained mutually, its characterized in that: the door lock device comprises a door lock fixing frame (11), a door hook (12), a front fixing pin (13), a rear fixing pin (14) and an elastic piece, wherein the door hook (12) is rotationally arranged on the door lock fixing frame (11), a front limiting hole (121) and a rear limiting groove (122) are formed in the door hook (12), the front fixing pin (13) is fixed on the door lock fixing frame (11) and penetrates through the front limiting hole (121), a movable gap is formed between the front fixing pin (13) and the front limiting hole (121), the rear fixing pin (14) is fixed on the door lock fixing frame (11) and forms sliding fit with the rear limiting groove (122), the front end of the door hook (12) is provided with a hook part (123) buckled with a door lock catch (2), the elastic piece acts on the rear end of the door hook (12) and has a tendency of preventing the door lock catch (2) from being separated from the door hook (12), the door lock device further comprises a wax which can extend into the front limiting hole (121) to prevent the door hook (12) from rotating, a valve rod (31) is controlled by a motor, and the valve rod (31) is controlled to be in a vertical state, and the wax is arranged at the bottom of the door lock device, the rear fixing pin (14) is arranged in the rear limiting groove (122), and the rear fixing pin (14) is separated from the rear limiting groove (122) in the state that the door lock is opened.

2. The safety door lock device for home appliances according to claim 1, wherein: the door lock fixing frame (11) is provided with a through hole (111), and the control valve rod (31) penetrates through the through hole (111) and can extend upwards into the front limiting hole (121) or retract downwards to be separated from the front limiting hole (121).

3. The safety door lock device for home appliances according to claim 2, wherein: the front limiting hole (121) is a waist-shaped hole, and the through hole (111) is located right below the rear end of the front limiting hole (121).

4. The safety door lock device for home appliances according to any one of claims 1 to 3, wherein: the elastic part be extension spring (15), the rear end of extension spring (15) is connected on lock mount (11), the front end of extension spring (15) is connected the rear end of door hook (12).