CN112796569A

CN112796569A - Door lock mechanism of cooking equipment

Info

Publication number: CN112796569A
Application number: CN201911112919.9A
Authority: CN
Inventors: 刘子厚; 付远华
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-05-14

Abstract

The invention relates to a door lock mechanism of cooking equipment, which is provided with a housing, a lock catch assembly, a microswitch, a linkage rod, a limiting rod and a first elastic piece, wherein the housing is provided with a containing cavity and an opening at the front side, the lock catch assembly is arranged at the front side of the containing cavity, a lock hook of the lock catch assembly can deflect relative to the opening at the front side of the housing, so that a door lock tongue on a door body is limited in the opening, the door lock tongue and the elastic piece act on the linkage rod due to the opening and closing of the door body, the linkage rod and the lock hook can synchronously slide back and forth relative to the housing, and the microswitch is in a triggered or non-triggered state, so that the connection of partial electric elements can be realized while the door is opened or closed; the design that the gag lever post slided around in the casing can restrict the deflection of latch hook to guarantee under operating condition that the door body can not open because of the maloperation and cause the accident.

Description

Door lock mechanism of cooking equipment

Technical Field

The invention relates to a door lock mechanism, in particular to a door lock mechanism of cooking equipment.

Background

For cooking equipment, a door body plays a role in opening or closing a cooking cavity, and the opening and closing of the door body can involve whether part of circuit components are operated or not in many times.

For this purpose, some devices use a door lock mechanism linked with a micro switch to solve the technical problem, such as a general oven door interlocking mechanism for microwave ovens disclosed in chinese patent No. ZL 201020545967.5 (publication No. CN 201925981U), the interlocking mechanism includes a switch seat, a door hook and a front plate, a plurality of switches can be placed on the switch seat, an action key for operating the switch is provided corresponding to the position of each switch, the door hook is provided on the oven door of the microwave oven and is combined with or separated from the switch seat along with the opening and closing of the oven door, the door hook has at least one hook part for triggering the switches by touching the action keys, and the front plate is used for fixing the switch seat on the cavity of the microwave oven. This door interlocking structure is comparatively complicated, and on two hook portions that are used for touching micro-gap switch action key all located the door hook, be formed with the notch that supplies the door hook to stretch into on the front bezel, if use small cylindricality like iron wire etc. push down two notches simultaneously, under microwave oven starting state, probably cause the microwave mistake under the state of opening the door to start to bring the potential safety hazard.

Disclosure of Invention

The invention aims to solve the technical problem of providing a door lock mechanism of cooking equipment, which is simple in structure, safe and reliable, aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a door lock mechanism of a cooking apparatus includes

The door lock comprises a shell, a door lock body and a door lock handle, wherein the shell is provided with a containing cavity, the front side of the shell is provided with an opening for a door lock bolt to at least partially extend into, and the containing cavity is communicated with the opening;

the lock catch assembly is arranged on the front side of the accommodating cavity and can restrain the door lock tongue in the opening when the door lock tongue extends into the opening, the lock catch assembly is provided with a lock hook used for locking the door lock tongue, and the lock hook can deflect relative to the opening and can slide back and forth in the accommodating cavity;

the microswitch is arranged in the containing cavity and is provided with an elastic sheet for triggering the contact;

also comprises

The linkage rod at least partially extends into the cavity and can synchronously slide along with the lock hook under the driving of the lock tongue of the door to be far away from the elastic sheet so as to enable the microswitch to be in a non-triggering state;

the limiting rod is arranged in the shell and can slide back and forth relative to the shell to be close to the locking hook so as to limit the locking hook to rotate or be far away from the locking hook to form an avoidance space for deflection of the locking hook; and

the first elastic piece acts on the linkage rod and enables the linkage rod to always have the tendency of contacting with the elastic piece, so that the microswitch is in a trigger state.

In order to ensure that the micro switch can be switched to a corresponding triggering or non-triggering state simultaneously when the door is closed, the linkage rod comprises a rod body and a connecting part arranged on the rod body, the connecting part is arranged on the lock hook, a triggering part used for being in contact with the elastic sheet is arranged on the rod body, and the lock hook and the linkage rod synchronously slide backwards to enable the triggering part to be far away from the elastic sheet in a state that the door lock tongue extends into the opening.

Specifically, the micro-gap switch is arranged on one of two sides of the linkage rod, and the trigger part is a convex column extending from the rod body of the linkage rod towards the same side of the micro-gap switch.

In order to ensure that the linkage rod can move synchronously along with the lock hook under the action of the door lock tongue and cannot interfere with the lock hook, the connecting part is a boss arranged at the front part of the linkage rod, and a limit groove for accommodating the upper part of the lock hook is formed in the lower part of the boss.

In order to realize the forward and backward sliding of the limiting rod, preferably, a driving rod is further arranged in the housing, and a power output end of the driving rod is connected to the limiting rod and can drive the limiting rod to be close to the lock hook or be far away from the lock hook.

In order to conveniently disassemble the shell, the shell comprises a first shell and a second shell which are connected in an inserting and matching mode, the accommodating cavity is formed in the first shell, a first slide way and a second slide way which are arranged side by side are formed in the second shell, the limiting rod is arranged in the first slide way in a sliding mode, and the linkage rod is arranged in the second slide way in a sliding mode.

In order to ensure that the movement speed of the limiting rod is not too high, the rear part of the first slide way is provided with a damping piece for limiting the sliding speed of the limiting rod.

In order to ensure that the linkage rod and the limiting rod cannot deviate when sliding, guide posts convenient to slide are arranged in the first slide way and the second slide way, and correspondingly, guide grooves matched with the corresponding guide posts are formed in the limiting rod and the linkage rod.

In order to realize the recovery after the latch hook deflects, the latch assembly further comprises a second elastic piece, one end of the second elastic piece is connected to the inner wall of the shell, and the other end of the second elastic piece is connected to the latch hook and always has the tendency of preventing the latch hook from deflecting.

In order to realize deflection of the lock hook and hook the door lock tongue after deflection, a groove matched with the door lock tongue is formed in the lock hook, the lock hook can deflect relative to the opening through a rotating shaft arranged in the containing cavity, and a yielding groove matched with the rotating shaft is correspondingly formed in the lock hook.

Compared with the prior art, the invention has the advantages that: in the door lock mechanism of the cooking equipment, a lock hook of a lock catch assembly can deflect relative to a front opening of a shell, a door lock tongue on a door body is limited in the opening, the door lock tongue and an elastic piece act on a linkage rod due to the opening and closing of the door body, so that the linkage rod and the lock hook can synchronously slide forwards and backwards relative to the shell, and a micro switch is further in a triggered or non-triggered state, so that the connection of partial electric elements can be realized while the door is opened or closed; the design that the gag lever post slided around in the casing can restrict the deflection of latch hook to guarantee under operating condition that the door body can not open because of the maloperation and cause the accident.

Drawings

FIG. 1 is a schematic view of the overall structure of a door lock mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of FIG. 1 with a portion of the housing omitted;

FIG. 3 is an exploded view of the door lock mechanism according to an embodiment of the present invention;

FIG. 4 is an exploded view of the overall structure of FIG. 3 from another angle;

FIG. 5 is a schematic structural view of the rear housing with linkage rods and limiting rods omitted;

FIG. 6 is a schematic view of the linkage rod assembled with the housing;

fig. 7 is an assembly view of the limiting rod and the housing.

Detailed Description

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

As shown in fig. 1 to 7, which are preferred embodiments of the present invention, in the present embodiment, a door lock mechanism of a cooking apparatus includes a housing 1, a latch assembly 2, a micro switch 3, a linkage rod 4, a limit rod 5, and a first elastic member 6. The shell 1 is provided with a cavity 1a, an opening 1b is formed in the front side of the shell 1, the cavity 1a is communicated with the opening 1b, a door lock tongue 100 which can at least partially extend into the opening 1b is generally arranged on the door body, and after the door lock tongue 100 extends into the opening 1b, the door lock tongue 100 can be restrained in the opening 1b by the lock catch assembly 2, so that the door body is in a closed state; specifically, the lock catch assembly 2 comprises a lock hook 21 and a second elastic element 22, the lock hook 21 is used for restraining the door lock tongue 100 in the opening, a groove 211 matched with the door lock tongue 100 is formed in the lock hook 21, so that a notch in the door lock tongue 100 can be conveniently clamped with the groove 211, the lock hook 21 can deflect relative to the opening 1b, specifically, the lock hook 21 can deflect relative to the opening 1b through a rotating shaft 1c arranged in the accommodating cavity 1a, and a abdicating groove 1d matched with the rotating shaft 1c is correspondingly formed in the lock hook 21, so that the deflection design of the lock hook 21 can ensure that the notch in the door lock tongue 100 can be conveniently clamped in the groove 211, and the lock hook 21 can be connected with the door lock tongue 100; in order to prevent the two from being separated after being connected, one end of the second elastic member 22 is connected to the inner wall of the housing 1, and the other end is connected to the locking hook 21, and the second elastic member 22 always has a tendency of preventing the locking hook 21 from deflecting, so that the deflected locking hook 21 can be restored to the original position by the existence of the second elastic member 22. The second elastic member 22 in this embodiment is a tension spring.

In this embodiment, the microswitch 3 is arranged in the cavity 1a, the microswitch 3 is provided with an elastic sheet 31 for triggering a contact, the linkage rod 4 and the first elastic piece 6 are matched to enable the microswitch 3 to be in a triggered or non-triggered state while the door body is opened and closed, wherein at least part of the linkage rod 4 extends into the cavity 1a and can synchronously slide along with the lock hook 21 under the driving of the door lock tongue 100 to be far away from the elastic sheet 31 so as to enable the microswitch 3 to be in a non-triggered state; the first elastic element 6 acts on the linkage rod 4 and enables the linkage rod 4 to always have the tendency of contacting with the elastic sheet 31, so that the micro switch 3 is in a triggering state. Specifically, the linkage rod 4 includes a rod body 41 and a connecting portion 42 disposed on the rod body 41, the connecting portion 42 is mounted on the latch hook 21, the connecting portion 42 in this embodiment is a boss disposed at a front portion of the linkage rod 4, a limiting groove 42a for accommodating an upper portion of the latch hook 21 is disposed at a lower portion of the boss, a triggering portion 411 for contacting with the elastic piece 31 is disposed on the rod body 41, the door latch 100 can abut against front portions of the latch hook 21 and the linkage rod 4 in a state where the door latch 100 extends into the opening 1b, the latch hook 21 and the linkage rod 4 synchronously slide backward to enable the triggering portion 411 to be away from the elastic piece 31, the micro switch 3 is disposed on one of two sides of the linkage rod 4, and the triggering portion 411 is a protruding column extending from the rod body 41 of the linkage rod 4 toward the.

In this embodiment, the limiting rod 5 is disposed in the casing 1, and can slide back and forth relative to the casing 1 to be close to the locking hook 21 to limit the locking hook 21 to rotate or to be away from the locking hook 21 to form an avoidance space for deflection of the locking hook 21, and the driving rod 7 is further disposed in the casing 1, a power output end of the driving rod 7 is connected to the limiting rod 5 and can drive the limiting rod 5 to be close to the locking hook 21 or to be away from the locking hook 21, when the driving rod 7 drives the limiting rod 5 to be close to the locking hook 21, a space required for rotation of the locking hook 21 is occupied, therefore, when the door is in a closed state, only the deflection of the locking hook needs to be limited, and the door can be ensured not to be opened due.

The shell 1 comprises a first shell 11 and a second shell 12 which are connected in an inserting and matching mode, a containing cavity 1a is arranged in the first shell 11, a first slide rail 121 and a second slide rail 122 which are arranged side by side are formed in the second shell 12, a limiting rod 5 is arranged in the first slide rail 121 in a sliding mode, a linkage rod 4 is arranged in the second slide rail 122 in a sliding mode, a damping part 8 for limiting the sliding speed of the limiting rod 5 is arranged at the rear portion of the first slide rail 121, guide columns 123 which are convenient to slide are arranged in the first slide rail 121 and the second slide rail 122, and correspondingly, guide grooves 124 matched with the corresponding guide columns 123 are formed in the limiting rod 5 and the linkage rod 4.

The working process of the invention is as follows: when the door body is closed, the door bolt 100 on the door body extends into the opening 1b, the door bolt 100 firstly abuts against the wall surface of the lock hook 21 adjacent to one side of the opening 1b, because the lock hook 21 is connected into the accommodating cavity 1a through the rotating shaft 1c, the lock hook 21 can deflect due to the abutting of the door bolt 100, and the groove 211 on the lock hook 21 is tightly clamped with the notch on the door bolt 100; then the latch hook 21 is restored to the state before deflection under the action of the second elastic element 22, that is, the tension spring, and the door lock tongue 100 continues to extend into the state to abut against the linkage rod 4 and the rear wall surface of the groove 211 of the latch hook 21, so as to drive the linkage rod 4 and the latch hook 21 to synchronously slide backwards, at this time, as the linkage rod 4 moves backwards, the triggering part 411 of the linkage rod 4 is far away from the elastic sheet 31, so that the micro switch 3 is in the triggering state to switch on the circuit where the relevant electric element is located, thereby realizing partial function opening, and then the driving rod 7 drives the limiting rod 5 to be close to the latch hook 21 to limit the deflection of the latch hook 21, so that the door latch bolt 100 has no enough space to be separated from the groove 211, the door body cannot be.

Claims

1. A door lock mechanism of a cooking apparatus includes

The door lock comprises a shell (1) and a door lock body, wherein the shell (1) is provided with a containing cavity (1a), an opening (1b) for a door lock tongue (100) to at least partially extend into is formed in the front side of the shell (1), and the containing cavity (1a) is communicated with the opening (1 b);

the locking buckle assembly (2) is arranged on the front side of the accommodating cavity (1a) and can restrain the door lock bolt (100) in the opening (1b) in the state that the door lock bolt (100) extends into the opening (1b), the locking buckle assembly (2) is provided with a locking hook (21) used for locking the door lock bolt (100), and the locking hook (21) can deflect relative to the opening (1b) and can slide back and forth in the accommodating cavity (1 a);

the microswitch (3) is arranged in the cavity (1a) and is provided with an elastic sheet (31) for triggering a contact;

it is characterized by also comprising

The linkage rod (4) at least partially extends into the cavity (1a) and can synchronously slide along with the lock hook (21) under the drive of the door lock tongue (100) to be far away from the elastic sheet (31) so as to enable the microswitch (3) to be in a non-triggering state;

the limiting rod (5) is arranged in the shell (1) and can slide back and forth relative to the shell (1) to be close to the locking hook (21) to limit the locking hook (21) to rotate or to be far away from the locking hook (21) to form an avoidance space for the locking hook (21) to deflect; and

the first elastic piece (6) acts on the linkage rod (4) and enables the linkage rod (4) to always have the tendency of being in contact with the elastic sheet (31) so that the microswitch (3) is in a trigger state.

2. The door lock mechanism according to claim 1, wherein: the linkage rod (4) comprises a rod body (41) and a connecting portion (42) arranged on the rod body (41), the connecting portion (42) is installed on the lock hook (21), a triggering portion (411) which is used for being in contact with the elastic sheet (31) is arranged on the rod body (41), and under the condition that the door lock tongue (100) stretches into the opening (1b), the lock hook (21) and the linkage rod (4) slide backwards synchronously to enable the triggering portion (411) to be far away from the elastic sheet (31).

3. The door lock mechanism according to claim 2, wherein: micro-gap switch (3) are located one side in the both sides of gangbar (4), trigger portion (411) are from gangbar (4) body of rod (41) towards the projection of micro-gap switch (3) homonymy extension.

4. The door lock mechanism according to claim 3, wherein: the connecting part (42) is a boss arranged at the front part of the linkage rod (4), and the lower part of the boss is provided with a limit groove (42a) for accommodating the upper part of the lock hook (21).

5. The door lock mechanism according to any one of claims 1 to 4, wherein: still set up actuating lever (7) in casing (1), the power take off end of this actuating lever (7) is connected on gag lever post (5) and can drive gag lever post (5) and be close to latch hook (21) or keep away from latch hook (21).

6. The door lock mechanism according to claim 1, wherein: casing (1) is including inserting first casing (11) and second casing (12) of joining in marriage the connection, hold chamber (1a) and locate in first casing (11), seted up first slide (121) and second slide (122) that set up side by side in second casing (12), gag lever post (5) are located in first slide (121) with sliding, gangbar (4) are located in second slide (122) with sliding.

7. The door lock mechanism according to claim 6, wherein: the rear part of the first slide way (121) is provided with a damping piece (8) for limiting the sliding speed of the limiting rod (5).

8. The door lock mechanism according to claim 7, wherein: all be provided with in first slide (121) and the second slide (122) be convenient for gliding guide post (123), correspondingly, gag lever post (5) with all seted up on linkage rod (4) with respectively correspond guide post (123) assorted guide way (124).

9. The door lock mechanism according to claim 1, wherein: the lock catch assembly (2) further comprises a second elastic piece (22), one end of the second elastic piece (22) is connected to the inner wall of the shell (1), and the other end of the second elastic piece (22) is connected to the lock hook (21) and always has the tendency of preventing the lock hook (21) from deflecting.

10. The door lock mechanism according to claim 9, wherein: the lock hook (21) is provided with a groove (211) matched with the door bolt (100), the lock hook (21) can deflect relative to the opening (1b) through a rotating shaft (1c) arranged in the accommodating cavity (1a), and the lock hook (21) is correspondingly provided with a yielding groove (1d) matched with the rotating shaft (1 c).