CN215951515U - Microwave oven with a heat exchanger - Google Patents

Abstract

The present invention relates to a microwave oven, comprising: the door comprises a box body, a door hook component and a locking mechanism. The locking mechanism is arranged on the box body and comprises a telescopic rod extending towards the door hook part, and the locking mechanism is configured to drive the telescopic rod to extend into or retract out of the opening hole so as to lock or unlock the door body. The microwave oven of the present invention is provided with a locking mechanism, and the telescopic rod of the locking mechanism can extend into the opening of the door hook component by starting the locking mechanism through relevant operation. Due to the blocking of the telescopic rod, the door body cannot be opened through external force, and therefore the locking of the door body is achieved. During the period, the child cannot open the door body without unlocking, so that the mistaken opening during the closing of the door body is effectively prevented.

Description

Microwave oven with a heat exchanger

Technical Field

The utility model relates to the technical field of cooking utensils, in particular to a microwave oven.

Background

The microwave oven with the manual door opening function in the prior art is usually provided with the door opening key, a user can open the microwave oven by pressing the door opening key or forcibly pulling the door body, and the door opening mode is simple and convenient. However, such a door opening method makes children easily open the microwave oven door body by mistake without adult supervision, so that there is a risk of being scalded by food with high internal temperature.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a microwave oven provided with a locking mechanism that is actuated by a related operation such that a telescopic rod is inserted into an opening of a door hook member. Due to the blocking of the telescopic rod, the door body cannot be opened through external force, and therefore the locking of the door body is achieved. During the period, the child cannot open the door body without unlocking, so that the mistaken opening during the closing of the door body is effectively prevented.

A microwave oven according to an embodiment of the present invention includes: a cabinet having a cooking chamber formed therein; the door body is pivotally arranged on one side of the box body and is used for opening and closing the box body; a door hook member disposed on a rear surface of the door body and configured to be releasably attached to the cabinet, the door hook member having an opening; and the locking mechanism is arranged on the box body and comprises a telescopic rod extending towards the door hook part, and the locking mechanism is configured to drive the telescopic rod to extend into or retract out of the opening hole so as to lock or unlock the door body.

Optionally, the pivot axis of the door body is a vertical axis, and the door hook member includes: the vertical beam is arranged on the back of the door body along the vertical direction; and at least one door hook arranged on the vertical beam along the vertical direction, wherein the opening is arranged on the at least one door hook.

Optionally, the door hook is a sheet-shaped door hook, and the extension direction of the telescopic rod is perpendicular to the plane of the door hook.

Optionally, each door hook comprises: the extension part extends from the vertical beam to the rear side of the door body; and a boss portion provided on a distal end portion of the extension portion, the boss portion being provided to protrude downward, wherein the opening is provided on the boss portion.

Alternatively, the door hook member includes at least two door hooks, and the opening is provided on the projection of the uppermost door hook.

Alternatively, the door hook member is provided adjacent to an edge of the side where the door body is pivotally opened.

Optionally, the case comprises: and a control panel arranged adjacent to the edge of the side where the door body can be pivoted and opened, wherein the locking mechanism is arranged on the back of the control panel.

Optionally, the locking mechanism further comprises: the side surface of the shell facing the door hook component is provided with a through hole allowing the telescopic rod to extend out; and the driving device is arranged in the shell, is connected with the telescopic rod and is configured to drive the telescopic rod to move in two directions along the linear direction of the telescopic rod.

Optionally, the locking mechanism further comprises: and the control key is connected with the driving device and is configured to control the driving device to drive the telescopic rod to stretch and retract.

Optionally, the control keys are disposed on the control panel.

Optionally, the box further comprises: and an interlocking mechanism arranged to be positioned at a rear side of the door hook member when the door body is closed, arranged to face the door hook member, and configured to be releasably connected with the door hook member.

Optionally, the interlock mechanism comprises: the door hook locking device comprises a support, a locking mechanism and a locking mechanism, wherein at least one ramp extending upwards in an inclined mode is formed on the support, and each ramp is used for guiding a door hook at a corresponding position to enter the interlocking mechanism and clamping the door hook; and at least one rotating lever, set up on the support, the upper surface of each rotating lever abuts against the lobe of the door hook of the correspondent position when the door body is closed, dispose to rotate and push the door hook upwards controllably, so that the ramp releases the door hook.

Optionally, the interlock mechanism further comprises: and at least one limit switch, wherein each limit switch is arranged on the bracket, is arranged to be directly contacted with or indirectly contacted with the bulge part of the door hook via the rotating lever when the door body is closed, and is configured to generate a trigger signal in response to the contact.

Optionally, the front surface of the door body is further provided with a handle.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

Fig. 1 is a schematic view illustrating an overall structure of a microwave oven according to an exemplary embodiment of the present invention;

fig. 2 is a schematic structural view illustrating a rear side of a door body and a control panel of a microwave oven according to an exemplary embodiment of the present invention;

FIG. 3 illustrates a schematic view of the connection relationship between the door hook component, the locking mechanism and the interlocking mechanism according to an exemplary embodiment of the present invention;

FIG. 4 illustrates a schematic view of the connection between a door hook component and a locking mechanism according to an exemplary embodiment of the present invention;

FIG. 5 shows a schematic view of a door hook component according to an exemplary embodiment of the present invention;

FIG. 6 shows a schematic view of a locking mechanism according to an exemplary embodiment of the present invention;

fig. 7 is a schematic view illustrating a connection relationship between a door hook member and an interlocking mechanism according to an exemplary embodiment of the present invention.

Description of reference numerals:

a microwave oven 1;

a case 100;

a connection hole 101;

a front wall 110;

a control panel 111;

a top wall 120;

a second side wall 130;

an interlock mechanism 140;

a bracket 141;

a ramp 142;

a rotation lever 143;

a limit switch 144;

a door body 200;

a handle 210;

a door hook member 300;

a vertical beam 310;

a door hook 320;

an extension 321;

a boss portion 322;

an opening 323;

a locking mechanism 400;

a telescoping rod 410;

a housing 420;

control buttons 430.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Fig. 1 shows a schematic view of a microwave oven 1 according to an exemplary embodiment of the present invention; fig. 2 is a schematic structural view illustrating a rear side of a door body and a control panel of a microwave oven 1 according to an exemplary embodiment of the present invention. As shown in fig. 1 and 2, the microwave oven 1 includes: a cabinet 100, a door 200, a door hook member 300, and a locking mechanism 400. The cabinet 100 may have a rectangular parallelepiped shape, which specifically includes a front wall 110, a rear wall, a first side wall, a second side wall 130, a top wall 120, and a bottom wall (the rear wall, the first side wall, and the bottom wall are not shown due to shielding), the inside of the cabinet 100 forming a cooking chamber. The door 200 is pivotably provided at one side of the cabinet 100 to open and close the cabinet 100. Specifically, as shown in fig. 1, door 200 is provided on the front side of cabinet 100, and front wall 110 has an opening for attaching door 200. In some embodiments, the pivot axis of the door body 200 may be disposed on the end surface of the first side wall, and the pivot axis of the door body 200 is a vertical axis, that is, a side of the door body 200 close to the first side wall is a side to be pivoted, and a side of the door body 200 close to the second side wall 130 is a side to be pivoted open. Examples of pivot axes include, but are not limited to, hinges, and like pivoting devices. End surfaces of the top wall 120, the bottom wall, and the first side wall of the cabinet 100 facing the door body 200 and a portion of the front wall 110 may form a door frame, which is closely attached to the door body 200 in a state where the door body 200 is closed. The size of the door frame can be matched with that of the door body 200. Although the pivot axis of the door body 200 is illustrated as a vertical axis in the present embodiment, the pivot axis of the door body 200 may be a horizontal axis in other embodiments. For example, the pivot shaft of the door body 200 may be provided on the end surface of the bottom wall, that is, the door body 200 may be opened from above. In addition, the door 200 may further include a handle 210 for facilitating opening of the door 200.

The front wall 110 also includes a control panel 111 except for the opening and door frame portion, and the control panel 111 abuts against one edge of the door body 200 that can be pivoted open. That is, one side edge of the control panel 111 contacts an edge of the door 200 in a state where the door 200 is closed, and the control panel 111 may be flush with the door 200 in a state where the door 200 is closed. A display screen and a plurality of keys may be provided on the control panel 111. The display screen may be, for example, an LED display screen for displaying parameters such as the operating state and the operating time of the microwave oven 1. A plurality of keys may be used to set the operating state and the operating time of the microwave oven 1. In some embodiments, the interior of the cabinet 100 may also include an electrical control chamber in addition to the cooking chamber. Specifically, a cooking chamber is defined by the door body 200, the first side wall, and portions of the top wall 120, the bottom wall, and the rear wall corresponding to the door body 200; an electrical control chamber is defined by the control panel 111, the second side wall 130, and portions of the top wall 120, the bottom wall, and the rear wall corresponding to the control panel 111. In other words, the space behind the door 200 is a cooking chamber, and the space behind the control panel 111 is an electric control chamber. The electrically controlled chamber may be used for housing the circuit board and part of the electrical components of the microwave oven 1. In some embodiments, the cabinet 100 may further include a partition wall for separating the cooking chamber and the electric control chamber. In some embodiments, an electrical control box for closing the electrical control chamber may be separately provided.

Fig. 3 is a schematic view illustrating a connection relationship between the door hook member 300, the locking mechanism 400 and the interlocking mechanism 140 according to an exemplary embodiment of the present invention; FIG. 4 illustrates a schematic view of the connection between the door hook member 300 and the locking mechanism 400 according to an exemplary embodiment of the present invention; FIG. 5 shows a schematic view of a door hook component 300 according to an exemplary embodiment of the present invention; FIG. 6 shows a schematic view of a locking mechanism 400 according to an exemplary embodiment of the present invention; fig. 7 is a schematic view illustrating a connection relationship between the door hook member 300 and the interlocking mechanism 140 according to an exemplary embodiment of the present invention. As shown in fig. 3 to 5, the door hook member 300 is disposed at a rear surface of the door body 200, configured to be releasably coupled to the cabinet 100, and the door hook member 300 is provided with an opening 323. Specifically, as shown in fig. 5, the door hook member 300 includes: a mullion 310 and at least one door hook 320. The vertical beam 310 is disposed at the rear surface of the door body 200 in a vertical direction, and in some embodiments, the vertical beam 310 may be disposed at the rear surface of the door body 200 by means of screw fixation. In other embodiments, the vertical beam 310 may be slidably disposed on the back surface of the door body 200 through a vertical rail preset on the back surface of the door body 200. To facilitate the opening and closing of the door body 200, the door hook member 300 is disposed adjacent to an edge of the side where the door body 200 can be pivotally opened. That is, the pivot axes of the door hook member 300 and the door body 200 are located at the edges of the left and right sides of the door body 200, respectively. The door hook member 300 may be a plate-shaped member as a whole, i.e., the vertical beam 310 and the door hook 320 are both of a plate-shaped structure and are located in the same plane. The plane of the door hook member 300 may also be perpendicular to the plane of the door body 200, so that when the door body 200 is closed, the door hook member 300 may partially enter the interior of the cabinet 100 at the rear side of the door body 200, thereby engaging the door hook member 300 with a portion of the cabinet 100. In some embodiments, the mullion 310 and door hook 320 may be integrally formed.

At least one door hook 320 is arranged on the vertical beam 310 in a vertical direction, and each door hook 320 protrudes substantially toward the rear side of the door body 200. In the present embodiment, as shown in fig. 5, the door hook part 300 includes a first door hook 320 located at an upper portion of the vertical beam 310 and a second door hook 320 located at a lower portion of the vertical beam 310. The first door hook 320 and the second door hook 320 may have the same size and shape. As shown in fig. 1, a coupling hole 101 is further provided at a position corresponding to the door hook 320 on the door frame of the case 100. For example, in the case that the door hook part 300 has two door hooks 320, the door frame of the case 100 has two coupling holes 101, respectively. The coupling hole 101 allows the door hook 320 to protrude when the door body 200 is closed and allows the door hook 320 to be coupled to the cabinet 100. Although two door hooks 320 are illustrated in the present embodiment, it is understood that in other embodiments, the door hook member 300 may have more than two door hooks 320, and correspondingly, the door frame of the case 100 has more than two coupling holes 101, respectively.

In this embodiment, the opening 323 is formed in at least one door hook 320. The opening 323 is used in cooperation with a locking mechanism 400, which will be described in detail later, to lock or unlock the door body 200. The opening 323 is arranged on the door hook 320, the door hook structure of the microwave oven 1 can be fully utilized to set the locking system, and the opening 323 is prevented from being independently arranged at other positions of the door body 200, so that the structure of the microwave oven 1 is simplified, and the integral attractiveness of the microwave oven 1 is ensured. In addition, although the door hook member 300 is vertically disposed in the present embodiment, in other embodiments, particularly in the case where the pivot axis of the door body 200 is a horizontal axis, the door hook member 300 may also be horizontally disposed. In this case, the door hook member 300 may include: a cross member and a plurality of door hooks 320 arranged on the cross member, and the door hook member 300 may be disposed adjacent to an upper edge of the door body 200.

The locking mechanism 400 is provided on the cabinet 100, the locking mechanism 400 includes a telescopic rod 410 extending toward the door hook member 300, and the locking mechanism 400 is configured to drive the telescopic rod 410 to extend into or retract out of the opening 323 to lock or unlock the door body 200. Specifically, as shown in fig. 6, the locking mechanism 400 may include a telescoping rod 410, a housing 420, and a drive device. As shown in fig. 2, the locking mechanism 400 may be disposed on the back side of the control panel 111, or more specifically, inside the electrical control chamber. As described above, the control panel 111 and the door body 200 are flush, and thus, disposing the locking mechanism 400 at the rear surface of the control panel 111 facilitates aligning the telescopic rod 410 of the locking mechanism 400 with the opening 323 of the door hook member 300. The housing 420 of the locking mechanism 400 may be bolted, snapped, welded, or otherwise attached to the back of the control panel 111. In this embodiment, the locking mechanism 400 may be fixedly disposed on the upper half of the control panel 111 to avoid the plurality of keys on the lower half of the control panel 111. The housing 420 of the locking mechanism 400 may have a rectangular parallelepiped shape, a through hole allowing the extension bar 410 to extend is opened on a side of the housing 420 facing the door hook member 300, and a length of the housing 420 (i.e., a dimension of the housing 420 in a direction of the extension bar 410) may be slightly greater than a length of the extension bar 410 so as to be able to completely accommodate the extension bar 410. In order to allow the extension rod 410 to accurately extend into the opening 323 of the first door hook 320 in the extended state, the through hole should be disposed at the same height as the opening 323 on the housing 420, and the vertical distance from the through hole to the control panel 111 is the same as the vertical distance from the opening 323 to the door body 200.

The driving device is disposed inside the housing 420, connected to the telescopic rod 410, and configured to drive the telescopic rod 410 to move in both directions along a linear direction thereof. In this embodiment, the driving device may be a stepping motor, and an output end of the stepping motor is connected to the telescopic rod 410 to drive the telescopic rod 410 to move. In other embodiments, the drive means may also be an electromagnetic drive means. For example, the extension bar 410 may be fixedly disposed on an iron block inside the housing 420, and the electromagnetic driving device includes an electromagnet and an elastic member that can drive the extension bar 410 in opposite directions, respectively. The electromagnet may drive the iron block to move in a first direction (i.e., a direction in which the telescopic rod 410 is extended outward from the housing 420) after being energized, and the elastic member may be connected to the iron block and may provide a restoring force in a second direction (i.e., a direction in which the telescopic rod 410 is retracted) thereto after the iron block moves in the first direction. After the electromagnetic driving device is turned on, the electromagnet is powered on and attracts the iron block and makes the telescopic rod 410 extend out of the housing 420 along the first direction, and after the electromagnetic driving device is turned off, the electromagnet is powered off, and the elastic member makes the telescopic rod 410 retract into the housing 420. Of course, it is understood that there are other driving devices that can drive the telescopic rod 410 to move in two directions, and the principles of these devices are well known to those skilled in the art and will not be described herein.

In the present embodiment, the extension bar 410 is horizontally extended, that is, the extension bar 410 moves along a horizontal direction, and the extending direction (or moving direction) is perpendicular to the plane of the sheet-shaped door hook member 300. This vertical arrangement allows the extension pole 410 to more securely lock the door hook member 300.

Although the locking mechanism 400 is disposed on the upper half of the control panel 111 and the telescopic rod 410 of the locking mechanism 400 is engaged with the first door hook 320 in the present embodiment, in other embodiments, the locking mechanism 400 may be disposed on the lower half of the control panel 111 and the telescopic rod 410 of the locking mechanism 400 is engaged with the second door hook 320. In this case, the opening 323 is provided on the second door hook 320, and the position of the through-hole of the case 420 should correspond to the position of the opening 323 on the second door hook 320.

It should be noted that, in the case where the door hook member 300 mentioned above is horizontally disposed, the locking mechanism 400 may be disposed at a position of the control panel 111 near the upper edge, so that the locking mechanism 400 and the horizontally disposed door hook member 300 are aligned. In this case, the plurality of door hooks 320 may also be a sheet-shaped structure, each sheet-shaped door hook 320 is vertically disposed and the plane of each door hook 320 is perpendicular to the cross beam. The extension bar 410 of the locking mechanism 400 may still be horizontally extended and enter the opening 323 of the door hook 320 in a direction perpendicular to the door hook 320. In this case, however, the opening 323 is provided at the door hook 320 closest to the locking mechanism 400, or the openings 323 may be provided at a plurality of door hooks 320, so that the extension pole 410 passes through a plurality of door hooks 320 at the same time.

The microwave oven 1 of the present embodiment operates in a specific principle in which the door hook member 300 is coupled to the cabinet 100 after the user closes the door body 200. At this time, the opening 323 of the door hook member 300 is aligned with the line on which the extension bar 410 of the locking mechanism 400 is located. The user activates the locking mechanism 400 by a related operation (e.g., via a switch button, etc.) such that the extension pole 410 extends from the housing 420 and further into the opening 323 of the door hook member 300. At this time, the door 200 cannot be opened by an external force due to the blocking of the expansion link 410, thereby achieving the locking of the door 200. During this period, the child cannot open the door 200 without unlocking, and thus erroneous opening during the closing of the door 200 is effectively prevented. When the user needs to open the door 200, the user first needs to activate the locking mechanism 400 again by related operations (e.g., by a switch button, etc.), so that the retractable rod 410 is retracted from the opening 323. At this time, the blocking of the expansion link 410 is removed, and the door body 200 can be freely opened. The microwave oven 1 of the embodiment can lock the door body 200 when the door body 200 is closed by arranging the locking mechanism 400, so that the difficulty of opening the door body 200 is increased, and the possibility that children open the door body 200 by themselves is reduced.

The above-described lock mechanism 400 further includes: control buttons 430. The control button 430 is connected to the driving device for controlling the driving device to drive the telescopic rod 410 to extend and retract. The control key 430 may be disposed on the housing 420, for example, on a side of the housing 420 facing the control panel 111. As described above, the locking mechanism 400 may be disposed at the rear of the control panel 111, and thus, the control button 430 may be disposed at the front side surface of the control panel 111 through the control panel 111. The control button 430 is disposed on the surface of the control panel 111 to facilitate the user to unlock the door body 200. Therefore, when a user needs to lock the door body 200, the user only needs to press the control key 430 on the control panel 111, other operations are not needed, and the operation process is simple and convenient. Although the locking mechanism 400 is used to lock or unlock the door 200 in the present embodiment in the form of the control button 430, it is understood that in other embodiments, the locking mechanism 400 may be controlled in other feasible manners. For example, the microwave oven 1 may be separately provided with a remote control device, and after the door 200 is closed, a user may remotely control the locking mechanism 400 to lock or unlock the door 200 using the remote control device.

Specifically, the control button 430 may control the telescopic rod 410 to move between a first preset position where the telescopic rod 410 is completely retracted into the housing 420 and a second preset position where the telescopic rod 410 is extended into the opening 323 of the door hook 320. When the door 200 of the microwave oven 1 is opened, the extension rod 410 is located at a first preset position. After the user closes the door body 200, the user can press the control button 430, and at this time, the driving device drives the telescopic rod 410 to move to the second preset position, so that the door body 200 is locked. When the user wishes to open the door 200 again, the user can press the control button 430 again, and at this time, the driving device drives the telescopic rod 410 to return to the first preset position from the second preset position, so that the door 200 is unlocked.

The specific structure of the door hook 320 is described in detail below with reference to fig. 5. As shown in fig. 5, each door hook 320 includes an extension 321 and a boss 322. The extension 321 extends from the vertical beam 310 toward the rear side of the door body 200. The extension 321 includes a first section extending substantially horizontally toward the rear side of the door body 200 and a second section extending slightly upward from the first section. A boss 322 is provided on a distal end portion of the extension 321, and the boss 322 is provided to protrude downward. As shown in fig. 5, a boss 322 is provided at the end of the second section, and the outer contour of the boss 322 includes an upper edge and a lower edge, with the lower edge thereof projecting downward. The extension 321 and the boss 322 are formed together in a hook shape. The lower edge of the boss 322 and the lower edge of the second section form a notch for hooking the structure of the box 100. In the present embodiment, the opening 323 is provided on the protrusion 322 having a relatively large area, so as to avoid the opening 323 being provided on the extension 321 having a narrow width, which may cause the door hook 320 to become fragile and easy to break.

In addition, after the door 200 is closed, the door hook 320 is hooked to the corresponding structure of the cabinet 100, and when the door 200 is opened, the protrusion 322 of the door hook 320 needs to be moved upward to release the connection between the door hook 320 and the cabinet 100. Therefore, it can be understood that the arrangement of the opening 323 on the protruding portion 322 can also effectively prevent the tendency of the protruding portion 322 of the door hook 320 to move upward when the door body 200 is opened. Therefore, when the locking mechanism 400 locks the door body 200, the door hook member 300 cannot be disengaged from the cabinet 100 at all, and thus the door body 200 cannot be pivoted at all, which further enhances the locking effect.

The pod 100 may further include an interlock mechanism 140. The specific structure of the interlocking mechanism 140 cooperating with the door hook member 300 will be described in detail below with reference to fig. 7. The interlock mechanism 140 is disposed facing the door hook member 300 and is configured to releasably connect with the door hook member 300. As shown in fig. 1 and 2, the interlock mechanism 140 may be provided at a rear side of the door hook member 300 when the door body 200 is closed, to engage with the door hook member 300 when the door body 200 is closed. Specifically, the interlocking mechanism 140 may be disposed behind the front wall 110 of the casing 100 constituting the door frame, or the front surface of the interlocking mechanism 140 facing the door hook member 300 may itself constitute the door frame portion. The entirety of the interlock mechanism 140 may be fixedly attached to a wall of the housing 100 (e.g., may be secured to a dividing wall that divides the cooking chamber and the electrical control chamber) so that the interlock mechanism 140 remains stationary relative to the rest of the housing 100. After the door body 200 is closed, the door hook member 300 is hooked to the interlocking mechanism 140, so that the door body 200 is kept closed with respect to the cabinet 100.

The interlock mechanism 140 includes: a bracket 141 and at least one swivel lever 143. At least one ramp 142 extending obliquely upward is formed on the bracket 141, and each ramp 142 is used for guiding and clamping the door hook 320 at a corresponding position. As shown in fig. 7, the bracket 141 may be vertically disposed, and the bracket 141 and the door hook member 300 are disposed in the same vertical plane, so as to ensure that the door hook member 300 and the interlocking mechanism 140 are butted when the door body 200 is closed. In this embodiment, the front end surface of the bracket 141 is disposed to be attached to the rear surface of the door frame, and two passages allowing the first door hook 320 and the second door hook 320 to extend into may be disposed on the bracket 141, and the inlets of the passages are aligned with the corresponding connection holes 101 on the door frame. The ramp 142 may be disposed within the channel and an upper surface of the ramp 142 may form a lower surface of the channel. The ramp 142 may be a straight ramp 142 or a curved ramp 142. Ramp 142 can guide door hook 320 into interlock mechanism 140 as door hook 320 enters and snap door hook 320 as door hook 320 moves into place. Specifically, during the passage of the door hook 320 through the passage, the projection 322 of the door hook 320 first abuts against the ramp 142 and gradually rises as it enters. During this process, the door hook 320 is elastically deformed to some extent. After the door hook 320 has fully entered the channel and moved into position, the boss 322 reaches the end of the ramp 142 and exits the ramp 142. Under the elastic force, the door hook 320 is restored to the original shape, and the projection 322 is finally located behind the ramp 142. At this time, the ramp 142 is engaged with the notch formed by the lower edge of the protrusion 322 and the lower edge of the second section, the door 200 is in a closed state, and the door 200 cannot be opened without pulling the door 200 by a sufficient external force. When it is desired to open the door body 200, the user needs to pull the door body 200 outward hard and overcome the elasticity of the door hook 320, forcing the protrusion 322 abutting against the rear end of the ramp 142 to rise to the upper surface of the ramp 142 and then exit the channel via the ramp 142. Therefore, it can be understood that a greater force is required to open the door body 200 than when closing the door body 200.

At least one rotation lever 143 is provided on the bracket 141, an upper surface of each rotation lever 143 abutting a boss 322 of the door hook 320 at a corresponding position, configured to controllably rotate and push the door hook 320 upward, so that the ramp 142 releases the door hook 320. For example, as shown in fig. 7, a rotating lever 143 is provided below and behind the ramp 142 corresponding to the second door hook 320, and the rotating lever 143 abuts against the protrusion 322 of the second door hook 320 after the second door hook 320 enters the interlocking mechanism 140. In this embodiment, in addition to opening the door 200 by pulling the door 200 outward by force, the user may operate the microwave oven 1 to automatically open the door 200. Specifically, the interlocking mechanism 140 may further include an actuating mechanism (not shown in the drawings) that is connected to the rotating lever 143 and drives the rotating lever 143 to rotate. A door opening button may be provided at the bottom of the control panel 111 of the cabinet 100 of the microwave oven 1, and when a user operates the button, a corresponding actuating mechanism drives the rotating lever 143 to rotate about its rotating point, and causes the protrusion 322 of the second door hook 320 to be lifted up to the upper surface of the ramp 142 and finally to leave the passage via the ramp 142, thereby achieving the automatic opening of the door body 200. Although the rotation lever 143 is provided only at the position of the second door hook 320 in the present embodiment, in other embodiments, the rotation lever 143 may be provided at the position of the first door hook 320, or one rotation lever 143 may be provided at each of the two door hooks 320.

In addition, the bracket 141 may be further provided with a plurality of limit switches 144, and the limit switches 144 may be electrically connected with the controller of the microwave oven 1. The limit switch 144 is used for receiving the stress of the door hook 320 and generating a corresponding trigger signal to indicate that the door body 200 is closed. As shown in fig. 7, three limit switches 144 may be provided, wherein the first limit switch 144 is disposed behind the ramp 142 corresponding to the first door hook 320 such that the projection 322 thereof contacts the first limit switch 144 after the first door hook 320 hooks the ramp 142. The second limit switch 144 and the third limit switch 144 are respectively disposed at positions close to both ends of the rotation lever 143, and after the second door hook 320 is hooked on the ramp 142, the protrusion 322 thereof contacts the rotation lever 143 first, and the rotation lever 143 may further transmit stress generated by the contact to the second limit switch 144 and the third limit switch 144. In some embodiments, the three limit switches 144 may work simultaneously, and after the three limit switches 144 all generate the trigger signal, it may be determined that the door body 200 is closed; or the triggering signal can be generated according to one of the three limit switches 144 to determine that the door body 200 is closed.

Specifically, after the door body 200 is closed, the protruding portion 322 of the first door hook 320 or the second door hook 320 may abut against the limit switch 144, the limit switch 144 is triggered, so that a trigger signal for closing the door body 200 is sent to the controller, and the controller determines that the door body 200 is closed after receiving the trigger signal. The controller may be electrically connected to the locking mechanism 400, and controls the locking mechanism 400 to lock the door 200 based on a door closing trigger signal. Specifically, when the door 200 is closed, the controller directly controls the locking mechanism 400 to lock the door 200 after receiving the trigger signal, so as to prevent a child from opening the door 200 by mistake. In addition, the controller may disable the control button 430 of the locking mechanism 400 when the door 200 is opened. For example, in the case that the controller does not receive a trigger signal for closing the door, the control circuit of the driving device controlled by the control button 430 may be temporarily turned off, and at this time, even if the user presses the control button 430 through the control panel 111, the telescopic rod 410 may not extend out of the housing 420, so that the telescopic rod 410 may be prevented from accidentally extending out to interfere with the door hook 320 during the opening of the door 200, thereby preventing the door 200 from being normally closed.

It will be understood that in this specification, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicate an orientation or positional relationship or dimension based on that shown in the drawings, and that such terms are used for convenience of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting to the scope of this application.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

This description provides many different embodiments or examples that can be used to implement the present application. It should be understood that these various embodiments or examples are purely exemplary and are not intended to limit the scope of protection of the present application in any way. Those skilled in the art can conceive of various changes or substitutions based on the disclosure of the specification of the present application, which are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope defined by the appended claims.

Claims (14)

1. A microwave oven, comprising:

a cabinet having a cooking chamber formed therein;

the door body is pivotally arranged on one side of the box body and is used for opening and closing the box body;

the door hook component is arranged on the back of the door body and is configured to be connected to the box body in a releasable mode, and an opening is formed in the door hook component; and

the locking mechanism is arranged on the box body and comprises a telescopic rod extending towards the door hook part, and the locking mechanism is configured to drive the telescopic rod to extend into or retract out of the opening hole so as to lock or unlock the door body.

2. The microwave oven as claimed in claim 1, wherein the pivot axis of the door body is a vertical axis, and the door hook part includes:

the vertical beam is arranged on the back of the door body along the vertical direction; and

at least one door hook arranged on the vertical beam along the vertical direction, wherein

The opening is disposed on the at least one door hook.

3. The microwave oven according to claim 2,

the door hook is a sheet-shaped door hook, and

the extension direction of the telescopic rod is perpendicular to the plane where the door hook is located.

4. The microwave oven as claimed in claim 3, wherein each of the door hooks includes:

the extending part extends from the vertical beam to the rear side of the door body; and

a boss provided on a distal end portion of the extension portion, the boss protruding downward, wherein

The opening is arranged on the boss.

5. The microwave oven as claimed in claim 4, wherein the door hook part includes at least two door hooks, and the opening is provided on a projection of the uppermost door hook.

6. The microwave oven according to any one of claims 1 to 5,

the door hook member is disposed adjacent to an edge of a side where the door body can be pivotally opened.

7. The microwave oven as claimed in any one of claims 1 to 5, wherein the cabinet comprises:

a control panel disposed adjacent to an edge of a side where the door body is pivotally openable, wherein,

the locking mechanism is arranged on the back of the control panel.

8. The microwave oven of claim 7, wherein the locking mechanism further comprises:

the side surface of the shell facing the door hook component is provided with a through hole allowing the telescopic rod to extend out; and

and the driving device is arranged in the shell, is connected with the telescopic rod and is configured to drive the telescopic rod to move in two directions along the linear direction of the telescopic rod.

9. The microwave oven of claim 8, wherein the locking mechanism further comprises:

and the control key is connected with the driving device and is configured to control the driving device to drive the telescopic rod to stretch and retract.

10. The microwave oven according to claim 9,

the control key is arranged on the control panel.

11. The microwave oven as claimed in claim 4 or 5, wherein the cabinet further comprises:

and the interlocking mechanism is arranged on the rear side of the door hook part when the door body is closed, is arranged to face the door hook part and is configured to be connected with the door hook part in a releasable mode.

12. The microwave oven as claimed in claim 11, wherein the interlocking mechanism comprises:

the support is provided with at least one ramp extending obliquely upwards, and each ramp is used for guiding the door hook at the corresponding position to enter the interlocking mechanism and clamping the door hook; and

the upper surface of each rotating lever abuts against the bulge part of the door hook at the corresponding position when the door body is closed, and the rotating levers are configured to controllably rotate and push the door hook upwards so that the ramp releases the door hook.

13. The microwave oven of claim 12, wherein the interlocking mechanism further comprises:

the limit switches are arranged on the bracket, are directly contacted or indirectly contacted with the convex part of the door hook through the rotating lever when the door body is closed, and are configured to generate a trigger signal in response to the contact.

14. The microwave oven according to any one of claims 1 to 5,

the front surface of the door body is also provided with a handle.

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