Microwave oven heating box cover

Abstract

The utility model discloses a microwave oven heating box cover, which belongs to the technical field of microwave oven accessories, and comprises a box cover main body, the upper side wall of the box cover main body is fixedly connected with a clamping and fixing device, and the upper side wall of the box cover main body is provided with two automatic pressure relief devices which are symmetrically arranged. The clamping and fixing device comprises a fixing plate shell fixed to the upper side wall of the box cover body, a rotating cylinder is inserted into and rotationally connected to the upper side wall of the fixing plate shell, a locking mechanism is arranged on the rotating cylinder, and locking grooves which are arranged at equal intervals in a surrounding mode are formed in the inner wall of the upper end of the fixing plate shell with the rotating cylinder as the circle center. According to the heating box, the clamping and fixing device is arranged, the two clamping plates abut against the two sides of the heating box, the attaching firmness of the box cover body and the heating box is further enhanced, the box cover body is prevented from being broken open, the automatic pressure discharging device is arranged to achieve automatic pressure discharging, the box cover body can be prevented from being broken open due to too large air pressure, and use safety is improved; and external dust can be prevented from entering the box cover main body through the exhaust hole.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave oven accessories, and particularly relates to a heating cover for a microwave oven. Background Technique

[0002] Microwave ovens are very commonly used heating devices in our daily life. Microwave ovens can heat food and are widely used. For general microwave ovens, when heating food, if the time is short, the other side is not thoroughly heated; if the time is long, the bottom is already burnt. At this time, the food needs to be covered with a lid to retain moisture, which is equivalent to steaming, so that the heating is more uniform and faster, and it can also well prevent oil splashing. These lids cannot be completely sealed and need a ventilation valve to prevent the heat from the food heated in the container from not being easily dissipated, which may cause the pressure in the container to be too high and lead to an explosion accident.

[0003] In a Chinese patent for a microwave oven heating cover (patent number: CN213872807U), the device includes a cover body with an air outlet at the top and a lid for buckling the air outlet; several support members are provided at the upper end of the cover body, and the lid is within the area surrounded by the several support members. The height of the support members is higher than or equal to the height of the lid; when the microwave oven heating cover is used as the cover body, it is covered on the plane; when the microwave oven heating cover is used as a storage tray, the several support members support the microwave oven heating cover to stand on the plane. The air outlet of the device is provided to prevent safety accidents caused by too high a temperature inside the microwave oven heating cover; the support members are provided to support the microwave oven heating cover to stand on the plane for use as a storage tray, and its height must be greater than or equal to the height of the lid to achieve this effect. However, the device is fixedly connected to the microwave oven heating box by a snap-fit method, and the connection is not firm enough, and it is easy to cause the heating box cover to burst due to too high internal pressure during heating, posing a safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a heating cover for a microwave oven to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A microwave oven heating lid, comprising a lid body, a clamping and fixing device is fixedly connected to the upper side wall of the lid body, and two symmetrically arranged automatic pressure relief devices are provided on the upper side wall of the lid body. The clamping and fixing device includes a fixed plate shell fixed to the upper side wall of the lid body. A rotating cylinder is inserted and rotatably connected to the upper side wall of the fixed plate shell. A locking mechanism is provided on the rotating cylinder. The upper end inner wall of the fixed plate shell is provided with locking grooves arranged at equal intervals around the rotating cylinder as the center. One end of the locking mechanism is inserted into the locking groove. The lower end of the rotating cylinder is fixedly connected with a turntable. Two parallel pull rods are hinged to both sides of the turntable. Two symmetrically arranged sliding plates are slidably connected to the inner wall of the fixed plate shell. Each of the two pull rods is hinged to the inner side surface of a sliding plate. Two L-shaped frames are fixedly connected to the outer side surface of each sliding plate. The two L-shaped frames on the same side penetrate through the fixed plate shell and extend to the lower part of the lid body and are fixedly connected with clamping plates.

[0006] As a further scheme of the present utility model: Among them, the locking mechanism includes a pressing rod inserted into the upper end of the rotating cylinder and slidably connected thereto. The upper end of the pressing rod is fixedly connected with a rotating pressing block. The lower end of the pressing rod is fixedly connected with a sliding block. A tension spring is fixedly connected between the sliding block and the inner top wall of the rotating cylinder. A locking rod is fixedly connected to one side of the sliding block. A sliding opening is provided on one side of the rotating cylinder. One end of the locking rod passes through the sliding opening and is inserted into the locking groove.

[0007] As a further scheme of the present utility model: Among them, the automatic pressure relief device includes a pressure relief sleeve fixed to the upper side wall of the lid body. An exhaust hole communicated with the pressure relief sleeve is provided on the upper side wall of the lid body. A pressing spring is fixedly connected to the inner top wall of the pressure relief sleeve. The lower end of the pressing spring is fixedly connected with a plug head matching the exhaust hole. An exhaust port is communicated with the side wall of the pressure relief sleeve.

[0008] As a further scheme of the present utility model: Among them, the inner wall of the pressure relief sleeve is slidably connected to the outer side wall of the plug head.

[0009] As a further scheme of the present utility model: Among them, the inner wall of the fixed plate shell is rotatably connected to the lower side wall of the turntable through a rotating member.

[0010] As a further scheme of the present utility model: Among them, anti-slip pads are fixedly connected to the opposite side walls of the two clamping plates.

[0011] As a further scheme of the present utility model: Among them, a sealing gasket is fixedly connected to the lower side wall of the lid body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. The microwave oven heating lid, by setting a clamping and fixing device and a locking mechanism, when the lock rod is inserted into the lock groove, the rotation of the rotating cylinder can be restricted, and then the clamping plate can maintain the clamping force. Secondly, when it is necessary to rotate the rotating cylinder, press the rotating pressure block, and the slider fixed to the pressure rod is pushed to move downward in the rotating cylinder. At this time, the tension spring is pulled to generate elastic force, and at the same time, the lock rod fixed to the slider is driven to move downward until the lock rod is separated from the lock groove. At this time, keep pressing the rotating pressure block and rotate the rotating pressure block, then the rotating cylinder can be rotated. The operation is simple. When the rotating pressure block is released, the elastic force of the tension spring is used to drive the lock rod to automatically insert into the lock groove to maintain the lock. After the lid body is tightened with the heating box, press down and rotate the rotating pressure block. At this time, the rotating cylinder can be driven to rotate, and then the turntable can be driven to rotate. At this time, two pull rods can be pulled to swing, driving two sliding plates to move towards each other, and the clamping plate fixed to the L-shaped frame can be pulled to press against both sides of the heating box, further strengthening the firmness of the fit between the lid body and the heating box and preventing it from bursting open.

[0014] 2. The microwave oven heating lid, by setting an automatic pressure relief device, when the lid body is subjected to the steam pressure generated by heating food in the microwave oven, the air pressure can push up the plug head, and the abutting spring is compressed and contracted to generate elastic force. The steam is discharged from the exhaust hole through the exhaust port to achieve automatic pressure relief, which can prevent the lid body from bursting open due to excessive air pressure and improve the safety of use. At the same time, the abutting spring uses its elastic force to make the plug head block the exhaust hole, which can prevent external dust from entering when not in use. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 It is a top view sectional structural schematic diagram of the fixed plate shell of the present utility model;

[0017] Figure 3 It is a front view sectional structural schematic diagram of the rotating cylinder of the present utility model;

[0018] Figure 4 It is a front view sectional structural schematic diagram of the pressure relief sleeve of the present utility model.

[0019] The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0020] 1. Lid body; 2. Fixed plate shell; 3. Rotating cylinder; 4. Lock groove; 5. Turntable; 6. Pull rod; 7. Sliding plate; 8. L-shaped frame; 9. Clamping plate; 10. Pressure rod; 11. Rotating pressure block; 12. Slider; 13. Tension spring; 14. Lock rod; 15. Slide opening; 16. Pressure relief sleeve; 17. Exhaust hole; 18. Abutting spring; 19. Plug head; 20. Exhaust port; 21. Anti-slip pad; 22. Sealing gasket. Detailed Embodiments

[0021] Please refer to Figures 1 to 4 , in this practical embodiment, a microwave oven heating lid includes a lid body 1. A clamping and fixing device is fixedly connected to the upper side wall of the lid body 1. There are two symmetrically arranged automatic pressure relief devices on the upper side wall of the lid body 1. The clamping and fixing device includes a fixed plate shell 2 fixed on the upper side wall of the lid body 1. A rotating cylinder 3 is inserted and rotatably connected to the upper side wall of the fixed plate shell 2. A locking mechanism is provided on the rotating cylinder 3. An equally spaced and circumferentially arranged locking groove 4 is formed in the inner wall of the upper end of the fixed plate shell 2 with the rotating cylinder 3 as the center. One end of the locking mechanism is inserted into the locking groove 4. A turntable 5 is fixedly connected to the lower end of the rotating cylinder 3. Two parallel pull rods 6 are hinged on both sides of the turntable 5. Two symmetrically arranged sliding plates 7 are slidably connected to the inner wall of the fixed plate shell 2. Each of the two pull rods 6 is hinged to the inner side surface of a sliding plate 7. Two L-shaped frames 8 are fixedly connected to the outer side surface of each sliding plate 7. The two L-shaped frames 8 on the same side penetrate through the fixed plate shell 2 and extend to the lower part of the lid body 1 and are fixedly connected to a clamping plate 9. After the lid body 1 and the heating box are tightly closed, press down and rotate the pressing block 11. At this time, the rotating cylinder 3 can be driven to rotate, and then the turntable 5 can be driven to rotate. At this time, the two pull rods 6 can be pulled to swing, driving the two sliding plates 7 to move towards each other, and the clamping plates 9 fixed to the L-shaped frames 8 can be pulled to press against both sides of the heating box, further strengthening the firmness of the fit between the lid body 1 and the heating box and preventing it from popping open.

[0022] As Figure 3 shown: The locking mechanism includes a pressure rod 10 inserted into the upper end of the rotating cylinder 3 and slidably connected to it. A pressing block 11 is fixedly connected to the upper end of the pressure rod 10. A slider 12 is fixedly connected to the lower end of the pressure rod 10. A tension spring 13 is fixedly connected between the slider 12 and the inner top wall of the rotating cylinder 3. A locking rod 14 is fixedly connected to one side of the slider 12. A sliding opening 15 is formed on one side of the rotating cylinder 3. One end of the locking rod 14 passes through the sliding opening 15 and is inserted into the locking groove 4. When the locking rod 14 is inserted into the locking groove 4, the rotation of the rotating cylinder 3 can be restricted, and thus the clamping force of the clamping plate 9 can be maintained. Secondly, if it is necessary to rotate the rotating cylinder 3, press the pressing block 11 to push the slider 12 fixed to the pressure rod 10 to move downward in the rotating cylinder 3. At this time, the tension spring 13 is pulled to generate an elastic force, and at the same time, the locking rod 14 fixed to the slider 12 is driven to move downward until the locking rod 14 is separated from the locking groove 4. At this time, keep pressing the pressing block 11 and rotate the pressing block 11, and the rotating cylinder 3 can be rotated. The operation is simple. When the pressing block 11 is released, the elastic force of the tension spring 13 is used to drive the locking rod 14 to automatically insert into the locking groove 4 to maintain locking.

[0023] As Figure 1 and Figure 4As shown in the figure: The automatic pressure relief device includes a pressure relief sleeve 16 fixed on the upper side wall of the lid body 1. An exhaust hole 17 communicating with the pressure relief sleeve 16 is provided on the upper side wall of the lid body 1. The inner top wall of the pressure relief sleeve 16 is fixedly connected with a pressing spring 18. The lower end of the pressing spring 18 is fixedly connected with a plugging head 19 matching the exhaust hole 17. An exhaust port 20 is communicated with the side wall of the pressure relief sleeve 16. When the lid body 1 is subjected to the steam pressure generated by heating food in the microwave oven, the air pressure can push up the plugging head 19, and the pressing spring 18 is squeezed and contracted to generate elastic force. The steam is discharged from the exhaust hole 17 through the exhaust port 20, realizing automatic pressure relief, which can prevent the lid body 1 from bursting due to excessive air pressure and improve the use safety. At the same time, the pressing spring 18 uses its elastic force to make the plugging head 19 block the exhaust hole 17, which can prevent external dust from entering when not in use.

[0024] As Figure 4 shown in the figure: The inner wall of the pressure relief sleeve 16 is slidably connected with the outer side wall of the plugging head 19, so that the plugging head 19 keeps moving straight up and down.

[0025] As Figure 3 shown in the figure: The inner wall of the fixed plate shell 2 is rotatably connected with the lower side wall of the turntable 5 through a rotating part, making the turntable 5 rotate more stably.

[0026] As Figure 1 shown in the figure: Anti-slip pads 21 are fixedly connected to the opposite side walls of the two clamping plates 9, improving the firmness of the clamping plates 9 against the side wall of the heating box. If there are convex edges on the heating box, the clamping plates 9 can be set as concave blocks matching the convex edges and can be freely designed according to the shape.

[0027] As Figure 1 shown in the figure: A sealing gasket 22 is fixedly connected to the lower side wall of the lid body 1, improving the sealing performance at the connection between the lid body 1 and the heating box.

[0028] Working principle: When using this device during the microwave heating process, when the locking rod 14 is inserted into the locking groove 4, the rotation of the rotating cylinder 3 can be restricted, thereby enabling the clamping plate 9 to maintain a clamping force. Secondly, if it is necessary to rotate the rotating cylinder 3, press the rotating pressing block 11, and push the slider 12 fixed to the pressing rod 10 to move downward in the rotating cylinder 3. At this time, the tension spring 13 is pulled to generate an elastic force. At the same time, the locking rod 14 fixed to the slider 12 is driven to move downward until the locking rod 14 is separated from the locking groove 4. At this time, keep pressing the rotating pressing block 11 and rotate the rotating pressing block 11, then the rotating cylinder 3 can be rotated. The operation is simple. When the rotating pressing block 11 is released, the elastic force of the tension spring 13 is used to drive the locking rod 14 to automatically insert into the locking groove 4 to maintain locking; after the lid body 1 is tightly closed with the heating box, press down and rotate the rotating pressing block 11. At this time, the rotating cylinder 3 can be driven to rotate, and then the turntable 5 can be driven to rotate. At this time, two pull rods 6 can be pulled to swing, driving two sliding plates 7 to move towards each other, and the clamping plate 9 fixed to the L-shaped frame 8 can be pulled to tightly press against both sides of the heating box, further strengthening the firmness of the fit between the lid body 1 and the heating box and preventing it from bursting open;

[0029] Secondly, when the lid body 1 is subjected to the steam pressure generated by the microwave heating of food, the air pressure can push up the plugging head 19, and the abutting spring 18 is compressed and contracted to generate an elastic force. The steam is discharged from the exhaust hole 17 through the exhaust port 20, realizing automatic pressure relief, which can prevent the lid body 1 from bursting open due to excessive air pressure and improve the use safety. At the same time, the abutting spring 18 uses its elastic force to make the plugging head 19 block the exhaust hole 17, which can prevent external dust from entering when not in use.

[0030] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A microwave heating box cover, comprising a box cover main body (1), characterized in that, A clamping and fixing device is fixedly connected to the upper side wall of the box cover main body (1). Two symmetrically arranged automatic pressure relief devices are provided on the upper side wall of the box cover main body (1). The clamping and fixing device includes a fixed plate shell (2) fixed on the upper side wall of the box cover main body (1). A rotating cylinder (3) is inserted and rotatably connected to the upper side wall of the fixed plate shell (2). A locking mechanism is provided on the rotating cylinder (3). The inner wall of the upper end of the fixed plate shell (2) is provided with locking grooves (4) arranged at equal intervals around the rotating cylinder (3) as the center. One end of the locking mechanism is inserted into the locking groove (4). A turntable (5) is fixedly connected to the lower end of the rotating cylinder (3). Two parallel pull rods (6) are hinged to both sides of the turntable (5). Two symmetrically arranged sliding plates (7) are slidably connected to the inner wall of the fixed plate shell (2). Each of the two pull rods (6) is hinged to the inner side surface of one sliding plate (7). Two L-shaped frames (8) are fixedly connected to the outer side surface of each sliding plate (7). The two L-shaped frames (8) on the same side penetrate through the fixed plate shell (2) and extend to the lower part of the box cover main body (1) and are fixedly connected to a clamping plate (9).

2. The microwave heating lid according to claim 1, characterized in that, The locking mechanism includes a pressure rod (10) inserted into the upper end of the rotating cylinder (3) and slidably connected thereto. A rotating pressure block (11) is fixedly connected to the upper end of the pressure rod (10). A slider (12) is fixedly connected to the lower end of the pressure rod (10). A tension spring (13) is fixedly connected between the slider (12) and the inner top wall of the rotating cylinder (3). A locking rod (14) is fixedly connected to one side of the slider (12). A sliding opening (15) is provided on one side of the rotating cylinder (3). One end of the locking rod (14) passes through the sliding opening (15) and is inserted into the locking groove (4).

3. The microwave heating lid according to claim 1, wherein The automatic pressure relief device includes a pressure relief sleeve (16) fixed on the upper side wall of the box cover main body (1). An exhaust hole (17) communicated with the pressure relief sleeve (16) is provided on the upper side wall of the box cover main body (1). A pressing spring (18) is fixedly connected to the inner top wall of the pressure relief sleeve (16). A plugging head (19) matching the exhaust hole (17) is fixedly connected to the lower end of the pressing spring (18). An exhaust port (20) is communicated with the side wall of the pressure relief sleeve (16).

4. The microwave heating box cover according to claim 3, characterized in that, The inner wall of the pressure relief sleeve (16) is slidably connected to the outer side wall of the plugging head (19).

5. A microwave heating lid according to claim 1, characterized in that, The inner wall of the fixed plate shell (2) is rotatably connected to the lower side wall of the turntable (5) through a rotating member.

6. The microwave oven heating lid according to claim 1, characterized in that, Anti-slip pads (21) are fixedly connected to the side walls of the two clamping plates (9) facing each other.

7. A microwave heating box cover according to claim 1, characterized in that, A sealing gasket (22) is fixedly connected to the lower side wall of the box cover main body (1).

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