TW202307324A - Airtight device - Google Patents

Abstract

An airtight device includes a container and an airtight cover located on the container, and the airtight cover includes a fixing bracket, a door, and a pressuring handle. The fixing bracket has at least one through hole and at least one guiding slot, in which the through hole is communicated with internal space of the container. The guiding slot has adjacent first and second top surfaces, and the second top surface is higher than the first top surface. The door selectively covers the through hole. The pressuring handle is pivoted on the door and has a first section, a second section, and a rotating axis which is between the first and second sections, and the first section and the second section rotate with respect to each other. The second section is configured to receive a force to drive the first section to move from below the second top surface to below the first top surface, such that the rotating axis pressures the door.

Description

airtight device

The invention relates to an airtight device, in particular to an airtight device for storing objects.

With the advancement and popularization of science and technology, preservation devices (such as refrigerators, freezers or freezers) are widely used to preserve food and medicine.

In the process of storing food and medicine, the door body of the storage device will have gaps due to not closing tightly enough, which will have a negative impact on the preservation effect, and the shelf life of food and medicine will also be affected. Therefore, food and medicine may be spoiled or expired and cannot be eaten or taken, which leads to serious waste.

Therefore, how to provide an airtight device that can close the door tightly so as to avoid air leakage and improve the preservation effect has become one of the important issues.

To solve the above problems, the present invention provides an airtight device, which includes a container and an airtight cover. The airtight cover is arranged on the container, wherein the airtight cover includes a fixed frame, at least one door body and a pressure handle. The fixed frame has at least one through hole and at least one guide groove, wherein the through hole communicates with the inner space of the container, and the guide groove has adjacent first top surface and second top surface, wherein the second top surface is higher than the first top surface . The door body selectively covers the through hole. The pressure handle is pivotally connected to the door body. The pressure handle includes a first section, a second section and a rotation axis. The rotation axis is located between the first section and the second section, and the first section and the second section are opposite to each other. Rotate with each other, and wherein the second section is configured to receive force to drive the first section to move from under the second top surface to under the first top surface, so that the rotation axis presses on the door body.

In some embodiments of the present invention, the fixed frame further includes a sliding track, the door body has a protrusion inserted into the sliding track, the sliding track is higher than the through hole and the height of the first part of the sliding track relative to the through hole gradually increases, and wherein The door body is used to face or stay away from the lowest end of the first part, so that the door body is at a closed height or an open height.

In some embodiments of the present invention, the height of the second part of the sliding track relative to the through hole is constant, and the second part communicates with the higher end of the first part.

In some embodiments of the present invention, the door body has a bearing, and the bearing is arranged on the raised portion.

In some embodiments of the present invention, the airtight cover includes a connecting rod, the airtight cover includes a plurality of pressurizing handles, and the second sections of the plurality of pressurizing handles are rotatably connected to the connecting rod.

In some embodiments of the present invention, the airtight cover includes a fixed lock, at least a part of the fixed lock is disposed on a side of the door body, and the fixed lock is configured to move vertically to fix the door body to the fixed frame.

In some embodiments of the present invention, at least one door body includes two door bodies, the door body includes slide rails and sliders, and one of the two door bodies is used to move above the other of the two door bodies, so that one of the two door bodies The slider of the one is slidably connected to the slide rail of the other of the two doors.

Another aspect of the present invention is to provide an airtight device. The airtight device includes a container and an airtight cover. The airtight cover is arranged on the container, wherein the airtight cover includes a fixed frame, two doors and a plurality of pressure handles. The fixed frame has two through holes and a plurality of guide slots, the two through holes communicate with the inner space of the container, wherein each guide slot has adjacent first top surface and second top surface, wherein the second top surface is higher than the first top surface. a top surface. The binary body selectively covers the two through holes respectively. A plurality of pressure handles are pivotally connected to the two door bodies, wherein each pressure handle includes a first section, a second section and a rotation axis, the rotation axis is located between the first section and the second section, and the first section and the second section The second section is configured to rotate relative to each other, and wherein the second section is configured to receive force to drive the first section to move from under the second bottom surface to under the first top surface, so that the rotation axis presses the door body.

In some embodiments of the present invention, the fixed frame further includes a sliding track, each door body has a protrusion inserted into the sliding track, the sliding track is higher than the through hole and the height of the two first parts of the sliding track is gradually increased relative to the through hole , and wherein the door body is used to face or move away from the lowest end of the first part, so that the door body is at the closed height or the opened height.

In some embodiments of the present invention, the height of the second part of the sliding track relative to the through hole is constant, and the second part communicates with the higher ends of the two first parts and is located between the two first parts.

In some embodiments of the present invention, each door body has a protrusion and a bearing, the protrusion is inserted into the sliding track, and the bearing is disposed on the protrusion.

In some embodiments of the present invention, the airtight cover includes a fixing rod connected to the fixing frame, and the fixing rod is arranged between the two through holes, wherein the fixing rod has a T-shaped cross-section and is used to fix the two doors from the side and above. .

In some embodiments of the present invention, the airtight cover includes a fixed lock, at least a part of the fixed lock is disposed on a side of the door body, and the fixed lock is configured to move vertically to fix the door body to the fixed frame.

In some embodiments of the present invention, the two doors include slide rails and sliders, and one of the two doors is used to move above the other of the two doors, so that the slider of one of the two doors can slide A slide rail that connects the other of the two door bodies.

In summary, the present invention provides an airtight device, which has a container and an airtight cover, the airtight cover covers the container and can prevent gas or liquid from moving into or out of the container, so the items stored in the container (such as food) Or medicines) can be isolated from the outside world, thereby avoiding air leakage and causing the stored items to be corrupted and inedible or ingestible. In addition, the airtight cover of the present invention is provided with a pressurized handle, and the user can simply turn the pressurized handle to make the airtight cover in an airtight state or release the airtight state.

The above description is only used to illustrate the problem to be solved by the present invention, the technical means for solving the problem, and the effects thereof, etc. The specific details of the present invention will be described in detail in the following implementation methods and related drawings.

Several embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some commonly used structures and elements will be shown in a simple and schematic manner in the drawings.

Please refer to FIG. 1 , which is a schematic diagram of the airtight device 10 . In some embodiments of the present invention, the airtight device 10 may be a freezer, a freezer or a refrigerator, wherein the airtight device 10 includes a container 100 and an airtight cover 200, and the airtight cover 200 is tightly arranged on the opening 110 of the container 100 , and can completely cover the opening 110 and seal the container 100 , thereby preventing gas and liquid from entering and leaving the container 100 . Specifically, the container 100 may be a square or rectangular cabinet, and the container 100 may contain various types of objects (for example, food or medicine). In addition, the airtight cover 200 includes a fixed frame 210 , two doors 230 and a plurality of pressure handles 250 , wherein the user can rotate the pressure handles 250 and apply pressure to the door 230 so that the airtight cover 200 is in an airtight state. Then, the user can further reversely rotate the pressure handle 250 and release the pressure on the door body 230 , so that the airtight cover 200 releases the airtight state. The detailed structure and related content of the airtight cover 200 will be introduced in the next paragraphs. In some embodiments of the present invention, the airtight cover 200 only includes the single door body 230, and the user can press the single door body 230 against the fixed frame 210 and use the pressure handle 250 to pressurize the single door body 230, so that The airtight cover 200 is in an airtight state.

Please refer to FIGS. 1 to 3 , and FIG. 2 shows an exploded view of the airtight cover 200 . FIG. 3 shows a partial enlarged view of the fixing frame 210 according to the dotted line box S1 in FIG. 2 . In some embodiments of the present invention, the fixing frame 210 has two through holes 211 and a plurality of guide grooves 213, wherein the through holes 211 communicate with the inner space of the container 100, so the user can take out through the through holes 211 of the airtight cover 200 The object accommodated in the container 100 or the object placed in the container 100 . In addition, the user can selectively move the door body 230 and make the door body 230 cover the through hole 211 or away from the through hole 211, and the pressure handle 250 can be pivotally connected to the frame of the door body 230, wherein the pressure handle 250 includes a second A section 251 , a second section 253 and a rotation axis 255 , the rotation axis 255 is located between the first section 251 and the second section 253 , and the first section 251 and the second section 253 rotate relative to each other. In addition, the guide slot 213 has adjacent first top surface 213a and second top surface 213b, wherein the second top surface 213b is higher than the first top surface 213a, and the first top surface 213a and the second top surface 213b can be Connected planes, slopes or curved surfaces, and the angle between the first top surface 213a and the second top surface 213b is less than 90 degrees. In actual application, the first section 251 of the pressure handle 250 can be pushed and inserted into the guide groove 213. When the first section 251 moves from the second top surface 213b to the first top surface 213a, the first section 251 Push against the first top surface 213a and generate a reaction force to drive the rotation axis 255 to pressurize the door body 230, so that the airtight cover 200 is in an airtight state (please refer to Figure 5 and Figure 7, Figure 7 Shown as an enlarged view of the dotted box S3 in Fig. 5). Then, when the first section 251 is away from the first top surface 213a (for example, when the pressure handle 250 is pushed and the first section 251 moves to the second top surface 213b along the first top surface 213a), the first top surface The above-mentioned reaction force produced by the surface 213a on the first section 251 will disappear, and then the rotation axis 255 will release the pressure on the door body 230 and cause the airtight cover 200 to release the airtight state (please refer to Figure 6 and Figure 8 together, Fig. 8 is an enlarged view of the dotted box S4 in Fig. 6).

Specifically, the fixing frame 210 may be made of metal material, alloy material or rigid polymer material, such as steel, aluminum metal, aluminum alloy or plastic. In addition, the guiding groove 213 on the fixing frame 210 may be manufactured by a cutting process or laser cutting, and the present invention is not limited thereto. The shape of the door body 230 is then corresponding to the shape of the through hole 211 of the fixed frame 210, wherein the door body 230 can be square or rectangular, and the through hole 211 can also be square or rectangular, and the door body 230 is slightly larger than the through hole 211, so When the door body 230 covers the through hole 211 , the door body 230 will completely cover the through hole 211 viewed from above. In addition, the door body 230 has an outer frame and a transparent sheet, wherein the outer frame surrounds the transparent sheet, so that the user can directly view the inner space of the container 100 through the door body 230 . In addition, the outer frame may include metal, alloy or macromolecule (for example, steel, aluminum metal, aluminum alloy or more rigid plastic), while the transparent sheet may include transparent glass or transparent macromolecular material, and the present invention is not intended as such limit.

In some embodiments of the present invention, the fixed frame 210 further includes two side walls 214 and two sliding tracks 215, the two side walls 214 are respectively arranged on the corresponding two sides of the through hole 211 and extend from the upper surface of the fixed frame 210, and the guide groove 213 The sliding track 215 is at least disposed on one side of the side wall 214 facing the through hole 211 , and the door body 230 is disposed between the two side walls 214 and slidably connected between the two sliding tracks 215 . In other embodiments of the present invention, the guiding groove 213 and the sliding track 215 may also extend from the front surface of the side wall 214 facing the through hole 211 to the rear surface of the side wall 214, so that the first section 251 is inserted into the guiding groove 213. The pressure handle 250 can rotate smoothly under force, but the present invention is not limited thereto.

Please also refer to Figure 4. FIG. 4 shows a partially enlarged view of the door body 230 according to the dotted line box S2 in FIG. 2 . In some embodiments of the present invention, the door body 230 has a protruding portion 231 , and the protruding portion 231 is inserted into the sliding track 215 so as to facilitate the movement of the door body 230 relative to the sliding track 215 . In addition, the door body 230 further includes a bearing 233 (bearing), and the bearing 233 is disposed on the protruding portion 231 and configured to roll in the sliding track 215 . In actual application, the protruding portion 231 and the bearing 233 help the door body 230 to move close to the fixed frame 210 .

In some embodiments of the present invention, the door body 230 further includes a handle 234, wherein the handle 234 and the protrusion 231 are arranged on opposite sides of the door body 230, and the user can operate the handle 234 to lift or move the door body 230, wherein when the user moves the door body 230 or rotates the door body 230 relative to the protruding part 231, the sliding track 215 supports the protruding part 231 at the same time, so that the protruding part 231 serves as the supporting point of the door body 230, so the user The door body 230 can be moved or turned effortlessly.

Specifically, the sliding track 215 is substantially inverted U-shaped, and the sliding track 215 is higher than the upper surface of the fixed frame 210 and the through hole 211, wherein the two first parts 215a of the sliding track 215 are relatively higher than the upper surface of the fixed frame 210 and the through hole 211. The height of the hole 211 gradually increases toward the center of the sliding rail 215 , so the first portion 215 a is higher than the fixing frame 210 and extends obliquely to the upper surface of the fixing frame 210 . In addition, the height of the second part 215b of the sliding track 215 relative to the through hole 211 is constant, wherein the second part 215b communicates with the higher ends of the two first parts 215a and is located between the two first parts 215a, so the first part 215a is relatively The heights of the upper surface of the fixing frame 210 and the through hole 211 gradually increase toward the second portion 215b. In addition, the door body 230 can move obliquely (including horizontal movement and vertical movement) along the first part 215a of the sliding track 215, and the door body 230 can also move horizontally along the second part 215b of the sliding track 215, wherein the door body 230 also It can be pushed to move between the first part 215a and the second part 215b.

In actual application, the door body 230 faces or moves away from the lowest end of the first part 215a, so that the airtight cover 200 is in a closed state or an open state, and the door body 230 can move toward and cover or move away from the through hole 211 along the first part 215a. through hole 211 . Please refer to FIG. 5 or FIG. 6 at the same time, the door body 230 is located at the lowest end of the first part 215a, and the door body 230 is at the closing height at this time, so that the airtight cover 200 is in a closed state. Please refer to FIG. 9, the door body 230 can move away from the through hole 211 along the first part 215a and expose the through hole 211, the door body 230 is located at the highest end of the first part 215a or the second part 215b, and the door body 230 is at the open position at this time height, so that the airtight cover 200 is in an open state. In addition, the opening height of the door body 230 is greater than the thickness of the other door body 230, so one of the two door bodies 230 can move to the other of the two door bodies 230 along the sliding track 215 at the opening height. above, so that the two doors 230 are partially overlapped when viewed from above. When the two doors 230 are at the closed height and the open height, the two doors 230 can be kept substantially parallel to each other. Therefore, it is necessary to open the door 230 or close it. The space for moving the door body 230 is very small.

In some embodiments of the present invention, the plurality of guiding grooves 213 are lower than the second part 215b of the sliding track 215, and the plurality of guiding grooves 213 are arranged between the two first parts 215a, so the door body 230 is located at the second When the second part 215b covers the through hole 211 at the closing height, the pressure handle 250 pushes against the guide groove 213 and presses the door body 230, thereby preventing the pressure handle 250 from being interfered by the door body 230 when rotating, but this The invention is not limited thereto.

In some embodiments of the present invention, the door body 230 includes two sliding rails 235 and two sliding blocks 237 extending in parallel, wherein the sliding rails 235 are arranged on the upper surface of the door body 230, and the sliding blocks 237 are arranged on the lower surface of the door body 230 , and the slide rail 235 extends from one edge of the door body 230 to another corresponding edge of the door body 230 (for example, two opposite side edges of the door body 230), so the slide rail 235 can reinforce the door body 230 and lift the door body 230 mechanical strength. Please refer to Fig. 6 and Fig. 9 at the same time, one of the two door bodies 230 can move along the sliding track 215 to the top of the other of the two door bodies 230, so that the slider 237 of one of the two door bodies 230 can slidably connect the two doors The sliding rail 235 of the other body 230, so the two door bodies 230 can be stacked up and down to support each other, so as to facilitate the horizontal movement of the two door bodies 230 relative to each other. Specifically, rollers can be provided on the slider 237 so that the slider 237 can move on the slide rail 235 through the rollers.

Please refer to FIG. 10 , which is a cross-sectional view of the fixing rod 270 according to the section line X in FIG. 2 . In some embodiments of the present invention, the airtight cover 200 includes a fixing rod 270, the fixing rod 270 is detachably connected to the fixing frame 210, and the fixing rod 270 is used to be fixed between the two through holes 211 and across the through hole 211. The two opposite sides, wherein the fixing rod 270 has a T-shaped section and can fix the two doors 230 to the fixing frame 210 from the side and the top. In addition, the pressure handle 250 can also be arranged on the fixed rod 270 to pressurize the fixed rod 270, and the pressure handle 250 then pressurizes the door body 230 through the fixed rod 270, so that the airtight cover 200 can pass through the pressure handle. The combination of 250 and the fixing rod 270 can further provide excellent airtight function and enhance the overall mechanical strength.

Please refer to Figure 2 and Figure 3. In some embodiments of the present invention, the airtight cover 200 includes a fixed lock 280, at least a part of the fixed lock 280 is disposed on the side of the door body 230 and configured to move vertically to fix the door body 230 to the fixed frame 210, wherein The fixed lock 280 includes a rotating hook 281 and a fixed hook 283, the rotating hook 281 is configured to selectively fix the fixing hook 283, wherein the rotating hook 281 is arranged on the side of the door body 230, and the fixed hook 283 is arranged on the fixed frame 210 and is aligned with each other. Adjacent to the edge of the through hole 211 . Specifically, the rotating hook 281 includes a C-shaped portion 281a, a handle 281b and a rotating shaft 281c, the C-shaped portion 281a is rotatably connected to the rotating shaft 281c, and the handle 281b is arranged at one end of the C-shaped portion 281a, wherein the handle 281b is configured to Being pushed, the C-shaped portion 281a is driven to rotate relative to the rotating shaft 281c, so that the C-shaped portion 281a is further fixed on or separated from the fixing hook 283 , so that the door body 230 can be fixed on or detached from the fixing frame 210 . Therefore, the user can simply rotate the fixing lock 280 along the vertical plane to lock the door body 230 to the fixing frame 210 . Compared with the general fixing structure, the rotating hook 281 of the fixing lock 280 can only rotate along the vertical plane and engage with the fixing hook 283 , so the fixing lock 280 has the function of saving space substantially.

In some other embodiments of the present invention, the airtight cover 200 does not include the side wall 214 and the sliding track 215 , wherein the door body 230 is detachably fixed to the fixing frame 210 . Therefore, the user can place the door body 230 separated from the fixing frame 210 on the fixing frame 210 , and then fix the fixing frame 210 and the door body 230 to each other through the fixing lock 280 . Next, the user uses the pressure handle 250 to apply pressure to the door body 230 so that the airtight cover 200 is in an airtight state. In addition, after the user releases the airtight state of the airtight cover 200 through the pressure handle 250, the user can further unlock the fixed lock 280, so that the door body 230 is in a state of detachable from the fixed frame 210, so that the user can remove the door body 230 is removed from the fixed frame 210.

Please refer to Figures 5 to 8. In some embodiments of the present invention, the airtight cover 200 includes a connecting rod 290, and the second sections 253 of the plurality of pressure handles 250 are rotatably connected to the connecting rod 290, so that the user can push the connecting rod 290 to simultaneously move a plurality of The handle 250 is pressurized and the door body 230 is pressurized or depressurized, thereby effectively making the airtight cover 200 in an airtight state and avoiding air leakage.

In summary, the present invention provides an airtight device, which has a container and an airtight cover, the airtight cover covers the container and can prevent gas or liquid from moving into or out of the container, so the items stored in the container (such as food) Or medicines) can be isolated from the outside world, thereby avoiding air leakage and causing the stored items to be corrupted and inedible or ingestible. In addition, the airtight cover of the present invention is provided with a pressurized handle, and the user can simply turn the pressurized handle to make the airtight cover in an airtight state or release the airtight state.

While various embodiments of the present invention have been described above, it should be understood that the various embodiments have been presented by way of example only, and not limitation. Many changes may be made to the disclosed embodiments in light of the disclosure herein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by the above-described embodiments.

10: Airtight device 100: container 110: opening 200: airtight cover 210: fixed frame 211: through hole 213: guide groove 213a: first top surface 213b: second top surface 214: side wall 215: sliding track 215a: Part I 215b: Second part 230: door body 231: Raised part 233: Bearing 234: Grip 235: slide rail 237:Slider 250: pressure handle 251: first paragraph 253: second paragraph 255: Rotation axis 270: fixed rod 280: fixed lock 281:Turn hook 281a: C-shaped part 281b: handle 281c: Rotation shaft 283: fixed hook 290: connecting rod S1, S2, S3, S4: dashed box X: section line

In order to achieve the above advantages and features, the principles of the above brief description will be more specifically explained with reference to the embodiments shown in the accompanying drawings. These drawings illustrate the invention only, and therefore do not limit the scope of the invention. The principles of the invention will be clearly explained and additional features and details will be fully described by means of the accompanying drawings, in which: Figure 1 shows a schematic diagram of an airtight device according to some embodiments of the present invention; Figure 2 shows an exploded view of an airtight cover according to some embodiments of the present invention; Fig. 3 shows a partially enlarged view of the fixing frame of the airtight cover according to some embodiments of the present invention; Figure 4 shows a partial enlarged view of the door body of the airtight cover according to some embodiments of the present invention; Fig. 5 shows a schematic diagram of an airtight cover according to some embodiments of the present invention, wherein the airtight cover is in a pressurized state; Fig. 6 shows a schematic diagram of an airtight cover according to some embodiments of the present invention, wherein the airtight cover is in a depressurized state; Figure 7 is an enlarged view of the dotted box S3 in Figure 5; Figure 8 is an enlarged view of the dotted box S4 in Figure 6; Fig. 9 shows a schematic diagram of an airtight cover according to some embodiments of the present invention, wherein the airtight cover is in an open state; and Fig. 10 is a sectional view of the fixing rod according to the section line X in Fig. 2 .

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

10: Airtight device

100: container

110: opening

200: airtight cover

210: fixed frame

211: through hole

213: guide groove

214: side wall

215: sliding track

230: door body

234: Grip

235: slide rail

250: pressure handle

270: fixed rod

280: fixed lock

281:Turn hook

283: fixed hook

290: connecting rod

Claims (14)

An airtight device comprising: container; and An airtight cover is arranged on the container, wherein the airtight cover includes: The fixed frame has at least one through hole and at least one guide groove, wherein the through hole communicates with the inner space of the container, and the guide groove has adjacent first and second top surfaces, wherein the second top surface is as high as on the first top face; at least one door selectively covering the through hole; and The pressure handle is pivotally connected to the door body, the pressure handle includes a first section, a second section and a rotation axis, the rotation axis is located between the first section and the second section, and the first section segment and the second segment are configured to rotate relative to each other, and wherein the second segment is configured to be forced to drive the first segment to move from under the second top surface to under the first top surface such that the axis of rotation Apply pressure to the door. The airtight device according to claim 1, wherein the fixed frame further includes a sliding track, the door body has a protrusion inserted into the sliding track, the sliding track is higher than the through hole and the first part of the sliding track is opposite to The height of the through hole is tapered, and wherein the door body is used to face toward or away from the lowest end of the first part, so that the door body is at a closed height or an open height. The airtight device according to claim 2, wherein the height of the second part of the sliding track relative to the through hole is constant, and the second part communicates with the higher end of the first part. The airtight device according to claim 2, wherein the door bearing is arranged on the raised portion. The airtight device according to claim 1, wherein the airtight cover includes a connecting rod, the airtight cover includes a plurality of the pressurizing handles, and the second sections of the pressurizing handles are rotatably connected to the connecting rod. The airtight device as claimed in claim 1, wherein the airtight cover includes a fixed lock, at least a part of which is disposed on the side of the door body and configured to move vertically to fix the door body to the fixed frame. The airtight device according to claim 1, wherein the at least one door body includes the two door bodies, each of the two door bodies includes a slide rail and a slider, and one of the two door bodies is used to move to the other of the two door bodies Above one, the slider of the one of the two doors is slidably connected to the slide rail of the other of the two doors. An airtight device comprising: container; and An airtight cover is arranged on the container, wherein the airtight cover includes: The fixed frame has two through holes and a plurality of guide grooves, the two through holes communicate with the inner space of the container, wherein each of the guide grooves has adjacent first top surfaces and second top surfaces, wherein the first the second top surface is higher than the first top surface; two gates, selectively covering the two through holes; and A plurality of pressure handles are pivotally connected to the two door bodies, wherein each of the pressure handles includes a first section, a second section and a rotation axis, and the rotation axis is located between the first section and the second section , and the first segment and the second segment are configured to rotate relative to each other, and wherein the second segment is configured to be forced to drive the first segment to move from under the second bottom surface to under the first top surface, such that The rotation axis pressurizes one of the two door bodies. The airtight device as described in claim 8, wherein the fixed frame further includes a sliding track, each of the two door bodies has a protrusion inserted into the sliding track, the sliding track is higher than the through hole and the two sliding tracks The height of the first part increases gradually relative to the through hole, and wherein the two doors are used to face or stay away from the lowest ends of the two first parts, so that the two doors are at a closed height or an open height. The airtight device according to claim 9, wherein the height of the second part of the sliding track relative to the through hole is constant, the second part communicates with the higher end of the two first parts and is located between the two first parts . The airtight device according to claim 9, wherein each of the two door bodies has a bearing, and the bearing is arranged on the raised portion. The airtight device according to claim 8, wherein the airtight cover includes a fixed rod connected to the fixed frame, and the fixed rod is arranged between the two through holes, wherein the fixed rod has a T-shaped cross-section and uses Fix the two doors from the side and above. The airtight device as claimed in item 8, wherein the airtight cover includes a fixed lock, at least a part of the fixed lock is arranged on the side of the one of the two door bodies, and the fixed lock is configured to move vertically to lock the door The person of the body is fixed on the fixed frame. The airtight device as described in claim 8, wherein each of the two doors includes a slide rail and a slider, and one of the two doors is used to move to the other of the two doors, so that the two doors The slider of the one is slidably connected to the slide rail of the other of the two door bodies.

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