Inner door fixing device of double-layer door

Abstract

The utility model discloses a double-layer door inner door fixing device which comprises an outer door fixing piece, an inner door fixing piece and a rotating shaft, the outer door fixing piece is fixed on an outer door, the outer door fixing piece is matched with the rotating shaft in a rotating mode, the inner door fixing piece is fixedly connected with the rotating shaft, and the double-layer door inner door fixing device has the advantages of being simple in structure, convenient to operate, small in occupied space and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of substrate cleaning, in particular to a double-door inner door fixing device. Background Art

[0002] In the liquid crystal panel and semiconductor production industries, substrate cleaning and process operations are generally carried out in a chamber with a door that can be opened and closed. Cleaning the substrate surface or performing process operations on the substrate may involve the use of liquid chemicals that are harmful to the human body. This places strict requirements on the sealing of the chamber to prevent the liquid chemicals from splashing out of the chamber during use and causing harm to the human body.

[0003] Therefore, double-layer doors are generally used for sealing, including outer doors and inner doors. The outer door and inner door are hinged to the door frame of the chamber respectively. The space outside the outer door is large, and a variety of fixing mechanisms can be set to fix the outer door. When opening, the outer door is opened first, and the outer door is fixed by the fixing mechanism to ensure the open state of the outer door. However, the gap between the inner door and the outer door is small, and it is not convenient to fix the inside of the door.

[0004] Therefore, it is urgent to design a device that can fix the inner door so that the operator does not need to hold the sealed door all the time when inspecting and maintaining the interior of the chamber. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to provide a double-door inner door fixing device which has a simple structure, is easy to operate and occupies little space.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A double-door inner door fixing device is characterized in that it includes an outer door fixing part, an inner door fixing part and a rotating shaft, the outer door fixing part is fixed to the outer door, the outer door fixing part rotates in cooperation with the rotating shaft, and the inner door fixing part is fixedly connected to the rotating shaft; after the outer door and the inner door are opened, the rotating shaft is rotated, and the rotation of the rotating shaft drives the inner door fixing part to rotate, and the inner door fixing part rotates to press against the inner door to limit the inner door. When the door needs to be closed, the rotating shaft is rotated to drive the inner door fixing part to rotate, so that the inner door fixing part is separated from the inner door, and the inner door can be closed. It has a simple structure, is easy to operate, and takes up little space.

[0008] The outer door fixing piece of the utility model is provided with a plate through-hole for the rotation shaft to pass through, and the rotation shaft passes through the plate through-hole and is rotatably matched with the outer door fixing piece.

[0009] The outer door fixing member of the utility model is fixed on the outer surface of the outer door, and the outer door is provided with a door through-hole for the rotating shaft to pass through. The rotating shaft passes through the plate through-hole of the outer door fixing member and the door through-hole on the outer door in sequence and is fixed to the inner door fixing member. With this structural arrangement, the rotating shaft can be slightly moved axially, which is convenient for adjusting the axial position of the inner door fixing member and facilitating the interference limitation of the inner door.

[0010] The utility model provides a sealing ring between the outer door fixing piece and the rotating shaft to achieve sealing and prevent the medicine liquid from seeping out from the inner side of the door.

[0011] The top of the rotating shaft of the utility model extends radially to form a shaft head, and the shaft head abuts against the outer surface of the outer door fixing piece to realize the axial limitation of the rotating shaft.

[0012] The inner door fixing member of the present invention adopts a long strip plate structure, and the rotating shaft is located in the middle of the inner door fixing member; it is set as a long strip plate structure to facilitate abutting against the inner door, and the rotating shaft is located in the middle of the inner door fixing member, and can abut against the inner door through the left or right side of the inner door fixing member, so that the rotating shaft can rotate flexibly and has few restrictions on use.

[0013] The bottom of the rotating shaft of the utility model is provided with a bottom threaded hole, and the inner door fixing piece is provided with a bolt through-hole. The inner door fixing piece is arranged at the bottom of the rotating shaft and is threadedly connected to the bottom threaded hole of the rotating shaft through a bolt passing through the bolt through-hole; the inner door fixing piece is fixed, and installation and disassembly are convenient.

[0014] The inner door fixing piece of the utility model is provided with a shaft limiting groove on the end surface facing the shaft, the bottom of the shaft is inserted into the shaft limiting groove, and the bolt is passed through the shaft limiting groove; the setting of the shaft limiting groove limits the shaft, which facilitates the fixation of the shaft and the inner door fixing piece.

[0015] A rotating handle is fixed on the rotating shaft of the utility model between the outer door and the inner door fixing member; the arrangement of the rotating handle facilitates the rotation of the rotating shaft.

[0016] The rotating handle of the utility model comprises a grip and a connecting plate, wherein one end of the connecting plate facing the rotating shaft is provided with a rotating shaft slot, the other end of the connecting plate is fixedly connected to the grip, and the rotating shaft slot is engaged and fixed with the rotating shaft.

[0017] The beneficial effects of the present invention are as follows: after the outer door and the inner door are opened, the inner door fixing part is driven to rotate by rotating the rotating shaft, and the inner door fixing part rotates and presses against the inner door to limit the inner door; when the door needs to be closed, the rotating shaft is rotated to drive the inner door fixing part to rotate, so that the inner door fixing part is separated from the inner door, and the inner door can be closed; the structure is simple, the operation is convenient, and it takes up little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the inner door fixing device of the present utility model.

[0019] Figure 2 This is a structural schematic diagram of the inner door fixing device of the utility model from another angle.

[0020] Figure 3 This is the front view of the inner door fixing device of the present utility model.

[0021] Figure 4 yes Figure 3 Middle AA section view.

[0022] Figure 5 It is a schematic diagram of the coordination structure of the inner door fixing device, outer door and inner door.

[0023] Figure 6 This is a structural diagram of the inner door fixing device cooperating with the outer door and the inner door from another angle.

[0024] Figure 7 This is another structural diagram of the inner door fixing device cooperating with the outer door and the inner door from another angle.

[0025] Figure 8 It is a structural diagram of the outer door and inner door in the open state.

[0026] Reference numerals: outer door fixing member-1;

[0027] Inner door fixing part-2, shaft limiting groove-201;

[0028] Rotating shaft-3, bottom threaded hole-301, shaft head-302;

[0029] Turn handle-4, grip-401, connecting plate-402;

[0030] Seal-5;

[0031] Bottom bolts - 6;

[0032] Outer gate - 7;

[0033] Inside the door -8. DETAILED DESCRIPTION

[0034] The present invention will be described below with reference to the accompanying drawings and embodiments.

[0035] As shown in the accompanying drawings, a double-door inner door fixing device includes an outer door fixing part 1, an inner door fixing part 2 and a rotating shaft 3. The outer door fixing part 1 is fixed on the outer door 7, and the outer door fixing part 1 rotates with the rotating shaft 3, and the inner door fixing part 2 is fixedly connected with the rotating shaft 3; after the outer door 7 and the inner door 8 are opened, the rotating shaft 3 is rotated, and the rotating shaft 3 rotates to drive the inner door fixing part 2 to rotate, and the inner door fixing part 2 rotates to press against the inner door 8 to limit the inner door 8. When the door needs to be closed, the rotating shaft 3 is rotated to drive the inner door fixing part 2 to rotate, so that the inner door fixing part 2 is disengaged from the inner door 8, and the inner door 8 can be closed. It has a simple structure, is easy to operate, and takes up little space.

[0036] The outer door fixing member 1 is provided with a plate through-hole for the rotation shaft 3 to pass through. The rotation shaft 3 passes through the plate through-hole and rotates in conjunction with the outer door fixing member 1 .

[0037] In this embodiment, the outer door fixing member 1 is fixed on the outer surface of the outer door 7, and the outer door 7 is provided with a door through-hole for the rotating shaft 3 to pass through. The rotating shaft 3 passes through the plate through-hole of the outer door fixing member 1 and the door through-hole on the outer door 7 in sequence and is fixed to the inner door fixing member 2; with this structural arrangement, the rotating shaft can be slightly moved axially, which is convenient for adjusting the axial position of the inner door fixing member and facilitating the interference limit of the inner door.

[0038] In this embodiment, the outer door fixing member 1 is welded to the outer surface of the outer door 7, which not only achieves fixation but also ensures a sealing effect.

[0039] A sealing ring 5 is provided between the outer door fixing member 1 and the rotating shaft 3 to achieve sealing and prevent the drug solution from leaking out from the inner side of the door.

[0040] In this embodiment, multiple sealing rings 5 ​​can be provided as needed.

[0041] The top of the rotating shaft 3 extends radially to form a shaft head 302 , and the inner surface of the shaft head 302 abuts against the outer surface of the outer door fixing member 1 , thereby realizing axial limitation of the rotating shaft 3 .

[0042] In this embodiment, the outer door fixing member 1 and the inner door fixing member 2 adopt a plate-like structure. The inner door fixing member 2 adopts a long strip plate-like structure, which is convenient for resisting the inner door 8, and the rotating shaft 3 is located in the middle of the inner door fixing member 2. It can resist the inner door 8 through the left or right side of the inner door fixing member 2, so that the rotating shaft 3 can rotate flexibly and has few restrictions on use.

[0043] A bottom threaded hole 301 is provided at the bottom of the rotating shaft 3 along the axial direction of the rotating shaft 3, and a bolt through-hole is provided on the inner door fixing member 2. The inner door fixing member 2 is arranged at the bottom of the rotating shaft 3 and is threadedly connected to the bottom threaded hole 301 of the rotating shaft 3 through the bottom bolt 6 passing through the bolt through-hole; the inner door fixing member 2 is fixed, and installation and disassembly are convenient.

[0044] In this embodiment, a shaft limiting groove 201 is provided on the end face of the inner door fixing member 2 facing the shaft 3, the bottom of the shaft 3 is inserted into the shaft limiting groove 201, and the bolt is passed through the shaft limiting groove 201; the setting of the shaft limiting groove 201 limits the shaft 3, thereby facilitating the fixation of the shaft 3 and the inner door fixing member 2.

[0045] In this embodiment, the bottom of the rotating shaft 3 is cut with a left limiting plane and a right limiting plane set opposite to each other along its axial direction. The shape of the rotating shaft limiting groove 201 matches the shape of the rotating shaft bottom, so that the bottom of the rotating shaft 3 will not rotate relatively when inserted into the rotating shaft limiting groove 201.

[0046] A rotating handle 4 is fixed on the rotating shaft 3 between the outer door 7 and the inner door fixing member 2; the arrangement of the rotating handle 4 facilitates the rotation of the rotating shaft 3 .

[0047] In this embodiment, the rotating handle 4 includes a grip 401 and a connecting plate 402. The connecting plate 402 has an arc-shaped rotation shaft slot at one end facing the rotation shaft 3. The other end of the connecting plate 402 is fixedly connected to the grip 401. The rotation shaft slot is engaged and fixed to the rotation shaft 3.

[0048] In this embodiment, the connecting plate 402 is provided with bolt through holes on both sides of the rotating shaft slot for the bolts to pass through, and the rotating shaft 3 is also provided with bolt through holes for the bolts to pass through. After the rotating shaft slot is clamped on the rotating shaft 3, the bolts pass through the connecting plate 402 and the bolt through holes on the rotating shaft 3 and are threadedly connected with the nuts to achieve the fixation of the rotating handle 4 and the rotating shaft 3.

[0049] When using this utility model:

[0050] 1. When the interior of the chamber needs to be inspected and maintained, the outer door 7 is first opened and fixed by the fixing mechanism (the fixing mechanism of the outer door is not a technical solution of this patent and will not be described in detail here), and then the inner door 8 is opened;

[0051] 2. The operator rotates the handle 4, which drives the shaft 3 to rotate. The rotation of the shaft 3 drives the inner door fixing member 2 to rotate. The inner surface of the inner door fixing member 2 abuts against the inner surface of the inner door 8, limiting the position of the inner door 8 and ensuring that the inner door 8 is in the open state;

[0052] 3. When closing the door, the operator rotates the handle 4, which drives the shaft 3 to rotate. The rotation of the shaft 3 drives the inner door fixing member 2 to rotate. The inner door fixing member 2 is disengaged from the inner door 8, and the inner door 8 can be closed, and then the outer door 7 is closed.

Claims

1. A double door inner door fixing device, characterized by: The utility model comprises an outer door fixing part, an inner door fixing part and a rotating shaft. The outer door fixing part is fixed on the outer door, the outer door fixing part rotates with the rotating shaft, and the inner door fixing part is fixedly connected with the rotating shaft.

2. The double door inner door fixing device according to claim 1, characterized in that: The outer door fixing piece is provided with a plate through-hole for the rotation shaft to pass through, and the rotation shaft passes through the plate through-hole and rotates in cooperation with the outer door fixing piece.

3. The double door inner door fixing device according to claim 2, characterized in that: The outer door fixing piece is fixed on the outer surface of the outer door. The outer door is provided with a door through-hole for the rotating shaft to pass through. The rotating shaft passes through the plate through-hole of the outer door fixing piece and the door through-hole on the outer door in sequence and is fixed to the inner door fixing piece.

4. The double door inner door fixing device according to claim 3, characterized in that: A sealing ring is provided between the outer door fixing member and the rotating shaft.

5. A double door inner door fixing device according to claim 3 or 4, characterized in that: The top of the rotating shaft extends radially to form a shaft head, and the shaft head abuts against the outer surface of the outer door fixing piece.

6. A double door inner door fixing device according to claim 1, 2, 3 or 4, characterized in that: The inner door fixing member adopts a long strip plate structure, and the rotating shaft is located in the middle of the inner door fixing member.

7. A double door inner door fixing device according to claim 1, 2, 3 or 4, characterized in that: A bottom threaded hole is provided at the bottom of the rotating shaft, a bolt through-hole is provided on the inner door fixing piece, and the inner door fixing piece is arranged at the bottom of the rotating shaft and is threadedly connected to the bottom threaded hole of the rotating shaft through a bolt passing through the bolt through-hole.

8. The double door inner door fixing device according to claim 7, characterized in that: A rotating shaft limiting groove is provided on the end surface of the inner door fixing member facing the rotating shaft, the bottom of the rotating shaft is inserted into the rotating shaft limiting groove, and the bolt through-hole passes through the rotating shaft limiting groove.

9. A double door inner door fixing device according to claim 1 or 2 or 3 or 4 or 8, characterized in that: A rotating handle is fixed on the rotating shaft between the outer door and the inner door fixing member.

10. The double door inner door fixing device according to claim 9, characterized in that: The rotating handle includes a grip and a connecting plate. A rotating shaft slot is provided at one end of the connecting plate facing the rotating shaft. The other end of the connecting plate is fixedly connected to the grip, and the rotating shaft slot is engaged and fixed to the rotating shaft.

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