Hinge connecting piece and laboratory door

Abstract

The utility model relates to the technical field of sealing equipment, in particular to a hinged connecting piece and a laboratory door, an adjusting plate in the hinged connecting piece is in threaded connection with a hinged stud, and when the adjusting plate is rotated, the adjusting plate ascends or descends in the axial direction of the hinged stud; when the adjusting plate ascends or descends, the abutting tightness between the adjusting plate and the first hinge block or the second hinge block can be adjusted, so that different installation requirements are met, and loosening caused after long-time use is tightened; the two parts needing to be hinged are fixedly connected with the first hinge block and the embedded block respectively, the embedded block is connected to the second hinge block, assembly and disassembly are easier, maintenance and replacement of the parts are facilitated, force can be distributed more evenly through the hinge connecting piece, stress concentration and potential damage of the parts are reduced, and the service life of the hinge connecting piece is prolonged. And meanwhile, direct contact and friction between the hinged connecting piece and the component are reduced, the overall bearing capacity of the hinged connecting piece is improved, sinking and deviation of the hinged component are prevented, and the service life of the hinged connecting piece is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment, in particular to a hinged connector and a laboratory door. Background Art

[0002] Laboratory doors are an important part of laboratory safety. In order to prevent dangerous substances in the laboratory from leaking to the external environment and to protect the safety of laboratory workers and the surrounding environment, the sealing of laboratory doors is very demanding. There are many factors that may affect the sealing of doors, such as the material of the door, uneven door frames, loose door gaps, etc. In order to improve the sealing of laboratory doors, first of all, you can use doors with good corrosion resistance, high temperature resistance, and fire resistance, such as steel doors and stainless steel doors. Doors made of these materials can effectively improve the sealing of doors; secondly, you can adjust the door frame to make it flat and fit tightly with the door leaf; in addition, you can also install sealing strips to fill the door gaps, such as installing rubber sealing strips, silicone sealing strips and other materials between the door frame and the door leaf, thereby effectively isolating the environment inside and outside the laboratory; when using laboratory doors, you should pay attention to regular inspection and maintenance, and replace damaged or aging parts in time to ensure that the laboratory doors are always in good condition. In good condition; for example, a laboratory door airtight device disclosed in publication number CN202321517491.8, a door frame and a door leaf are hinged by installing a plurality of existing hinges, but the load-bearing capacity of ordinary hinges is limited and cannot be adjusted according to actual conditions, and the door leaf of the laboratory door is generally heavy, and there will be a large vibration when closing the door. When the door is opened, the center of gravity of the door leaf tilts to the side away from the hinged component. Long-term opening and closing of the door can easily cause the door leaf to sink and deflect, and the hinges may become loose due to material deformation. Long-term use will affect the overall stability and sealing of the laboratory door.

[0003] Based on this, the applicant considered designing a hinged connection and a laboratory door that can improve stability. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a hinged connector and a laboratory door that can improve stability.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An articulated connector includes a first articulated block, a second articulated block, an embedded block, and a central rod;

[0007] The side wall of the second hinge block is provided with a side groove for the embedding block to be embedded, and the side groove is detachably connected to the second hinge block;

[0008] The central rod includes a hinged stud and two stacked adjustment plates connected to its outer side wall with threads, the first hinge block and the second hinge block are respectively rotatably connected to the two ends of the hinged stud, and the two adjustment plates are located between the first hinge block and the second hinge block and are separate.

[0009] The working principle and advantages of a hinged connector and laboratory door of this technical solution are:

[0010] The adjusting plate in the articulated connection is threadedly connected to the articulated stud, and when the adjusting plate is rotated, it is raised or lowered in the axial direction of the articulated stud; when the adjusting plate rises or falls, the tightness of its interference with the first articulated block or the second articulated block can be adjusted to adapt to different installation requirements and tighten the looseness that occurs after long-term use; the two parts that need to be articulated are fixedly connected to the first articulated block and the embedded block respectively, and then the embedded block is embedded in the second articulated block connected to the first articulated block, and the embedded block is connected to the second articulated block. There is no need to directly fix the first articulated block and the second articulated block connected together to the two parts that need to be articulated, which is easier to assemble and disassemble, and convenient for maintenance and replacement of parts, so that the articulated connection can distribute force more evenly, reduce stress concentration and potential damage of the parts, and at the same time reduce direct contact and friction between the articulated connection and the parts, improve the overall load-bearing capacity of the articulated connection, prevent sinking and displacement of the articulated parts, and extend the service life of the articulated connection.

[0011] Furthermore, the central rod also includes a central axis and two limiting end plates. The first hinge block and the second hinge block are both provided with connecting through holes for the hinge stud to pass through. The central axis of the hinge stud is provided with a hollow space for the central axis to pass through. The two ends of the central axis are respectively detachably connected to a limiting end plate, and the limiting end plate is in contact with the end of the first hinge block and the second hinge block facing away from the adjustment plate.

[0012] Furthermore, the hinge stud is of two parts, and the two parts of the hinge stud are respectively located in the connecting through-holes of the first hinge block and the second hinge block. The first hinge block and the hinge stud in the connecting through-hole and the second hinge block and the hinge stud in the connecting through-hole are both provided with corresponding positioning screw holes, and the positioning screw holes are detachably connected with positioning screws.

[0013] Furthermore, the outer edge of the adjustment plate is hexagonal.

[0014] Furthermore, screw holes threadedly connected to the bolts and studs are respectively provided on the top and bottom sides of the central shaft, and through holes for the bolts and studs to pass through are provided on the limiting end plate.

[0015] Furthermore, a screw hole threadedly connected to the bolt stud is formed on the side wall of the first hinge block.

[0016] Furthermore, the embedded block is a concave block, which includes a middle block and free blocks protruding from both ends of the middle block, and screw holes connected to bolts are provided on the two side walls of the two free blocks opposite to the side grooves.

[0017] Furthermore, the middle block is provided with a plurality of strip grooves for the bolts and studs to pass through.

[0018] A laboratory door comprises the above-mentioned hinged connection piece.

[0019] Furthermore, it comprises a door frame and a door leaf, wherein the first hinge block is fixedly connected to the door frame, and the embedded block is fixedly connected to the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the laboratory door of the utility model embodiment Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the laboratory door of the utility model embodiment Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the laboratory door according to the embodiment of the utility model. Figure 1 ;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of point A in the middle;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram of point C in the middle;

[0025] Figure 6 for Figure 4 The enlarged schematic diagram of point D in the middle;

[0026] Figure 7 for Figure 3 A magnified schematic diagram of point B in the middle;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the first elastic sealing body according to an embodiment of the present utility model;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the second elastic sealing body in an embodiment of the present utility model;

[0029] Figure 10 This is a schematic diagram of the cross-sectional structure of the laboratory door according to the embodiment of the utility model. Figure 2 ;

[0030] Figure 11 for Figure 10 The enlarged schematic diagram of point E in the middle;

[0031] Figure 12 This is a schematic diagram of the three-dimensional structure of the airtight compression device according to an embodiment of the utility model;

[0032] Figure 13 A schematic diagram of the three-dimensional structure of the assembly housing and restrictions of the embodiment of the utility model;

[0033] Figure 14 Schematic diagram of the three-dimensional structure of the hinged connector of the embodiment of the utility model Figure 1 ;

[0034] Figure 15 Schematic diagram of the three-dimensional structure of the hinged connector of the embodiment of the utility model Figure 2 ;

[0035] Figure 16 This is a schematic diagram of the cross-sectional structure of the hinged connector of the present invention. Figure 1 ;

[0036] Figure 17 This is a schematic diagram of the three-dimensional structure of the second hinge block in an embodiment of the present utility model;

[0037] Figure 18 This is a schematic diagram of the three-dimensional structure of the embedded block according to an embodiment of the present utility model;

[0038] Figure 19 This is a schematic diagram of the three-dimensional structure of the first hinge block of an embodiment of the present utility model;

[0039] Figure 20 This is a schematic diagram of the three-dimensional structure of the hinged stud, central axis and adjustment plate of the embodiment of the utility model;

[0040] Figure 21 This is a schematic diagram of the three-dimensional structure of the door frame according to an embodiment of the present utility model;

[0041] Figure 22 for Figure 21 The enlarged schematic diagram of point F in the middle;

[0042] Figure 23 This is a schematic cross-sectional view of a door frame according to an embodiment of the present invention;

[0043] Figure 24 This is an exploded schematic diagram of the main frame of an embodiment of the utility model;

[0044] Figure 25 This is an exploded schematic diagram of the sub-frame of an embodiment of the utility model;

[0045] In the above drawings: 100, door frame; 101, protruding portion; 200, door leaf; 201, window hole;

[0046] 310, first mounting groove; 320, first elastic sealing body; 321, first abutting tongue; 322, first inner cavity; 323, protruding hook; 3231, second inner cavity; 340, second mounting groove; 350, second elastic sealing body; 351, second abutting tongue; 352, third inner cavity; 360, mounting ring; 361, T-ring; 362, first annular groove; 370, first elastic sealing ring; 371, annular cavity; 380, transparent plate; 390, connecting ring; 391, second annular groove; 392, second elastic sealing ring;

[0047] 410, airtight mechanism; 411, rotating rod; 4111, rolling wheel; 4112, handle; 412, rotating drum; 4121, driving rod; 420, sealing block; 421, inclined surface; 422, vertical surface; 430, assembly housing; 431, first assembly groove; 432, gear; 433, rack; 434, second assembly groove; 435, limiting disk; 4351, matching hole; 4352, limiting angle; 4353, rotation arc; 440, connecting plate; 450, connecting block;

[0048] 510, first hinge block; 520, second hinge block; 521, side groove; 530, embedded block; 531, strip groove; 540, hinge stud; 550, limiting end plate; 560, adjustment plate; 570, center axis; 52, connecting through hole; 53, positioning screw hole; 54, positioning screw;

[0049] 610, main frame; 611, main top column; 612, main right column; 613, main left column; 614, main bottom column; 615, limiting baffle; 6151, adaptation slot; 620, sub-frame; 621, sub-top column; 622, sub-right column; 623, sub-left column; 630, extension plate; 641, perforated plate; 642, first plug-in block; 643, socket; 644, second plug-in block. DETAILED DESCRIPTION

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0051] Refer to Figure 1 、 Figure 2 、 Figure 14、 Figure 15 、 Figure 16 、 Figure 17 、 Figure 18 、 Figure 19 as well as Figure 20 , this embodiment provides a hinged connection member, which includes a first hinge block 510, a second hinge block 520, an embedded block 530 and a central rod;

[0052] The side wall of the second hinge block 520 is provided with a side groove 521 for the embedding block 530 to be embedded in, and the side groove 521 is detachably connected to the second hinge block 520;

[0053] The central rod includes a hinge stud 540 and two stacked adjustment plates 560 threadedly connected to its outer wall. The first hinge block 510 and the second hinge block 520 are respectively rotatably connected to the two ends of the hinge stud 540. The two adjustment plates 560 are located between and separately from the first hinge block 510 and the second hinge block 520.

[0054] In this embodiment, the adjustment plate 560 in the hinged connector is threadedly connected to the hinge stud 540. When the adjustment plate 560 is rotated, it is moved up or down in the axial direction of the hinge stud 540. When the adjustment plate 560 is raised or lowered, the tightness of its interference with the first hinge block 510 or the second hinge block 520 can be adjusted to meet different installation requirements and tighten the looseness after long-term use. The two parts that need to be hinged are fixedly connected to the first hinge block 510 and the embedded block 530 respectively, and then the embedded block 530 is embedded in the first hinge block 510 and connected to the first hinge block 510. The second hinge block 520 is raised, and the embedded block 530 is connected to the second hinge block 520. There is no need to directly fix the first hinge block 510 and the second hinge block 520 connected together on the two parts that need to be hinged. It is easier to assemble and disassemble, convenient for maintenance and replacement of parts, so that the hinged connection can distribute force more evenly, reduce stress concentration and potential damage of the parts, and at the same time reduce direct contact and friction between the hinged connection and the parts, improve the overall load-bearing capacity of the hinged connection, prevent the sinking and displacement of the hinged parts, and extend the service life of the hinged connection.

[0055] Preferably, if Figures 14 to 20As shown, the central rod also includes a central axis 570 and two limiting end plates 550. The first hinge block 510 and the second hinge block 520 are both provided with a connecting through-hole 52 for the hinge stud 540 to pass through. The central axis 570 of the hinge stud 540 is provided with a hollow space for the central axis 570 to pass through. The two ends of the central axis 570 are detachably connected to a limiting end plate 550. The limiting end plate 550 is in conflict with one end of the first hinge block 510 and the second hinge block 520 away from the adjustment plate 560. The central axis 570 of the central rod and the two limiting end plates 550 are for the hinge stud 540 and the first hinge block 510 and the second hinge block 520 thereon. 0 provides stable support and restriction, allowing the first hinge block 510 and the second hinge block 520 to be stably rotatably connected to the hinge stud 540, and both the first hinge block 510 and the second hinge block 520 are provided with a connection through-hole 52 for the hinge stud 540 to pass through and contact, thereby increasing the contact area between the first hinge block 510, the second hinge block 520 and the hinge stud 540, thereby improving the overall stability and load-bearing capacity of the hinge connection; and the central shaft 570, the limiting end plate 550, the hinge stud 540, the first hinge block 510 and the second hinge block 520 are detachably connected together, which is convenient for separate production, assembly, maintenance or replacement.

[0056] Preferably, if Figures 14 to 20 As shown, the hinge stud 540 is a two-part type, and the two-part hinge studs 540 are respectively located in the connecting through-holes 52 of the first hinge block 510 and the second hinge block 520. The hinge studs 540 in the first hinge block 510 and its connecting through-hole 52 and the hinge studs 540 in the second hinge block 520 and its connecting through-hole 52 are correspondingly provided with positioning screw holes 53, and the positioning screw holes 53 are detachably connected with positioning screws 54; the two-part hinge stud 540 allows for more flexible installation and adjustment, and the positioning screws 54 can be screwed into the positioning holes of the first hinge block 510 and its inner hinge studs 540 at the same time. The screw hole 53 and the positioning screw 54 can also be screwed into the positioning screw hole 53 of the first hinge block 510 and the hinge stud 540 therein, so as to realize the precise positioning and stable fixation of the first hinge block 510 and the second hinge block 520 and the hinge stud 540 therein, thereby reducing the loosening caused by vibration or impact during use; the two-section hinge stud 540 and the positioning screw 54 in the positioning screw hole 53 help to disperse the force, thereby improving the durability and load-bearing capacity of the entire hinged connection; the positioning screw hole 53 and the positioning screw 54 are detachably connected, so as to facilitate adjustment or replacement when needed.

[0057] Preferably, if Figure 14 、 Figure 15 as well as Figure 20 As shown, the outer edge of the adjustment plate 560 is hexagonal, which makes it convenient to rotate the adjustment plate 560 using a wrench or other tools.

[0058] Preferably, if Figure 14 、 Figure 15 as well as Figure 20 As shown, screw holes for threaded connection with bolts and studs are respectively provided on the top and bottom sides of the central shaft 570, and through holes for the bolts and studs to pass through are provided on the limiting end plate 550; the limiting end plate 550 is detachably connected to both ends of the central shaft 570 by bolts, which is firm, reliable, and convenient for installation and disassembly.

[0059] Preferably, if Figure 14 as well as Figure 19 As shown, the side wall of the first hinge block 510 is provided with a screw hole threadedly connected to the bolt stud; the second hinge block 520 is detachably connected to the component to be hinged by the bolt, which is firm, reliable and convenient to install and disassemble.

[0060] Preferably, if Figures 14 to 18 As shown, the embedded block 530 is a concave block, which includes a middle block and free blocks protruding at both ends of the middle block. The two side walls of the free blocks opposite to the side grooves 521 are provided with screw holes connected to the bolts; the embedded block 530 contacts the inner side wall of the side groove 521 of the second hinge block 520 through the free blocks thereon, and the two are connected by bolts, with a large contact area, a firm and reliable connection, and convenient installation and disassembly.

[0061] Preferably, if Figure 18 As shown, the middle block is provided with a plurality of strip grooves 531 for the bolts and studs to pass through; it is convenient to connect the embedded block 530 with the component to be hinged by bolts, and the position of the embedded block 530 can be fine-tuned; specifically, the above-mentioned embedded block 530 or the first hinge block 510 can also be directly welded to the component to be hinged.

[0062] Specifically, the first hinge block 510 , the second hinge block 520 , the embedded block 530 , the hinge stud 540 , the limiting end plate 550 , the adjustment plate 560 and the central shaft 570 may all be made of stainless steel.

[0063] A laboratory door comprises the above-mentioned hinged connection piece.

[0064] Preferably, the laboratory door includes a door frame 100 and a door leaf 200, the first hinge block 510 is fixedly connected to the door frame 100, and the embedded block 530 is fixedly connected to the door leaf 200; the laboratory door uses the above-mentioned hinged connection to hinge the door frame 100 and the door leaf 200 together, which can improve the load-bearing capacity of the door leaf 200, reduce vibration, prevent sinking and deviation, maintain the verticality and alignment of the door leaf 200, and extend the service life; the design of the hinged connection allows quick installation and maintenance, simplifies the replacement or repair process of the door leaf 200; since the stability and alignment of the door leaf 200 are guaranteed, the sealing between the door leaf 200 and the door frame 100 is also improved accordingly, preventing cross-contamination of the environment inside and outside the laboratory.

[0065] Refer to Figures 1 to 9 The laboratory door further comprises a sealing structure, which comprises a door frame 100 and a door leaf 200 hinged therein, and further comprises a first sealing structure and a second sealing structure;

[0066] The first sealing structure includes a first mounting groove 310 provided on the side of the door frame 100 and a first elastic sealing body 320 provided therein; when the door leaf 200 on the door frame 100 is closed, the side of the door leaf 200 contacts and presses the first elastic sealing body 320;

[0067] The second sealing structure includes a protrusion 101 arranged on the side of the door frame 100, a second mounting groove 340 arranged on the side of the door leaf 200, and a second elastic sealing body 350 arranged therein; when the door leaf 200 on the door frame 100 is closed, the protrusion 101 on the door frame 100 extends into the second mounting groove 340, contacts and squeezes the second elastic sealing body 350.

[0068] In this embodiment, when the door leaf 200 on the door frame 100 is closed, the side of the door leaf 200 contacts and squeezes the first elastic sealing body 320 in the first mounting groove 310, and the protrusion 101 on the door frame 100 extends into the second mounting groove 340, contacts and squeezes the second elastic sealing body 350 in the second mounting groove 340, forming a double seal, providing a double sealing effect, enhancing the sealing between the door leaf 200 and the door frame 100, and can effectively prevent cross-contamination of the environment inside and outside the laboratory; the first elastic sealing body 320 and the second elastic sealing body 350 have good elasticity and flexibility, and can adapt to the slight unevenness between the door leaf 200 and the door frame 100 , ensuring that the sealing strip fits tightly against the contact surface, thereby improving the sealing effect; the protrusion 101 on the door frame 100 can make deeper contact with the second elastic sealing body 350 when the door leaf 200 is closed, thereby enhancing the sealing effect, and at the same time, the structure of the protrusion 101 can also serve as a physical barrier to further prevent the leakage of harmful substances; the first mounting groove 310 on the door frame 100 and the second mounting groove 340 on the door leaf 200 respectively provide fixation and support for the first elastic sealing body 320 and the second elastic sealing body 350, ensuring that the first elastic sealing body 320 and the second elastic seal can function stably when the door leaf 200 is closed, and are not easy to fall off or shift.

[0069] Preferably, if Figures 3 to 5As shown, the first elastic sealing body 320 includes a mounting portion located in the first mounting groove 310 and a protruding hook 323 protruding from the first mounting groove 310; the mounting portion includes a plurality of first abutting tongues 321 and a first inner cavity 322 that abut against the inner side wall of the first mounting groove 310, and the protruding hook 323 includes a second inner cavity 3231; the mounting portion of the first elastic sealing body 320 is located in the first mounting groove 310, ensuring that the sealing body can be stably fixed on the side of the door frame 100; the plurality of first abutting tongues 321 on the mounting portion can increase the friction between the first elastic sealing body 320 and the first mounting groove 310, ensuring that the sealing body will not loosen or shift during the closing and opening process of the door leaf 200; the first inner cavity 322 of the mounting portion can provide a certain elastic space for the sealing body, so that the first elastic sealing body 320 can be fixed to the side of the door frame 100 when the first elastic sealing body 320 is under the influence of the first abutting tongue 321. When under pressure, it can better adapt to and restore its shape, thereby improving the sealing effect; the protruding hook 323 protruding from the first mounting groove 310 on the first elastic sealing body 320 enables the first elastic sealing body 320 to contact the door leaf 200 more deeply when the door leaf 200 is closed, thereby increasing the tightness of the seal, while avoiding direct contact between the door leaf 200 and the door frame 100 when closed, thereby preventing the door frame 100 and the door leaf 200 from being scratched or bumped due to direct contact; the second inner cavity 3231 inside the protruding hook 323 can also enhance the elasticity and adaptability of the first elastic sealing body 320, so that the first elastic sealing body 320 can better adapt to and restore its shape when under pressure, thereby improving the sealing effect; specifically, two first abutting tongues 321 are respectively provided on both sides of the mounting portion, and two first inner cavities 322 are provided inside.

[0070] Preferably, if Figure 3 、 Figure 4 as well as Figure 6 As shown, the second elastic sealing body 350 includes several second abutting tongues 351 that abut against the inner wall of the second mounting groove 340 and a third inner cavity 352; the several second abutting tongues 351 on the second elastic sealing body 350 can increase the friction between the second elastic sealing body 350 and the second mounting groove 340, ensuring that the sealing body remains stable during the closing and opening process of the door leaf 200 and is not easy to shift or fall off; the third inner cavity 352 inside the second elastic sealing body 350 provides additional elastic space for the sealing body, so that the second elastic sealing body 350 can better adapt to and restore its shape when under pressure, thereby improving the sealing effect; specifically, two second abutting tongues 351 are respectively provided on both sides of the first elastic sealing body 320, and a third inner cavity 352 is provided inside.

[0071] Preferably, if Figures 1 to 6As shown, the door frame 100 is rectangular, and a first mounting groove 310 is provided on each of the four sides of the door frame 100. The four first mounting grooves 310 are interconnected and each is provided with a first elastic sealing body 320; the door frame 100 is designed to be rectangular, which is a common shape of laboratory doors and is convenient for installation and sealing; the door frame 100 has mounting grooves on the top, bottom, left and right sides, providing installation space for the sealing body; the four first mounting grooves 310 are interconnected, and a first elastic sealing body 320 is provided in each mounting groove, which can provide all-round sealing.

[0072] Preferably, if Figures 1 to 6 As shown, the door leaf 200 is rectangular, and a second mounting groove 340 is provided on each of the four sides of the door leaf 200. The four second mounting grooves 340 are interconnected and each is provided with a second elastic sealing body 350, and the door frame 100 is provided with four protrusions corresponding to the four second mounting grooves 340 respectively; the door leaf 200 is designed to be rectangular, matching the shape of the door frame 100, ensuring the overall coordination and sealing; each side of the door leaf 200 is provided with a second mounting groove 340, corresponding to the four sides of the door frame 100, providing space for installing the second elastic sealing body 350; the four second mounting grooves 340 are interconnected, and each of the second mounting grooves 340 is provided with a second elastic sealing body 350, which can provide all-round sealing; the door frame 100 is provided with four protrusions corresponding to the four second mounting grooves 340 respectively, which interact with the second elastic sealing body 350 when the door leaf 200 is closed to enhance the sealing effect; specifically, the four protrusions on the door frame 100 are interconnected to form a ring to provide a sealing effect.

[0073] Preferably, if Figure 8 and Figure 9 As shown, the four second elastic sealing bodies 350 are integrally formed; the integrally formed second elastic sealing body 350 ensures the integrity of the sealing body, avoids the problem of poor sealing that may occur at the joints of multiple parts, and the integrally formed second elastic sealing body 350 reduces seams and connection points, providing overall durability and service life; specifically, the four first elastic sealing bodies 320 are also integrally formed.

[0074] Preferably, if Figure 1 and Figure 2 As shown, a transparent window is provided on the door leaf 200; the transparent window allows personnel outside the laboratory to observe the situation inside the laboratory without opening the door and confirm the internal safety status.

[0075] Preferably, if Figure 1 、 Figure 2 、 Figure 3 and Figure 7As shown, a window hole 201 is provided on the door leaf 200, and a mounting ring 360 is fixedly installed in the window hole 201. A T-shaped ring 361 is protruding from the inner wall of the mounting ring 360, and transparent plates 380 are respectively provided on both sides of the T-shaped ring 361. Connecting rings 390 are detachably connected to both sides of the mounting ring 360, and the edge of the transparent plate 380 is located between the T-shaped ring 361 and the connecting ring 390; during installation, the connecting ring 390 is connected to the mounting ring 360, and the connecting ring 390 and the T-shaped ring 361 on the mounting ring 360 clamp and fix the edge of the transparent plate 380, forming a transparent window through the center of the transparent plate 380 and the window hole 201.

[0076] Preferably, if Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, there are first annular grooves 362 on both sides of the T-ring 361, and a first elastic sealing ring 370 is provided in the first annular groove 362. A second annular groove 391 is provided on the side of the connecting ring 390 facing the transparent window, and a second elastic sealing ring 392 is provided in the second annular groove 391; an annular cavity 371 is provided in the first elastic sealing ring 370; the first annular grooves 362 on both sides of the T-ring 361 and the first elastic sealing ring 370 therein provide a sealing edge for the transparent plate 380 to prevent gas, liquid or other substances from leaking through the gap between the transparent plate 380 and the mounting ring 360; the connecting ring 390 is provided with a second annular groove 391 on the side facing the transparent window. The second annular groove 391 and the second elastic sealing ring 392 therein add another layer of sealing to ensure the sealing between the transparent plate 380 and the connecting ring 390; the annular cavity 371 set in the first elastic sealing ring 370 provides a certain elastic space for the sealing ring, allowing the sealing ring to better adapt to shape changes when under pressure, thereby improving the sealing effect; through the cooperation of the first elastic sealing ring 370 and the second elastic sealing ring 392, a double sealing mechanism is formed, which significantly improves the sealing performance of the transparent window; specifically, the inner wall of the above-mentioned T-ring 361 is tightly attached to the decorative panel, thereby improving the aesthetics of the transparent window.

[0077] Refer to Figure 1 、 Figure 2 、 Figure 10 、 Figure 11 、 Figure 12 as well as Figure 13As shown, the laboratory door also includes an airtight pressing device, which includes a door leaf 200, a door frame 100 and an airtight pressing device, including a door leaf 200, a door frame 100 and an airtight pressing device, one side of the door leaf 200 is hingedly mounted on one side of the door frame 100, and the other side of the door leaf 200 is matched with the other side of the door frame 100 through the airtight pressing device, the airtight pressing device includes multiple airtight mechanisms 410, multiple sealing blocks 420 and a limiting mechanism, multiple sealing blocks 420 are arranged on the other side of the door frame 100 from top to bottom, the lower half of the outer side of the sealing block 420 is set as an inclined surface 421, and the upper half is a vertical surface 422; multiple assembly shells 430 are provided in the door leaf 200 from top to bottom, one airtight mechanism 410 corresponds to one assembly shell 430 and one sealing block 420, the airtight mechanism 410 includes a rotating rod 411, a rotating cylinder 412, a gear 432, The rack 433 slides up and down in the corresponding assembly shell 430, and multiple racks 433 are connected together by a vertical rod. The gear 432 is rotatably arranged in the assembly shell 430, and the gear 432 is engaged with the rack 433. The rotating drum 412 is arranged on the outer surface of the door leaf 200. The inner end of the rotating drum 412 passes through the door leaf 200 and the assembly shell 430 and is connected to the gear 432. The rotating rod 411 is passed through the outer end of the rotating drum 412. The end of the rotating rod 411 facing the sealing block 420 is provided with a rolling wheel 4111. When sealing is performed, the rotating rod 411 rotates with the rotating drum 412 as the center, so that the rolling wheel 4111 rolls from the inclined surface 421 to the vertical surface 422; the limiting mechanism is used to limit the rotation angle of the rotating rod 411, and the rolling wheel 4111 on the rotating rod 411 cannot roll out of the vertical surface 422 in the direction away from the inclined surface 421.

[0078] In this embodiment, the staff rotates the rotating rod 411, and the rotating rod 411 rotates counterclockwise around the rotating drum 412. During this process, the rolling wheel 4111 first rolls upward along the inclined surface 421 and finally rolls to the vertical surface 422. The rolling wheel 4111 is subjected to the outward force of the vertical surface 422, thereby effectively reducing the door gap; the rotation drives the gear 432 to rotate, because the gear 432 is engaged with the rack 433, and its multiple racks 433 are connected together by the vertical rod. The staff acts on one of the rotating rods 411 to drive all the rotating rods 411 After all the rolling wheels 4111 are rotated and matched with the corresponding sealing blocks 420, the sealing between the door leaf 200 and the door frame 100 is further improved; and the limiting mechanism can effectively limit the rotation angle of the rotating rod 411, to prevent the rolling wheel 4111 from rolling out of the vertical surface 422 in the direction away from the inclined surface 421, to avoid excessive rotation, and to ensure that the cooperation between the rolling wheel 4111 and the sealing block 420 is always effective; through the design of the limiting mechanism, the staff does not need to pay too much attention to the force and angle of rotation when using it, which simplifies the operation process and improves practicality.

[0079] Preferably, if Figures 10 to 13As shown, the limiting mechanism is arranged in the assembly shell 430, and the limiting mechanism includes a second assembly groove 434 opened in the assembly shell 430 and a limiting disk 435 located therein, and the limiting disk 435 is connected to the inner end of the rotating drum 412; the limiting mechanism is arranged in the assembly shell 430, which is conducive to keeping the appearance of the door leaf 200 neat, while hiding the operating mechanism inside to reduce interference from external factors; the limiting disk 435 located in the second assembly groove 434 is directly connected to the inner end of the rotating drum 412, so that the rotation of the rotating drum 412 can be directly transmitted to the limiting disk 435, thereby effectively controlling the rotation of the rotating rod 411; the limiting disk 435 and the second assembly groove 434 can limit the rotation angle of the rotating drum 412 and the rotating rod 411 thereon.

[0080] Preferably, if Figure 13 As shown, the limiting plate 435 is a curved moment plate, which radially includes two groups of obliquely opposite ends, one group of ends being a limiting angle 4352, and the other group of ends being a rotating arc 4353; when the curved moment plate rotates in the second assembly groove 434, the limiting angle 4352 can interfere with the inner wall of the second assembly groove 434 to limit the rotation angle of the rotating rod 411; the limiting angle 4352 of the curved moment plate plays a role in limiting the rotation angle of the rotating rod 411, while the rotating arc 4353 of the curved moment plate allows the rotating rod 411 to rotate freely within a certain angle range; through the interference of the limiting angle 4352, the excessive rotation of the rotating rod 411 is effectively prevented, thereby ensuring the reliability of the seal; the design of the limiting plate 435 helps to reduce wear and improve the durability of the entire limiting mechanism; the design of the limiting plate 435 is convenient for inspection and maintenance, which helps to timely discover and solve problems; specifically, the limiting mechanism limits the rotation angle of the rotating drum 412 and the upper rotating rod 411 to ninety degrees.

[0081] Preferably, a limiting mechanism is provided in each assembly shell 430 : the limiting mechanism in each assembly shell 430 helps to improve the effect of preventing the rotating rod 411 from excessive rotation. Of course, the limiting mechanism can also be provided in only one assembly shell 430 .

[0082] Preferably, if Figures 10 to 12As shown, the airtight pressing device also includes a connecting vertical plate 440, which is uprightly arranged in the door leaf 200 and fixedly connected to the inner wall of the door leaf 200, and all the assembly shells 430 are fixedly connected to a connecting vertical plate 440; all the assembly shells 430 are fixedly connected to a connecting vertical plate 440, realizing centralized fixation of the assembly shells 430, improving the structural stability of the airtight pressing device, and providing solid support for the assembly shells 430; the assembly shells 430 are fixed on a unified connecting vertical plate 440, which helps to maintain the neat arrangement of the assembly shells 430 and ensure the consistency and coordination of the airtight mechanism 410; specifically, the connecting vertical plate 440 is a concave plate, and the opposite two sides of the concave plate are fixedly connected to the inner wall of the door leaf 200 to increase the contact area between the connecting vertical plate 440 and the door leaf 200 and improve the stability of the connecting vertical plate 440.

[0083] Preferably, if Figure 12 As shown, the airtight pressing device also includes a connecting block 450, which is upright in the door frame 100 and fixedly connected to the inner wall of the door frame 100, and the sealing block 420 is fixedly connected to the door frame 100 and the connecting block therein; the connecting block 450 provides a solid support structure for the sealing block 420, thereby enhancing the stability of the sealing block 420.

[0084] Preferably, if Figures 10 to 13 As shown, a first assembly groove 431 is provided in the assembly housing 430, and the gear 432 is rotatably mounted in the first assembly groove 431, and the rack 433 passes through the first assembly groove 431; by mounting the gear 432 in the first assembly groove 431 and allowing the rack 433 meshing with the gear 432 to pass through the first assembly groove 431, the space in the assembly housing 430 can be more effectively utilized and the overall layout can be optimized; the installation method of the gear 432 and the rack 433 helps to improve the stability of the entire airtight mechanism 410 and reduce transmission errors caused by improper installation. Specifically, the portion of the rotating drum 412 that passes through the gear 432 and the limiting disk 435 is the driving rod 4121. The gear 432 and the limiting disk 435 are provided with a matching hole 4351 for the driving rod 4121 to pass through. The cross-section of the matching hole 4351 and the driving rod 4121 is an arc-shaped square. One set of opposite sides of the arc-shaped square are straight lines, and the other set of opposite sides are arc-shaped. The cross-section of the matching hole 4351 and the driving rod 4121 can also be set to other polygons so that the driving rod 4121 can drive the gear 432 and the limiting disk 435 to rotate.

[0085] Preferably, if Figure 1 、 Figure 2 as well as Figure 12As shown, the airtight pressing device includes three airtight mechanisms 410 and three sealing blocks 420; the three airtight mechanisms 410 are, from top to bottom, the first airtight mechanism 410, the second airtight mechanism 410, and the third airtight mechanism 410. For the second airtight mechanism 410, a handle 4112 is provided at the other end of its rotating rod 411; the rotating rods 411 of the three airtight mechanisms 410 are located on the same side of the door leaf 200, and a rotating rod 411 and a rotating drum 412 are also provided on the other side of the door leaf 200. The rotating drum 412 on the other side of the door leaf 200 is connected to the gear 432 of the second airtight mechanism 410; the rotating rod 411 is passed through the outer end of the rotating drum 412 and is fixed by a locking screw; handles 4112 are provided on the rotating rods 411 of the rotating drum 412 at both ends of the second airtight mechanism 410, so that the staff can operate the rotating rod 411 on both sides of the door leaf 200 to rotate.

[0086] Refer to Figure 1 、 Figure 2 、 Figure 21 、 Figure 22 、 Figure 23 、 Figure 24 as well as Figure 25 , the door frame of the laboratory door includes an inverted concave main frame 610 and a sub-frame 620;

[0087] The main frame 610 includes a main top column 611 and a main left column 613 and a main right column 612 connected to the left and right ends thereof. The connections between the main top column 611, the main left column 613 and the main right column 612 are all provided with plug-in structures. The sub-frame 620 includes a sub-top column 621 and a sub-left column 623 and a sub-right column 622 connected to the left and right ends thereof. The connections between the sub-top column 621, the sub-left column 623 and the sub-right column 622 are all provided with plug-in structures.

[0088] The sub-frame 620 is sleeved on the outside of the main frame 610 , and an installation mechanism for inserting and restricting the sub-frame 620 is fixedly provided on the outer wall of the main frame 610 .

[0089] In this embodiment, the main top column 611, the main left column 613 and the main right column 612 are first connected together through a plug-in structure to form a main frame 610, and the secondary top column 621, the secondary left column 623 and the secondary right column 622 are connected together through a plug-in structure to form a secondary frame 620; then the secondary frame 620 is inserted into the mounting structure on the main frame 610, so that the secondary frame 620 is sleeved on the outside of the main frame 610 to form a whole, thereby completing the assembly; after that, the connection between the top column and the main left column 613 and the main right column 612, the connection between the secondary top column 621 and the secondary left column 623 and the secondary right column 622, and the contact between the main frame 610 and the secondary frame 620 can be welded and fixed to form the door frame 100; through the main frame 610 and the secondary frame 6 The plug-in structure on 20 allows the door frame 100 to position itself during assembly, which improves the convenience and accuracy of assembly, and the installation mechanism on the main frame 610 can limit the sub-frame 620 mounted on the main frame 610, allowing the sub-frame 620 to be stably mounted on the outside of the sub-frame 620, and at the same time allowing the sub-frame 620 to limit the main frame 610 inside it, forming a stable and reliable inverted concave structure, which is convenient for assembly and welding, and reduces the auxiliary tools or positioning equipment required for assembly; the main frame 610 and the sub-frame 620 form a double structure, which can enhance the overall strength of the door frame 100, prevent deformation or damage caused by the weight of the door leaf 200 or external forces during use, and improve safety of use.

[0090] Preferably, if Figures 21 to 25 As shown, the mounting structure includes a number of limiting baffles 615 fixed on the main top column 611, the main left column 613 and the main right column 612, and a gap is provided between the limiting baffles 615 and the outer wall of the main frame 610 for the insertion of the auxiliary top column 621, the auxiliary left column 623 or the auxiliary right column 622; through the gap between the limiting baffles 615 and the outer wall of the main frame 610, a precise positioning point and limitation are provided for the insertion of the auxiliary frame 620, ensuring that the auxiliary frame 620 is correctly mounted on the outside of the main frame 610, while simplifying the assembly process and reducing the need for additional tools or fixing methods; the limiting baffles 615 can enhance the connection stability between the main frame 610 and the auxiliary frame 620, facilitate the assembly of the main frame 610 and the auxiliary frame 620, and improve the rigidity and load-bearing capacity of the entire door frame 100 structure.

[0091] Preferably, if Figures 21 to 24 As shown, the limiting baffle 615 is a concave plate, which includes relatively arranged support plates, and an L-shaped adaptation groove 6151 is provided on the support plate; the two support plates on the concave plate directly contact the sub-frame 620, and can firmly clamp the sub-frame 620 between the main frame 610 and the limiting baffle 615. The adaptation groove 6151 on the support plate allows the support plate to more easily undergo a certain elastic deformation when subjected to a force. When the sub-frame 620 is inserted into the gap, the support plate undergoes a certain degree of elastic deformation as the sub-frame 620 is inserted, ensuring that the sub-frame 620 can be successfully inserted into the gap while allowing the support plate to tightly contact the sub-frame 620.

[0092] Preferably, the concave plate is welded to the main top column 611 , the main left column 613 and the main right column 612 , so that the concave plate is firmly connected to the main frame 610 .

[0093] Preferably, if Figures 21 to 25 As shown, the main frame 610 and the secondary frame 620 are fixedly connected to door frames on their sides facing away from each other; the door frame on the main frame 610 includes an extension plate 630 fixedly connected to the main top column 611, the main right column 612 and the main left column 613 respectively; the door frame on the secondary frame 620 includes an extension plate 630 fixedly connected to the secondary top column 621, the secondary right column 622 and the secondary left column 623 respectively; the door frame provides a unified external covering for the main frame 610 and the secondary frame 620, enhancing the overall sense of the door frame 100; the door frame can provide an additional sealing component installation space cavity, which helps to improve the sealing effect between the door and the door frame 100; the door frame can provide protection for the edge of the door frame 100 and reduce damage caused by impact or wear; the door frame can cover the inner structure of the door frame 100 to provide a neater and more beautiful appearance.

[0094] Preferably, if Figures 21 to 25 As shown, the plug-in structure includes a protruding perforated plate 641 and a first plug-in block 642. The perforated plate 641 is provided with corresponding holes for the first plug-in block 642 to be inserted into. The first plug-in block 642 can be easily inserted into the corresponding holes of the perforated plate 641 to achieve precise fit and ensure the stability and alignment of the connection.

[0095] Preferably, if Figure 21 and Figure 24 As shown, the main frame 610 also includes a main base column 614, and the left and right ends of the main base column 614 are respectively connected to the bottom ends of the main left column 613 and the main right column 612; the bottom ends of the main left column 613 and the main right column 612 on the opposite side are provided with a socket 643, and the left and right ends of the main base column 614 are protruding with a second plug-in block 644 that is inserted into the socket 643; through the connection between the main base column 614 and the bottom ends of the main left column 613 and the main right column 612, the overall stability and structural strength of the bottom of the door frame 100 are enhanced, and the socket 643 opened at the bottom ends of the main left column 613 and the main right column 612 allows the second plug-in block 644 to be inserted, so that the main base column 614 can be quickly inserted into the socket 643 of the main left column 613 and the main right column 612, which simplifies the assembly process.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An articulated connector, characterized in that: It includes a first hinge block, a second hinge block, an embedded block and a central rod; The side wall of the second hinge block is provided with a side groove for the embedding block to be embedded, and the side groove is detachably connected to the second hinge block; The central rod includes a hinged stud and two stacked adjustment plates connected to its outer side wall with threads. The first hinge block and the second hinge block are connected to the two ends of the hinged stud for axial movement and circumferential rotation respectively. The two adjustment plates are located between the first hinge block and the second hinge block.

2. An articulated connector according to claim 1, characterized in that: The central rod also includes a central axis and two limiting end plates. The first hinge block and the second hinge block are both provided with connecting through holes for the hinge stud to pass through. The central axis of the hinge stud is provided with a hollow space for the central axis to pass through. The two ends of the central axis are respectively detachably connected to a limiting end plate, and the limiting end plates are in contact with the ends of the first hinge block and the second hinge block facing away from the adjustment plate.

3. An articulated connection according to claim 2, characterized in that: The hinge stud is of two parts, and the two parts of the hinge stud are respectively located in the connecting through-holes of the first hinge block and the second hinge block. The first hinge block and the hinge stud in the connecting through-hole and the second hinge block and the hinge stud in the connecting through-hole are respectively provided with positioning screw holes, and the positioning screw holes are detachably connected with positioning screws.

4. An articulated connector according to claim 1, characterized in that: The outer edge of the adjustment plate is hexagonal.

5. The hinged connection according to claim 2, characterized in that: The top and bottom sides of the central shaft are respectively provided with screw holes threadedly connected to the bolts and studs, and the limiting end plate is provided with through holes for the bolts and studs to pass through.

6. The hinged connection according to claim 1, characterized in that: The side wall of the first hinge block is provided with a screw hole threadedly connected to the bolt stud.

7. The hinged connection according to claim 1, characterized in that: The embedded block is a concave block, which includes a middle block and free blocks protruding from both ends of the middle block. Screw holes connected to bolts are provided on the two side walls of the two free blocks opposite to the side grooves.

8. An articulated connection according to claim 7, characterized in that: The middle block is provided with a plurality of strip grooves for the bolts and studs to pass through.

9. A laboratory door, characterized in that: A hinged connection comprising any one of claims 1 to 8.

10. A laboratory door according to claim 9, characterized in that: It comprises a door frame and a door leaf, wherein the first hinge block is fixedly connected to the door frame, and the embedded block is fixedly connected to the door leaf.

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