Hidden access door and interlayer equipment platform system

Abstract

The utility model relates to a hidden access door and an interlayer equipment platform system. The hidden access door comprises an opening unit, an abutting unit, a first sliding unit, at least one second sliding unit, at least one telescopic unit, at least one elastic unit and a limiting unit. The opening unit is movably arranged in the opening structure; the abutting unit is arranged on the outer side of the opening unit and abuts against the outer side of the partition wall structure. The first sliding unit is arranged on the outer side of the partition wall structure; the second sliding unit is in sliding connection with the first sliding unit; the end of the telescopic unit is rotationally connected with the abutting unit and the second sliding unit. The elastic unit is arranged between the second sliding unit and the abutting unit. The limiting unit is arranged below the abutting unit. The side-hung type equipment door has the advantages that the telescopic unit and the elastic unit are arranged at the top of the abutting unit, so that the abutting unit can be seamlessly attached to the partition wall structure, and the problems that an existing side-hung type equipment door occupies indoor use space and the like are solved.

Description

Technical Field

[0001] This utility model relates to the field of building interior decoration technology, and in particular to a concealed access door and inter-floor equipment platform system. Background Technology

[0002] HVAC equipment in public buildings is relatively large and generally requires dedicated equipment rooms for its placement. Some high-rise public buildings, in order to save on the length of equipment pipes, will locate the equipment rooms on the same floor. Equipment rooms need to be equipped with access doors; existing access doors are generally swing doors, which affect the interior space when opened; sliding doors have poor sealing performance.

[0003] Currently, no effective solutions have been proposed for the problems of existing swing doors occupying indoor space in related technologies. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a concealed access door and inter-floor equipment platform system, thereby solving problems such as the occupation of indoor space by existing swing-type equipment doors.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] Firstly, a concealed access door is provided for use in a building equipment room, comprising:

[0007] An opening unit is movably disposed inside the opening structure and is fitted and connected to the opening structure.

[0008] A clamping unit is disposed on the outside of the opening unit and abuts against the outside of the partition wall structure to seal the gap between the opening unit and the opening structure.

[0009] The first sliding unit is disposed on the outside of the partition wall structure and located above the abutting unit;

[0010] At least one second sliding unit is provided, which is disposed at the bottom of the first sliding unit and is slidably connected to the first sliding unit;

[0011] At least one telescopic unit is provided, which is disposed between the abutting unit and the second sliding unit, and the ends of the telescopic unit are respectively rotatably connected to the abutting unit and the second sliding unit;

[0012] At least one elastic unit is disposed between the second sliding unit and the abutting unit, and is used to provide pressure to the abutting unit so that the abutting unit abuts against the partition wall structure;

[0013] A limiting unit is disposed below the abutting unit and is limited and slidably connected to the bottom end of the abutting unit.

[0014] In some embodiments, the activation unit includes:

[0015] An opening element is movably disposed inside the opening structure and fits into the opening structure; the abutting unit is disposed on the outside of the opening element.

[0016] A sound-insulating element is disposed inside the opening element for sound insulation.

[0017] In some embodiments, the clamping unit includes:

[0018] A clamping element is disposed on the outside of the opening unit and abuts against the outside of the partition structure. The outer side of the clamping element is slidably connected to the end of the elastic unit to seal the gap between the opening unit and the opening structure.

[0019] At least one first rotating element is disposed on the top of the abutting element and is rotatably connected to the telescopic unit;

[0020] At least one first moving element is disposed at the bottom end of the abutting element and is limited and slidably connected to the limiting unit.

[0021] In some embodiments, the first sliding unit includes:

[0022] A first sliding element is disposed on the outside of the partition wall structure and above the abutting unit, and the first sliding element is slidably connected to the second sliding unit;

[0023] A support element is disposed at the end of the first sliding element and connected to the partition wall structure.

[0024] In some embodiments, the second sliding unit includes:

[0025] The second sliding element is disposed at the bottom of the first sliding unit and is slidably connected to the first sliding unit. The bottom end of the second sliding element is connected to the elastic unit.

[0026] The second rotating element is disposed at the bottom of the second sliding element and is rotatably connected to the end of the telescopic unit.

[0027] In some embodiments, the telescopic unit includes:

[0028] A telescopic element is disposed between the abutting unit and the second sliding unit;

[0029] The third rotating element is disposed at the first end of the telescopic element and is rotatably connected to the abutting unit.

[0030] A fourth rotating element is disposed at the second end of the telescopic element and is rotatably connected to the second sliding unit.

[0031] In some embodiments, the elastic element includes:

[0032] A base element, wherein the base element is disposed at the bottom of the second sliding unit;

[0033] An elastic element is disposed between the base element and the clamping unit, and is used to provide pressure to the clamping unit so that the clamping unit abuts against the partition structure.

[0034] In some embodiments, the limiting unit includes:

[0035] At least one third sliding element is provided, which is disposed below the abutting unit and slidably connected to the bottom end of the abutting unit. The axial direction of the third sliding element is perpendicular to the axial direction of the abutting unit.

[0036] A fourth sliding element is disposed below the abutting unit and is limited and slidably connected to the bottom end of the abutting unit. The fourth sliding element is in communication with the third sliding element.

[0037] In some of these embodiments, it also includes:

[0038] A sealing unit is provided around the inner side of the abutment unit to seal the gap between the abutment unit and the partition wall structure.

[0039] Secondly, an inter-layer device platform system is provided, comprising:

[0040] Equipment platform, which is used to house electromechanical equipment;

[0041] A partition wall structure is provided on the inside of the equipment platform to separate the equipment platform from the indoor space;

[0042] An opening structure is provided in the partition wall structure;

[0043] As described in the first aspect, the concealed access door is disposed on the outside of the partition wall structure, the opening unit of the concealed access door is fitted and connected to the opening structure, and the abutting unit of the concealed access door abuts against the outside of the partition wall structure.

[0044] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0045] This utility model discloses a concealed inspection door and inter-floor equipment platform system. By setting a telescopic unit and an elastic unit on the top of the clamping unit, the clamping unit can be seamlessly fitted with the partition wall structure, maintaining airtightness without affecting the indoor space, thus solving the problem of existing swing-type equipment doors occupying indoor space. Attached Figure Description

[0046] Figure 1 This is a schematic diagram (a) of a concealed access door according to an embodiment of the present utility model;

[0047] Figure 2 This is a schematic diagram of the opening unit according to an embodiment of the present utility model;

[0048] Figure 3 This is a schematic diagram of the clamping unit according to an embodiment of the present utility model;

[0049] Figure 4 This is a schematic diagram of the first sliding unit according to an embodiment of the present utility model;

[0050] Figure 5 This is a schematic diagram of the second sliding unit according to an embodiment of the present utility model;

[0051] Figure 6 This is a schematic diagram of the telescopic unit according to an embodiment of the present utility model;

[0052] Figure 7 This is a schematic diagram of an elastic unit according to an embodiment of the present utility model;

[0053] Figure 8 This is a schematic diagram of the limiting unit according to an embodiment of the present utility model;

[0054] Figure 9 This is a schematic diagram (II) of a concealed access door according to an embodiment of the present utility model;

[0055] Figure 10 This is a schematic diagram of an inter-layer equipment platform system according to an embodiment of the present utility model.

[0056] The attached diagrams are labeled as follows: 100, equipment platform; 200, partition wall structure; 300, opening structure; 400, concealed access door;

[0057] 410. Opening unit; 411. Opening element; 412. Sound insulation element;

[0058] 420. Clamping unit; 421. Clamping element; 422. First rotating element; 423. First moving element;

[0059] 430. First sliding unit; 431. First sliding element; 432. Support element;

[0060] 440. Second sliding unit; 441. Second sliding element; 442. Second rotating element;

[0061] 450. Telescopic unit; 451. Telescopic element; 452. Third rotating element; 453. Fourth rotating element;

[0062] 460. Elastic unit; 461. Base component; 462. Elastic element;

[0063] 470. Limiting unit; 471. Third sliding element; 472. Fourth sliding element;

[0064] 480. Sealing unit. Detailed Implementation

[0065] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0067] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0068] Example 1

[0069] This embodiment relates to the concealed access door of this utility model.

[0070] An illustrative embodiment of this utility model, such as Figure 1As shown, a concealed access door 400 for use in a building equipment room includes an opening unit 410, a clamping unit 420, a first sliding unit 430, at least one second sliding unit 440, at least one telescopic unit 450, at least one elastic unit 460, and a limiting unit 470. The opening unit 410 is movably disposed inside the opening structure and fits into the opening structure; the abutting unit 420 is disposed outside the opening unit 410 and abuts against the outside of the partition structure to seal the gap between the opening unit 410 and the opening structure; the first sliding unit 430 is disposed outside the partition structure and above the abutting unit 420; the second sliding unit 440 is disposed at the bottom of the first sliding unit 430 and is slidably connected to the first sliding unit 430; the telescopic unit 450 is disposed between the abutting unit 420 and the second sliding unit 440, and the ends of the telescopic unit 450 are rotatably connected to the abutting unit 420 and the second sliding unit 440 respectively; the elastic unit 460 is disposed between the second sliding unit 440 and the abutting unit 420 to provide pressure to the abutting unit 420 so that the abutting unit 420 abuts against the partition structure; and the limiting unit 470 is disposed below the abutting unit 420 and is limited and slidably connected to the bottom end of the abutting unit 420.

[0071] In some embodiments, there are two second sliding units 440. The two second sliding units 440 are spaced apart at the bottom of the first sliding unit 430.

[0072] The number of telescopic units 450 matches the number of second sliding units 440. Generally, the number of telescopic units 450 is equal to the number of second sliding units 440, that is, there is a one-to-one correspondence between the telescopic units 450 and the second sliding units 440.

[0073] The number of elastic units 460 matches the number of second sliding units 440. Generally, the number of elastic units 460 is equal to the number of second sliding units 440, that is, there is a one-to-one correspondence between elastic units 460 and second sliding units 440.

[0074] like Figure 2 As shown, the opening unit 410 includes an opening element 411 and a sound insulation element 412. The opening element 411 is movably disposed inside the opening structure and is fitted and connected to the opening structure. A pressing unit 420 is disposed on the outside of the opening element 411. The sound insulation element 412 is disposed inside the opening element 411 and is used for sound insulation.

[0075] In some of these embodiments, the opening element 411 has a rectangular cross-section.

[0076] In some of these embodiments, the opening element 411 is an access door, including but not limited to a metal door panel.

[0077] In some embodiments, the connection method between the sound insulation element 412 and the opening element 411 includes, but is not limited to, adhesive bonding and screw connection.

[0078] The dimensions of the sound insulation element 412 are matched with the dimensions of the opening element 411. Generally, the height of the sound insulation element 412 is equal to the height of the opening element 411, the width of the sound insulation element 412 is equal to the width of the opening element 411, and the thickness of the sound insulation element 412 is less than the thickness of the opening element 411.

[0079] In some embodiments, the sound insulation element 412 is a sound insulation board, including but not limited to polystyrene foam board, gypsum board, calcium silicate board, etc.

[0080] like Figure 3 As shown, the clamping unit 420 includes a clamping element 421, at least one first rotating element 422, and at least one first moving element 423. The clamping element 421 is disposed on the outside of the opening unit 410 and abuts against the outside of the partition structure. The outer surface of the clamping element 421 is slidably connected to the end of the elastic unit 460 to seal the gap between the opening unit 410 and the opening structure. The first rotating element 422 is disposed on the top of the clamping element 421 and is rotatably connected to the telescopic unit 450. The first moving element 423 is disposed on the bottom end of the clamping element 421 and is limited and slidably connected to the limiting unit 470.

[0081] Specifically, the abutting element 421 is disposed on the outside of the opening element 411.

[0082] In some embodiments, the connection method between the clamping element 421 and the opening element 411 includes, but is not limited to, integral molding and screw connection.

[0083] The dimensions of the abutting element 421 are matched with the dimensions of the opening element 411. Generally, the width of the abutting element 421 is greater than the width of the opening element 411, and the height of the abutting element 421 is greater than the height of the opening element 411.

[0084] In some embodiments, the center of the abutting element 421 is coaxially arranged with the center of the opening element 411.

[0085] In some of these embodiments, the cross-section of the abutment element 421 is rectangular.

[0086] In some of these embodiments, the abutting element 421 is a metal door panel.

[0087] In some embodiments, the connection between the first rotating element 422 and the abutting element 421 includes, but is not limited to, screw connection and welding.

[0088] The number of first rotating elements 422 matches the number of second sliding units 440. Generally, the number of first rotating elements 422 is equal to the number of second sliding units 440, that is, the first rotating elements 422 and the second sliding units 440 correspond one-to-one.

[0089] The dimensions of the first rotating element 422 are matched with the dimensions of the abutting element 421. Generally, the radial dimension (e.g., diameter) of the first rotating element 422 is smaller than the thickness of the abutting element 421.

[0090] In some of these embodiments, the first rotating element 422 has a circular cross-section.

[0091] In some of these embodiments, the first rotating element 422 is a first rotating shaft.

[0092] In some embodiments, the connection between the first moving element 423 and the clamping element 421 includes, but is not limited to, a screw connection.

[0093] Several first moving elements 423 are spaced apart along the axial direction of the abutting element 421.

[0094] In some embodiments, the first moving element 423 includes a connecting seat, a longitudinal pulley, and a transverse pulley. The connecting seat is disposed at the bottom end of the abutting element 421; the longitudinal pulley is disposed at the bottom of the connecting seat for allowing the abutting element 421 to slide in the horizontal direction; the transverse pulley is disposed between the connecting seat and the longitudinal pulley and is rotatably connected to the connecting seat, and is slidably and limitingly connected to the limiting unit 470.

[0095] In some of these embodiments, the first moving element 423 is a pulley system.

[0096] like Figure 4 As shown, the first sliding unit 430 includes a first sliding element 431 and a support element 432. The first sliding element 431 is disposed on the outside of the partition structure and above the abutment unit 420, and is slidably connected to the second sliding unit 440; the support element 432 is disposed at the end of the first sliding element 431 and is connected to the partition structure.

[0097] Specifically, the first sliding element 431 is located above the abutting element 421.

[0098] The dimensions of the first sliding element 431 are matched with the dimensions of the abutting element 421. Generally, the axial dimension (e.g., length) of the first sliding element 431 is greater than the axial dimension (e.g., length) of the abutting element 421.

[0099] In some embodiments, the first sliding element 431 has a C-shaped cross-section. Specifically, the first sliding element 431 includes a first sliding member and a second sliding member. The first sliding member is disposed above the abutting element 421 and is slidably connected to the second sliding unit 440, and the end of the first sliding member is connected to the support element 432; the second sliding member is disposed through the bottom of the first sliding member and is slidably connected to the second sliding unit 440.

[0100] The dimensions of the second slider are matched with those of the first slider. Generally, the radial dimension of the second slider is smaller than that of the first slider.

[0101] In some of these embodiments, the first sliding element 431 includes, but is not limited to, a metal groove.

[0102] In some of these embodiments, the support element 432 is connected to the partition wall structure via a metal embedded part.

[0103] In some embodiments, the connection between the support element 432 and the first sliding element 431 includes, but is not limited to, welding and screw connection.

[0104] In some of these embodiments, the support element 432 includes, but is not limited to, a support keel.

[0105] like Figure 5 As shown, the second sliding unit 440 includes a second sliding element 441 and a second rotating element 442. The second sliding element 441 is disposed at the bottom of the first sliding unit 430 and is slidably connected to the first sliding unit 430, and the bottom end of the second sliding element 441 is connected to the elastic unit 460; the second rotating element 442 is disposed at the bottom of the second sliding element 441 and is rotatably connected to the end of the telescopic unit 450.

[0106] Specifically, the second sliding element 441 is disposed at the bottom of the first sliding element 431 and is slidably connected to the first sliding element 431; the second rotating element 442 is slidably connected to the first sliding element 431.

[0107] More specifically, the second sliding element 441 is disposed inside the first sliding member and is slidably connected to the first sliding member; the second rotating element 442 is slidably connected to the second sliding member.

[0108] The dimensions of the second sliding element 441 are matched with the dimensions of the first sliding element 431. Generally, the radial dimension (e.g., width, height) of the second sliding element 441 is smaller than the radial dimension (e.g., width, height) of the inner contour of the first sliding element, and the width of the second sliding element 441 is larger than the radial dimension (e.g., width) of the second sliding element.

[0109] In some of these embodiments, the second sliding element 441 includes, but is not limited to, a slider or a pulley.

[0110] In some embodiments, the connection between the second rotating element 442 and the second sliding element 441 includes, but is not limited to, screw connection and welding.

[0111] The dimensions of the second rotating element 442 are matched with the dimensions of the first sliding element 431. Generally, the radial dimension (e.g., diameter) of the second rotating element 442 is smaller than the width of the second sliding element.

[0112] In some of these embodiments, the second rotating element 442 has a circular cross-section.

[0113] In some of these embodiments, the longitudinal section of the second rotating element 442 is inverted T-shaped.

[0114] In some of these embodiments, the second rotating element 442 is a second rotating shaft.

[0115] like Figure 6 As shown, the telescopic unit 450 includes a telescopic element 451, a third rotating element 452, and a fourth rotating element 453. The telescopic element 451 is disposed between the pressing unit 420 and the second sliding unit 440; the third rotating element 452 is disposed at the first end of the telescopic element 451 and is rotatably connected to the pressing unit 420; the fourth rotating element 453 is disposed at the second end of the telescopic element 451 and is rotatably connected to the second sliding unit 440.

[0116] Specifically, the telescopic element 451 is disposed between the abutting element 421 and the second rotating element 442; the third rotating element 452 is rotatably connected to the first rotating element 422; and the fourth rotating element 453 is rotatably connected to the second rotating element 442.

[0117] In some of these embodiments, the telescopic element 451 is a connecting rod.

[0118] In some embodiments, the third rotating element 452 is disposed through the upper and lower surfaces of the telescopic element 451.

[0119] In some of these embodiments, the cross-section of the third rotating element 452 is annular.

[0120] In some of these embodiments, the third rotating element 452 is the first rotating hole.

[0121] In some embodiments, the fourth rotating element 453 is disposed through the upper and lower surfaces of the telescopic element 451.

[0122] In some of these embodiments, the cross-section of the fourth rotating element 453 is annular.

[0123] In some of these embodiments, the fourth rotating element 453 is a second rotating hole.

[0124] like Figure 7 As shown, the elastic unit 460 includes a base element 461 and an elastic element 462. The base element 461 is disposed at the bottom of the second sliding unit 440; the elastic element 462 is disposed between the base element 461 and the pressing unit 420, and is used to provide pressure to the pressing unit 420 so that the pressing unit 420 abuts against the partition structure.

[0125] Specifically, the base element 461 is disposed at the bottom of the second rotating element 442; the elastic element 462 is disposed between the base element 461 and the abutting element 421.

[0126] In some embodiments, the connection between the base element 461 and the second rotating element 442 includes, but is not limited to, welding and screw connection.

[0127] In some of these embodiments, the base element 461 includes, but is not limited to, metal corner brackets.

[0128] In some embodiments, the elastic element 462 is disposed at the end of the base element 461.

[0129] In some of these embodiments, the elastic element 462 includes, but is not limited to, a spring.

[0130] like Figure 8 As shown, the limiting unit 470 includes at least one third sliding element 471 and a fourth sliding element 472. The third sliding element 471 is disposed below the abutting unit 420 and is slidably connected to the bottom end of the abutting unit 420. The axial direction of the third sliding element 471 is perpendicular to the axial direction of the abutting unit 420. The fourth sliding element 472 is disposed below the abutting unit 420 and is limitedly and slidably connected to the bottom end of the abutting unit 420. The fourth sliding element 472 communicates with the third sliding element 471.

[0131] Specifically, the third sliding element 471 is disposed below the abutting element 421 and is slidably connected to the first moving element 423; the fourth sliding element 472 is disposed below the abutting element 421 and is limited and slidably connected to the first sliding element 431.

[0132] More specifically, the third sliding element 471 is slidably connected to the transverse pulley; the fourth sliding element 472 is limited and slidably connected to the transverse pulley.

[0133] The first end of the third sliding element 471 abuts against the outer side of the partition wall structure.

[0134] The number of third sliding elements 471 matches the number of first moving elements 423. Generally, the number of third sliding elements 471 is equal to the number of first moving elements 423, that is, there is a one-to-one correspondence between the third sliding elements 471 and the first moving elements 423.

[0135] The dimensions of the third sliding element 471 are matched with the dimensions of the opening element 411. Generally, the axial dimension (e.g., length) of the third sliding element 471 is greater than the thickness of the opening element 411.

[0136] The dimensions of the third sliding element 471 are matched with the dimensions of the first moving element 423. Generally, the inner contour width of the third sliding element 471 is equal to the length of the first moving element 423.

[0137] In some of these embodiments, the third sliding element 471 is the first slide.

[0138] In some of these embodiments, the fourth sliding element 472 is integrally formed with the third sliding element 471.

[0139] The dimensions of the fourth sliding element 472 match those of the first sliding element 431. Generally, the length of the fourth sliding element 472 is equal to the length of the first sliding element 431.

[0140] The dimensions of the fourth sliding element 472 are matched with the dimensions of the first moving element 423. Generally, the inner contour width of the fourth sliding element 472 is equal to the diameter of the transverse pulley.

[0141] In some of these embodiments, the fourth sliding element 472 is a second slide.

[0142] The method of using this utility model is as follows:

[0143] The advantage of this utility model is that by setting a telescopic unit and an elastic unit on the top of the clamping unit, the clamping unit can be seamlessly fitted to the partition wall structure, maintaining airtightness without affecting the indoor space, thus solving the problem of existing swing-type equipment doors occupying indoor space.

[0144] Example 2

[0145] This embodiment is a supplementary embodiment to Embodiment 1.

[0146] like Figure 9 As shown, the concealed access door 400 also includes a sealing unit 480. The sealing unit 480 is disposed around the inner side of the abutment unit 420 and is used to seal the gap between the abutment unit 420 and the partition structure.

[0147] Specifically, the sealing unit 480 is disposed around the inner side of the abutment element 421 to seal the gap between the abutment unit 420 and the partition structure.

[0148] In some embodiments, the connection between the sealing unit 480 and the abutment element 421 includes, but is not limited to, adhesive bonding.

[0149] The dimensions of the sealing unit 480 are matched with the dimensions of the abutment element 421. Generally, the radial dimensions (such as width and height) of the outer contour of the sealing unit 480 are equal to the radial dimensions (such as width and height) of the abutment element 421.

[0150] The dimensions of the sealing unit 480 are matched with the dimensions of the opening element 411. Generally, the radial dimension (e.g., width, height) of the inner contour of the sealing unit 480 is equal to the radial dimension (e.g., width, height) of the opening element 411.

[0151] In some of these embodiments, the sealing unit 480 has an annular rectangular cross-section.

[0152] In some of these embodiments, the sealing unit 480 is made of a flexible material, including but not limited to rubber.

[0153] In some of these embodiments, the sealing unit 480 is a rubber sealing gasket.

[0154] The advantage of this embodiment is that by setting a sealing unit, the sealing performance of the concealed access door is improved, and the impact of noise in the equipment room on the indoor space is reduced.

[0155] Example 3

[0156] This embodiment relates to the interlayer equipment platform system of this utility model.

[0157] like Figure 10 As shown, an inter-floor equipment platform 100 system includes an equipment platform 100, a partition wall structure 200, an opening structure 300, and a concealed access door 400 as described in Embodiments 1 and 2. The equipment platform 100 is used to house electromechanical equipment; the partition wall structure 200 is located inside the equipment platform 100 to separate the equipment platform 100 from the interior space; the opening structure 300 is located on the partition wall structure 200; the concealed access door 400 is located on the outside of the partition wall structure 200, with its opening unit 410 fitting into the opening structure 300 and its abutting unit 420 abutting against the outside of the partition wall structure 200.

[0158] In some of these embodiments, the equipment platform 100 is a reinforced concrete floor slab.

[0159] In some embodiments, the partition structure 200 includes, but is not limited to, a lightweight concrete partition.

[0160] The dimensions of the opening structure 300 are matched with the dimensions of the opening element 411. Generally, the radial dimensions (such as height and width) of the opening structure 300 are equal to the radial dimensions (such as height and width) of the opening element 411.

[0161] In some of these embodiments, the cross-section of the opening structure 300 is rectangular.

[0162] In some of these embodiments, the opening structure 300 is an access opening.

[0163] The advantages of this utility model are basically the same as those of Embodiment 1 and Embodiment 2, so they will not be repeated here.

[0164] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concealed access door for use in a building equipment room, characterized in that, include: An opening unit is movably disposed inside the opening structure and is fitted and connected to the opening structure. A clamping unit is disposed on the outside of the opening unit and abuts against the outside of the partition wall structure to seal the gap between the opening unit and the opening structure. The first sliding unit is disposed on the outside of the partition wall structure and located above the abutting unit; At least one second sliding unit is provided, which is disposed at the bottom of the first sliding unit and is slidably connected to the first sliding unit; At least one telescopic unit is provided, which is disposed between the abutting unit and the second sliding unit, and the ends of the telescopic unit are respectively rotatably connected to the abutting unit and the second sliding unit; At least one elastic unit is disposed between the second sliding unit and the abutting unit, and is used to provide pressure to the abutting unit so that the abutting unit abuts against the partition wall structure; A limiting unit is disposed below the abutting unit and is limited and slidably connected to the bottom end of the abutting unit.

2. The concealed access door according to claim 1, characterized in that, The activation unit includes: An opening element is movably disposed inside the opening structure and fits into the opening structure; the abutting unit is disposed on the outside of the opening element. A sound-insulating element is disposed inside the opening element for sound insulation.

3. The concealed access door according to claim 1, characterized in that, The clamping unit includes: A clamping element is disposed on the outside of the opening unit and abuts against the outside of the partition structure. The outer side of the clamping element is slidably connected to the end of the elastic unit to seal the gap between the opening unit and the opening structure. At least one first rotating element is disposed on the top of the abutting element and is rotatably connected to the telescopic unit; At least one first moving element is disposed at the bottom end of the abutting element and is limited and slidably connected to the limiting unit.

4. The concealed access door according to claim 1, characterized in that, The first sliding unit includes: A first sliding element is disposed on the outside of the partition wall structure and above the abutting unit, and the first sliding element is slidably connected to the second sliding unit; A support element is disposed at the end of the first sliding element and connected to the partition wall structure.

5. The concealed access door according to claim 1, characterized in that, The second sliding unit includes: The second sliding element is disposed at the bottom of the first sliding unit and is slidably connected to the first sliding unit. The bottom end of the second sliding element is connected to the elastic unit. The second rotating element is disposed at the bottom of the second sliding element and is rotatably connected to the end of the telescopic unit.

6. The concealed access door according to claim 1, characterized in that, The telescopic unit includes: A telescopic element is disposed between the abutting unit and the second sliding unit; The third rotating element is disposed at the first end of the telescopic element and is rotatably connected to the abutting unit. A fourth rotating element is disposed at the second end of the telescopic element and is rotatably connected to the second sliding unit.

7. The concealed access door according to claim 1, characterized in that, The elastic unit includes: A base element, wherein the base element is disposed at the bottom of the second sliding unit; An elastic element is disposed between the base element and the clamping unit, and is used to provide pressure to the clamping unit so that the clamping unit abuts against the partition structure.

8. The concealed access door according to claim 1, characterized in that, The limiting unit includes: At least one third sliding element is provided, which is disposed below the abutting unit and slidably connected to the bottom end of the abutting unit. The axial direction of the third sliding element is perpendicular to the axial direction of the abutting unit. A fourth sliding element is disposed below the abutting unit and is limited and slidably connected to the bottom end of the abutting unit. The fourth sliding element is in communication with the third sliding element.

9. The concealed access door according to any one of claims 1 to 8, characterized in that, Also includes: A sealing unit is provided around the inner side of the abutment unit to seal the gap between the abutment unit and the partition wall structure.

10. An inter-layer equipment platform system, characterized in that, include: Equipment platform, which is used to house electromechanical equipment; A partition wall structure is provided on the inside of the equipment platform to separate the equipment platform from the indoor space; An opening structure is provided in the partition wall structure; The concealed access door as described in any one of claims 1 to 9, wherein the concealed access door is disposed on the outside of the partition wall structure, the opening unit of the concealed access door is fitted and connected to the opening structure, and the abutting unit of the concealed access door abuts against the outside of the partition wall structure.

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