An access panel structure for preventing loosening due to negative pressure

Abstract

The application provides a kind of access panel structure for preventing loosening under negative pressure, relating to decoration design technical field, wherein the access panel structure for preventing loosening under negative pressure includes ceiling board, access cover plate, slide rail frame and locking device, the slide rail frame is arranged above the ceiling board, the locking device is arranged above the access cover plate, the locking device is slidably connected with the slide rail frame, the locking device includes shell and pressing block, the slide rail is arranged on the slide rail frame, and the shell and the pressing block are located on both sides of the slide rail frame.The application is simple to operate, quickly assembled and installed, does not need to groove on site for the ceiling board, has stable structure, does not shake after locking, the surface between the access panel and the ceiling board is closed and smooth, has better aesthetic degree, and can effectively prevent loosening of the access panel under negative pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of decoration design.

[0002] More particularly, the present invention relates to an access panel structure that prevents negative pressure loosening. Background Art

[0003] Currently, residential ceiling inspection openings are generally classified into two types: detachable and modular. The first type of access panel is susceptible to damage. While the second type addresses the vulnerability of the detachable access panel, it suffers from poor concealment and requires a larger overhead space. When the indoor pressure is greater than the internal pressure of the ceiling, negative pressure occurs, pushing the access panel upward. For example, Chinese Patent CN112282176A describes a removable inspection opening structure for an assembled ceiling, comprising a ceiling panel and a flap. The ceiling panel is provided with an inspection opening, the flap is hinged within the inspection opening, and symmetrically arranged rotating shafts are provided on opposite sides of the flap. The rotating shafts are slidably connected to a slide groove on the side wall of the inspection opening. The slide groove is L-shaped and includes a first track and a second track. The first track extends inward from the bottom surface of the ceiling panel, and the second track is perpendicular to the first track. The flap is fixed to the ceiling panel via a locking mechanism. The locking mechanism includes a locking tongue and an operating handle. The locking tongue is elastically connected to the flap, and the operating handle is threadedly connected to the flap. The end of the operating handle abuts against a groove in the locking tongue. The contact surface between the operating handle and the groove is an inclined surface, and the end of the locking tongue is inserted into a corresponding socket in the ceiling panel. This invention provides a removable inspection opening structure for an assembled ceiling, allowing for quick assembly and disassembly of the flap, preventing the hinged structure of the flap from interfering with inspection work.

[0004] However, its locking mechanism requires slotting on the side of the ceiling panel, which is difficult for thinner ceiling panels and will reduce the strength of the ceiling panel. Under negative pressure, the part where the lock tongue contacts the slot of the ceiling panel is locally stressed, and the lock tongue can easily damage the ceiling panel. In order to facilitate the lock tongue to smoothly enter the slot on the side of the ceiling panel, the thickness of the slot must be greater than the thickness of the lock tongue. The larger the gap, the easier it is for the lock tongue to enter the slot to complete the locking step. However, the larger the gap, the greater the shaking between the inspection port cover and the ceiling panel in the locked state, which will cause the inspection port cover and the ceiling panel to have uneven surfaces in a static state. Under negative pressure, the gap between the inspection port cover and the ceiling panel will allow the inspection port cover to have a certain shaking space. Under negative pressure, the inspection port cover and the lock tongue will constantly collide with the ceiling panel and produce abnormal noise. Summary of the Invention

[0005] The purpose of the present invention is to provide an inspection port panel structure that is simple to operate, quick to assemble and install, does not require on-site grooving of the ceiling panel, has a stable structure, does not shake after locking, and has a smooth closure between the inspection port panel and the surface of the ceiling panel, which has better aesthetics and can effectively prevent the inspection port panel from loosening due to negative pressure.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A maintenance port panel structure that prevents loosening due to negative pressure includes a ceiling panel, an maintenance port cover, a slide rail frame and a locking device. The slide rail frame is arranged above the ceiling panel, and the locking device is arranged above the maintenance port cover. The locking device is slidably connected to the slide rail frame. The locking device includes a shell and a pressing block. The slide rail frame is provided with a slide rail, and the shell and the pressing block are located on both sides of the slide rail frame.

[0008] As a preferred embodiment of the present invention, a worm and a screw are provided in the housing, the worm and the screw are perpendicular to each other in space, a worm wheel is provided at the end of the screw near the worm, and the screw is connected to the worm via the worm wheel.

[0009] As a preferred embodiment of the present invention, a telescopic block is provided at the end of the screw away from the worm, a screw channel is provided in the telescopic block, an internal thread is provided in the screw channel, the screw and the screw channel are connected through the internal thread, and only a part of the screw is located in the screw channel.

[0010] As a preferred embodiment of the present invention, a pressing block is provided at the end of the telescopic block away from the screw, and the pressing block includes a connecting portion and a pressing block, and the connecting portion and the pressing block are connected by a sliding portion.

[0011] As a preferred embodiment of the present invention, the connecting portion is provided with a thread for connecting to the screw channel, the connecting portion is located in the screw channel, and the sliding portion is slidably connected to the slide rail.

[0012] As a preferred embodiment of the present invention, a worm channel is provided at the bottom of the shell, a telescopic channel is provided on the surface of the shell close to the slide rail frame, the worm is located in the worm channel, and the telescopic block is located in the telescopic channel.

[0013] As a preferred embodiment of the present invention, an adjusting cap is provided at the bottom of the worm, and a positioning block is provided at the end of the worm away from the adjusting cap. The positioning block is a cylinder, the diameter of the positioning block is larger than the diameter of the worm, and the worm is connected to the top of the worm channel through the positioning block.

[0014] As a preferred embodiment of the present invention, the telescopic block is slidably connected to the telescopic channel, a limit block is provided on the telescopic block, a slide groove is provided on the telescopic channel, the limit block is located in the slide groove, and the limit block is slidably connected to the slide groove.

[0015] As a preferred embodiment of the present application, the bottom of the adjusting cap is provided with a wrench interface.

[0016] As a preferred embodiment of the present application, the shell is provided with mounting pieces on both sides for connecting the access cover plate, and the mounting pieces are connected with the access cover plate by screws.

[0017] Since the locking device is provided, the loosening of the access cover plate caused by negative pressure can be effectively prevented.

[0018] Since the locking device comprises a shell and a pressing block, a slide rail is arranged on the slide rail frame, the shell and the pressing block are arranged on both sides of the slide rail frame, and the slide rail frame is clamped by the shell and the pressing block to lock the access cover plate, so that a slot does not need to be opened on the suspended ceiling plate, and the suspended ceiling plate can be handled on site.

[0019] Since the telescopic block is internally provided with a screw channel, the screw channel is internally provided with an internal thread, the pressing block comprises a connecting portion and a sliding portion, the connecting portion is connected with the pressing block through the sliding portion, the pressing block is connected with the telescopic block through the thread, the telescopic block is located in the telescopic channel of the shell of the locking device, the locking device and the pressing block are placed on both sides of the slide rail frame, the connecting portion is passed through the slide rail, the connecting portion is inserted into the screw channel, the pressing block is rotated, the pressing block is connected with the screw channel through the thread, and the locking device and the slide rail frame can be connected, so that the installation is convenient and fast.

[0020] Since the shell of the locking device is provided with mounting pieces on both sides for connecting the access cover plate, and the mounting pieces are connected with the access cover plate by screws, quick assembly and installation can be achieved.

[0021] Since the shell is internally provided with a worm and a screw, the worm and the screw are perpendicular to each other in space, the end of the screw close to the worm is provided with a worm wheel, the screw is connected with the worm through the worm wheel, the bottom of the shell is provided with a worm channel, the surface of the shell close to the slide rail frame is provided with a telescopic channel, the worm is located in the worm channel, the telescopic block is located in the telescopic channel, the telescopic block is slidably connected with the telescopic channel, the telescopic block is provided with a limiting block, the telescopic channel is provided with a sliding groove, the limiting block is located in the sliding groove, and the limiting block is slidably connected with the sliding groove, the bottom of the worm is provided with a wrench interface, a wrench can be inserted into the wrench interface, the worm is rotated, the screw is rotated through the worm and worm wheel mechanism, the telescopic block is telescoped in the telescopic channel, the pressing block is close to or away from the shell, the slide rail frame is clamped or released, the worm and worm wheel have the function of speed reduction and torque increase, a smaller force is used to rotate the worm, the pressing block and the shell can generate a larger pressure on the slide rail frame, sufficient friction force is generated to fix the access cover plate, and the structure is stable, the locking device does not shake after locking, the closure between the access and the surface of the suspended ceiling plate can be ensured to be flat, and the operation is simple.

[0022] The beneficial effects of the inspection port panel structure for preventing loosening due to negative pressure of the present invention are: simple operation, quick assembly and installation, no need for on-site grooving of the ceiling panel, stable structure, no shaking after locking, smooth closure between the inspection port panel and the surface of the ceiling panel, better aesthetics, and the ability to effectively prevent the inspection port panel from loosening due to negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a maintenance access panel structure for preventing negative pressure loosening according to the present invention;

[0024] Figure 2 This is a front view of an access panel structure for preventing negative pressure loosening according to the present invention;

[0025] Figure 3 A left view of the access panel structure of the present invention to prevent loosening under negative pressure;

[0026] Figure 4 This is a schematic diagram of the shell structure of a maintenance port panel structure for preventing negative pressure loosening according to the present invention;

[0027] Figure 5 This is a schematic structural diagram of a locking device for a maintenance access panel structure that prevents loosening due to negative pressure according to the present invention;

[0028] Figure 6 A top view of a locking device for a maintenance access panel structure that prevents loosening due to negative pressure according to the present invention;

[0029] Figure 7 A cross-sectional view of a locking device for a maintenance access panel structure that prevents loosening under negative pressure according to the present invention;

[0030] In the figure: 1. Ceiling panel; 2. Inspection port cover; 3. Slide rail frame; 31. Slide rail; 4. Locking device; 41. Housing; 411. Telescopic channel; 412. Slide groove; 413. Worm channel; 414. Mounting plate; 42. Worm; 421. Adjusting cap; 422. Wrench interface; 423. Positioning block; 43. Screw; 431. Worm gear; 44. Telescopic block; 441. Limit block; 442. Screw channel; 45. Pressing block; 451. Connecting part; 452. Sliding part; 453. Pressing block; 5. Wrench. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of modules and steps set forth in these embodiments and the steps do not limit the scope of the present invention.

[0033] At the same time, it should be understood that for the convenience of description, the processes in the drawings are not just performed individually, but multiple steps are performed in an intersecting manner.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0035] Technologies, methods, and systems known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be considered part of the authorization specification.

[0036] Example 1: Figures 1 to 7 The figure is only one of the embodiments of the present invention, a structure for preventing negative pressure loosening of an inspection panel, including a ceiling panel 1, an inspection cover 2, a slide rail frame 3 and a locking device 4, wherein the slide rail frame 3 is arranged above the ceiling panel 1, and the locking device is arranged above the inspection cover 2. The locking device 4 is slidably connected to the slide rail frame 3, and the locking device 4 includes a shell 41 and a pressing block 45. The slide rail frame 3 is provided with a slide rail 31, and the shell 41 and the pressing block 45 are located on both sides of the slide rail frame 3.

[0037] A worm 42 and a screw 43 are disposed within the housing 41. The worm 42 and the screw 43 are spatially perpendicular to each other. A worm gear 431 is disposed at the end of the screw 43 near the worm 42, and the screw 43 is connected to the worm 42 via the worm gear 431. A telescopic block 44 is disposed at the end of the screw 43 away from the worm 42. A screw channel 442 is disposed within the telescopic block 44. The screw channel 442 is internally threaded, and the screw 43 and the screw channel 442 are connected via the internal threads. Only a portion of the screw 43 is located within the screw channel 442. A pressing block 45 is disposed at the end of the telescopic block 44 away from the screw 43. The pressing block 45 includes a connecting portion 451 and a pressing block 453. The connecting portion 451 and the pressing block 453 are connected by a sliding portion 452. The connecting portion 451 is provided with threads for connecting to the screw channel 442. The connecting portion 451 is located within the screw channel 442, and the sliding portion 452 is slidably connected to the slide rail 31. A worm channel 413 is provided at the bottom of the housing 41. A telescopic channel 411 is provided on the surface of the housing 41 near the slide rail frame 3. The worm 42 is located within the worm channel 413, and the telescopic block 44 is located within the telescopic channel 411. An adjustment cap 421 is provided at the bottom of the worm 42. A positioning block 423 is provided at the end of the worm 42 away from the adjustment cap 421. The positioning block 423 is cylindrical and has a diameter larger than that of the worm 42. The worm 42 is connected to the top of the worm channel 413 via the positioning block 423. The telescopic block 44 is slidably connected to the telescopic channel 411. A limit block 441 is provided on the telescopic block 44, and a slide groove 412 is provided on the telescopic channel 411. The limit block 441 is located within the slide groove 412 and is slidably connected to the slide groove 412. A wrench interface 422 is provided at the bottom of the adjustment cap 421. Mounting tabs 414 for connecting to the access panel 2 are provided on both sides of the housing 41. The mounting tabs 414 are connected to the access panel 2 via screws.

[0038] During installation, install the slide rail frame 3 to the ceiling panel 1, open a hole in the inspection port cover 2 that is the same shape as the bottom of the locking device 4 shell 41, insert the bottom of the locking device 4 into the hole, let the mounting pieces 414 on both sides of the shell 41 fit with the top surface of the inspection port cover 2, fix the mounting pieces 414 to the inspection port cover 2 with screws, align the screw channel 442 on the locking device 4 with the slide rail 31 of the slide rail frame 3, and insert the clamping block 45 from the other side of the slide rail frame 3, let the connecting part 451 and the sliding part 452 pass through the slide rail 31, and the connecting part 451 is connected to the screw channel 442 through a thread, so that the sliding part 452 of the clamping block 45 is located on the slide rail 31, and the clamping block 453 of the clamping block 45 and the shell 41 are located on both sides of the slide rail frame 3.

[0039] When it is necessary to open the inspection port cover 3, the operator uses an ordinary wrench 5 to insert it from the bottom of the inspection port cover 2 into the wrench interface 422 of the adjusting cap 421 at the bottom of the locking device 4, where the wrench interface 422 is a groove corresponding to the hexagonal wrench. Turn the wrench 5 to rotate the adjusting cap 421 and the worm 42 as a whole. The multiple threads on the worm 42 drive the worm wheel 431 to rotate, and the worm wheel 431 drives the screw 43 to rotate. The end of the screw 43 is located in the screw channel 442 of the telescopic block 4, and the telescopic block 44 is located in the telescopic channel 411 of the housing 41. The limit block 441 on the telescopic block 44 is located in the slide groove 412 on the telescopic channel 411. The limit block 441 and the slide groove 412 limit the rotation of the telescopic block 44 around the axis in the telescopic channel 411, so that the telescopic block 44 can only slide along the axis direction in the telescopic channel 411. Therefore, when the screw 43 rotates, the thread between the screw 43 and the screw channel 442 will cause the telescopic block 44 to move away from the worm gear 431 in the telescopic channel 411. When the pressing block 453 of the pressing block 45 is moved in the direction away from the slide rail frame 3, the shell 41 and the pressing block 453 exert no pressure on the slide rail frame 3, there is no friction between the shell 41 and the slide rail frame 3, and there is no friction between the pressing block 453 and the slide rail frame 3. The sliding portion 452 can slide along the slide rail 31 in the slide rail 31. The shell 41 and the pressing block 453 prevent the sliding portion 452 from falling off from the slide rail 31 on both sides of the slide rail frame 3. The operator can open the inspection port by pushing the inspection port cover 3 in the direction of the slide rail 31. When the inspection port cover 3 needs to be locked after closing the inspection port cover 3, the adjusting cap 421 is rotated in the opposite direction with the wrench 5 to move the pressure block 453 toward the housing 41 until the pressure block 453 and the housing 41 clamp the slide rail frame 3. The pressure block 453 and the housing 41 exert sufficient pressure on the slide rail frame 3. Due to the use of a worm gear mechanism, the worm gear has self-locking properties. Without rotating the worm 42, the pressure block 45 will not move relative to the housing 41 under external force. Therefore, the pressure exerted by the pressure block 453 and the housing 41 on the slide rail frame 3 will not decay, thereby generating sufficient pressure. When the indoor pressure is greater than the pressure above the inspection port cover plate 2, that is, under negative pressure, the inspection port cover plate 2 will be subjected to upward pressure. Since the locking device 4 is fixedly connected to the inspection port cover plate 2 by installing screws, there is sufficient friction between the locking device 4 and the slide rail frame 3, and the locking device 4 and the slide rail frame 3 will not move or loosen relative to each other. The slide rail frame 3 is fixed to the ceiling panel 1 by screws, so the inspection port cover plate 2 will not loosen or shake under negative pressure.

[0040] The inspection port panel structure for preventing loosening due to negative pressure of the present invention is simple to operate and can be quickly assembled and installed without on-site grooving of the ceiling panel. The structure is stable and there is no shaking after locking. The inspection port panel and the surface of the ceiling panel are closed and flat, which has better aesthetics and can effectively prevent the inspection port panel from loosening due to negative pressure.

[0041] The present invention is not limited to the above specific embodiments, and various modifications and variations are possible. Any modification, equivalent replacement, improvement, etc. made to the above embodiments based on the technical essence of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A maintenance access panel structure for preventing loosening under negative pressure, characterized by: It comprises a ceiling panel (1), an inspection port cover (2), a slide rail frame (3) and a locking device (4), wherein the slide rail frame (3) is arranged above the ceiling panel (1), the locking device (4) is arranged above the inspection port cover (2), the locking device (4) is slidably connected to the slide rail frame (3), the locking device (4) comprises a shell (41) and a pressing block (45), a slide rail (31) is arranged on the slide rail frame (3), and the shell (41) and the pressing block (45) are located on both sides of the slide rail frame (3); A worm (42) and a screw (43) are provided in the housing (41), and the worm (42) and the screw (43) are perpendicular to each other in space; a telescopic block (44) is provided at the end of the screw (43) away from the worm (42), and a screw channel (442) is provided in the telescopic block (44); a pressing block (45) is provided at the end of the telescopic block (44) away from the screw (43), and the pressing block (45) includes a connecting portion (451) and a pressing block (453), the connecting portion (451) and the pressing block (453) are connected via a sliding portion (452); a worm wheel (431) is provided at the end of the screw (43) close to the worm (42), and the screw (43) is connected to the worm (42) via the worm wheel (431); an internal thread is provided in the screw channel (442), and the screw (43) is connected to the screw channel (442) via the internal thread, and the screw (43) has and only has a part of the screw (43) The screw channel (442) is provided with a thread for connecting the screw channel (442) on the connecting portion (451), the connecting portion (451) is located in the screw channel (442), and the sliding portion (452) is slidably connected to the slide rail (31); a worm channel (413) is provided at the bottom of the housing (41), and a telescopic channel (411) is provided on the surface of the housing (41) close to the slide rail frame (3), and the worm (42) is located in the worm channel (4 13), the telescopic block (44) is located in the telescopic channel (411); an adjusting cap (421) is provided at the bottom of the worm (42), and a positioning block (423) is provided at the end of the worm (42) away from the adjusting cap (421), the positioning block (423) is a cylinder, the diameter of the positioning block (423) is larger than the diameter of the worm (42), and the worm (42) is connected to the top of the worm channel (413) through the positioning block (423); During installation, install the slide rail frame to the ceiling board, open a hole in the same shape as the bottom of the shell on the inspection cover, insert the bottom of the shell into the hole, fix the shell and the inspection cover, align the screw channel on the locking device with the slide rail of the slide rail frame, and install the clamping block to the other side of the slide rail frame so that the connecting part and the sliding part pass through the slide rail, the connecting part is connected to the screw channel, so that the sliding part of the clamping block is located on the slide rail, and the clamping block and the shell are respectively located on both sides of the slide rail frame.

2. The structure of the access panel for preventing negative pressure loosening according to claim 1, characterized in that: The telescopic block (44) is slidably connected to the telescopic channel (411); a limit block (441) is provided on the telescopic block (44); a slide groove (412) is provided on the telescopic channel (411); the limit block (441) is located in the slide groove (412); and the limit block (441) is slidably connected to the slide groove (412).

3. The structure of the access panel for preventing negative pressure loosening according to claim 1, characterized in that: A wrench interface (422) is provided at the bottom of the adjusting cap (421).

4. The structure of the access panel for preventing negative pressure loosening according to claim 1, characterized in that: Mounting pieces (414) for connecting to the inspection port cover plate (2) are provided on both sides of the housing (41), and the mounting pieces (414) are connected to the inspection port cover plate (2) via screws.

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