A wall access door
Patent Information
- Application Number
- CN202522148035.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-10
AI Technical Summary
[0004]在实际使用中发现，检修门背板在长期开合的震动下，转轴容易发生脱落的情况，不仅影响检修门的正常使用，还存在安全隐患
1.当检修门背板处于关闭状态时，定位机构通过机械锁定方式将检修门背板与框体连接，减少检修门背板出现自行开启的情况，从而维持检修口的封闭状态；检修门背板通过转轴在转动过程中，通过设置防脱件有效减少转轴脱离阶梯槽的情况，有效提升了检修门背板转动的稳定性，降低故障发生的可能性；
Smart Images
Figure CN224785583U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building decoration technology, and in particular to a wall access door. Background Technology
[0002] In building construction and the installation and maintenance of various facilities, various equipment and pipes are usually installed inside walls. To ensure the long-term stable operation of these components hidden inside the walls, regular cleaning, inspection, and maintenance are required. Therefore, the industry commonly uses openable access doors in the walls to facilitate operators in inspecting and maintaining the interior of the walls.
[0003] In related technologies, the traditional installation method of maintenance doors has certain limitations. First, a reserved hole adapted to the maintenance needs is opened on the side wall of the wall brick as an maintenance port. Then, a groove is opened on the inner edge of the reserved hole. At the same time, a groove is also opened on the side wall of the back panel of the maintenance door. Then, the rotating shaft is fixed in the groove on the reserved hole with adhesive, and the rotating shaft is rotatably connected to the back panel of the maintenance door.
[0004] In actual use, it was found that the pivot of the inspection door back panel is prone to falling off due to the vibration of long-term opening and closing. This not only affects the normal use of the inspection door, but also poses a safety hazard. Utility Model Content
[0005] To address the issue of hinge detachment, this application provides a wall-mounted access door that improves the stability of hinge rotation and reduces the likelihood of hinge detachment.
[0006] The technical solution for a wall-mounted access door provided in this application is as follows: A wall-mounted access door includes a frame, which is located on and fixedly disposed to the inner wall of the access opening. A rotating assembly is provided on the back panel of the access door, and the back panel is rotatably connected to the frame via the rotating assembly. A stepped groove is provided on the frame. The rotating assembly includes a pivot shaft and an anti-detachment component disposed on the door. The pivot shaft is rotatably connected to the stepped groove, and the anti-detachment component is used to prevent the pivot shaft from disengaging from the stepped groove. The back panel of the access door can be rotated to cover the access opening. A positioning mechanism is provided on the frame for fixing the back panel of the access door to the outer frame.
[0007] By adopting the above technical solution, when the inspection door back panel is in the closed state, the positioning mechanism connects the inspection door back panel to the frame through mechanical locking, reducing the possibility of the inspection door back panel opening on its own, thereby maintaining the closed state of the inspection opening. During the rotation of the inspection door back panel via the pivot, the anti-detachment component effectively reduces the possibility of the pivot disengaging from the stepped groove, effectively improving the stability of the inspection door back panel's rotation and reducing the likelihood of malfunctions.
[0008] Optionally, the anti-detachment component is configured as a rotating bearing, wherein the outer ring of the rotating bearing is fixedly disposed with the inner wall of the stepped groove, and the inner ring of the rotating bearing is fixedly disposed with the outer wall of the rotating shaft.
[0009] By adopting the above technical solution, when the inspection door back panel is opened or closed, the inner ring of the rotating bearing rotates synchronously with the rotating shaft, while the outer ring of the rotating bearing remains stationary. The rotating bearing converts sliding friction into rolling friction through rolling elements, effectively reducing frictional resistance, reducing the jamming problem caused by excessive friction during shaft rotation, and improving the stability of shaft rotation.
[0010] Optionally, the frame is provided with a snap-fit groove, and the positioning mechanism includes a snap-fit block and an elastic element. Both the snap-fit block and the elastic element are located in the snap-fit groove. The snap-fit block is configured as a spherical structure. One end of the elastic element is fixedly connected to the snap-fit block, and the other end is fixedly connected to the inner wall of the snap-fit groove. The outer frame is provided with a locking groove for accommodating the snap-fit block.
[0011] By adopting the above technical solution, when the snap-fit block contacts the contact surface of the inspection door back panel, the elastic element is compressed, causing the snap-fit block to be pulled into the snap-fit groove. As the inspection door back panel is fully closed, the snap-fit block is embedded into the locking groove under the restoring force of the elastic element, thereby forming a snap-fit fixation between the inspection door back panel and the frame, reducing the possibility of the inspection door back panel being accidentally opened due to vibration. When the inspection door back panel needs to be opened, by applying an inward force to the inspection door back panel, the snap-fit block enters the snap-fit groove under the abutment of the inner wall of the locking groove, thereby realizing the opening of the inspection door back panel.
[0012] Optionally, a limiting plate is provided on the frame, and the limiting plate abuts against the inner surface of the inspection door back panel.
[0013] By adopting the above technical solution, the back panel of the maintenance door abuts against the limit plate when it is closed, which can prevent the back panel of the maintenance door from rotating excessively due to inertia when it is closed, reduce the collision between the back panel of the maintenance door and the equipment in the maintenance opening, and help extend the service life of the back panel of the maintenance door.
[0014] Optionally, a connecting rod is rotatably provided at the bottom of the inspection door back panel, and a sliding groove is provided on the frame, with one end of the connecting rod slidably connected to the sliding groove.
[0015] By adopting the above technical solution, when the inspection door back panel is rotated and opened, one end of the connecting rod slides in the sliding groove, providing guidance and support for the inspection door back panel. At the same time, the connecting rod can also limit the rotation angle of the inspection door back panel, preventing the inspection door back panel from rotating outwards excessively and colliding with the wall tiles, which is conducive to improving the service life of the inspection door back panel.
[0016] Optionally, the snap-fit component is provided with an anti-slip block, one end of which is fixedly disposed with the elastic element.
[0017] By adopting the above technical solution, the anti-slip block can prevent the snap-fit component from detaching from the snap-fit groove, reduce the loosening or displacement of the snap-fit block in the snap-fit groove, and help improve the stability of the snap-fit component's telescopic movement.
[0018] Optionally, a flange is provided on the periphery of the frame, and the flange is fixed to the inner wall of the inspection port.
[0019] The flange increases the contact area between the frame and the access panel. By fixing the flange to the side wall of the access panel, the frame can be stably fixed in the position of the access panel.
[0020] Optionally, sound-absorbing cotton is provided on the side of the limiting plate near the back panel of the inspection door.
[0021] By adopting the above technical solution, when the back panel of the maintenance door and the limiting plate come into contact, the sound-absorbing cotton can buffer the collision between the two, reduce the noise, and make the back panel of the maintenance door quieter during the closing process.
[0022] Optionally, the frame and the inner wall of the access port are filled with fireproof sealant.
[0023] By adopting the above technical solutions, fireproof sealant can reduce the flow of air and dust, further improving the sealing performance of the access door.
[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When the inspection door back panel is closed, the positioning mechanism connects the inspection door back panel to the frame through mechanical locking, reducing the possibility of the inspection door back panel opening on its own, thereby maintaining the closed state of the inspection opening; during the rotation of the inspection door back panel via the pivot, the anti-detachment component effectively reduces the possibility of the pivot disengaging from the stepped groove, effectively improving the stability of the rotation of the inspection door back panel and reducing the possibility of failure. 2. When the snap-fit block contacts the contact surface of the inspection door back panel, the elastic element is compressed, causing the snap-fit block to be pulled into the snap-fit groove. As the inspection door back panel is fully closed, the snap-fit block is embedded into the locking groove under the restoring force of the elastic element, thus forming a snap-fit fixation between the inspection door back panel and the frame, reducing the possibility of the inspection door back panel opening accidentally due to vibration. When the inspection door back panel needs to be opened, by applying an inward force to the inspection door back panel, the snap-fit block enters the snap-fit groove under the abutment of the inner wall of the locking groove, thus realizing the opening of the inspection door back panel. 3. When the inspection door back panel is rotated open, one end of the connecting rod slides in the sliding groove, providing guidance and support for the inspection door back panel. At the same time, the connecting rod can also limit the rotation angle of the inspection door back panel, preventing the inspection door back panel from rotating outwards excessively and colliding with the wall tiles, which helps to improve the service life of the inspection door back panel. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram showing the structure of the rotating assembly; Figure 3 This is a schematic diagram illustrating the structure of the positioning mechanism in an embodiment of this application; Figure 4 yes Figure 3 A magnified view of A in the middle.
[0026] Reference numerals: 1. Frame; 2. Rotating assembly; 21. Rotating shaft; 22. Anti-detachment component; 3. Step groove; 4. Positioning mechanism; 41. Snap-fit block; 42. Elastic component; 5. Snap-fit groove; 6. Limiting plate; 7. Connecting rod; 71. First connecting rod; 72. Second connecting rod; 8. Sliding groove; 9. Flanged edge; 10. Locking groove; 11. Wall brick; 12. Inspection door back panel; 13. Anti-slip block. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0028] This application discloses a wall access door, referring to... Figure 1 and Figure 2 The system includes a frame 1, which is rectangular in shape and is fixedly mounted on the inner wall of the access door along its edge. A rotating assembly 2 is provided on the back panel 12 of the access door, and the frame 1 and the back panel 12 are rotatably connected via the rotating assembly 2. A positioning mechanism 4 is provided on the frame 1; when the back panel 12 rotates to close the access door, the back panel 12 is fixedly connected to the frame 1 via the positioning mechanism 4. Stepped grooves 3 are formed on the upper and lower inner sidewalls of the frame 1, and the inner diameter of the stepped grooves 3 gradually decreases from the end furthest from the back panel 12 to the end closest to the back panel 12. The rotating assembly 2 includes a rotating shaft 21 and an anti-detachment component 22. Two rotating shafts 21 are provided, each welded and fixed to the side walls of the door body near the stepped groove 3. The end of the rotating shaft 21 furthest from the inspection door back panel 12 extends into the stepped groove 3. The anti-detachment component 22 is sleeved on the end of the rotating shaft 21 furthest from the inspection door back panel 12. In this embodiment, the anti-detachment component 22 is a bearing. The inner ring of the bearing is fixedly connected to the rotating shaft 21, and the outer ring of the bearing is fixedly connected to the inner wall of the stepped groove 3. This effectively reduces the likelihood of the rotating shaft 21 detaching from the stepped groove 3 and reduces the frictional force of the rotating shaft 21, ensuring the safety and reliability of the inspection door back panel 12 during use and reducing the risk of the inspection door back panel 12 detaching. This application effectively improves the situation where the rotating shaft 21 detaches.
[0029] Reference Figure 1A sliding groove 8 is provided on the lower inner wall of the frame 1 along its length. A connecting rod 7 is hinged to the bottom of the inspection door back panel 12. The connecting rod 7 includes a first connecting rod 71 and a second connecting rod 72. The first connecting rod 71 and the second connecting rod 72 are hinged together. The end of the first connecting rod 71 away from the second connecting rod 72 is slidably connected in the sliding groove 8. The end of the second connecting rod 72 away from the first connecting rod 71 is hinged to the bottom of the inspection door back panel 12. The first connecting rod 71 and the second connecting rod 72 rotate relative to each other, which effectively improves the flexibility of the rotation of the inspection door back panel 12.
[0030] When the inspection door back panel 12 rotates from the closed state to the open state, as the rotation angle of the inspection door back panel 12 changes continuously, one end of the first connecting rod 71 gradually slides towards the right side of the frame 1 in the sliding groove 8 until the inspection door back panel 12 can no longer rotate. This helps to prevent the inspection door back panel 12 from rotating excessively and colliding with the wall bricks 11, and facilitates limiting the rotation angle of the inspection door back panel 12.
[0031] Reference Figure 1 A limiting plate 6 is fixedly connected to the upper inner wall of the frame 1. When the inspection door back panel 12 is closed, the inner wall of the inspection door back panel 12 abuts against the limiting plate 6, which restricts the limiting plate 6 from continuing to rotate inward. This ensures that the inspection door back panel 12 is aligned with the side wall of the wall brick 11 after closing, making the inspection door back panel 12 and the frame 1 on the same plane, effectively improving the aesthetics of the wall brick 11. Sound-absorbing cotton is adhered to the side of the limiting plate 6 near the inspection door back panel 12, which can reduce the noise and collision between the two.
[0032] Reference Figure 3 The outer surface of the frame 1 is on the same plane as the wall brick 11. The frame 1 has an integrally formed flange 9 on its perimeter. The flange 9 is fixed to the inner wall of the wall around the access port with expansion screws. The gap between the frame 1 and the inner wall of the access port is filled with fireproof sealant, which helps to form a heat insulation layer and improve the fireproof sealing performance.
[0033] Reference Figure 3 and Figure 4 The positioning mechanism 4 includes a snap-fit block 41 and an elastic element 42. In this embodiment, the snap-fit block 41 is a spherical structure, and one end of the elastic element 42 is fixedly connected to the snap-fit block 41. Multiple snap-fit grooves 5 are provided on the inner wall of the frame 1; in this embodiment, three are provided. The end of the elastic element 42 away from the snap-fit block 41 is fixed to the bottom of the snap-fit groove 5. A locking groove 10 is provided on the side wall of the door corresponding to the snap-fit groove 5, and the locking groove 10 can also accommodate the snap-fit block 41.
[0034] In normal conditions, the elastic element 42 extends the locking block 41 out of the opening of the locking groove 5. When the inspection door back panel 12 is about to close, the side wall of the inspection door back panel 12 abuts against the locking block 41. At this time, the elastic element 42 is compressed, and the locking block 41 is pulled into the locking groove 5. When the inspection door back panel 12 rotates until the locking groove 10 is aligned with the locking groove 5, the locking block 41, under the restoring force of the elastic element 42, penetrates into the locking groove 10, completing the positioning function of the inspection door back panel 12 and the frame 1. This effectively prevents the inspection door back panel 12 from accidentally opening due to vibration or other factors when closed, and improves the stability of the closure of the inspection door back panel 12.
[0035] Reference Figure 4 An anti-slip block 13 is provided between the elastic element 42 and the locking block 41. The two ends of the anti-slip block 13 are fixed to the elastic element 42 and the locking block 41 respectively. The anti-slip block 13 is slidably connected within the locking groove 5, and the side of the anti-slip block 13 closest to the locking block 41 abuts against the inner wall of the locking groove 5. When the locking block 41 moves towards the inspection door back panel 12 under the tension of the elastic element 42, the anti-slip block prevents the locking block 41 from detaching from the locking groove 5, thus improving the stability of the locking block 41's movement.
[0036] The implementation principle of a wall-mounted access door disclosed in this application is as follows: The operator presses the right side of the access door back panel 12 inwards, causing the left side of the access door back panel 12 to rotate outwards via the pivot 21. The connecting rod 7 slides within the sliding groove 8 as the rotation angle of the access door back panel 12 changes until the connecting rod 7 can no longer slide. At this point, the access door back panel 12 has rotated to its maximum angle, allowing the operator to repair the equipment inside the access opening. When the operator presses the left side of the access door back panel 12 inwards, the access door back panel 12 gradually approaches the frame 1 until the access door back panel 12 engages with the locking block 4. The locking block 41 is accommodated in the locking groove 10, and after the inspection door back panel 12 is locked with the frame 1, the inner side wall of the inspection door back panel 12 abuts against the limiting plate 6, preventing the inspection door back panel 12 from continuing to rotate under inertia, thus reducing the rotation of the inspection door back panel 12 into the inspection opening; when the inspection door back panel 12 rotates, it rotates in the stepped groove 3 through the rotating shaft 21, and the anti-detachment component 22 can effectively prevent the rotating shaft 21 from falling out of the stepped groove 3, improving the stability of the rotating shaft 21. This application effectively reduces the chance of the rotating shaft 21 falling out and reduces safety hazards.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A wall-mounted access door, comprising a frame (1) and an access door back panel (12), characterized in that: The frame (1) is located on the inner wall of the inspection port and is fixedly installed thereon. The inspection door back panel (12) is provided with a rotating assembly (2). The inspection door back panel (12) is rotatably connected to the frame (1) through the rotating assembly (2). The frame (1) is provided with a stepped groove (3). The rotating assembly (2) includes a rotating shaft (21) and an anti-detachment component (22) provided on the door. The rotating shaft (21) is rotatably connected in the stepped groove (3). The anti-detachment component (22) is used to prevent the rotating shaft from detaching from the stepped groove (3). The inspection door back panel (12) is rotated to cover the inspection port. The frame (1) is provided with a positioning mechanism (4) for fixing the inspection door back panel (12) on the frame (1).
2. The wall access door according to claim 1, characterized in that, The anti-detachment component (22) is configured as a rotating bearing, the outer ring of the rotating bearing is fixedly disposed with the inner wall of the stepped groove (3), and the inner ring of the rotating bearing is fixedly disposed with the outer wall of the rotating shaft (21).
3. The wall access door according to claim 1, characterized in that, The frame (1) has a snap-fit groove (5), and the positioning mechanism (4) includes a snap-fit block (41) and an elastic element (42). The snap-fit block (41) and the elastic element (42) are both located in the snap-fit groove (5). The snap-fit block (41) is configured as a spherical structure. One end of the elastic element (42) is fixedly connected to the snap-fit block (41), and the other end is fixedly connected to the inner wall of the snap-fit groove (5). The inspection door back panel (12) has a locking groove (10) for accommodating the snap-fit block (41).
4. The wall access door according to claim 1, characterized in that, A limiting plate (6) is provided on the frame (1), and the limiting plate (6) abuts against the inner surface of the inspection door back panel (12).
5. The wall access door according to claim 1, characterized in that, The bottom of the inspection door back panel (12) is rotatably provided with a connecting rod (7), and a sliding groove (8) is provided on the frame (1). One end of the connecting rod (7) is slidably connected in the sliding groove (8).
6. The wall access door according to claim 3, characterized in that, The snap-fit block (41) is provided with an anti-slip block (13), one end of which is fixedly disposed with the elastic element (42).
7. The wall access door according to claim 1, characterized in that, The frame (1) is provided with a flange (9) on its periphery, and the flange (9) is fixed to the inner wall of the inspection port.
8. The wall access door according to claim 4, characterized in that, Sound-absorbing cotton is provided on the side of the limiting plate (6) near the back panel (12) of the inspection door.
9. The wall access door according to claim 1, characterized in that, The frame (1) and the inner wall of the inspection port are filled with fireproof sealant.