Fireproof plugging device for gap between wire box and finish and construction method thereof

Abstract

The application discloses a kind of wire box and gap between finish fireproof plugging device and its construction method, it is related to building electrical engineering construction and fireproof plugging technical field, including metal corrugated hose, socket, wire box, first connecting component and second connecting component;The present application is set by metal corrugated hose, and first connecting component and second connecting component are used, realize and socket and wire box soft connection, can adapt the plane and depth deviation between finish opening and wire box pre-burying, realize the accurate fit of wire box and finish, solve the position matching problem caused by process intersection, device is set fireproof sealing structure in each connecting node, form full-dimension fireproof plugging, effectively eliminate fire weak point, simultaneously, each connecting component is convenient to disassemble and assemble, need not destroy finish to complete installation and later maintenance, greatly improve the convenience of construction and maintenance, can also guarantee the integrity and aesthetic property of fine finishing finish, realize the unity of construction adaptability, fire safety and operation convenience.

Description

Technical Field

[0001] This invention relates to building electrical engineering construction and fireproof sealing technology, specifically to a fireproof sealing device for the gap between junction boxes and finishes and its construction method. Background Technology

[0002] In the construction of high-end building decoration, civil engineering pre-embedded parts and decoration construction belong to different processes. Due to the cross-operation of multiple disciplines and the lack of unified construction standards, the deviation between the opening of the surface and the position of the reserved junction box has become a high-frequency and troublesome industry problem. This deviation directly causes the junction box to not fit with the finished surface of the decoration, forming obvious gaps.

[0003] Existing technologies lack a connection structure that can flexibly adapt to this deviation, making it difficult to adjust the positional deviation in both the planar and depth directions simultaneously. This results in noticeable gaps between the junction box and the finish. Furthermore, the fireproof sealing design of existing connection methods is inadequate, with simple sealing structures at connection nodes that easily create weak points in fire protection. This makes it difficult to meet the sealing requirements of fire protection codes. Moreover, the disassembly and assembly operations are cumbersome, and subsequent maintenance and adjustments require damage to the decorative finish and sealing structure. This not only increases construction rework costs but also affects the overall appearance of the interior decoration. The adaptability and ease of construction between different processes are also poor. Summary of the Invention

[0004] The purpose of this invention is to provide a fireproof sealing device and its construction method for the gap between the junction box and the decorative surface, so as to solve the problems in the prior art where the positions of the decorative surface and the junction box are misaligned, making it difficult to adapt, resulting in poor fireproof sealing effect and cumbersome disassembly and assembly operations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fireproof sealing device for the gap between a junction box and a decorative surface, comprising a metal corrugated flexible tube, a socket, a junction box, a first connecting component, and a second connecting component. One end of the metal corrugated flexible tube is connected to the socket through the first connecting component, and the other end of the metal corrugated flexible tube is connected to the junction box through the second connecting component. An outer sheath is provided on the outside of the metal corrugated flexible tube.

[0006] The first connecting assembly includes a connector, a fireproof sealing sleeve, a connecting seat, and a snap-fit ​​component. The connector is fixedly connected to one end of a corrugated metal flexible hose. The fireproof sealing sleeve is fitted over the outside of the connector. The connecting seat is fixedly installed on the back of the socket. The connector is inserted into the connecting seat and compresses the fireproof sealing sleeve. The snap-fit ​​component is fitted and engaged with the outside of the connecting seat. The snap-fit ​​component can abut against the connector to fix the connector and the connecting seat.

[0007] The second connecting assembly includes a connecting flange, a fireproof sealing ring, a receiving seat, and a locking component. The connecting flange is fixedly connected to the other end of the metal corrugated flexible hose. The receiving seat is fixedly mounted on the junction box. The fireproof sealing ring is sleeved on the outside of the connecting flange. The connecting flange is inserted into the receiving seat and compresses the fireproof sealing ring. The locking component is respectively mounted on the connecting flange and the receiving seat, and the locking component can achieve the snap-fit ​​fixation between the connecting flange and the receiving seat.

[0008] Furthermore, the buckle component includes a drive ring and multiple buckles. The connecting seat has an external thread, and the drive ring is threaded to the connecting seat. The connecting seat has multiple slots evenly distributed around its circumference, and each buckle is rotatably connected to its corresponding slot. The drive ring can press the multiple buckles as it moves along the connecting seat, causing the buckles to abut against the connecting head.

[0009] Furthermore, the buckle is rotatably connected to the inner wall of the slot, one end of the buckle extends into the interior of the connecting seat, and the other end of the buckle extends into the exterior of the connecting seat.

[0010] Furthermore, the drive ring has an annular structure, and the inner wall of the drive ring is provided with an internal thread that is adapted to the external thread of the connecting seat.

[0011] Furthermore, the locking component includes two locking blocks and an elastic element. The two locking blocks are symmetrically fixed on the connecting flange, and the elastic element is disposed in the receiving seat. The receiving seat has two symmetrical slots, an annular groove, and two symmetrical slots. The annular groove is connected to the two slots and the two slots respectively. When the connecting flange is inserted into the receiving seat, its end abuts against the end of the elastic element. The two locking blocks can slide into the annular groove through the slots and rotate to engage in the slots.

[0012] Furthermore, the elastic element is a compression spring, one end of which is fixedly connected to the inner bottom wall of the receiving seat, and the other end of which is positioned towards the open end of the receiving seat.

[0013] Furthermore, one end of the card slot is connected to the annular groove, and the other end of the card slot extends radially along the receiving seat. The size of the card slot is adapted to the outer dimensions of the card block.

[0014] Furthermore, the outer sheath is a tubular structure made of modified high flame-retardant PVC material, the inner wall of the outer sheath is fitted with the outer wall of the metal corrugated hose, the metal corrugated hose is an aluminum corrugated telescopic tubular structure, and the two ends of the metal corrugated hose are respectively integrally fixed with the connector and the connecting flange.

[0015] Furthermore, the fireproof sealing sleeve is an annular elastic structure, with its inner ring fitting against the outer wall of the connector and its outer ring fitting against the inner wall of the connector. The fireproof sealing ring is also an annular elastic structure, with its inner ring fitting against the outer wall of the connecting flange and its outer ring fitting against the inner wall of the receiving seat.

[0016] A construction method for a fireproof sealing device for the gap between a junction box and a decorative surface includes the following steps:

[0017] Step 1: Place the outer sheath over the outside of the metal corrugated hose, so that the inner wall of the outer sheath fits against the outer wall of the metal corrugated hose.

[0018] Step 2: Place the fireproof sealing sleeve over the outside of the connector, insert the connector into the connector seat on the back of the socket and squeeze the fireproof sealing sleeve, operate the buckling component on the outside of the connector seat to make the buckling component abut against the connector, and complete the fixed connection between the metal corrugated hose and the socket.

[0019] Step 3: Place the fireproof sealing ring on the outside of the connecting flange, insert the connecting flange into the receiving seat on the junction box and squeeze the fireproof sealing ring, operate the locking component on the connecting flange and the receiving seat to make the locking component snap and fix the connecting flange and the receiving seat, and complete the fixed connection between the metal corrugated hose and the junction box.

[0020] Step 4: Based on the installation positions of the trim and the junction box, axially extend or radially bend the corrugated metal flexible tube to adapt the socket to the installation position of the trim, thus completing the overall installation and fixing of the device.

[0021] Compared with existing technologies, the present invention provides a fireproof sealing device and construction method for the gap between a junction box and a decorative surface. By setting up a flexible metal corrugated hose and using a first connecting component and a second connecting component, a flexible connection with the socket and junction box is achieved. This can adapt to the plane and depth deviation between the decorative surface opening and the pre-embedded junction box, achieving a precise fit between the junction box and the decorative surface. Structurally, it solves the position matching problem caused by overlapping processes. The device is equipped with a dedicated fireproof sealing structure at each connection node, forming a full-dimensional fireproof seal, effectively eliminating fireproof weak points and meeting the requirements of building fire protection codes. At the same time, each connecting component adopts a convenient disassembly and assembly design, allowing installation and subsequent maintenance to be completed without damaging the decorative surface, greatly improving the convenience of construction and maintenance, and ensuring the integrity and aesthetics of the finished decorative surface, achieving a unity of construction adaptability, fire safety and ease of operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0024] Figure 2 A cross-sectional view provided for an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is an exploded view of the structure of the first connecting component provided in an embodiment of the present invention;

[0027] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0028] Figure 6 This is an exploded view of the structure of the second connecting component provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Corrugated metal flexible conduit; 2. Socket; 3. Junction box; 4. First connecting assembly; 41. Connector; 42. Fireproof sealing sleeve; 43. Connecting seat; 44. Snap-fit ​​component; 441. Groove; 442. Snap-fit; 443. Drive ring; 5. Second connecting assembly; 51. Connecting flange; 52. Fireproof sealing ring; 53. Receiving seat; 54. Locking component; 541. Slot; 542. Circular groove; 543. Slot; 544. Locking block; 545. Elastic element. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As attached Figure 1 To be continued Figure 6 As shown:

[0033] Example 1:

[0034] This invention provides a fireproof sealing device for the gap between a junction box and a decorative surface, comprising a corrugated metal flexible tube 1, a socket 2, a junction box 3, a first connecting component 4, and a second connecting component 5. One end of the corrugated metal flexible tube 1 is connected to the socket 2 via the first connecting component 4, and the other end of the corrugated metal flexible tube 1 is connected to the junction box 3 via the second connecting component 5. The corrugated metal flexible tube 1 is provided with an outer sheath. The corrugated metal flexible tube 1 can freely expand and contract along the axial direction to accommodate the depth gap deviation between the junction box 3 and the decorative surface, and can be bent arbitrarily along the radial direction to accommodate the pre-embedded parts of the junction box 3. The planar coordinate deviation from the veneer opening, the two ends are integrated with the connector 41 and connecting flange 51 to ensure structural strength. The hollow structure allows for concealed installation of electrical wires. The aluminum material has Class A fire resistance and provides good structural rigidity. The socket 2 is the main body for the veneer end of the device. The back fixed connector 43 serves as the connection carrier for the first connection component 4, enabling detachable fixing with the metal corrugated flexible conduit 1. Finally, the metal corrugated flexible conduit 1 is adjusted to seamlessly fit with the finished surface of the building wood veneer, meeting electrical requirements. In accordance with aesthetic requirements, junction box 3 serves as the main fixed body for the wall end of the device; the surface-fixed receiving seat 53 acts as the connection carrier for the second connecting component 5, enabling detachable snap-fit ​​connection with the metal corrugated flexible conduit 1, providing a fixed foundation for the entire device at the wall end, ensuring the concealment and electrical safety of the wiring. The outer sheath is a tubular structure made of modified high flame-retardant PVC material, covering the outside of the metal corrugated flexible conduit 1, with the inner wall tightly fitted to the outer wall of the metal corrugated flexible conduit 1, providing fireproof sealing, insulation protection, and wear resistance. The modified high flame-retardant PVC has an oxygen index ≥35. %, meeting Class A fire protection requirements, filling the fire-resistant weak points in the corrugated gap of the metal corrugated hose 1, while achieving electrical insulation, preventing leakage of the metal hose, and avoiding damage to the metal hose during construction. The first connecting component 4 is a detachable sealed connection structure between the metal corrugated hose 1 and the socket 2, used to achieve quick fixing, fireproof sealing and convenient disassembly and assembly. The second connecting component 5 is a snap-fit ​​sealed connection structure between the metal corrugated hose 1 and the junction box 3, used to achieve snap-fit ​​fixing, fireproof sealing and convenient disassembly and assembly.

[0035] The first connecting assembly 4 includes a connector 41, a fireproof sealing sleeve 42, a connecting seat 43, and a snap-fit ​​component 44. The connector 41 is fixedly connected to one end of the corrugated metal hose 1. The fireproof sealing sleeve 42 is fitted over the connector 41. The connecting seat 43 is fixedly mounted on the back of the socket 2. The connector 41 is inserted into the connecting seat 43 and compresses the fireproof sealing sleeve 42. The snap-fit ​​component 44 is fitted and fitted over the connecting seat 43. The snap-fit ​​component 44 can abut against the connector 41 to fix the connector 41 to the connecting seat 43. The connector 41 is integrally fixed to one end of the corrugated metal hose 1 and inserted into the connecting seat 43, serving as the abutment base for the snap-fit ​​component 44, thus connecting the corrugated metal hose 1 to the socket 2, and simultaneously providing a compression carrier for the fireproof sealing sleeve 42. The fireproof sealing sleeve 42 is fitted over the outside of the connector 41. When the connector 41 is inserted into the connector seat 43, it is squeezed, so that the inner ring fits tightly against the outer wall of the connector 41 and the outer ring fits tightly against the inner wall of the connector seat 43, sealing the gap between the connector 41 and the connector seat 43, preventing flames or smoke from spreading through the gap, and achieving fireproof sealing of the connection end. At the same time, it also has a certain buffering and shock absorption effect. The connector seat 43 is fixed to the back of the socket 2. The inside is the insertion space of the connector 41, and the outside is opened with external threads and grooves 441, which respectively cooperate with the threaded connection of the drive ring 443 and the rotational connection of the buckle 442, providing the installation and working foundation for the buckle component 44. The buckle component 44 is used to lock the connector 41 and the connector seat 43, ensuring the uniformity of the locking force and preventing the connector 41 from loosening.

[0036] The second connecting assembly 5 includes a connecting flange 51, a fireproof sealing ring 52, a receiving seat 53, and a locking member 54. The connecting flange 51 is fixedly connected to the other end of the metal corrugated hose 1. The receiving seat 53 is fixedly mounted on the junction box 3. The fireproof sealing ring 52 is sleeved on the outside of the connecting flange 51. The connecting flange 51 is inserted into the receiving seat 53 and compresses the fireproof sealing ring 52. The locking member 54 is respectively mounted on the connecting flange 51 and the receiving seat 53. The locking member 54 can achieve the snap-fit ​​fixation between the connecting flange 51 and the receiving seat 53. The connecting flange 51 is integrally fixed to the other end of the metal corrugated hose 1 and inserted into the receiving seat 53 to compress the fireproof sealing ring 52. The carrier, with its integrated structure, ensures the structural stability of the connection. The fireproof sealing ring 52 is fitted onto the outside of the connecting flange 51. When the connecting flange 51 is inserted into the receiving seat 53, it is squeezed, making the inner ring fit tightly against the outer wall of the connecting flange 51 and the outer ring fit tightly against the inner wall of the receiving seat 53, sealing the gap between the connecting flange 51 and the receiving seat 53, achieving a fireproof seal at the connection end, and filling the fireproof weak point at the end of the junction box 3. The receiving seat 53 is fixed to the surface of the junction box 3, providing a working base for the locking component 54, and at the same time providing space for the insertion and fixing of the connecting flange 51. The locking component 54 is used to realize the quick snap-fit ​​and disassembly of the metal corrugated flexible hose 1 and the junction box 3. The symmetrical design ensures the uniformity of the force during snap-fit.

[0037] The outer sheath is a tubular structure made of modified high flame retardant PVC material. The inner wall of the outer sheath is fitted with the outer wall of the metal corrugated hose 1. The metal corrugated hose 1 is an aluminum corrugated telescopic tubular structure. The two ends of the metal corrugated hose 1 are respectively integrated with the connector 41 and the connecting flange 51 as a fixed structure.

[0038] The fireproof sealing sleeve 42 is an annular elastic structure. The inner ring of the fireproof sealing sleeve 42 fits against the outer wall of the connector 41, and the outer ring of the fireproof sealing sleeve 42 fits against the inner wall of the connector 43. The fireproof sealing ring 52 is an annular elastic structure. The inner ring of the fireproof sealing ring 52 fits against the outer wall of the connecting flange 51, and the outer ring of the fireproof sealing ring 52 fits against the inner wall of the receiving seat 53.

[0039] The snap-fit ​​component 44 includes a drive ring 443 and multiple snap-fits 442. The connecting seat 43 has an external thread. The drive ring 443 is threadedly connected to the connecting seat 43. Multiple slots 441 are evenly spaced around the circumference of the connecting seat 43. Each snap-fit ​​442 is rotatably connected to its corresponding slot 441. The drive ring 443 moves along the connecting seat 43, compressing the multiple snap-fits 442, causing them to abut against the connecting head 41. The snap-fits 442 are rotatably connected to the inner wall of the slot 441. One end of each snap-fit ​​442 extends into the interior of the connecting seat 43, and the other end extends outwards. The drive ring 443 has a ring-shaped structure, and its inner wall has an internal thread that matches the external thread of the connecting seat 43. The slots 441 are evenly spaced around the circumference of the connecting head 41. The connector 43 provides a space for the rotating installation of the buckle 442, limiting its rotation range and ensuring that it can only rotate along the fixed axis of the slot 441. This prevents the buckle 442 from shifting and failing. The buckle 442 is rotatably connected to the slot 441, with one end extending into the interior of the connector 43 as the abutment end of the connector 41, and the other end extending into the exterior of the connector 43 as the pressing end of the drive ring 443. When the drive ring 443 presses the exterior end, the interior end rotates toward the connector 41 and abuts, completing the locking. The drive ring 443 is adapted to the external thread of the connector 43, and the axial movement along the connector 43 is achieved through the rotation of the thread, providing a pressing force to the buckle 442. The inclined surface of its inner wall can convert the axial movement force into the rotational force of the buckle 442, ensuring smooth pressing.

[0040] The locking component 54 includes two locking blocks 544 and an elastic element 545. The two locking blocks 544 are symmetrically fixed on the connecting flange 51. The elastic element 545 is disposed in the receiving seat 53. The receiving seat 53 has two symmetrical slots 541, annular grooves 542, and two symmetrical locking slots 543. The annular grooves 542 are respectively connected to the two slots 541 and the two locking slots 543. When the connecting flange 51 is inserted into the receiving seat 53, its end abuts against the end of the elastic element 545. The two locking blocks 544 can slide into the annular grooves 542 through the slots 541 and rotate to engage with the connecting flange 545. Inside the slot 543, the elastic element 545 is a compression spring. One end of the compression spring is fixedly connected to the inner bottom wall of the receiving seat 53, and the other end of the compression spring faces the open end of the receiving seat 53. One end of the slot 543 is connected to the annular groove 542, and the other end of the slot 543 extends radially along the receiving seat 53. The groove size of the slot 543 is adapted to the outer dimensions of the locking block 544. The locking block 544 is symmetrically fixed on the connecting flange 51. Its outer dimensions are adapted to the slot 543, and it can slide into the slot 541 and rotate in the annular groove 542, finally locking into the slot. Within 543, the connecting flange 51 and the receiving seat 53 are locked together. The elastic element 545 is a compression spring, with one end fixed to the inner bottom wall of the receiving seat 53 and the other end facing the open end. When the connecting flange 51 is inserted, it is compressed, generating a rebound force that pushes the connecting flange 51 back slightly, so that the locking block 544 is tightly engaged in the slot 543, preventing the locking block 544 from loosening. When unlocking, it provides a thrust for the connecting flange 51 to pop out, facilitating disassembly and assembly. The slots 541 are symmetrically opened at the open end of the receiving seat 53, serving as the entry channel for the locking block 544, ensuring that the locking block 544 slides accurately into the receiving seat 53. 3. Inside, the annular groove 542 is formed inside the receiving seat 53 and is connected to the slot 541, providing rotation space for the locking block 544. This allows the connecting flange 51 to drive the locking block 544 to rotate circumferentially, enabling the locking block 544 to switch from the slot 541 to the slot 543. The slot 543 is symmetrically formed inside the receiving seat 53 and is connected to the annular groove 542. It extends radially along the receiving seat 53 and provides locking and fixing space for the locking block 544. The elastic force of the elastic element 545 enables the locking block 544 to self-lock, preventing the locking block 544 from rotating in the opposite direction and ensuring the stability of the connection.

[0041] Working principle: The modified high flame-retardant PVC outer sheath is inserted along the axial direction of the metal corrugated hose 1, so that the inner wall of the outer sheath fits tightly against the outer wall of the metal corrugated hose 1, completing the basic protective pre-installation of the device. The fireproof sealing sleeve 42 is placed on the outside of the connector 41 at one end of the metal corrugated hose 1. The connector 41 is inserted into the connector seat 43 on the back of the socket 2. The connector 41 compresses the fireproof sealing sleeve 42, so that the fireproof sealing sleeve 42 fits tightly against the connector 41 and the connector seat 43, achieving a seal. The drive ring 44 is then... Three sleeves are installed outside the connector 43. When the drive ring 443 is rotated clockwise, it moves along the connector 43 towards the socket 2 via a threaded connection. The inclined surface of its inner wall presses against the outer ends of multiple clips 442, causing the clips 442 to rotate along the slot 441 on a fixed axis. The inner ends of the clips 442 rotate towards the connector 41 and abut against the outer wall of the connector 41. The drive ring 443 is rotated continuously until the multiple clips 442 abut against the connector 41 evenly, thus completing the locking and fixing of the metal corrugated hose 1 and the socket 2. The first connection end is sealed and secure. The fireproof sealing ring 52 is fitted onto the outside of the connecting flange 51 at the other end of the metal corrugated flexible hose 1. The two locking blocks 544 on the connecting flange 51 are aligned with the two slots 541 on the surface of the junction box 3 receiving seat 53. The connecting flange 51 is inserted into the receiving seat 53 along the slots 541. The connecting flange 51 compresses the fireproof sealing ring 52 to achieve a seal. At the same time, the end of the connecting flange 51 abuts against the compression spring inside the receiving seat 53 and compresses it. When the locking blocks 544 are fully slid into the receiving seat... When the annular groove 542 inside 53 is rotated clockwise, the connecting flange 51 is rotated clockwise, causing the two locking blocks 544 to rotate in a circle within the annular groove 542 until the two locking blocks 544 are aligned with the two locking slots 543. The connecting flange 51 is then released, and the spring force of the compression spring pushes the connecting flange 51 slightly back toward the opening end of the receiving seat 53, so that the two locking blocks 544 slide radially into the locking slots 543 and are tightly locked in the locking slots 543, thus completing the locking and connection of the metal corrugated hose 1 and the junction box 3. The second connection end is sealed and there is no looseness.

[0042] Based on the actual installation position of the wood veneer and the junction box 3, the metal corrugated hose 1 is slightly stretched along the axial direction to adapt to the depth gap of the decorative layer. The metal corrugated hose 1 is slowly bent along the radial direction to adapt to the plane deviation between the junction box 3 and the opening of the veneer, so that the socket 2 is precisely aligned with the installation position of the wood veneer. Finally, the socket 2 is fixed to the wood veneer to complete the overall installation of the device. At this time, the socket 2 and the wood veneer fit seamlessly. All connection ends of the device are sealed and fireproof. The wires are laid through the hollow channel of the metal corrugated hose 1.

[0043] If disassembly is required, rotate the drive ring 443 in the opposite direction. The drive ring 443 moves away from the socket 2 along the connector 43, releasing the pressure on the buckle 442. The buckle 442 resets under its own elasticity, releasing the contact with the connector 41. The connector 41 can then be pulled out from the connector 43, completing the disassembly of the socket 2 end.

[0044] Push the connecting flange 51 into the receiving seat 53. The compression spring is further compressed, causing the locking block 544 to retract from the slot 543 to the annular groove 542. Rotate the connecting flange 51 counterclockwise to align the locking block 544 with the slot 541. Under the action of the spring's rebound force, the connecting flange 51 is popped out, and the locking block 544 slides out along the slot 541, completing the disassembly of the three ends of the junction box.

[0045] Example 2:

[0046] A construction method for a fireproof sealing device for the gap between a junction box and a decorative surface includes the following steps:

[0047] Pre-installed protection logic: Before construction, the outer sheath is first put on the outside of the metal corrugated hose 1 and tightly fitted to provide the metal corrugated hose 1 with advance fireproof, insulation and wear-resistant protection, to avoid damage to the metal corrugated hose 1 during subsequent connection operations, and at the same time to ensure that the overall fireproof protection layer of the device is formed, laying the foundation for subsequent sealing and fireproofing.

[0048] The segmented sealing connection logic is as follows: the segmented connection method adopts the method of first connecting the socket end 2 and then the junction box end 3. Both follow the operation principle of pre-installing fireproof components - inserting and squeezing sealing - fixing the locking component 54. At the socket end 2, the fireproof sealing sleeve 42 is first put on the connector 41, and then the connector 41 is inserted into the connector seat 43 to achieve squeezing sealing. Finally, the snap-fit ​​component 44 is operated to complete the mechanical locking. At the junction box end 3, the fireproof sealing ring 52 is first put on the connecting flange 51, and then the connecting flange 51 is inserted into the receiving seat 53 to achieve squeezing sealing. Finally, the locking component 54 is operated to complete the snap-fit ​​fixing. The segmented connection can realize the precise assembly of the device. The combination of squeezing sealing and component locking ensures that the connection at each end meets the sealing and fireproof requirements and the structural fixing requirements at the same time.

[0049] Deviation adaptation logic: After the device is sealed and fixed at both ends with socket 2 and junction box 3, the metal corrugated hose 1 is axially stretched or radially bent according to the actual installation position of the surface finish and junction box 3 at the construction site, so that the position of socket 2 is precisely matched with the installation position of the surface finish. This adjustment step is carried out after the connection at both ends is completed, which can ensure the overall structural stability of the device during the adjustment process and avoid the connection end from becoming loose or the seal failing due to adjustment. At the same time, relying on the adjustable characteristics of the metal corrugated hose 1, flexible adaptation to the on-site working conditions can be achieved without on-site processing, thus improving construction efficiency.

[0050] Overall fixing logic: After completing the deviation adjustment of the metal corrugated flexible hose 1, the socket 2 is finally fixed to the finished surface of the decoration, so that the whole device forms an integrated structure with the building decoration and wall, and finally achieves the construction goal of seamless fitting of socket 2 and decoration, firm connection of junction box 3 and device, and fireproof sealing of all gaps, and completes the fireproof sealing construction of the gap between junction box 3 and decoration.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fireproof sealing device for the gap between a junction box and a decorative surface, characterized in that, The device includes a metal corrugated flexible tube (1), a socket (2), a junction box (3), a first connecting component (4), and a second connecting component (5). One end of the metal corrugated flexible tube (1) is connected to the socket (2) through the first connecting component (4), and the other end of the metal corrugated flexible tube (1) is connected to the junction box (3) through the second connecting component (5). The metal corrugated flexible tube (1) is provided with an outer sheath. The first connecting component (4) includes a connector (41), a fireproof sealing sleeve (42), a connecting seat (43), and a snap-fit ​​component (44). The connector (41) is fixedly connected to one end of the metal corrugated hose (1). The fireproof sealing sleeve (42) is fitted over the outside of the connector (41). The connecting seat (43) is fixedly installed on the back of the socket (2). The connector (41) is inserted into the connecting seat (43) and presses against the fireproof sealing sleeve (42). The snap-fit ​​component (44) is fitted over and fitted to the outside of the connecting seat (43). The snap-fit ​​component (44) can abut against the connector (41) to fix the connector (41) and the connecting seat (43). The second connecting assembly (5) includes a connecting flange (51), a fireproof sealing ring (52), a receiving seat (53), and a locking member (54). The connecting flange (51) is fixedly connected to the other end of the metal corrugated hose (1). The receiving seat (53) is fixedly installed on the junction box (3). The fireproof sealing ring (52) is sleeved on the outside of the connecting flange (51). The connecting flange (51) is inserted into the receiving seat (53) and compresses the fireproof sealing ring (52). The locking member (54) is respectively installed on the connecting flange (51) and the receiving seat (53). The locking member (54) can realize the snap-fit ​​fixation between the connecting flange (51) and the receiving seat (53).

2. The fireproof sealing device for the gap between the junction box and the decorative surface according to claim 1, characterized in that, The buckle component (44) includes a drive ring (443) and multiple buckles (442). The connecting seat (43) has an external thread. The drive ring (443) is threadedly connected to the connecting seat (43). The connecting seat (43) has multiple slots (441) evenly distributed around its circumference. Each buckle (442) is rotatably connected to the corresponding slot (441). The drive ring (443) can press the multiple buckles (442) as it moves along the connecting seat (43), causing the buckles (442) to abut against the connecting head (41).

3. The fireproof sealing device for the gap between the junction box and the decorative surface according to claim 2, characterized in that, The buckle (442) is rotatably connected to the inner wall of the slot (441), one end of the buckle (442) extends into the interior of the connecting seat (43), and the other end of the buckle (442) extends into the exterior of the connecting seat (43).

4. A fireproof sealing device for the gap between the junction box and the decorative surface according to claim 2, characterized in that, The drive ring (443) is an annular structure, and the inner wall of the drive ring (443) is provided with an internal thread that is adapted to the external thread of the connecting seat (43).

5. A fireproof sealing device for the gap between the junction box and the decorative surface according to claim 1, characterized in that, The locking component (54) includes two locking blocks (544) and an elastic element (545). The two locking blocks (544) are symmetrically fixed on the connecting flange (51). The elastic element (545) is disposed in the receiving seat (53). The receiving seat (53) has two symmetrical slots (541), annular grooves (542) and two symmetrical slots (543). The annular grooves (542) are respectively connected to the two slots (541) and the two slots (543). When the connecting flange (51) is inserted into the receiving seat (53), its end abuts against the end of the elastic element (545). The two locking blocks (544) can slide into the annular grooves (542) through the slots (541) and rotate to engage with the slots (543).

6. A fireproof sealing device for the gap between the junction box and the decorative surface according to claim 5, characterized in that, The elastic element (545) is a compression spring. One end of the compression spring is fixedly connected to the inner bottom wall of the support (53), and the other end of the compression spring is set towards the open end of the support (53).

7. A fireproof sealing device for the gap between the junction box and the decorative surface according to claim 5, characterized in that, One end of the slot (543) is connected to the annular groove (542), and the other end of the slot (543) extends radially along the receiving seat (53). The groove size of the slot (543) is adapted to the outer dimensions of the card block (544).

8. A fireproof sealing device for the gap between a junction box and a decorative surface according to claim 1, characterized in that, The outer sheath is a tubular structure made of modified high flame retardant PVC material. The inner wall of the outer sheath is in contact with the outer wall of the metal corrugated hose (1). The metal corrugated hose (1) is an aluminum corrugated telescopic tubular structure. The two ends of the metal corrugated hose (1) are respectively integrated with the connector (41) and the connecting flange (51) as a fixed structure.

9. A fireproof sealing device for the gap between a junction box and a decorative surface according to claim 1, characterized in that, The fireproof sealing sleeve (42) is an annular elastic structure. The inner ring of the fireproof sealing sleeve (42) is in contact with the outer wall of the connector (41), and the outer ring of the fireproof sealing sleeve (42) is in contact with the inner wall of the connector (43). The fireproof sealing ring (52) is an annular elastic structure. The inner ring of the fireproof sealing ring (52) is in contact with the outer wall of the connecting flange (51), and the outer ring of the fireproof sealing ring (52) is in contact with the inner wall of the receiving seat (53).

10. A construction method for a fireproof sealing device for the gap between a junction box and a decorative surface according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Place the outer sheath over the outside of the metal corrugated hose (1) so that the inner wall of the outer sheath fits against the outer wall of the metal corrugated hose (1). Step 2: Place the fireproof sealing sleeve (42) on the outside of the connector (41), insert the connector (41) into the connector seat (43) on the back of the socket (2) and squeeze the fireproof sealing sleeve (42). Operate the buckling member (44) on the outside of the connector seat (43) so that the buckling member (44) abuts against the connector (41) to complete the fixed connection between the metal corrugated hose (1) and the socket (2); Step 3: Place the fireproof sealing ring (52) on the outside of the connecting flange (51), insert the connecting flange (51) into the receiving seat (53) on the junction box (3) and squeeze the fireproof sealing ring (52), operate the locking member (54) on the connecting flange (51) and the receiving seat (53) to make the locking member (54) snap-fit ​​and fix the connecting flange (51) and the receiving seat (53), and complete the fixed connection between the metal corrugated hose (1) and the junction box (3); Step 4: Based on the installation positions of the trim and the junction box (3), axially extend or radially bend the metal corrugated hose (1) to make the socket (2) match the installation position of the trim, thus completing the overall installation and fixing of the device.

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