Assembled ceiling ventilation pipe

Abstract

The present application relates to the technical field of ventilation ducts, and discloses an assembled ceiling ventilation duct, comprising a plurality of duct bodies connected in sequence and a support device provided at the connection between two adjacent duct bodies, the support device comprising a suspension and a first connecting mechanism and a second connecting mechanism connected to the suspension in a horizontal sliding manner along the same straight line; the first connecting mechanism and the second connecting mechanism each comprise a mounting frame, a base frame and a closing assembly, the mounting frame is slidably connected to the end of the mounting frame away from the suspension, the base frame moves in a direction away from the mounting frame to form an opening for the end of the air supply duct body to vertically enter or exit from the mounting frame, and the closing assembly is used to drive the base frame to close the opening when the air supply duct body enters the mounting frame. The air supply duct body moves upward to align with the position of the opening and enters the mounting frame, while the closing assembly gradually drives the base frame to close the opening to achieve fixed installation of the air supply duct body. The present application is convenient and quick to operate, and can improve the installation efficiency of the ventilation duct.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation ducts, and in particular to an assembled ceiling ventilation duct. Background Art

[0002] The ventilation ducts in the ventilation system of a building are relatively long. Therefore, manufacturers generally prefabricate the ventilation ducts in sections in the workshop, and then transport them to the construction site for assembly and splicing. For the sake of aesthetics, some buildings install the ventilation ducts between the ceiling and the suspended ceiling.

[0003] Ventilation duct installation typically involves first securing a hanger to the ceiling, then suspending the duct within the hanger and bolting it in place. If the duct is longer than 20 meters, a sway-proof bracket is also required to clamp the duct on all four sides to prevent it from swaying. Consequently, installing the duct requires long, inconvenient hours of overhead work. Furthermore, the bolt holes for adjacent ducts must be aligned, which also takes a significant amount of time.

[0004] The Chinese patent with announcement number CN210424152U discloses an air duct that is easy to install, including an air duct main body and a connecting frame fixed to the ceiling. Connecting frames are provided at both ends of the air duct main body, and a plurality of connecting through holes are provided inside the connecting frame. A connecting base is welded in the vertical direction of the outer wall of the air duct main body, and the top of the connecting base is detachably mounted to the connecting frame by fastening bolts. During installation, the air duct main body is directly aligned with the position of the connecting frame and moved upward, and then the connecting base and the connecting frame are fixed with bolts. However, when connecting the connecting base and the connecting frame, the air duct main body still needs to be lifted, and the two adjacent air duct main bodies are locked with multiple bolts, and the convenience of the overall installation process is still not high.

[0005] In order to improve the defect that the ventilation duct is not easy to install, the present application provides an assembled ceiling ventilation duct. Summary of the Invention

[0006] This application provides an assembled ceiling ventilation duct, which adopts the following technical solutions:

[0007] An assembled ceiling ventilation duct comprises a plurality of duct bodies connected in sequence and a support device provided at the connection between two adjacent duct bodies, wherein the support device comprises a suspension and a first connecting mechanism and a second connecting mechanism connected to the suspension in a horizontally sliding manner along the same straight line direction;

[0008] The first connecting mechanism and the second connecting mechanism each include a mounting frame, a base frame, and a closing assembly, wherein the mounting frame is slidably connected to the suspension, and the base frame is movably connected to an end of the mounting frame away from the suspension, and the base frame moves in a direction away from the mounting frame to form an opening for the end of the air duct body to vertically enter or exit the mounting frame, and the closing assembly is used to drive the base frame to close the opening when the air duct body enters the mounting frame;

[0009] A locking assembly is provided on the first connecting mechanism, and the locking assembly includes a pushing unit and a locking unit. The pushing unit is used to push the first connecting mechanism to slide toward the second connecting mechanism until the ports of the two air duct bodies abut against each other, and the locking unit is used to lock the connection between the base frame and the mounting frame when the ports of the two air duct bodies abut against each other.

[0010] By adopting the above technical solution, the supporting device is fixed to the ceiling through the suspension, and the air duct body is moved upward to the position of the opening into the mounting frame. At the same time, the closing component gradually drives the base frame to close the opening as the air duct body moves; when the air duct body completely enters the mounting frame, the pushing unit brings the first connecting mechanism and the second connecting mechanism close to the end faces of the two air duct bodies abut and connect. When the two air duct bodies abut, the locking unit locks the movement of the base frame, thereby completing the installation. The operation is convenient and quick, and no other parts are required for connection, thereby improving the installation efficiency.

[0011] Optionally, the closing assembly includes a first rotating shaft and a second rotating shaft arranged vertically in the mounting frame, and a chain of meshing transmission is sleeved between the first rotating shaft and the second rotating shaft; the second rotating shaft is arranged at the end of the mounting frame away from the suspension, the base frame is fixedly connected to the second rotating shaft, and the outer surface of the air duct body is vertically provided with a rack meshing with the chain.

[0012] By adopting this technical solution, when the air duct body vertically enters the mounting frame, the rack on the outer surface of the air duct body engages with the chain inside the mounting frame, driving the chain's transmission. The inner surface of the chain engages with the second rotating shaft, driving the second rotating shaft to rotate, thereby causing the base frame to rotate toward the mounting frame and gradually close the opening. In addition, the engagement of the rack and chain improves the stability of the connection structure between the air duct body and the connector.

[0013] Optionally, the closing components are provided in two numbers and are symmetrically mounted on two opposite inner walls of the mounting frame, and the base frame includes a first bracket and a second bracket respectively connected to the two rotating shafts.

[0014] By adopting the above technical solution, the base frame is set as two first brackets and second brackets that can open and close to each other at the same time. Compared with a hinged base frame, the length of the first bracket and the second bracket is shorter, so that when the ventilation pipe enters the mounting frame, the opening is just closed by the first bracket and the second bracket, so that the first bracket and the second bracket support the air pipe body.

[0015] Optionally, the pushing unit includes a pushing rod, the outer surface of which is provided with an external thread, and a threaded hole that cooperates with the pushing rod is provided on the side of the suspension close to the first connecting mechanism, and the pushing rod is screwed into the direction of the first connecting mechanism through the threaded hole and pushes the first connecting mechanism.

[0016] By adopting the above technical solution, when the air duct body enters the mounting frame and the opening is closed by the base frame, the push rod is rotated, the push rod is screwed in the direction of the first connecting mechanism and pushes the first connecting mechanism to move in the direction of the second connecting mechanism, that is, the end faces of the two air duct bodies are pressed tightly together.

[0017] Optionally, the mounting frame of the first connecting mechanism is provided with a pushing groove for the end portion of the pushing rod to enter and disengage, and a movable groove connected to the pushing groove, and the second rotating shaft is provided with a locking hole in the radial direction, and when the base frame closes the opening, the locking hole is connected to a slot of the movable groove away from the pushing groove; the locking unit includes a locking piece, which is movably arranged in the movable groove, and the locking piece is connected to a first elastic piece that drives the locking piece to move in a direction away from the locking hole, and when the push rod enters the movable groove through the pushing groove, it pushes the end portion of the locking piece to enter the locking hole.

[0018] By adopting the above technical solution, while rotating the push rod, the end of the push rod enters the movable groove through the push groove. While the end of the push rod abuts against the bottom of the movable groove to push the first connecting mechanism, it can also push the locking piece toward the locking hole, so that the end of the locking piece is inserted into the locking hole, thereby limiting the movement of the base frame, improving the structural stability of the support device, and making the connection of the air duct body more stable.

[0019] Optionally, the locking unit further includes a connecting piece, which is arranged on a side of the base frame of the first connecting mechanism facing the second connecting mechanism, and a connecting groove for the connecting piece to be plugged in is provided on the base frame of the second connecting mechanism.

[0020] By adopting the above technical solution, the locking member limits the movement of the upper chassis of the first connecting mechanism, and then the connecting member of the upper chassis of the first connecting mechanism cooperates with the connecting groove of the upper chassis of the second connecting mechanism, so that the chassis of the second connecting mechanism can be locked at the same time, further improving the stability of the support device structure.

[0021] Optionally, a positioning member and a second elastic member for driving the positioning member to move vertically away from the connecting member are provided on the top of the mounting frame of the second connecting mechanism, and a positioning hole for the end of the positioning member to be mated and plugged in is provided on the suspension.

[0022] By adopting the above technical solution, when the push rod pushes the first connecting mechanism toward the second connecting mechanism, the second connecting mechanism will also slide until it is away from the first connecting mechanism and abuts against the suspension. Through the cooperation between the positioning member and the positioning hole on the suspension, the installation structure of the air duct body can be made more stable, thereby facilitating the installation of the next air duct body on the next support device.

[0023] Optionally, a guide assembly is provided in the mounting frame, and the guide assembly includes guide members symmetrically arranged on two opposite inner walls of the mounting frame, and the guide members are connected to a third elastic member that drives the guide members to move away from the inner wall of the mounting frame, and the bottom end of the guide member is provided with an inclined surface inclined toward the opening direction.

[0024] By adopting the above technical solution, in order to facilitate installation, the rack on the outer wall of the air duct body can be set at a position close to the bottom, and the distance between the two opposite inner walls of the mounting frame can be set to be greater than the width of the air duct body. After the top of the air duct body enters the mounting frame, it can gradually be centered on the middle of the mounting frame through the guiding action of the guide member. As the air duct body continues to move upward, the rack can be just engaged with the chain, thereby improving the accuracy of installation; in addition, the guide member is driven by the third elastic member to cooperate with and press against the air duct body, and there is an elastic margin between the air duct body and the supporting device. When the air volume in the air duct body is large, it can play a shock-absorbing and buffering role, thereby reducing the possibility of damage to the entire ventilation duct system and improving the service life.

[0025] Optionally, the guide assembly further includes a first magnetic component disposed on the top of the mounting bracket and a second magnetic component disposed on the top of the air duct body and magnetically attracted to cooperate with the first magnetic component.

[0026] By adopting the above technical solution, the cooperation between the first magnetic part and the second magnetic part can further improve the accuracy of the installation of the air duct body, and when the air duct body is completely inserted into the mounting frame and the base frame is closed, it can improve the supporting effect, so that the staff can operate the push rod to lock the connection between the first connecting mechanism and the second connecting mechanism, and lock the activity of the base frame, further improving the structural stability.

[0027] In summary, this application has at least one of the following beneficial effects:

[0028] 1. During installation, simply align the air duct body with the opening and move it upward until it is completely inserted into the mounting bracket. Then, rotate the push rod so that the end of the push rod passes through the push slot and enters the movable slot. The end of the push rod abuts against the bottom of the movable slot, pushing the first connecting mechanism closer to the second connecting mechanism. At the same time, the end of the locking member can be inserted into the locking hole to restrict the movement of the base frame, thereby completing the installation. The operation is convenient and quick, and no other parts are required for connection, which improves installation efficiency.

[0029] 2. The guide assembly can improve the accuracy and convenience of duct installation through guiding and magnetic effects, and improve the structural stability of the entire ventilation duct system;

[0030] 3. The guide member is driven by the third elastic member to fit tightly against the air duct body. There is an elastic margin between the air duct body and the supporting device, which can play a role in shock absorption and buffering, while reducing the possibility of damage to the entire ventilation duct system and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of an assembled ceiling ventilation duct in an embodiment of the present application;

[0032] Figure 2 This is an exploded view of the assembled ceiling ventilation duct in an embodiment of the present application;

[0033] Figure 3 yes Figure 1 Cross-sectional view along AA direction;

[0034] Figure 4 yes Figure 1 Cross-sectional view along BB direction;

[0035] Figure 5 is a cross-sectional view of the relevant structure of the locking assembly in an embodiment of the present application;

[0036] Figure 6 It is a cross-sectional view of the positioning member related structure in the embodiment of the present application.

[0037] Explanation of Reference Numerals: 1. duct body; 11. rack; 12. connecting frame; 13. rubber pad; 2. supporting device; 3. suspension; 31. suspension rod; 311. reinforcing rib; 32. suspension plate; 321. sliding groove; 322. threaded hole; 323. positioning hole; 4. first connecting mechanism; 5. second connecting mechanism; 51. positioning member; 52. second elastic member; 6. Mounting frame; 61. Pushing slot; 62. Movable slot; 621. Horizontal section; 622. Vertical section; 63. Accommodating slot; 64. Sinking slot; 65. Yielding slot; 7. Base frame; 71. First bracket; 72. Second bracket; 8. Closing assembly; 81. First rotating shaft; 82. Second rotating shaft; 821. Locking hole; 83. Chain; 9. Locking assembly; 91. Pushing unit; 911. Pushing rod; 912. Operating part; 913. Pushing part; 92. Locking unit; 921. Locking member; 922. First elastic member; 923. Connecting member; 924. Connecting slot; 10. Guide assembly; 101. Guide member; 102. Third elastic member; 103. First magnetic member; 104. Second magnetic member; 110. Ceiling. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] Reference Figure 1 The embodiment of the present application discloses an assembled suspended ceiling ventilation duct, comprising a plurality of duct bodies 1 connected in sequence and a supporting device 2 arranged at the connection between two adjacent duct bodies 1; a connecting frame 12 is provided at both ends of the duct body 1, and a rubber pad 13 is fixed to the surface of the connecting frame 12 away from the duct body 1; the supporting device 2 is installed at intervals along the direction of the ventilation duct and between the ceiling 110 and the suspended ceiling, and the supporting device 2 includes a suspension 3 and a first connecting mechanism 4 and a second connecting mechanism 5 respectively connected to the two duct bodies 1.

[0040] Reference Figure 2 and Figure 3 The suspension 3 includes several suspension rods 31 and suspension plates 32 connected to the suspension rods 31; the end of the suspension rod 31 away from the suspension plate 32 can be fixed to the ceiling 110 by an expansion bolt, and a reinforcing rib 311 can be provided on the outside of the suspension rod 31 to improve the structural strength; a sliding groove 321 is provided on the bottom surface of the suspension plate 32, and the top of the first connecting mechanism 4 and the second connecting mechanism 5 are fitted in the sliding groove 321, so that the first connecting mechanism 4 and the second connecting mechanism 5 can approach or move away from each other.

[0041] Reference Figure 2The first connecting mechanism 4 and the second connecting mechanism 5 each include a mounting frame 6, a base frame 7, and a closing assembly 8. The top of the mounting frame 6 is installed in the sliding groove 321. The base frame 7 is movably connected to the end of the mounting frame 6 away from the suspension 3. The base frame 7 moves in a direction away from the mounting frame 6 to form an opening in the mounting frame 6 so that the end of the air supply duct body 1 can vertically enter or exit. The closing assembly 8 is used to drive the base frame 7 to close the opening when the air supply duct body 1 enters the mounting frame 6. Preferably, when the air duct body 1 is installed, the side surface of the connecting frame 12 close to the air duct body 1 can abut against the outer surface of the mounting frame 6. A locking assembly 9 is provided on the first connecting mechanism 4. The locking assembly 9 includes a pushing unit 91 and a locking unit 92. The pushing unit 91 is used to push the first connecting mechanism 4 to slide toward the second connecting mechanism 5 until the ends of the two air duct bodies 1 abut against each other. The locking unit 92 is used to lock the connection base frame 7 and the mounting frame 6 when the ends of the two air duct bodies 1 abut against each other.

[0042] When the air duct body 1 moves upward to the position of the opening and enters the mounting bracket 6, the closing component 8 gradually drives the base frame 7 to close the opening as the air duct body 1 moves; after the air duct body 1 completely enters the mounting bracket 6, the pushing unit 91 makes the first connecting mechanism 4 and the second connecting mechanism 5 approach until the end faces of the two air duct bodies 1 are abutted and connected. When the two air duct bodies 1 are abutted, the locking unit 92 fixes the base frame 7 and the mounting part to complete the installation. The operation is convenient and quick, and no other parts are required for connection, which improves the installation efficiency.

[0043] In one embodiment, the base frame 7 can be slidably connected to the mounting frame 6 in the horizontal direction. When the air duct body 1 enters the mounting frame 6, the closing component 8 drives the base frame 7 to slide and close the opening. In this embodiment, the base frame 7 is preferably configured to be rotatably connected to the mounting frame 6. For details, refer to Figure 3 The closing component 8 includes a first rotating shaft 81 and a second rotating shaft 82 arranged vertically in the mounting frame 6, and a receiving groove 63 is opened on the inner wall of the mounting frame 6. The first rotating shaft 81 and the second rotating shaft 82 are respectively arranged horizontally in the receiving groove 63, and the two ends of the first rotating shaft 81 and the second rotating shaft 82 are rotatably connected to the inner wall of the receiving groove 63, and the second rotating shaft 82 is arranged at the end of the mounting frame 6 away from the suspension 3; a chain 83 is sleeved between the first rotating shaft 81 and the second rotating shaft 82, and the base 7 is fixedly connected to the second rotating shaft 82. A rack 11 is vertically provided on the outer surface of the air duct body 1, and the inner and outer surfaces of the chain 83 are both arranged to be toothed. The first rotating shaft 81 and the second rotating shaft 82 are both provided with an engaging portion that engages with the inner surface of the chain 83, and the outer surface of the chain 83 engages with the rack 11. The base frame 7 and the closing component 8 can be set as a horizontal frame. Further preferably, in this embodiment, the closing component 8 is set as two and symmetrically installed on the two opposite inner walls of the mounting frame 6, and the base frame 7 is correspondingly set as a first bracket 71 and a second bracket 72 respectively connected to the two second rotating shafts 82.

[0044] In order to facilitate the installation of the air duct body 1 in the mounting frame 6, refer to Figure 3 and Figure 4 , a guide assembly 10 is provided in the mounting frame 6. The rack 11 on the outer wall of the air duct body 1 can be set at a position close to the bottom, and the distance between the two opposite inner walls of the mounting frame 6 can be set to be greater than the width of the air duct body 1; the guide assembly 10 includes a guide member 101 symmetrically arranged on the two opposite inner walls of the mounting frame 6 and a first magnetic member 103 arranged on the top of the mounting frame 6, and the two opposite inner walls of the mounting frame 6 are provided with a sinking groove 64 for the guide member 101 to move. The guide member 101 is connected to a third elastic member 102 that drives the guide member 101 to move away from the inner wall of the mounting frame 6. The third elastic member 102 can be set as a spring, and the end of the third elastic member 102 away from the guide member 101 is connected to the bottom wall of the sinking groove 64. The bottom end of the guide member 101 is provided with an inclined surface inclined toward the opening direction; the top inner wall of the mounting frame 6 is provided with a groove for accommodating the first magnetic member 103, and the top of the air duct body 1 is provided with a second magnetic member 104 that cooperates with the first magnetic member 103 for magnetic attraction. The first magnetic member 103 and the second magnetic member 104 can be magnets with opposite magnetic poles. When the first magnetic member 103 and the second magnetic member 104 are attracted to each other, the second magnetic member 104 is also completely placed in the groove, so that the top wall of the air duct body 1 abuts against the inner top wall of the mounting bracket 6.

[0045] In order to facilitate installation, when two adjacent air duct bodies 1 are pushed into the mounting frame 6, a gap is left between the connection frames 12 of the two air duct bodies 1. When the air duct bodies 1 are completely inserted into the mounting frame 6, they are fixedly connected by the pushing unit 91; the pushing unit 91 includes a pushing rod 911. In one embodiment, the pushing rod 911 can be set to a smooth rod shape and pass through the suspension 3 to abut and push the first connecting mechanism 4. Then, the pushing rod 911 is locked on the suspension 3 by a spring pin or bolt. In this embodiment, refer to Figure 2 The outer surface of the push rod 911 is provided with external threads to enable self-locking of the push rod 911. A threaded hole 322 is provided on the side of the suspension 3 near the first connecting mechanism 4, which mates with the push rod 911. The push rod 911 passes through the threaded hole 322 and is screwed toward the first connecting mechanism 4 to push the first connecting mechanism 4. The end of the push rod 911 away from the first connecting mechanism 4 is provided with an operating portion 912 for easy operation by a worker. The push rod 911 is screwed toward the first connecting mechanism 4 and pushed until the connection frame 12 of the two air duct bodies 1 is tightly abutted. The elastic rubber pad 13 provides both sealing and a buffering effect.

[0046] In order to further simplify the installation steps, while rotating the push rod 911 until the two air duct bodies 1 abut against each other, the movement of the base frame 7 can be further restricted by the locking unit 92, thereby completing the installation.

[0047] Reference Figure 5 The locking unit 92 includes a locking member 921. The mounting frame 6 of the first connecting mechanism 4 is provided with a push slot 61 for the end of the push rod 911 to enter and exit, and a movable slot 62 connected to the push slot 61. A locking hole 821 is radially provided on the second rotating shaft 82. When the base frame 7 is closed, the locking hole 821 is connected to the slot of the movable slot 62 away from the push slot 61. The locking member 921 is movably arranged in the movable slot 62. The locking member 921 is connected to a first elastic member 922 that drives the locking member 921 to move away from the locking hole 821. The first elastic member 922 can be configured as a spring or an elastic rope. When the push rod 911 passes through the push slot 61 and enters the movable slot 62, it pushes the end of the locking member 921 into the locking hole 821.

[0048] The movable groove 62 includes a horizontal section 621 and a vertical section 622 connected to each other. The pushing groove 61 is connected to the middle of the horizontal section 621. The end of the vertical section 622 away from the horizontal section 621 passes through the bottom surface of the mounting frame 6. The locking members 921 are provided in two and symmetrically arranged in the movable groove 62. In this embodiment, referring to Figure 5 The locking member 921 includes a plurality of balls that are connected and abutted and arranged within the horizontal section 621 and the vertical section 622. One end of the first elastic member 922 is connected to the end of the locking member 921 near the movable slot 62, and the other end is connected to the movable slot 62 of the mounting bracket 6. The end of the push rod 911 away from the operating portion 912 is provided with a push portion 913. The push portion 913 can be configured as a wedge-shaped push portion 913 for pushing the locking member 921 toward the locking hole 821. The mounting bracket 6 is connected to the movable slot 62 and defines a clearance slot 65 for the push portion 913 to move. In other embodiments, the locking member 921 can be configured as a horizontal rod and a vertical rod that are in contact with each other, with the horizontal rod placed within the horizontal section 621 and connected to the first elastic member 922, and the vertical rod placed within the vertical section 622 and connected to a spring that drives it to move vertically upward.

[0049] Reference Figure 2 The locking unit 92 further includes a connecting member 923, which is disposed on the side of the chassis 7 of the first connecting mechanism 4 facing the second connecting mechanism 5. The chassis 7 of the second connecting mechanism 5 is provided with a connecting groove 924 for the connecting member 923 to be mated with. Through the mating of the connecting member 923 on the chassis 7 of the first connecting mechanism 4 and the connecting groove 924 on the chassis 7 of the second connecting mechanism 5, the locking member 921 can simultaneously lock the chassis 7 of the first connecting mechanism 4 and the second connecting mechanism 5.

[0050] In order to facilitate the installation of the next air duct body 1 on the next supporting device 2, refer to Figure 2 and Figure 6A positioning groove is provided at the top of the mounting frame 6 of the second connecting mechanism 5, in which a positioning member 51 and a second elastic member 52 for driving the positioning member 51 to move vertically away from the connecting member 923 are provided. A positioning hole 323 is provided on the suspension 3 for the end of the positioning member 51 to be plugged in.

[0051] The implementation principle of an assembled ceiling ventilation duct in the embodiment of the present application is as follows:

[0052] During installation, only two steps are required. First, align the air duct body 1 with the opening and move it upward: after the top of the air duct body 1 enters the mounting frame 6, it can gradually align with the middle of the mounting frame 6 through the guiding action of the guide member 101. As the air duct body 1 continues to move upward, the rack 11 on the outer surface of the air duct body 1 can just engage with the chain 83. The rack 11 engages with the chain 83 in the mounting frame 6, thereby driving the transmission of the chain 83. The second rotating shaft 82 engaged with the inner surface of the chain 83 rotates synchronously, thereby causing the base frame 7 to rotate toward the mounting frame 6 and gradually close the opening. Secondly, rotate the push rod 911 so that the end of the push rod 911 passes through the push groove 61 and enters the movable groove 62: the end of the push rod 911 abuts against the bottom of the movable groove 62 to push the first connecting mechanism 4 close to the second connecting mechanism 5, and at the same time, it can also move the locking member 921 toward the second rotating shaft 82. The end of the locking member 921 is inserted into the locking hole 821 to limit the movement of the base frame 7, thereby completing the installation, and the operation is convenient and quick.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An assembled ceiling ventilation duct, characterized by: It comprises a plurality of air duct bodies (1) connected in sequence and a support device (2) provided at the connection between two adjacent air duct bodies (1), wherein the support device (2) comprises a suspension (3) and a first connection mechanism (4) and a second connection mechanism (5) connected to the suspension (3) in a horizontal sliding manner along the same straight line direction; The first connecting mechanism (4) and the second connecting mechanism (5) both comprise a mounting frame (6), a base frame (7) and a closing assembly (8); the mounting frame (6) is slidably connected to the suspension frame (3); the base frame (7) is movably connected to an end of the mounting frame (6) away from the suspension frame (3); the base frame (7) moves in a direction away from the mounting frame (6) to form an opening for the end of the air duct body (1) to vertically enter or exit from the mounting frame (6); the closing assembly (8) is used to drive the base frame (7) to close the opening when the air duct body (1) enters the mounting frame (6); The first connecting mechanism (4) is provided with a locking assembly (9), the locking assembly (9) comprising a pushing unit (91) and a locking unit (92), the pushing unit (91) being used to push the first connecting mechanism (4) to slide in the direction of the second connecting mechanism (5) until the ports of the two air duct bodies (1) abut against each other, and the locking unit (92) being used to lock and connect the base frame (7) and the mounting frame (6) when the ports of the two air duct bodies (1) abut against each other; The closing assembly (8) comprises a first rotating shaft (81) and a second rotating shaft (82) arranged vertically in the mounting frame (6); a chain (83) for meshing transmission is provided between the first rotating shaft (81) and the second rotating shaft (82); the second rotating shaft (82) is provided at an end of the mounting frame (6) away from the suspension frame (3); the base frame (7) is fixedly connected to the second rotating shaft (82); and a rack (11) meshing with the chain (83) is provided vertically on the outer surface of the air duct body (1); The closing components (8) are provided in two pieces and are symmetrically mounted on two opposite inner walls of the mounting frame (6); the base frame (7) comprises a first bracket (71) and a second bracket (72) respectively connected to the two second rotating shafts (82); The pushing unit (91) includes a pushing rod (911), the outer surface of the pushing rod (911) is provided with an external thread, and a threaded hole (322) is provided on a side of the suspension (3) close to the first connecting mechanism (4) and is connected to the pushing rod (911). The pushing rod (911) is screwed into the direction of the first connecting mechanism (4) through the threaded hole (322) and pushes the first connecting mechanism (4).

2. The assembled ceiling ventilation duct according to claim 1, characterized in that: The mounting frame (6) of the first connecting mechanism (4) is provided with a pushing groove (61) for the end of the pushing rod (911) to enter and disengage, and a movable groove (62) connected to the pushing groove (61); a locking hole (821) is radially provided on the second rotating shaft (82); when the base frame (7) closes the opening, the locking hole (821) is connected to a notch of the movable groove (62) away from the pushing groove (61); the locking unit (92) includes a locking member (921), the locking member (921) is movably arranged in the movable groove (62), the locking member (921) is connected to a first elastic member (922) for driving the locking member (921) to move in a direction away from the locking hole (821), and when the pushing rod (911) passes through the pushing groove (61) and enters the movable groove (62), the end of the locking member (921) is pushed to enter the locking hole (821).

3. The assembled ceiling ventilation duct according to claim 2, characterized in that: The locking unit (92) further comprises a connecting member (923), wherein the connecting member (923) is arranged on a side of the base frame (7) of the first connecting mechanism (4) facing the second connecting mechanism (5), and a connecting groove (924) for the connecting member (923) to be plugged in and matched is provided on the base frame (7) of the second connecting mechanism (5).

4. The assembled ceiling ventilation duct according to claim 3, characterized in that: A positioning member (51) and a second elastic member (52) for driving the positioning member (51) to move in a direction vertically away from the connecting member (923) are provided on the top of the mounting frame (6) of the second connecting mechanism (5), and a positioning hole (323) for the end of the positioning member (51) to be plugged in is provided on the suspension (3).

5. The assembled ceiling ventilation duct according to claim 1, characterized in that: A guide assembly (10) is provided in the mounting frame (6), and the guide assembly (10) includes guide members (101) symmetrically arranged on two opposite inner walls of the mounting frame (6), and the guide members (101) are connected to a third elastic member (102) for driving the guide members (101) to move away from the inner wall of the mounting frame (6), and the bottom end of the guide member (101) is provided with an inclined surface inclined toward the opening.

6. The assembled ceiling ventilation duct according to claim 5, characterized in that: The guide assembly (10) further comprises a first magnetic attraction member (103) arranged at the top inner portion of the mounting frame (6) and a second magnetic attraction member (104) arranged at the top outer portion of the air duct body (1) and magnetically attracted in cooperation with the first magnetic attraction member (103).

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