Limiting mechanism for installing central air conditioner air pipe
By designing an adjustable strap and L-shaped locking block as the limiting component, the problem of insufficient applicability of traditional limiting mechanisms is solved, enabling stable fixing and safe monitoring of ducts with different outer diameters, thus improving installation efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU YUANLAI NEW ENERGY DEVELOPMENT CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional limiting mechanisms have a limited range of duct positioning, making it difficult to adapt to the installation needs of ducts with different outer diameters, resulting in increased installation costs and reduced efficiency.
A central air conditioning duct installation device was designed, which includes positioning components and limiting components. The device uses adjustable straps and L-shaped clamps to position the duct at multiple points, and combines pressure sensors and wireless transmission modules to monitor the limiting status in real time, thereby achieving stable fixing of ducts of different outer diameters.
It expands the applicability of the limit components, improves installation efficiency and safety, reduces installation costs, and ensures the stability and safety of the duct during operation through real-time monitoring and warning functions.
Smart Images

Figure CN224246413U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duct installation technology, specifically to a limiting mechanism for installing central air conditioning ducts. Background Technology
[0002] During the installation of a central air conditioning system, the stable installation of air ducts is a key step in ensuring the efficient operation of the air conditioning system. When installing air ducts, it is necessary to use limiting mechanisms to position and fix the air ducts to avoid problems such as shaking or displacement during operation, thereby ensuring the normal use of the air ducts and the stability of the system.
[0003] In the process of developing this application, the following problems were found with the technology: the existing limiting mechanism for central air conditioning duct installation has certain limitations in practical applications. Traditional limiting mechanisms usually have a fixed structure and a relatively limited positioning range for ducts, making it difficult to adapt to the installation requirements of ducts with different outer diameters. When faced with ducts of different specifications, different limiting mechanisms are often required, which not only increases the installation cost but also reduces the installation efficiency.
[0004] Therefore, a limiting mechanism for the installation of central air conditioning ducts is proposed. Utility Model Content
[0005] The purpose of this utility model is to solve the problem that traditional limiting mechanisms usually have a fixed structure, a relatively limited positioning range for air ducts, and are difficult to adapt to the installation requirements of air ducts with different outer diameters. This utility model provides a limiting mechanism for the installation of central air conditioning air ducts.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A limiting mechanism for installing a central air conditioning duct includes a positioning component and a duct. The duct is placed at the bottom of the inner wall of the positioning component. The positioning component has a groove inside, and a limiting component for positioning the duct is slidably connected inside the groove. Warning components for indicating that the limiting component is loose are installed on the outer ends of the limiting component and the positioning component. The positioning component includes a support plate and two sets of expansion sleeves. The two sets of expansion sleeves are installed inside the top of the wall. A lead rod is threaded inside the expansion sleeve. Two sets of through holes are opened on the upper surface of the support plate. The bottom end of the lead rod passes through the through holes inside the support plate. A first nut is threaded on the outside of the lead rod, and the upper surface of the first nut abuts against the lower surface of the support plate.
[0008] Furthermore, the limiting component includes two sets of sliders. The upper surface of the support plate has a slot, and the two sets of sliders are slidably connected inside the slot of the support plate. A strap is installed on the upper surface of the left set of sliders, and a groove is opened on the upper surface of the right set of sliders. The end of the strap away from the left set of sliders is inserted into the groove of the right set of sliders. A sliding groove is opened on the front of the support plate. A screw is installed on the front of both sets of sliders, and both sets of screws are slidably connected inside the sliding groove of the support plate. A second nut is threaded onto the outside of the screw, and the back of the second nut abuts against the front of the support plate. A first connecting block and a second connecting block are installed on the lower surface of the right set of sliders. A threaded hole is opened inside the second connecting block, and a bolt is threaded into the threaded hole of the second connecting block. The end of the bolt near the air duct abuts against the outer surface of the strap.
[0009] Furthermore, a groove is provided on the side of the strap near the air duct, and two sets of L-shaped locking blocks are slidably connected inside the groove of the strap. The two sets of L-shaped locking blocks are respectively locked at the top corners of the left and right sides of the air duct.
[0010] Furthermore, the warning component includes a pressure sensing strip and a wireless transmission module. The pressure sensing strip is slidably connected inside the groove of the strap, and the wireless transmission module is installed on the upper surface of the support plate. The output end of the pressure sensing strip and the access end of the wireless transmission module are electrically connected, and the wireless transmission module is wirelessly connected to a remote control terminal.
[0011] Furthermore, a rubber strip is placed on the upper surface of the support plate, and the upper surface of the rubber strip is attached to the lower surface of the air duct.
[0012] Furthermore, a locking block is installed on the side of the right-hand set of sliders away from the air duct. The upper surface of the locking block has a groove, and the inner contour of the groove matches the outer contour of the strap.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. This utility model uses a strap to attach it to the outer surface of the duct by pulling it. Then, by rotating two sets of second nuts, the back of the second nuts abuts against the front of the support plate. This restricts the movement of the two sets of sliders within the groove of the support plate. At this time, rotating the bolt engages one end of the strap near the right set of sliders between the first and second connecting blocks, thus positioning the duct at the upper end of the support plate. The length and position of the strap engaged at the outer end of the duct can be adjusted, allowing the strap to engage with the outer ends of ducts of various outer diameters during use. This expands the positioning range of the limiting component and improves the applicability of the device. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the top surface structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the top surface structure of the positioning component of this utility model;
[0018] Figure 4 This is a utility model Figure 1 Enlarged view of point A in the middle.
[0019] Reference numerals: 1. Positioning component; 101. Support plate; 102. Lead screw; 103. First nut; 104. Expansion sleeve; 2. Air duct; 3. Limiting component; 301. Strap; 302. Slider; 303. Screw; 304. First connecting block; 305. Second connecting block; 306. Bolt; 307. Second nut; 4. L-shaped locking block; 5. Rubber strip; 6. Warning component; 601. Pressure sensing strip; 602. Wireless transmission module; 7. Locking block. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0023] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] like Figures 1 to 4 As shown, a limiting mechanism for installing a central air conditioning duct includes a positioning component 1 and a duct 2. The duct 2 is placed at the bottom of the inner wall of the positioning component 1. A groove is formed inside the positioning component 1, and a limiting component 3 for positioning the duct 2 is slidably connected inside the groove. Figure 4 As shown, specifically, the limiting component 3 includes two sets of sliders 302. The upper surface of the positioning component 1 has a slot, and the two sets of sliders 302 are slidably connected inside the slots of the positioning component 1. A strap 301 is installed on the upper surface of the left set of sliders 302, and a groove is opened on the upper surface of the right set of sliders 302. The end of the strap 301 away from the left set of sliders 302 is inserted into the groove of the right set of sliders 302. A sliding groove is opened on the front of the positioning component 1, and screws are installed on the front of both sets of sliders 302. 303, both sets of screws 303 are slidably connected inside the groove of the positioning component 1. The external threads of the screws 303 are connected to the second nuts 307. The back of the second nuts 307 abuts against the front of the support plate 101. The lower surface of the right set of sliders 302 is equipped with a first connecting block 304 and a second connecting block 305. The second connecting block 305 has a threaded hole inside. The threaded hole of the second connecting block 305 is connected to a bolt 306. The end of the bolt 306 near the air duct 2 abuts against the outer surface of the belt 301.
[0025] More specifically, by pulling the strap 301, it is attached to the outer surface of the duct 2. Then, by rotating the two sets of second nuts 307, the back of the second nuts 307 is pressed against the front of the support plate 101. This restricts the movement of the two sets of sliders 302 within the groove of the support plate 101 by the second nuts 307 and the screw 303. At this time, rotating the bolt 306 engages one end of the strap 301 near the right set of sliders 302 between the first connecting block 304 and the second connecting block 305, so that the strap 301 positions and installs the duct 2 on the upper end of the support plate 101. The length and position of the strap 301 engaged at the outer end of the duct 2 can be adjusted, allowing the strap 301 to engage at the outer end of various outer diameter ducts 2 during use. This expands the positioning range of the limiting component 3 and improves the applicability of the device.
[0026] like Figures 1-2As shown, specifically, the positioning component 1 includes a support plate 101 and two sets of expansion sleeves 104. The two sets of expansion sleeves 104 are installed inside the top of the wall. The internal threads of the expansion sleeves 104 are connected to lead screws 102. The upper surface of the support plate 101 has two sets of through holes. The bottom end of the lead screw 102 passes through the internal through holes of the support plate 101. The external threads of the lead screw 102 are connected to a first nut 103. The upper surface of the first nut 103 abuts against the lower surface of the support plate 101.
[0027] More specifically, by pulling the limiting component 3, the limiting component 3 is fitted onto the outer end of the air duct 2, and then the limiting component 3 is slidably connected to the groove of the positioning component 1. This allows the limiting component 3 to be engaged with the outer end of air ducts 2 of various outer diameters during use, thereby expanding the positioning range of the limiting component 3 and thus improving the applicability of the device.
[0028] The strap 301 has a groove on the side near the air duct 2. Two sets of L-shaped locking blocks 4 are slidably connected inside the groove of the strap 301. The two sets of L-shaped locking blocks 4 are respectively locked at the top corners of the left and right sides of the air duct 2.
[0029] More specifically, when the worker pulls the strap 301 to attach it to the outer wall of the duct 2, the two sets of L-shaped locking blocks 4 are pushed to adjust and move their positions to a position parallel to the top corners on both sides of the duct 2. The two sets of L-shaped locking blocks 4 are then locked at the top corners on both sides of the duct 2, thus isolating the connection between the strap 301 and the corner of the duct 2. This prevents the worker from cutting the strap 301 at the corner of the duct 2 while pulling or moving the strap 301, thereby increasing the service life of the limiting component 3.
[0030] The outer ends of the limiting component 3 and the positioning component 1 are equipped with warning components 6 for indicating that the limiting component 3 is loose, such as... Figure 3 As shown, specifically, the warning component 6 includes a pressure sensing strip 601 and a wireless transmission module 602. The pressure sensing strip 601 is slidably connected inside the groove of the strap 301. The wireless transmission module 602 is installed on the upper surface of the support plate 101. The output end of the pressure sensing strip 601 and the access end of the wireless transmission module 602 are electrically connected. The wireless transmission module 602 is wirelessly connected to the remote control terminal.
[0031] More specifically, the pressure sensing strip 601 is installed between the contact surfaces of the strap 301 and the outer wall of the duct 2, ensuring that the pressure sensing strip 601 fits tightly against the outer surface of the duct 2 when the strap 301 positions it. When the strap 301 becomes loose, the measurement value of the pressure sensing strip 601 will be incorrect. An electrical connection is then established between the output end of the pressure sensing strip 601 and the access end of the wireless transmission module 602, triggering the pressure sensing strip 601 to transmit a signal to the remote control terminal when the strap 301 becomes loose. This prevents the duct 2 from shaking after the strap 301 becomes loose, thus improving the safety of the device during use.
[0032] A rubber strip 5 is placed on the upper surface of the support plate 101, and the upper surface of the rubber strip 5 is attached to the lower surface of the air duct 2.
[0033] More specifically, by positioning the rubber strip 5 between the contact surfaces of the duct 2 and the support plate 101, the rubber strip 5 isolates the contact surfaces of the duct 2 and the support plate 101, thereby preventing the duct 2 from colliding with the support plate 101 and causing abnormal noise during shaking.
[0034] A locking block 7 is installed on the side of the right-side slider 302 away from the air duct 2. The upper surface of the locking block 7 has a groove, and the inner contour of the groove matches the outer contour of the strap 301.
[0035] More specifically, after the strap 301 has completed its positioning of the air duct 2, by pushing the strap 301 away from one end of the left set of sliders 302, one end of the strap 301 is inserted into the groove of the locking block 7. Then, by pulling the strap 301, the part of the strap 301 that is hanging at the lower end of the support plate 101 is pulled out to a position where it fits against the lower surface of the support plate 101. This avoids the strap 301 hanging in mid-air after use, thus improving the aesthetics of the positioning component 3 during use.
[0036] In summary: By pulling the strap 301, it is fitted to the outer surface of the duct 2. Then, by rotating the two sets of second nuts 307, the back of the second nuts 307 is pressed against the front of the support plate 101. This restricts the movement of the two sets of sliders 302 within the groove of the support plate 101 by the second nuts 307 and the screw 303. At this time, rotating the bolt 306 engages one end of the strap 301 near the right set of sliders 302 between the first connecting block 304 and the second connecting block 305, thus positioning the duct 2 on the upper end of the support plate 101. The length and position of the strap 301 attached to the outer end of the duct 2 can be adjusted and moved, so that the strap 301 can be clamped to the outer end of the duct 2 of various outer diameter models during use; by pushing the two sets of L-shaped clamps 4, the positions of the two sets of L-shaped clamps 4 are adjusted and moved to a position parallel to the top corners on the left and right sides of the duct 2, and the two sets of L-shaped clamps 4 are clamped at the top corners on the left and right sides of the duct 2, so that the L-shaped clamps 4 isolate the connection between the strap 301 and the corner of the duct 2, thereby preventing the strap 301 from being cut at the corner of the duct 2 when the staff pulls or moves the strap 301.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A limiting mechanism for installing central air conditioning ducts, comprising a positioning component (1) and a duct (2), characterized in that: The air duct (2) is placed at the bottom of the inner wall of the positioning component (1). The positioning component (1) has a groove inside. A limiting component (3) for positioning the air duct (2) is slidably connected inside the groove. A warning component (6) for warning the limiting component (3) to loosen is installed on the outer end of the limiting component (3) and the positioning component (1). The positioning component (1) includes a support plate (101) and two sets of expansion sleeves (104). The two sets of expansion sleeves (104) are installed inside the top of the wall. A screw rod (102) is threaded inside the expansion sleeve (104). Two sets of through holes are opened on the upper surface of the support plate (101). The bottom end of the screw rod (102) passes through the through hole inside the support plate (101). A first nut (103) is threaded on the outside of the screw rod (102). The upper surface of the first nut (103) abuts against the lower surface of the support plate (101).
2. The limiting mechanism for installing central air conditioning ducts according to claim 1, characterized in that: The limiting component (3) includes two sets of sliders (302). The upper surface of the support plate (101) is provided with a slot. The two sets of sliders (302) are slidably connected inside the slots of the support plate (101). A strap (301) is installed on the upper surface of the left set of sliders (302), and a groove is provided on the upper surface of the right set of sliders (302). The end of the strap (301) away from the left set of sliders (302) is inserted into the groove of the right set of sliders (302). A sliding groove is provided on the front of the support plate (101), and a screw (303) is installed on the front of both sets of sliders (302). Both sets of screws (303) are slidably connected inside the groove of the support plate (101). The screws (303) are threaded with a second nut (307). The back of the second nut (307) abuts against the front of the support plate (101). A first connecting block (304) and a second connecting block (305) are installed on the lower surface of a set of sliders (302) on the right side. The second connecting block (305) has a threaded hole inside. A bolt (306) is threaded inside the threaded hole of the second connecting block (305). The end of the bolt (306) near the air duct (2) abuts against the outer surface of the belt (301).
3. The limiting mechanism for installing central air conditioning ducts according to claim 2, characterized in that: The strap (301) has a groove on the side near the air duct (2). Two sets of L-shaped clips (4) are slidably connected inside the groove of the strap (301). The two sets of L-shaped clips (4) are respectively clipped to the top corners of the left and right sides of the air duct (2).
4. The limiting mechanism for installing central air conditioning ducts according to claim 2, characterized in that: The warning component (6) includes a pressure sensing strip (601) and a wireless transmission module (602). The pressure sensing strip (601) is slidably connected inside the groove of the strap (301). The wireless transmission module (602) is installed on the upper surface of the support plate (101). The output end of the pressure sensing strip (601) and the access end of the wireless transmission module (602) are electrically connected. The wireless transmission module (602) is wirelessly connected to the remote control terminal.
5. A limiting mechanism for installing central air conditioning ducts according to claim 1, characterized in that: A rubber strip (5) is placed on the upper surface of the support plate (101), and the upper surface of the rubber strip (5) is attached to the lower surface of the air duct (2).
6. A limiting mechanism for installing central air conditioning ducts according to claim 2, characterized in that: A locking block (7) is installed on the side of the right-side set of sliders (302) away from the air duct (2). The upper surface of the locking block (7) is provided with a groove, and the inner contour of the groove is adapted to the outer contour of the strap (301).