Ventilating fan applied to integrated ceiling

Abstract

A ventilating fan applied to an integrated ceiling comprises a ventilating fan body and four mounting structures, the ventilating fan body is mounted on the integrated ceiling through the mounting structures, and the integrated ceiling comprises a plurality of keels arranged at intervals; the ventilation fan comprises a square shell, the installation structure comprises installation frames and installation buckles, the installation buckles are installed at the bottoms of the installation frames, the installation frames are installed on the shell in a buckled mode, the installation buckles are installed on the keel in a buckled mode, and the four installation frames are installed at the four corners of the shell respectively. The two installation buckles located on the same side are installed on the same keel. The four corners of the ventilation fan shell are buckled and installed through the four installation structures, so that the ventilation fan can be installed on an integrated ceiling without any transformation or drilling, the integrity of the ventilation fan is protected, and performance loss or potential safety hazards possibly caused by transformation are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation fan technology field especially application in integrated ceiling's ventilation fan. BACKGROUND

[0002] Nowadays, whether is indoor of the family or the office will install ventilation fan, is used to remove the oil fume, steam and the exhaust gas of combustion when producing, testing and living, to ensure that the indoor air is fresh. With the development of economy, people pay more and more attention to the quality of living environment, and the individuality requirement of indoor decoration is also higher and higher. Therefore, the industry develops integrated ceiling, which scales the specifications of indoor ceiling to facilitate the installation, replacement and maintenance of the ceiling, and thus is loved by the market. However, the old ventilation fan product can only meet the installation structure of gypsum board ceiling or wooden frame ceiling. If the ventilation fan needs to be installed on the integrated ceiling, the installation structure needs to be added to the shell of the ventilation fan through screws, and then the installation structure is fixed on the support keel of the integrated ceiling through screws. This way needs to drill holes in the shell of the ventilation fan, which damages the ventilation fan to some extent, and a large number of screws are needed for fixing, which is very troublesome. Therefore, how to conveniently install the ventilation fan to the integrated ceiling without modifying the original ventilation fan is one of the current important topics. SUMMARY

[0003] In view of the problems in the background art, the purpose of the utility model is to provide a ventilation fan applied to integrated ceiling, which can be installed on the integrated ceiling without modifying the ventilation fan.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A ventilation fan applied to integrated ceiling, comprising a ventilation fan and four installation structures, the ventilation fan is installed on the integrated ceiling through the installation structure, the integrated ceiling comprises a plurality of spaced keels;

[0006] The ventilation fan comprises a square shell, the installation structure comprises a mounting bracket and a mounting buckle, the mounting buckle is installed at the bottom of the mounting bracket, the mounting bracket is buckled to the shell, and the mounting buckle is buckled to the keel. Four mounting brackets are respectively installed at four corners of the shell, and two mounting buckles on the same side are installed on the same keel.

[0007] Preferably, the shell comprises four side walls and four mounting convex edges, the four side walls are enclosed in a square shape, one mounting convex edge is arranged at the bottom of one side wall, the mounting convex edge extends towards the outside of the shell, and four mounting brackets are respectively installed at two ends of two oppositely arranged mounting convex edges;

[0008] The mounting frame comprises a horizontal base plate, two limiting plates and a clamping block. The horizontal base plate is horizontally arranged. The two limiting plates are arranged on the two sides of the top of the horizontal base plate in parallel to form a limiting part. The clamping block comprises a vertical plate and a horizontal plate. The vertical plate is vertically arranged on the top surface of the horizontal base plate. The horizontal plate is arranged on the top of the vertical plate. The horizontal plate is perpendicular to the vertical plate. The horizontal plate extends towards the limiting part. The clamping block and the horizontal base plate form a clamping part. The bottom of the end of the horizontal base plate away from the limiting plate is a buckle mounting part. The buckle mounting part is used for mounting the mounting buckle.

[0009] When the mounting frame is connected with the shell, the top surface of the horizontal base plate abuts against the bottom surface of the mounting protrusion. The two limiting plates abut against the two sides of the mounting protrusion respectively. One limiting plate is located inside the shell, and the other limiting plate is located outside the shell. The vertical plate abuts against one end of the mounting protrusion. The bottom surface of the horizontal plate abuts against the top surface of the mounting protrusion. The buckle mounting part is located outside the shell. The mounting buckle arranged at the same end of the two mounting protrusions is mounted on the same keel.

[0010] Preferably, the two ends of the mounting protrusion are respectively provided with frame mounting holes. The horizontal base plate is provided with two mounting holes. One mounting hole is located in the limiting part, and the other mounting hole is located in the buckle mounting part.

[0011] The mounting frame is connected with the shell through fasteners passing through the mounting holes located in the limiting part and the frame mounting holes.

[0012] The mounting frame is connected with the mounting buckle through fasteners passing through the mounting holes located in the buckle mounting part.

[0013] Preferably, the material of the mounting frame is plastic.

[0014] Preferably, the mounting buckle comprises a buckle plate and two elastic arms. The two elastic arms are respectively arranged at the two ends of the bottom of the buckle plate.

[0015] The top end of the elastic arm is connected with the buckle plate. The middle part of the elastic arm is provided with a buckle part. The bottom end of the elastic arm is provided with a handle part. The handle part extends in the opposite direction of the protruding direction of the buckle part. The buckle parts of the two elastic arms are arranged in opposite directions.

[0016] Preferably, the buckle plate is provided with a buckle mounting hole. The mounting buckle is connected with the mounting frame through fasteners passing through the buckle mounting hole.

[0017] Preferably, the ventilation fan further comprises a cover plate and two torsion springs, the two torsion springs are symmetrically arranged on the cover plate, the cover plate is buckled on the lower part of the shell through the torsion springs, and the bottom of the cover plate is flush with the bottom of the integrated ceiling.

[0018] Preferably, the torsion spring comprises a torsion spring body and two torsion arms, the torsion spring body is a columnar spring structure, the two torsion arms are arranged at two ends of the torsion spring body, the torsion spring body is installed on the top surface of the cover plate, and the two torsion arms extend upward in opposite directions;

[0019] The shell is provided with a clamping groove for accommodating one end of the torsion arm away from the torsion spring body.

[0020] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0021] The four mounting structures buckle to install the four corners of the ventilation fan shell, so that the ventilation fan can be installed on the integrated ceiling without any modification or drilling, which not only protects the integrity of the ventilation fan, but also avoids performance loss or safety hazards that may be caused by modification. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of an embodiment of the utility model;

[0023] Figure 2 is Figure 1 is an enlarged schematic view of A in figure 1;

[0024] Figure 3 is a schematic view of the mounting structure of the utility model;

[0025] Figure 4 is a schematic view of the mounting structure of the utility model from another angle;

[0026] Figure 5 is a schematic view of the mounting buckle of the utility model;

[0027] Figure 6 is a front view of the mounting structure and ventilation fan of an embodiment of the utility model before assembly;

[0028] Figure 7 is Figure 6 is three assembly state schematic views of B in figure 2;

[0029] Figure 8 is a structure schematic view of the cover plate and the shell of an embodiment of the utility model before assembly.

[0030] Wherein: ventilation fan 10, shell 11, side wall 111, mounting convex edge 112, frame mounting hole 1121, clamping groove 113, cover plate 12, torsional spring 13, torsional spring body 131, torsional arm 132, mounting structure 20, mounting frame 21, limiting part 2101, clamping part 2103, buckle mounting part 2104, horizontal base plate 211, mounting hole 2110, limiting plate 212, clamping block 213, vertical plate 2131, horizontal plate 2132, mounting buckle 22, buckle plate 221, buckle mounting hole 2211, elastic arm 222, clamping part 2221, handle part 2222 and keel 9. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0033] In addition, the terms "first", "second" and "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" and "third" can explicitly or implicitly include one or more of the features.

[0034] It should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The technical scheme of the present application is described below in conjunction with the drawings Figures 1 to 8 The technical scheme of the present application is described below in conjunction with the drawings

[0036] The utility model provides a ventilation fan applied to integrated ceiling, including ventilation fan 10 and four mounting structures 20, ventilation fan 10 is installed on integrated ceiling through mounting structure 20, and integrated ceiling includes several interval arrangement keels 9;

[0037] Ventilation fan 10 includes square casing 11, mounting structure 20 includes mounting bracket 21 and mounting buckle 22, and mounting buckle 22 is installed on the bottom of mounting bracket 21, and mounting bracket 21 is buckled to casing 11, and mounting buckle 22 is buckled to keel 9, and four mounting bracket 21 are installed on four corners of casing 11 respectively, and two mounting buckles 22 on the same side are installed on the same keel 9.

[0038] The utility model discloses an independent mounting structure 20, makes ventilation fan 10 not need to carry out any reform or drilling and can be installed on integrated ceiling.This not only protects the integrity of ventilation fan 10, but also avoids the performance loss or security risk that may be caused by reform.

[0039] Every mounting structure 20 includes mounting bracket 21 and mounting buckle 22, and four mounting structures 20 are installed on four corners of ventilation fan casing 11 respectively, and this kind of layout helps the even distribution of the weight and stress of ventilation fan 10, thereby enhancing the structural stability and safety of ventilation fan 10 on integrated ceiling.

[0040] Since mounting structure 20 is designed independently of ventilation fan 10, it can be applied to various specifications and models of ventilation fan 10, as long as the casing shape and size of ventilation fan 10 meet the requirements, it can be conveniently installed on integrated ceiling through mounting structure 20. This improves the versatility and flexibility of ventilation fan 10.

[0041] Since ventilation fan 10 is conveniently fixed on the keel 9 of integrated ceiling through mounting structure 20, when ventilation fan 10 needs to be maintained or replaced, it can be easily disassembled and reinstalled without disassembling the entire integrated ceiling, thereby saving maintenance cost and time.

[0042] In summary, the utility model discloses an independent mounting structure 20, effectively improves the installation flexibility, compatibility, structural stability and safety of ventilation fan 10 in integrated ceiling environment, and is convenient for subsequent maintenance and replacement, and has important practical application value.

[0043] Further, the shell 11 comprises four side walls 111 and four mounting protrusions 112, the four side walls 111 are square, one mounting protrusion 112 is arranged at the bottom of one side wall 111, the mounting protrusion 112 extends towards the outside of the shell 11, and four mounting racks 21 are respectively arranged at the two ends of two oppositely arranged mounting protrusions 112;

[0044] The mounting rack 21 comprises a horizontal base plate 211, two limiting plates 212 and a clamping block 213; the horizontal base plate 211 is horizontally arranged, and the two limiting plates 212 are arranged on the two sides of the top of the horizontal base plate 211 to form a limiting part 2101; the clamping block 213 comprises a vertical plate 2131 and a horizontal plate 2132, the vertical plate 2131 is vertically arranged on the top surface of the horizontal base plate 211, and the horizontal plate 2132 is arranged on the top of the vertical plate 2131, the horizontal plate 2132 is perpendicular to the vertical plate 2131, the horizontal plate 2132 extends towards the limiting part 2101, and the clamping block 213 and the horizontal base plate 211 form a clamping part 2103; the bottom of one end of the horizontal base plate 211 away from the limiting plate 212 is a buckle mounting part 2104, and the buckle mounting part 2104 is used for mounting the mounting buckle 22;

[0045] When the mounting rack 21 is connected with the shell 11, the top surface of the horizontal base plate 211 abuts against the bottom surface of the mounting protrusion 112, the two limiting plates 212 abut against the two sides of the mounting protrusion 112 respectively, one limiting plate 212 is located inside the shell 11, and the other limiting plate 212 is located outside the shell 11, the vertical plate 2131 abuts against one end of the mounting protrusion 112, the bottom surface of the horizontal plate 2132 abuts against the top surface of the mounting protrusion 112, the buckle mounting part 2104 is located outside the shell 11, and the mounting buckle 22 arranged at the same end of two oppositely arranged mounting protrusions 112 is mounted on the same keel 9.

[0046] The long plate structure of the mounting frame 21 and the limiting portion 2101, the clamping portion 2103 and the buckle mounting portion 2104 arranged in the length direction make the functions of each part of the mounting frame 21 more clear, and make the installation process of the mounting frame 21 more simple and fast. The limiting portion 2101 can act on the inner and outer sides of the installation protruding edge 112, ensuring that the mounting frame 21 and the shell 11 (the air exchanger 10) cannot shake relative to each other in the front-back direction; the clamping portion 2103 can be clamped at one end of the installation protruding edge 112, and the two mounting frames 21 at the two ends of the installation protruding edge 112 jointly act to prevent the shell 11 (the air exchanger 10) from moving left and right, and this multiple limiting and clamping design significantly improves the stability of the air exchanger 10 during installation, reducing the risk of loosening due to vibration or external force; finally, after the mounting frame 21 is buckled and mounted on the shell 11 (the installation protruding edge 112), the buckle mounting portion 2104 of the mounting frame 21 is located on the outside of the shell 11, and the installation buckle 22 is installed on the buckle mounting portion 2104 at the bottom of the mounting frame 21, facilitating the installation of the air exchanger as a whole on the joist 9 of the integrated ceiling by the installation buckle 22.

[0047] By installing two mounting frames 21 at the two ends of the two oppositely arranged installation protruding edges 112 respectively, and installing the installation buckles 22 at the same end of the two oppositely arranged installation protruding edges 112 on the same joist 9, not only space is saved, but also the installation of the air exchanger 10 on the integrated ceiling is more compact and neat, and the stability of the air exchanger 10 on the integrated ceiling is improved, and the wind pressure resistance and service life are enhanced. At the same time, this installation method also facilitates later maintenance and replacement, reducing the use cost.

[0048] It is worth noting that the installation protruding edge 112 at the bottom of the shell 11 is not a structure obtained after the air exchanger 10 is modified, and this horizontally outwardly extending installation protruding edge 112 is commonly present in the shell structure of the air exchanger 10. The installation protruding edge 112 is used to connect with the ceiling during the installation of the traditional gypsum ceiling or wooden frame ceiling, or is connected with the integrated ceiling by screws during the installation of the integrated ceiling.

[0049] Further, the mounting frame 21 is composed of a horizontal base plate 211, two limiting plates 212 and a clamping block 213, forming a multiple limiting and supporting structure. The horizontal base plate 211 provides a stable base, and the two limiting plates 212 limit the installation protruding edge 112 from both sides (inside and outside), effectively preventing the air exchanger 10 from moving forward and backward during installation. The inverted L-shaped design of the vertical plate 2131 and the horizontal plate 2132 of the clamping block 213 further enhances the fixing effect of the mounting frame 21 on the installation protruding edge 112, making the air exchanger 10 more stably installed on the integrated ceiling.

[0050] The structural design of the mounting bracket 21 makes the installation process between the mounting bracket 21 and the housing 11 more intuitive and convenient. The installer simply places the horizontal base plate 211 of the mounting bracket 21 on the bottom surface of the mounting flange 112, and then adjusts the positions of the limiting plate 212 and the locking block 213 to ensure a tight fit with the mounting flange 112. This design reduces the complexity and uncertainty of the installation process, improving the convenience and operability of installation. Please refer to [reference needed]. Figure 6 and Figure 7 , Figure 7 B-1, B-2, and B-3 in the text are respectively Figure 6 A schematic diagram of the assembly process of the mounting bracket 21 and the housing 11 at point B. Specifically, as shown in B-1, the mounting bracket 21 moves from below the mounting protrusion 112 upwards, so that the two limiting plates 212 of the limiting part 2101 are respectively located on the front and rear (inner and outer) sides of the mounting protrusion 112, so that the mounting bracket 21 and the housing 11 are in the state shown in B-2; as shown by the arrow in B-2, the mounting bracket 21 is moved to the left, so that the locking block 213 moves to the state shown in B-3. At this time, the vertical plate 2131 of the locking block abuts against the end of the mounting protrusion 112, and the bottom surface of the horizontal plate 2132 abuts against the top surface of the mounting protrusion 112. The state in B-3 indicates that the mounting bracket 21 and the housing 11 are installed and connected. Since the locking part 2103 is locked onto the end, top surface and bottom surface of the mounting protrusion 112, the mounting bracket 21 cannot detach from the housing 11 at the bottom, ensuring the stability and firmness of the connection between the mounting bracket 21 and the housing 11. When removing, simply slide the mounting bracket 21 to the right relative to the mounting protrusion 112 (housing 11), so that the mounting protrusion 112 disengages from the latch of the locking part 2103, and the mounting bracket 21 can move downward and disengage from the mounting connection with the housing 11.

[0051] To further explain, by refining the structure of the mounting bracket 21, such as the abutment between the horizontal base plate 211 and the bottom surface of the mounting flange 112, the limiting plate 212 limiting the two sides of the mounting flange 112, the abutment between the vertical plate 2131 and one end of the mounting flange 112, and the abutment between the bottom surface of the horizontal plate 2132 and the top surface of the mounting flange 112, high precision is ensured during installation. This precise installation positioning helps reduce installation errors and improves the performance of the ventilation fan.

[0052] Furthermore, the mounting flange 112 has mounting holes 1121 at both ends, and the horizontal base plate 211 has two mounting holes 2110, one of which is located in the limiting part 2101, and the other is located in the snap-fit ​​mounting part 2104.

[0053] The mounting bracket 21 is connected to the housing 11 by fasteners passing through the mounting hole 2110 located in the limiting part 2101 and the bracket mounting hole 1121;

[0054] The mounting bracket 21 is connected with the mounting buckle 22 through fasteners passing through the mounting holes 2110 located at the buckle mounting portion 2104.

[0055] By setting bracket mounting holes 1121 at both ends of the mounting protrusion 112 and setting two mounting holes 2110 (one located at the limiting portion 2101 and the other located at the buckle mounting portion 2104) on the horizontal base plate 211, the mounting bracket 21 can be firmly connected with the housing 11 and the mounting buckle 22 through fasteners (such as screws). This not only improves the stability and reliability of the installation, but also ensures the stability and safety of the ventilation fan 10 after installation.

[0056] By setting bracket mounting holes 1121 at both ends of the mounting protrusion 112 and setting corresponding mounting holes 2110 on the horizontal base plate 211, and then using fasteners (such as screws) to pass through the mounting holes 2110 located at the limiting portion 2101 and the bracket mounting holes 1121, the connection between the mounting bracket 21 and the housing 11 can be made more secure. This design, based on the original buckle structure connection method, combined with the locking of fasteners, can further strengthen the connection strength between the mounting bracket 21 and the housing 11, effectively prevent the mounting bracket 21 from loosening or falling off during installation, and improve the overall stability of the ventilation fan.

[0057] The horizontal base plate 211 is also provided with a mounting hole 2110 at the position of the buckle mounting portion 2104, so that the mounting bracket 21 and the mounting buckle 22 are connected through fasteners (such as screws), which can ensure the quick assembly of the mounting structure 20 and the compatibility of different sizes of mounting buckles 22 (different sizes of keels correspond to different mounting buckles 22) and the mounting bracket 21.

[0058] Further, the material of the mounting bracket 21 is plastic.

[0059] Plastic material has the characteristics of light weight and high strength, which makes the mounting bracket 21 relatively light in weight while maintaining sufficient strength. This not only helps to reduce the overall weight of the ventilation fan and reduce the load pressure on the integrated ceiling, but also helps to improve the convenience of installation and disassembly. In addition, plastic material has good insulation performance, which makes the mounting bracket 21 have certain advantages in electrical safety. During the operation of the ventilation fan 10, the plastic mounting bracket 21 can effectively isolate the current and prevent electrical faults or electric shock accidents.

[0060] Further, the mounting buckle 22 includes a buckle plate 221 and two elastic arms 222, and the two elastic arms 222 are respectively arranged at both ends of the bottom of the buckle plate 221.

[0061] The top end of the elastic arm 222 is connected with the buckle plate 221, the middle part of the elastic arm 222 is provided with a buckle part 2221, the bottom end of the elastic arm 222 is provided with a handle part 2222, the handle part 2222 extends in the opposite direction of the buckle part 2221, and the buckle parts 2221 of the two elastic arms 222 are oppositely arranged.

[0062] The mounting buckle 22 adopts the structural design of the buckle plate 221 and the two elastic arms 222, the buckle part 2221 of the elastic arm 222 can be firmly buckled on the keel 9 or other fixed structure, effectively preventing the loosening or falling off of the ventilation fan during the installation process. This design improves the connection stability between the ventilation fan and the integrated ceiling, ensuring the stable operation of the ventilation fan 10. The bottom end of the elastic arm 222 is provided with a handle part 2222, which is convenient for the installer to operate during installation or disassembly. By pulling the handle part 2222, the elastic arm 222 can be elastically deformed, thereby conveniently buckling into or out of the keel 9. This design simplifies the installation steps and improves the convenience and efficiency of installation.

[0063] Further, the buckle plate 221 is provided with a buckle mounting hole 2211, and the mounting buckle 22 is connected with the mounting frame 21 through the fastener passing through the buckle mounting hole 2211.

[0064] By setting the buckle mounting hole 2211 on the buckle plate 221 and connecting the mounting buckle 22 with the mounting frame 21 using a fastener, the precision and stability during installation can be ensured. The use of fasteners provides stable fixing force, preventing the mounting buckle 22 from shifting or loosening during installation, thereby improving the stability of the ventilation fan as a whole.

[0065] The mounting buckle 22 and the mounting frame 21 are connected through a fastener (such as a screw), forming a more compact and stable structural whole. This design not only enhances the wind pressure resistance and anti-seismic performance of the ventilation fan, but also reduces noise and vibration problems caused by loose structure, improving the reliability and service life of the product.

[0066] Further, the ventilation fan 10 further comprises a cover plate 12 and two torsion springs 13, the two torsion springs 13 are symmetrically arranged on the cover plate 12, the cover plate 12 is buckled on the lower part of the shell 11 through the torsion springs 13, and the bottom of the cover plate 12 is flush with the bottom of the integrated ceiling.

[0067] By designing the cover plate 12, it can cover the lower part of the ventilation fan shell 11 and be flush with the bottom of the integrated ceiling, so as to realize the seamless connection of the ventilation fan and the integrated ceiling in vision, and improve the overall beauty and coordination.

[0068] The cover plate 12 is buckled on the lower part of the shell 11 by the torsion spring 13, which increases the stability of the air exchange fan structure and prevents the cover plate 12 from being easily opened due to vibration or external force. The elasticity and resilience of the torsion spring 13 ensure the stability of the cover plate 12 when it is closed, thereby improving the overall durability and safety of the air exchange fan 10.

[0069] Further, the torsion spring 13 comprises a torsion spring body 131 and two torsion arms 132, the torsion spring body 131 is a columnar spring structure, and the two torsion arms 132 are arranged at two ends of the torsion spring body 131, the torsion spring body 131 is installed on the top surface of the cover plate 12, and the two torsion arms 132 extend upwardly and oppositely.

[0070] The shell 11 is provided with a clamping groove 113 for accommodating one end of the torsion arm 132 away from the torsion spring body 131.

[0071] The design of the torsion spring 13 makes the connection between the cover plate 12 and the shell 11 more stable. The torsion spring body 131 is a columnar spring structure, providing stable elastic force, and the two torsion arms 132 extend upwardly and oppositely. In specific installation, the two oppositely extending torsion arms 132 are relatively close to each other, and the end portions of the two torsion arms 132 are clamped into the clamping groove 113 of the shell. After the torsion arms 132 are loosened, the torsion arms 132 are clamped in the clamping groove 113 under the action of elastic force, effectively preventing the loosening or falling off of the cover plate 12 under vibration or external force.

[0072] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the above explanations, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the present application.

Claims

1. A ventilation fan applied to an integrated ceiling, characterized by: The ventilation fan is installed on an integrated ceiling through four mounting structures, and the integrated ceiling comprises several spaced keels. The ventilation fan comprises a square shell, and the mounting structures comprise mounting racks and mounting buckles.

2. The ventilation fan applied to the integrated ceiling according to claim 1, characterized in that: The shell comprises four side walls and four mounting protrusions. The mounting racks comprise horizontal base plates, two limiting plates and clamping blocks. When the mounting racks are connected to the shell, the top surface of the horizontal base plate abuts against the bottom surface of the mounting protrusion, the two limiting plates abut against the two sides of the mounting protrusion respectively, one limiting plate is located inside the shell, and the other limiting plate is located outside the shell.

3. The ventilation fan for integrated ceiling according to claim 2, characterized in that: The two ends of the mounting protrusion are respectively provided with rack mounting holes. The horizontal base plate is provided with two mounting holes. The mounting racks are connected to the shell through fasteners passing through the mounting holes in the limiting portions and the rack mounting holes.

4. The ventilation fan for integrated ceiling according to claim 3, characterized in that: The mounting racks are connected to the mounting buckles through fasteners passing through the mounting holes in the buckle mounting portions.

5. A ventilating fan for integrated ceiling according to any one of claims 1-4, characterized in that: The material of the mounting racks is plastic. The mounting buckles comprise buckle plates and two elastic arms.

6. The ventilating fan for integrated ceiling according to claim 5, characterized in that: The top end of the elastic arm is connected to the buckle plate. The buckle plate is provided with a buckle mounting hole. The mounting buckles are connected to the mounting racks through fasteners passing through the buckle mounting hole.

7. The ventilation fan for integrated ceiling according to claim 1, characterized in that: The ventilation fan further comprises a cover plate and two torsion springs, the two torsion springs are symmetrically arranged on the cover plate, the cover plate is buckled on the lower part of the shell through the torsion springs, and the bottom of the cover plate is flush with the bottom of the integrated ceiling.

8. A ventilating fan for use in an integrated ceiling according to claim 7, characterized in that: The torsion spring comprises a torsion spring body and two torsion arms, the torsion spring body is a columnar spring structure, the two torsion arms are arranged at two ends of the torsion spring body, the torsion spring body is installed on the top surface of the cover plate, and the two torsion arms extend upward in a direction opposite to each other. The shell is provided with a clamping groove, and the clamping groove is used for accommodating one end of the torsion arm away from the torsion spring body.

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