A window fan that is easy to assemble

Abstract

A window fan is easy to assemble, comprising a bottom frame, several fan mounting frames and several fans, the fan mounting frames are detachably buckled from bottom to top, one fan is placed in each fan mounting frame, the bottom frame is hollow and open at the top, each fan mounting frame is through from top to bottom, the bottom of the lowest fan mounting frame is buckled with a connecting piece, the connecting piece is connected in the bottom frame, the connecting piece and the lowest fan mounting frame can move up and down in the bottom frame, the bottom of the connecting piece is provided with an elastic piece, the bottom of the elastic piece is in contact with the inner bottom surface of the bottom frame, the bottom surface of the bottom frame is connected with a base installed at the bottom of the window, the top of the uppermost fan mounting frame is buckled with a top cover, the top of the top cover is connected with a top base installed at the top of the window. Compared with the existing window exhaust fan, the utility model is more convenient to assemble, and a lot of installation time can be saved.

Description

Technical Field

[0001] This utility model relates to a window fan, specifically a window fan that is easy to assemble. Background Technology

[0002] Window exhaust fans are a very common and practical household appliance, whose core function is to actively expel stale indoor air to the outside. Existing window exhaust fans include a base frame, two profiles, two mesh panels, several fans, and a top cover. The bottom of each of the two profiles is connected to a first spring connecting plate, and the bottom of the base frame is connected to a second spring connecting plate. A spring connects the first and second spring connecting plates. The bottoms of the two profiles are located within the base frame, and the several fans are secured between the two profiles. The two mesh panels cover the two sides of the fans, and the top cover is connected between the tops of the two profiles.

[0003] The existing window exhaust fan requires the two ends of the spring to be clipped onto the first spring connecting plate and the second spring connecting plate respectively during assembly. Then, the bottom frame is connected to the second spring connecting plate with screws from the bottom. After the two mesh panels and several fans are placed between the two profiles, the top cover is locked to the two profiles with screws. As can be seen, the existing window exhaust fan has a complicated assembly process, which takes a lot of time whether the manufacturer assembles it or the user assembles it themselves. Utility Model Content

[0004] This utility model provides a window fan that is easy to assemble, and its main purpose is to overcome the problems of cumbersome assembly and inconvenient maintenance of existing window exhaust fans.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A window fan that is easy to assemble includes a base frame, several fan mounting frames, and several fans. The fan mounting frames are detachably connected from bottom to top. Each fan mounting frame contains one fan. The base frame is hollow with an open top. Each fan mounting frame is vertically continuous. The bottom of the lowest fan mounting frame is connected to a connector that is inside the base frame. The connector and the lowest fan mounting frame can move up and down within the base frame. The bottom of the connector has an elastic element that abuts against the inner bottom surface of the base frame. The bottom surface of the base frame is connected to a base that is installed at the bottom of the window. The top of the highest fan mounting frame is connected to a top cover that is connected to a top mount that is installed at the top of the window.

[0006] Furthermore, each fan mounting frame has a first slot at its bottom and a first buckle at its top, with the first buckles of two adjacent fan mounting frames engaging within the first slots.

[0007] Furthermore, the upper second buckle of the connector is engaged in the first slot of the lowest fan mounting frame; the lower part of the top cover is provided with a second slot, and the first buckle of the uppermost fan mounting frame is engaged in the second slot of the top cover.

[0008] Furthermore, the lower part of the left and right inner sides of the bottom frame is provided with a retaining block, and the bottom left and right ends of the connector are provided with elastic pieces located inside the bottom frame. The bottom of the elastic piece is provided with a hook, and the hook hooks onto the bottom surface of the retaining block.

[0009] Furthermore, the bottom of the connector is provided with a first locking plate and / or a second locking plate. The first locking plate is provided with at least one first locking hole, and the second locking plate is provided with at least one second locking hole. The front end face of the bottom frame is provided with several through holes. Each first locking hole and each second locking hole corresponds to one through hole. The bottom frame can be fitted with a first screw and / or a second screw. The first screw passes through the through hole and is threaded to the first locking hole, and the second screw passes through the through hole and is threaded to the second locking hole.

[0010] Furthermore, the bottom of the base is provided with a bottom slot that engages with the bottom of the window, and the top of the top seat is provided with a top slot that engages with the top of the window.

[0011] Furthermore, the base is rotatably connected to the bottom of the base frame at multiple angles, and the top seat is rotatably connected to the top of the top cover at multiple angles.

[0012] Furthermore, the top surface of the base is provided with a first hook, the outer periphery of the first hook is provided with a plurality of first tooth grooves, the bottom of the base frame is provided with a first mounting hole, the first hook passes through the first mounting hole and hooks onto the inner bottom surface of the base frame, the outer periphery of the first mounting hole is provided with a first elastic locking rod, the first elastic locking rod is locked in the first tooth groove.

[0013] Furthermore, the bottom surface of the top seat is provided with a second hook, and the outer periphery of the second hook is provided with a plurality of second tooth grooves. The top cover is hollow and has an open bottom structure. The top of the top cover is provided with a second mounting hole. After the second hook passes through the second mounting hole, it hooks onto the inner top surface of the top cover. The outer periphery of the second mounting hole is provided with a plurality of second elastic locking rods, and the second elastic locking rods are locked in the second tooth grooves.

[0014] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages: During installation, the connector is first fastened to the bottommost fan mounting frame, then the connector is connected inside the bottom frame. Next, several fans are electrically connected in sequence, and then several fan mounting frames are fastened in sequence. Finally, the top cover is fastened to the topmost fan mounting frame, thus completing the assembly of the window fan. Compared with existing window exhaust fans, this utility model is simpler to assemble and can save a significant amount of installation time. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention.

[0016] Figure 2 This is a structural diagram of the present invention from another angle.

[0017] Figure 3 This is an exploded view of the structure of this utility model.

[0018] Figure 4 This is an exploded view of the structure of this utility model from another angle.

[0019] Figure 5 This is a structural diagram of the base frame of this utility model.

[0020] Figure 6 This is a structural diagram of the connector of this utility model.

[0021] Figure 7 This is a structural diagram of the base of this utility model.

[0022] Figure 8 This is a structural diagram of the bottom frame of this utility model from another angle.

[0023] Figure 9 This is a structural diagram of the fan mounting frame of this utility model.

[0024] Figure 10 This is an exploded view of the top cover and top seat of this utility model. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Reference Figures 1 to 3 A window fan that is easy to assemble includes a base frame 1, several fan mounting frames 2, and several fans 3. The fan mounting frames 2 are detachably fastened together from bottom to top, and each fan mounting frame 2 houses one fan 3. The base frame 1 is hollow with an open top. Each fan mounting frame 2 is vertically continuous. The bottom of the lowest fan mounting frame 2 is fastened with a connector 4, which is connected to the bottom of the base frame 1. The connector 4 and the lowest fan mounting frame 2 can move up and down within the base frame 1. The bottom of the connector 4 has an elastic element 41, the bottom of which abuts against the inner bottom surface of the base frame 1. The bottom surface of the base frame 1 is connected to a base 5 installed at the bottom of the window. The top of the uppermost fan mounting frame 2 is fastened with a top cover 6, and the top of the top cover 6 is connected to a top mount 7 installed at the top of the window. The base frame 1, fan mounting frames 2, connector 4, base 5, top cover 6, and top mount 7 are all made of plastic. The elastic element 41 can be integrally formed with the connecting element 4, or it can be a spring connected to the connecting element 4.

[0029] Reference Figure 2 , Figure 3 , Figure 4 and Figure 9Each fan mounting frame 2 has a first slot 21 at its bottom and a first buckle 22 at its top. The first buckles 22 of two adjacent fan mounting frames 2 are engaged in the first slot 21. In this embodiment, the bottom of each fan mounting frame 2 has two rows of first slots 21 arranged front to back, and each row of first slots 21 is composed of multiple first slots 21 arranged left to right. The top of each fan mounting frame 2 has two rows of first buckles 22 arranged front to back, and each row of first buckles 22 is composed of multiple first buckles 22 arranged left to right. Each row of first buckles 22 corresponds to one row of first slots 21, and the first buckles 22 of two adjacent fan mounting frames 2 are engaged in the corresponding first slots 21.

[0030] Reference Figure 3 , Figure 4 , Figure 6 , Figure 9 and Figure 10 The upper part of the connector 4 has a second buckle 42, which is engaged in the first slot 21 of the lowest fan mounting frame 2. The lower part of the top cover 6 has a second slot 61, and the first buckle 22 of the uppermost fan mounting frame 2 is engaged in the second slot 61 of the top cover 6. In this embodiment, the upper part of the connector 4 has two rows of second buckles 42 arranged front to back, each row of second buckles 42 corresponding to a row of first slots 21. The second buckles 42 of the connector 4 are engaged in the first slot 21 of the lowest fan mounting frame 2. The connector 4 is hollow and has an open top structure. The lower part of the top cover 6 has two rows of second slots 61 arranged front to back, each row of second slots 61 corresponding to a row of first buckles 22. The first buckle 22 of the uppermost fan mounting frame 2 is engaged in the second slot 61 of the top cover 6. The top cover 6 is hollow and has an open bottom structure.

[0031] Reference Figures 3 to 6 The bottom frame 1 has a retainer 11 on the lower part of its left and right inner sides. The bottom left and right ends of the connector 4 have elastic pieces 43 located inside the bottom frame 1. The bottom of the elastic piece 43 has a hook 44, which hooks onto the bottom surface of the retainer 11. The bottom surface of the hook 44 is a first inclined surface, and the top surface of the retainer 11 is a second inclined surface that fits into the first inclined surface. When the connector 4 is connected to the bottom frame 1, when the elastic piece 43 descends to the point where the bottom surface of the hook 44 abuts against the top surface of the retainer 11, the elastic piece 43 will deform under the cooperation of the first and second inclined surfaces. As the elastic piece 43 continues to descend, it returns to its original shape, and the hook 44 hooks onto the bottom surface of the retainer 11. When the fan mounting frame 2 is pressed down, the connector 4 descends, and the elastic element 41 is compressed. When the fan mounting frame 2 is released, the connector 4 and the fan mounting frame 2 automatically rise and reset under the action of the elastic force of the elastic element 41.

[0032] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 9 When assembling this window fan, first fasten the connector 4 to the bottommost fan mounting frame 2, then connect the connector 4 inside the bottom frame 1. Next, electrically connect several fans 3 in sequence, then fasten several fan mounting frames 2 in sequence. Finally, fasten the top cover 6 to the topmost fan mounting frame 3. This completes the assembly of the window fan. The number of fan mounting frames 2 and fans 3 depends on the height of the window.

[0033] Reference Figure 1 , Figure 4 , Figure 6 and Figure 8 The bottom of the connector 4 is provided with a first locking plate 45 and / or a second locking plate 46. The first locking plate 45 is provided with at least one first locking hole 47, and the second locking plate 46 is provided with at least one second locking hole 48. The front end face of the bottom frame 1 is provided with several through holes 13, and each first locking hole 47 and each second locking hole 48 corresponds to one through hole 13. A first screw and / or a second screw can be threaded through the bottom frame 1. The first screw passes through the through hole 13 and is threaded to the first locking hole 47, and the second screw passes through the through hole 13 and is threaded to the second locking hole 48. In this embodiment, the bottom of the connector 4 is provided with two first locking plates 45 arranged in front and rear and one second locking plate 46. The two first locking plates 45 are respectively distributed on the left and right sides of the second locking plate 46. The first locking plate 45 is provided with multiple first locking holes 47 arranged vertically, and the second locking plate 46 is provided with multiple second locking holes 48 arranged vertically. The front end face of the bottom frame 1 is provided with several through holes 13. Each first locking hole 47 and each second locking hole 48 corresponds to one through hole 13. Multiple first screws and multiple second screws can be passed through the bottom frame 1. The first screws pass through the through holes 13 and are threadedly connected to the first locking holes 47, and the second screws pass through the through holes 13 and are threadedly connected to the second locking holes 48. After the window fan is installed on the window, the bottom frame 1 and the connecting piece 4 are fixed by the first screws, and the head of the first screw is located on the end face of the bottom frame 1 facing the interior. After the bottom frame 1 and the connecting piece 4 are fixed, the fan mounting frame 2 cannot be lowered. The purpose of this is to prevent accidental lowering of the fan mounting frame 2 and detachment from the window. Another purpose is to prevent thieves from lowering the fan mounting frame 2 and stealing the window fan when the window fan is installed on a low-floor window. In this installation case, the fan 3 exhausts indoor air to the outside. Of course, several of the fan mounting frames 2 can also be rotated 180° in the vertical direction for installation. In this case, the second screw will fix the bottom frame 1 and the connector 4. In this installation case, the fan 3 will exhaust outdoor air into the room.

[0034] Reference Figure 1 and Figure 2 The base 5 has a bottom slot 51 for engaging with the bottom of the window, and the top seat 7 has a top slot 71 for engaging with the top of the window. When installing the window fan, first, the bottom of the window is engaged in the bottom slot 51, then the fan mounting frame 2 is pressed down so that the top seat 7 is positioned below the top of the window. Finally, the fan mounting frame 2 is released, allowing it to automatically reset and the top slot 71 of the top seat 7 to engage with the top of the window.

[0035] Reference Figures 1 to 4 , Figure 7 , Figure 8 and Figure 10 The base 5 is rotatably connected to the bottom of the base frame 1 at multiple angles, and the top seat 7 is rotatably connected to the top of the top cover 6 at multiple angles. The top surface of the base 5 is provided with a first hook portion 53, and the outer periphery of the first hook portion 53 is provided with multiple first toothed grooves 54. The bottom of the base frame 1 is provided with a first mounting hole 14. The first hook portion 53 passes through the first mounting hole 14 and hooks onto the inner bottom surface of the base frame 1. Three first elastic locking rods 15 are spaced apart on the outer periphery of the first mounting hole 14 and are engaged within the first toothed grooves 54. In this embodiment, the first hook portion 53 is provided with multiple annularly arranged first cutting grooves 52, which divide the first hook portion 53. The divided first hook portion 53 is elastic. Each first elastic locking rod 15 has a second cutting groove 16 on both sides, allowing the first elastic locking rod 15 to be elastic and have room for deformation and movement. The bottom of the base frame 1 is provided with a power interface 17. Multiple fans 3 are sequentially electrically connected to the power interface 17, which is connected to a power cord with a controller. The bottom surface of the top seat 7 is provided with a second hook 73. Multiple second toothed grooves 74 are provided on the outer periphery of the second hook 73. The top cover 6 is hollow with an open bottom. The top of the top cover 6 is provided with a second mounting hole 62. The second hook 73 passes through the second mounting hole 62 and hooks onto the inner top surface of the top cover 6. Three second elastic locking rods 63 are provided on the outer periphery of the second mounting hole 62, and the second elastic locking rods 63 are engaged within the second toothed grooves 74. In this embodiment, the second hook 73 is provided with multiple annularly arranged third grooves 72. These third grooves 72 cut the second hook 73, making the cut second hook 73 elastic. Each second elastic locking rod 63 has a fourth groove 64 on both sides, allowing the second elastic locking rod 63 to be elastic and have room for deformation and movement.

[0036] Reference Figures 1 to 4 , Figure 7 , Figure 8 and Figure 10This window fan is angle-adjustable. After the base 5 and top seat 7 are fixed to the window, the bottom frame 1 and fan mounting frame 2 can rotate to adjust the angle of the window fan. When the bottom frame 1 and fan mounting frame 2 rotate, the first elastic locking rod 15 and the second elastic locking rod 63 can deform and disengage from the original mating first tooth groove 54 and second tooth groove 74, respectively. When the bottom frame 1 and fan mounting frame 2 rotate to the desired angle, the first elastic locking rod 15 and the second elastic locking rod 63 respectively engage in the newly mating first tooth groove 54 and second tooth groove 74. This window fan can be installed on sliding windows or casement windows. When installed on casement windows, the angle of the bottom frame 1 and fan mounting frame 2 can be adjusted according to the opening angle of the casement window.

[0037] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A window fan that is easy to assemble, characterized in that: The device includes a base frame, several fan mounting frames, and several fans. The fan mounting frames are detachably connected from bottom to top. Each fan mounting frame contains one fan. The base frame is hollow with an open top. Each fan mounting frame is vertically connected. The bottom of the lowest fan mounting frame is connected to a connector, which is attached to the base frame. The connector and the lowest fan mounting frame can move up and down within the base frame. The bottom of the connector has an elastic element that abuts against the inner bottom surface of the base frame. The bottom surface of the base frame is connected to a base installed at the bottom of the window. The top of the highest fan mounting frame is connected to a top cover, which is connected to a top mount installed at the top of the window.

2. The window fan with easy assembly as described in claim 1, characterized in that: Each fan mounting frame has a first slot at the bottom and a first buckle at the top. The first buckles of two adjacent fan mounting frames are engaged in the first slot.

3. A window fan that is easy to assemble as described in claim 2, characterized in that: The upper part of the connector has a second buckle, which is engaged in the first slot of the lowest fan mounting frame; the lower part of the top cover has a second slot, and the first buckle of the uppermost fan mounting frame is engaged in the second slot of the top cover.

4. A window fan that is easy to assemble as described in claim 1, characterized in that: The lower part of the left and right inner sides of the base frame is provided with a stop, and the bottom left and right ends of the connector are provided with elastic pieces located inside the base frame. The bottom of the elastic piece is provided with a hook, and the hook hooks onto the bottom surface of the stop.

5. A window fan that is easy to assemble as described in claim 1, characterized in that: The bottom of the connector is provided with a first locking plate and / or a second locking plate. The first locking plate is provided with at least one first locking hole, and the second locking plate is provided with at least one second locking hole. The front end face of the bottom frame is provided with several through holes. Each first locking hole and each second locking hole corresponds to one through hole. The bottom frame can be provided with a first screw and / or a second screw. The first screw passes through the through hole and is threaded to the first locking hole. The second screw passes through the through hole and is threaded to the second locking hole.

6. A window fan that is easy to assemble as described in claim 1, characterized in that: The base has a bottom slot for engaging with the bottom of the window, and the top seat has a top slot for engaging with the top of the window.

7. A window fan that is easy to assemble as described in claim 1, characterized in that: The base is rotatably connected to the bottom of the base frame at multiple angles, and the top seat is rotatably connected to the top of the top cover at multiple angles.

8. A window fan that is easy to assemble as described in claim 7, characterized in that: The top surface of the base is provided with a first hook, and the outer periphery of the first hook is provided with a plurality of first tooth grooves. The bottom of the base frame is provided with a first mounting hole. The first hook passes through the first mounting hole and hooks onto the inner bottom surface of the base frame. The outer periphery of the first mounting hole is provided with a first elastic locking rod, which is locked into the first tooth groove.

9. A window fan that is easy to assemble as described in claim 7, characterized in that: The bottom surface of the top seat is provided with a second hook, and the outer periphery of the second hook is provided with a plurality of second tooth grooves. The top cover is a hollow structure with an open bottom. The top of the top cover is provided with a second mounting hole. The second hook passes through the second mounting hole and hooks onto the inner top surface of the top cover. The outer periphery of the second mounting hole is provided with a plurality of second elastic locking rods, and the second elastic locking rods are locked in the second tooth grooves.

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