Improved exhaust fan structure

Abstract

The utility model discloses an exhaust fan improved structure, including host casing and outer cover, be provided with exhaust fan and electric control device in the host casing and exhaust fan is connected with electric control device electrically, be provided with the accommodation groove in the outer cover, its characterized by, one end of host casing is provided with elastic member and one end of host casing is together with elastic member and extends into the accommodation groove, still be provided with the guide limiting structure between the outside of host casing and accommodation groove, this exhaust fan improved structure, and the elastic cooperation between the one end of exhaust fan main part and the inside of outer cover, realize the adaptive position adjustment of one end of host casing in the inside of outer cover, and then the overall height of adaptive adjustment product, to make this exhaust fan can adapt to the installation carrier of different installation height (such as: different height window), in addition, the guide limiting structure can prevent one end of host casing to get out of the accommodation groove, and make the elastic sliding of host casing in the accommodation groove play the better guiding effect.

Description

Technical Field

[0001] This utility model relates to the field of exhaust fan technology, and in particular to an improved exhaust fan structure. Background Technology

[0002] Existing exhaust fans, such as the one described in Chinese Utility Model Patent CN223121612U, entitled "An Exhaust Fan for a Fresh Air System," with an authorization announcement date of July 18, 2025, include a sealing mechanism. A main body mechanism is located on the side of the sealing mechanism, and a connecting mechanism is located on the side of the main body mechanism. The sealing mechanism includes a sealing shell, with a telescopic groove inside the side of the sealing shell. A limiting groove is located at the top of the side of the telescopic groove. A cable hole is located inside the top surface of the sealing shell, and a mounting block is fixedly connected to the top of the side of the sealing shell. This utility model, through the cooperation of multiple sealing mechanisms, main bodies, and connecting mechanisms, can achieve unlimited extension of the device to adapt to ventilation operations in different environments. The sealing mechanisms located at both ends of the device serve to seal, preventing foreign objects from falling into the device and causing internal damage. The telescopic groove provides a foundation for the installation of the main body mechanism.

[0003] Multiple main components can be connected together through sealing and connecting mechanisms to achieve combined use of multiple main components to adjust the overall length of the exhaust fan. The unit of adjustment is the length of a single main component. However, the exhaust fan with the above structure still has the following shortcomings: (1) The main body mechanism is in contact with the telescopic groove of the sealing mechanism through the telescopic block on it and the two are in an interference fit, that is, the telescopic block and the telescopic groove are in a fixed fit. Therefore, the main body mechanism cannot achieve adaptive position adjustment on the sealing mechanism and cannot meet more user needs. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an improved exhaust fan structure in which one end of the exhaust fan body and the inside of the outer cover are elastically fitted, so as to realize the adaptive position adjustment of one end of the exhaust fan body inside the outer cover.

[0005] The purpose of this utility model is achieved as follows: An improved exhaust fan structure includes a main unit housing and an outer cover. The main unit housing houses an exhaust fan and an electronic control device, with the exhaust fan electrically connected to the electronic control device. The outer cover contains a mounting groove. The key feature is that one end of the main unit housing has an elastic element that extends into the mounting groove along with the elastic element. A guide and limiting structure is also provided between the outer side of the main unit housing and the mounting groove. In this improved exhaust fan structure, one end of the exhaust fan body is elastically fitted to the inside of the outer cover, allowing the exhaust fan body to move elastically within the outer cover. This enables adaptive position adjustment of one end of the main unit housing within the outer cover, thereby adaptively adjusting the overall height of the product. This allows the exhaust fan to adapt to installation carriers of different heights (e.g., windows of different heights). Furthermore, the guide and limiting structure prevents one end of the main unit housing from detaching from the mounting groove and provides good guidance for the elastic sliding of the main unit housing within the mounting groove.

[0006] The objective of this utility model can also be achieved by the following technical measures: Specifically, one end of the main housing is fixed with a clip and there is a clamping gap between the clip and one end of the main housing. One end of the elastic element is inserted into the clamping gap and the other end of the elastic element abuts against the inner wall of the mounting groove. The clip can be used to achieve stable installation of the elastic element at one end of the main housing so that the elastic element can act stably on the main housing.

[0007] Specifically, the guide limiting structure includes a slide rail and a slider. A limiting wall is provided on one side of the slide rail, and the slider extends into the slide rail and is close to the limiting wall. The cooperation between the slide rail and the slider plays a good guiding role in the elastic movement of one end of the main housing on the mounting groove. At the same time, the limiting wall can effectively prevent the slider from falling off the slide rail, so as to achieve stable installation of one end of the main housing on the mounting groove.

[0008] Furthermore, the outer wall of the main housing is provided with a sliding groove, which constitutes the slide rail, and the slider extends inward from the side wall of the outer cover; this method is relatively easy to implement.

[0009] Specifically, the main unit housing includes a left bracket, a right bracket, and a middle connecting piece. The left bracket has a groove on its outer side wall, and the groove extends to the side walls of the left bracket. The right bracket has the same structure as the left bracket. The middle connecting piece is fixedly connected to the same side wall of the left and right brackets respectively. The part of the middle connecting piece corresponding to the groove constitutes the limiting wall. The left and right brackets are connected together by the middle connecting piece to form an integral main unit housing. At the same time, the identical structure of the left and right brackets makes the overall structure of the main unit housing simple. Furthermore, the through-type groove and limiting wall are relatively easy to set.

[0010] Specifically, it further includes an upper protective net and a lower protective net. The inner walls of the left and right supports are each provided with an upper mounting rail, a middle mounting rail, and a lower mounting rail. The two ends of the upper protective net are respectively placed on the upper mounting rails of the left and right supports, and the two ends of the lower protective net are respectively placed on the lower mounting rails of the left and right supports. The two ends of the exhaust fan are respectively placed on the middle mounting rails of the left and right supports, and the two ends of the electronic control device are respectively placed on the middle mounting rails of the left and right supports, with the electronic control device located on one side of the exhaust fan. The upper and lower protective nets can provide good protection and prevent users from contacting the exhaust fan. At the same time, the installation and operation of the upper and lower protective nets, the exhaust fan, and the electronic control module on the left and right supports are relatively simple.

[0011] Furthermore, the outer wall of the outer cover is provided with a bendable spring sheet, which bends inward to form the slider; this spring sheet structure is relatively easy to implement and facilitates its insertion into the slide groove.

[0012] Specifically, the outer cover includes a hollow cover and a side cover. The spring is provided on one side of the hollow cover, and the side cover is fixedly connected to the other side of the hollow cover. The side cover and the hollow cover form the mounting groove. A first locking edge extends outward from the bottom of the other side of the hollow cover. The hollow cover and the side cover have a simple structure and are easy to manufacture. At the same time, the first locking edge facilitates the locking and installation of one end of the main unit housing on an external carrier.

[0013] Specifically, it further includes fixing bolts and fixing nuts. The other side of the hollow cover is provided with a mounting wall with a mounting through hole. The fixing nut fits against the inner side of the mounting wall. One end of the fixing bolt passes through the side cover and the mounting through hole and is connected to the fixing nut. This allows the side cover to be stably connected to the other side of the hollow cover. Furthermore, when disassembling the product, the side cover can be removed first, making it easier for the user to use tools to remove the intermediate connecting piece, so that the spring piece on the hollow cover can easily disengage from the slide groove.

[0014] Furthermore, the other end of the main unit housing is provided with a fixing cover, and a second locking edge extends outward from the bottom of the fixing cover; so that the other end of the main unit housing can be locked onto an external carrier (such as a window) via the second locking edge.

[0015] The beneficial effects of this utility model are as follows: (1) The improved structure of this exhaust fan is that one end of the exhaust fan body is elastically fitted with the inside of the outer cover. One end of the exhaust fan body can move elastically inside the outer cover, that is, the position of one end of the main body housing inside the outer cover can be adjusted adaptively, thereby adjusting the overall height of the product so that this exhaust fan can adapt to different installation carriers (such as windows of different heights). In addition, the guide limit structure can prevent one end of the main body housing from falling out of the mounting groove, and also make the elastic sliding of the main body housing in the mounting groove play a good guiding role.

[0016] (2) The left and right brackets are connected together by the middle connecting piece to form an integral main unit housing. At the same time, the left and right brackets with the same structure make the overall structure of the main unit housing simple. Furthermore, the through-type sliding groove and limiting wall are easier to set up.

[0017] (3) The upper and lower protective nets can play a good protective role and prevent users from contacting the exhaust fan. At the same time, the installation and operation of the upper and lower protective nets, exhaust fan and electrical control module on the left and right brackets are relatively simple. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the improved structure of the exhaust fan of this utility model.

[0019] Figure 2 This is a breakdown diagram of the improved exhaust fan structure of this utility model.

[0020] Figure 3 This is another disassembled view of the improved exhaust fan structure of this utility model.

[0021] Figure 4 for Figure 3 Enlarged view of point A.

[0022] Figure 5 for Figure 3 Enlarged view of point B.

[0023] Figure 6 for Figure 3 Enlarged view of point C. Detailed Implementation

[0024] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0026] Implementation examples, in conjunction with Figures 1 to 6 As shown, an improved exhaust fan structure includes a main housing 1 and an outer cover 2. An exhaust fan 3 and an electronic control device 4 are disposed inside the main housing 1, and the exhaust fan 3 is electrically connected to the electronic control device 4. An installation groove 25 is disposed inside the outer cover 2. The main feature is that an elastic element 5 is disposed at one end of the main housing 1, and one end of the main housing 1 and the elastic element 5 extend into the installation groove 25 together. A guide limiting structure is also disposed between the outer side of the main housing 1 and the installation groove 25.

[0027] As a specific solution, a clamping piece 11 is fixed at one end of the main housing 1 and there is a clamping gap 111 between the clamping piece 11 and one end of the main housing 1. One end of the elastic member 5 is inserted into the clamping gap 111, and the other end of the elastic member 5 abuts against the inner wall of the mounting groove 25.

[0028] As a more specific embodiment, the guide limiting structure includes a slide rail 71 and a slider 72. A limiting wall 73 is provided on one side of the slide rail 71, and the slider 72 extends into the slide rail 71 and is close to the limiting wall 73.

[0029] In this embodiment, the outer side wall of the main housing 1 is provided with a sliding groove, which constitutes the slide rail 71, and the slider 72 extends inward from the side wall of the outer cover 2.

[0030] As a more specific embodiment, the main housing 1 includes a left bracket 12, a right bracket 13, and a middle connecting piece 14. The left bracket 12 has a groove on its outer side wall, and the groove extends to both sides of the left bracket 12. The right bracket 13 has the same structure as the left bracket 12. The middle connecting piece 14 is fixedly connected to the same side wall of the left bracket 12 and the right bracket 13 respectively. The part of the middle connecting piece 14 corresponding to the groove constitutes the limiting wall 73.

[0031] In this embodiment, an upper protective net 8 and a lower protective net 9 are also provided. The inner sidewalls of the left support 12 and the right support 13 are provided with an upper mounting rail 10, a middle mounting rail 20 and a lower mounting rail 30. The two ends of the upper protective net 8 are respectively placed on the upper mounting rail 10 of the left support 12 and the right support 13, and the two ends of the lower protective net 9 are respectively placed on the lower mounting rail 30 of the left support 12 and the right support 13. The two ends of the exhaust fan 3 are respectively placed on the middle mounting rail 20 of the left support 12 and the right support 13, and the two ends of the electronic control device 4 are respectively placed on the middle mounting rail 20 of the left support 12 and the right support 13, and the electronic control device 4 is located on one side of the exhaust fan 3.

[0032] In this embodiment, the outer wall of the outer cover 2 is provided with a bendable spring sheet. The spring sheet bends inward and forms the slider 72.

[0033] During installation, the outer cover 2 can be placed on the outer periphery of one end of the main unit housing 1 first, and then the spring piece can be bent inward so that it extends into the sliding groove on the outer side wall of the main unit housing 1. The operation is relatively simple.

[0034] As another embodiment of the slider 72, during installation, the outer cover 2 can be first placed on the outer periphery of one end of the main body housing 1, and then screws can be driven into the outer cover 2 at the corresponding sliding groove position of the main body housing 1, so that one end of the screw extends into the sliding groove. The screw can also constitute the slider 72 (not shown).

[0035] As a preferred embodiment, the outer cover 2 includes a hollow cover 21 and a side cover 22. The spring is provided on one side of the hollow cover 21, and the side cover 22 is fixedly connected to the other side of the hollow cover 21. The side cover 22 and the hollow cover 21 form the mounting groove 25. A first locking edge 211 extends outward from the bottom of the other side of the hollow cover 21.

[0036] In this embodiment, a fixing bolt 23 and a fixing nut 24 are also included. The other side of the hollow cover 21 is provided with a mounting wall 213 with a mounting through hole 212. The fixing nut 24 is attached to the inner side of the mounting wall 213. One end of the fixing bolt 23 passes through the side cover 22 and the mounting through hole 212 and is connected to the fixing nut 24.

[0037] As a preferred embodiment, a fixing cover 15 is provided at the other end of the main housing 1, and a second locking edge 151 extends outward from the bottom of the fixing cover 15.

[0038] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An improved structure for an exhaust fan, comprising a main housing (1) and an outer cover (2), wherein an exhaust fan (3) and an electronic control device (4) are disposed within the main housing (1) and the exhaust fan (3) is electrically connected to the electronic control device (4), and a mounting groove (25) is disposed within the outer cover (2), characterized in that, One end of the main housing (1) is provided with an elastic element (5) and the other end of the main housing (1) extends into the mounting groove (25) together with the elastic element (5). A guide limiting structure is also provided between the outer side of the main housing (1) and the mounting groove (25).

2. The improved exhaust fan structure according to claim 1, characterized in that, One end of the main housing (1) is fixed with a clip (11) and there is a clamping gap (111) between the clip (11) and one end of the main housing (1). One end of the elastic element (5) is inserted into the clamping gap (111) and the other end of the elastic element (5) abuts against the inner wall of the mounting groove (25).

3. The improved exhaust fan structure according to claim 1, characterized in that, The guide limiting structure includes a slide rail (71) and a slider (72). A limiting wall (73) is provided on one side of the slide rail (71), and the slider (72) extends into the slide rail (71) and is close to the limiting wall (73).

4. The improved exhaust fan structure according to claim 3, characterized in that, The outer wall of the main housing (1) is provided with a sliding groove, which constitutes the slide rail (71), and the slider (72) extends inward from the side wall of the outer cover (2).

5. The improved exhaust fan structure according to claim 4, characterized in that, The main housing (1) includes a left bracket (12), a right bracket (13) and a middle connecting piece (14). The left bracket (12) has a groove on its outer side wall, and the groove extends to the two side walls of the left bracket (12). The right bracket (13) has the same structure as the left bracket (12). The middle connecting piece (14) is fixedly connected to the same side wall of the left bracket (12) and the right bracket (13) respectively. The part of the middle connecting piece (14) corresponding to the groove constitutes the limiting wall (73).

6. The improved exhaust fan structure according to claim 5, characterized in that, It also includes an upper protective net (8) and a lower protective net (9). The inner walls of the left support (12) and the right support (13) are provided with an upper mounting rail (10), a middle mounting rail (20) and a lower mounting rail (30). The two ends of the upper protective net (8) are respectively placed on the upper mounting rail (10) of the left support (12) and the right support (13). The two ends of the lower protective net (9) are respectively placed on the lower mounting rail (30) of the left support (12) and the right support (13). The two ends of the exhaust fan (3) are respectively placed on the middle mounting rail (20) of the left support (12) and the right support (13). The two ends of the electronic control device (4) are respectively placed on the middle mounting rail (20) of the left support (12) and the right support (13) and the electronic control device (4) is located on one side of the exhaust fan (3).

7. The improved exhaust fan structure according to claim 5, characterized in that, The outer wall of the outer cover (2) is provided with a bendable spring sheet, which bends inward to form the slider (72).

8. The improved exhaust fan structure according to claim 7, characterized in that, The outer cover (2) includes a hollow cover (21) and a side cover (22). The hollow cover (21) is provided with the spring piece on one side, and the side cover (22) is fixedly connected to the other side of the hollow cover (21). The side cover (22) and the hollow cover (21) form the mounting groove (25). The bottom of the other side of the hollow cover (21) extends outward with a first locking edge (211).

9. The improved exhaust fan structure according to claim 8, characterized in that, It also includes a fixing bolt (23) and a fixing nut (24). The other side of the hollow cover (21) is provided with a mounting wall (213) with a mounting through hole (212). The fixing nut (24) fits against the inner side of the mounting wall (213). One end of the fixing bolt (23) passes through the side cover (22) and the mounting through hole (212) and is connected to the fixing nut (24).

10. The improved exhaust fan structure according to claim 1, characterized in that, The other end of the main housing (1) is provided with a fixing cover (15), and the bottom of the fixing cover (15) extends outward with a second locking edge (151).

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