Filter screen structure and fan

Abstract

The utility model relates to the technical field of household appliances, and discloses a filter screen structure and a fan, the filter screen structure comprises: a filter screen which is formed by folding, has a plurality of creases, and has an extended state and a folded state; the first fixing piece is fixedly arranged at the first end of the filter screen; the second fixing piece is fixedly arranged at the second end of the filter screen, the second fixing piece is detachably connected with the first fixing piece, and when the filter screen is in a folded state, the first fixing piece is connected with the second fixing piece. When the filter screen does not need to be used or in the transportation process, the filter screen is folded, the first fixing piece and the second fixing piece are connected together, the whole filter screen structure is small in occupied space and convenient to store and transport, and due to the fact that the filter screen is provided with a plurality of creases, the filter screen has certain flexibility and is not prone to breakage.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a filter structure and a fan. Background Art

[0002] In the related art, some fans are installed with filters, which can achieve the effects of filtering dust and purifying air. The filters can be sold separately as product accessories. Users can install the filters on the fans during use to filter dust, or remove the filters from the fans to increase the air volume.

[0003] The filters in the related art are relatively large in volume, and there are problems of large space occupation and easy damage during transportation or when users remove them from the fans for storage. Summary of the Utility Model

[0004] In view of this, the utility model provides a filter structure and a fan to solve the problem of large space occupation of the filter in the related art.

[0005] In a first aspect, the utility model provides a filter structure, including:

[0006] A filter, formed by folding, having a plurality of creases, and the filter has an extended state and a folded state;

[0007] A first fixing member, fixedly arranged at the first end of the filter;

[0008] A second fixing member, fixedly arranged at the second end of the filter, the second fixing member is detachably connected to the first fixing member, and when the filter is in the folded state, the first fixing member and the second fixing member are connected.

[0009] Beneficial effects: When the filter is not needed or during transportation, the filter is folded, and the first fixing member and the second fixing member are connected together. The overall space occupied by the filter structure is small, which is convenient for storage and transportation. And because the filter has a plurality of creases, the filter has a certain flexibility and is not easily damaged. When the filter is needed, the connection between the first fixing member and the second fixing member is released, and the filter is unfolded. At this time, the filter has a large area for filtering air. The filter structure can be assembled into a fan through the first fixing member and the second fixing member for use, so that the air blown to the user is filtered air.

[0010] In an optional embodiment, when in the extended state, the filter is in a circular or sector-shaped ring.

[0011] Beneficial effects: When in the extended state, the filter screen is annular and is adapted to the shape of the air duct in the fan, so it can be installed and used in the fan. When in the extended state, the filter screen is fan-shaped annular, and multiple filter screen structures can be installed in the fan together. When the filter screens of multiple filter screen structures are all extended, the whole is annular.

[0012] In an alternative embodiment, when in the extended state, the filter screen is annular, and the first fixing member and the second fixing member are connected.

[0013] Or, when in the extended state, the filter screen is fan-shaped annular, and the first fixing member is adapted to be connected to the adjacent second fixing member.

[0014] Beneficial effects: When in the extended state, the filter screen is annular. At this time, only one filter screen structure is needed, which is adapted to the shape of the air duct in the fan, and the first fixing member is connected to the second fixing member, without the need to rely on additional fixing members to fix the first fixing member or the second fixing member. When in the extended state, the filter screen is fan-shaped annular, and multiple filter screen structures can be installed in the fan together. The first fixing member is connected to the adjacent second fixing member, without the need to rely on additional fixing members to fix the first fixing member or the second fixing member.

[0015] In an alternative embodiment, the two sides of the first fixing member are respectively provided with a first fixing portion and a second fixing portion, and the two sides of the second fixing member are respectively provided with a third fixing portion and a fourth fixing portion. When in the folded state, the first fixing portion is connected to the third fixing portion, and when in the extended state, the second fixing portion is connected to the fourth fixing portion.

[0016] Beneficial effects: When the filter screen is in the folded state, the first fixing portion of the first fixing member is connected to the third fixing portion of the second fixing member, so as to keep the filter screen in the folded state. When the filter screen is in the extended state, the second fixing portion of the first fixing member is connected to the fourth fixing portion of the second fixing member, so as to keep the filter screen in the extended state, without the need to rely on additional fixing members to fix the first fixing member or the second fixing member.

[0017] In an alternative embodiment, the first fixing portion is adapted to be snap-connected to the third fixing portion;

[0018] And / or, the second fixing portion is adapted to be snap-connected to the fourth fixing portion.

[0019] Beneficial effects: The snap connection between the first fixing portion and the third fixing portion is simple and convenient; the snap connection between the second fixing portion and the fourth fixing portion is simple and convenient.

[0020] In an alternative embodiment, the first fixing part is one of a buckle and an elastic arm, the third fixing part is the other of the buckle and the elastic arm, the elastic arm is provided with a clamping groove, and the buckle is adapted to be clamped with the clamping groove;

[0021] The second fixing part is one of a buckle and an elastic arm, and the fourth fixing part is the other of the buckle and the elastic arm.

[0022] Advantageous effects: The arrangement of the elastic arm facilitates the user to release the clamping connection between the first fixing part and the third fixing part, and also facilitates the release of the clamping connection between the second fixing part and the fourth fixing part.

[0023] In an alternative embodiment, the first fixing member has a first cavity, the second fixing member has a second cavity, and in the folded state, the filter screen is embedded in the first cavity and the second cavity.

[0024] Advantageous effects: In the folded state, the filter screen is embedded in the first cavity and the second cavity, and the filter screen is not visible in appearance, which can protect the filter screen and prevent the filter screen from being damaged or soiled.

[0025] In a second aspect, the present invention further provides a fan, including: a fan main body and the filter screen structure provided in the fan main body.

[0026] Advantageous effects: When the user needs to use the filtering function, the filter screen structure is installed in the fan and the filter screen is unfolded. At this time, the filter screen can filter the air. When the user needs to increase the air volume, after folding the filter screen, the filter screen structure can be retained in the fan main body or removed from the fan main body. At this time, the fan has a larger air volume.

[0027] In an alternative embodiment, the fan main body includes a mounting bracket, the mounting bracket has a central mounting portion, an annular frame, and a plurality of support bars connecting the central mounting portion and the annular frame;

[0028] One end of the filter screen structure is provided on the annular frame, and the other end is provided on the central mounting portion.

[0029] Advantageous effects: The space between the central mounting portion and the annular frame is suitable for air to pass through. Therefore, one end of the filter screen structure is provided on the annular frame and the other end is provided on the central mounting portion. When the filter screen is unfolded, it has a large filtering area and can fully filter the air.

[0030] In an alternative embodiment, the fan main body further includes an end cover and an air duct. The end cover is provided on the central mounting portion, the air duct is provided on the annular frame, the air duct is provided with a first guide rail, the end cover is provided with a second guide rail, and both ends of the filter screen structure are adapted to slide along the first guide rail and the second guide rail.

[0031] Beneficial effect: The provision of the first guide rail and the second guide rail can ensure that the filter screen can be smoothly unfolded.

[0032] In an alternative embodiment, the first guide rail has a first gap with the end face of the annular frame, the guide groove of the first guide rail faces the annular frame, the first guide rail is provided with a first fixing groove, the first fixing groove communicates with the first gap, the first fixing groove has a first opening located on the inner peripheral side of the first guide rail, when the filter screen is in the folded state, the first ends of the first fixing member and the second fixing member are both located in the first fixing groove.

[0033] Beneficial effect: The provision of the first fixing groove facilitates the positioning and installation of the first ends of the first fixing member and the second fixing member, and since the first fixing groove communicates with the first gap, the first end of the first fixing member can enter the first gap and slide along the first guide rail.

[0034] In an alternative embodiment, the first fixing groove is provided with a first limiting rib, and the first limiting rib has a second gap with the end face of the annular frame;

[0035] The first fixing member has a first side wall parallel to the end face of the annular frame, a first sliding arm is provided at a position near the first end of the first side wall, when the filter screen is in the folded state, the first end of the first side wall extends into the second gap, and the first sliding arm abuts against the first limiting rib.

[0036] Beneficial effect: When the filter screen is in the folded state, the first end of the first side wall extends into the second gap between the first limiting rib and the end face of the annular frame, and the first sliding arm abuts against the first limiting rib, so that the first end of the first fixing member can be limited and fixed. When it is necessary to unfold the filter screen, after disconnecting the connection between the first fixing portion and the third fixing portion, the first sliding arm is slid along the first guide rail.

[0037] In an alternative embodiment, the second fixing member has a second side wall parallel to the end face of the annular frame and a third side wall perpendicular to the second side wall, the second side wall and the third side wall are connected into an L shape, a first blocking rib is provided at a position near the first end of the second side wall, the third side wall abuts against the side wall of the first fixing groove, the first blocking rib abuts against the first limiting rib, and the first end of the second side wall extends into the second gap.

[0038] Beneficial effects: When the filter screen is in the folded state, the third side wall abuts against the side wall of the first fixing groove, the first retaining rib abuts against the first limiting rib, and the first end of the second side wall extends into the second gap between the first limiting rib and the end face of the annular frame. Therefore, the first end of the second fixing member can be limited and fixed, and since the third side wall abuts against the side wall of the first fixing groove, the position of the first end of the second fixing member is fixed and cannot enter the first guide rail.

[0039] In an alternative embodiment, the central mounting portion has a first plane coplanar with the end face of the annular frame. The second guide rail has a third gap with the first plane. The guide groove of the second guide rail faces the first plane. The second guide rail is provided with a second fixing groove. The second fixing groove communicates with the third gap. The second fixing groove has a second opening located on the inner peripheral side of the second guide rail. When the filter screen is in the folded state, the second ends of the first fixing member and the second fixing member are both located in the second fixing groove.

[0040] Beneficial effects: The provision of the second fixing groove facilitates the positioning and installation of the second ends of the first fixing member and the second fixing member. And since the second fixing groove communicates with the third gap, the second end of the first fixing member can enter the third gap and slide along the second guide rail.

[0041] In an alternative embodiment, the second fixing groove is provided with a limiting elastic arm, and there is a fourth gap between the end of the limiting elastic arm and the first plane;

[0042] A second sliding arm is provided at a position on the first side wall close to its second end. When the filter screen is in the folded state, the second end of the first side wall extends into the fourth gap, and the second sliding arm abuts against the limiting elastic arm.

[0043] Beneficial effects: When the filter screen is in the folded state, the second end of the first side wall extends into the fourth gap, and the second sliding arm abuts against the limiting elastic arm, which facilitates the installation of the second end of the first fixing member. During installation, first make the second sliding arm abut against the limiting elastic arm and compress the limiting elastic arm, and then extend the first end of the first side wall into the second gap between the first limiting rib and the end face of the annular frame, so that the first sliding arm abuts against the first limiting rib. At this time, both ends of the first fixing member are fixed.

[0044] In an alternative embodiment, a second retaining rib is provided at a position on the second side wall close to its second end. The second end of the second side wall extends into the fourth gap, the second retaining rib abuts against the limiting elastic arm, and the third side wall abuts against the side wall of the second fixing groove.

[0045] Beneficial effects: The second end of the second side wall extends into the fourth gap between the limiting elastic arm and the first plane. The second retaining rib abuts against the limiting elastic arm, and the third side wall abuts against the side wall of the second fixing groove, facilitating the installation of the second end of the second fixing member. During installation, first make the second retaining rib abut against the limiting elastic arm and compress the limiting elastic arm, and then extend the first end of the second side wall into the second gap between the first limiting rib and the end face of the annular frame. The third side wall abuts against the side wall of the first fixing groove, and the first retaining rib abuts against the first limiting rib. At this time, both ends of the second fixing member are fixed. Description of the Drawings

[0046] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following-described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 Structural schematic diagram of a filter structure according to an embodiment of the present invention;

[0048] Figure 2 is Figure 1 structural schematic diagram of the first fixing member at one perspective in ;

[0049] Figure 3 is Figure 1 structural schematic diagram of the first fixing member at another perspective in ;

[0050] Figure 4 is Figure 1 structural schematic diagram of the second fixing member at one perspective in ;

[0051] Figure 5 is Figure 1 structural schematic diagram of the second fixing member at another perspective in ;

[0052] Figure 6 Structural schematic diagram of a fan according to an embodiment of the present invention at one perspective when the rear net and the filter structure are not installed;

[0053] Figure 7 is Figure 6 enlarged view of part A in ;

[0054] Figure 8 Structural schematic diagram of a fan according to an embodiment of the present invention at another perspective when the rear net and the filter structure are not installed;

[0055] Figure 9 is Figure 8 enlarged view of part B in ;

[0056] Figure 10 The structural schematic diagram of a fan in the present utility model embodiment when the filter screen is in a folded state;

[0057] Figure 11 The structural schematic diagram of a fan in the present utility model embodiment when the filter screen is in an extended state and the rear net is not installed;

[0058] Figure 12 The structural schematic diagram of a fan in the present utility model embodiment when the filter screen is in a folded state and the rear net is not installed;

[0059] Figure 13 is Figure 12 The enlarged view of the C position in

[0060] Explanation of the reference numerals in the drawings:

[0061] 1. Filter screen; 2. First fixing member; 201. First fixing portion; 202. Second fixing portion; 203. First cavity; 204. First side wall; 205. First sliding arm; 206. Second sliding arm; 207. First groove; 3. Second fixing member; 301. Third fixing portion; 302. Fourth fixing portion; 303. Second cavity; 304. Second side wall; 305. Third side wall; 306. First retaining rib; 307. Second retaining rib; 308. Second groove; 4. Installation bracket; 401. Central installation portion; 4011. First plane; 402. Ring-shaped frame; 403. Support bar; 5. End cover; 501. Second guide rail; 502. Second fixing groove; 503. Limit spring arm; 6. Air duct; 601. First guide rail; 602. First fixing groove; 603. First limiting rib; 7. First gap; 8. Third gap; 9. Rear net. Detailed implementation manners

[0062] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0063] In related technologies, some fans are installed with filter screens, which can achieve the effects of filtering dust and purifying air. The filter screens can be sold separately as product accessories. Users can install the filter screens onto the fans during use to filter dust, or remove the filter screens from the fans to increase the air volume.

[0064] The filter screen in the related art is relatively large in volume and non-deformable, and there are problems of large occupied space and easy damage during transportation or when the user disassembles it from the fan for storage.

[0065] The following will describe embodiments of the present invention in conjunction with Figures 1 to 13 .

[0066] According to an embodiment of the present invention, on the one hand, a filter screen structure is provided, including a filter screen 1, a first fixing member 2, and a second fixing member 3.

[0067] Among them, as Figure 1 shown, the filter screen 1 is formed by folding, has a plurality of creases, and the filter screen 1 has an extended state and a folded state; the first fixing member 2 is fixedly arranged at the first end of the filter screen 1; the second fixing member 3 is fixedly arranged at the second end of the filter screen 1, and the second fixing member 3 is detachably connected to the first fixing member 2. When the filter screen 1 is in the folded state, the first fixing member 2 and the second fixing member 3 are connected.

[0068] In this embodiment, when the filter screen 1 is not needed or during transportation, the filter screen 1 is folded, and the first fixing member 2 and the second fixing member 3 are connected together. The overall occupied space of the filter screen structure is small, which is convenient for storage and transportation. And because the filter screen 1 has a plurality of creases, the filter screen 1 has a certain flexibility and is not easily damaged. When the filter screen 1 is needed, the connection between the first fixing member 2 and the second fixing member 3 is released, and the filter screen 1 is unfolded. At this time, the filter screen 1 has a large area for filtering air. The filter screen structure can be assembled into the fan for use through the first fixing member 2 and the second fixing member 3, so that the air blown to the user is filtered air.

[0069] Specifically, in one embodiment, the filter screen 1 is filter cotton.

[0070] In one embodiment, as Figure 11 shown, when in the extended state, the filter screen 1 is in a circular or sector-shaped ring.

[0071] In this embodiment, when in the extended state, the filter screen 1 is in a circular shape, which is adapted to the shape of the air duct 6 in the fan. Therefore, it can be installed in the fan for use. When in the extended state, the filter screen 1 is in a sector-shaped ring, and it can be installed in the fan together with multiple filter screen structures. When the filter screens 1 of multiple filter screen structures are all unfolded, the whole is in a circular shape.

[0072] In an embodiment not shown in the figure, when in the extended state, the filter screen 1 is in a rectangular shape.

[0073] In one embodiment, when in the extended state, the filter screen 1 is in a circular shape and the first fixing member 2 and the second fixing member 3 are connected; or, when in the extended state, the filter screen 1 is in a sector-shaped ring, and the first fixing member 2 is adapted to be connected to the adjacent second fixing member 3.

[0074] In this embodiment, when in the extended state, the filter screen 1 is annular. At this time, only one filter screen structure is needed, which is adapted to the shape of the air duct 6 in the fan. Moreover, the first fixing member 2 is connected to the second fixing member 3, and there is no need to rely on additional fixing members to fix the first fixing member 2 or the second fixing member 3. When in the extended state, the filter screen 1 is sector-annular, and multiple filter screen structures can be installed in the fan in combination. The first fixing member 2 is connected to the adjacent second fixing member 3, and there is no need to rely on additional fixing members to fix the first fixing member 2 or the second fixing member 3.

[0075] In one embodiment, as Figures 1 to 5 shown, on both sides of the first fixing member 2, there are respectively a first fixing portion 201 and a second fixing portion 202, and on both sides of the second fixing member 3, there are respectively a third fixing portion 301 and a fourth fixing portion 302. When in the folded state, the first fixing portion 201 is connected to the third fixing portion 301, and when in the extended state, the second fixing portion 202 is connected to the fourth fixing portion 302.

[0076] In this embodiment, when the filter screen 1 is in the folded state, the first fixing portion 201 of the first fixing member 2 is connected to the third fixing portion 301 of the second fixing member 3, so that the filter screen 1 is kept in the folded state. When the filter screen 1 is in the extended state, the second fixing portion 202 of the first fixing member 2 is connected to the fourth fixing portion 302 of the second fixing member 3, so that the filter screen 1 is kept in the extended state. There is no need to rely on additional fixing members to fix the first fixing member 2 or the second fixing member 3.

[0077] Specifically, in one embodiment, as Figure 12 and Figure 13 shown, when the filter screen 1 is in the folded state, the first fixing member 2 is located on the left side of the second fixing member 3. When it is necessary to extend the filter screen 1, the second fixing member 3 remains stationary. After disconnecting the connection between the first fixing portion 201 and the third fixing portion 301, pull the first fixing member 2 by hand and rotate it counterclockwise. When the filter screen 1 is in the extended state, as Figure 11 shown, the first fixing member 2 is located on the right side of the second fixing member 3, and the second fixing portion 202 of the first fixing member 2 is connected to the fourth fixing portion 302 of the second fixing member 3. At this time, the filter screen 1 is annular. When it is necessary to fold the filter screen 1 again, disconnect the connection between the second fixing portion 202 and the fourth fixing portion 302, pull the first fixing member 2 by hand and rotate it clockwise until the first fixing member 2 is located on the left side of the second fixing member 3, and connect the first fixing portion 201 and the third fixing portion 301 together. At this time, the filter screen 1 is kept in the folded state.

[0078] In one embodiment, the first fixing portion 201 is adapted to be snap-connected to the third fixing portion 301; and / or, the second fixing portion 202 is adapted to be snap-connected to the fourth fixing portion 302.

[0079] In this embodiment, the first fixing part 201 is snap-connected to the third fixing part 301, and the connection manner between the first fixing part 201 and the third fixing part 301 is simple and convenient; the second fixing part 202 is snap-connected to the fourth fixing part 302, and the connection manner between the second fixing part 202 and the fourth fixing part 302 is simple and convenient.

[0080] Specifically, in one embodiment, the first fixing part 201 is adapted to be snap-connected to the third fixing part 301; the second fixing part 202 is adapted to be snap-connected to the fourth fixing part 302. When the filter screen 1 is in a folded state, the first fixing member 2 is located on the left side of the second fixing member 3. When it is necessary to unfold the filter screen 1, the second fixing member 3 remains stationary. After releasing the snap connection between the first fixing part 201 and the third fixing part 301, the first fixing member 2 is pulled by hand and rotated counterclockwise. When the filter screen 1 is in an extended state, the first fixing member 2 is located on the right side of the second fixing member 3, and the second fixing part 202 of the first fixing member 2 is snap-connected to the fourth fixing part 302 of the second fixing member 3. At this time, the filter screen 1 is in a circular shape. When it is necessary to fold the filter screen 1 again, the snap connection between the second fixing part 202 and the fourth fixing part 302 is released, the first fixing member 2 is pulled by hand and rotated clockwise until the first fixing member 2 is located on the left side of the second fixing member 3, and the first fixing part 201 is snap-connected to the third fixing part 301. At this time, the filter screen 1 remains in a folded state.

[0081] In an alternative embodiment, the first fixing part 201 and the third fixing part 301 are magnetically connected; the second fixing part 202 and the fourth fixing part 302 are magnetically connected.

[0082] In one embodiment, the first fixing part 201 is one of a buckle and an elastic arm, the third fixing part 301 is the other of a buckle and an elastic arm, the elastic arm is provided with a slot, and the buckle is adapted to be snap-connected to the slot; the second fixing part 202 is one of a buckle and an elastic arm, and the fourth fixing part 302 is the other of a buckle and an elastic arm.

[0083] In this embodiment, the arrangement of the elastic arm facilitates the user to release the snap connection between the first fixing part 201 and the third fixing part 301, and also facilitates the release of the snap connection between the second fixing part 202 and the fourth fixing part 302.

[0084] Specifically, in one embodiment, as Figures 2 to 4 shown, the first fixing part 201 is a buckle, the third fixing part 301 is an elastic arm, and the elastic arm is provided with a slot. The second fixing part 202 is an elastic arm, the elastic arm is provided with a slot, and the fourth fixing part 302 is a buckle.

[0085] When the filter screen 1 is in the folded state, the first fixing member 2 is located on the left side of the second fixing member 3. When the filter screen 1 needs to be unfolded, the second fixing member 3 remains stationary. Forcefully pull the third fixing portion 301. After releasing the clamping connection between the first fixing portion 201 and the third fixing portion 301, pull the first fixing member 2 by hand and rotate it counterclockwise. When the filter screen 1 is in the unfolded state, the first fixing member 2 is located on the right side of the second fixing member 3. The second fixing portion 202 of the first fixing member 2 is clamped together with the fourth fixing portion 302 of the second fixing member 3. At this time, the filter screen 1 is annular. When the filter screen 1 needs to be folded again, forcefully pull the second fixing portion 202 to release the clamping connection between the second fixing portion 202 and the fourth fixing portion 302. Pull the first fixing member 2 by hand and rotate it clockwise until the first fixing member 2 is located on the left side of the second fixing member 3, and clamp the first fixing portion 201 and the third fixing portion 301 together. At this time, the filter screen 1 remains in the folded state.

[0086] Specifically, in one embodiment, as Figures 2 to 4 shown, there are two first fixing portions 201, which are distributed on the front and rear sides. Correspondingly, there are two third fixing portions 301.

[0087] Specifically, in one embodiment, there are four second fixing portions 202, which are symmetrically distributed on the front and rear sides. Correspondingly, there are four fourth fixing portions 302.

[0088] Specifically, in one embodiment, a first groove 207 is provided outside the first fixing member 2. The first fixing portion 201 is arranged in the first groove 207. The shape of the first groove 207 is the same as that of the third fixing portion 301. When the first fixing portion 201 is clamped with the third fixing portion 301, the third fixing portion 301 is embedded in the first groove 207, so as to reduce the space occupied by the filter screen structure in the front and rear directions.

[0089] Specifically, in one embodiment, a second groove 308 is provided outside the second fixing member 3. The fourth fixing portion 302 is arranged in the second groove 308. The shape of the second groove 308 is the same as that of the second fixing portion 202. When the second fixing portion 202 is clamped with the fourth fixing portion 302, the second fixing portion 202 is embedded in the second groove 308, so as to reduce the space occupied by the filter screen structure in the front and rear directions.

[0090] In one embodiment, the first fixing member 2 has a first cavity 203, and the second fixing member 3 has a second cavity 303. When in the folded state, the filter screen 1 is embedded in the first cavity 203 and the second cavity 303.

[0091] In this embodiment, when in the folded state, the filter screen 1 is embedded in the first cavity 203 and the second cavity 303, and the filter screen 1 cannot be seen from the outside, which can protect the filter screen 1 and prevent the filter screen 1 from being damaged or soiled.

[0092] According to an embodiment of the present utility model, on the other hand, a fan is further provided, including: a fan main body and a filter structure provided in the fan main body as provided in the above-mentioned embodiment.

[0093] In this embodiment, when the user needs to use the filtering function, the filter structure is installed in the fan, and the filter screen 1 is unfolded. At this time, the filter screen 1 can filter the air. When the user needs to increase the air volume, after folding the filter screen 1, the filter structure can be retained in the fan main body or removed from the fan main body. At this time, the fan has a larger air volume.

[0094] Specifically, the fan includes a rear net 9 and an air duct 6. The rear net 9 is detachably connected to the air duct 6. When the user needs to use the filtering function, the rear net 9 is removed from the air duct 6, the filter structure is installed in the fan, and the filter screen 1 is unfolded. Then, the rear net 9 is reinstalled on the air duct 6. At this time, the air entering from the rear net 9 is filtered by the filter screen 1 and blown to the user from the front net. When the user needs to increase the air volume, after folding the filter screen 1, the filter structure can be retained in the fan main body or removed from the fan main body, and then the rear net 9 is reinstalled on the air duct 6 for use.

[0095] Specifically, in an embodiment, when the filter screen 1 is in a folded state, as Figure 12 and Figure 13 shown, the first fixing member 2 is located on the left side of the second fixing member 3. When the filter screen 1 needs to be unfolded, the second fixing member 3 remains stationary. After disconnecting the connection between the first fixing portion 201 and the third fixing portion 301, the first fixing member 2 is pulled by hand and rotated counterclockwise. When the filter screen 1 is in an extended state, as Figure 11 shown, the first fixing member 2 is located on the right side of the second fixing member 3. The second fixing portion 202 of the first fixing member 2 is connected to the fourth fixing portion 302 of the second fixing member 3. At this time, the filter screen 1 is in a ring shape.

[0096] In an embodiment, the fan main body includes a mounting bracket 4. The mounting bracket 4 has a central mounting portion 401, an annular frame 402, and a plurality of support bars 403 connected between the central mounting portion 401 and the annular frame 402; one end of the filter structure is provided on the annular frame 402, and the other end is provided on the central mounting portion 401.

[0097] In this embodiment, the space between the central mounting portion 401 and the annular frame 402 is suitable for air to pass through. Therefore, one end of the filter structure is provided on the annular frame 402, and the other end is provided on the central mounting portion 401. When the filter screen 1 is unfolded, it has a larger filtering area and can fully filter the air.

[0098] Specifically, the motor of the fan is installed on the central mounting portion 401.

[0099] Specifically, the support bars 403 are radially distributed.

[0100] In one embodiment, as Figures 6 to 8 , the fan body further includes an end cap 5 and an air duct 6. The end cap 5 is disposed on the central mounting portion 401, the air duct 6 is disposed on the annular frame 402. The air duct 6 is provided with a first guide rail 601, the end cap 5 is provided with a second guide rail 501, and both ends of the filter structure are adapted to slide along the first guide rail 601 and the second guide rail 501.

[0101] In this embodiment, the arrangement of the first guide rail 601 and the second guide rail 501 can ensure that the filter screen 1 can be smoothly unfolded.

[0102] In one embodiment, the first guide rail 601 has a first gap 7 with the end face of the annular frame 402. The guide groove of the first guide rail 601 faces the annular frame 402. The first guide rail 601 is provided with a first fixing groove 602. The first fixing groove 602 communicates with the first gap 7. The first fixing groove 602 has a first opening located on the inner peripheral side of the first guide rail 601. When the filter screen 1 is in a folded state, the first ends of the first fixing member 2 and the second fixing member 3 are both located in the first fixing groove 602.

[0103] In this embodiment, the arrangement of the first fixing groove 602 facilitates the positioning and installation of the first ends of the first fixing member 2 and the second fixing member 3. And since the first fixing groove 602 communicates with the first gap 7, the first end of the first fixing member 2 can enter the first gap 7 and slide along the first guide rail 601.

[0104] Specifically, the first fixing groove 602 axially penetrates the first guide rail 601.

[0105] In one embodiment, as Figure 9 and Figure 13 , the first fixing groove 602 is provided with a first limiting rib 603. The first limiting rib 603 has a second gap with the end face of the annular frame 402. The first fixing member 2 has a first side wall 204 parallel to the end face of the annular frame 402. A first sliding arm 205 is provided at a position near the first end on the first side wall 204. When the filter screen 1 is in a folded state, the first end of the first side wall 204 extends into the second gap, and the first sliding arm 205 abuts against the first limiting rib 603.

[0106] In this embodiment, when the filter screen 1 is in a folded state, the first end of the first side wall 204 extends into the second gap between the first limiting rib 603 and the end face of the annular frame 402, and the first sliding arm 205 abuts against the first limiting rib 603. Therefore, the first end of the first fixing member 2 can be limited and fixed. When the filter screen 1 needs to be unfolded, after disconnecting the connection between the first fixing portion 201 and the third fixing portion 301, the first sliding arm 205 slides along the first guide rail 601.

[0107] In one embodiment, the second fixing member 3 has a second side wall 304 parallel to the end face of the annular frame 402 and a third side wall 305 perpendicular to the second side wall 304. The second side wall 304 and the third side wall 305 are connected to form an L shape. A first stop rib 306 is provided near the first end of the second side wall 304. The third side wall 305 abuts against the side wall of the first fixing groove 602, the first stop rib 306 abuts against the first limiting rib 603, and the first end of the second side wall 304 extends into the second gap.

[0108] In this embodiment, when the filter screen 1 is in a folded state, the third side wall 305 abuts against the side wall of the first fixing groove 602, the first stop rib 306 abuts against the first limiting rib 603, and the first end of the second side wall 304 extends into the second gap between the first limiting rib 603 and the end face of the annular frame 402. Therefore, the first end of the second fixing member 3 can be limited and fixed, and since the third side wall 305 abuts against the side wall of the first fixing groove 602, the position of the first end of the second fixing member 3 is fixed and cannot enter the first guide rail 601.

[0109] Specifically, in one embodiment, the first stop rib 306 extends to the third side wall 305.

[0110] In one embodiment, the central mounting portion 401 has a first plane 4011 coplanar with the end face of the annular frame 402. The second guide rail 501 has a third gap 8 with the first plane 4011. The guide groove of the second guide rail 501 faces the first plane 4011. The second guide rail 501 is provided with a second fixing groove 502. The second fixing groove 502 communicates with the third gap 8. The second fixing groove 502 has a second opening located on the inner peripheral side of the second guide rail 501. When the filter screen 1 is in a folded state, the second ends of both the first fixing member 2 and the second fixing member 3 are located in the second fixing groove 502.

[0111] In this embodiment, the setting of the second fixing groove 502 facilitates the positioning and installation of the second ends of the first fixing member 2 and the second fixing member 3. And since the second fixing groove 502 communicates with the third gap 8, the second end of the first fixing member 2 can enter the third gap 8 and slide along the second guide rail 501.

[0112] In one embodiment, the second fixing groove 502 is provided with a limiting elastic arm 503, and there is a fourth gap between the end of the limiting elastic arm 503 and the first plane 4011; a second sliding arm 206 is provided at a position on the first side wall 204 close to its second end. When the filter screen 1 is in a folded state, the second end of the first side wall 204 extends into the fourth gap, and the second sliding arm 206 abuts against the limiting elastic arm 503.

[0113] In this embodiment, when the filter screen 1 is in a folded state, the second end of the first side wall 204 extends into the fourth gap, and the second sliding arm 206 abuts against the limiting elastic arm 503, which is convenient for the installation of the second end of the first fixing member 2. During installation, first make the second sliding arm 206 abut against the limiting elastic arm 503 and compress the limiting elastic arm 503, and then insert the first end of the first side wall 204 into the second gap between the first limiting rib 603 and the end face of the annular frame 402, so that the first sliding arm 205 abuts against the first limiting rib 603. At this time, both ends of the first fixing member 2 are fixed.

[0114] Specifically, the limiting elastic arm 503 is arranged on the end cover 5 and extends into the second fixing groove 502.

[0115] In one embodiment, a second blocking rib 307 is provided at a position on the second side wall 304 close to its second end. The second end of the second side wall 304 extends into the fourth gap, the second blocking rib 307 abuts against the limiting elastic arm 503, and the third side wall 305 abuts against the side wall of the second fixing groove 502.

[0116] In this embodiment, the second end of the second side wall 304 extends into the fourth gap between the limiting elastic arm 503 and the first plane 4011, the second blocking rib 307 abuts against the limiting elastic arm 503, and the third side wall 305 abuts against the side wall of the second fixing groove 502, which is convenient for the installation of the second end of the second fixing member 3. During installation, first make the second blocking rib 307 abut against the limiting elastic arm 503 and compress the limiting elastic arm 503, and then insert the first end of the second side wall 304 into the second gap between the first limiting rib 603 and the end face of the annular frame 402, the third side wall 305 abuts against the side wall of the first fixing groove 602, and the first blocking rib 306 abuts against the first limiting rib 603. At this time, both ends of the second fixing member 3 are fixed.

[0117] Specifically, in one embodiment, the second blocking rib 307 extends to the third side wall 305.

[0118] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A filter screen structure, characterized in that, Comprising: A filter screen (1), formed by folding, having a plurality of creases, the filter screen (1) having an extended state and a folded state; A first fixing member (2), fixedly arranged at a first end of the filter screen (1); A second fixing member (3), fixedly arranged at a second end of the filter screen (1), the second fixing member (3) being detachably connected to the first fixing member (2), when the filter screen (1) is in the folded state, the first fixing member (2) and the second fixing member (3) are connected.

2. The filter structure according to claim 1, characterized in that, When in the extended state, the filter screen (1) is in a circular or sector - circular shape.

3. The filter screen structure according to claim 1, characterized in that, When in the extended state, the filter screen (1) is circular, and the first fixing member (2) and the second fixing member (3) are connected; Or, when in the extended state, the filter screen (1) is sector - circular, and the first fixing member (2) is adapted to be connected to an adjacent second fixing member (3).

4. The filter structure according to any one of claims 1 to 3, characterized in that, On two sides of the first fixing member (2), a first fixing portion (201) and a second fixing portion (202) are respectively provided, on two sides of the second fixing member (3), a third fixing portion (301) and a fourth fixing portion (302) are respectively provided, when in the folded state, the first fixing portion (201) is connected to the third fixing portion (301), when in the extended state, the second fixing portion (202) is connected to the fourth fixing portion (302).

5. The filter screen structure according to claim 4, wherein The first fixing portion (201) is adapted to be snap - connected to the third fixing portion (301); And / or, the second fixing portion (202) is adapted to be snap - connected to the fourth fixing portion (302).

6. The filter screen structure according to claim 5, characterized in that, The first fixing portion (201) is one of a snap - fastener and an elastic arm, the third fixing portion (301) is the other of a snap - fastener and an elastic arm, the elastic arm is provided with a slot, and the snap - fastener is adapted to be snap - connected to the slot; The second fixing portion (202) is one of a snap - fastener and an elastic arm, the fourth fixing portion (302) is the other of a snap - fastener and an elastic arm.

7. The filter screen structure according to any one of claims 1 to 3, 5, and 6, characterized in that The first fixing member (2) has a first cavity (203), the second fixing member (3) has a second cavity (303), when in the folded state, the filter screen (1) is embedded in the first cavity (203) and the second cavity (303).

8. A fan, characterized in that, Comprising: A fan main body and a filter screen structure as described in any one of claims 1 to 7 provided in the fan main body.

9. The fan according to claim 8, wherein The fan main body includes a mounting bracket (4), the mounting bracket (4) having a central mounting portion (401), an annular frame (402), and a plurality of support bars (403) connected between the central mounting portion (401) and the annular frame (402); One end of the filter screen structure is provided at the annular frame (402), and the other end is provided at the central mounting portion (401).

10. The fan according to claim 9, characterized in that, The fan body further includes an end cap (5) and an air duct (6). The end cap (5) is provided on the central mounting portion (401), and the air duct (6) is provided on the annular frame (402). The air duct (6) is provided with a first guide rail (601), and the end cap (5) is provided with a second guide rail (501). Both ends of the filter structure are adapted to slide along the first guide rail (601) and the second guide rail (501).

11. The fan according to claim 10, characterized in that, The first guide rail (601) has a first gap (7) with the end face of the annular frame (402). The guide groove of the first guide rail (601) faces the annular frame (402). The first guide rail (601) is provided with a first fixing groove (602). The first fixing groove (602) communicates with the first gap (7). The first fixing groove (602) has a first opening located on the inner peripheral side of the first guide rail (601). When the filter (1) is in the folded state, the first ends of the first fixing member (2) and the second fixing member (3) are both located in the first fixing groove (602).

12. The fan according to claim 11, characterized in that, The first fixing groove (602) is provided with a first limiting rib (603). The first limiting rib (603) has a second gap with the end face of the annular frame (402). The first fixing member (2) has a first side wall (204) parallel to the end face of the annular frame (402). A first sliding arm (205) is provided at a position near the first end of the first side wall (204). When the filter (1) is in the folded state, the first end of the first side wall (204) extends into the second gap, and the first sliding arm (205) abuts against the first limiting rib (603).

13. The fan according to claim 12, characterized in that, The second fixing member (3) has a second side wall (304) parallel to the end face of the annular frame (402) and a third side wall (305) perpendicular to the second side wall (304). The second side wall (304) and the third side wall (305) are connected to form an L shape. A first blocking rib (306) is provided at a position near the first end of the second side wall (304). The third side wall (305) abuts against the side wall of the first fixing groove (602). The first blocking rib (306) abuts against the first limiting rib (603). The first end of the second side wall (304) extends into the second gap.

14. The fan according to claim 13, wherein, The central mounting portion (401) has a first plane (4011) coplanar with the end face of the annular frame (402). The second guide rail (501) has a third gap (8) with the first plane (4011). The guide groove of the second guide rail (501) faces the first plane (4011). The second guide rail (501) is provided with a second fixing groove (502). The second fixing groove (502) communicates with the third gap (8). The second fixing groove (502) has a second opening on the inner circumferential side of the second guide rail (501). When the filter screen (1) is in the folded state, the second ends of the first fixing member (2) and the second fixing member (3) are both located in the second fixing groove (502).

15. The fan according to claim 14, characterized in that, The second fixing groove (502) is provided with a limiting elastic arm (503). There is a fourth gap between the end of the limiting elastic arm (503) and the first plane (4011). A second sliding arm (206) is provided at a position near the second end of the first side wall (204). When the filter screen (1) is in the folded state, the second end of the first side wall (204) extends into the fourth gap, and the second sliding arm (206) abuts against the limiting elastic arm (503).

16. The fan according to claim 15, wherein A second rib (307) is provided near the second end of the second side wall (304). The second end of the second side wall (304) extends into the fourth gap. The second rib (307) abuts against the limiting elastic arm (503), and the third side wall (305) abuts against the side wall of the second fixing groove (502).

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