A filter fixing structure, mobile air conditioner rear enclosure and mobile air conditioner

Abstract

The present invention provides a filter fixing structure, a mobile air conditioner rear casing and a mobile air conditioner. The filter fixing structure includes a mounting frame and a fixing structure, and the fixing structure includes: a fixing part, the fixing part includes a turn button and a turn button fitting part, the turn button fitting part is arranged on the mounting frame, and the turn button is used to rotate and cooperate with the turn button fitting part to fix the filter on the mounting frame or release the filter from the mounting frame; a positioning part, the positioning part is arranged on the mounting frame, and the positioning part is suitable for abutting against the outer edge of the filter. When the filter is installed, the filter can be fixed by rotating the turn button so that the turn button abuts against the surface of the filter. When the filter is disassembled, the filter can be removed by rotating the turn button so that the turn button rotates away from the filter. The disassembly and assembly method is simple, and the rotation fixing method is effortless and the disassembly and assembly efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a filter fixing structure, a mobile air conditioner rear casing and a mobile air conditioner. Background Art

[0002] As customers in the market have higher requirements for air filtration performance, mobile air conditioners have gradually added HAPE filters. For the installation of HAPE filters, the existing installation method is generally to set a slot on the installation frame. During installation, the filter can be deformed to a certain extent, and the edge of the filter is inserted into the slot. Since the filter needs to be cleaned regularly to ensure the air conditioning effect, the filter needs to be disassembled and assembled frequently. The existing installation method is prone to deformation and damage of the filter, and there is no positioning during the installation and disassembly process or the positioning accuracy is required to be high, which is time-consuming, labor-intensive and inefficient. Summary of the invention

[0003] The problem solved by the present invention is that the existing filter installation method is easy to deform and damage the filter, and has the disadvantages of time-consuming and labor-intensive installation and low efficiency due to the lack of a positioning structure or high positioning accuracy requirements.

[0004] To solve at least one aspect of the above problems, the present invention provides a filter screen fixing structure, comprising a mounting frame and a fixing structure, wherein the fixing structure is arranged on the mounting frame, and the fixing structure is used to install the filter screen on the mounting frame;

[0005] The fixed structure comprises:

[0006] A fixing part, the fixing part includes a turn buckle and a turn buckle matching part, the turn buckle matching part is arranged on the installation frame, and the turn buckle is used to rotate with the turn buckle matching part to fix the filter screen on the installation frame or release the filter screen from the installation frame;

[0007] A positioning portion is disposed on the installation frame and is suitable for abutting against an outer edge of the filter screen.

[0008] Therefore, on the one hand, when installing the filter, it is only necessary to rotate the knob so that the knob contacts the surface of the filter to fix the filter. When removing the filter, it is only necessary to rotate the knob so that the knob is rotated away from the filter to remove the filter. The filter can be fixed or released by the cooperation between the knob and the knob mating part. The disassembly and assembly method is simple, and the rotation fixing method is effortless and the disassembly and assembly efficiency is high.

[0009] On the other hand, the present invention also provides a positioning portion on the installation frame that is suitable for positioning the filter by simply abutting against it, and the positioning method is simple. When installing the filter, first abut the outer edge of the filter against the positioning portion to position the filter, and then rotate the knob to fix the filter. When removing the filter, first rotate the knob to release the fixation of the filter, and then directly remove the filter from the installation frame. The disassembly process is simple and efficient.

[0010] Further, the positioning portion includes a first positioning portion, and the first positioning portion is arranged on a side of the installation frame opposite to the first fixing portion.

[0011] Thus, the fixing part and the first positioning part are respectively located on opposite sides of the filter screen, thereby fixing the filter screen from two opposite directions firmly and reliably. During installation, the edge of the filter screen can be connected to the first positioning part first, the filter screen can be positioned by the first positioning part, and then the rotary buckle can be turned to fix the filter screen by the cooperation between the rotary buckle and the rotary buckle matching part. The installation steps are simple and efficient.

[0012] Furthermore, the first positioning portion includes a limiting groove, the limiting groove is connected to the inner wall of the installation frame, and the filter is suitable for being inserted into the limiting groove.

[0013] During installation, the limiting groove not only supports and positions the filter, thereby facilitating the installation of the filter by the fixing part, but also has a limiting effect on limiting the movement of the filter in the front and rear directions when the filter is inserted into the limiting groove.

[0014] Furthermore, the limiting groove includes a bottom plate, a limiting plate and reinforcing ribs, the bottom plate is protruding forward from the inner wall of the mounting frame, the limiting plate is upwardly arranged from the front end of the bottom plate, and the reinforcing ribs are arranged on the bottom plate and connected to the limiting plate.

[0015] During installation, the filter screen is inserted into the limiting groove and abuts against the reinforcing ribs. The provision of the reinforcing ribs increases the supporting strength of the limiting grooves.

[0016] Furthermore, the positioning portion further includes a second positioning portion, and the second positioning portion includes a protruding structure protruding forward on the installation frame.

[0017] During installation, the second positioning portion is used to position the filter screen to stabilize the filter screen, making it easier for the fixing portion to fix the filter screen.

[0018] Furthermore, the protruding structure includes a positioning plate, and a side of the positioning plate facing the filter screen is suitable for abutting against the filter screen.

[0019] Therefore, the positioning plate is used to limit the filter screen, stabilize the filter screen, and facilitate the fixing of the filter screen by the fixing part.

[0020] Furthermore, the protruding structure also includes a positioning side plate, and the positioning plate and the positioning side plate form a second groove-shaped structure.

[0021] The present invention arranges the protruding structure as a second groove-shaped structure, which helps to make the wall thickness of the positioning plate and the positioning side plate of the second positioning part uniform during injection molding, thereby ensuring the fluidity of the plastic and reducing the shrinkage and deformation of the installation frame.

[0022] Furthermore, the mounting frame includes a frame body and connecting ribs, the connecting ribs are connected between two opposite inner walls of the frame body, the protruding structure is arranged on the connecting ribs, the screw-on fitting part is connected to the inner wall of the frame body and the center line of the screw-on fitting part is on the same straight line as the center line of the connecting ribs.

[0023] In this way, looking toward the rear side of the installation frame, the screw-on fitting part and the connecting rib are located on the same straight line, and the protruding structure covers part of the connecting rib, which on the one hand improves the aesthetics of the installation frame, and on the other hand prevents the protruding structure from blocking the wind, thereby ensuring the wind intake effect at the installation frame.

[0024] Further, the turn buckle includes a buckle, which is arranged on the back of the turn buckle, and the turn buckle fitting part includes a turn buckle fitting part body, and the turn buckle fitting part body is provided with a clamping hole, and the buckle is suitable for being inserted into the clamping hole and abutting against the back of the turn buckle fitting part body through the clamping hole.

[0025] Thus, the rotatable connection between the turn buckle and the turn buckle matching part is achieved, and the buckle and the clamping hole are clamped in a simple process and saves labor for installation.

[0026] Furthermore, a mating surface is formed on the back of the spin buckle mating part body, and when the buckle is rotated to the mating surface, the spin buckle is in a first position or a second position, wherein when the spin buckle is in the first position, the spin buckle fixes the filter screen on the installation frame, and when the spin buckle is in the second position, the spin buckle releases the filter screen from the installation frame.

[0027] By arranging a matching surface on the back of the main body of the rotary buckle matching part, the rotary buckle abuts against the matching surface when the rotary buckle fixes or releases the filter screen.

[0028] Furthermore, the turn-on fitting part includes a protruding rib, which is arranged on the back of the turn-on fitting part body and forms the mating surface and the non-mating surface on the back of the turn-on fitting part body respectively, and the thickness of the protruding rib at the mating surface is greater than the thickness of the protruding rib at the non-mating surface.

[0029] Thus, by setting the protruding ribs on the back of the body of the rotary buckle fitting part to form a fitting surface and a non-fitting surface, the rotary buckle abuts against the fitting surface when the filter screen is fixed or released, and the rotary buckle abuts against the non-fitting surface during the rotation process. Since the fitting surface is protruding from the non-fitting surface, the force required to be overcome when the rotary buckle abuts against the fitting surface is greater than the force required to be overcome when the rotary buckle abuts against the non-fitting surface, and then the hand feel is tighter when the rotary buckle is rotated to the fitting surface, and the hand feel is looser when the rotary buckle is rotated to the non-fitting surface, making the rotary buckle easier and more labor-saving during the rotation process. When the rotary buckle stops rotating, it is in a tightened state, which not only increases the firmness of the rotary buckle to fix the filter screen, but also avoids the uncontrollable automatic rotation of the rotary buckle. Therefore, the thickness difference between the fitting surface and the non-fitting surface can be changed by changing the thickness of the protruding ribs, thereby changing the tightness of the rotary buckle during the rotation process, and the setting method is simple and controllable.

[0030] Furthermore, the thickness of the protruding rib formed on the non-matching surface decreases gradually from close to the matching surface to far away from the matching surface.

[0031] As a result, the buckle of the turn buckle can be smoothly rotated on the back of the turn buckle fitting part body, avoiding the jamming of the rotation process caused by the uneven back of the turn buckle fitting part body.

[0032] Furthermore, the screw-on fitting portion further includes a first limiting rib, two ends of which are respectively connected to the inner wall of the clamping hole, and the first limiting rib intersects with the central axis of the clamping hole.

[0033] The provision of the first limiting rib can limit the buckle from further rotating on the back of the spin buckle fitting part body, so that the spin buckle can stay firmly at the first position or the second position.

[0034] The present invention also provides a mobile air conditioner rear enclosure, comprising a shell and a filter fixing structure as described in any one of the above items, wherein a mounting frame of the filter fixing structure is arranged on the shell.

[0035] The present invention also provides a mobile air conditioner, comprising the filter fixing structure as described in any one of the above items or the rear shell of the mobile air conditioner as described above.

[0036] The beneficial effects of the mobile air conditioner rear shell and the mobile air conditioner provided by the present invention compared with the prior art are the same as the beneficial effects of the filter fixing structure relative to the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a partial structural diagram of the assembly of the filter screen and the installation frame in the embodiment of the present invention;

[0038] Figure 2 for Figure 1 The enlarged view of point Ⅰ in the figure;

[0039] Figure 3 It is an assembly diagram of the filter screen and the mounting frame when the rotary buckle is in the second position in an embodiment of the present invention;

[0040] Figure 4 It is an assembly diagram of the filter screen and the mounting frame when the rotary buckle is in the first position in the embodiment of the present invention;

[0041] Figure 5 A rear view of the rear enclosure of the mobile air conditioner in an embodiment of the present invention;

[0042] Figure 6 The rear enclosure edge of the mobile air conditioner in the embodiment of the present invention Figure 5 Cross-section view along the AA direction;

[0043] Figure 7 for Figure 5 Enlarged view of the middle II;

[0044] Figure 8 It is a front view of the screw-on fitting part in the embodiment of the present invention;

[0045] Fig. 9 It is a rear view of the screw-on fitting part in the embodiment of the present invention;

[0046] Fig.10 The edge of the screw-on fitting portion in the embodiment of the present invention Fig. 9 Cross-section along the BB direction;

[0047] Fig.11 It is an overall structural diagram of a turn buckle in an embodiment of the present invention;

[0048] Fig.12 It is a front view of the assembly of the turn buckle and the turn buckle matching part when the turn buckle is in the second position in the embodiment of the present invention;

[0049] Fig.13 It is a rear view of the assembly of the turn buckle and the turn buckle matching part when the turn buckle is in the second position in the embodiment of the present invention;

[0050] Fig.14 It is a front view of the assembly of the turn buckle and the turn buckle matching part when the turn buckle is in the first position in the embodiment of the present invention;

[0051] Fig.15 It is a rear view of the assembly of the turn buckle and the turn buckle matching part when the turn buckle is in the first position in the embodiment of the present invention;

[0052] Fig.16 It is a front view of the assembly of the mounting frame and the filter screen when the rotary buckle is in the process of rotation in the embodiment of the present invention.

[0053] Description of reference numerals:

[0054] 1-installation frame; 2-filter; 3-fixing part; 4-first positioning part; 5-second positioning part;

[0055] 11-frame; 12-connecting ribs; 31-screw; 32-screw fitting part; 41-bottom plate; 42-limiting plate; 43-reinforcement ribs; 51-positioning plate; 52-positioning side plate; 53-second groove structure;

[0056] 121-first rib; 122-second rib; 311-turn buckle body; 312-buckle; 321-turn buckle fitting body; 322-buckle hole; 323-fitting surface; 324-non-fitting surface; 325-protruding rib; 326-first limiting rib; 431-first reinforcing rib; 432-second reinforcing rib. DETAILED DESCRIPTION

[0057] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0058] In addition, the above, below, left, right, front, and back mentioned in the embodiments of the present invention refer to the installation frame of the present invention being located in the adjacent Figure 1 The placement position in the figure is the corresponding position of the entire installation frame; among them, X positive represents "left", X reverse represents "right", Y positive represents "front", Y reverse represents "back", Z positive represents "up", and Z reverse represents "down".

[0059] See also Figure 1 As shown, an embodiment of the present invention provides a filter screen fixing structure, including a mounting frame 1 and a fixing structure, wherein the fixing structure is arranged on the mounting frame 1, and the fixing structure is used to install the filter screen 2 on the mounting frame 1. The fixing structure includes a fixing portion 3 and a positioning portion, wherein the fixing portion 3 includes a turn button 31 and a turn button matching portion 32, wherein the turn button matching portion 32 is arranged on the mounting frame 1, and the turn button 31 is used to rotate with the turn button matching portion 32 to fix the filter screen 2 on the mounting frame 1 or release the filter screen 2 from the mounting frame 1; the positioning portion is arranged on the mounting frame, and the positioning portion is suitable for abutting against the outer edge of the filter screen, and the positioning portion is used to position the filter screen.

[0060] In this embodiment, a turn-lock fitting portion 32 is provided on the installation frame 1, and the filter screen 2 is located on one side of the turn-lock fitting portion 32. The turn-lock 31 includes a turn-lock body 311, and the turn-lock body 311 includes a turn-lock first end and a turn-lock second end. The turn-lock first end is rotatably connected to the turn-lock fitting portion 32, and the turn-lock second end can be used as a handle. By rotating the turn-lock 31, the turn-lock second end is brought into contact with the filter screen 2. When the turn-lock second end rotates toward the filter screen 2 and abuts against the filter screen 2, the filter screen 2 is fixed on the installation frame 1 under the restriction of the turn-lock second end, thereby realizing the installation of the filter screen 2. When the turn-lock second end rotates away from the filter screen 2 and detaches from the filter screen 2, the filter screen 2 is released from the restriction and can be removed from the installation frame 1, thereby realizing the disassembly of the filter screen 2. The disassembly and assembly method is simple, and the method of fixing or releasing the fixation by rotation is time-saving, labor-saving, and efficient.

[0061] In addition, the setting of the positioning part helps to position the filter when installing it, and the positioning method is simple, just put the filter in contact with the positioning part. When removing the filter, after rotating the knob to release the filter, the filter can be directly removed from the installation frame, and the disassembly and assembly process is simple and efficient.

[0062] The mounting frame 1 includes a frame body 11 and a connecting rib 12, and the connecting rib 12 is connected between two opposite inner walls of the frame body 11. In this embodiment, the frame body 11 is a rectangular structure, and the connecting rib 12 includes a first rib 121 and a second rib 122. The first rib 121 is arranged in parallel along the up and down direction of the frame body 11, and the second rib 122 is arranged in parallel along the left and right direction of the frame body 11. The first rib 121 and the second rib 122 are cross-linked vertically and horizontally and are connected to each other at the intersection. The setting of the connecting rib 12 increases the strength of the frame body 11. Preferably, the frame body 11 and the connecting rib 12 are integrally formed to ensure the connection reliability between the frame body 11 and the connecting rib 12, and increase the overall strength of the frame body 11.

[0063] like Figure 1 In the direction shown in , the filter screen 2 is installed on the front side of the installation frame 1. The filter screen 2 is a rectangular structure, and the filter screen 2 is tightly attached to the connecting rib 12. The screw-on fitting part 32 is connected to the inner wall of the frame 11. Preferably, the center line of the screw-on fitting part 32 is on the same straight line as the center line of the connecting rib 12. In this way, looking toward the back side of the installation frame 1, the screw-on fitting part 32 and the connecting rib 12 are on the same straight line, which improves the aesthetics of the lines of the installation frame 1. In addition, it also prevents the screw-on fitting part from blocking the wind, ensuring the wind intake effect at the installation frame.

[0064] The screw-on fitting part 32 can be arranged on the upper wall surface, the left wall surface or the right wall surface of the inner wall of the frame body 11. In this embodiment, the screw-on fitting part 32 is preferably arranged on the upper wall surface of the inner wall of the frame body 11, so as to improve the convenience of disassembly and assembly of the filter screen 2 and conform to the disassembly and assembly habits. In addition, the screw-on fitting part 32 is located in the middle position of the upper wall surface of the inner wall of the frame body 11, so as to ensure that the force on the filter screen 2 is balanced.

[0065] For the rotatable connection between the turn button 31 and the turn button fitting portion 32, this embodiment provides one preferred method. Fig.11 As shown, the buckle 31 further includes a buckle 312, which is disposed on the back of the buckle body 311 and is suitable for connecting with the buckle matching portion 32. Preferably, the buckle 312 is disposed on the back of the first end of the buckle. Figure 8 , 9 As shown, the turn-lock fitting part 32 includes a turn-lock fitting part body 321, and a clamping hole 322 is provided on the turn-lock fitting part body 321. Preferably, the central axis of the clamping hole 322 is consistent with the central line of the turn-lock fitting part body 321. The clamping buckle 312 is suitable for inserting into the clamping hole 322 and passing through the clamping hole 322 to abut against the back of the turn-lock fitting part body 321. In this way, the clamping buckle 312 is clamped with the clamping hole 322 to realize the rotatable connection between the turn-lock 31 and the turn-lock fitting part 32. The so-called back refers to Figure 1 As shown in the rear side, for the turn buckle 31, the side of the turn buckle 31 facing the turn buckle fitting body 321 is the back side, and the opposite side is the front side of the turn buckle 31. For the turn buckle fitting part 32, the side of the turn buckle fitting body 321 facing the turn buckle 31 is the front side, and the opposite side is the back side of the turn buckle fitting part 32.

[0066] There are at least two buckles 312, and at least two buckles 312 are located on the same circumference and are evenly spaced on the same circumference. In this embodiment, two buckles 312 are preferred. After the buckles 312 are inserted into the clamping holes 322, the center line of the two buckles 312 intersects with the central axis of the clamping holes 322. The two buckles 312 can not only ensure the clamping connection between the turn buckle 31 and the turn buckle matching part 32, but also avoid assembly difficulties caused by the difficulty in ensuring the strength of the plastic assembly due to too many buckles 312.

[0067] Furthermore, the rotary lock fitting portion 32 further includes a first limiting rib 326, the two ends of which are respectively connected to the inner wall of the clamping hole 322, and the first limiting rib 326 intersects with the central axis of the clamping hole 322, so that the two ends of the first limiting rib 326 are located in the radial direction of the same circumference, and the first limiting rib 326 divides the clamping hole 322 into two areas. The two buckles 312 of the rotary lock 31 rotate in the two areas respectively, and the first limiting rib 326 is used to limit the rotation of the buckle 312 on the back of the rotary lock fitting portion 32.

[0068] Furthermore, if Fig.10 As shown, the back of the turn-lock fitting body 321 is formed with a mating surface 323 and a non-mating surface 324, and the mating surface 323 is arranged to protrude from the non-mating surface 324, that is, there is a thickness difference between the mating surface 323 and the non-mating surface 324. The so-called thickness refers to Figure 1When the buckle 312 rotates to the mating surface 323, the knob 31 is in the first position or the second position. At this time, the force required to overcome when the knob 31 abuts against the mating surface 323 is large, and the force required to rotate the knob 31 is large. The knob 31 feels tight when rotating. When the buckle 312 rotates to the non-mating surface 324, as shown in FIG. Fig.16 As shown, the knob 31 is in the process of rotating from the first position to the second position or from the second position to the first position. At this time, the force that needs to be overcome when the knob 31 abuts against the non-matching surface 324 is small, the force required to rotate the knob 31 is small, and the knob 31 feels loose when rotating. Figure 4 , 14 15, the screw button 31 fixes the filter screen 2 on the mounting frame 1. When the screw button 31 is in the second position, as shown in FIG. Figure 3 , 12 As shown in 13 , the screw button 31 releases the filter screen 2 from the mounting frame 1 .

[0069] In some of the embodiments, the turn-on fitting portion 32 includes a protruding rib 325, which is disposed on the back of the turn-on fitting portion body 321 and respectively forms a mating surface 323 and a non-mating surface 324 on the back of the turn-on fitting portion body 321. The thickness of the protruding rib 325 at the mating surface 323 is greater than the thickness of the protruding rib 325 at the non-mating surface 324. The mating surface 323 and the non-mating surface 324 are respectively formed by arranging protruding ribs 325 of different thicknesses on the back of the turn-on fitting portion body 321.

[0070] Furthermore, the thickness of the protruding rib 325 formed on the non-matching surface 324 decreases gradually from close to the matching surface 323 to far away from the matching surface 323. As a result, the buckle 312 of the turn buckle 31 can rotate smoothly on the back of the turn buckle matching part body 321, avoiding the rotation process jamming caused by the uneven back of the turn buckle matching part body 321.

[0071] Specifically, the protruding rib 325 is in the shape of a long strip and is arranged along the circumferential direction of the clamping hole 322 on the back of the body 321 of the turn-lock fitting part. The number of the protruding rib 325 can be one, and in this case, a circle of ribs is arranged on the back of the turn-lock fitting part 32. Preferably, the number of the protruding rib 325 is two, and the protruding rib 325 starts from one end of the first limiting rib 326 and extends to the other end of the first limiting rib 326 along the circumferential direction of the clamping hole 322 on the back of the body 321 of the turn-lock fitting part. One of the two protruding ribs 325 extends clockwise from the starting end along the circumferential direction of the clamping hole 322 on the back of the body 321 of the turn-lock fitting part, and the other of the two protruding ribs 325 extends counterclockwise from the starting end along the circumferential direction of the clamping hole 322 on the back of the body 321 of the turn-lock fitting part.

[0072] The thickness of the protruding rib 325 near the first limiting rib 326 is greater than the thickness of other areas on the protruding rib 325. The thickness of the protruding rib 325 gradually decreases from the two ends of the protruding rib 325 to the middle part of the protruding rib 325, that is, the thickness of the middle part of the protruding rib 325 is less than the thickness of the two ends of the protruding rib 325. In this way, from one end of the protruding rib 325 to the other end, the thickness of the protruding rib 325 changes from high to low and then to high. The so-called thickness of the protruding rib 325 refers to the thickness of the protruding rib 325 extending out of the back of the turn-lock fitting body 321. The areas where the two ends of the protruding rib 325 cooperate with the buckle 312 form a matching surface 323, and the areas on the protruding rib 325 where the thickness is lower than the thickness of the two ends of the protruding rib 325 form a non-matching surface 324. In a specific embodiment, the thickness of the matching surface 323 is 0.5 mm, and the thickness of the protruding rib 325 gradually decreases to 0 from the matching surface 323 to the non-matching surface 324, that is, the thickness of the protruding rib 325 transitions from 0.5 mm to 0 from one end to the other, and then from 0 to 0.5 mm. In this way, when the buckle 31 is rotating, when the buckle 312 abuts against the non-matching surface 324, the hand feel when rotating the second end of the buckle is loose, and when the buckle 31 stops rotating, the second end of the buckle abuts against the filter 2 to fix the filter 2 or the second end of the buckle is completely separated from the filter 2. The buckle 312 contacts the mating surface 323, and the knob 31 and the knob fitting part 32 are in a tightened state, which increases the force of the knob 31 on the filter screen 2 and fixes it firmly, or after the filter screen 2 is unfixed, the knob 31 is not easy to rotate automatically. In this embodiment, the tightness of the knob 31 during rotation is achieved by the thickness of the back of the knob fitting part body 321, so that the knob 31 is relatively easy to rotate during rotation, and the knob 31 is tightened when it stops rotating, which not only increases the firmness of the knob 31 fixing the filter screen 2, but also saves effort.

[0073] Furthermore, the positioning portion includes a first positioning portion 4, which is disposed on a side of the mounting frame 1 opposite to the fixing portion 3, whereby the fixing portion 3 and the first positioning portion 4 are respectively located on opposite sides of the filter screen 2 to fix the filter screen 2 from both upper and lower directions. Figure 5-7 As shown, the first positioning portion 4 includes a limiting groove arranged on the inner wall of the mounting frame, and the filter screen 2 is suitable for being inserted into the limiting groove. The number of limiting grooves can be one or more. The limiting groove and the frame 11 are integrally injection molded to increase the reliability of the connection between the first positioning portion 4 and the frame 11.

[0074] In some embodiments, the limiting groove includes a bottom plate 41 and a limiting plate 42, the bottom plate 41 is protruding forward from the inner wall of the installation frame 1, and the bottom plate 41 has a supporting effect on the filter screen 2. The limiting plate 42 is set upward from the front end of the bottom plate 41, and the limiting plate 42 is suitable for limiting the movement of the filter screen 2 in the front and rear directions. During installation, the edge of the filter screen 2 is inserted into the limiting groove and abuts against the bottom plate 41, and the installation gap between the edge of the filter screen 2 and the bottom plate 41 is 0.5mm. In other embodiments, the limiting groove can also be an installation groove opened on the inner wall of the installation frame 1, the opening of the installation groove faces the filter screen 2, and the filter screen 2 is provided with a sheet structure suitable for inserting into the installation groove.

[0075] Preferably, the limiting groove also includes a reinforcing rib 43, which is arranged on the bottom plate 41 and connected to the limiting plate 42. The height of the reinforcing rib 43 is lower than the height of the limiting plate 42, and the so-called height refers to the dimension in the up and down direction. Specifically, the reinforcing rib 43 includes a first reinforcing rib 431 and a second reinforcing rib 432, and the first reinforcing rib 431 is vertically upwardly arranged by the left and right edges of the bottom plate 41, so that the bottom plate 41 and the first reinforcing ribs 431 on the left and right sides form a first groove-like structure. The second reinforcing rib 432 is arranged in the first groove-like structure and connected to the limiting plate 42. During installation, the edge of the filter screen 2 is inserted into the limiting groove and abuts against the reinforcing rib 43, and the installation gap between the edge of the filter screen 2 and the reinforcing rib 43 is 0.5 mm. The provision of the reinforcing rib 43 is conducive to increasing the supporting strength of the limiting groove.

[0076] Furthermore, the fixing portion also includes a second positioning portion 5, and the second positioning portion 5 is suitable for positioning the filter 2. The second positioning portion 5 includes a protruding structure protruding forward on the installation frame 1. Preferably, the second positioning portion 5 is a protruding structure protruding forward on the connecting rib 12, so that when looking toward the rear side of the installation frame 1, the protruding structure blocks part of the connecting rib, thereby improving the aesthetics of the installation frame and does not affect the air intake effect at the installation frame 1. The protruding structure can be a protrusion, and the shape of the protrusion includes cylindrical or square. The protruding structure can also be a plate-like structure. Specifically, the protruding structure includes a positioning plate 51, and the side of the positioning plate 51 facing the filter is suitable for abutting against the filter 2. It should be noted that any side of the positioning plate 51 can abut against the filter 2 to achieve the positioning effect.

[0077] The preferred embodiment of this invention is as follows: Figure 2As shown, the protruding structure also includes a positioning side plate 52, the number of the positioning side plates 52 is two, the two positioning side plates 52 are vertically connected to the two sides of the positioning plate 51, the positioning plate 51 and the two second positioning side plates 52 form a second groove-shaped structure 53, and the second groove-shaped structure 53 protrudes toward the front side of the installation frame 1. The protruding structure is set to the second groove-shaped structure 53, so that the second positioning portion 5 can achieve uniform wall thickness of the positioning plate 51 and the positioning side plate 52 during injection molding, so as to ensure the fluidity of the plastic and reduce the shrinkage deformation of the installation frame 1. Preferably, the installation gap between the positioning plate 51 and the edge of the filter screen 2 is 0.5mm. Preferably, the second groove-shaped structure 53 formed by the positioning plate 51 and the positioning side plate 52 is arranged on the connecting rib 12. In this way, looking toward the rear side of the installation frame 1, the second groove-shaped structure 53 blocks part of the connecting rib 12, improves the aesthetics of the installation frame 1, and avoids the second groove-shaped structure from blocking the wind, affecting the wind intake effect at the installation frame 1.

[0078] There are multiple second groove structures 53, preferably three second groove structures 53 are respectively arranged on the left and right sides of the filter screen 2, and the second groove structures 53 on each side are respectively arranged on the connecting ribs 12. In this embodiment, the second positioning portion 5 is respectively arranged on the left and right sides of the filter screen 2, so the second groove structures 53 on the left and right sides of the filter screen 2 are both arranged on the first ribs 121.

[0079] In one preferred embodiment, Figure 1 As shown, the installation frame 1 is a rectangular structure, and a fixing portion 3 and a first positioning portion 4 are provided on the frame body 11 of the installation frame 1, and a second positioning portion 5 is provided on the connecting rib 12 of the installation frame 1. Specifically, the inner wall of the upper side of the frame body 11 is provided with a screw-fitting portion 32 of the fixing portion 3, the inner wall of the lower side of the frame body 11 is connected with a limiting groove, the two ends of the second rib 122 are respectively provided with a second groove-shaped knot 53, the upper end of the first rib 121 is provided with a positioning plate 51, the installation gap between the edge of the filter screen 2 and the second positioning portion 5 located on the left and right sides thereof is 0.5mm, and the installation gap between the edge of the filter screen 2 and the second positioning portion 5 located on the upper side thereof is 1mm.

[0080] The use process of the filter fixing structure provided in this embodiment is as follows:

[0081] When the filter 2 needs to be installed, the lower edge of the filter 2 is inserted into the limiting groove, and the second groove structures 53 on the left and right sides position the filter 2 left and right, and the upper positioning plate 51 positions the filter 2 from the top, and then the knob 31 is rotated so that the second end of the knob abuts against the front surface of the filter 2, thereby achieving the installation of the filter 2. When the filter 2 needs to be removed, the knob 31 is rotated so that the second end of the knob is rotated away from the filter 2, and the filter 2 is lifted forward and upward to remove the filter 2 from the first positioning portion 4.

[0082] In this embodiment, since there is a 0.5 mm installation gap between the second positioning portion 5 and the edge of the filter 2 and between the first positioning portion 4 and the edge of the filter 2, the filter 2 does not deform during the disassembly and assembly process, thereby preventing the filter 2 from being damaged by long-term bending and deformation.

[0083] In this embodiment, the filter fixing structure includes a fixing portion 3, a first positioning portion 4, and a second positioning portion 5, wherein the second positioning portion 5 is used to position the filter 2 left and right and at the top, the first positioning portion 4 is used to limit the bottom of the filter 2, and the fixing portion 3 is used to fix the top of the filter 2. In this way, under the fixing effect of the rotary buckle 31 and the limiting effect in the up, down, left and right directions, the filter 2 is firmly fixed, and there is no need to bend the filter 2 during the disassembly and assembly process, which saves effort and has high disassembly and assembly efficiency.

[0084] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A filter screen fixing structure, characterized in that: It comprises a mounting frame (1) and a fixing structure, wherein the fixing structure is arranged on the mounting frame (1), and the fixing structure is used to mount a filter screen (2) on the mounting frame (1); The fixed structure comprises: A fixing portion (3), the fixing portion (3) comprising a turn button (31) and a turn button matching portion (32), the turn button matching portion (32) being arranged on the installation frame (1), the turn button (31) being used for rotationally matching with the turn button matching portion (32) so as to spin-press and fix the filter screen (2) on the installation frame (1) or to release the filter screen (2) from the installation frame (1); A positioning portion, the positioning portion being arranged on the installation frame (1), and the positioning portion being suitable for abutting against an outer edge of the filter screen (2); The positioning portion comprises a first positioning portion (4), the first positioning portion (4) being arranged on a side of the installation frame (1) opposite to the fixing portion (3); the turn button (31) comprises a buckle (312), the buckle (312) being arranged on the back of the turn button (31); the turn button matching portion (32) comprises a turn button matching portion body (321), a buckle hole (322) being arranged on the turn button matching portion body (321), the buckle (312) being suitable for being inserted into the buckle hole (322) and abutting against the back of the turn button matching portion body (321) through the buckle hole (322); a matching surface (323) is formed on the back of the turn button matching portion body (321), and when the buckle (312) is rotated to the matching surface (323), When the rotary buckle (31) is in the first position or the second position, the rotary buckle (31) is in the first position, the rotary buckle (31) fixes the filter screen (2) on the installation frame (1), and when the rotary buckle (31) is in the second position, the rotary buckle (31) releases the filter screen (2) from the installation frame (1); the back of the rotary buckle matching part body (321) is also formed with a non-matching surface (324), and the matching surface (323) is arranged to protrude from the non-matching surface (324). When the buckle (312) rotates to the non-matching surface (324), the rotary buckle (31) is in a rotation process from the first position to the second position or from the second position to the first position.

2. The filter screen fixing structure according to claim 1, characterized in that: The first positioning portion (4) comprises a limiting groove, the limiting groove is connected to the inner wall of the installation frame (1), and the filter screen (2) is suitable for being inserted into the limiting groove.

3. The filter screen fixing structure according to claim 2, characterized in that: The limiting groove comprises a bottom plate (41), a limiting plate (42) and a reinforcing rib (43); the bottom plate (41) is protruding forward from the inner wall of the installation frame (1); the limiting plate (42) is arranged upward from the front end of the bottom plate (41); and the reinforcing rib (43) is arranged on the bottom plate (41) and connected to the limiting plate (42).

4. The filter screen fixing structure according to claim 1, characterized in that: The positioning portion further comprises a second positioning portion (5), wherein the second positioning portion (5) comprises a protruding structure protruding forward on the installation frame (1).

5. The filter screen fixing structure according to claim 4, characterized in that: The protruding structure comprises a positioning plate (51), and a side of the positioning plate (51) facing the filter screen (2) is suitable for abutting against the filter screen (2).

6. The filter screen fixing structure according to claim 5, characterized in that: The protruding structure further comprises a positioning side plate (52), and the positioning plate (51) and the positioning side plate (52) form a second groove-shaped structure (53).

7. The filter screen fixing structure according to claim 4, characterized in that: The mounting frame (1) comprises a frame body (11) and a connecting rib (12), wherein the connecting rib (12) is connected between two opposite inner walls of the frame body (11), the protruding structure is arranged on the connecting rib (12), the screw-on fitting portion (32) is connected to the inner wall of the frame body (11), and the center line of the screw-on fitting portion (32) is on the same straight line as the center line of the connecting rib (12).

8. The filter screen fixing structure according to claim 1, characterized in that: The turn-on fitting part (32) comprises a protruding rib (325), wherein the protruding rib (325) is arranged on the back of the turn-on fitting part body (321) and the matching surface (323) and the non-matching surface (324) are respectively formed on the back of the turn-on fitting part body (321), and the thickness of the protruding rib (325) formed at the matching surface (323) is greater than the thickness of the protruding rib (325) formed at the non-matching surface (324).

9. The filter screen fixing structure according to claim 8, characterized in that: The thickness of the protruding rib (325) formed on the non-matching surface (324) decreases gradually from close to the matching surface (323) to far away from the matching surface (323).

10. The filter screen fixing structure according to claim 1, characterized in that: The screw-on fitting portion (32) further comprises a first limiting rib (326), the two ends of which are respectively connected to the inner wall of the clamping hole (322), and the first limiting rib (326) intersects with the central axis of the clamping hole (322).

11. A mobile air conditioner rear enclosure, characterized in that: It comprises a shell and a filter fixing structure as described in any one of claims 1 to 10, wherein a mounting frame of the filter fixing structure is arranged on the shell.

12. A mobile air conditioner, characterized in that: It includes the filter fixing structure as described in any one of claims 1 to 10 or the rear shell of the mobile air conditioner as described in claim 11.

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