Plastic fan shell with anti-collision function

Abstract

The utility model provides a kind of plastic fan shell with anti-collision function, comprising: front shell, rear shell, protection mechanism and fixed assembly, front shell and rear shell are detachably installed together by fixed assembly, protection mechanism includes first buffer spring, buffer ring, first limit post, connecting groove, floating element and reinforcing assembly, installation groove is opened on the outer wall of front shell, first buffer spring is arranged inside installation groove, and one end of first buffer spring is connected with front shell, buffer ring is connected with the other end of first buffer spring, first limit post is arranged inside first buffer spring, and the other end of first limit post is connected with buffer ring, connecting groove is opened on the outer wall of rear shell.The utility model provides a kind of plastic fan shell with anti-collision function, by the setting of protection mechanism, when fan shell is impacted in different directions such as front and back, side and front, effectively absorb and disperse impact force, reduce the risk of shell damage.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic fan housings, and more particularly to a plastic fan housing with anti-collision function. Background Technology

[0002] The plastic fan housing is an important component of a fan. It not only protects the internal structure but also significantly impacts the fan's overall performance and appearance. The plastic fan housing effectively resists external impacts, reducing damage caused by collisions and extending the fan's lifespan.

[0003] Currently, when traditional plastic fan casings are subjected to external impact, most rely on their own hardness and toughness to resist the impact. However, this method has limited protective capabilities when facing large impacts. The casing may crack, deform, or even break, thus affecting the normal use of the fan and potentially posing certain safety hazards. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, this utility model provides a plastic fan housing with anti-collision function. Through the setting of the protective mechanism, it can effectively absorb and disperse the impact force when the fan housing is hit from different directions such as front, back, side and front, and reduce the risk of damage to the housing.

[0006] To achieve the above objectives, the first aspect of this utility model provides a plastic fan housing with anti-collision function, comprising: a front housing, a rear housing, a protective mechanism, and a fixing component. The front housing and the rear housing are detachably mounted together via the fixing component. The protective mechanism includes a first buffer spring, a buffer ring, a first limiting post, a connecting groove, a floating component, and a reinforcing component. An installation groove is provided on the outer wall of the front housing. The first buffer spring is disposed inside the installation groove, and one end of the first buffer spring is connected to the front housing. The buffer ring is connected to the other end of the first buffer spring. The first limiting post is disposed inside the first buffer spring, and the other end of the first limiting post is connected to the buffer ring. A connecting groove is provided on the outer wall of the rear housing. Two floating components are provided, and the two floating components are respectively disposed on the outer walls of the corresponding front housing and rear housing. The reinforcing component is disposed on the outer wall of the front housing.

[0007] In addition, the plastic fan housing with anti-collision function proposed above according to this utility model may also have the following additional technical features: Specifically, the fixing component includes a locking block, a return spring, a first latch, a second latch, and a limiting member. The locking block is disposed on the outer wall of the buffer ring, the return spring is disposed inside the locking block, the first latch is disposed at one end of the return spring, and the second latch is disposed at the other end of the return spring. A fixing hole is provided on the outer wall of the rear housing, and the limiting member is disposed on the inner wall of the locking block. Specifically, the limiting component includes a limiting block. Limiting grooves are respectively opened on the outer walls of the first buckle and the second buckle. Multiple limiting blocks are provided, and multiple limiting blocks are set on the inner wall of the buckle.

[0008] Specifically, the floating component includes rubber pillars, floating rings, and a second buffer spring. The rubber pillars are arranged in a ring array on the outer walls of the front and rear outer shells, and the floating rings are connected to the other end of the corresponding rubber pillars. The second buffer spring is arranged on the outer wall of the rubber pillars, and one end of the second buffer spring is connected to the corresponding front and rear outer shells, respectively. The second buffer spring is connected to the corresponding floating ring.

[0009] Specifically, the reinforcing components include a connecting plate, reinforcing ribs, buffers, and fasteners. The connecting plate is detachably mounted on the outer wall of the front housing via the buffers and fasteners. Multiple reinforcing ribs are provided, and the multiple reinforcing ribs are arranged in a ring array on the outer wall of the connecting plate.

[0010] Specifically, the buffer includes a third limiting post and a third buffer spring. One end of the third limiting post is connected to the front housing, and the other end of the third limiting post is connected to the connecting plate. The third buffer spring is disposed on the outer wall of the third limiting post, and one end of the third buffer spring is connected to the front housing, while the other end of the third buffer spring is connected to the connecting plate.

[0011] Specifically, the fastener includes a fixing screw and a filler plug. A groove is provided on the outer wall of the connecting plate. The fixing screw is located inside the groove and is threaded to the third limiting post after passing through the connecting plate. The filler plug is located inside the groove.

[0012] Specifically, the reset spring has a second limiting post inside, with one end of the second limiting post connected to the first buckle and the other end of the second limiting post connected to the second buckle.

[0013] Compared with the prior art, this utility model has the following beneficial effects: Through the protective mechanism, when the fan housing is impacted, the elastic deformation of the first, second, and third buffer springs effectively absorbs and buffers the impact force, preventing the housing from suffering significant direct damage. Simultaneously, the placement of the first, second, and third limiting posts ensures that each buffer spring does not bend excessively or shift under stress, ensuring the stability and reliability of the buffering effect.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of a plastic fan housing structure with anti-collision function according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a plastic fan housing protective mechanism with anti-collision function according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a plastic fan housing fixing assembly with anti-collision function according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a floating component structure for a plastic fan housing with anti-collision function according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a plastic fan housing reinforcement assembly with anti-collision function according to an embodiment of the present invention; Figure 6 A plastic fan housing with anti-collision function according to one embodiment of the present invention. Figure 2 Enlarged structural diagram at point A in the middle; Figure 7 A plastic fan housing with anti-collision function according to one embodiment of the present invention. Figure 3 Enlarged structural diagram at point B.

[0016] Reference numerals: 1. Front outer shell; 2. Rear outer shell; 3. Protective mechanism; 31. Mounting groove; 32. First buffer spring; 33. Buffer ring; 34. First limiting post; 35. Connecting groove; 4. Fixing component; 41. Locking block; 42. Return spring; 43. First buckle; 44. Second buckle; 45. Second limiting post; 46. Fixing hole; 47. Limiting component; 471. Limiting groove; 472. Limiting block; 5. Floating component; 51. Rubber column; 52. Floating ring; 53. Second buffer spring; 6. Reinforcing component; 61. Connecting plate; 62. Reinforcing rib; 63. Buffer component; 631. Third limiting post; 632. Third buffer spring; 64. Fixing component; 641. Groove; 642. Fixing screw; 643. Filler plug. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] The following description, with reference to the accompanying drawings, describes an embodiment of the present invention: a plastic fan housing with anti-collision function.

[0019] like Figures 1-7 As shown in the figure, a plastic fan housing with anti-collision function according to an embodiment of the present utility model includes: a front housing 1, a rear housing 2, a protective mechanism 3, and a fixing component 4.

[0020] The front housing 1 and the rear housing 2 are detachably mounted together by the fixing assembly 4. The protective mechanism 3 includes a first buffer spring 32, a buffer ring 33, a first limiting post 34, a connecting groove 35, a floating part 5, and a reinforcing assembly 6.

[0021] A mounting groove 31 is provided on the outer wall of the front housing 1. A first buffer spring 32 is disposed inside the mounting groove 31, and one end of the first buffer spring 32 is connected to the front housing 1. A buffer ring 33 is connected to the other end of the first buffer spring 32. A first limiting post 34 is disposed inside the first buffer spring 32, and the other end of the first limiting post 34 is connected to the buffer ring 33. A connecting groove 35 is provided on the outer wall of the rear housing 2. Two floating parts 5 are provided, and the two floating parts 5 are respectively disposed on the outer walls of the corresponding front housing 1 and rear housing 2. A reinforcing component 6 is disposed on the outer wall of the front housing 1.

[0022] The floating component 5 includes a rubber column 51, a floating ring 52, and a second buffer spring 53.

[0023] Rubber pillars 51 are arranged in a ring array on the outer walls of the front housing 1 and the rear housing 2, and floating rings 52 are respectively connected to the other end of the corresponding rubber pillars 51. Second buffer springs 53 are arranged on the outer walls of the rubber pillars 51, and one end of the second buffer springs 53 is respectively connected to the corresponding front housing 1 and the rear housing 2. The second buffer springs 53 are respectively connected to the corresponding floating rings 52.

[0024] Specifically, when the fan housing is subjected to frontal or rearal impacts, the front housing 1 or the rear housing 2 first transmits the impact force to the buffer ring 33. The front housing 1 and the rear housing 2 absorb and buffer part of the impact force through the elastic deformation of the first buffer spring 32. At the same time, the front housing 1 and the rear housing 2 are separated by the buffer ring 33, leaving a buffer space between them to prevent direct collisions and avoid significant damage caused by direct contact when the front housing 1 or the rear housing 2 is impacted. The first limiting post 34 prevents the first buffer spring 32 from excessively bending or shifting under force, ensuring the stability of the buffering effect. After the impact force dissipates, the first buffer spring 32 can return to its original shape, allowing the buffer ring 33 to return to its initial position.

[0025] When the fan housing is impacted from the side, the floating component 5 begins to function. The rubber pillars 51 and the second buffer spring 53 possess excellent elasticity, effectively absorbing and dispersing the impact force from the side. When the floating ring 52 is impacted, the rubber pillars 51 bend and deform to a certain extent, while the second buffer spring 53 is compressed, converting the impact force into elastic potential energy. During this process, the opposing rubber pillars 51 and second buffer spring 53 are stretched. In the process of stretching and compression, the rubber pillars 51 and second buffer spring 53 continuously disperse and absorb the impact force, preventing excessive localized stress that could damage the fan housing. Furthermore, the rubber pillars 51 are arranged in a ring array, ensuring that side impact forces from all directions are effectively handled, guaranteeing good protection for the fan housing when impacted from different sides.

[0026] In one embodiment of this application, such as Figure 3 and Figure 7 As shown, the fixing component 4 includes a locking block 41, a reset spring 42, a first latch 43, a second latch 44, and a limiting member 47.

[0027] The locking block 41 is set on the outer wall of the buffer ring 33, the reset spring 42 is set inside the locking block 41, and the first buckle 43 is set at one end of the reset spring 42, the second buckle 44 is set at the other end of the reset spring 42, the outer wall of the rear housing 2 is provided with a fixing hole 46, and the limiting member 47 is set on the inner wall of the locking block 41.

[0028] Specifically, when the front outer shell 1 and the rear outer shell 2 need to be installed together, the operator first aligns the locking block 41 on the buffer ring 33 with the fixing hole 46 on the rear outer shell 2, and then presses the locking block 41 into the fixing hole 46. During the pressing process, since the first latch 43 and the second latch 44 have a certain curvature on their contact surfaces with the rear outer shell 2, when the first latch 43 and the second latch 44 contact the inner wall of the rear outer shell 2, they will contract inward under pressure, and the return spring 42 will be compressed. After the locking block 41 has completely passed through the fixing hole 46, the return spring 42 restores its elastic deformation, pushing the first latch 43 and the second latch 44 to pop out and lock onto the outer wall of the rear outer shell 2, thereby achieving the connection between the front outer shell 1 and the rear outer shell 2. At the same time, the limiting member 47 can prevent the first latch 43 and the second latch 44 from disengaging from the locking block 41 when popping out, ensuring the reliability of the connection.

[0029] During disassembly, the operator only needs to press the first clip 43 and the second clip 44 into the clip block 41 to compress the return spring 42 again, so that the first clip 43 and the second clip 44 no longer clamp the outer wall of the rear outer shell 2. Then, the clip block 41 can be pulled out from the fixing hole 46 to separate the front outer shell 1 and the rear outer shell 2.

[0030] In one embodiment of this application, such as Figure 3 As shown, the limiting member 47 includes a limiting block 472.

[0031] Limiting grooves 471 are respectively provided on the outer walls of the first buckle 43 and the second buckle 44, and multiple limiting blocks 472 are provided, and the multiple limiting blocks 472 are provided on the inner wall of the buckle block 41.

[0032] Specifically, when the first latch 43 and the second latch 44 pop out under the action of the return spring 42, the limiting block 472 will be embedded in the corresponding limiting groove 471, which further restricts the range of motion of the first latch 43 and the second latch 44, preventing them from coming out of the latch block 41 during long-term use or when subjected to external impact, and ensuring that the connection between the front housing 1 and the rear housing 2 remains stable.

[0033] In one embodiment of this application, such as Figure 5 As shown, the reinforcing component 6 includes a connecting plate 61, a reinforcing rib 62, a buffer 63, and a fixing component 64.

[0034] The connecting plate 61 is detachably mounted on the outer wall of the front housing 1 via the buffer 63 and the fixing member 64. Multiple reinforcing ribs 62 are provided, and the multiple reinforcing ribs 62 are arranged in a ring array on the outer wall of the connecting plate 61.

[0035] The buffer 63 includes a third limiting post 631 and a third buffer spring 632.

[0036] One end of the third limiting post 631 is connected to the front outer shell 1, and the other end of the third limiting post 631 is connected to the connecting plate 61. The third buffer spring 632 is disposed on the outer wall of the third limiting post 631, and one end of the third buffer spring 632 is connected to the front outer shell 1, and the other end of the third buffer spring 632 is connected to the connecting plate 61.

[0037] The fastener 64 includes a fastening screw 642 and a filler plug 643.

[0038] A groove 641 is provided on the outer wall of the connecting plate 61. A fixing screw 642 is located inside the groove 641. The fixing screw 642 passes through the connecting plate 61 and is threadedly connected to the third limiting post 631. A filling plug 643 is located inside the groove 641.

[0039] Specifically, when the front of the front shell 1 is impacted, the impact force will first act on the connecting plate 61 and the reinforcing rib 62, preventing the impact force from acting directly on the relatively fragile front shell 1. The reinforcing rib 62 can enhance the structural strength of the connecting plate 61. At the same time, the connecting plate 61 further absorbs and buffers the impact force through the elastic deformation of the third buffer spring 632, while the third limiting post 631 can prevent the third buffer spring 632 from bending excessively or shifting under force, ensuring the stability of the buffering effect.

[0040] When installing the connecting plate 61, the worker passes the fixing screw 642 through the connecting plate 61 and connects it with the third limiting post 631 by thread, thereby fixing the connecting plate 61 to the front housing 1. Then, the filler plug 643 is inserted into the groove 641, which not only protects the fixing screw 642, but also makes the surface of the connecting plate 61 smoother and improves the aesthetics of the entire fan housing.

[0041] When it is necessary to disassemble the connecting plate 61 for maintenance or replacement, simply remove the filling plug 643 and unscrew the fixing screw 642. The operation is convenient and quick.

[0042] In one embodiment of this application, such as Figure 3 and Figure 7 As shown, the reset spring 42 has a second limiting post 45 inside, and one end of the second limiting post 45 is connected to the first buckle 43, and the other end of the second limiting post 45 is connected to the second buckle 44.

[0043] Understandably, the second limiting post 45 prevents the return spring 42 from excessive lateral bending or displacement during compression and recovery of elastic deformation. When the operator presses the first latch 43 and the second latch 44 to retract them into the locking block 41, they can limit the movement of the return spring 42, preventing excessive compression that could cause it to deform and be damaged, thus ensuring that the return spring 42 can always perform its elastic function normally.

[0044] Working principle: When the fan housing is impacted from the front or rear, the front housing 1 or the rear housing 2 first transmits the impact force to the buffer ring 33. The front housing 1 and the rear housing 2 absorb and buffer part of the impact force through the elastic deformation of the first buffer spring 32. At the same time, the front housing 1 and the rear housing 2 are separated by the buffer ring 33, leaving a buffer space between them to prevent direct collision and avoid significant damage caused by direct contact when the front housing 1 or the rear housing 2 is impacted. The first limiting post 34 prevents the first buffer spring 32 from excessively bending or shifting under force, ensuring the stability of the buffering effect. After the impact force dissipates, the first buffer spring 32 can return to its original shape, allowing the buffer ring 33 to return to its initial position.

[0045] When the fan housing is impacted from the side, the floating component 5 begins to function. The rubber pillars 51 and the second buffer spring 53 possess excellent elasticity, effectively absorbing and dispersing the impact force from the side. When the floating ring 52 is impacted, the rubber pillars 51 bend and deform to a certain extent, while the second buffer spring 53 is compressed, converting the impact force into elastic potential energy. During this process, the opposing rubber pillars 51 and second buffer spring 53 are stretched. In the process of stretching and compression, the rubber pillars 51 and second buffer spring 53 continuously disperse and absorb the impact force, preventing excessive localized stress that could damage the fan housing. Furthermore, the rubber pillars 51 are arranged in a ring array, ensuring that side impact forces from all directions are effectively handled, guaranteeing good protection for the fan housing when impacted from different sides.

[0046] Furthermore, when the front outer shell 1 and the rear outer shell 2 need to be installed together, the operator first aligns the locking block 41 on the buffer ring 33 with the fixing hole 46 on the rear outer shell 2, and then presses the locking block 41 into the fixing hole 46. During the pressing process, since the first latch 43 and the second latch 44 have a certain curvature in their contact surfaces with the rear outer shell 2, when the first latch 43 and the second latch 44 contact the inner wall of the rear outer shell 2, they will contract inward under pressure, and the return spring 42 will be compressed. After the locking block 41 has completely passed through the fixing hole 46, the return spring 42 restores its elastic deformation, pushing the first latch 43 and the second latch 44 to pop out and lock onto the outer wall of the rear outer shell 2, thereby achieving the connection between the front outer shell 1 and the rear outer shell 2. At the same time, the limiting member 47 can prevent the first latch 43 and the second latch 44 from disengaging from the locking block 41 when popping out, ensuring the reliability of the connection.

[0047] During disassembly, the operator only needs to press the first clip 43 and the second clip 44 into the clip block 41 to compress the return spring 42 again, so that the first clip 43 and the second clip 44 no longer clamp the outer wall of the rear outer shell 2. Then, the clip block 41 can be pulled out from the fixing hole 46 to separate the front outer shell 1 and the rear outer shell 2.

[0048] Meanwhile, by strengthening the protection of component 6, when the front of the front shell 1 is impacted, the impact force will first act on the connecting plate 61 and the reinforcing rib 62, preventing the impact force from acting directly on the relatively fragile front shell 1. The reinforcing rib 62 can enhance the structural strength of the connecting plate 61. At the same time, the connecting plate 61 further absorbs and buffers the impact force through the elastic deformation of the third buffer spring 632, while the third limiting post 631 can prevent the third buffer spring 632 from bending excessively or shifting under force, ensuring the stability of the buffering effect.

[0049] When installing the connecting plate 61, the worker passes the fixing screw 642 through the connecting plate 61 and connects it with the third limiting post 631 by thread, thereby fixing the connecting plate 61 to the front housing 1. Then, the filler plug 643 is inserted into the groove 641, which not only protects the fixing screw 642, but also makes the surface of the connecting plate 61 smoother and improves the aesthetics of the entire fan housing.

[0050] When it is necessary to disassemble the connecting plate 61 for maintenance or replacement, simply remove the filling plug 643 and unscrew the fixing screw 642. The operation is convenient and quick.

[0051] In summary, the plastic fan housing with anti-collision function of this utility model, the protective mechanism 3, can effectively absorb and disperse the impact force when the fan housing is hit from different directions such as front, back, side and front, and reduce the risk of damage to the housing.

[0052] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A plastic fan housing with anti-collision function, characterized in that, include: The front shell (1), rear shell (2), protective mechanism (3), and fixing assembly (4) are detachably mounted together via the fixing assembly (4). The protective mechanism (3) includes a first buffer spring (32), a buffer ring (33), a first limiting post (34), a connecting groove (35), a floating part (5), and a reinforcing assembly (6). The outer wall of the front shell (1) is provided with a mounting groove (31). The first buffer spring (32) is disposed inside the mounting groove (31), and one end of the first buffer spring (32) is connected to the mounting groove (6). The front outer shell (1) is connected, the buffer ring (33) is connected to the other end of the first buffer spring (32), the first limiting post (34) is disposed inside the first buffer spring (32), and the other end of the first limiting post (34) is connected to the buffer ring (33). A connecting groove (35) is provided on the outer wall of the rear outer shell (2). Two floating parts (5) are provided, and the two floating parts (5) are respectively disposed on the outer walls of the corresponding front outer shell (1) and the rear outer shell (2). The reinforcing component (6) is disposed on the outer wall of the front outer shell (1).

2. A plastic fan housing with anti-collision function according to claim 1, characterized in that, The fixing component (4) includes a locking block (41), a reset spring (42), a first buckle (43), a second buckle (44), and a limiting member (47). The locking block (41) is disposed on the outer wall of the buffer ring (33), the reset spring (42) is disposed inside the locking block (41), the first buckle (43) is disposed at one end of the reset spring (42), the second buckle (44) is disposed at the other end of the reset spring (42), a fixing hole (46) is provided on the outer wall of the rear shell (2), and the limiting member (47) is disposed on the inner wall of the locking block (41).

3. A plastic fan housing with anti-collision function according to claim 2, characterized in that, The limiting member (47) includes a limiting block (472). The outer walls of the first buckle (43) and the second buckle (44) are respectively provided with limiting grooves (471). Multiple limiting blocks (472) are provided, and multiple limiting blocks (472) are respectively provided on the inner wall of the buckle (41).

4. A plastic fan housing with anti-collision function according to claim 1, characterized in that, The floating component (5) includes a rubber column (51), a floating ring (52), and a second buffer spring (53). The rubber columns (51) are arranged in a ring array on the outer walls of the front shell (1) and the rear shell (2), and the floating ring (52) is connected to the other end of the corresponding rubber column (51). The second buffer spring (53) is arranged on the outer wall of the rubber column (51), and one end of the second buffer spring (53) is connected to the corresponding front shell (1) and the rear shell (2), respectively. The second buffer spring (53) is connected to the corresponding floating ring (52).

5. A plastic fan housing with anti-collision function according to claim 1, characterized in that, The reinforcing component (6) includes a connecting plate (61), reinforcing ribs (62), a buffer (63), and a fixing member (64). The connecting plate (61) is detachably mounted on the outer wall of the front housing (1) via the buffer (63) and the fixing member (64). Multiple reinforcing ribs (62) are provided, and the multiple reinforcing ribs (62) are arranged in a ring array on the outer wall of the connecting plate (61).

6. A plastic fan housing with anti-collision function according to claim 5, characterized in that, The buffer component (63) includes a third limiting post (631) and a third buffer spring (632). One end of the third limiting post (631) is connected to the front outer shell (1), and the other end of the third limiting post (631) is connected to the connecting plate (61). The third buffer spring (632) is disposed on the outer wall of the third limiting post (631), and one end of the third buffer spring (632) is connected to the front outer shell (1), and the other end of the third buffer spring (632) is connected to the connecting plate (61).

7. A plastic fan housing with anti-collision function according to claim 6, characterized in that, The fastener (64) includes a fixing screw (642) and a filler plug (643). A groove (641) is provided on the outer wall of the connecting plate (61). The fixing screw (642) is located inside the groove (641) and is threaded to the third limiting post (631) after passing through the connecting plate (61). The filler plug (643) is located inside the groove (641).

8. A plastic fan housing with anti-collision function according to claim 3, characterized in that, The reset spring (42) has a second limiting post (45) inside, and one end of the second limiting post (45) is connected to the first buckle (43), and the other end of the second limiting post (45) is connected to the second buckle (44).

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