Fan shell

Abstract

The utility model belongs to the technical field of fans, and discloses a fan shell which comprises an installation shell body and a rear cover, one side of the installation shell body is provided with an assembly opening, and the other side of the installation shell body is provided with an installation opening used for installing a stator and rotor assembly. The rear cover is arranged at the assembly opening, the surface, facing the installation shell body, of the rear cover is provided with an installation groove, the surface, deviating from the installation shell body, of the rear cover is an outer cover face, the groove bottom wall of the installation groove and the outer cover face are both provided with radial first reinforcing ribs, the groove bottom of the installation groove is provided with an energy absorption groove, and the energy absorption groove is provided with a second reinforcing rib. The energy absorption groove extends in the axis direction of the rear cover and forms a reinforcing boss on the outer cover face, and the first reinforcing rib is arranged in a manner of avoiding the reinforcing boss. The fan shell provided by the utility model can reduce the emission of noise, and has higher noise reduction performance.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan casing. Background Art

[0002] Vehicle air conditioning systems are used to cool, heat, ventilate, and purify the air within a vehicle's cabin, providing a comfortable riding environment for passengers. The blower is a key component of the vehicle's air conditioning system, driving the air flow. The noise generated by the blower during operation directly affects passenger comfort.

[0003] In the prior art, a blower includes a housing, a stator, a rotor, and an impeller. The stator and the rotor are at least partially installed in the housing. The impeller and the rotor are connected by a rotating shaft. When the rotor rotates, it can drive the impeller to rotate, thereby driving the gas. During the operation of the blower, the stator winding is energized to generate a magnetic field, which can drive the rotor including the magnet to rotate. When the winding is energized, a large amount of heat is generated. Therefore, a heat sink is usually provided in the housing to dissipate heat from the winding. In the prior art, in order to facilitate the installation of the circuit board, the tail of the housing is usually set to an open structure, which causes the noise generated in the housing to dissipate through the opening structure at the tail, thereby causing the noise emitted from the blower to be relatively large. Utility Model Content

[0004] The purpose of the utility model is to provide a fan housing that can reduce noise emission and has high noise reduction performance.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Fan casing, including:

[0007] A mounting shell body, wherein one side of the mounting shell body has an assembly opening, and the other side of the mounting shell body has an installation opening for installing the stator and rotor assembly;

[0008] A back cover is arranged at the assembly port, and a mounting groove is provided on the surface of the back cover facing the mounting shell body, and the surface of the back cover facing away from the mounting shell body is an outer cover surface, the bottom wall of the mounting groove and the outer cover surface are both provided with radial first reinforcing ribs, the bottom of the mounting groove is provided with an energy absorption groove, the energy absorption groove extends along the axial direction of the back cover and forms a reinforcing boss on the outer cover surface, and the first reinforcing rib is arranged to avoid the reinforcing boss.

[0009] Optionally, there are multiple reinforcing bosses, and the multiple reinforcing bosses are axially symmetrically arranged.

[0010] Optionally, a vertically connected horizontal plate and vertical plate are provided in the energy absorption groove, and the horizontal plate and the vertical plate divide the energy absorption groove into a plurality of energy absorption sub-grooves.

[0011] Optionally, the outer cover surface includes a first step surface and a second step surface arranged in a stepped shape, the first step surface is closer to the mounting shell body than the second step surface, the second step surface includes a plane area and a reinforcement rib area, the reinforcement boss is arranged in the plane area, and the reinforcement rib area and the first step surface are both provided with the first reinforcement rib.

[0012] Optionally, a third reinforcing rib is provided between the first stepped surface and the second stepped surface and / or between the reinforcing boss and the second stepped surface.

[0013] Optionally, the fan housing further includes a heat sink, at least part of which is disposed within the mounting shell body, and the rear cover cooperates with the mounting groove of the heat sink to form an accommodating space for mounting a circuit board.

[0014] Optionally, the back cover is provided with a positioning column, the outer peripheral surface of the positioning column is provided with an elastic supporting protrusion, the heat sink is provided with a positioning hole, the positioning column is passed through the positioning hole, and the elastic supporting protrusion can abut against the hole wall of the positioning hole.

[0015] Optionally, the fan housing also includes a shock-absorbing assembly, the mounting shell body is provided with a plurality of limiting grooves, the edge of the heat sink has a plurality of fixing parts, the shock-absorbing assembly includes a plurality of shock-absorbing parts, and the plurality of shock-absorbing parts are arranged at intervals along a first direction, and the shock-absorbing parts are correspondingly arranged in the limiting grooves, and the end of the shock-absorbing part in the first direction, the end in the second direction and the end away from the axis of the mounting shell are all abutted against the groove wall of the limiting groove, and the shock-absorbing part is provided with a pocket groove at one end facing the central axis of the mounting shell, and the plurality of pocket grooves correspond one-to-one to the plurality of fixing parts, and each fixing part is limited in the pocket groove corresponding thereto. Among them, the first direction is the circumferential direction of the mounting shell, the second direction is perpendicular to the first direction, and the second direction is the axial direction of the mounting shell.

[0016] Optionally, the shock absorber is provided with a mounting through hole passing through the shock absorber along the second direction, and the inner wall of the mounting through hole is provided with a plurality of ridges extending along the second direction; the mounting shell has a shock absorbing column passing through the mounting through hole.

[0017] Optionally, the groove wall of the pocket groove facing away from the axis of the mounting shell is a first arc-shaped groove wall, and the surface of the fixing portion facing away from the axis of the mounting shell includes a first arc-shaped mating surface, which abuts against the first groove wall.

[0018] Beneficial effects of the utility model:

[0019] The assembly port of the mounting shell body is provided with a rear cover, so that the rear cover can isolate the noise at the tail of the blower assembly from radiating to the outside. The setting of the first reinforcing rib and the reinforcing boss can ensure the structural strength of the rear cover, and at the same time ensure the uniformity of the force on the rear cover. The energy-absorbing groove at the bottom of the mounting groove can buffer the impact force on the rear cover, thereby further reducing the noise generated by the fan casing, so that the noise generated by the fan casing as a whole can be smaller, and the noise radiated outward is even smaller, so that the blower assembly using the fan casing can achieve low-noise operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a blower assembly provided by an embodiment of the present utility model;

[0021] Figure 2 This is a first exploded view of the blower assembly provided by an embodiment of the present utility model;

[0022] Figure 3 This is a second exploded view of the blower assembly provided by an embodiment of the present utility model;

[0023] Figure 4 This is a first structural schematic diagram of a fan housing provided by an embodiment of the present utility model;

[0024] Figure 5 This is a second structural schematic diagram of the fan housing provided by an embodiment of the present utility model;

[0025] Figure 6 This is an exploded view of the fan housing provided by an embodiment of the present utility model;

[0026] Figure 7 This is a schematic structural diagram of a shock-absorbing member provided by an embodiment of the present utility model;

[0027] Figure 8 is a top view of the shock absorbing member provided in an embodiment of the present utility model;

[0028] Figure 9 This is a schematic diagram of the assembly of the shock absorber and the heat sink provided in an embodiment of the present utility model;

[0029] Figure 10 This is a first structural schematic diagram of a heat sink provided by an embodiment of the present utility model;

[0030] Figure 11 This is a second structural schematic diagram of the heat sink provided by an embodiment of the present utility model;

[0031] Figure 12 This is a schematic structural diagram of a portion of a fan housing provided by an embodiment of the present utility model;

[0032] Figure 13 This is a schematic structural diagram of an elastic sealing ring provided by an embodiment of the present utility model;

[0033] Figure 14 This utility model Figure 13 The enlarged view of point A is shown;

[0034] Figure 15 This is a schematic diagram of the assembly of the elastic sealing ring, the rear cover and the heat sink provided by an embodiment of the present utility model;

[0035] Figure 16 This utility model Figure 15 The enlarged view of point B is shown;

[0036] Figure 17 This is a schematic diagram of the first structure of the back cover provided by an embodiment of the present utility model;

[0037] Figure 18 This is a second structural diagram of the back cover provided by an embodiment of the present utility model;

[0038] Figure 19 This is a partial enlarged view of the rear cover and the heat sink after assembly provided by an embodiment of the present utility model;

[0039] Figure 20 It is a cross-sectional view of the fan housing provided by an embodiment of the present utility model.

[0040] In the picture:

[0041] 100, mounting shell; 110, limiting groove; 120, mounting space; 130, mounting shell body; 1301, assembly opening; 1302, mounting opening; 131, first shell; 1311, shock-absorbing column; 132, second shell; 140, rear cover; 141, first reinforcing rib; 142, reinforcing boss; 143, cover body; 144, mounting boss; 1441, first clamping groove; 1442, first boss surface; 1443, second boss surface; 1444, second clamping groove; 145, mounting groove; 146, outer cover surface; 1461, first stepped surface; 1462, second stepped surface; 147, energy-absorbing groove; 148, horizontal plate; 149, vertical plate; 14a, third reinforcing rib; 150, positioning column; 151, elastic support protrusion;

[0042] 200, heat sink; 201, heat sink; 210, fixing portion; 211, bump; 212, arc-shaped mating surface; 220, positioning hole; 230, heat dissipation column;

[0043] 300, shock-absorbing assembly; 310, shock-absorbing member; 311, pocket groove; 3111, arc-shaped groove wall; 312, abutting end wall; 320, clamping group; 321, clamping block; 330, mounting through hole; 331, ridge; 340, abutting protrusion; 350, extended protrusion;

[0044] 400, elastic sealing ring; 410, skirt; 411, first arc surface; 412, second arc surface; 420, extension; 421, third arc surface; 430, second reinforcing rib; 440, sealing ring body; 450, first elastic protrusion; 460, second elastic protrusion;

[0045] 500, stator and rotor assembly; 510, stator assembly; 511, enameled wire; 512, insert; 520, magnetic tile; 530, housing; 540, rotating shaft; 550, insert shock-absorbing rubber; 560, insert retainer; 570, first bearing; 580, second bearing;

[0046] 600, impeller;

[0047] 700, terminal block; 800, circuit board;

[0048] X, first direction; Y, second direction; Z, central axis. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0050] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0051] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0054] This embodiment provides a blower assembly that can produce less noise and provide higher comfort when used in a vehicle air-conditioning system.

[0055] like Figures 1 to 3 As shown, the blower assembly at least includes a blower housing (not shown in the figure), a stator and rotor assembly 500 , a terminal block 700 and a circuit board 800 .

[0056] The circuit board 800 is arranged in the fan housing, the terminal block 700 is installed in the fan housing and is electrically connected to the circuit board 800, and the terminal block 700 is used to insert a connector to provide power to the circuit board 800. Figure 3As shown, the stator-rotor assembly 500 is at least partially mounted within the fan housing and includes a stator assembly 510, a magnetic tile 520, a housing 530, a rotating shaft 540, a first bearing 570, and a second bearing 580. The stator assembly 510 is fixedly connected to the fan housing, and the enameled wire 511 of the stator assembly 510 is electrically connected to the circuit board 800. For example, the enameled wire 511 is electrically connected to the circuit board 800 via an insert 512, so that electrical energy transmitted to the circuit board 800 can be transmitted to the enameled wire 511. The insert 512 is fixedly connected to the fan housing via an insert holder 560. The insert holder 560 is also provided with a rubberized insert 512 shock absorber disposed between the insert 512 and the insert holder 560. The provision of the rubberized insert 512 shock absorber can reduce noise generated by collisions between the insert 512 and the insert holder 560.

[0057] In this embodiment, the magnetic tiles 520 are arranged around the outer periphery of the stator assembly 510 and fixedly connected to the inner wall of the housing. When energized, the enameled wire 511 generates a magnetic field, which drives the magnetic tiles 520 and the housing 530 to rotate. The specific driving principle can be found in the prior art and will not be described in detail in this embodiment. The rotating shaft 540 is coaxially connected to the housing 530, so that rotation of the housing 530 drives the rotating shaft 540. One end of the rotating shaft 540 is rotatably mounted to the fan housing via a first bearing 570 and a second bearing 580. The other end extends outside the fan housing and is coaxially connected to the impeller 600. The circuit board 800 transmits electrical energy to the enameled wire 511. When energized, the enameled wire 511, acting as a winding, generates a magnetic field, which drives the magnetic tiles 520 to rotate. The magnetic tiles 520, in turn, rotate the housing 530 and the rotating shaft 540. The rotating shaft 540, in turn, drives the impeller 600, thereby driving the flow of fluid.

[0058] For example, the fan housing includes a mounting shell 100, a heat sink 200 and a shock absorbing assembly 300. For ease of description, this embodiment defines a first direction X and a second direction Y. Figure 5 As shown, the first direction X is the circumferential direction of the mounting shell 100. Figure 6 As shown, the second direction Y is the axial direction of the mounting housing 100, that is, the first direction X is perpendicular to the second direction Y. The axial directions of the mounting housing 100, the rotating shaft 540, the stator assembly 510, and the impeller 600 are the same.

[0059] See Figure 6 The mounting shell 100 is provided with a plurality of limiting grooves 110. For example, the plurality of limiting grooves 110 are spaced apart along the first direction X. Figure 2 As shown, the mounting housing 100 has an installation space 120 for installing the stator-rotor assembly 500 , and at least a portion of the stator-rotor assembly 500 is installed in the installation space 120 .

[0060] The heat sink 200 in this embodiment is used to dissipate heat from the blower assembly. For details, please continue to refer to Figure 6 The heat sink 200 in this embodiment includes a heat sink 201 located within the mounting housing 100 . The edge of the heat sink 201 has a plurality of fixing portions 210 . The fixing portions 210 are spaced apart along the first direction X along the edge of the heat sink 201 . For example, the fixing portions 210 protrude from the heat sink 201 in a direction away from the axis of the heat sink 201 .

[0061] The shock absorbing assembly 300 in this embodiment is used to reduce the noise between the mounting shell 100 and the heat sink 201. Specifically, Figure 5 and Figure 6 As shown, the shock absorbing assembly 300 includes a plurality of shock absorbing members 310, and the plurality of shock absorbing members 310 are spaced apart along the first direction X. The plurality of shock absorbing members 310 correspond one-to-one to the plurality of limiting grooves 110, and each shock absorbing member 310 is correspondingly arranged in the limiting groove 110. In this embodiment, the end of the shock absorbing member 310 in the first direction X, the end in the second direction Y, and the end away from the central axis Z of the mounting shell 100 are all in contact with the groove wall of the limiting groove 110, so that the limiting groove 110 can limit the shock absorbing member 310 in the first direction X and the second direction Y, and can also limit the movement of the shock absorbing member 310 away from the axis of the mounting shell 100. Please refer to the embodiment of the present invention. Figure 6 and Figure 7 As shown, a pocket groove 311 is defined at one end of the shock absorbing member 310 facing the central axis Z of the mounting housing 100. Each shock absorbing member 310 defines one pocket groove 311. The pocket grooves 311 correspond one-to-one to the fixing portions 210. Each fixing portion 210 is positioned within its corresponding pocket groove 311, thereby connecting the heat sink 201 to the mounting housing 100 via the shock absorbing members 310.

[0062] It should be noted that the shock absorber 310 in this embodiment is an elastic structure, that is, the shock absorber 310 has a shock-absorbing function, that is, the shock absorber 310 has the ability to generate elastic deformation. For example, the shock absorber 310 can achieve shock absorption through its own structure, for example, the shock absorber 310 is provided with an elastic structure such as a spring; the shock absorber 310 can also achieve shock absorption through its own material, for example, the material of the shock absorber 310 can be an elastic material such as rubber or silicone, but this embodiment is not limited to this.

[0063] The fan housing provided in this embodiment has a mounting shell 100 provided with a plurality of limiting grooves 110 for limiting the shock absorber 310, so that the mounting shell 100 can limit the movement of the shock absorber 310 in the first direction X, the second direction Y and the direction away from the central axis Z of the mounting shell 100, and the end surface of the shock absorber 310 facing the central axis Z of the mounting shell 100 is provided with a pocket groove 311, and the fixing portion 210 of the edge of the heat sink 201 can be placed in the corresponding pocket groove 311 and limited in the pocket groove 311, so that the shock absorber 310 can limit the movement of the shock absorber 310 in the first direction X, the second direction Y and the direction away from the central axis Z of the mounting shell 100, and the plurality of shock absorbers 310 are spaced apart in the first direction X so that the plurality of shock absorbers 310 supports the heat sink 200 at different positions in the first direction X, thereby preventing the heat sink 200 from translating relative to the mounting housing 100 in a direction perpendicular to the second direction Y, thereby preventing the heat sink 200 from translating and rotating relative to the mounting housing 100. This allows the heat sink 200 to be connected to the mounting housing 100 via the shock-absorbing assembly 300, avoiding direct contact between the heat sink 200 and the mounting housing 100 and preventing the heat sink 200 from colliding with the mounting housing 100 during vibration. The shock-absorbing assembly 310 cushions the noise generated by the collision between the heat sink 200 and the mounting housing 100, thereby reducing the noise level of the fan housing, blower assembly, and vehicle air conditioning system during operation and improving the noise reduction performance of the blower assembly. When used in a vehicle air conditioning system, the blower assembly can produce less noise, thereby improving the comfort of vehicles equipped with the vehicle air conditioning system.

[0064] In some optional embodiments, there are three shock absorbers 310, three limiting grooves 110, and three fixing portions 210, and the three fixing portions 210 are evenly spaced in the first direction X, that is, the three fixing portions 210 are arranged at 120° on the edge of the heat sink 201, and the three shock absorbers 310 are also arranged at 120°, which improves the uniformity of supporting the heat sink 201, enables the three shock absorbers 310 to be evenly stressed, improves the uniformity of wear of the shock absorbers 310, and avoids premature failure of a certain shock absorber 310 due to excessive wear. However, there is no need to provide too many shock absorbers 310. Providing too many shock absorbers 310 will increase the weight of the fan housing, which is not conducive to lightweighting the fan housing. If there are fewer than three shock absorbers 310, the balance of supporting the heat sink 201 will be reduced, causing the heat sink 201 to rotate relative to the mounting shell 100.

[0065] In some optional embodiments, the stator and rotor assembly 500 is mounted on the heat sink 200, specifically, as Figure 10As shown, the heat sink 200 further includes a heat sink column 230, which is coaxially connected to the heat sink plate 201. The heat sink column 230 is a hollow structure, and the first bearing 570 and the second bearing 580 are both disposed within the heat sink column 230, realizing a rotational connection between the rotating shaft 540 and the heat sink column 230. The stator assembly 510 is riveted onto the heat sink 200. Specifically, the stator assembly 510 is riveted onto the heat sink column 230, allowing the heat sink 230 to absorb heat generated by the enameled wire 511 of the stator assembly 510, thereby achieving efficient heat dissipation of the enameled wire 511.

[0066] For example, the fixing portion 210 can be positioned in various ways within the pocket groove 311. In this embodiment, the fixing portion 210 is clamped in the corresponding pocket groove 311 in the second direction Y, thereby improving the integrity of the fixing portion 210 and the shock absorber 310, thereby improving the shock absorption and noise reduction effects of the shock absorber 310.

[0067] Further optionally, as Figure 7 and Figure 9 As shown, the shock absorber 310 has at least one clamping group 320. At least part of each clamping group 320 is located in the pocket groove 311, that is, the clamping group 320 may have a part located in the pocket groove 311 and a part located outside the pocket groove 311. Each clamping group 320 includes two clamping blocks 321 arranged opposite to each other in the second direction Y, and the fixing part 210 is clamped between the two clamping blocks 321. The clamping method of the clamping blocks 321 is adopted to realize point-type fixation of the fixing part 210. The contact area between the fixing part 210 and the clamping blocks 321 is relatively small. Compared with the surface-type fixation, it can reduce the difficulty of inserting the fixing part 210 into the pocket groove 311 while ensuring the clamping effect, thereby reducing the difficulty of assembling the fan housing. In this embodiment, the portion of the clamping block 321 located outside the pocket groove 311 can abut against the portion of the heat sink 201 except the fixed portion 210, thereby achieving point contact with the portion of the heat sink 201 except the fixed portion 210, so that a buffer space can be formed between the portion of the heat sink 201 except the fixed portion 210 and the shock absorber 310, which is beneficial to buffering the heat sink 201.

[0068] In this embodiment, when a plurality of clamping groups 320 are provided, the plurality of clamping groups 320 are spaced apart along the first direction X to improve the strength of the clamping fixing portion 210 .

[0069] In some optional embodiments, such as Figure 10As shown, both surfaces of the fixing portion 210 in the second direction Y are provided with a plurality of protrusions 211. The protrusions 211 are spaced apart along the first direction X and are all located in the pockets 311. A clamping block 321 is provided between two adjacent protrusions 211 located on the same surface in the first direction X. The protrusions 211 and the clamping blocks 321 are alternately arranged in the first direction X. This improves the reliability of the shock absorber 310 in limiting the fixing portion 210 in the second direction Y, further enhancing the shock absorption effect on the heat sink 200. In some optional embodiments, the clamping block 321 is clamped between two adjacent protrusions 211 in the first direction X, further improving the integrity of the heat sink 201 and the shock absorber 310.

[0070] Please continue to see Figure 10 and Figure 11 The protrusion 211 is set at the edge of the fixing part 210, so that when the fixing part 210 and the shock absorber 310 are assembled, the positioning assembly of the fixing part 210 and the shock absorber 310 can be achieved by aligning the gap between the clamping block 321 and the adjacent protrusion 211.

[0071] For example, Figure 7 or Figure 8 As shown, the shock absorber 310 is provided with a mounting hole 330 that passes through the shock absorber 310 along the second direction Y. In this embodiment, the inner wall of the mounting hole 330 is provided with a plurality of ridges 331 extending along the second direction Y, and the plurality of ridges 331 are arranged at intervals along the circumference of the mounting hole 330. Figure 6 and Figure 20 As shown, the mounting housing 100 has a shock-absorbing column 1311 extending through the mounting hole 330. By providing a plurality of ridges 331 on the wall of the mounting hole 330, the ridges 331 can evenly contact the shock-absorbing column 1311 when the shock-absorbing member 310 vibrates, thereby ensuring that the vibration generated by the blower assembly during operation is well dispersed on the shock-absorbing column 1311. Furthermore, the provision of the plurality of ridges 331 can also achieve a good centering effect.

[0072] In some optional embodiments, such as Figure 2 As shown, the mounting shell 100 includes a mounting shell body 130. Figure 3 As shown, one side of the mounting shell body 130 in the axial direction has an assembly opening 1301, as shown in FIG. Figure 4 As shown, the other side of the mounting housing body 130 in the axial direction has a mounting opening 1302 for mounting the stator-rotor assembly 500. Exemplarily, the mounting housing body 130 includes a first shell 131 and a second shell 132. At least a portion of the heat sink 200 is disposed within the mounting housing body 130 and is connected to the mounting housing body 130.

[0073] In this embodiment, the mounting shell body 130 is provided with a plurality of retaining grooves 110. Specifically, the heat sink 201 is disposed within the space enclosed by the first shell 131 and the second shell 132. The first shell 131 has an installation space 120 for mounting the stator and rotor assembly 500. The first shell 131 and the second shell 132 cooperate to form the retaining grooves 110. For example, a recess in the first shell 131 facing the second shell 132 cooperates with the second shell 132 to form the retaining grooves 110, or a recess in the second shell 132 facing the first shell 131 cooperates with the first shell 131 to form the retaining grooves 110, or alternatively, a recess in the first shell 131 and a recess in the second shell 132 cooperate to form the retaining grooves 110, although this embodiment is not limited thereto. A shock-absorbing column 1311 is disposed on the surface of the first shell 131 facing the second shell 132. Bolts pass through the second shell 132 and are screwed to the shock-absorbing column 1311 to connect the first shell 131 and the second shell 132.

[0074] Further optionally, the mounting through hole 330 and the pocket groove 311 are independent of each other, and the mounting through hole 330 is arranged on the side of the pocket groove 311 away from the central axis Z of the mounting shell 100, that is, the shock absorber 310 in this embodiment has a pocket-shaped structure on the side close to the central axis Z of the mounting shell 100, and has a ring-shaped structure on the side away from the central axis Z of the mounting shell 100. The pocket-shaped structure is used for shock absorption and noise reduction between the heat dissipation plate 201 and the mounting shell 100, and the ring-shaped structure is used for shock absorption and noise reduction between the first shell 131 and the second shell 132, so that the entire fan housing has higher shock absorption and noise reduction performance.

[0075] In this embodiment, the pocket groove 311 has an arc-shaped arc-shaped groove wall 3111, which is bent away from the central axis Z of the mounting shell 100, and the fixing portion 210 includes an arc-shaped arc-shaped mating surface 212. Specifically, the surface of the fixing portion 210 away from the central axis Z of the mounting shell 100 includes an arc-shaped arc-shaped mating surface 212, and the arc-shaped mating surface 212 abuts against the arc-shaped groove wall 3111.

[0076] Further optionally, the multiple protrusions 211 on the fixing portion 210 include an arc-shaped block (not shown in the figure), the outer side surface of the arc-shaped block is coplanar with the arc-shaped mating surface 212, so that the arc-shaped block forms a claw-like structure and is clamped on the arc-shaped groove wall 3111, thereby improving the support effect on the heat sink 201 in the radial direction of the mounting shell 100.

[0077] In some optional embodiments, such as Figure 7 and Figure 8 As shown, the pocket groove 311 of the shock-absorbing member 310 is in a closed shape, that is, the area of ​​the pocket groove 311 is smaller than the area of ​​the interior.

[0078] Exemplarily, the two abutting end walls 312 of the shock absorbing member 310 in the first direction X are both inclined walls, that is, the shock absorbing member 310 has a semi-trapezoidal structure. In this way, the contact between the abutting end wall 312 of the shock absorber 310 and the groove wall of the limiting groove 110 (that is, the mounting shell 100) is point contact, so as to ensure that the heat dissipation plate 201 and the heat dissipation column 230 can be well aligned, thereby ensuring that the stator and rotor assembly 500 installed on the heat dissipation column 230 can be better aligned; and, the vibration generated during the operation of the blower assembly can be well transmitted to the mounting shell 100 through the abutting end wall 312, and the point contact can also play a certain vibration attenuation effect; in addition, the abutting end wall 312 of the shock absorber 310 is in point contact with the mounting shell 100 in the first direction X, so that there is a part of the abutting end wall 312 that is not in contact with the mounting shell 100, and thus there is an active gap between the abutting end wall 312 and the mounting shell 100, so as to meet the small movement of the shock absorber 310 relative to the mounting shell 100 in the first direction X.

[0079] Further optionally, the length of the end of the shock absorber 310 close to the central axis Z of the mounting shell 100 in the first direction X is smaller than the length of the end of the shock absorber 310 away from the central axis Z of the mounting shell 100 in the first direction X, that is, along the direction of the shock absorber 310 pointing to the central axis Z of the mounting shell 100, the length of the shock absorber 310 in the first direction X gradually decreases. In this way, on the one hand, the abutting position between the abutting end wall 312 and the limiting groove 110 is closer to the bottom of the limiting groove 110, which reduces the probability of failure of the abutment between the abutting end wall 312 and the limiting groove 110 due to vibration, and improves the reliability of the limiting shock absorber 310 of the limiting groove 110; on the other hand, at the position of the notch of the limiting groove 110, there is a larger buffer space between the shock absorber 310 and the groove wall of the limiting groove 110, and the buffer space is used to buffer the vibration of the heat sink 200, preventing the heat sink 201 from having a large collision with the groove wall of the limiting groove 110 during vibration, thereby reducing damage to the shock absorber 310 and avoiding the generation of large noise.

[0080] In this embodiment, the portion of the abutting end wall 312 that contacts the wall of the limiting groove 110 is arc-shaped so as to play a buffering role.

[0081] In some optional embodiments, please continue to see Figure 7 The outer wall of the shock absorber 310 has abutting protrusions 340, which abut against the groove wall of the limiting groove 110. By providing the abutting protrusions 340 and abutting against the groove wall of the limiting groove 110, multiple buffer spaces are formed between the shock absorber 310 and the groove wall of the limiting groove 110. The buffer spaces are used to buffer the collision between the heat sink 201 and the mounting housing 100, reducing damage to the shock absorber 310 and preventing the generation of large noise.

[0082] For example, Figure 7 and Figure 8 As shown, one or more abutment protrusions 340 are provided on both outer side walls of the shock absorber 310 in the second direction Y and on the outer side of the end wall facing away from the central axis Z of the mounting housing 100, thereby forming multiple buffer spaces. The abutment protrusions 340 on the outer side walls of the shock absorber 310 in the second direction Y correspond one-to-one with the clamping blocks 321 in the pocket groove 311, and each abutment protrusion 340 coincides with the orthographic projection of the corresponding clamping block 321 in the first direction X.

[0083] Alternatively, see Figure 7 and Figure 8 The end surface of the shock absorber 310 facing the central axis Z of the mounting shell 100 is provided with a plurality of spaced apart extended protrusions 350, and the extended protrusions 350 can contact the portion of the heat sink 201 other than the fixed portion 210. In this embodiment, the length of the extended protrusion 350 is less than the length of the portion of the clamping block 321 outside the pocket groove 311. It should be noted that when the blower assembly is not in operation, the extended protrusion 350 does not contact the heat sink 201, and there is a gap between the two. When the blower assembly is in operation and the vibration amplitude is large, the portion of the heat sink 201 other than the fixed portion 210 will first squeeze the portion of the clamping block 321 outside the pocket groove 311, causing the portion to deform first, and then squeeze the extended protrusion 350, so that the cooperation between the extended protrusion 350 and the clamping block 321 forms a double buffer, further improving the shock absorption effect and noise reduction performance.

[0084] In some optional embodiments, the shock-absorbing member 310 is an integrated structure, which is easy to manufacture on the one hand, and can have a higher shock-absorbing strength on the other hand.

[0085] Alternatively, as Figure 3 As shown, the mounting case 100 in this embodiment further includes a back cover 140. A mounting opening 1301 is defined on one side of the mounting case body 130, and the back cover 140 is positioned within the opening 1301. In this embodiment, the back cover 140 is provided with radially shaped first reinforcing ribs 141. The provision of the first reinforcing ribs 141 enhances the structural strength of the back cover 140 and reduces noise.

[0086] Alternatively, see Figure 3 The fan housing further includes an elastic sealing ring 400. The elastic sealing ring 400 is disposed on the edge of the rear cover 140 and is used to seal and reduce shock between the rear cover 140 and the mounting housing 130. In this embodiment, the elastic sealing ring 400 is fixedly connected to the edge of the rear cover 140.

[0087] Specifically, if Figures 12 to 16As shown, the elastic sealing ring 400 has a skirt 410 and an extension 420. The skirt 410 extends toward the mounting shell body 130 and is sealed against the mounting shell body 130. The extension 420 extends toward the heat sink 200 and is sealed against the heat sink 200. Specifically, the skirt 410 is sealed against the second shell 132, and the extension 420 is sealed against the heat sink 201. In addition, the elastic sealing ring 400 seals the gap between the mounting shell body 130 and the back cover 140, and seals the gap between the heat sink 200 and the back cover 140, so as to form a relatively sealed mounting shell 100. In addition, the elastic sealing ring 400 is a structure with a certain degree of elasticity, that is, the elastic sealing ring 400 is an elastic structure. For example, the material of the elastic sealing ring 400 can be an elastic material such as rubber or silicone. By providing the elastic sealing ring 400 , the elastic sealing ring 400 can buffer the impact between the mounting shell body 130 and the rear cover 140 , and can also buffer the impact between the rear cover 140 and the heat dissipation plate 201 , thereby achieving higher noise reduction performance.

[0088] In the fan housing provided by this embodiment, the elastic sealing ring 400 is arranged on the rear cover 140, and the skirt 410 of the elastic sealing member extends toward the mounting shell body 130, and the extension portion 420 of the elastic sealing member extends toward the heat sink 200, so that the elastic sealing ring 400 can seal the gap between the mounting shell body 130 and the rear cover 140, and can also seal the gap between the heat sink 200 and the rear cover 140, so that the portion of the mounting shell body 130 close to the rear cover 140 can be more sealed, thereby improving the sealing performance of the mounting shell 100. Moreover, when the blower assembly generates vibration during operation, the elastic sealing ring 400 can be used to buffer the space between the mounting shell body 130 and the rear cover 140, as well as between the rear cover 140 and the heat sink 200, so that the mounting shell body 130 will not directly collide with the rear cover 140, and there will be no direct collision between the rear cover 140 and the heat sink 200, thereby reducing the impact noise of the fan casing, so that the fan casing and the blower assembly using the fan casing can have lower noise, which is conducive to the silent operation of the blower assembly.

[0089] Alternatively, as Figure 13 and Figure 14As shown, the skirt 410 is annular and has an arc shape. The arc-shaped skirt 410 can produce a large elastic deformation, thereby being able to adapt to changes in the gap between the mounting shell body 130 and the back cover 140, and has high adaptability. For example, the skirt 410 is bent toward the bottom of the mounting shell 100. The skirt 410 in this embodiment includes a first arc surface 411, which is sealed against the mounting shell body 130, so that the skirt 410 and the mounting shell body 130 have a large contact area, thereby improving the sealing performance. In addition, when the mounting shell body 130 moves relative to the back cover 140, the first arc surface 411 can squeeze the skirt 410, facilitating the radial deformation of the arc-shaped skirt 410, so as to better buffer the vibration of the mounting shell body 130 and reduce noise.

[0090] In some optional embodiments, such as Figure 15 and Figure 16 As shown, the skirt 410 also includes a second curved surface 412 disposed opposite the first curved surface 411. The first curved surface 411 and the second curved surface 412 are disposed opposite each other in the second direction Y. The second curved surface 412 has a plurality of second reinforcing ribs 430 spaced apart along the circumference of the elastic sealing ring 400. The second reinforcing ribs 430 serve to increase the structural strength of the skirt 410, thereby enhancing its deformation resistance and enabling it to be better supported between the mounting housing body 130 and the rear cover 140, further enhancing the seismic resistance and noise reduction performance of the mounting housing 100.

[0091] Further optionally, the second reinforcing rib 430 in this embodiment extends from the inner edge of the skirt 410 to the outer edge of the skirt 410, that is, one end of the second reinforcing rib 430 extends to the side of the second arc surface 412 close to the axis of the elastic sealing ring 400, and the other end extends to the side of the second arc surface 412 away from the axis of the elastic sealing ring 400, so that the second reinforcing rib 430 has a better supporting effect.

[0092] In some optional embodiments, such as Figure 14 As shown, the elastic sealing ring 400 also includes a sealing ring body 440. The sealing ring body 440 is arranged at the edge of the back cover 140. The skirt 410 is connected to the outer side of the sealing ring body 440 in the circumferential direction, and the extension 420 is connected to the inner side of the sealing ring body 440 in the circumferential direction. The extension 420 in this embodiment includes a third curved surface 421, which is sealed against the heat sink 200. By providing the third curved surface 421, the contact area between the extension 420 and the heat sink 200 can be increased, and the extension 420 can have a large deformation ability, so that the extension 420 can adapt to the changes in the gap between the heat sink 200 and the back cover 140, thereby improving the sealing performance and noise reduction performance.

[0093] In some optional embodiments, such as Figure 17 As shown, the rear cover 140 includes a cover body 143 and a mounting boss 144 provided on the edge of the cover body 143. At least a portion of the elastic sealing ring 400 is provided on the mounting boss 144, for example, the sealing ring body 440 of the elastic sealing ring 400 is connected to the mounting boss 144. Figure 18 As shown, the mounting boss 144 has first clamping grooves 1441 arranged at circumferential intervals along the back cover 140, and the elastic sealing ring 400 has multiple first elastic protrusions 450. The multiple first elastic protrusions 450 are clamped one by one in the multiple first clamping grooves 1441 to achieve the connection between the mounting boss 144 and the elastic sealing ring 400, thereby improving the connection strength between the two and reducing the probability of the elastic sealing ring 400 being separated from the back cover 140.

[0094] Further optionally, as Figure 17 and Figure 18 As shown, the mounting boss 144 includes a first boss surface 1442 and a second boss surface 1443 that are arranged opposite each other in the axial direction (i.e., the second direction Y) of the rear cover 140. A first clamping groove 1441 is provided on the first boss surface 1442, and a plurality of second clamping grooves 1444 are provided on the second boss surface 1443. The plurality of first clamping grooves 1441 and the plurality of second clamping grooves 1444 are alternately arranged in the circumferential direction of the rear cover 140, so that both the first clamping grooves 1441 and the second clamping grooves 1444 can be relatively deep. The elastic sealing ring 400 also includes a plurality of second elastic protrusions 460, and the plurality of second elastic protrusions 460 are clamped one by one in the plurality of second clamping grooves 1444. In this way, the connection strength between the elastic sealing ring 400 and the mounting boss 144 can be further improved. The first clamping groove 1441 and the second clamping groove 1444 limit the elastic sealing ring 400, so as to prevent the elastic sealing ring 400 from moving relative to the mounting boss 144 in the second direction Y, thereby realizing the limitation of the elastic sealing ring 400 in the second direction Y. In addition, the first clamping groove 1441 and the second clamping groove 1444 are alternately arranged in the circumferential direction of the back cover 140, and the two are not connected, so that the first clamping groove 1441 and the second clamping groove 1444 can cooperate with each other to limit the movement of the elastic sealing ring 400 in the radial direction of the back cover 140, thereby enabling the elastic sealing ring 400 to be firmly fixed on the mounting boss 144.

[0095] In some optional embodiments, when the elastic sealing ring 400 includes a sealing ring body 440, as shown in FIG. Figure 16As shown, one end face of the sealing ring body 440 in the axial direction of the rear cover 140 is flush with the first boss surface 1442, and the other end face of the sealing ring body 440 in the axial direction of the rear cover 140 is flush with the second boss surface 1443. This not only allows the sealing ring body 440 to have a larger connection area with the mounting boss 144, thereby ensuring connection strength, but also reduces consumable materials.

[0096] For example, the elastic sealing ring 400 can be injection molded onto the edge of the back cover 140, that is, the elastic sealing ring 400 can be injection molded onto the mounting boss 144, to further enhance the connection strength between the elastic sealing ring 400 and the back cover 140 and reduce the chance of separation between the two. Of course, it is understood that the elastic sealing ring 400 can also be connected to the back cover 140 in other ways, which is not limited in this embodiment.

[0097] Optionally, as shown in FIG Figure 3 As shown in FIG17 , the surface of the rear cover 140 facing the housing body 130 is provided with a mounting groove 145, and the surface of the rear cover 140 facing away from the housing body 130 is an outer cover surface 146. The bottom wall of the mounting groove 145 and the outer cover surface 146 are both provided with radially arranged first reinforcing ribs 141. The first reinforcing ribs 141 serve to increase the structural strength of the rear cover 140, reduce the chance of damage to the rear cover 140, and ensure uniform stress distribution on the rear cover 140. In this embodiment, the first reinforcing ribs 141 are radially arranged to uniformly increase the structural strength of each part of the rear cover 140, thereby ensuring the overall strength of the rear cover 140.

[0098] In this embodiment, an energy-absorbing groove 147 is provided at the bottom of mounting groove 145. This groove 147 extends along the axis of rear cover 140 and forms a reinforcing boss 142 on outer cover surface 146. First reinforcing rib 141 is positioned to avoid reinforcing boss 142. Energy-absorbing groove 147 cushions impact forces on rear cover 140, thereby reducing noise from the entire fan housing.

[0099] The fan casing provided in this embodiment is provided with a rear cover 140 on the assembly opening 1301 of the mounting shell body 130, so that the rear cover 140 can isolate the noise at the tail of the blower assembly from radiating outward, and the setting of the first reinforcing rib 141 and the reinforcing boss 142 can ensure the structural strength of the rear cover 140, while ensuring the uniformity of the force on the rear cover 140. The energy absorption groove 147 at the bottom of the mounting groove 145 can buffer the impact force on the rear cover 140, thereby further reducing the noise generated by the fan casing, so that the noise generated by the fan casing as a whole can be smaller, and the noise radiated outward is even smaller, so that the blower assembly using the fan casing can achieve low-noise operation.

[0100] In some optional embodiments, multiple reinforcing bosses 142 are provided, that is, multiple energy-absorbing grooves 147 are provided. Multiple reinforcing bosses 142 are axially symmetrically arranged on the outer cover surface 146 of the rear cover 140 to uniformly increase the structural strength of the rear cover 140 and evenly cushion the impact force on the rear cover 140, further improving the uniformity of the force applied to the rear cover 140 and further reducing the noise of the entire fan housing. In this embodiment, two reinforcing bosses 142 are provided, and the two reinforcing bosses 142 are symmetrically arranged about an axis of symmetry passing through the axis of the rear cover 140.

[0101] Alternatively, as Figure 17 As shown, energy absorption groove 147 is provided with a vertically connected horizontal plate 148 and vertical plate 149. The horizontal plate 148 and vertical plate 149 divide the energy absorption groove 147 into multiple energy absorption sub-grooves (not shown). Each energy absorption sub-groove thus functions as an energy absorption space. The horizontal plate 148 and vertical plate 149 disperse the impact force transmitted to the rear cover 140, further enhancing the cushioning effect of the energy absorption groove 147 and the noise reduction effect.

[0102] It is understood that the energy-absorbing groove 147 may not have the horizontal plate 148 and the vertical plate 149, and this embodiment is not limited to this. When multiple energy-absorbing grooves 147 are provided, some energy-absorbing grooves 147 may have the horizontal plate 148 and the vertical plate 149, while other energy-absorbing grooves 147 may not have the horizontal plate 148 and the vertical plate 149, and this embodiment is not limited to this.

[0103] In this embodiment, the rear cover 140 and the heat sink 200 cooperate to form a housing space (not shown) for accommodating the circuit board 800. Specifically, the mounting groove 145 of the rear cover 140 cooperates with the heat sink 201 to form the housing space. The circuit board 800 is placed in the housing space. The rear cover 140 also has a socket hole (not shown) for the wiring socket 700 to pass through, thereby smoothly connecting the wiring socket 700 to the circuit board 800.

[0104] For example, Figure 18As shown, the outer cover surface 146 includes a first stepped surface 1461 and a second stepped surface 1462 arranged in a stepped shape. The first stepped surface 1461 is closer to the mounting housing body 130 than the second stepped surface 1462; that is, the second stepped surface 1462 protrudes from the first stepped surface 1461. The second stepped surface 1462 includes a planar region (not shown) and a reinforcing rib region (not shown). The reinforcing boss 142 is provided in the planar region, and both the reinforcing rib region and the first stepped surface 1461 are provided with first reinforcing ribs 141. The stepped design of the outer cover surface 146 facilitates the installation of the terminal block 700, allowing the socket of the terminal block 700 to face one side of the rear cover 140 rather than the bottom. Furthermore, the stepped design of the outer cover surface 146 forms two sub-grooves of different depths within the mounting groove 145, further enhancing the energy absorption efficiency of the rear cover 140.

[0105] Alternatively, see Figure 18 A third reinforcing rib 14 a is provided between the first step surface 1461 and the second step surface 1462 , and the third reinforcing rib 14 a is used to increase the structural strength of the back cover 140 .

[0106] Exemplarily, a third reinforcing rib 14 a is provided between the reinforcing boss 142 and the second stepped surface 1462 , and the third reinforcing rib 14 a is used to enhance the connection strength between the reinforcing boss 142 and the second stepped surface 1462 .

[0107] In some optional embodiments, such as Figure 19 As shown, the rear cover 140 is provided with a positioning post 150, and the outer peripheral surface of the positioning post 150 is provided with an elastic support protrusion 151. The heat sink 200 is provided with a positioning hole 220, and the positioning post 150 is inserted into the positioning hole 220, and the elastic support protrusion 151 can abut against the hole wall of the positioning hole 220. The provision of the positioning post 150 and the positioning hole 220 facilitates the positioning and installation of the rear cover 140 and the heat sink 200. In addition, the provision of the elastic support protrusion 151 facilitates the centering of the heat sink 201 and prevents hard collisions between the positioning post 150 and the heat sink 201, thereby further reducing the noise generated during the operation of the fan housing.

[0108] The utility model also provides a vehicle air-conditioning system, including the above blower assembly, which can produce lower noise during operation and improve user comfort.

[0109] During operation of the blower assembly provided in this embodiment, the circuit board 800 supplies current to the enameled wire 511. When energized, the enameled wire 511 generates a magnetic field, which drives the magnetic tile 520 to rotate. The magnetic tile 520 drives the housing 530 and the impeller 600 to rotate via the rotating shaft 540, thereby achieving power output. When the stator and rotor assembly 500 is in operation, it generates vibrations, which in turn drives the heat sink 200 to move relative to the mounting shell body 130 and the rear cover 140. The heat sink 200 is connected to the mounting shell body 130 via the shock absorber 310 to prevent collision between the heat sink 200 and the mounting shell body 130, thereby preventing the generation of loud noise. An elastic sealing ring 400 is provided between the heat sink 200 and the rear cover 140 to prevent direct collision between the heat sink 200 and the rear cover 140, thereby preventing the generation of loud noise. The skirt portion 410 of the elastic sealing ring 400 is located between the rear cover 140 and the mounting housing 130, thereby preventing collision between the mounting housing 130 and the rear cover 140 and thus preventing the generation of loud noise. Consequently, the noise generated by the blower assembly provided in this embodiment can be relatively low. Furthermore, the vibration of the stator and rotor assembly 500 can be evenly transmitted to the rear cover 140. The rear cover 140, with its first reinforcing ribs 141 and reinforcing bosses 142, has a high structural strength, preventing noise from dissipating through the rear cover 140 and further reducing the overall noise of the blower assembly.

[0110] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Fan housing, characterized in that: include: A mounting shell body (130), wherein one side of the mounting shell body (130) has an assembly opening (1301), and the other side of the mounting shell body (130) has an installation opening (1302) for installing a stator and rotor assembly (500); A rear cover (140) is provided at the assembly opening (1301), and a mounting groove (145) is provided on the surface of the rear cover (140) facing the mounting shell body (130), and a surface of the rear cover (140) facing away from the mounting shell body (130) is an outer cover surface (146), a groove bottom wall of the mounting groove (145) and the outer cover surface (146) are both provided with a radial first reinforcing rib (141), an energy absorbing groove (147) is provided at the groove bottom of the mounting groove (145), the energy absorbing groove (147) extends along the axial direction of the rear cover (140) and forms a reinforcing boss (142) on the outer cover surface (146), and the first reinforcing rib (141) is arranged to avoid the reinforcing boss (142).

2. The fan housing according to claim 1, characterized in that: There are a plurality of reinforcing bosses (142), and the plurality of reinforcing bosses (142) are axially symmetrically arranged.

3. The fan housing according to claim 1, characterized in that: A transverse plate (148) and a vertical plate (149) connected vertically are provided in the energy absorption groove (147), and the transverse plate (148) and the vertical plate (149) divide the energy absorption groove (147) into a plurality of energy absorption sub-grooves.

4. The fan housing according to claim 1, characterized in that: The outer cover surface (146) includes a first step surface (1461) and a second step surface (1462) arranged in a stepped shape, the first step surface (1461) is closer to the mounting shell body (130) than the second step surface (1462), the second step surface (1462) includes a plane area and a reinforcing rib area, the reinforcing boss (142) is arranged in the plane area, and the reinforcing rib area and the first step surface (1461) are both provided with the first reinforcing rib (141).

5. The fan housing according to claim 4, characterized in that: A third reinforcing rib (14a) is provided between the first stepped surface (1461) and the second stepped surface (1462) and / or between the reinforcing boss (142) and the second stepped surface (1462).

6. The fan housing according to claim 1, characterized in that: The fan housing further comprises a heat sink (200), at least a portion of which is disposed within the mounting housing body (130), and the rear cover (140) cooperates with the mounting groove (145) of the heat sink (200) to form an accommodating space for mounting a circuit board (800).

7. The fan housing according to claim 6, characterized in that: The rear cover (140) is provided with a positioning column (150), the outer peripheral surface of the positioning column (150) is provided with an elastic supporting protrusion (151), the heat dissipation element (200) is provided with a positioning hole (220), the positioning column (150) is passed through the positioning hole (220), and the elastic supporting protrusion (151) can abut against the hole wall of the positioning hole (220).

8. The fan housing according to claim 6, characterized in that: The fan housing further comprises a shock absorbing assembly (300), the mounting shell body (130) is provided with a plurality of limiting grooves (110), the edge of the heat sink (200) has a plurality of fixing portions (210), the shock absorbing assembly (300) comprises a plurality of shock absorbing members (310), the plurality of shock absorbing members (310) are arranged at intervals along a first direction (X), the shock absorbing members (310) are correspondingly arranged in the limiting grooves (110), and the ends of the shock absorbing members (310) in the first direction (X), the ends in the second direction (Y) and the direction away from the axis of the mounting shell (100) are respectively One end of each is in contact with the groove wall of the limiting groove (110), and a pocket groove (311) is provided at one end of the shock-absorbing member (310) facing the central axis (Z) of the mounting shell (100), and a plurality of the pocket grooves (311) correspond one-to-one to a plurality of the fixing portions (210), and each of the fixing portions (210) is limited in the pocket groove (311) corresponding thereto, wherein the first direction (X) is the circumferential direction of the mounting shell (100), the second direction (Y) is perpendicular to the first direction (X), and the second direction (Y) is the axial direction of the mounting shell (100).

9. The fan housing according to claim 8, characterized in that: The shock-absorbing member (310) is provided with a mounting through hole (330) that passes through the shock-absorbing member (310) along the second direction (Y); the inner wall of the mounting through hole (330) is provided with a plurality of ridges (331) extending along the second direction (Y); and the mounting shell (100) has a shock-absorbing column (1311) that passes through the mounting through hole (330).

10. The fan housing according to claim 9, characterized in that: The groove wall of the pocket groove (311) facing away from the axis of the mounting shell (100) is an arc-shaped arc-shaped groove wall (3111), and the surface of the fixing portion (210) facing away from the axis of the mounting shell (100) includes an arc-shaped arc-shaped matching surface (212), and the arc-shaped matching surface (212) abuts against the arc-shaped groove wall (3111).

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