Fan and range hood

Abstract

The fan comprises an impeller assembly, a motor assembly and a locking assembly, the impeller assembly is provided with a wheel disc, the wheel disc is provided with a first end face and a second end face which are oppositely arranged, the motor assembly is provided with an output shaft, and the output shaft penetrates through the wheel disc from the first end face and is provided with a first shaft section protruding out of the second end face. The locking assembly is provided with a locking piece and a sliding limiting piece, the first shaft section is sleeved with the locking piece, the locking piece is sleeved with the sliding limiting piece, and the sliding limiting piece can move between a locking position and an unlocking position relative to the locking piece; when the sliding limiting piece is located at the locking position, the wheel disc is located on the output shaft through the locking piece. When the sliding limiting piece is located at the unlocking position, the output shaft can be separated relative to the wheel disc. According to the utility model, the wheel disc and the output shaft can be quickly mounted or dismounted, the mounting or dismounting efficiency is improved, meanwhile, the corrosion of oil stains on the locking piece is reduced, and the problems that the mounting or dismounting is relatively difficult due to the oil stains, even the mounting cannot be in place and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a fan and a range hood. Background Art

[0002] As people's quality of life improves, their expectations for kitchen cooking environments are also growing. Range hoods have become an indispensable appliance in modern homes. A range hood uses a motor to drive the impeller at high speed, creating a negative pressure zone near the smoke collection chamber, drawing fumes into the hood and exhausting them outdoors.

[0003] In existing range hoods, the impeller mounting structure is mostly like this: the impeller center disc is riveted to the sleeve, the motor shaft passes through the sleeve, and is locked by a threaded connection using a locking component. That is, the impeller and motor shaft are locked and fixed by the shaft end, so that the impeller rotates with the motor shaft. Because the motor shaft and the locking component are connected and fixed by a threaded structure, to ensure the stability of the impeller and motor shaft, the thread structure usually has a certain stroke, resulting in a long installation or removal time, which leads to low installation or removal efficiency. Some threaded structures are exposed to oil smoke for a long time, and oil stains may clog the threads, making the installation or removal process more difficult or even impossible to install. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a fan is provided, and the technical solution is as follows.

[0005] The fan includes an impeller assembly, a motor assembly and a locking assembly, the impeller assembly has a wheel disc, the wheel disc has a first end face and a second end face arranged opposite to each other, the motor assembly has an output shaft, the output shaft passes through the wheel disc from the first end face and has a first shaft section protruding from the second end face; wherein, the locking assembly has a locking member and a sliding limit member, the locking member is sleeved on the first shaft section, the sliding limit member is sleeved outside the locking member and is movable between a locked position and an unlocked position relative to the locking member; when the sliding limit member is in the locked position, the wheel disc is positioned on the output shaft by the locking member; when the sliding limit member is in the unlocked position, the output shaft is separable relative to the wheel disc.

[0006] The fan of the present invention realizes rapid installation or disassembly of the wheel disc and the output shaft by moving the sliding limit member relative to the locking member between the locking position and the unlocking position, thereby improving the efficiency of installation or disassembly and ensuring the firmness of the connection. At the same time, the sliding limit member is arranged outside the locking member to reduce the erosion of the locking member by oil stains, avoiding the problems of difficulty in installation or disassembly or even inability to install in place due to oil stains.

[0007] Exemplarily, the locking member comprises a main body and a retaining member. The main body encloses a receiving cavity, and a through-hole is formed in the main body, communicating with the receiving cavity. The retaining member is disposed within the through-hole, and a retaining groove is provided along the circumferential direction of the first shaft segment. When the sliding limit member is in the locked position, the retaining member engages with the retaining groove. This arrangement allows the wheel disc to be positioned on the output shaft through the engagement of the retaining member and the retaining groove, ensuring a secure connection between the wheel disc and the output shaft while maintaining a simple structure and ease of processing.

[0008] For example, there are multiple retaining members and through-holes, each corresponding to the multiple retaining members, and the multiple retaining members and the multiple through-holes are circumferentially spaced apart on the main body. This arrangement improves the secure connection between the wheel disc and the output shaft, and the multiple retaining members can disperse the applied force. Furthermore, the multiple retaining members spaced apart circumferentially on the main body can more effectively and evenly distribute the applied force on each retaining member.

[0009] For example, the sliding limiter has an inner side surface with a limiting portion protruding from the inner side surface toward the main body. When the sliding limiter is in the locked position, the retaining member is restrained by the limiting portion to a position where it engages with the retaining slot. When the sliding limiter is in the unlocked position, the limiting portion releases the restraint on the retaining member. In this arrangement, the limiting portion is disposed on the inner side surface of the sliding limiter to reduce corrosion from oil stains. When the sliding limiter is in the locked position, the limiting portion restrains the retaining member in a position where it engages with the retaining slot, thereby ensuring a secure connection between the wheel disc and the output shaft. When the sliding limiter is in the unlocked position, the limiting portion releases the restraint on the retaining member. This simplifies operation and enhances the user experience.

[0010] For example, an elastic member is provided between the sliding limiter and the locking member, and the sliding limiter is positioned in the locked position by the elastic restoring force of the elastic member. This arrangement enables the sliding limiter to move between the locked and unlocked positions via the elastic member, resulting in a simple structure and cost savings. Furthermore, the elastic restoring force of the elastic member keeps the sliding limiter in the locked position, reducing operational steps and improving the user experience.

[0011] Exemplarily, the impeller assembly comprises a plurality of blades, which are annularly connected to a disk to form a blade ring. The disk is provided with a through hole extending from a first end face to a second end face, the center of the through hole being concentric with the center of the blade ring, and the first shaft segment being provided through the through hole. The motor assembly further comprises a body, the first shaft segment being sequentially connected to a connecting protrusion and a second shaft segment, the second shaft segment being connected to the body, the disk being provided with a plurality of latching portions around the through hole, the connecting protrusion being provided with a plurality of latching mating portions, the plurality of latching mating portions being respectively corresponding to and latching with the plurality of latching portions. In this arrangement, the first shaft segment is inserted into the through hole and locked by a locking assembly to achieve connection between the impeller assembly and the motor assembly, and the plurality of latching mating portions being respectively corresponding to and latching with the plurality of latching portions, thereby enhancing the connection stability between the impeller assembly and the output shaft, avoiding problems such as large noise and abnormal sound generated when the diameter of the blade ring is large or the rotation speed of the blade ring is fast, and improving the service life of the impeller assembly.

[0012] For example, a roulette wheel includes a body and a connecting seat disposed on one side of the body. A hole is provided through the body and the connecting seat, and a plurality of latches are provided on the connecting seat. This arrangement connects the output shaft to the body via the connecting seat, making it easy to clean or replace the connecting seat, reducing maintenance costs. Furthermore, the presence of multiple latches effectively distributes the applied force across each latch, improving the user experience.

[0013] For example, the connecting seat has a first end face away from the disk body, the connecting protrusion has a proximal end face close to the disk body, the proximal end face at least partially abuts the first end face, the latch portion is configured as a projection protruding from the first end face in a direction away from the disk body, and the latch-fitting portion is configured as a groove recessed from the proximal end face in a direction away from the first shaft segment; or the latch portion is configured as a groove recessed from the first end face in a direction toward the disk body, and the latch-fitting portion is configured as a projection protruding from the proximal end face in a direction toward the first shaft segment. With this arrangement, the proximal end face at least partially abuts the first end face, effectively enhancing the stability of the connection between the impeller assembly and the motor assembly. Furthermore, the latch portion and the latch-fitting portion are configured as a projection and a groove, ensuring a secure connection between the latch portion and the latch-fitting portion, while maintaining a simple structure and ease of processing.

[0014] For example, the connecting seat has a first end surface facing away from the disk body, the latch portion is recessed from the first end surface toward the disk body, and the latch-engaging portion protrudes radially outward from the outer edge of the connecting protrusion. Alternatively, the latch portion protrudes radially outward from the outer edge of the connecting seat, the connecting protrusion has a proximal end surface facing toward the disk body, and the latch-engaging portion is recessed from the proximal end surface toward the direction away from the first shaft segment. This arrangement ensures structural strength while reducing costs. The latch portion and the latch-engaging portion are constructed as a projection and a groove, ensuring a secure connection between the latch portion and the latch-engaging portion while facilitating processing.

[0015] According to another aspect of the present invention, a range hood is provided, comprising a housing and the aforementioned fan, the fan being disposed within the housing. Since the aforementioned fan has the aforementioned beneficial effects, a range hood including the aforementioned fan also has the aforementioned beneficial effects, which will not be described in detail herein.

[0016] The Summary of the Utility Model introduces a series of simplified concepts, which will be further described in detail in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0017] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0019] Figure 1 A cross-sectional view of a fan according to an exemplary embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a fan according to another exemplary embodiment of the present invention;

[0021] Figure 3 for Figure 2 Exploded view of the impeller assembly in Figure 1;

[0022] Figure 4 for Figure 2 A three-dimensional diagram of the connecting seat in FIG.

[0023] Figure 5 for Figure 2 A top view of the motor assembly in FIG.

[0024] Figure 6 for Figure 5 AA section view in;

[0025] Figure 7 for Figure 2 A bottom view of the locking member in FIG;

[0026] Figure 8 for Figure 2 A cross-sectional view of the locking member in FIG.

[0027] The above drawings include the following reference numerals:

[0028] 1. Fan; 10. Impeller assembly; 100. Blade ring; 110. Wheel disc; 111. First end surface; 112. Second end surface; 113. Through hole; 114. Clamping portion; 115. Disc body; 116. Connecting seat; 1161. Arc-shaped portion; 1162. First circle; 1163. First annular portion; 120. Blades; 130. Base plate; 140. Top plate; 20. Motor assembly; 210. Output shaft; 211. First shaft segment; 2111. Clamping slot; 2111a. First side wall; 2111b. Second side wall; 212. Connecting protrusion; 21 21. Latching fitting portion; 2122. Proximal surface; 2123. Connecting portion; 2124. Second circle; 2125. Second annular portion; 213. Second shaft segment; 220. Body; 30. Locking assembly; 310. Locking member; 311. Main body; 3111. Through hole; 312. Positioning member; 313. Accommodating cavity; 314. Outer surface; 320. Sliding limiting member; 321. Inner surface; 3211. Limiting portion; 330. Elastic member; 340. Sliding cavity; D1. First diameter; D2. Aperture; D3. Third diameter; D4. Fourth diameter. DETAILED DESCRIPTION

[0029] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0030] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0031] An embodiment of the present invention provides a fan. The fan provided by the present invention can be used in a range hood. The following describes a fan according to an embodiment of the present invention in detail with reference to the accompanying drawings.

[0032] See also Figure 1 、 Figure 2 、 Figure 7 and Figure 8The fan 1 may include an impeller assembly 10, a motor assembly 20 and a locking assembly 30. The impeller assembly 10 may have a wheel disc 110. The wheel disc 110 may have a first end face 111 and a second end face 112 arranged opposite to each other. The motor assembly 20 may have an output shaft 210. The output shaft 210 may pass through the wheel disc 110 from the first end face 111, and may have a first shaft section 211 protruding from the second end face 112. Among them, the locking assembly 30 may have a locking member 310 and a sliding limit member 320. The locking member 310 may be sleeved on the first shaft section 211. The sliding limit member 320 may be sleeved outside the locking member 310 and movable between a locked position and an unlocked position relative to the locking member 310. When the sliding limit member 320 is in the locked position, the wheel disc 110 can be positioned on the output shaft 210 through the locking member 310. When the sliding limiter 320 is located at the unlocking position, the output shaft 210 can be separated from the wheel disc 110 .

[0033] The fan 1 of the present invention realizes the rapid installation or disassembly of the wheel 110 and the output shaft 210 by moving the sliding limit member 320 relative to the locking member 310 between the locking position and the unlocking position, thereby improving the efficiency of installation or disassembly and ensuring the firmness of the connection. At the same time, the sliding limit member 320 is arranged outside the locking member 310 to reduce the erosion of the locking member 310 by oil stains, avoiding the problems of difficulty in installation or disassembly due to oil stains, or even inability to install in place.

[0034] See also Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8 The locking member 310 may have a main body 311 and a locking member 312. The main body 311 may enclose a receiving cavity 313, and a through hole 3111 communicating with the receiving cavity 313 may be provided on the main body 311. The locking member 312 may be arranged in the through hole 3111. The first shaft segment 211 may be provided with a slot 2111 along the circumferential direction. The slot 2111 may be formed by the outer wall of the first shaft segment 211 being recessed toward the central axis of the first shaft segment 211. When the sliding limit member 320 is in the locking position, the locking member 312 and the slot 2111 may be engaged with each other. The positioning of the wheel disc 110 on the output shaft 210 is achieved by engaging the locking member 312 with the slot 2111, thereby ensuring the firmness of the connection between the wheel disc 110 and the output shaft 210 while maintaining a simple structure and being easy to process. Preferably, the locking member 312 can be spherical in shape, which makes it easier to engage or separate the locking member 312 from the locking slot 2111. Of course, the locking member 312 can also be ellipsoidal in shape. It is understandable that the shape of the through hole 3111 is similar to that of the locking member 312, so that the locking member 312 can be easily positioned within the through hole 3111.

[0035] Furthermore, the slot 2111 includes a first sidewall 2111a and a second sidewall 2111b, with the first sidewall 2111a and the second sidewall 2111b being arranged opposite each other. The first sidewall 2111a can be inclined from the bottom wall of the slot to the outer wall surface of the first shaft segment 211 toward the central axis relative to the first shaft segment 211 and away from the second sidewall 2111b. The second sidewall 2111b can be inclined from the bottom wall of the slot to the outer wall surface of the first shaft segment 211 toward the central axis relative to the first shaft segment 211 and away from the first sidewall 2111a. In this way, when the retaining member 312 is engaged or separated from the slot 2111, the first sidewall 2111a or the second sidewall 2111b can guide the retaining member 312, thereby facilitating the engagement or separation of the retaining member 312 from the slot 2111.

[0036] See also Figure 1 、 Figure 2 、 Figure 7 and Figure 8 There can be multiple retaining members 312 and through-holes 3111. Multiple retaining members 312 can be provided in a one-to-one correspondence with the multiple through-holes 3111, and the multiple retaining members 312 and the multiple through-holes 3111 can be circumferentially spaced apart on the main body 311. This improves the secure connection between the wheel disc 110 and the output shaft 210, and the presence of multiple retaining members 312 can disperse the applied force. Furthermore, the circumferential spacing of the multiple retaining members 312 on the main body 311 can more effectively and evenly distribute the applied force across each retaining member 312.

[0037] It should be noted that, according to the number of the retaining members 312 and the through holes 3111 , the retaining groove 2111 can be configured as an annular retaining groove 2111 or an arc-segment retaining groove 2111 in the axial direction of the first shaft segment 211 .

[0038] See also Figure 1 、 Figure 2 、 Figure 6 and Figure 8The sliding limit member 320 may have an inner side surface 321. A limiting portion 3211 may protrude from the inner side surface 321 toward the main body 311. When the sliding limit member 320 is in the locked position, the locking member 312 may be limited by the limiting portion 3211 to a locking position in which it is locked with the locking slot 2111. It can be understood that the locking position may be a position in which the locking member 312 is at least partially placed in the locking slot 2111 and abuts against the bottom wall, first side wall 2111a, and second side wall 2111b of the locking slot 2111. When the sliding limit member 320 is in the unlocked position, the limiting portion 3211 may release the restriction on the locking member 312. The limiting portion 3211 is disposed on the inner side surface 321 of the sliding limiting member 320 to reduce corrosion by oil stains. When the sliding limiting member 320 is in the locked position, the limiting portion 3211 limits the locking member 312 to a locked position with the locking groove 2111, thereby ensuring the secure connection between the wheel disc 110 and the output shaft 210. When the sliding limiting member 320 is in the unlocked position, the limiting portion 3211 releases the restriction on the locking member 312, simplifying operation and improving the user experience. Specifically, the limiting portion 3211 and the sliding limiting member 320 can be an integrated structure. Of course, the limiting portion 3211 and the sliding limiting member 320 can also be a separate structure, for example, connected by adhesive connection, screw fixing, or other connection methods.

[0039] Preferably, when the sliding stopper 320 is in the locked position, the limiting portion 3211 can completely close the through-hole 3111 near one end of the sliding stopper 320, and the limiting portion 3211 at least partially abuts the locking member 312, thereby restricting the locking member 312 to the locked position with the locking slot 2111. In this way, the secure connection between the locking member 312 and the locking slot 2111 is ensured, thereby ensuring the secure connection between the wheel disc 110 and the output shaft 210, and preventing the locking member 312 from separating from the locking slot 2111. Of course, it is not ruled out that the limiting portion 3211 can partially close the through-hole 3111 near one end of the sliding stopper 320, and the limiting portion 3211 at least partially abuts the locking member 312.

[0040] See also Figure 7 and Figure 8 An elastic member 330 may be disposed between the sliding limiter 320 and the locking member 310. The sliding limiter 320 can be positioned in the locked position by the elastic restoring force of the elastic member 330. Thus, the elastic member 330 enables the sliding limiter 320 to move between the locked and unlocked positions, resulting in a simple structure and cost savings. Furthermore, the elastic restoring force of the elastic member 330 keeps the sliding limiter 320 in the locked position, reducing operational steps and improving the user experience. Specifically, the elastic member 330 may be a spring, which is easy to manufacture and process, saves costs, and is suitable for use in scenarios where space is limited.

[0041] Furthermore, a sliding cavity 340 may be defined between the inner side surface 321 of the sliding stopper 320 and the outer side surface 314 of the locking member 310, and the elastic member 330 may be disposed in the sliding cavity 340. When the locking assembly 30 is separated from the first shaft segment 211, the retaining member 312 may be at least partially disposed in the sliding cavity 340. Specifically, the sliding cavity 340 may be formed by the inner side surface 321 of the sliding stopper 320, the outer side surface 314 of the locking member 310, and the limiting portion 3211. Axially, the sliding cavity 340 may be located above the limiting portion 3211.

[0042] The following describes in detail the process of positioning the wheel disc 110 relative to the output shaft 210 through the locking assembly 30 and separating the wheel disc 110 from the output shaft 210:

[0043] See also Figure 1 、 Figure 2 、 Figure 6 and Figure 8 After the first shaft segment 211 of the output shaft 210 passes through the wheel disc 110 from the first end surface 111 and protrudes from the second end surface 112, the locking member 310 is sleeved onto the first shaft segment 211. The sliding stopper 320 is slid to the locked position by the elastic restoring force of the elastic member 330 (or manually). At this point, as the stopper 3211 slides toward the locked position, it pushes the retaining member 312, which is partially located within the sliding cavity 340, into the retaining groove 2111. The second sidewall 2111b of the retaining groove 2111 guides the retaining member 312 until the stopper 3211 closes the end of the through-hole 3111 near the sliding stopper 320, separating the through-hole 3111 from the sliding cavity 340 and engaging the retaining member 312 with the retaining groove 2111. In this manner, the wheel disc 110 is positioned relative to the output shaft 210 by the locking assembly 30.

[0044] When the locking assembly 30 is pulled out relative to the first shaft section 211, the first side wall 2111a of the card slot 2111 guides the locking assembly 312, so that the locking assembly 30 is separated from the card slot 2111, and part of the locking assembly 312 enters the sliding cavity 340, and finally, the separation of the wheel disc 110 relative to the output shaft 210 is completed.

[0045] See also Figures 1 to 6The impeller assembly 10 may have a plurality of blades 120. The plurality of blades 120 may be connected to the wheel disc 110 in an annular shape to form a blade ring 100. The wheel disc 110 may be provided with a through hole 113 extending from the first end surface 111 to the second end surface 112. The center of the through hole 113 and the center of the blade ring 100 may meet a concentric condition. The first shaft segment 211 may be passed through the through hole 113. The motor assembly 20 may also have a body 220. The first shaft segment 211 may be connected in sequence to a connecting protrusion 212 and a second shaft segment 213. The second shaft segment 213 may be connected to the body 220. The wheel disc 110 may be provided with a plurality of latching portions 114 around the through hole 113. The connecting protrusion 212 may be provided with a plurality of latching mating portions 2121. The plurality of latching mating portions 2121 may be latched with the plurality of latching portions 114 in a one-to-one correspondence. In this way, the first shaft segment 211 is passed through the penetration hole 113 and locked by the locking assembly 30 to realize the connection between the impeller assembly 10 and the motor assembly 20, and the multiple latching fitting parts 2121 and the multiple latching parts 114 are respectively latched one by one to enhance the connection stability between the impeller assembly 10 and the output shaft 210, avoiding the problems of large noise and abnormal sound when the diameter of the blade ring 100 is large or the rotation speed of the blade ring 100 is fast, and improving the service life of the impeller assembly 10.

[0046] Specifically, a plurality of latching portions 114 can be evenly spaced along the circumferential direction of the wheel disc 110, and a plurality of latching mating portions 2121 can be evenly spaced along the circumferential direction of the connecting protrusion 212. The number of latching portions 114 can be 3, 6, 8, etc. The latching portions 114 can be an integrally formed structure with the wheel disc 110. Of course, the latching portions 114 can also be a separate structure with the wheel disc 110. The latching portions 114 and the wheel disc 110 can be connected as a whole by welding, gluing, etc. The number of latching mating portions 2121 can also be 3, 6, 8, etc. There are multiple latch parts 114 and latch fitting parts 2121 that can disperse the force, and multiple latch parts 114 are evenly spaced along the circumferential direction of the wheel 110, and multiple latch fitting parts 2121 can be evenly spaced along the circumferential direction of the connecting protrusion 212, which can effectively and evenly disperse the force on each latch part 114 and latch fitting part 2121.

[0047] The wheel disc 110 can be connected to the middle part of the blade ring 100. Understandably, the disk body 115 can be a middle disk at this time. In this way, it can be applied to situations where a large air volume is required and the length of the blade 120 is relatively long. By connecting the wheel disc 110 to the middle part of the blade ring 100, the structural strength of the blade ring 100 is higher, and the blade 120 is prevented from being easily damaged. Of course, it is also applicable to situations where two blade rings 100 are connected through the disk body 115. Specifically, the impeller assembly 10 can also include a bottom plate 130 and a top plate 140. The bottom plate 130 and the top plate 140 can be respectively connected to the two ends of the blade ring 100. In this way, the structural strength of the blade ring 100 is further improved.

[0048] In an embodiment not shown in the figures, the wheel disc 110 can be connected to one end of the blade ring 100. It is understood that in this case, the wheel disc 110 can be a bottom plate 130 or a top plate 140, connected to the end of the blade ring 100. This arrangement is suitable for applications where the impeller assembly 10 is installed in a small space and the blades 120 are relatively short. Connecting the wheel disc 110 to one end of the blade ring 100 not only facilitates assembly and disassembly of the wheel disc 110, facilitating user maintenance and cleaning of the wheel disc 110, but also reduces costs. Of course, this arrangement is also suitable for applications where the blades 120 are relatively short.

[0049] See also Figures 1 to 4 The wheel disc 110 may include a disc body 115 and a connecting seat 116 disposed on one side of the disc body 115. A through-hole 113 may extend through the disc body 115 and the connecting seat 116. Multiple latches 114 may be disposed on the connecting seat 116. Connecting the output shaft 210 to the disc body 115 via the connecting seat 116 facilitates cleaning or replacement of the connecting seat 116, reducing maintenance costs. Furthermore, the presence of multiple latches 114 effectively distributes the applied force across each latch 114, improving the user experience. Specifically, the disc body 115 and the connecting seat 116 may be fixedly connected by rivets. Riveting offers advantages such as simple processing, high reliability, and ease of disassembly, as it is immune to mechanical vibration and other factors that may cause loosening. Of course, the disc body 115 and the connecting seat 116 may also be connected by welding, bolting, or other methods. It is understood that the end surface of the connecting seat 116 facing away from the disc body 115 may be the first end surface 111.

[0050] Furthermore, the connection base 116 may be provided with a plurality of arcuate portions 1161 around the through-hole 113. Each arcuate portion 1161 may be connected between two adjacent latch portions 114, and the plurality of arcuate portions 1161 may be formed on the same first circle 1162. The first circle 1162 may be concentric with the through-hole 113. This enhances the structural strength of the latch portion 114 and increases the mounting contact area of the latch portion 114, thereby further strengthening the connection stability between the impeller assembly 10 and the output shaft 210.

[0051] The first circle 1162 may have a first diameter D1, and the through hole 113 may have an aperture D2, where D1 ≥ D2. When D1 = D2, processing and manufacturing are facilitated, saving costs. When D1 > D2, the structural strength of the latch portion 114 is effectively enhanced, while the mounting contact area is effectively increased, further strengthening the connection stability between the impeller assembly 10 and the output shaft 210, and reducing noise or abnormal sounds generated during rotation. It is understandable that when D1 = D2, the first circle 1162 may be the through hole 113, and when D1 > D2, a first annular portion 1163 may be formed between the arc portion 1161 and the through hole 113.

[0052] In some embodiments, in conjunction with Figure 3 and Figure 4 , D1>D2, and the latch portion 114 and the first annular portion 1163 can both be grooves. In this case, the latch portion 114 and the first annular portion 1163 can be recessed from the first end surface 111.

[0053] In some embodiments, D1>D2, and the latch portion 114 and the first annular portion 1163 can both be protrusions. In this case, the latch portion 114, the first annular portion 1163, and the connecting seat 116 can be an integrally formed structure, and the latch portion 114 and the first annular portion 1163 can be formed by protruding from the first end surface 111. Of course, it is not ruled out that at least two of the latch portion 114, the first annular portion 1163, and the connecting seat 116 can be split structures. When at least two of the latch portion 114, the first annular portion 1163, and the connecting seat 116 are split structures, they can be connected into one piece by welding, gluing, or other connection methods.

[0054] In some embodiments, D1>D2, and one of the latch portion 114 and the first annular portion 1163 may be a protrusion, while the other may be a groove. In this case, the groove may be formed as a depression from the end surface of the connecting base 116 away from the disk body 115, and the protrusion may be formed as a protrusion from the end surface of the connecting base 116 away from the disk body 115. The protrusion may be an integral structure with the connecting base 116. Of course, the protrusion may also be a separate structure from the connecting base 116, and connected to the connecting base 116 as a whole through welding, gluing, or other connection methods.

[0055] In some embodiments, in the radial direction, the relationship between the latch portion 114 , the first annular portion 1163 and the connecting seat 116 may be such that the total length of the latch portion 114 and the first diameter D1 is less than or equal to the length of the connecting seat 116 .

[0056] In some embodiments, D1=D2, and the connection base 116 may only have a latch portion 114, which may be a protrusion or a groove. When the latch portion 114 is a groove, the latch portion 114 may be recessed from the end surface of the connection base 116 away from the disk body 115. When the latch portion 114 is a protrusion, the latch portion 114 may be an integrally formed structure with the connection base 116, and the latch portion 114 may protrude from the first end surface 111. Of course, the latch portion 114 may also be a separate structure from the connection base 116, and connected to the connection base 116 as a whole through welding, gluing, or other connection methods.

[0057] In some embodiments, in the radial direction, the relationship between the latch portion 114 , the through hole 113 and the connecting seat 116 may be such that the total length of the latch portion 114 and the hole diameter D2 is less than or equal to the length of the connecting seat 116 .

[0058] In some embodiments, the latch portion 114 may directly protrude radially outward from the outer edge of the connecting seat 116 .

[0059] In some embodiments, the latch portion 114 described above may also be provided on the disk body 115 .

[0060] Further, refer to Figure 5 and Figure 6 The connecting protrusion 212 can have a proximal end surface 2122 proximate to the disc body 115. The connecting protrusion 212 can have a third diameter D3, and the first shaft segment 211 can have a fourth diameter D4, where D3 ≥ D4. When D3 = D4, processing and manufacturing are facilitated, saving costs. When D3 > D4, the structural strength of the latching engagement portion 2121 is effectively enhanced, while the mounting contact area is effectively increased, further strengthening the connection stability between the output shaft 210 and the impeller assembly 10 and reducing noise or abnormal sounds generated during rotation.

[0061] In some embodiments, D3>D4, and the latching portion 2121 can be a protrusion or a groove. In this case, when the latching portion 2121 is a protrusion, the latching portion 2121 can be formed to protrude from the proximal end surface 2122. When the latching portion 2121 is a groove, the latching portion 2121 can be formed to be recessed from the proximal end surface 2122.

[0062] In some embodiments, in the radial direction, the relationship between the locking portion 2121 , the connecting protrusion 212 and the first shaft segment 211 may be such that the total length of the locking portion 2121 and the fourth diameter D4 is less than or equal to the third diameter D3 .

[0063] In some embodiments, D3 > D4, and the connecting protrusion 212 may further include multiple connecting portions 2123 around the first shaft segment 211. Each connecting portion 2123 may connect between two adjacent engaging portions 2121, and the multiple connecting portions 2123 may be formed on the same second circle 2124. The second circle 2124 may be concentric with the first shaft segment 211. It is understood that the diameter of the connecting portion 2123 may be greater than the diameter of the first shaft segment 211, forming a second annular portion 2125 between the connecting portion 2123 and the first shaft segment 211.

[0064] For example, the latch fitting portion 2121 and the second annular portion 2125 may both be grooves. In this case, the latch fitting portion 2121 and the second annular portion 2125 may be recessed from the proximal end surface 2122 .

[0065] For example, see Figure 5 , the latching mating portion 2121 and the second annular portion 2125 can both be protrusions. In this case, the latching mating portion 2121, the second annular portion 2125, and the connecting protrusion 212 can be an integrally formed structure, and the latching mating portion 2121 and the second annular portion 2125 can be formed by protruding from the end surface of the connecting protrusion 212 near the disk body 115. Of course, it is not ruled out that at least two of the latching mating portion 2121, the second annular portion 2125, and the connecting protrusion 212 can be split structures. When at least two of the latching mating portion 2121, the second annular portion 2125, and the connecting protrusion 212 are split structures, they can be connected into one piece by welding, gluing, or other connection methods.

[0066] For example, one of the latching portion 2121 and the second annular portion 2125 may be a protrusion, and the other may be a groove. In this case, the groove may be recessed from the proximal end surface 2122, and the protrusion may be protruding from the proximal end surface 2122. The protrusion may be integral with the connecting protrusion 212. Of course, the protrusion may also be a separate structure from the connecting protrusion 212, and connected to the connecting protrusion 212 by welding, gluing, or other connection methods.

[0067] In some embodiments, in the radial direction, the relationship between the latch fitting portion 2121, the second annular portion 2125 and the connecting protrusion 212 can be: the total length of the latch fitting portion 2121 and the diameter of the second circle 2124 where the second annular portion 2125 is located is less than or equal to the third diameter D3.

[0068] In some embodiments, D3>D4, and the latching portion 2121 may protrude radially outward from the outer edge of the connecting protrusion 212 .

[0069] In some embodiments, D3 = D4 , and the engaging portion 2121 may protrude radially outward from the outer edge of the connecting protrusion 212 .

[0070] It should be noted that any output shaft 210 in the above-mentioned various embodiments can be connected to any wheel disc 110 in the above-mentioned various embodiments.

[0071] In some embodiments, the proximal end surface 2122 may at least partially conform to the first end surface 111 , thereby effectively enhancing the stability of the connection between the impeller assembly 10 and the motor assembly 20 .

[0072] For example, the latch portion 114 can be configured as a protrusion protruding from the first end surface 111 away from the disc body 115. The latch engaging portion 2121 can be configured as a groove recessed from the proximal end surface 2122 away from the first shaft segment 211. The configuration of the latch portion 114 and the latch engaging portion 2121 as a protrusion and a groove ensures a secure connection between the latch portion 114 and the latch engaging portion 2121, while maintaining a simple structure and ease of processing.

[0073] For example, Figure 2 The latch portion 114 can be configured as a groove recessed from the first end surface 111 toward the disk body 115. The latch engaging portion 2121 can be configured as a bump protruding from the proximal end surface 2122 toward the first shaft segment 211. The bump and groove configurations of the latch portion 114 and the latch engaging portion 2121 ensure a secure connection between the latch portion 114 and the latch engaging portion 2121, while maintaining a simple structure and ease of processing.

[0074] In some embodiments, as Figure 1 The latch portion 114 can be recessed from the first end surface 111 toward the disk body 115. The latch engaging portion 2121 can be formed to protrude radially outward from the outer edge of the connecting protrusion 212. This ensures structural strength while saving costs. The latch portion 114 and the latch engaging portion 2121 are constructed as a bump and a groove, ensuring a secure connection between the latch portion 114 and the latch engaging portion 2121 while facilitating easy processing.

[0075] In some embodiments, the latch portion 114 can be formed by radially protruding outward from the outer edge of the connecting seat 116. The latch engaging portion 2121 can be formed by being recessed from the proximal end surface 2122 in a direction away from the first shaft segment 211. This ensures structural strength while saving costs. The latch portion 114 and the latch engaging portion 2121 are constructed as a protrusion and a groove, ensuring a secure connection between the latch portion 114 and the latch engaging portion 2121 while facilitating processing.

[0076] According to another aspect of the present invention, a range hood is provided. The range hood may include a housing (not shown) and the fan 1 described above. The fan 1 may be disposed within the housing. Since the fan 1 described above has the aforementioned beneficial effects, a range hood including the fan 1 also has the aforementioned beneficial effects, which will not be further elaborated here.

[0077] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0078] For ease of description, area-relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that area-relative terms include not only the orientation of the components as described in the figures, but also different orientations in use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0080] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0081] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan, characterized in that: The impeller assembly comprises an impeller assembly, a motor assembly and a locking assembly, wherein the impeller assembly comprises a wheel disc having a first end surface and a second end surface opposite to each other, and the motor assembly comprises an output shaft, wherein the output shaft passes through the wheel disc from the first end surface and has a first shaft section protruding from the second end surface; In which, the locking assembly has a locking member and a sliding limit member, the locking member is sleeved on the first shaft segment, the sliding limit member is sleeved outside the locking member, and is movable between a locking position and an unlocking position relative to the locking member; when the sliding limit member is in the locking position, the wheel disc is positioned on the output shaft through the locking member; when the sliding limit member is in the unlocking position, the output shaft is separable relative to the wheel disc.

2. The fan according to claim 1, characterized in that The locking member has a main body and a locking member, the main body is enclosed to form a accommodating cavity, and a through hole connected to the accommodating cavity is opened on the main body, the locking member is arranged in the through hole, and the first shaft segment is provided with a locking groove along the circumferential direction. When the sliding limit member is in the locking position, the locking member is engaged with the locking groove.

3. The fan according to claim 2, characterized in that There are a plurality of the positioning members and the through holes, and the positioning members are arranged in a one-to-one correspondence with the through holes. The positioning members and the through holes are circumferentially spaced apart on the main body.

4. The fan according to claim 2, characterized in that: The sliding limit member has an inner side surface, and a limiting portion protrudes on the inner side surface toward the main body; when the sliding limit member is in the locking position, the locking member is limited by the limiting portion to a locking position engaged with the locking groove; when the sliding limit member is in the unlocking position, the limiting portion releases the restriction on the locking member.

5. The fan according to claim 1, characterized in that An elastic member is provided between the sliding limit member and the locking member, and the sliding limit member is located in the locking position due to the elastic restoring force of the elastic member.

6. The fan according to claim 1, characterized in that The impeller assembly has a plurality of blades, which are connected to the impeller disc in an annular shape to form a blade ring. The impeller disc is provided with a through hole extending from the first end surface to the second end surface, wherein the center of the through hole is concentric with the center of the blade ring, and the first shaft segment is passed through the through hole. The motor assembly also has a body, the first shaft segment is connected with a connecting protrusion and a second shaft segment in sequence, the second shaft segment is connected to the body, a plurality of latching parts are arranged around the through hole on the wheel disc, a plurality of latching fitting parts are arranged on the connecting protrusion, and the plurality of latching fitting parts are latched with the plurality of latching parts in a one-to-one correspondence.

7. The fan according to claim 6, characterized in that The wheel disc includes a disc body and a connecting seat arranged on one side of the disc body, the through hole passes through the disc body and the connecting seat, and a plurality of the latching parts are arranged on the connecting seat.

8. The fan according to claim 7, characterized in that: The connecting seat has the first end face away from the disk body, the connecting protrusion has a proximal end face close to the disk body, the proximal end face is at least partially in contact with the first end face, the latch portion is configured as a protrusion protruding from the first end face in the direction away from the disk body, and the latch fitting portion is configured as a groove recessed from the proximal end face in the direction away from the first axis segment; or the latch portion is configured as a groove recessed from the first end face in the direction of the disk body, and the latch fitting portion is configured as a protrusion protruding from the proximal end face in the direction of the first axis segment.

9. The fan according to claim 7, characterized in that: The connecting seat has the first end surface away from the disk body, the latch portion is recessed from the first end surface toward the disk body, and the latch fitting portion is formed by protruding radially outward from the outer edge of the connecting protrusion; or the latch portion is formed by protruding radially outward from the outer edge of the connecting seat, the connecting protrusion has a proximal surface close to the disk body, and the latch fitting portion is recessed from the proximal surface toward away from the first axis segment.

10. A range hood, characterized in that: The invention comprises a box body and a fan as claimed in any one of claims 1 to 9, wherein the fan is arranged inside the box body.

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