Fan and range hood

Abstract

The fan comprises an impeller assembly, a motor assembly, a connecting piece and a locking assembly, and a wheel disc of the impeller assembly is provided with a first end face and a second end face which are oppositely arranged; the motor assembly has an output shaft; the shaft part of the connecting piece is provided with a first shaft section and a second shaft section, the first shaft section and the second shaft section are adjacent to the two end faces of the shaft part respectively, the first shaft section penetrates through the wheel disc from the first end face and protrudes out of the second end face, and the second shaft section is connected with the output shaft through the coupler; 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 positioned on the first shaft section through the locking piece; when the sliding limiting piece is located at the unlocking position, the first shaft section can be separated relative to the wheel disc. According to the utility model, the maintenance cost is reduced, and the wheel disc and the output shaft can be quickly assembled or disassembled.

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.

[0004] In addition, the part of the motor shaft close to the wheel disc is susceptible to oil corrosion and needs to be cleaned or replaced regularly. The existing motor shaft is usually an integrated structure and needs to be cleaned or replaced as a whole, which has high maintenance costs and reduces the user experience. Utility Model Content

[0005] 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.

[0006] The fan includes an impeller assembly, a motor assembly, a connecting piece and a locking assembly. The impeller assembly has a wheel disc, and 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 connecting piece has a shaft portion, and the shaft portion has a first shaft section and a second shaft section, the first shaft section and the second shaft section are respectively adjacent to the two end faces of the shaft portion, the first shaft section passes through the wheel disc from the first end face and protrudes from the second end face, and the second shaft section is connected to the output shaft through a coupling; the locking assembly has a locking piece and a sliding limit piece, the locking piece is sleeved on the first shaft section, the sliding limit piece is sleeved outside the locking piece, and can be moved between a locked position and an unlocked position relative to the locking piece; when the sliding limit piece is in the locked position, the wheel disc is positioned on the first shaft section through the locking piece; when the sliding limit piece is in the unlocked position, the first shaft section is separable relative to the wheel disc.

[0007] The fan of the present invention, on the one hand, realizes the connection between the impeller and the output shaft through the provision of the connecting piece, and when the connecting piece is corroded by oil, only the connecting piece can be disassembled and assembled, which is convenient for cleaning or replacement and reduces maintenance costs; on the other hand, the sliding limit piece moves between the locking position and the unlocking position relative to the locking piece, thereby realizing rapid installation or disassembly of the impeller and the output shaft, improving the efficiency of installation or disassembly and ensuring the firmness of the connection. At the same time, the sliding limit piece is sleeved outside the locking piece to reduce the corrosion of the locking piece by oil, thereby avoiding problems such as difficulty in installation or disassembly or even inability to install in place due to oil.

[0008] For example, a connecting protrusion is provided between the first and second shaft segments. The connecting protrusion protrudes radially outward from the outer edge of the shaft portion and has a contact end surface that mates with the impeller along the length of the shaft portion. This arrangement allows the connecting protrusion to form surface contact with the impeller via the contact end surface, thereby enhancing the connection stability between the impeller and the output shaft (i.e., enhancing the connection stability between the impeller assembly and the motor assembly), and avoiding problems such as loud noise and abnormal sounds generated when the impeller assembly has a large diameter or rotates at a high speed.

[0009] Exemplarily, the impeller assembly has a plurality of blades, which are connected to the wheel disc in an annular shape to form a blade ring. The wheel disc is provided with a through hole extending from the first end face to the second end face. The center of the through hole and the center of the blade ring meet the concentric condition. The first shaft segment is provided through the through hole. The wheel disc is provided with a plurality of latching parts around the through hole. The connecting protrusion is provided with a plurality of latching fitting parts. The plurality of latching fitting parts are respectively corresponding to and latched with the plurality of latching parts. In this way, the first shaft segment is provided through the through hole and locked by the locking assembly to realize the connection between the impeller assembly and the motor assembly through the connecting piece. The plurality of latching fitting parts are respectively corresponding to and latched with the plurality of latching parts to enhance the connection stability between the impeller assembly and the connecting piece, avoid the problems of large noise and abnormal sound when the diameter of the blade ring is large or the rotation speed of the blade ring is fast, and improve the service life of the impeller assembly.

[0010] For example, a roulette wheel includes a wheel body and a connecting base disposed on one side of the wheel body. A hole is provided through the wheel body and the connecting base, and a plurality of latches are provided on the connecting base. This arrangement connects the connector to the wheel body via the connecting base, making it easy to clean or replace the connecting base, reducing maintenance costs. Furthermore, the presence of multiple latches effectively distributes the applied force across each latch, improving the user experience.

[0011] For example, the first end face is located on the connecting seat and away from the disk body, the contact end face is in contact with the first end face, the latch portion is configured as a protrusion 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 contact 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 protrusion protruding from the contact end face in a direction toward the first shaft segment. In this arrangement, the contact end face is in contact with the first end face, effectively enhancing the stability of the connection between the impeller assembly and the motor assembly via the connector. The latch portion and the latch-fitting portion are configured as a protrusion 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.

[0012] For example, a first flattened surface is formed on the second shaft segment, and a second flattened surface is provided on the output shaft. The first flattened surface and the second flattened surface mate to form a mating shaft segment. This arrangement effectively transmits torque from the output shaft to the second shaft segment, while maintaining a simple structure and being easy to manufacture.

[0013] For example, the coupling has a first length L1, and the mating shaft segment has a second length L2, where L1 ≥ L2. This arrangement effectively enhances the secure connection between the coupling and the mating shaft segment, preventing the output shaft and the second shaft segment from dislodging from the coupling, ensuring the safety of the wind turbine during operation and improving the user experience.

[0014] For example, the coupling has a first connecting end face and a second connecting end face, the first connecting end face and the second connecting end face being disposed opposite each other. A connecting through-hole extends through the coupling from the first connecting end face toward the second connecting end face, and the mating shaft segment is disposed within the connecting through-hole. This arrangement ensures that the second shaft segment is coaxial with the output shaft, effectively transmitting torque output by the output shaft to the second shaft segment and ensuring a secure connection between the second shaft segment and the output shaft. Furthermore, the structure is simple and easy to manufacture.

[0015] 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.

[0016] 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.

[0017] 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. Thus, 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 retaining 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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,

[0023] Figure 1 A cross-sectional view of a fan according to an exemplary embodiment of the present invention;

[0024] Figure 2 A cross-sectional view of a fan according to another exemplary embodiment of the present invention;

[0025] Figure 3 for Figure 2 Exploded view of the impeller assembly in Figure 1;

[0026] Figure 4 for Figure 3 A three-dimensional diagram of the connecting seat in FIG.

[0027] Figure 5 for Figure 2 The main view of the connector in

[0028] Figure 6 for Figure 2 A perspective view of the connecting member in FIG.

[0029] Figure 7 for Figure 2 The main view of the motor assembly in FIG;

[0030] Figure 8 for Figure 2 The main view of the coupling in FIG;

[0031] Figure 9 for Figure 2 Left side view of the coupling in FIG;

[0032] Figure 10 for Figure 2 A bottom view of the locking member in FIG;

[0033] Figure 11 for Figure 2 A cross-sectional view of the locking member in FIG.

[0034] The above drawings include the following reference numerals:

[0035] 1. Fan; 10. Impeller assembly; 100. Blade ring; 110. Wheel disc; 111. First end face; 112. Second end face; 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. Chassis; 140. Top disc; 20. Motor assembly; 210. Output shaft; 211. Second flattened surface; 30. Connector; 310. Shaft; 311. First shaft section; 3111. Clamping slot; 3111a. First side wall; 3111b. Second side wall; 312. Second shaft section; 3121. First flattened surface; 313. Connecting protrusion; 3131. Contact end face; 3132. Clamping portion Latch fitting portion; 3133, connecting portion; 3134, second circle; 3135, second annular portion; 40, coupling; 410, first connecting end face; 420, second connecting end face; 430, connecting through hole; 440, clamp shell; 450, gap; 460, fastener; 470, first fitting surface; 480, second fitting surface; 50, fitting shaft section; 60, locking assembly; 610, locking member; 611, main body; 6111, through hole; 612, locking member; 613, accommodating cavity; 614, outer side surface; 620, sliding limit member; 621, inner side surface; 6211, limit portion; 630, elastic member; 640, sliding cavity; D1, first diameter; D2, aperture; D3, third diameter; D4, fourth diameter. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] See also Figure 1 、 Figure 2 and Figure 5The fan 1 may include an impeller assembly 10, a motor assembly 20, a connector 30, and a locking assembly 60. The impeller assembly 10 may include a wheel disc 110, and the wheel disc 110 may include a first end face 111 and a second end face 112 arranged opposite to each other. The motor assembly 20 may include an output shaft 210. The connector 30 may include a shaft portion 310. The shaft portion 310 may include a first shaft segment 311 and a second shaft segment 312. The first shaft segment 311 and the second shaft segment 312 may be adjacent to both end faces of the shaft portion 310, respectively. The first shaft segment 311 may pass through the wheel disc 110 from the first end face 111 and protrude from the second end face 112. The second shaft segment 312 may be connected to the output shaft 210 via a coupling 40. The locking assembly 60 may include a locking member 610 and a sliding limit member 620. The locking member 610 may be sleeved on the first shaft segment 311. The sliding stopper 620 can be disposed outside the locking member 610 and can move relative to the locking member 610 between a locked position and an unlocked position. When the sliding stopper 620 is in the locked position, the wheel disc 110 can be positioned on the first shaft segment 311 by the locking member 610. When the sliding stopper 620 is in the unlocked position, the first shaft segment 311 can be separated from the wheel disc 110.

[0040] The fan 1 of the present invention, on the one hand, realizes the connection between the wheel 110 and the output shaft 210 through the setting of the connecting member 30, and when the connecting member 30 is corroded by oil, only the connecting member 30 can be disassembled and assembled, which is convenient for cleaning or replacement and reduces maintenance costs; on the other hand, the sliding limit member 620 moves between the locking position and the unlocking position relative to the locking member 610, so that the wheel 110 and the output shaft 210 can be quickly installed or disassembled, the efficiency of installation or disassembly is improved, and the connection firmness is ensured. At the same time, the sliding limit member 620 is arranged outside the locking member 610 to reduce the corrosion of the locking member 610 by oil, thereby avoiding the problems of difficult installation or disassembly or even inability to install due to oil.

[0041] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 A connecting protrusion 313 may be provided between the first shaft segment 311 and the second shaft segment 312. The connecting protrusion 313 may protrude radially outward from the outer edge of the shaft portion 310, and along the length direction of the shaft portion 310, the connecting protrusion 313 may have a contact end surface 3131 that abuts against the impeller 110. The connecting protrusion 313 forms surface contact with the impeller 110 via the contact end surface 3131, thereby enhancing the connection stability between the impeller 110 and the output shaft 210 (i.e., enhancing the connection stability between the impeller assembly 10 and the motor assembly 20), and avoiding problems such as loud noise and abnormal sounds generated when the impeller assembly 10 has a large diameter or a high rotational speed.

[0042] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 The impeller assembly 10 may have a plurality of blades 120. The plurality of blades 120 may be connected to the wheel disc 110 in a ring shape to form a blade ring 100. The wheel disc 110 may be provided with a through hole 113 extending from the first end face 111 to the second end face 112. The center of the through hole 113 may be concentric with the center of the blade ring 100. The first shaft segment 311 may be passed through the through hole 113. The wheel disc 110 may be provided with a plurality of latching portions 114 around the through hole 113. The connecting protrusion 313 may be provided with a plurality of latching fitting portions 3132. The plurality of latching fitting portions 3132 may be latched in a one-to-one correspondence with the plurality of latching portions 114. The first shaft section 311 is passed through the penetration hole 113 and locked by the locking assembly 60 to realize the connection between the impeller assembly 10 and the motor assembly 20 through the connecting member 30, and the multiple latching fitting parts 3132 are respectively latched with the multiple latching parts 114 in a one-to-one correspondence to enhance the connection stability between the impeller assembly 10 and the connecting member 30, avoiding problems such as 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.

[0043] 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 3132 can be evenly spaced along the circumferential direction of the connecting protrusion 313. 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 split 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 3132 can also be 3, 6, 8, etc. There are multiple latch parts 114 and latch fitting parts 3132 that can disperse the force, preventing a single latch part 114 or latch fitting part 3132 from being subjected to excessive force and being easily damaged, and multiple latch parts 114 are evenly spaced along the circumferential direction of the wheel disc 110, and multiple latch fitting parts 3132 can be evenly spaced along the circumferential direction of the connecting protrusion 313, which can effectively disperse the force evenly on each latch part 114 and latch fitting part 3132, further avoiding a single latch part 114 or latch fitting part 3132 from being subjected to excessive force and being easily damaged.

[0044] 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.

[0045] 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.

[0046] See also Figures 1 to 6 The roulette wheel 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 penetrate the disc body 115 and the connecting seat 116. A plurality of latching portions 114 may be disposed on the connecting seat 116. The connecting member 30 and the disc body 115 are connected via the connecting seat 116, making it easy to clean or replace the connecting seat 116, thereby reducing maintenance costs. Furthermore, the presence of multiple latching portions 114 effectively disperses the applied force across each latching portion 114, thereby improving the user experience.

[0047] In some embodiments, again in conjunction with reference to Figures 1 to 6 The connection base 116 may further include multiple arcuate portions 1161 around the through-hole 113. Each arcuate portion 1161 may be connected between two adjacent latching portions 114, and the multiple 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 latching portion 114 and increases the mounting contact area of the latching portion 114, thereby further strengthening the connection stability between the impeller assembly 10 and the connector 30.

[0048] Furthermore, 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, it is easy to process and manufacture, saving costs. When D1 > D2, the structural strength of the latch portion 114 is effectively enhanced, while the installation contact area is effectively increased, further strengthening the connection stability between the impeller assembly 10 and the connector 30, and reducing the noise or abnormal sound 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.

[0049] See also Figures 1 to 4 The first end surface 111 is located on the connecting seat 116 and away from the disk body 115 .

[0050] In some embodiments, in conjunction with Figure 2 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 toward the disk body 115.

[0051] 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 in a direction away from the disk body 115. 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.

[0052] 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 first end surface 111 toward the disk body 115, and the protrusion may be formed as a protrusion from the first end surface 111 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, connected to the connecting base 116 by welding, gluing, or other connection methods.

[0053] 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 .

[0054] 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 first end surface 111 toward 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 away from the disk body 115. 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.

[0055] 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 .

[0056] In some embodiments, the latch portion 114 may directly protrude radially outward from the outer edge of the connecting seat 116 .

[0057] In some embodiments, the latch portion 114 described above may also be provided on the disk body 115 .

[0058] See also Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The connecting protrusion 313 may have a third diameter D3. The first shaft segment 311 may have a fourth diameter D4.

[0059] In some embodiments, D3 > D4, and the latching portion 3132 can be a protrusion or a groove. In this case, if the latching portion 3132 is a protrusion, it can protrude from the contact end surface 3131 toward the first shaft segment 311. If the latching portion 3132 is a groove, it can be recessed from the contact end surface 3131 away from the first shaft segment 311.

[0060] In some embodiments, in the radial direction, the relationship between the locking portion 3132 , the connecting protrusion 313 and the first shaft segment 311 may be such that the total length of the locking portion 3132 and the fourth diameter D4 is less than or equal to the third diameter D3 .

[0061] In some embodiments, D3 > D4, and the connecting protrusion 313 may be provided with multiple connecting portions 3133 around the first shaft segment 311. Each connecting portion 3133 may be connected between two adjacent engaging portions 3132, and the multiple connecting portions 3133 may be formed on the same second circle 3134. The second circle 3134 may be concentric with the second shaft segment 312. It is understood that the diameter of the connecting portion 3133 may be greater than the diameter of the first shaft segment 311, forming a second annular portion 3135 between the connecting portion 3133 and the first shaft segment 311.

[0062] For example, the latch fitting portion 3132 and the second annular portion 3135 may both be grooves. In this case, the latch fitting portion 3132 and the second annular portion 3135 may be recessed from the contact end surface 3131 in a direction away from the first shaft segment 311 .

[0063] For example, the latching portion 3132 and the second annular portion 3135 can both be protrusions. In this case, the latching portion 3132, the second annular portion 3135, and the connecting protrusion 313 can be an integrally formed structure, with the latching portion 3132 and the second annular portion 3135 protruding from the contact end surface 3131 toward the first shaft segment 311. Of course, it is not ruled out that at least two of the latching portion 3132, the second annular portion 3135, and the connecting protrusion 313 can be separate structures. If at least two of the latching portion 3132, the second annular portion 3135, and the connecting protrusion 313 are separate structures, they can be connected into one piece by welding, gluing, or other connection methods.

[0064] For example, one of the latching portion 3132 and the second annular portion 3135 may be a protrusion, and the other may be a groove. In this case, the groove may be formed as a depression from the contact end surface 3131 away from the first shaft segment 311, and the protrusion may be formed as a protrusion from the contact end surface 3131 toward the first shaft segment 311. The protrusion may be integral with the connecting protrusion 313. Alternatively, the protrusion may be separate from the connecting protrusion 313 and integrally connected to the connecting protrusion 313 via welding, gluing, or other methods.

[0065] In some embodiments, in the radial direction, the relationship between the latching fitting portion 3132, the second annular portion 3135 and the connecting protrusion 313 can be: the total length of the latching fitting portion 3132 and the diameter of the second circle 3134 where the second annular portion 3135 is located is less than or equal to the third diameter D3.

[0066] In some embodiments, as Figure 1As shown, the latching portion 3132 can directly protrude radially outward from the outer edge of the connecting protrusion 313. The latching portion 3132 and the connecting protrusion 313 are integrally formed. Of course, the latching portion 3132 and the connecting protrusion 313 can also be separate structures. The latching portion 3132 and the connecting protrusion 313 can be connected to form a single body by welding, gluing, or other methods.

[0067] In some embodiments, when D3 = D4 , the connecting member 30 may not have the connecting protrusion 313 , and the locking engaging portion 3132 directly protrudes radially outward from the outer edge of the shaft portion 310 .

[0068] It should be noted that the output shaft 210 can be connected to any one of the wheel discs 110 in the above-mentioned embodiments through any one of the connecting members 30 in the above-mentioned embodiments.

[0069] In some embodiments, when the output shaft 210 is connected to the impeller 110 via the connector 30, the contact end surface 3131 can be aligned with the first end surface 111. This effectively enhances the stability of the connection between the impeller assembly 10 and the motor assembly 20 via the connector 30.

[0070] For example, the latch portion 114 can be configured as a protrusion protruding from the first end surface 111 in a direction away from the disk body 115, while the latch engaging portion 3132 can be configured as a groove recessed from the contact end surface 3131 in a direction away from the first shaft segment 311. In this manner, the latch portion 114 and the latch engaging portion 3132 are configured as a protrusion and a groove, ensuring a secure connection between the latch portion 114 and the latch engaging portion 3132 while maintaining a simple structure and ease of processing.

[0071] For example, the latch portion 114 can be configured as a groove recessed from the first end surface 111 toward the disk body 115, and the latch engaging portion 3132 can be configured as a bump protruding from the contact end surface 3131 toward the first shaft segment 311. Thus, the latch portion 114 and the latch engaging portion 3132 are configured as a bump and a groove, ensuring a secure connection between the latch portion 114 and the latch engaging portion 3132 while maintaining a simple structure and ease of processing.

[0072] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7, a first milled flat surface 3121 may be formed on the second shaft segment 312. A second milled flat surface 211 may be provided on the output shaft 210. The first milled flat surface 3121 and the second milled flat surface 211 may be fitted together to form a mating shaft segment 50. In this way, the torque output by the output shaft 210 can be effectively transmitted to the second shaft segment 312, and the structure is simple and easy to process. Specifically, the first milled flat surface 3121 may be a mating surface that matches the output shaft 210. The second milled flat surface 211 may be a mating surface that matches the second shaft segment 312. The first milled flat surface 3121 may be in an "L" shape, and the second milled flat surface 211 may be in an inverted "L" shape that matches the first milled flat surface 3121. Of course, the first milled flat surface 3121 and the second milled flat surface 211 can also have other shapes. For example, the first milled flat surface 3121 can be in a concave shape, and the second milled flat surface 211 can be in a convex shape that matches the first milled flat surface 3121.

[0073] See also Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 and Figure 9 The coupling 40 can have a first length L1. The mating shaft segment 50 can have a second length L2, where L1 ≥ L2. When L1 = L2, this saves costs. When L1 > L2, the connection between the coupling 40 and the mating shaft segment 50 is effectively strengthened, preventing the output shaft 210 and the second shaft segment 312 from being dislodged from the coupling 40, ensuring the safety of the fan 1 during operation and improving the user experience.

[0074] Again, refer to Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 and Figure 9 The coupling 40 may have a first connecting end face 410 and a second connecting end face 420. The first connecting end face 410 and the second connecting end face 420 may be arranged opposite to each other. The coupling 40 may have a connecting through-hole 430 extending from the first connecting end face 410 toward the second connecting end face 420. The mating shaft segment 50 may be inserted into the connecting through-hole 430. In this way, the second shaft segment 312 is coaxially arranged with the output shaft 210, and the torque output by the output shaft 210 can be effectively transmitted to the second shaft segment 312. The connection between the second shaft segment 312 and the output shaft 210 is also firmly secured. At the same time, the structure is simple and easy to process.

[0075] Specifically, the coupling 40 may include a clamping shell 440 and a fastener 460. A gap 450 is axially provided on the clamping shell 440 to form a first mating surface 470 and a second mating surface 480. The fastener 460 is disposed on the clamping shell 440 and passes through the gap 450. Tightening the fastener 460 may bring the first mating surface 470 and the second mating surface 480 closer to each other, thereby achieving clamping of the clamping shell 440 on the mating shaft segment 50, and then transmitting torque by relying on the friction between the inner surface of the clamping shell 440 and the outer surface of the mating shaft segment 50. Loosening the fastener 460 may move the first mating surface 470 and the second mating surface 480 away from each other, thereby achieving detachment of the mating shaft segment 50 from the clamping shell 440. The fastener 460 may be a bolt or a screw, etc.

[0076] In some embodiments, the coupling 40 in the present invention may include but is not limited to a flange coupling, a clamp coupling, a gear coupling, a safety coupling or a diaphragm coupling.

[0077] See also Figure 1 、 Figure 2 、 Figure 7 、 Figure 10 and Figure 11 The locking member 610 may have a main body 611 and a locking member 612. The main body 611 may enclose a receiving cavity 613, and a through hole 6111 communicating with the receiving cavity 613 may be provided on the main body 611. The locking member 612 may be arranged in the through hole 6111. The first shaft segment 311 may be provided with a locking groove 3111 along the circumferential direction. The locking groove 3111 may be formed by the outer wall of the first shaft segment 311 being recessed toward the central axis of the first shaft segment 311. When the sliding limit member 620 is in the locking position, the locking member 612 may be engaged with the locking groove 3111. The positioning of the wheel disc 110 on the output shaft 210 is achieved by engaging the locking member 612 with the locking groove 3111, thereby ensuring the firmness of the connection between the wheel disc 110 and the output shaft 210 while being simple in structure and easy to process. Preferably, the locking member 612 can be spherical in shape, which makes it easier to engage or separate the locking member 612 from the locking slot 3111. Of course, the locking member 612 can also be ellipsoidal in shape. It is understandable that the shape of the through hole 6111 is similar to that of the locking member 612, so that the locking member 612 can be easily positioned within the through hole 6111.

[0078] Furthermore, the slot 3111 includes a first sidewall 3111a and a second sidewall 3111b, with the first sidewall 3111a and the second sidewall 3111b being arranged opposite each other. The first sidewall 3111a can be inclined from the bottom wall of the slot to the outer wall surface of the first shaft segment 311 toward the central axis relative to the first shaft segment 311 and away from the second sidewall 3111b. The second sidewall 3111b can be inclined from the bottom wall of the slot to the outer wall surface of the first shaft segment 311 toward the central axis relative to the first shaft segment 311 and away from the first sidewall 3111a. In this way, when the retaining member 612 is engaged or separated from the slot 3111, the first sidewall 3111a or the second sidewall 3111b can guide the retaining member 612, thereby facilitating the engagement or separation of the retaining member 612 from the slot 3111.

[0079] Again, refer to Figure 1 、 Figure 2 、 Figure 7 、 Figure 10 and Figure 11 There can be multiple retaining members 612 and through-holes 6111. Multiple retaining members 612 and multiple through-holes 6111 can be provided in a one-to-one correspondence, and the multiple retaining members 612 and multiple through-holes 6111 can be circumferentially spaced apart on the main body 611. This improves the secure connection between the wheel disc 110 and the output shaft 210, and the presence of multiple retaining members 612 can disperse the applied force. Furthermore, the circumferential spacing of the multiple retaining members 612 on the main body 611 can more effectively and evenly distribute the applied force across each retaining member 612.

[0080] It should be noted that, depending on the number of the retaining members 612 and the through holes 6111 , the retaining groove 3111 can be configured as an annular retaining groove 3111 or an arc-segment retaining groove 3111 in the axial direction of the first shaft segment 311 .

[0081] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 10 and Figure 11The sliding limit member 620 may have an inner side surface 621. A limiting portion 6211 may protrude from the inner side surface 621 toward the main body 611. When the sliding limit member 620 is in the locked position, the locking member 612 may be limited by the limiting portion 6211 to a locking position in which it is locked with the locking groove 3111. It can be understood that the locking position may be a position in which the locking member 612 is at least partially placed in the locking groove 3111 and abuts against the bottom wall, the first side wall 3111a, and the second side wall 3111b of the locking groove 3111. When the sliding limit member 620 is in the unlocked position, the limiting portion 6211 releases the restriction on the locking member 612. The limiting portion 6211 is disposed on the inner side 621 of the sliding limiting member 620 to reduce corrosion by oil stains. When the sliding limiting member 620 is in the locked position, the limiting portion 6211 limits the locking member 612 to a locked position with the locking groove 3111, thereby ensuring the secure connection between the wheel disc 110 and the output shaft 210. When the sliding limiting member 620 is in the unlocked position, the limiting portion 6211 releases the restriction on the locking member 612, simplifying operation and improving the user experience. Specifically, the limiting portion 6211 and the sliding limiting member 620 can be an integrated structure. Of course, the limiting portion 6211 and the sliding limiting member 620 can also be a separate structure, for example, connected by adhesive connection, screw fixing, or other connection methods.

[0082] Preferably, when the sliding stopper 620 is in the locked position, the limiting portion 6211 can completely close the through-hole 6111 near the end of the sliding stopper 620, and the limiting portion 6211 at least partially abuts the locking member 612, thereby restricting the locking member 612 to the locked position with the locking groove 3111. In this way, the secure connection between the locking member 612 and the locking groove 3111 is ensured, thereby ensuring the secure connection between the wheel disc 110 and the output shaft 210, and preventing the locking member 612 from separating from the locking groove 3111. Of course, it is not ruled out that the limiting portion 6211 can partially close the through-hole 6111 near the end of the sliding stopper 620, and the limiting portion 6211 at least partially abuts the locking member 612.

[0083] See also Figure 1 、 Figure 2 、 Figure 10 and Figure 11An elastic member 630 may be provided between the sliding limit member 620 and the locking member 610. The sliding limit member 620 can be positioned in the locked position by the elastic restoring force of the elastic member 630. Thus, the sliding limit member 620 is moved between the locked and unlocked positions by the elastic member 630, resulting in a simple structure and cost savings. Furthermore, the elastic restoring force of the elastic member 630 keeps the sliding limit member 620 in the locked position, reducing the number of operating steps and improving the user experience. Specifically, the elastic member 630 may be a spring, which is easy to manufacture and process, saves costs, and is suitable for use in scenarios where space is limited.

[0084] Furthermore, a sliding cavity 640 may be defined between the inner side surface 621 of the sliding stopper 620 and the outer side surface 614 of the locking member 610, and the elastic member 630 may be disposed in the sliding cavity 640. When the locking assembly 60 is separated from the first shaft segment 311, the retaining member 612 may be at least partially disposed in the sliding cavity 640. Specifically, the sliding cavity 640 may be formed by the inner side surface 621 of the sliding stopper 620, the outer side surface 614 of the locking member 610, and the limiting portion 6211. Axially, the sliding cavity 640 may be located above the limiting portion 6211.

[0085] The following describes in detail the positioning of the wheel disc 110 relative to the connecting member 30 by the locking assembly 60 and the separation of the wheel disc 110 from the connecting member 30:

[0086] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 10 and Figure 11 After the first shaft segment 311 of the connector 30 passes through the wheel disc 110 from the first end surface 111 and protrudes from the second end surface 112, the locking member 610 is sleeved onto the first shaft segment 311. The sliding stopper 620 is slid to the locked position by the elastic restoring force of the elastic member 630 (or manually). At this point, as the stopper 6211 slides toward the locked position, it pushes the retaining member 612, which is partially located within the sliding cavity 640, into the retaining groove 3111. The second sidewall 3111b of the retaining groove 3111 guides the retaining member 612 until the stopper 6211 closes the through-hole 6111 near the end of the sliding stopper 620, separating the through-hole 6111 from the sliding cavity 640 and engaging the retaining member 612 with the retaining groove 3111. In this manner, the wheel disc 110 is positioned relative to the output shaft 210 by the locking assembly 60.

[0087] The sliding limit member 620 is slid to the unlocking position. At this time, the limiting portion 6211 opens the through hole 6111 close to one end of the sliding limit member 620. The through hole 6111 is connected to the sliding cavity 640, and the limiting portion 6211 releases the restriction on the locking member 612. Then the locking assembly 60 is pulled out relative to the first shaft section 311. During the pulling out process, the first side wall 3111aa of the slot 3111 guides the locking member 612, so that the locking member 612 is separated from the slot 3111, and part of the locking member 612 enters the sliding cavity 640. Finally, the separation of the wheel 110 relative to the connecting member 30 is completed.

[0088] According to another aspect of the present invention, a range hood is provided. The range hood may include a housing (not shown) and the aforementioned fan 1, disposed within the housing. Since the aforementioned fan 1 has the aforementioned beneficial effects, a range hood including the aforementioned fan 1 also has the aforementioned beneficial effects, which will not be further elaborated herein.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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: include: An impeller assembly, the impeller assembly comprising a wheel disc, the wheel disc having a first end surface and a second end surface disposed opposite to each other; a motor assembly having an output shaft; a connecting member, the connecting member having a shaft portion, the shaft portion having a first shaft segment and a second shaft segment, the first shaft segment and the second shaft segment being adjacent to both end surfaces of the shaft portion, respectively, the first shaft segment passing through the wheel disc from the first end surface and protruding from the second end surface, the second shaft segment being connected to the output shaft via a coupling; and A locking assembly, wherein 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 first shaft segment through the locking member; when the sliding limit member is in the unlocking position, the first shaft segment is separable relative to the wheel disc.

2. The fan according to claim 1, characterized in that A connecting protrusion is provided between the first shaft segment and the second shaft segment. The connecting protrusion protrudes radially outward from the outer edge of the shaft portion, and in the length direction of the shaft portion, the connecting protrusion has a contact end surface that fits with the wheel disc.

3. The fan according to claim 2, characterized in that The impeller assembly has multiple blades, and the multiple blades are connected to the wheel disc in a ring shape to form a blade ring. The wheel disc is provided with a through hole extending from the first end face to the second end face, and the center of the through hole and the center of the blade ring meet the concentric condition. The first shaft segment is passed through the through hole, and the wheel disc is provided with multiple latching parts around the through hole, and the connecting protrusion is provided with multiple latching fitting parts, and the multiple latching fitting parts are respectively corresponding to and latched with the multiple latching parts.

4. The fan according to claim 3, 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.

5. The fan according to claim 4, characterized in that: The first end face is located on the connecting seat and away from the disk body, the contact end face is 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 contact 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 contact end face in the direction of the first axis segment.

6. The fan according to claim 1, characterized in that A first milled flat surface is formed on the second shaft segment, and a second milled flat surface is provided on the output shaft. The first milled flat surface and the second milled flat surface are fitted together to form a matching shaft segment.

7. The fan according to claim 6, characterized in that The coupling has a first length L1, and the mating shaft segment has a second length L2, where L1 ≥ L2.

8. The fan according to claim 7, characterized in that: The coupling has a first connecting end face and a second connecting end face, the first connecting end face is arranged opposite to the second connecting end face, the coupling has a connecting through hole extending from the first connecting end face toward the second connecting end face, and the mating shaft segment is inserted into the connecting through hole.

9. 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.

10. The fan according to claim 9, 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.

11. The fan according to claim 9, characterized in that The sliding limiter has an inner side surface, and a limiting portion protrudes on the inner side surface toward the main body. When the sliding limiter 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 limiter is in the unlocking position, the limiting portion releases the restriction on the locking member.

12. 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.

13. A range hood, characterized in that: The invention comprises a box body and a fan as described in any one of claims 1 to 12, wherein the fan is arranged inside the box body.

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