A fan with fan blades that are easy to install

Abstract

The utility model discloses a fan of convenient installation fan blade, it includes: fan main body, drive motor and fan blade. Drive motor is installed in fan main body, and drive motor is provided with motor shaft, and the periphery of the end of motor shaft is provided with flat cutting default part, and the screw slot is set up at flat cutting default part. Fan blade includes central part and a plurality of blade parts, and blade part is connected to the four -around of central part, and central part is provided with sleeve part, and sleeve part is provided with sleeve joint hole, and sleeve joint hole and the end shape of motor shaft are adapted, and sleeve part is set up in the end of motor shaft through sleeve joint hole, and the direction of fan blade air supply is defined as front, and sleeve part is located at the front side of blade part, and the periphery of sleeve part is provided with screw hole that is through to sleeve joint hole. Fixed screw is connected in screw hole through screw thread, and the end of fixed screw is clamped and set up in screw slot. The fan of above -mentioned structure, and the structure of fan blade and motor shaft connection is simple, and is convenient to assemble and disassemble.

Description

Technical Field

[0001] This utility model relates to electrical appliances, and in particular to a fan that is easy to install fan blades. Background Technology

[0002] In existing fans, the fan blades are generally directly fixed to the motor shaft of the drive motor. To facilitate subsequent cleaning, the fan blades are usually detachably connected to the motor shaft. However, the existing connection structure between the fan blades and the motor shaft is relatively complex and not convenient to install and remove, which affects the user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fan with easily installed blades, featuring a simple connection between the blades and the motor shaft, making assembly and disassembly convenient.

[0004] A fan for easy installation of fan blades according to an embodiment of the present invention includes: a fan body; a drive motor mounted on the fan body, the drive motor having a motor shaft, a flat-cut portion having a screw groove on the circumferential surface of the end of the motor shaft; fan blades including a central portion and multiple blade portions, the blade portions being connected to the periphery of the central portion, the central portion having a sleeve portion having a socket hole, the socket hole being adapted to the shape of the end of the motor shaft, the sleeve portion being fitted onto the end of the motor shaft through the socket hole, defining the airflow direction of the fan blades as forward, the sleeve portion being located in front of the blade portions, and a threaded hole extending to the socket hole having a threaded connection on the circumferential surface of the sleeve portion; and a fixing screw threaded into the threaded hole, the end of the fixing screw being engaged in the screw groove.

[0005] A fan with convenient blade installation according to an embodiment of the present invention has at least the following advantages: The fan, by providing a sleeve portion with a fitting hole adapted to the end of the motor shaft, and a flat-cut portion on the circumferential surface of the end of the motor shaft, allows the sleeve portion to be circumferentially positioned and rotate together when it engages with the end of the motor shaft through the fitting hole. By providing a fixing screw threaded into the screw hole of the sleeve portion and with its end engaged in a screw slot, the axial position of the fan blade relative to the motor shaft can be positioned. These two structures allow the fan blade to be stably fixed to the motor shaft, while maintaining a simple structure that is easy to manufacture. Furthermore, when installing the fan blade, simply fit the sleeve portion and the motor shaft together and tighten the fixing screw. Disassembly is achieved by loosening the fixing screw in the opposite direction. By positioning the sleeve portion on the front side of the blade portion, away from the drive motor, the user can tighten and loosen the fixing screw on the front side of the blade portion, avoiding operation in the narrow space between the blade portion and the drive motor, thus facilitating operation.

[0006] According to some embodiments of the present invention, the central part has a flared portion on the periphery of the hole on the side of the sleeve hole near the drive motor, and the flared portion has a guide wall surface.

[0007] According to some embodiments of the present invention, the central part includes a connecting plate, the sleeve part is disposed on the front side plate surface of the connecting plate, and the blade part is connected to the connecting plate.

[0008] According to some embodiments of the present invention, a reinforcing part is connected between the end of the sleeve portion connected to the connecting plate and the front side surface of the connecting plate.

[0009] According to some embodiments of the present invention, the reinforcing part is an annular boss surrounding the sleeve part.

[0010] According to some embodiments of the present invention, the sleeve portion, the connecting plate, and the reinforcing portion are integrally formed structures.

[0011] According to some embodiments of the present invention, the blade portion and the center portion are separate structures, and the blade portion is mounted and connected to the center portion.

[0012] According to some embodiments of the present invention, the blade portion and the center portion are separate structures, and the blade portion is installed and connected to the center portion; the connecting plate is provided with connecting pieces corresponding to the blade portions one by one, and the blade portions overlap the corresponding connecting pieces and are fixed to each other by fasteners.

[0013] According to some embodiments of the present invention, the fan body includes a support base, a motor housing, a rear grille, and a front grille. The drive motor is connected to the support base. The motor housing covers the drive motor and is fixed to the drive motor. The rear grille is fixed to the front end of the motor housing. The front grille is detachably fixed to the front end of the rear grille. The front grille and the rear grille together form a fan blade cavity. The motor shaft extends out of the fan blade cavity, and the fan blades are disposed in the fan blade cavity.

[0014] According to some embodiments of the present invention, the support base includes a base and a rotating base, the rotating base is pivotally connected to the support base and the pivot axis is horizontally arranged, and the drive motor is pivotally connected to the rotating base and the pivot axis is vertically arranged.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present invention; Figure 3 This is a partially enlarged schematic diagram of the drive motor according to an embodiment of the present utility model; Figure 4 This is a frontal perspective view of the fan blade according to an embodiment of the present utility model; Figure 5 for Figure 4 Enlarged view of point A; Figure 6 This is a three-dimensional view of the back side of the fan blade according to an embodiment of the present utility model; Figure 7 for Figure 6 Enlarged view of point B; Figure 8 This is a cross-sectional view of the fan blades and drive motor after they are assembled according to an embodiment of the present utility model; Figure 9 for Figure 8 Enlarged diagram of point C.

[0017] Figure label: Fan body 100, support base 110, motor housing 120, rear grille 130, front grille 140, base 111, rotating seat 112; Drive motor 200, motor shaft 210, flat cut default part 211, screw slot 212; Fan blade 300, center part 310, blade part 320, sleeve part 311, socket hole 3111, screw hole 3112, flared part 312, guide wall 3121, connecting plate 313, reinforcing part 314, connecting piece 3131; Fixing screws 400. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 9 A fan with easy-to-install fan blades includes: a fan body 100, a drive motor 200, and fan blades 300. The drive motor 200 is installed on the fan body 100, and the drive motor 200 is provided with a motor shaft 210. A flat-cut default portion 211 is opened on the circumferential surface of the end of the motor shaft 210, and a screw slot 212 is opened at the flat-cut default portion 211. The fan blade 300 includes a central portion 310 and multiple blade portions 320. The blade portions 320 are connected around the central portion 310. The central portion 310 is provided with a sleeve portion 311, and the sleeve portion 311 is provided with a socket hole 3111. The socket hole 3111 is adapted to the end shape of the motor shaft 210. The sleeve portion 311 is fitted onto the end of the motor shaft 210 through the socket hole 3111. The airflow direction of the fan blade 300 is defined as forward. The sleeve portion 311 is located in front of the blade portions 320. A threaded hole 3112 is opened on the circumferential surface of the sleeve portion 311, which extends to the socket hole 3111. A fixing screw 400 is threaded into the threaded hole 3112, and the end of the fixing screw 400 is engaged in the screw slot 212.

[0023] The aforementioned fan, by providing a sleeve portion 311 with a fitting hole 3111 that matches the end of the motor shaft 210, and a flat-cut portion 211 on the circumferential surface of the end of the motor shaft 210, allows the sleeve portion 311 to engage with the end of the motor shaft 210 through the fitting hole 3111, enabling them to be circumferentially positioned and rotate together. By providing a fixing screw 400 threaded into the screw hole 3112 of the sleeve portion 311 and with its end engaged in the screw slot 212, the axial position of the fan blade 300 relative to the motor shaft 210 can be positioned. These two structures allow the fan blade 300 to be stably fixed to the motor shaft 210, while also providing a simple structure that is easy to manufacture. In addition, when installing the fan blade 300, simply connect the sleeve part 311 and the motor shaft 210, and then tighten the fixing screw 400. When disassembling, simply loosen the fixing screw 400 in the opposite direction. By positioning the sleeve part 311 on the front side of the blade part 320, away from the drive motor 200, the user can tighten and loosen the fixing screw 400 on the front side of the blade part 320, avoiding operation in the narrow space between the blade part 320 and the drive motor 200, making operation convenient.

[0024] In this embodiment, the central portion 310 has a flared portion 312 on the periphery of the opening of the corresponding sleeve hole 3111 near the drive motor 200. The flared portion 312 has a guide wall surface 3121. With the above structure, when the sleeve portion 311 is sleeved onto the motor shaft 210, the guide wall surface 3121 of the flared portion 312 can guide the motor shaft 210 into the sleeve hole 3111, thereby facilitating assembly. In this embodiment, the guide wall surface 3121 is an arc-shaped surface; in some embodiments, a sloped surface can also be used for guidance.

[0025] In one embodiment, the central portion 310 includes a connecting plate 313, a sleeve portion 311 is disposed on the front side surface of the connecting plate 313, and a blade portion 320 is connected to the connecting plate 313.

[0026] In this embodiment, a reinforcing portion 314 is provided between the end of the sleeve portion 311 that connects to the connecting plate 313 and the front side surface of the connecting plate 313. This structure enhances the connection strength between the sleeve portion 311 and the connecting plate 313.

[0027] In one embodiment, the reinforcing part 314 is an annular boss surrounding the sleeve part 311, thus providing good structural strength. In other embodiments, the reinforcing part 314 may also be a reinforcing rib structure, which can be configured according to the actual situation.

[0028] In this embodiment, the sleeve portion 311, the connecting plate 313, and the reinforcing portion 314 are integrally formed. This integrally formed structure provides better structural strength and is easier to manufacture.

[0029] In this embodiment, the blade portion 320 and the center portion 310 are separate structures, with the blade portion 320 mounted and connected to the center portion 310. This structure reduces the manufacturing difficulty of the fan blade 300 and allows for the combination of different blade portions 320 as needed, providing good production flexibility.

[0030] In this embodiment, the connecting plate 313 is provided with connecting pieces 3131 corresponding to the blade portions 320 one by one. The blade portions 320 overlap the corresponding connecting pieces 3131 and are fixed to each other by fasteners. Using the above structure, the blade portions 320 can be securely fixed. In this embodiment, the fasteners can be screws or rivets, and the specific configuration can be determined according to the actual situation.

[0031] In this embodiment, the fan body 100 includes a support base 110, a motor housing 120, a rear grille 130, and a front grille 140. A drive motor 200 is connected to the support base 110. The motor housing 120 covers and is fixed to the drive motor 200. The rear grille 130 is fixed to the front end of the motor housing 120. The front grille 140 is detachably fixed to the front end of the rear grille 130. The front grille 140 and the rear grille 130 together form a fan blade cavity. The motor shaft 210 extends out of the fan blade cavity, and the fan blades 300 are disposed within the fan blade cavity. The front grille 140 and the rear grille 130 can be connected by snap-fit, snap-fit, threaded fasteners, etc., thus achieving detachability.

[0032] In this embodiment, the support base 110 includes a base 111 and a rotating base 112. The rotating base 112 is pivotally connected to the support base 110 with its pivot axis set horizontally, and the drive motor 200 is pivotally connected to the rotating base 112 with its pivot axis set vertically. With the above structure, the drive motor 200 can rotate relative to the base 111 at multiple angles to adjust its angle, thereby facilitating the adjustment of wind direction.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fan with easily installed blades, characterized in that, include: Fan body (100); A drive motor (200) is installed on the fan body (100). The drive motor (200) is provided with a motor shaft (210). A flat-cut default portion (211) is provided on the circumferential surface of the end of the motor shaft (210). A screw slot (212) is provided at the flat-cut default portion (211). The fan blade (300) includes a central part (310) and multiple blade parts (320). The blade parts (320) are connected around the central part (310). The central part (310) is provided with a sleeve part (311). The sleeve part (311) is provided with a connecting hole (3111). The connecting hole (3111) is adapted to the end shape of the motor shaft (210). The sleeve part (311) is sleeved on the end of the motor shaft (210) through the connecting hole (3111). The direction of airflow of the fan blade (300) is defined as forward. The sleeve part (311) is located in front of the blade parts (320). The circumferential surface of the sleeve part (311) is provided with a threaded hole (3112) that extends to the connecting hole (3111). A fixing screw (400) is threaded into the screw hole (3112), and the end of the fixing screw (400) is engaged in the screw slot (212).

2. The fan with convenient blade installation according to claim 1, characterized in that: The central part (310) has a flared part (312) on the periphery of the side opening of the sleeve hole (3111) near the drive motor (200), and the flared part (312) has a guide wall surface (3121).

3. A fan with convenient blade installation according to claim 1, characterized in that: The central part (310) includes a connecting plate (313), the sleeve part (311) is disposed on the front side plate surface of the connecting plate (313), and the blade part (320) is connected to the connecting plate (313).

4. A fan with convenient blade installation according to claim 3, characterized in that: A reinforcing part (314) is connected between the end of the sleeve part (311) that is connected to the connecting plate (313) and the front side plate surface of the connecting plate (313).

5. A fan with easily installed blades according to claim 4, characterized in that: The reinforcing part (314) is an annular boss provided around the sleeve part (311).

6. A fan with convenient blade installation according to claim 4, characterized in that: The sleeve (311), the connecting plate (313), and the reinforcing part (314) are integrally formed structures.

7. A fan with convenient blade installation according to claim 1, characterized in that: The blade portion (320) and the center portion (310) are separate structures, with the blade portion (320) mounted and connected to the center portion (310).

8. A fan with easily installed blades according to claim 3, characterized in that: The blade portion (320) and the center portion (310) are separate structures, with the blade portion (320) installed and connected to the center portion (310); the connecting plate (313) is provided with connecting pieces (3131) corresponding to the blade portion (320), and the blade portion (320) overlaps the corresponding connecting piece (3131) and is fixed to each other by fasteners.

9. A fan with convenient blade installation according to claim 1, characterized in that: The fan body (100) includes a support base (110), a motor housing (120), a rear grille (130), and a front grille (140). The drive motor (200) is connected to the support base (110). The motor housing (120) covers the drive motor (200) and is fixed to the drive motor (200). The rear grille (130) is fixed to the front end of the motor housing (120). The front grille (140) is detachably fixed to the front end of the rear grille (130). The front grille (140) and the rear grille (130) enclose a fan blade cavity. The motor shaft (210) extends out of the fan blade cavity, and the fan blade (300) is disposed in the fan blade cavity.

10. A fan with convenient blade installation according to claim 9, characterized in that: The support base (110) includes a base (111) and a rotating base (112). The rotating base (112) is pivotally connected to the support base (110) and the pivot axis is set horizontally. The drive motor (200) is pivotally connected to the rotating base (112) and the pivot axis is set vertically.

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