Quick installation structure for fan blades

Abstract

The present invention relates to the technical field of fans, particularly to a quick installation structure for fan blades. The quick installation structure for fan blades of the present invention comprises a rotating device, a quick installation structure, and fan blades; the rotating device comprises a rotating end and a fixed end; the quick installation structure comprises an insertion component, a locking component, and a rotating carrier connected fixedly to the rotating end. The present invention can install the fan blades onto the fixed end quickly.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202610117771.1, filed on January 27, 2026, which is hereby incorporated by reference in its entirety.TECHNICAL FIELD

[0002] The present invention relates to the technical field of fans, particularly to a quick installation structure for fan blades.BACKGROUND

[0003] Conventional fans such ceiling fans, and their motors and fan blades; the rotating end of the motor is connected fixedly to the fan housing, and the fan housing is connected fixedly to the fan blades through fasteners such as screws.

[0004] Since the installation of a ceiling fan usually requires lifting the motor, and installing the fan blades through screws when the motor is being lifted, it is necessary to hold the fan blades while rotating the screws; with the operation remaining unchanged, installation convenience and speed are both relatively low.SUMMARY

[0005] One objective of the present invention is to solve or alleviate the above technical problems.

[0006] The method adopted by the present invention is a quick installation structure for fan blades, comprising a rotating device, a quick installation structure, and fan blades; the rotating device comprises a rotating end and a fixed end; the quick installation structure comprises an insertion component, a locking component, and a rotating carrier connected fixedly to the rotating end; an insertion groove is provided in the rotating carrier; the insertion component is connected fixedly to the fan blades and comprises a insertion section, which is provided with a locking groove; the locking component is provided with a locking protrusion and is in linear sliding connection with the rotating carrier in the rising and falling direction; the locking protrusion is embedded into the locking groove and tends to move toward the locking groove; at least one of the locking component and the insertion component is provided with a rising and falling bevel, which is set to allow the insertion component to press against the locking component through the rising and falling bevel when it is inserted into the insertion groove, so that the locking protrusion is kept away from the locking groove.

[0007] The effect achieved by the present invention is to install the fan blades onto the fixed end quickly.

[0008] A further technical solution, wherein the quick installation structure further comprises a limiting frame and a locking elastic component, the limiting frame is connected fixedly to the rotating carrier, and the locking elastic component is connected to the limiting frame and the locking component respectively, so that the locking protrusion tends to move toward the locking groove.

[0009] A further technical solution, wherein the quick installation structure further comprises a movable component, which is in linear sliding connection with the rotating carrier in the horizontal direction and tends to move away from the locking component horizontally; at least one of the movable component and the locking component is provided with an unlocking bevel, which is set to allow the movable component to press against the locking component through the unlocking bevel when it approaches the locking component horizontally, so that the locking protrusion is kept away from the locking groove.

[0010] This technical solution can unlock the fan blades easily.

[0011] A further technical solution, wherein the quick installation structure further comprises a connector frame and a reset elastic component; the connector frame is connected fixedly to the rotating carrier, and the reset elastic component is connected to the connector frame and the movable component respectively.

[0012] A further technical solution, wherein the quick installation structure further comprises a connector connected fixedly to the movable component; the reset elastic component is a spring fitted onto the connector, and its two ends press against the connector frame and the movable component respectively.

[0013] This technical solution can ensure smooth linear sliding of the movable component.

[0014] A further technical solution, wherein the rotating carrier comprises a rotating carrier sidewall with an operating port, and the connector comprises a movable operating component, which is inserted into the operating port snugly.

[0015] This technical solution facilitates the use of tools such as Allen wrenches to push the movable operating component.

[0016] A further technical solution, wherein the quick installation structure further comprises a connector frame connected fixedly to the rotating carrier and a connector connected to the movable component, at least one of the movable component and the locking component is provided with a locking bevel, which is set to allow the movable component to press against the locking component through the locking bevel to insert the locking protrusion into the locking groove when it moves away from the connector frame.

[0017] This technical solution can prevent the fan blades from detaching from the rotating carrier due to factors such as vibration, and improve reliability.

[0018] A further technical solution, wherein the connector is connected rotatably to the movable component, the connector comprises a threaded part, the movable component is provided with an inward extension, and the locking bevel is provided on the inward extension, so that the locking bevel of the movable component is closer to the connector frame than the rising and falling bevel of the movable component; the connector frame is in threaded connection with the threaded part of the connector.

[0019] This technical solution can install the fan blades onto the fixed end quickly, prevent the fan blades from detaching from the rotating carrier due to factors such as vibration, and improve reliability.

[0020] A further technical solution, wherein the inner wall of the connector frame is provided with a circular unidirectional protrusion; the cross-section of the unidirectional protrusion is serrated and elastic.

[0021] This technical solution can improve reliability or install the fan blades to the fixed end quickly.

[0022] A further technical solution, wherein the cylindrical part of the connector passes through the movable component snugly; both the movable component and the connector are provided with rotating connection groove; the rotating connector is inserted into the rotating connection groove of the connector and in contact with the rotating connection groove of the movable component.

[0023] This technical solution facilitates the rotating connection between the connector and the movable component in a small space.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a three-dimensional schematic diagram of the fan in the first embodiment.

[0025] FIG. 2 is a three-dimensional exploded view of the fan in the first embodiment; arrow 1 (ARR1) indicates the insertion direction of the fan blade 9, where only one fan blade 9 is shown.

[0026] FIG. 3 is a three-dimensional half-sectional view of the fan in the first embodiment.

[0027] FIG. 4 is a three-dimensional exploded view of the quick installation structure 2 in the first embodiment; the dotted line is the decomposition line.

[0028] FIG. 5 is a three-dimensional schematic diagram of the quick installation structure 2 in the first embodiment, where only one fan blade 9 is shown.

[0029] FIG. 6 is a three-dimensional exploded view of the insertion component 22 and the locking component 23 in the first embodiment; the dotted line is the decomposition line.

[0030] FIG. 7 is a three-dimensional sectional view of the locking component 23, movable component 24, limiting frame 25, and connector 26 in the first embodiment; this sectional view shows the side of the movable component 24.

[0031] FIG. 8 is three-dimensional sectional view 1 of the quick assembly structure 2 in the first embodiment, and shows the cross section of the rising and falling bevel 233.

[0032] FIG. 9 is three-dimensional sectional view 2 of the quick assembly structure 2 in the first embodiment, and shows the cross section of the locking groove 222.

[0033] FIG. 10 is a three-dimensional schematic diagram of the movable component 24 in the second embodiment.

[0034] FIG. 11 is locally enlarged sectional view 1 of the fan in the second embodiment, and shows the cross section of the vertical plane passing through the axis of the connector 26.

[0035] FIG. 12 is an enlarged schematic diagram of detail 1 (DTL1) in FIG. 11.

[0036] FIG. 13 is locally enlarged sectional view 2 of the fan in the second embodiment, and shows the side of the movable component 24.

[0037] FIG. 14 is a schematic diagram of the fan in the third embodiment.

[0038] The attached drawing of the specification that best describes the technical features of the present invention is FIG. 4.

[0039] Arrow 1 (ARR1); detail 1 (DTL1); rotating device 1; rotating end 11; fixed end 12; housing 128; suspension rod 129; covering device 18; quick installation structure 2; rotating carrier 21; insertion groove 211; lifting groove 213; movable component guide groove 214; operation port 216; rotating carrier sidewall 218; rotating device connection part 219; insertion component 22; insertion section 221; locking groove 222; convex edge 223; fan blade inclined section 228; fan blade connection section 229; locking component 23; lock protrusion 232; elevating bevel 233; locking elastic component 234; setback groove 239; movable component 24; unlocking bevel 241; reset elastic component 242; locking bevel 243; inward extension 244; rotating connection groove 246; limiting frame 25; connector 26; movable operating component 261; thread 262; rotating connector 264; unidirectional protrusion 268; connector frame 269; operating tool 8; fan blade 9.DESCRIPTION OF EMBODIMENTS

[0040] Specific embodiments of the present invention are to be described below by reference to the attached drawings of the specification.

[0041] As a specific embodiment, the quick installation structure for fan blades in the first embodiment comprises a rotating device 1, a quick installation structure 2, and fan blades 9.

[0042] The rotating device 1 comprises a rotating end 11 and a fixed end 12. Usually, the rotating device 1 is a motor, its rotating part is the rotating end 11, and its center rod does not rotate but is the fixed end 12. Usually, the fixed end 12 is provided with a housing 128 and connected to a suspension rod 129 for lifting or installing the rotating device 1 to the desired position. It is understandable that the bracket of a floor fan can also be regarded as a suspension rod 129. The bottom end of fixed end 12 can also be provided with a covering device 18, allowing the fan to be used as a ceiling fan lamp.

[0043] The quick installation structure 2 comprises an insertion component 22, a locking component 23, and a rotating carrier 21 connected fixedly to the rotating end 11. For example, the rotating carrier 21 is provided with a rotating device connection part 219, which is connected fixedly to the rotating end 11 through fasteners such as screws. It is understandable that the rotating carrier 21 can rotate with the rotating end 11.

[0044] The rotating carrier 21 is provided with an insertion groove 211.

[0045] The insertion component 22 is connected fixedly to the fan blades 9 and comprises an insertion section 221, which is provided with a locking groove 222. For example, the insertion component 22 comprises an insertion section 221 and a fan blade connection section 229, and the fan blade connection section 229 is connected fixedly to the fan blades 9 through fasteners such as screws. It is understandable that the insertion component 22 can also be connected fixedly to the fan blades 9 by integral molding. For a fan blade 9 that is roughly planar, a fan blade inclined section 228 is provided between the insertion section 221 and the fan blades connection portion 229 to incline the fan blades 9 into an inclined angle; the inclined fan blades 9 realize blowing as the rotating carrier 21 rotates.

[0046] The locking component 23 is provided with a locking protrusion 232 and is connected to the rotating carrier 21 for linear sliding in the rising and falling direction; the locking protrusion 232 is embedded into the locking groove 222 and tends to move toward the locking groove 222. For example, the rotating carrier 21 is provided with a lifting groove 213, and the locking component 23 is inserted into the lifting groove 213 snugly, so that the locking component 23 slides linearly with the rotating carrier 21 in the rising and falling direction.

[0047] At least one of the locking component 23 and the insertion component 221 is provided with a rising and falling bevel 233, which is set to allow the insertion component 221 to press against the rising and falling bevel 233 (the insertion component 221 presses against the rising and falling bevel 233 of the locking component 23, the rising and falling bevel 233 of the insertion component 221 presses against the locking component 23, or the rising and falling bevel 233 of the locking component 23 presses against the rising and falling bevel 233 of the insertion component 221) to lock the part 23 when the insertion component 221 is inserted into the insertion groove 211, so that the locking protrusion 232 moves away from the locking groove 222. For example, the rising and falling bevel 233 is a plane that decreases in height gradually as it approaches the rotation axis of the rotating end 11.

[0048] The working principle is that after the disassembled fan and the container of the packaged fan are transported to the place of use, it is necessary to connect the fan blades 9 with the rotating end 11, and insert the insertion component 221 into the insertion groove 211. During this process, the insertion component 221 is pressed against by the rising and falling bevel 233 so that the locking component 23 rises or falls until the locking protrusion 232 faces the locking groove 222 directly. At this point, due to the trend of the locking protrusion 232 to move toward the locking groove 222, the locking protrusion 232 is embedded into the locking groove 222 to prevent the fan blades 9 from detaching from the rotating end 11, so that the fan blades 9 can be installed on the fixed end 12 quickly.

[0049] As a specific embodiment, the quick installation structure 2 further comprises a limiting frame 25 and a locking elastic component 234, the limiting frame 25 is connected fixedly to the rotating carrier 21, and the locking elastic component 234 is connected to the limiting frame 25 and the locking component 23 respectively, so that the locking protrusion 232 tends to move toward the locking groove 222. For example, the locking elastic component 234 is a spring and its two ends press against the limiting frame 25 and the locking component 23 respectively.

[0050] As a specific embodiment, the quick installation structure 2 further comprises a movable component 24, which is in linear sliding connection with the rotating carrier 21 in the horizontal direction and tends to move away from the locking component 23 horizontally. For example, the movable component 24 is in linear sliding connection with the rotating carrier 21 in the horizontal direction along the axis pointing toward the fixed end 12; at least one of the movable component 24 and the locking component 23 is provided with an unlocking bevel 241, which is set so allow the movable component 24 to press against the locking component 23 through the unlocking bevel 241 when it approaches the locking component 23 horizontally, so that the locking protrusion 232 moves away from the locking groove 222. For example, the unlocking bevel 241 is a plane that decreases in height gradually as it approaches the rotation axis of the rotating end 11. When a tool such as an Allen wrench is used to press the movable component 24, the movable component 24 is closer to the locking component 23, the unlocking bevel 241 presses against the locking component 23, causing it to rise and fall, and the locking protrusion 232 moves away from the locking groove 222. At this point, the insertion component 221 and the fan blades 9 can be extracted from the insertion groove 211 of the rotating carrier 21, making it easy to unlock the fan blades 9 in cases where the fan has to be moved such as home moving.

[0051] As a specific embodiment, the quick installation structure 2 further comprises a connector frame 269 and a reset elastic component 242; the connector frame 269 is connected fixedly to the rotating carrier 21, and the reset elastic component 242 is connected to the connector frame 269 and the movable component 24 respectively, so that the movable component 24 tends to move away from the locking component 23 horizontally.

[0052] As a specific embodiment, the quick installation structure 2 further comprises a connector 26 connected fixedly to the movable component 24, such as being connected fixedly by molding the connector 26 and the movable component 24 integrally; the reset elastic component 242 is a spring fitted onto the connector 26, and its two ends press against the connector frame 269 and the movable component 24 respectively. This embodiment can prevent the reset elastic component 242 from bending or tilting, which may cause the movable member 24 to tilt under stress, thereby ensuring the smooth linear sliding of the movable member 24.

[0053] As a specific embodiment, the rotating carrier 21 comprises a rotating carrier sidewall 218 with an operating port 216, and the connector 26 comprises a movable operating component 261; the movable operating component 261 is inserted into the operating port 216 snugly. This implementation method facilitates the use of a tool such as an Allen wrench to push the movable operating component 261

[0054] The difference of the quick installation structure for fan blades in the second embodiment from that in the first embodiment lies in the locking component 23 and the connector 26.

[0055] As a specific embodiment, the quick installation structure 2 further comprises a connector frame 269 connected fixedly to the rotating carrier 21 and a connector 26 connected to the movable component 24, and at least one of the movable component 24 and the locking component 23 is provided with a locking bevel 243, which is set to allow the movable component 24 to press against the locking component 23 through the locking bevel 243 when it 24 moves away from the connector frame 269, so that the locking protrusion 232 is inserted into the locking groove 222. For a ceiling fan that does not require the frequent disassembly and reassembly of the fan blades 9, or one with heavy fan blades 9 requiring attention to safety, the movable element 24 relies on the centrifugal force generated during rotation (although the movable element 24 is usually light in weight and the centrifugal force generated by it is small, it can still generate a certain effect) or the method described below to make the locking protrusion 232 tend to be inserted into the locking groove 222, thereby preventing the fan blades 9 from detaching from the rotating carrier 21 due to factors such as vibration, and improving reliability.

[0056] As a specific embodiment, as shown in FIG. 10, the connector 26 is connected rotatably to the movable component 24 and comprises a section with a thread 262, the movable component 24 is provided with an inward extension 244, and the locking bevel 243 is provided on the inward extension 244 so that the locking bevel 243 of the movable component 24 is closer to the connector frame 269 than the rising and falling bevel 233 of the movable component 24. It should be noted that FIG. 10 shows the locking bevel 243 and the inward extension 244 on one side of the movable component 24 only for ease of comparison. Usually, both sides of the movable component 24 are provided with a locking bevel 243 and an inward extension 244. The connector frame 269 is thread-connected to the threaded portion of the connector 26. When a tool such as an Allen wrench is used to rotate the connector 26, the movable component 24 moves away from the connector frame 269, the locking protrusion 232 is inserted into the locking groove 222, the threaded connection between the thread 262 and the connector frame 269 can keep the locking protrusion 232 inserted into the locking groove 222, thereby improving safety. When the fan blade 9 are installed, an operating tool 8 such as an Allen wrench is used to rotate connector 26, so that the movable component 24 is close to the connector frame 269 and remains so, thereby facilitating the insertion of the insertion component 221 into the insertion groove 211. It should be noted that although this embodiment reduces the convenience of fan blade 9 installation to some extent compared to the first embodiment, as mentioned above, for a ceiling fan that does not require the frequent disassembly and reassembly of the fan blades 9, or one with heavy fan blades 9 requiring attention to safety, the frequency of installing the fan blades 9 quickly is not high. Therefore, this embodiment can install the fan blades 9 to the fixed end 12 quickly (with lower portability than the first embodiment), and also prevent the fan blades 9 from detaching from the rotating carrier 21 due to factors such as vibration, and improve reliability. Of course, in this implementation, a reset elastic component 242 can still be provided to further improve reliability.

[0057] As a specific embodiment, the inner wall of the connector frame 269 is provided with a circular unidirectional protrusion 268 (i.e., the unidirectional protrusion 268 is circular other than spiral); the cross section of the unidirectional protrusion 268 is serrated and elastic, e.g., the connector frame 269 is elastic because it is made from plastic. As shown in FIG. 12, the cross section of the unidirectional protrusion 268 is roughly a right-angled triangle or trapezoid with a hypotenuse or right-angled side. In the case where the hypotenuse of the unidirectional protrusion 268 is close to the connector frame 269 (as shown in FIG. 12), the connector 26 can move away from the connector frame 269 easily, making it easier for the movable component 24 to move away from the connector frame 269, thereby improving reliability. In the case where the right-angled side of the unidirectional protrusion 268 is close to the connector frame 269 (not shown in the attached drawing, opposite to the case shown in FIG. 12), the connector 26 can approach the connector frame 269 easily, making it easier for the movable component 24 to approach the connector frame 269. The unidirectional protrusion 268 can be elastically deformed by pressing the connector 26 with the operating tool 8, and pressing the thread 262 against the unidirectional protrusion 268. The connector 26 and the movable component 24 can approach the connector frame 269 quickly to be unlocked, thereby enabling the fan blades 9 to be installed to the fixed end 12 quickly.

[0058] As a specific embodiment, the cylindrical part of the connector 26 passes through the movable component 24 snugly; the movable component 24 and the connector 26 are both provided with a rotating connection groove 246; the rotating connector 264 is inserted into the rotating connection groove 246 of the connector 26 and in contact with the rotating connection groove 246 of the movable component 24, thereby connecting the connector 26 and the movable component 24 rotatably. The rotating connector 264 is a snap ring, etc. This implementation facilitates the rotating connection between the connector 26 and the movable component 24 in a small space.

[0059] The difference of the quick installation structure for fan blades in the third embodiment from that in the first embodiment lies in the number of fan blades 9 and the movable operating component 261. The quick installation structure for fan blades in the third embodiment has four fan blades 9, and the movable operating component 261 passes through the operating port 216 and extends beyond the rotating carrier sidewall 218.

[0060] Terms such as first and second used in the present invention are not intended to indicate any order, quantity or importance, but are used for distinction only.

[0061] Terms such as one and one type used in the present invention are not intended to indicate any quantity restriction, but to indicate the existence of at least one mentioned object.

[0062] Terms such as top, bottom, side, longitudinal, transverse, middle, center, outer, inner, horizontal, vertical, left, right, upper, and lower used in the present invention are intended to indicate relative positions rather than absolute positions.

[0063] Terms such as rough, overall, approximate, and similar used in the present invention are intended to indicate limiting terms that have features but allow certain deviations. The quantity of a certain deviation allowed may vary depending on the specific background; for example, dimensional deviations may depend on specific backgrounds including without limitation relevant standards for dimensional tolerances.

Claims

1. A quick installation structure for fan blades, comprising a rotating device, a quick installation structure, and fan blades; the rotating device comprises a rotating end and a fixed end; the quick installation structure comprises an insertion component, a locking component, and a rotating carrier connected fixedly to the rotating end;It is characterized that an insertion groove is provided in the rotating carrier; the insertion component is connected fixedly to the fan blades and comprises a insertion section, which is provided with a locking groove; the locking component is provided with a locking protrusion and is in linear sliding connection with the rotating carrier in the rising and falling direction; the locking protrusion is embedded into the locking groove and tends to move toward the locking groove; at least one of the locking component and the insertion section is provided with a rising and falling bevel, which is set to allow the insertion section to press against the locking component through the rising and falling bevel when it is inserted into the insertion groove, so that the locking protrusion is kept away from the locking groove.

2. The quick installation structure for fan blades according to claim 1, wherein the quick installation structure further comprises a limiting frame and a locking elastic component, the limiting frame is connected fixedly to the rotating carrier, and the locking elastic component is connected to the limiting frame and the locking component respectively, so that the locking protrusion tends to move toward the locking groove.

3. The quick installation structure for fan blades according to claim 1, wherein the quick installation structure further comprises a movable component, which is in linear sliding connection with the rotating carrier in the horizontal direction and tends to move away from the locking component horizontally; at least one of the movable component and the locking component is provided with an unlocking bevel, which is set to allow the movable component to press against the locking component through the unlocking bevel when it approaches the locking component horizontally, so that the locking protrusion is kept away from the locking groove.

4. The quick installation structure for fan blades according to claim 3, wherein the quick installation structure further comprises a connector frame and a reset elastic component; the connector frame is connected fixedly to the rotating carrier, and the reset elastic component is connected to the connector frame and the movable component respectively.

5. The quick installation structure for fan blades according to claim 4, wherein the quick installation structure further comprises a connector connected fixedly to the movable component; the reset elastic component is a spring fitted onto the connector, and its two ends press against the connector frame and the movable component respectively.

6. The quick installation structure for fan blades according to claim 5, wherein the rotating carrier comprises a rotating carrier sidewall with an operating port, and the connector comprises a movable operating component, which is inserted into the operating port snugly.

7. The quick installation structure for fan blades according to claim 1, wherein the quick installation structure further comprises a connector frame connected fixedly to the rotating carrier and a connector connected to the movable component, at least one of the movable component and the locking component is provided with a locking bevel, which is set to allow the movable component to press against the locking component through the locking bevel to insert the locking protrusion into the locking groove when it moves away from the connector frame.

8. The quick installation structure for fan blades according to claim 7, wherein the connector is connected rotatably to the movable component, the connector comprises a threaded part, the movable component is provided with an inward extension, and the locking bevel is provided on the inward extension, so that the locking bevel of the movable component is closer to the connector frame than the rising and falling bevel of the movable component; the connector frame is in threaded connection with the threaded part of the connector.

9. The quick installation structure for fan blades according to claim 8, wherein the inner wall of the connector frame is provided with a circular unidirectional protrusion; the cross-section of the unidirectional protrusion is serrated and elastic.

10. The quick installation structure for fan blades according to claim 8, wherein the cylindrical part of the connector passes through the movable component snugly; both the movable component and the connector are provided with rotating connection groove; the rotating connector is inserted into the rotating connection groove of the connector and in contact with the rotating connection groove of the movable component.

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