A fan blade quick-mounting structure and a ceiling fan

Abstract

The application discloses a fan blade quick mounting structure and a ceiling fan, which comprises a rotating disc, a rotating shaft arranged on the rotating disc, a fan blade inserted into a slot arranged on the rotating disc, an open slot arranged at the end of the fan blade, a slot side wall and a slot bottom wall of the open slot, an empty part between the slot side wall and the slot bottom wall, a clamping groove arranged on the slot side wall, a clamping block arranged in the open slot, a first arm and a second arm arranged on the clamping block, the clamping block being hinged on the rotating shaft through a hinge part, the swinging directions of the first arm and the second arm being opposite, the first arm abutting against the clamping groove to limit the fan blade from separating outward from the slot, the hinge part being spaced apart from the slot bottom wall, a reset spring connected with the clamping block and driving the first arm to open, so that the first arm is kept abutting against the clamping groove, and a locking mechanism for keeping the first arm in a folded state. The fan blade is only needed to be pushed in or pulled out for dismounting, and the fan blade is more smoothly dismounted and is easy to operate.

Description

Technical Field

[0001] This invention relates to the field of fans, specifically a quick-installation structure for fan blades and a ceiling fan. Background Technology

[0002] For ceiling fans, the fan blades and the rotating disc are separate for easy packaging and transportation. After purchase, users can install the fan blades on the rotating disc and remove them when cleaning is required.

[0003] However, in existing technologies, fan blades are typically secured with screws, requiring users to tighten or loosen these screws during assembly and disassembly, making the process inconvenient. While some technologies now use clips to secure the blades, this method simplifies installation. However, removing the blades requires extensive disassembly of the ceiling fan to expose the clips within the turntable, followed by manual pressing to release them from the blades' restraints. This process further complicates and cumbersomes the removal of the fan blades.

[0004] In order to solve the above-mentioned technical problems, the applicant conducted extensive research and invented and applied for a ceiling fan with quick-disassembly and assembly of fan blades (patent application number: 2023227812750), which makes the disassembly and assembly of fan blades extremely convenient.

[0005] After the above-mentioned patented technology was sampled, it was found through disassembly and assembly testing that at certain times (occasionally), the fan blades were not easy to pull off the turntable. After disassembling the sample and analyzing the design drawings, it was found that when the fan blades were pulled outwards for disassembly, the locking block continued to open under the action of the elastic element, which may cause the long arm of the locking block to re-lock into the slot of the fan blade, making it impossible for the fan blades to be pulled outwards. This affected the smoothness and accuracy of the fan blade disassembly. That is, at certain times, it may be necessary to repeat the disassembly action to remove the fan blades from the turntable.

[0006] In addition, the automatic ejection of the fan blades from the slots during disassembly is not very noticeable, which also affects the user's experience when disassembling the fan blades.

[0007] Therefore, it is necessary to improve and optimize existing ceiling fans. Summary of the Invention

[0008] The present invention aims to solve at least one of the problems of the prior art. To this end, the present invention provides a quick-installation structure for fan blades and a ceiling fan, in which the fan blades can be installed or removed simply by pushing them in or pulling them out, making the disassembly of the fan blades smoother and the operation simple and easy.

[0009] The technical solution adopted by this invention to solve its technical problem is:

[0010] In a first aspect, embodiments of the present invention provide a quick-assembly structure for fan blades, comprising:

[0011] A turntable, wherein slots are provided on the peripheral wall of the turntable and a rotating shaft is provided on the turntable;

[0012] The fan blade is inserted into the slot. The end of the fan blade is provided with an opening slot. The opening slot has a side wall and a bottom wall. There is a clearance between the bottom wall and the side wall. A slot is provided on the side wall.

[0013] A locking block is located in the opening slot. The locking block has a hinge portion and a first arm and a second arm disposed on the hinge portion. The locking block is hinged to the rotating shaft through the hinge portion. When the locking block rotates, the swing directions of the first arm and the second arm are opposite. The first arm abuts against the locking slot to restrict the fan blade from disengaging from the slot. The hinge portion is spaced apart from the bottom wall of the slot.

[0014] A reset spring, connected to the locking block, drives the first arm to open, so that the first arm remains abutting in the locking slot;

[0015] A locking mechanism is used to keep the first arm in the retracted state;

[0016] When unlocking, push the fan blades inward, the bottom wall of the slot pushes the second arm to open, and the first arm retracts in response and disengages from the slot. The first arm is kept in the retracted state by the locking mechanism. Then pull the fan blades outward, the side wall of the slot pushes the second arm to close, and the first arm releases the locking mechanism in response, and the first arm opens and resets.

[0017] Optionally, the turntable is provided with an arc-shaped limiting groove, and the locking block is provided with a limiting block, the limiting block being located in the arc-shaped limiting groove to limit the opening angle of the first arm.

[0018] Optionally, a protrusion is provided in the arc-shaped limiting groove, and the protrusion and the limiting block form the locking mechanism.

[0019] Optionally, the locking block includes a first locking block and a second locking block, wherein the first arm of the first locking block is provided with a buckle, and the first arm of the second locking block is provided with a buckle groove. The buckle and the buckle groove form the locking mechanism. When the first arm is retracted, the buckle engages with the buckle groove, so that the first arm remains in the retracted state.

[0020] Optionally, the groove sidewall has an abutment portion for pushing the first arm to swing, the abutment portion being an inclined wall or an arc-shaped wall.

[0021] Optionally, the end of the second arm is an inclined wall, and the bottom wall of the groove is provided with an inclined surface adapted to the inclined wall, and the inclined wall abuts against the inclined surface; the bottom wall of the groove has an arc-shaped wall adapted to the hinge portion.

[0022] Optionally, the length of the first arm is greater than the length of the second arm, with the first arm forming a long arm and the second arm forming a short arm.

[0023] In a first aspect, embodiments of the present invention also provide another quick-assembly structure for fan blades, including:

[0024] A turntable, wherein a slot is provided on the peripheral wall of the turntable, and an opening slot is provided in the turntable, the slot and the opening slot are positioned correspondingly, the opening slot has a side wall and a bottom wall, an clearance portion is provided between the bottom wall and the side wall, and a slot is provided on the side wall.

[0025] Fan blades are inserted into the slots, and the ends of the fan blades are provided with shafts;

[0026] A locking block is located in the opening slot. The locking block has a hinge portion and a first arm and a second arm disposed on the hinge portion. The locking block is hinged to the rotating shaft through the hinge portion. When the locking block rotates, the swing directions of the first arm and the second arm are opposite. The first arm abuts in the locking slot to restrict the fan blade from disengaging from the slot. The fan blade is spaced apart from the bottom wall of the slot.

[0027] A reset spring, connected to the locking block, drives the first arm to open, so that the first arm remains abutting in the locking slot;

[0028] A locking mechanism is used to keep the first arm in the retracted state;

[0029] When unlocking, push the fan blades inward, the bottom wall of the slot pushes the second arm to open, and the first arm retracts in response and disengages from the slot. The first arm is kept in the retracted state by the locking mechanism. Then pull the fan blades outward, the side wall of the slot pushes the second arm to close, and the first arm releases the locking mechanism in response, and the first arm opens and resets.

[0030] Optionally, the first arm is provided with a buckle, and the fan blade is provided with a fastening groove. When the first arm is retracted, the buckle is fastened into the fastening groove, and the buckle and the fastening groove form the locking mechanism.

[0031] Secondly, embodiments of the present invention provide a ceiling fan, including the quick-release blade structure described in any of the embodiments of the first aspect above.

[0032] The present invention has at least one of the following beneficial effects: In the embodiments of the present invention, an opening groove is provided at the end of the fan blade. The opening groove has a groove side wall and a groove bottom wall, and a clearance portion is provided between the groove bottom wall and the groove side wall. A slot is provided on the groove side wall. The locking block is hinged to the rotating shaft via a hinge joint. When the locking block rotates, the first arm and the second arm of the locking block swing in opposite directions. The first arm abuts in the slot to restrict the fan blade from disengaging from the slot. A return spring connected to the locking block drives the first arm to open, keeping the first arm abutting in the slot. At this time, when the fan blade rotates at high speed, the fan blade is limited by the first arm and the slot and will not disengage from the turntable under centrifugal force, ensuring the safety and reliability of the fan blade during operation. By setting the hinge joint and the groove bottom wall to be spaced apart, when the fan blade needs to be unlocked, the fan blade can be pushed inward relative to the turntable, ensuring that the fan blade has a certain inward pushing stroke. When the fan blade pushes inward, the groove bottom wall pushes the second arm to open. The opened second arm enters the clearance portion. Since the swing directions of the first arm and the second arm are opposite, the first arm... The first arm retracts and disengages from the slot. During the retraction process, the locking mechanism is activated, keeping the first arm in the retracted state. This prevents the first arm from re-entering the slot and preventing the fan blades from being pulled outwards, thus allowing the fan blades to be pulled out smoothly. A single disassembly operation ensures the fan blades can be removed. During the outward pulling of the fan blades, the sidewall of the slot abuts against the second arm, pushing it to retract. The first arm then opens in conjunction with this, releasing the locking mechanism and allowing the first arm to open. Upon reset, after unlocking, the first arm, under the reset force of the reset spring, quickly strikes the side wall of the slot, giving the fan blade an outward pushing force, allowing it to spring outward and improving the disassembly experience. When installing the fan blade, simply push it into the slot on the turntable. During insertion, the blade will abut against the first arm of the locking block, pushing it to retract until the slot on the blade moves to the predetermined position. The first arm, under the action of the reset spring, then engages in the slot, limiting the fan blade and preventing it from being pulled out. In short, throughout the entire process of fan blade installation and removal, the user only needs to insert or pull out the blade, without any manual operation of the locking block. This makes fan blade installation and removal extremely simple, convenient, and quick, requiring minimal effort. By reversing the positions of the locking block and the slot, with the locking block hinged to the fan blade and the slot located on the turntable, the same quick installation and removal effect can be achieved. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of the ceiling fan light in an embodiment of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the fan blade quick-assembly structure in an embodiment of the present invention;

[0035] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure on the other side;

[0036] Figure 3.1 yes Figure 3 A magnified view of part A in the image;

[0037] Figure 4 This is a three-dimensional structural diagram of the turntable in an embodiment of the present invention;

[0038] Figure 5 yes Figure 4 Another perspective illustration;

[0039] Figure 6 This is a schematic diagram of the installation of the reset spring on the turntable in an embodiment of the present invention;

[0040] Figure 7 This is a three-dimensional structural diagram of the first card block in an embodiment of the present invention;

[0041] Figure 8 yes Figure 7 Another perspective illustration;

[0042] Figure 9 This is a three-dimensional structural diagram of the second card block in an embodiment of the present invention;

[0043] Figure 10 yes Figure 9 Another perspective illustration;

[0044] Figure 11 This is a partial three-dimensional structural diagram of the fan blade in an embodiment of the present invention;

[0045] Figure 12 This is a three-dimensional structural diagram of the card block in another embodiment of the present invention;

[0046] Figure 13 yes Figure 12 The diagram shows the quick-release structure when the card block is installed on the turntable;

[0047] Figure 14 This is a schematic diagram of the quick-installation structure when the fan blades are not inserted into the turntable in an embodiment of the present invention;

[0048] Figure 15 This is a schematic diagram of the quick-assembly structure for the process of inserting the fan blade into the turntable in an embodiment of the present invention;

[0049] Figure 16 This is a schematic diagram of the quick-release structure when the fan blades are pushed inward to unlock in an embodiment of the present invention;

[0050] Figure 17 This is a three-dimensional structural diagram of the fan blade quick-assembly structure in another embodiment of the present invention;

[0051] Figure 18 yes Figure 17A three-dimensional structural diagram of the fan blades in the illustrated embodiment;

[0052] Figure 19 yes Figure 18 A magnified view of part B in the image;

[0053] Explanation of icon numbers:

[0054] 1-Turntable, 11-Slot, 12-Shaft, 13-Arc-shaped limiting groove, 14-Protrusion, 2-Fan blade, 21-Opening groove, 211-Slot side wall, 212-Slot bottom wall, 2121-Sloping surface, 2122-Arc-shaped wall, 213-Avoiding part, 214-Card slot, 215-Abutting part, 22-Snap-fit ​​groove, 3-Card block, 31-Hinge part, 32-First arm, 321-Snap, 322-Snap groove, 33-Second arm, 34-Limiting block, 4-Screw, 5-Reset spring, 6-Light fixture. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described below can be arbitrarily combined with each other.

[0056] The following provides many different implementation methods or examples for implementing the structure of the present invention.

[0057] See Figures 1-16An embodiment of the first aspect of the present invention provides a fan blade quick-assembly structure, including a turntable 1, a slot 11 provided on the peripheral wall of the turntable 1, and a rotating shaft 12 provided on the turntable 1; a fan blade 2, inserted into the slot 11, the end of the fan blade 2 being provided with an opening groove 21, the opening groove 21 having a groove side wall 211 and a groove bottom wall 212, a clearance portion 213 being provided between the groove bottom wall 212 and the groove side wall 211, and a locking groove 214 being provided on the groove side wall 211; and a locking block 3, located at... In the opening slot 21, the locking block 3 has a hinge part 31, and a first arm 32 and a second arm 33 disposed on the hinge part 31. The locking block 3 is hinged to the rotating shaft 12 through the hinge part 31. Specifically, the hinge part 31 has a hinge hole, which can be directly fitted onto the rotating shaft 12 and then locked by screws 4. When the locking block 3 rotates, the swing directions of the first arm 32 and the second arm 33 are opposite, that is, the first arm 32 rotates clockwise and the second arm 33 rotates counterclockwise, and vice versa. The first arm 32 abuts against the slot 214 to prevent the fan blade 2 from disengaging from the slot 11. The hinge 31 is spaced from the bottom wall 212 of the slot, and the space allows the fan blade 2 to be pushed inward to facilitate the unlocking action. The return spring 5 is connected to the locking block 3 and drives the first arm 32 to open, so that the first arm 32 remains abutting against the slot 214. In this embodiment, the return spring 5 is specifically a torsion spring. The return force of the torsion spring ensures that the first arm 32 is always abutting against the slot 214, preventing the first arm 32 from disengaging from the slot 214 and causing the fan blade to fail to limit its movement. The locking mechanism is used to keep the first arm 32 in a retracted state. When the first arm 32 is in a retracted state, pulling the fan blade outward will prevent the first arm 32 from entering the slot 214, allowing the fan blade to be pulled out and disassembled.

[0058] The working principle of this invention is as follows:

[0059] ① Working status: See details Figure 3 , Figure 3.1 As shown, the first arm 32 maintains an opening tendency under the action of the reset spring 5, so that the first arm 32 remains in contact with the slot 214. At this time, when the fan blade is rotating at high speed, the fan blade 2 is limited by the first arm 32 and the slot 214 and will not be separated from the turntable 1 under the action of centrifugal force, thus ensuring the safety and reliability of the fan blade during operation.

[0060] ② Disassembly process: See details Figure 16As shown, since there is a gap between the hinge part 31 and the bottom wall 212 of the slot, the fan blade has a certain inward pushing stroke. When unlocking the fan blade, the fan blade 2 is pushed inward, and the bottom wall 212 pushes the second arm 33 to open. The opened second arm 33 enters the clearance part 213. Since the swing directions of the first arm 32 and the second arm 33 are opposite, the first arm 32 is linked to retract and disengage from the slot 214. During the retraction process, the first arm 32 triggers the locking mechanism to work, and the locking mechanism keeps the first arm 32 in the retracted state. Then, the fan blade 2 is pulled outward. Since the first arm 32 is kept in the retracted state, the first arm 32 will not re-enter the slot 214, and therefore will not prevent the fan blade 2 from being pulled outward, so that the outward pulling of the fan blade can be smooth. The fan blade can be removed in a single disassembly action. During the outward pulling of the fan blade 2, the side wall 211 of the opening slot 21 abuts against the second arm 33, which rotates around the pivot 12, effectively retracting. Simultaneously, the first arm 32 rotates and opens, releasing the locking mechanism. After release, the first arm 32, under the return force of the return spring 5, quickly strikes the side wall 211 of the opening slot 21 (specifically, the abutment part 215 described below), giving the fan blade an outward pushing force, allowing it to spring outward and improving the disassembly experience. The first arm 32 then returns to its original position under the action of the return spring 5; the return state is shown in the image. Figure 14 As shown;

[0061] ③ Fan blade installation: See details Figure 15 As shown, when installing the fan blade, simply push the fan blade into the slot 11 of the turntable 1. During the insertion process, the fan blade 2 will abut against the first arm 32 of the locking block 3, pushing the first arm 32 to retract. When the first arm 32 retracts, it will compress the return spring 5, causing the return spring 5 to gradually store elastic return force. The fan blade continues to be pushed inward until the slot 214 on the fan blade 2 moves to the predetermined position. Under the action of the elastic return force of the return spring 5, the first arm 32 automatically locks into the slot 214, obtaining... Figure 3 , Figure 3.1 The working state shown indicates that the fan blades are limited and cannot be pulled out.

[0062] Throughout the entire process of installing and removing the fan blades, users only need to insert or pull out the fan blades, without having to manually operate the locking mechanism. As a result, the installation and removal of the fan blades becomes extremely simple, convenient, and quick, requiring minimal labor.

[0063] See details Figure 3.1 , Figure 4 , Figure 8 and Figure 9As shown, in some embodiments of the present invention, the turntable 1 is provided with an arc-shaped limiting groove 13, and the locking block 3 is provided with a limiting block 34. The limiting block 34 is located in the arc-shaped limiting groove 13 to limit the opening angle of the first arm 32. The arc-shaped limiting groove 13 and the limiting block 34 are provided to ensure that the rotation of the locking block 3 is driven by the arc of the arc-shaped limiting groove 13, thus ensuring the precise rotation of the locking block 3, and to prevent the locking block 3 from... Figure 14 When in the reset state shown, the first arm 32 is over-opened, which may cause the fan blade 2 to be unable to push the first arm 32 to swing when the fan blade 2 is installed.

[0064] See details Figure 12 and Figure 13 As shown, in some embodiments of the present invention, a protrusion 14 is provided in the arc-shaped limiting groove 13, and the protrusion 14 and the limiting block 34 form the locking mechanism. Figure 13 The diagram shows a single-ear structure (with only one locking block). During unlocking, when the first arm 32 retracts, it forces the limiting block 34 to swing to the position of the protrusion 14. The protrusion 14 or the limiting block 34, being a plastic component, will deform until the limiting block 34 swings to the other side of the protrusion 14. The force exerted by the protrusion 14 on the limiting block 34 is set to be greater than the restoring force of the return spring 5, keeping the first arm 32 in a retracted state. Only when the fan blades are pulled outwards does the slot sidewall 211 push the second arm 33 to swing and retract. Under the action of external force, the force exerted by the protrusion 14 on the limiting block 34 is overcome, causing the first arm 32 to open and return to its original position. It is understood that this locking mechanism can also be applied to a double-ear structure (with two locking blocks, including a first locking block and a second locking block), making the single-ear structure easier to implement.

[0065] See details Figure 3.1 , Figures 7-10 , Figure 16 As shown, in some embodiments of the present invention, the locking block has a double-ear structure, including a first locking block and a second locking block. The first arm 32 of the first locking block is provided with a buckle 321, and the first arm 32 of the second locking block is provided with a buckle groove 322. The buckle 321 and the buckle groove 322 form the locking mechanism. See also... Figure 3.1 As shown, when the first arm 32 is in the open state, the latch 321 and the latch groove 322 are disengaged; see details. Figure 16 As shown, when the first arm 32 is in the retracted state, the buckle 321 engages with the buckle groove 322. This locking mechanism is easier to mold and demold, and ensures that the two first arms 32 fit together when retracted, making the fan blades easier and smoother to pull out.

[0066] See details Figure 3.1 as well as Figures 7-12 , Figure 15As shown, in some embodiments of the present invention, the groove sidewall 211 has an abutment portion 215 for pushing the first arm 32 to swing. The abutment portion 215 is an inclined wall or an arc-shaped wall, so that when the abutment portion 215 pushes the first arm 32 to swing and retract, the abutment portion 215 can better fit with the first arm 32, reduce the force applied when pushing the first arm 32 to retract, and also reduce the wear on the abutment portion and the first arm, thus extending the service life.

[0067] See details Figure 3.1 as well as Figures 7-12 As shown, in some embodiments of the present invention, the end of the second arm 33 is an inclined wall, and the bottom wall 212 of the groove is provided with an inclined surface 2121 adapted to the inclined wall. The inclined wall abuts against the inclined surface 2121. When the inclined surface 2121 pushes the second arm 33 to swing open, the inclined wall and the inclined surface 2121 fit better, reducing the force applied when pushing the second arm 33 to open, and also reducing the wear on the bottom wall of the groove and the second arm, thus extending the service life.

[0068] See details Figure 16 as well as Figures 7-12 As shown, in some embodiments of the present invention, the bottom wall 212 of the groove has an arc-shaped wall 2122 adapted to the hinge portion, so that the gap between the bottom wall 212 of the groove and the hinge portion 31 is equal, ensuring that the inward push stroke of the fan blade is sufficient to complete the retraction of the first arm 32 to trigger the locking mechanism, and also making the layout at the position of the locking block 3 more compact.

[0069] See details Figures 7-10 as well as Figure 12 As shown, in some embodiments of the present invention, the length of the first arm 32 is greater than the length of the second arm 33. The first arm 32 forms a long arm and the second arm 33 forms a short arm, so that when the first arm 32 and the second arm 33 swing at the same time, the swing strokes of the two arms are different. That is, the first arm 32 can be driven to close or open by the small stroke of the fan blade pushing inward or pulling outward. The long arm has the effect of amplifying the swing stroke relative to the short arm.

[0070] See details Figures 17-19As shown, an embodiment of the first aspect of the present invention also provides another quick-installation structure for a fan blade, including a turntable 1. A slot 11 is provided on the peripheral wall of the turntable 1, and an opening slot 21 is provided in the turntable 1. The slot 11 and the opening slot 21 are positioned correspondingly. The root of the fan blade 2 passes through the slot 11 and enters the opening slot 21. The opening slot 21 has a side wall 211 and a bottom wall 212. A clearance portion 213 is provided between the bottom wall 212 and the side wall 211, which is used to avoid the second arm 33 described below, allowing the second arm 33 to have space to open. A slot 214 is provided on the side wall 211. The fan blade 2 is inserted into the slot 11, and a rotating shaft 12 is provided at the end of the fan blade 2. A locking block is also included. 3. The locking block 3 can be a single block or a pair of two blocks. The locking block 3 is located in the opening slot 21. The locking block 3 has a hinge portion 31, and a first arm 32 and a second arm 33 disposed on the hinge portion 31. The locking block 3 is hinged to the rotating shaft 12 through the hinge portion 31. When the locking block 3 rotates, the swing directions of the first arm 32 and the second arm 33 are opposite. The first arm 32 abuts in the locking groove 214 to restrict the fan blade from disengaging from the slot 11. The fan blade 2 is spaced apart from the bottom wall 212 of the groove, so that the fan blade 2 has inward pushing space when disassembling the fan blade 2. A return spring is connected to the locking block 3. Specifically, the return spring can be sleeved on the rotating shaft 12. Figure 19 The first arm 32 is obscured by the locking block 3 and is not visible. A return spring is used to drive the first arm 32 to open, so that the first arm 32 remains abutting against the slot 214. A locking mechanism is used to keep the first arm 32 in a retracted state to prevent the first arm 32 from entering the slot 214 when the fan blade 2 is withdrawn. When unlocking is required, the fan blade 2 is pushed inward, and the bottom wall 212 of the slot pushes the second arm 33 to open. The first arm 32 retracts in conjunction and disengages from the slot 214. The first arm 32 is kept in a retracted state by the locking mechanism. Then, the fan blade 2 is pulled outward, and the side wall 211 of the slot pushes the second arm 33 to retract. The first arm 32 releases the locking mechanism in conjunction and opens and resets. In this embodiment, the first arm 32 is provided with a buckle 321, and the fan blade 2 is provided with a fastening groove 22. When the first arm 32 retracts, the buckle 321 fastens into the fastening groove 22. The buckle 321 and the fastening groove 22 form the locking mechanism.

[0071] The working principle is as follows: When installation is required, the fan blade 2 with the locking block 3 installed is inserted into the slot 11. The root of the fan blade 2 passes through the slot 11 and enters the opening slot 21. The first arm 32 of the locking block 3 will gradually retract under the action of the side wall 211 of the opening slot 21. During the retraction process, the return spring is compressed. When the end of the first arm 32 reaches the position of the slot 214, the first arm 32 enters the slot 214 under the action of the return spring, completing the installation of the fan blade. At this time, the locking block 3 (specifically the first arm 32) on the fan blade is limited by the slot 214, preventing the fan blade 2 from moving outward and disengaging from the slot 11. When unlocking is required, push the fan blade inward until the first arm 32 retracts and is locked by the locking mechanism, and then pull it outward.

[0072] See details Figure 1 As shown, an embodiment of the second aspect of the present invention provides a ceiling fan, including a motor (hidden inside the ceiling fan and not shown), and a quick-release blade structure as described in any of the embodiments of the first aspect above. The turntable 1 is driven by the motor. A central shaft is provided on the motor, and a lamp 6 is connected to the central shaft, thus forming a ceiling fan light.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 invention.

Claims

1. A fan blade quick-assembly structure, characterized in that, include: A turntable, wherein slots are provided on the peripheral wall of the turntable and a rotating shaft is provided on the turntable; The fan blade is inserted into the slot. The end of the fan blade is provided with an opening slot. The opening slot has a side wall and a bottom wall. There is a clearance between the bottom wall and the side wall. A slot is provided on the side wall. A locking block is located in the opening slot. The locking block has a hinge portion and a first arm and a second arm disposed on the hinge portion. The locking block is hinged to the rotating shaft through the hinge portion. When the locking block rotates, the swing directions of the first arm and the second arm are opposite. The first arm abuts against the locking slot to restrict the fan blade from disengaging from the slot. The hinge portion is spaced apart from the bottom wall of the slot. A reset spring, connected to the locking block, drives the first arm to open, so that the first arm remains abutting in the locking slot; A locking mechanism is used to keep the first arm in the retracted state; When unlocking, push the fan blades inward, the bottom wall of the slot pushes the second arm to open, and the first arm retracts in response and disengages from the slot. The first arm is kept in the retracted state by the locking mechanism. Then pull the fan blades outward, the side wall of the slot pushes the second arm to close, and the first arm releases the locking mechanism in response, and the first arm opens and resets.

2. The fan blade quick-assembly structure according to claim 1, characterized in that: The turntable is provided with an arc-shaped limiting groove, and the card block is provided with a limiting block. The limiting block is located in the arc-shaped limiting groove to limit the opening angle of the first arm.

3. The fan blade quick-assembly structure according to claim 2, characterized in that: A protrusion is provided in the arc-shaped limiting groove, and the protrusion and the limiting block form the locking mechanism.

4. A fan blade quick-assembly structure according to claim 1 or 2, characterized in that: The locking block includes a first locking block and a second locking block. The first arm of the first locking block is provided with a buckle, and the first arm of the second locking block is provided with a buckle groove. The buckle and the buckle groove form the locking mechanism. When the first arm is retracted, the buckle is engaged in the buckle groove, so that the first arm remains in the retracted state.

5. The fan blade quick-assembly structure according to claim 1, characterized in that: The groove sidewall has an abutment portion that pushes the first arm to swing; the abutment portion is an inclined wall or an arc-shaped wall.

6. The fan blade quick-assembly structure according to claim 1, characterized in that: The end of the second arm is an inclined wall, and the bottom wall of the groove is provided with an inclined surface adapted to the inclined wall, and the inclined wall abuts against the inclined surface; the bottom wall of the groove has an arc-shaped wall adapted to the hinge part.

7. The fan blade quick-assembly structure according to claim 1, characterized in that: The length of the first arm is greater than the length of the second arm, so the first arm forms a long arm and the second arm forms a short arm.

8. A fan blade quick-assembly structure, characterized in that, include: A turntable, wherein a slot is provided on the peripheral wall of the turntable, and an opening slot is provided in the turntable, the slot and the opening slot are positioned correspondingly, the opening slot has a side wall and a bottom wall, an clearance portion is provided between the bottom wall and the side wall, and a slot is provided on the side wall. Fan blades are inserted into the slots, and the ends of the fan blades are provided with shafts; A locking block is located in the opening slot. The locking block has a hinge portion and a first arm and a second arm disposed on the hinge portion. The locking block is hinged to the rotating shaft through the hinge portion. When the locking block rotates, the swing directions of the first arm and the second arm are opposite. The first arm abuts in the locking slot to restrict the fan blade from disengaging from the slot. The fan blade is spaced apart from the bottom wall of the slot. A reset spring, connected to the locking block, drives the first arm to open, so that the first arm remains abutting in the locking slot; A locking mechanism is used to keep the first arm in the retracted state; When unlocking, push the fan blades inward, the bottom wall of the slot pushes the second arm to open, and the first arm retracts in response and disengages from the slot. The first arm is kept in the retracted state by the locking mechanism. Then pull the fan blades outward, the side wall of the slot pushes the second arm to close, and the first arm releases the locking mechanism in response, and the first arm opens and resets.

9. A fan blade quick-assembly structure according to claim 8, characterized in that: The first arm is provided with a buckle, and the fan blade is provided with a fastening groove. When the first arm is retracted, the buckle is fastened into the fastening groove, and the buckle and the fastening groove form the locking mechanism.

10. A ceiling fan, characterized in that: The fan blade quick-assembly structure includes any one of claims 1-9.

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