Quick fan blade mounting structure and fan using same

Abstract

A quick fan blade mounting structure, comprising a rotary disk (1) and fan blade bodies (2), wherein slots (4) are provided in a circumferential face of the rotary disk (1); a movable locking device (3) and a self-locking part (52) are at least provided on a side face of each slot (4); first protrusions (21), snap-fitting positions (22) and second protrusions (23) are symmetrically provided on side faces of a root (20) of the fan blade body (2) in a direction from the front end to the rear end thereof; the locking device (3) has a tendency to move away from the self-locking part (52) and close to the root (20); and a fan blade and the locking device (3) have the following two states therebetween: a first state in which the locking device (3) locks the root (20) in the slot (4), and a second state in which the locking device (3) is disengaged from the snap-fitting position (22) and is locked to the self-locking part (52), such that the root (20) can be disengaged from the slot (4), the second protrusion (23) is disengaged from the slot (4) along with the root (20) to drive an unlocking part (62) to move, and the unlocking part (62) moves to cause the locking device (3) to be disengaged from the self-locking part (52) and reset. The fan blade bodies (2) and the rotary disk (1) are assembled and disassembled without the need for using tools, making the operation simple and easy.

Description

A fan blade quick installation structure and a fan using the same Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a fan blade quick installation structure and a fan using the same. Background Art

[0002] Currently, ceiling fans on the market consist of a turntable and several blades, which are fastened to the turntable with multiple bolts. To minimize size, the blades and turntable are packaged and shipped separately, requiring users to assemble them using the included tools. Both disassembly and assembly of these ceiling fans require tools. Technical issues

[0003] The object of the present invention is to provide a quick installation structure for fan blades that does not require tools for installation or disassembly. Technical Solutions

[0004] The object of the present invention is achieved in this way.

[0005] A fan blade quick installation structure, comprising

[0006] The turntable has a slot on its circumference, and at least one set of movable locking devices and self-locking parts are provided on the side of the slot.

[0007] The blade body, the root side of the blade body is symmetrically provided with a first convex portion, a locking portion and a second convex portion from the front end to the rear end.

[0008] The locking device has a tendency to move away from the self-locking portion and closer to the root. There are two states between the fan blade and the locking device:

[0009] First state: When the fan body is connected to the turntable, the root is inserted into the slot, and the first protrusion pushes the locking device close to the self-locking part until the locking device is separated from the first protrusion and is mutually limited with the corresponding locking position. The unlocking part of the locking device moves with the locking device until it contacts the turntable to lock the root in the slot.

[0010] Second state: When the fan blade body is disengaged from the turntable, the root continues to be inserted into the slot, and the second protrusion pushes the locking device out of the position and locks with the self-locking part, so that the root can be disengaged from the slot. The second protrusion drives the unlocking part to move as the root is disengaged from the slot, and the action of the unlocking part causes the locking device to disengage from the self-locking part and reset.

[0011] The fan blade body and the turntable in the ceiling fan of the present invention can be assembled and disassembled without using tools, and the operation is simple and easy.

[0012] The above technical solution can also be further improved as follows.

[0013] In a more specific embodiment, the locking device includes a rotating member and an elastic member. The rotating member is rotatably connected to the rotating disk. The rotating member extends a limit portion and the unlocking portion. The limit portion and the corresponding latch are mutually restrained. The ends of the elastic member respectively abut the limit portion and the rotating disk. The elastic force of the elastic member forces the limit portion away from the self-locking portion until the unlocking portion and the rotating disk abut against each other. The elastic member rotates the rotating member, causing the limit portion to engage the latch. At the same time, the unlocking portion abuts the rotating disk to prevent the rotating member from continuing to rotate. This ensures that the limit portion and the latch are mutually restrained to withstand the centrifugal force caused by the rotation of the fan body.

[0014] More specifically, the turntable has mounting slots on either side of the slot, and the locking device is rotatably mounted within the mounting slots. A third protrusion is provided near the slot opening. The elastic force of the elastic member tends to cause the unlocking portion and the third protrusion to abut against each other. When the unlocking portion retracts into the mounting slot and abuts against the third protrusion, the stopper extends into the slot. The mounting slots facilitate rotation and installation of the locking device, and the third protrusion facilitates restraining the unlocking portion.

[0015] In a more specific embodiment, the mounting slot is provided with the self-locking portion, which is an elastic buckle groove. A latching protrusion is provided on the side of the limiting portion facing away from the root. When the latching protrusion is inserted into the elastic buckle groove, the locking device and the self-locking portion are locked. When the limiting portion retracts into the mounting slot, the unlocking portion extends into the slot. The locking structure of the self-locking portion and the limiting portion is simple and easy to implement.

[0016] In a more specific embodiment, the mounting groove is provided with a first positioning groove, the limiting portion is provided with a second positioning groove on the side facing away from the root portion, and the elastic member is a spring, one end of the elastic member is placed in the first positioning groove, and the other end of the elastic member is placed in the second positioning groove. The elastic member keeps the limiting portion away from the self-locking portion. The elastic member is easy to install.

[0017] More specifically, the turntable end face has a hollowed-out portion connected to a mounting slot, a positioning stud is provided in the mounting slot, and a through-hole is provided in the rotating member. The rotating member is threaded onto the positioning stud through the through-hole. A screw and the positioning stud are threadedly connected, and a nut on the screw restrains the rotating member on the positioning stud, allowing the rotating member to rotate around the positioning stud. The locking device is easy to install.

[0018] More specifically, the first protrusion is provided with a first guide surface, through which the first protrusion contacts the stopper, and the second protrusion is provided with a second guide surface and a third guide surface, through which the second protrusion contacts the stopper, and through which the second protrusion contacts the unlocking portion. The first and second protrusions facilitate and reliably push the rotating member.

[0019] In a more specific solution, when the locking device and the latch are mutually limited, an unlocking gap is left between the root and the inner end face of the slot, and the unlocking gap facilitates the unlocking action of the root.

[0020] In a more specific embodiment, a first protrusion and a second protrusion are spaced apart on the side of the root portion, and a recess between the first and second protrusions constitutes the locking position. A clearance notch is provided at the root portion corresponding to the unlocking portion. When the second protrusion locks the locking device and the self-locking portion, the unlocking portion is positioned within the clearance notch. The clearance notch prevents motion interference between the unlocking portion and the root portion, while facilitating the second protrusion to drive the unlocking portion.

[0021] In a more specific solution, guide grooves are provided on the sides of the slot along the direction of root insertion. The guide grooves avoid the locking devices. Positioning ridges are provided on the corresponding sides of the root along the direction of root insertion. The positioning ridges avoid the first ridge, the latch, and the second ridge. The positioning ridges are inserted into the guide grooves to guide the root into the slot. The guide grooves and positioning ridges facilitate the directional insertion of the root into the slot. The locking devices on both sides stably and reliably lock the root. At the same time, they also withstand the torsional force when the turntable drives the fan blade body to rotate, preventing the locking device from being stressed. This ensures stable and reliable operation and a long service life.

[0022] More specifically, the slot is symmetrically provided with the locking device and self-locking portion on the left and right sides, and the blade body is symmetrically provided with the first protrusion, the latch, and the second protrusion on the left and right sides, and the upper and lower sides, from the front to the rear end. The symmetrical locking of the blade body and the slot ensures more uniform force distribution and a safer structure.

[0023] In a more specific solution, the locking device and the self-locking portion are provided on one side of the slot, and the first protrusion, the latching portion, and the second protrusion are provided on one side of the corresponding blade body, and the other side of the root abuts against the other side of the slot. The locking structure of the blade body and the slot is simple and low in cost.

[0024] A more specific solution is a fan, comprising the above-mentioned fan blade quick installation structure. Beneficial effects

[0025] (1) The fan body and the turntable of the ceiling fan of the present invention can be assembled and disassembled without the use of tools, and the operation is simple and easy.

[0026] (2) The elastic member causes the rotating member to rotate, that is, the limiting portion will be locked into the locking position. At the same time, the unlocking portion abuts against the turntable to prevent the rotating member from continuing to rotate, ensuring that the limiting portion and the locking position limit each other to withstand the centrifugal force when the fan blade body rotates.

[0027] (3) The mounting groove facilitates the rotation and installation of the locking device, and the third protrusion facilitates the restriction of the unlocking part. The locking structure of the self-locking part and the limiting part is simple and easy to implement. The locking device is simple and easy to install. The unlocking gap facilitates the unlocking action of the root. The clearance gap avoids motion interference between the unlocking part and the root, and at the same time facilitates the second protrusion to drive the unlocking part to move.

[0028] (4) The guide groove and the positioning ridge facilitate the directional insertion of the root into the slot. The locking devices on both sides lock the root stably and reliably. At the same time, they also withstand the torque when the turntable drives the fan blade body to rotate, avoiding the locking device from being stressed. The locking device operates stably and reliably and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of the first embodiment.

[0030] FIG2 is a schematic diagram of the decomposed structure of the first embodiment.

[0031] FIG3 is a schematic structural diagram of the turntable in the first embodiment.

[0032] FIG4 is a schematic structural diagram of the fan blade body in the first embodiment.

[0033] FIG5 is a schematic structural diagram of the rotating member in the first embodiment.

[0034] FIG6 is a schematic diagram of the partial cross-sectional structure of the first embodiment (the first protrusion pushes the limiting portion to move).

[0035] FIG7 is a schematic diagram of a partial cross-sectional structure of the first embodiment (the first protrusion and the latch are mutually limited).

[0036] FIG8 is a schematic diagram of a partial cross-sectional structure of the first embodiment (the limiting portion and the self-locking portion are locked).

[0037] FIG9 is a schematic diagram of a partial cross-sectional structure of the first embodiment (the second convex portion drives the unlocking portion to move).

[0038] FIG10 is a schematic diagram of the partial cross-sectional structure of the first embodiment (the root is separated from or inserted into the slot). Modes for Carrying Out the Invention

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] In the first embodiment, as shown in Figures 1-10, a quick installation structure for fan blades is provided, including a turntable 1, a fan blade body 2, and a locking device 3. A plurality of slots 4 are evenly arranged on the circumference of the turntable 1, and mounting slots 5 are respectively provided on both sides of the slots 4. The mounting slots 5 on both sides of the slots 4 are symmetrically arranged, and the mounting slots 5 and the slots 4 are connected. Guide grooves 41 are provided on the top and bottom surfaces of the slots 4 along the insertion direction of the root 20, and the guide grooves 41 avoid the locking device 3. In this embodiment, the number of guide grooves 41 on the top and bottom surfaces of the slots 4 is different, and the upper and lower positions are staggered.

[0041] The end surface of the turntable 1 features a hollowed-out portion 11 that connects to the mounting slot 5. A set of locking devices 3 are movably mounted within the mounting slot 5 through the hollowed-out portion 11. The locking devices 3 are symmetrically positioned on either side of a slot 4. The mounting slot 5 is equipped with a positioning stud 51. The side of the mounting slot 5 facing the slot 4 is provided with a self-locking portion 52 and a first positioning slot 53. A third protrusion 54 extends from the side of the mounting slot 5 near the opening of the slot 4. Specifically, the self-locking portion 52 is a resilient snap-in groove 55, preferably extending from the sidewall of the mounting slot 5. The first positioning slot 53 is open toward the hollowed-out portion 11.

[0042] The locking device 3 includes a rotating member 6 and an elastic member 7. The rotating member 6 is rotationally connected to the turntable 1. Specifically, the rotating member 6 has a through hole 60, through which the rotating member 6 is inserted onto the positioning stud 51. The screw 8 is threadedly connected to the positioning stud 51. The nut of the screw 8 restrains the rotating member 6 on the positioning stud 51, allowing the rotating member 6 to rotate around the positioning stud 51. The rotating member 6 extends to include a stopper 61 and an unlocking portion 62. The stopper 61 has a latching protrusion 63 and a second positioning groove 64 on the side facing away from the root portion 20. The second positioning groove 64 is open toward the hollow portion 11.

[0043] The elastic force of the elastic member 7 tends to cause the unlocking portion 62 and the third protrusion 54 to counteract each other, that is, the rotating member 6 tends to move away from the self-locking portion 52 and toward the root 20. Specifically, the elastic member 7 is a spring, with one end of the elastic member 7 positioned in the first positioning groove 53 and the other end of the elastic member 7 positioned in the second positioning groove 64. Under normal circumstances, the elastic member 7 forces the limiting portion 61 away from the self-locking portion 52 until the unlocking portion 62 retracts into the installation slot 5, counteracting the third protrusion 54, and the limiting portion 61 extends into the slot 4. When the limiting portion 61 retracts into the installation slot 5 and overcomes the elastic force of the elastic member 7, the locking protrusion 63 inserts into the elastic locking groove 55, that is, the self-locking portion 52 and the limiting portion 61 are locked, and the unlocking portion 62 disengages from the third protrusion 54 and extends into the slot 4.

[0044] The root 20 of the blade body 2 is symmetrically provided with a first protrusion 21, a stopper 22, and a second protrusion 23 on both sides from the front end to the rear end. The first protrusion 21 and the second protrusion 23 are arranged at intervals on the side of the root 20, and the concave position between the first protrusion 21 and the second protrusion 23 constitutes the stopper 22. The root 20 is provided with a clearance notch 24 corresponding to the unlocking portion 62. Specifically, the first protrusion 21 is provided with a first guide surface 210, and the first protrusion 21 contacts the limiting portion 61 through the first guide surface 210. The second protrusion 23 is provided with a second guide surface 231 and a third guide surface 232. The second protrusion 23 contacts the limiting portion 61 through the second guide surface 231, and the second protrusion 23 contacts the unlocking portion 62 through the third guide surface 232. Positioning ridges 25 are provided on the top and bottom surfaces of the root portion 20 along the insertion direction of the root portion 20. The positioning ridges 25 avoid the first protrusion 21, the latch 22, and the second protrusion 23. The positioning ridges 25 are inserted into the guide grooves 41 to guide the root portion 20 into the slot 4. In this embodiment, the number and position of the positioning ridges 25 correspond to the guide grooves 41 of the slot 4.

[0045] There are two states between the fan body 2 and the locking device 3.

[0046] The first state is when the locking device 3 locks the fan body 2. (See Figures 10, 6, and 7.) The positioning protrusions 25 are aligned with the insertion guide slots 41, allowing the root 20 to be smoothly inserted into the slot 4. The force on both sides of the root 20 and the corresponding locking device 3 is evenly applied. During the insertion of the root 20, the first protrusion 21 pushes the limiting portion 61 toward the self-locking portion 52 via the first guide surface 210. The limiting portion 61 compresses the elastic member 7, but prevents the locking protrusion 63 from being inserted into the self-locking portion 52. Simultaneously, the limiting portion 61 rotates, disengaging the unlocking portion 62 from the third protrusion 54 and rotating into the clearance notch 24. The root 20 continues to be inserted until the locking device 3 disengages the first protrusion 21. At this point, the elastic member 7 pushes the limiting portion 61 to rotate in the opposite direction and reset. That is, the end of the limiting portion 61 is inserted into the locking position 22, and the limiting portion 61 and the corresponding locking position 22 are mutually restrained. Simultaneously, the unlocking portion 62 retracts into the installation slot 5 and abuts against the third protrusion 54. In this way, the fan blades and the turntable 1 are connected and fixed. The fan blade body 2 moves outward due to external force (such as centrifugal force), and the unlocking portion 62 is restricted by the third protrusion 54, and the rotating part 6 cannot move, that is, the limiting portion 61 remains stuck in the locking position 22, that is, the root 20 is locked in the slot 4.

[0047] The second state: that is, the locking device 3 is released, and the fan body 2 is separated from the turntable 1. Referring to Figures 7-10, when the locking device 3 and the latch 22 are mutually limited, an unlocking gap 9 is left between the root 20 and the inner end surface of the slot 4. The root 20 continues to be inserted into the slot 4, so that the second protrusion 23 pushes the limiting portion 61 to rotate toward the installation slot 5 through the second guide surface 231, that is, the end of the limiting portion 61 is separated from the latch 22, until the locking protrusion 63 of the limiting portion 61 is inserted into the self-locking portion 52, and the elastic force of the elastic member 7 cannot separate the locking protrusion 63 from the self-locking portion 52. At the same time, the limiting portion 61 is actuated to rotate, and the unlocking portion 62 is separated from the third protrusion 54 and rotates to extend into the slot 4 and insert into the clearance notch 24. At this time, the root 20 can be pulled out.

[0048] The root portion 20 moves outward, and the first protrusion 21 passes over the end of the stopper 61 until the third guide surface 232 of the second protrusion 23 abuts the unlocking portion 62. The root portion 20 continues to move outward, and the second protrusion 23 drives the unlocking portion 62 to retract into the installation slot 5 and rotate. This causes the stopper 61 to move toward the slot 4, and the latching protrusion 63 disengages the self-locking portion 52. The elastic force of the elastic member 7 pushes the stopper 61 into the slot 4 until the unlocking portion 62 retracts into the installation slot 5 and abuts the third protrusion 54, thus restoring the rotation member 6. Since the unlocking portion 62 is free from the clearance notch 24, the root portion 20 can now be removed from the slot 4 without restriction.

[0049] The fan blade body 2 and the turntable 1 of the present invention can be installed without using tools, and the operation is simple, easy and fast.

[0050] The second embodiment differs from the first embodiment in that the locking device 3 and the self-locking portion 52 are provided on only one side of the slot 4 of the turntable 1, and the first protrusion 21, the locking portion 22, and the second protrusion 23 are provided on only one side of the root 20 of the corresponding blade body 2, with the other side of the root 20 abutting against the other side of the slot 4. The connection structure between the blade body 2 and the turntable 1 is simpler and less expensive than that of the first embodiment.

[0051] 1 , the present invention further discloses a fan using a quick blade installation structure. The fan includes but is not limited to a ceiling fan, a turbo fan, and the like.

Claims

1. A fan blade quick installation structure, characterized in that: include A rotating disk (1) is provided with a slot (4) on its circumferential surface, and at least one set of movable locking devices (3) and a self-locking portion (52) is provided on the side of the slot (4). The fan blade body (2) has a first convex portion (21), a latch (22) and a second convex portion (23) on the side surface of the root portion (20) of the fan blade body (2) from the front end to the rear end thereof. The locking device (3) has a tendency to move away from the self-locking portion (52) and closer to the root portion (20), and the fan blade and the locking device (3) include the following two states: In the first state, when the fan blade body (2) is connected to the rotating disk (1), the root portion (20) is inserted into the slot (4), and the first protrusion (21) pushes the locking device (3) close to the self-locking portion (52) until the locking device (3) is separated from the first protrusion (21) and is mutually limited with the corresponding locking position (22), and the unlocking portion (62) of the locking device (3) moves with the locking device (3) until it contacts the rotating disk (1), so as to lock the root portion (20) in the slot (4). Second state: when the fan blade body (2) is separated from the rotating disk (1), the root portion (20) continues to be inserted into the slot (4), the second protrusion (23) pushes the locking device (3) to separate from the locking position (22) and locks with the self-locking portion (52), so that the root portion (20) can be separated from the slot (4), and the second protrusion (23) drives the unlocking portion (62) to move as the root portion (20) separates from the slot (4), and the unlocking portion (62) moves to separate the locking device (3) from the self-locking portion (52) and reset.

2. The fan blade quick installation structure according to claim 1 is characterized in that: The locking device (3) comprises a rotating member (6) and an elastic member (7), the rotating member (6) and the rotating disk (1) are rotatably connected, the rotating member (6) extends a limiting portion (61) and the unlocking portion (62), the limiting portion (61) and the corresponding latching position (22) are mutually limited, two ends of the elastic member (7) are respectively in contact with the limiting portion (61) and the rotating disk (1), and the elastic force of the elastic member (7) causes the limiting portion (61) to move away from the self-locking portion (52) until the unlocking portion (62) and the rotating disk (1) are in contact with each other.

3. The fan blade quick installation structure according to claim 2 is characterized in that: The rotating disk (1) is provided with mounting grooves (5) on both sides of the slot (4); the locking device (3) is rotatably arranged in the mounting groove (5); a third protrusion (54) is provided at the mounting groove (5) near the opening of the slot (4); the elastic force of the elastic member (7) has a tendency to cause the unlocking portion (62) and the third protrusion (54) to abut against each other; when the unlocking portion (62) retracts into the mounting groove (5) and abuts against the third protrusion (54), the limiting portion (61) extends into the slot (4).

4. The fan blade quick installation structure according to claim 3 is characterized in that: The mounting groove (5) is provided with the self-locking portion (52), the self-locking portion (52) being an elastic buckle groove (55), and a locking protrusion (63) is provided on the side of the limiting portion (61) facing away from the root portion (20), and when the locking protrusion (63) is inserted into the elastic buckle groove (55), the locking device (3) and the self-locking portion (52) are locked, and when the limiting portion (61) is retracted into the mounting groove (5), the unlocking portion (62) extends into the slot (4).

5. The fan blade quick installation structure according to claim 4 is characterized in that: The mounting groove (5) is provided with a first positioning groove (53), and a second positioning groove (64) is provided on a side of the limiting portion (61) facing away from the root portion (20). The elastic member (7) is a spring, and one end of the elastic member (7) is placed in the first positioning groove (53), and the other end of the elastic member (7) is placed in the second positioning groove (64). The elastic member (7) keeps the limiting portion (61) away from the self-locking portion (52).

6. The fan blade quick installation structure according to claim 4 is characterized in that: The end surface of the turntable (1) is provided with a hollow portion (11) connected to the mounting groove (5), the mounting groove (5) is provided with a positioning stud (51), the rotating member (6) is provided with a through hole (60), the rotating member (6) is inserted into the positioning stud (51) through the through hole (60), the screw (8) and the positioning stud (51) are threadedly connected, the nut of the screw (8) restricts the rotating member (6) on the positioning stud (51), and the rotating member (6) rotates around the positioning stud (51).

7. The fan blade quick installation structure according to claim 2 is characterized in that: The first convex portion (21) is provided with a first guide surface (210), and the first convex portion (21) contacts the limiting portion (61) via the first guide surface (210); the second convex portion (23) is provided with a second guide surface (231) and a third guide surface (232), and the second convex portion (23) contacts the limiting portion (61) via the second guide surface (231), and the second convex portion (23) contacts the unlocking portion (62) via the third guide surface (232).

8. The fan blade quick installation structure according to claim 1 is characterized in that: When the locking device (3) and the locking position (22) are mutually limited, an unlocking gap (9) is left between the root (20) and the inner end surface of the slot (4).

9. The fan blade quick installation structure according to claim 1 is characterized in that: The first convex portion (21) and the second convex portion (23) are arranged at intervals on the side of the root portion (20); the concave portion between the first convex portion (21) and the second convex portion (23) constitutes the locking position (22); the root portion (20) is provided with a clearance notch (24) corresponding to the unlocking portion (62); when the second convex portion (23) locks the locking device (3) and the self-locking portion (52), the unlocking portion (62) is placed in the clearance notch (24).

10. The fan blade quick installation structure according to claim 1, characterized in that: The slot (4) is provided with a guide groove (41) on the side surface along the insertion direction of the root (20), the guide groove (41) avoids the locking device (3), and the corresponding root (20) is provided with a positioning convex strip (25) on the side surface along the insertion direction of the root (20), the positioning convex strip (25) avoids the first convex portion (21), the locking position (22) and the second convex portion (23), and the positioning convex strip (25) is inserted into the guide groove (41) to guide the root (20) to be inserted into the slot (4).

11. The fan blade quick installation structure according to claim 1 is characterized in that: The locking device (3) and the self-locking portion (52) are symmetrically provided on the left and right sides / upper and lower sides of the slot (4), and the first protrusion (21), the locking position (22) and the second protrusion (23) are symmetrically provided on the left and right sides / upper and lower sides of the root (20) of the fan blade body (2) from the front end to the rear end thereof.

12. The fan blade quick installation structure according to claim 1, characterized in that: The locking device (3) and the self-locking portion (52) are provided on one side of the slot (4); the corresponding first protrusion (21), the locking position (22) and the second protrusion (23) are provided on one side of the root (20) of the fan blade body (2); and the other side of the root (20) is in contact with the other side of the slot (4).

13. A fan, characterized in that: It comprises the fan blade quick installation structure as described in any one of claims 1-12.

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