Folding fan capable of automatically stretching

Abstract

The utility model discloses a foldable fan capable of automatically stretching, which belongs to the technical field of electric fans, and comprises a base shell and a fan head, the upper side wall of the base shell is provided with a storage groove, the inner wall of one end of the storage groove is rotatably connected with a multi-section telescopic rod through a first rotating shaft, a folding mechanism is arranged in the base shell, and the fan head is connected with the storage groove through a second rotating shaft. One end of the folding mechanism is hinged to one side of the multi-section telescopic rod, the upper end of the multi-section telescopic rod is fixedly connected with a rotating mechanism, the upper end of the rotating mechanism is rotationally connected with an arc-shaped frame through a damping rotating shaft, and one side of the arc-shaped frame is fixedly connected with an angle adjusting mechanism; and one end of the angle adjusting mechanism penetrates through the arc-shaped frame and is fixedly connected with the fan head. The folding mechanism is arranged to achieve folding or stretching of the device, the angle adjusting mechanism is arranged to achieve inclination angle adjustment of the fan head, the rotating mechanism is arranged to achieve rotation adjustment of the fan head, adjustment and use are convenient, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electric fans, in particular to a foldable fan which can be automatically extended. Background Art

[0002] Electric fans are essential appliances in the hot summer. They use electric motors to drive the fan blades to rotate to accelerate the circulation of air. They are mainly used for cooling down and circulating air. They are widely used in homes, classrooms, offices, shops, hospitals, hotels and other places. Among them, floor fans have large air volume and low noise as their main characteristics. In the hot summer, they are good for indoor ventilation, heatstroke prevention and cooling, and improving the environment.

[0003] In a Chinese patent for an automatically extendable folding fan (patent number: CN218407882U), the device includes a base and a fan head installed on the base, and an extending and folding mechanism is arranged between the fan head and the base; the extending and folding mechanism includes a first worm gear, a second worm gear and a driving motor, the first worm gear and the second worm gear are symmetrically and movably arranged in a storage groove, a first worm gear is connected to the lower part of the first worm gear, a second worm gear is connected to the lower part of the second worm gear, the right end of the second worm gear is connected to the left end of the first worm gear, and the output end of the driving motor is connected to the right end of the first worm gear. The device is provided with an extending and folding mechanism between the base and the fan head, and the driving of the driving motor can realize the automatic extension or contraction of the extending and folding mechanism, realize the automatic adjustment of the height of the fan head, and the storage is convenient, and the minimum storage height can be achieved. However, the fan head of the device cannot be adjusted for tilt angle and rotation angle, and is not convenient to use and practical. Utility Model Content

[0004] The purpose of the utility model is to provide a foldable fan which can be automatically extended to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatically extendable folding fan, comprising a base shell and a fan head, the upper side wall of the base shell is provided with a storage groove, the inner wall of one end of the storage groove is rotatably connected to a multi-section telescopic rod through a first rotating shaft, a folding mechanism is provided in the base shell, one end of the folding mechanism is hingedly connected to one side of the multi-section telescopic rod, the upper end of the multi-section telescopic rod is fixedly connected to a rotating mechanism, the upper end of the rotating mechanism is rotatably connected to an arc frame through a damping rotating shaft, one side of the arc frame is fixedly connected to an angle adjustment mechanism, one end of the angle adjustment mechanism passes through the arc frame and is fixedly connected to the fan head, one side of the base shell is fixedly connected to an intelligent voice controller, and the intelligent voice controller is electrically connected to the fan head, the folding mechanism, the rotating mechanism and the angle adjustment mechanism respectively;

[0006] The angle adjustment mechanism includes a cover shell fixed on one side of the arc frame, the lower end of the cover shell is fixedly connected to a first motor, the main shaft end of the first motor passes through the cover shell and is fixedly connected to a worm, a rotating shaft is inserted into the side wall of the arc frame and is rotatably connected, one end of the rotating shaft is fixedly connected to a worm wheel meshing with the worm, and one end of the rotating shaft is fixedly connected to the fan head.

[0007] As a further solution of the utility model: wherein, the folding mechanism includes a second motor fixed at one end of the base shell, the main shaft end of the second motor passes through the base shell and is fixedly connected to a screw rod, a nut block is threadedly connected to the screw rod, the upper end of the nut block is hingedly connected to a pull rod, the inner bottom wall of the storage groove is provided with a sliding opening connected to the base shell, one end of the pull rod passes through the sliding opening and is hingedly connected to one side of the multi-section telescopic rod.

[0008] As a further solution of the utility model: wherein, a limiting rod is fixedly connected in the base shell, and the limiting rod is arranged to penetrate the side wall of the nut block.

[0009] As a further solution of the utility model: wherein, the rotating mechanism includes a casing fixedly connected to the upper end of the multi-section telescopic rod, a third motor is fixedly connected to one side of the casing, a main shaft end of the third motor passes through the casing and is fixedly connected to the first bevel gear, the inner bottom wall of the casing is rotatably connected to a rotating rod through a bearing seat, a second bevel gear meshing with the first bevel gear is fixedly connected to the rotating rod, and the upper end of the rotating rod is fixedly connected to the damping shaft.

[0010] As a further solution of the present invention: wherein, the outer wall of the rotating rod and the inner wall of the through hole of the second bevel gear are fixedly connected by welding.

[0011] As a further solution of the utility model: wherein, the side wall of the arc-shaped frame is provided with a through hole, and the through hole is rotatably connected to the outer side wall of the rotating shaft through a bearing member.

[0012] As a further solution of the utility model: wherein, one end of the arc frame away from the angle adjustment mechanism is fixedly connected to the fan head via a second rotating shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This automatically extendable folding fan is provided with an angle adjustment mechanism to start the first motor. Due to the meshing of the worm and the worm wheel, the fan head fixed to the rotating shaft is driven to rotate to adjust the tilt angle. The adjustment is convenient, the positioning is accurate, and the practical effect is good.

[0015] 2. This automatically extendable folding fan sets a folding mechanism, starts the second motor, and drives the screw rod to rotate. Since the screw rod is threadedly connected to the nut block, the nut block is forced to move, which can pull the pull rod to move and swing, and then pull the multi-section telescopic rod to fold and swing, so as to realize the automatic folding or extending operation of the device. The structure is reliable and the support is stable.

[0016] 3. The automatically extendable folding fan starts the third motor by setting a rotating mechanism. The first bevel gear is meshed with the second bevel gear, thereby driving the rotating rod to rotate, and the fan head can be driven to rotate and adjust in the horizontal direction, which is convenient to adjust and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional enlarged structural diagram of the fan head in the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of a front cross-sectional structure;

[0020] Figure 4 It is a front view cross-sectional structure diagram of the base shell in the utility model.

[0021] The corresponding relationship between the various figure labels and component names in the figure is as follows:

[0022] 1. Base shell; 2. Fan head; 3. Storage slot; 4. Multi-section telescopic rod; 5. Damping shaft; 6. Arc frame; 7. Intelligent voice controller; 8. Cover; 9. First motor; 10. Worm; 11. Rotating shaft; 12. Worm gear; 13. Second motor; 14. Screw; 15. Nut block; 16. Pull rod; 17. Slide; 18. Limit rod; 19. Casing; 20. Third motor; 21. First bevel gear; 22. Rotating rod; 23. Second bevel gear. DETAILED DESCRIPTION

[0023] See also Figures 1 to 4In the practical embodiment, an automatically extendable folding fan comprises a base shell 1 and a fan head 2. A storage groove 3 is provided on the upper side wall of the base shell 1. The inner wall at one end of the storage groove 3 is rotatably connected to a multi-section telescopic rod 4 through a first rotating shaft, and the height adjustment range is wider. It is a prior art device. A folding mechanism is provided in the base shell 1. One end of the folding mechanism is hingedly connected to one side of the multi-section telescopic rod 4. The upper end of the multi-section telescopic rod 4 is fixedly connected to a rotating mechanism. The upper end of the rotating mechanism is rotatably connected to an arc frame 6 through a damping rotating shaft 5. The arc frame 6 can be folded and swung for storage. One side of the arc frame 6 is fixedly connected to an angle adjustment mechanism. One end of the angle adjustment mechanism passes through the arc frame 6 and is fixedly connected to the fan head 2. One side of the base shell 1 is fixedly connected to an intelligent voice controller 7. The intelligent voice controller 7 is electrically connected to the fan head 2, the folding mechanism, the rotating mechanism and the angle adjustment mechanism respectively. It is easy to operate and has an external power supply. The circuit involved is a prior art, and a person skilled in the art can fully implement it without further explanation.

[0024] The angle adjustment mechanism includes a cover shell 8 fixed to one side of the arc frame 6, and a first motor 9 is fixedly connected to the lower end of the cover shell 8. The main shaft end of the first motor 9 passes through the cover shell 8 and is fixedly connected to a worm 10. A rotating shaft 11 is inserted into the side wall of the arc frame 6 and is rotatably connected. One end of the rotating shaft 11 is fixedly connected to a worm wheel 12 meshing with the worm 10. One end of the rotating shaft 11 is fixedly connected to the fan head 2. When the first motor 9 is started, the worm 10 is meshed with the worm wheel 12, thereby driving the fan head 2 fixed to the rotating shaft 11 to rotate to adjust the tilt angle. The adjustment is convenient, the positioning is accurate, and the practical effect is good.

[0025] like Figure 1 and Figure 4 As shown: the folding mechanism includes a second motor 13 fixed at one end of the base shell 1, the main shaft end of the second motor 13 passes through the base shell 1 and is fixedly connected to a screw rod 14, a nut block 15 is threadedly connected to the screw rod 14, the upper end of the nut block 15 is hingedly connected to a pull rod 16, and the inner bottom wall of the storage groove 3 is provided with a sliding opening 17 connected to the base shell 1, one end of the pull rod 16 passes through the sliding opening 17 and is hingedly connected to one side of the multi-section telescopic rod 4, the second motor 13 is started to work, and the screw rod 14 is driven to rotate. Since the screw rod 14 is threadedly connected to the nut block 15, at this time, the nut block 15 is forced to move, which can pull the pull rod 16 to move and swing, and then pull the multi-section telescopic rod 4 to fold and swing, so as to realize the automatic folding or extension operation of the device, and the structure is reliable and the support is stable.

[0026] like Figure 4 As shown: a limiting rod 18 is fixedly connected in the base shell 1 , and the limiting rod 18 is arranged to penetrate the side wall of the nut block 15 , so as to limit the axial rotation of the nut block 15 .

[0027] like Figure 3As shown: the rotating mechanism includes a casing 19 fixedly connected to the upper end of the multi-section telescopic rod 4, a third motor 20 is fixedly connected to one side of the casing 19, the main shaft end of the third motor 20 passes through the casing 19 and is fixedly connected to the first bevel gear 21, the inner bottom wall of the casing 19 is rotatably connected to a rotating rod 22 through a bearing seat, and a second bevel gear 23 meshing with the first bevel gear 21 is fixedly connected to the rotating rod 22, and the upper end of the rotating rod 22 is fixedly connected to the damping shaft 5. When the third motor 20 is started, the first bevel gear 21 is meshed with the second bevel gear 23, thereby driving the rotating rod 22 to rotate, which can drive the fan head 2 to rotate and adjust in the horizontal direction, and the adjustment is convenient.

[0028] like Figure 3 As shown, the outer wall of the rotating rod 22 and the inner wall of the through hole of the second bevel gear 23 are fixedly connected by welding, and the connection is firm.

[0029] like Figure 3 As shown, a through hole is opened on the side wall of the arc frame 6, and the through hole is rotatably connected to the outer side wall of the rotating shaft 11 through a bearing member, so as to facilitate the rotation of the rotating shaft 11.

[0030] like Figure 2 As shown: one end of the arc frame 6 away from the angle adjustment mechanism is fixedly connected to the fan head 2 through the second rotating shaft, which can support the rotation of the fan head 2.

[0031] Working principle: When using this device, start the first motor 9 to work. Since the worm 10 is meshed with the worm wheel 12, it drives the fan head 2 fixed to the rotating shaft 11 to rotate to adjust the inclination angle. The adjustment is convenient to use, the positioning is accurate, and the practical effect is good. Start the third motor 20 to work. Since the first bevel gear 21 is meshed with the second bevel gear 23, it drives the rotating rod 22 to rotate, which can drive the fan head 2 to rotate and adjust in the horizontal direction. The adjustment is convenient to use. Secondly, start the second motor 13 to work and drive the screw rod 14 to rotate. Since the screw rod 14 is threadedly connected to the nut block 15, at this time, the nut block 15 is forced to move, and the pull rod 16 can be pulled to move and swing, and then the multi-section telescopic rod 4 is pulled to fold and swing, so as to realize the automatic folding or extension operation of this device. The structure is reliable and the support is stable.

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatically extendable folding fan, comprising a base shell (1) and a fan head (2), characterized in that: The upper side wall of the base shell (1) is provided with a storage groove (3), and the inner wall of one end of the storage groove (3) is rotatably connected to a multi-section telescopic rod (4) through a first rotating shaft. A folding mechanism is provided in the base shell (1), and one end of the folding mechanism is hingedly connected to one side of the multi-section telescopic rod (4). The upper end of the multi-section telescopic rod (4) is fixedly connected to a rotating mechanism, and the upper end of the rotating mechanism is rotatably connected to an arc frame (6) through a damping rotating shaft (5). One side of the arc frame (6) is fixedly connected to an angle adjustment mechanism, and one end of the angle adjustment mechanism passes through the arc frame (6) and is fixedly connected to the fan head (2). One side of the base shell (1) is fixedly connected to an intelligent voice controller (7), and the intelligent voice controller (7) is electrically connected to the fan head (2), the folding mechanism, the rotating mechanism and the angle adjustment mechanism respectively. The angle adjustment mechanism comprises a cover shell (8) fixed on one side of the arc frame (6); a first motor (9) is fixedly connected to the lower end of the cover shell (8); a main shaft end of the first motor (9) passes through the cover shell (8) and is fixedly connected to a worm (10); a rotating shaft (11) is inserted into and rotatably connected to the side wall of the arc frame (6); one end of the rotating shaft (11) is fixedly connected to a worm wheel (12) meshing with the worm (10); and one end of the rotating shaft (11) is fixedly connected to the fan head (2).

2. The automatically extendable folding fan according to claim 1, characterized in that: The folding mechanism includes a second motor (13) fixed at one end of the base shell (1), the main shaft end of the second motor (13) passes through the base shell (1) and is fixedly connected to a screw rod (14), a nut block (15) is threadedly connected to the screw rod (14), the upper end of the nut block (15) is hingedly connected to a pull rod (16), the inner bottom wall of the storage groove (3) is provided with a sliding opening (17) connected to the base shell (1), one end of the pull rod (16) passes through the sliding opening (17) and is hingedly connected to one side of the multi-section telescopic rod (4).

3. The automatically extendable folding fan according to claim 2, characterized in that: A limiting rod (18) is fixedly connected in the base shell (1), and the limiting rod (18) is arranged to penetrate the side wall of the nut block (15).

4. The automatically extendable folding fan according to claim 1, characterized in that: The rotating mechanism comprises a casing (19) fixedly connected to the upper end of the multi-section telescopic rod (4); a third motor (20) is fixedly connected to one side of the casing (19); a main shaft end of the third motor (20) passes through the casing (19) and is fixedly connected to a first bevel gear (21); an inner bottom wall of the casing (19) is rotatably connected to a rotating rod (22) via a bearing seat; a second bevel gear (23) meshingly connected to the first bevel gear (21) is fixedly connected to the rotating rod (22); and an upper end of the rotating rod (22) is fixedly connected to the damping rotating shaft (5).

5. The automatically extendable folding fan according to claim 4, characterized in that: The outer wall of the rotating rod (22) and the inner wall of the through hole of the second bevel gear (23) are fixedly connected by welding.

6. The automatically extendable folding fan according to claim 1, characterized in that: A through hole is provided on the side wall of the arc-shaped frame (6), and the through hole is rotatably connected to the outer side wall of the rotating shaft (11) via a bearing member.

7. The automatically extendable folding fan according to claim 1, characterized in that: One end of the arc frame (6) away from the angle adjustment mechanism is fixedly connected to the fan head (2) via a second rotating shaft.

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