CN220687641U

CN220687641U - Fan head shaking device and electric fan

Info

Publication number: CN220687641U
Application number: CN202321604933.2U
Authority: CN
Inventors: 林芝耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2024-03-29
Anticipated expiration: 2033-06-21

Abstract

The utility model discloses a fan oscillating device, which comprises a shell, a motor, a reduction gear set, an eccentric wheel and an adjusting plate, wherein the motor is arranged on the shell; one end of a transmission shaft of the motor is connected with the fan blade, and the other end of the transmission shaft of the motor is connected with the reduction gear set; the motor and the reduction gear set are fixed in the shell; the top of the shell is provided with a round hole for the driving shaft of the reduction gear set to pass through and a positioning column for installing the adjusting plate; an eccentric cylinder is arranged on the eccentric wheel; the eccentric cylinder is internally provided with a mounting hole for fixing the driving shaft; the adjusting plate is provided with an adjusting groove matched with the eccentric wheel, a connecting hole matched with the positioning column and a strip-shaped adjusting hole corresponding to the limiting shaft of the supporting arm of the fan. The technical scheme has simple structure and can be well applied to the electric fan with smaller volume.

Description

Fan head shaking device and electric fan

Technical Field

The utility model relates to the field of fans, in particular to a fan head shaking device and an electric fan.

Background

The oscillating fan comprises a base, a fan assembly and an oscillating assembly for driving the fan assembly to rotate relative to the base. The oscillating assembly is mostly provided with a motor at the connecting position with the fan assembly, and the fan assembly is driven to oscillate through the rotation of the motor, so that the oscillating reversing function is realized.

Chinese patent document CN201255133Y discloses an electric fan oscillating device, including the connector, fork support, motor and motor shaft, the connector is connected in the rotation of fork support lower extreme, and two fork ends swing joint motors of fork support, its characterized in that: the motor rotating shaft is connected with the upper end shaft of the transmission member through a gear box and drives the shaft to rotate, a concave cavity is formed in the lower end of the transmission member in a different axis mode, the front end of the head-shaking connecting rod is rotationally connected with the upper end of the central shaft, a ball head is arranged at the rear end of the head-shaking connecting rod and is accommodated in the concave cavity in the lower end of the transmission member, and the lower end of the central shaft is fixed on the connecting head.

The technical scheme has the following defects: 1. the structure is more complicated, and the processing cost is higher. 2. The structure is generally used for fans with larger volumes, and cannot meet the design requirements of fans with small volumes.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a fan oscillating device and an electric fan.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a fan oscillating device comprises a shell, a motor, a reduction gear set, an eccentric wheel and an adjusting plate; one end of a transmission shaft of the motor is connected with the fan blade, and the other end of the transmission shaft of the motor is connected with the reduction gear set; the motor and the reduction gear set are fixed in the shell; the top of the shell is provided with a round hole for the driving shaft of the reduction gear set to pass through and a positioning column for installing the adjusting plate; an eccentric cylinder is arranged on the eccentric wheel; the eccentric cylinder is internally provided with a mounting hole for fixing the driving shaft; the adjusting plate is provided with an adjusting groove matched with the eccentric wheel, a connecting hole matched with the positioning column and a strip-shaped adjusting hole corresponding to the limiting shaft of the supporting arm of the fan.

After the technical scheme of the application is adopted, the fan blades and the reduction gear set share one transmission shaft, so that the problem that two independent motors are needed to drive occupied space respectively in the prior art is solved. In the process of driving the speed reduction gear set to rotate by the transmission shaft, the driving shaft is fixed in the mounting hole of the eccentric cylinder, so that the driving shaft of the speed reduction gear set can drive the eccentric wheel to rotate, and further the eccentric wheel is used for driving the adjusting plate to swing left and right by taking the positioning column as the shaft. Because the limiting shaft of the supporting arm is fixed, the limiting shaft can push the whole fan oscillating device to oscillate left and right in the process of oscillating the adjusting plate left and right, and thus the oscillating of the electric fan is realized. The technical scheme has simple structure and lower processing cost, and can be well applied to the electric fan with smaller volume because of smaller volume.

Further improvements include a reduction gear set including a first gear, a second gear, a third gear, a fourth gear, and a fifth gear; the transmission shaft of the motor is fixed on the gear I; the first gear is meshed with the driving wheel of the second gear; the driven teeth of the second gear are meshed with the driving teeth of the third gear; the driven tooth of the third gear is meshed with the driving tooth of the fourth gear; the driven tooth of the gear IV is meshed with the gear V; the gear III and the gear V are arranged on the same installation shaft I on the inner side of the shell; the second gear and the fourth gear are respectively arranged on the second installation shaft and the third installation shaft on the inner side of the shell. The speed of the driving shaft is reduced to a normal horizontal state when the eccentric wheel is driven after the transmission shaft which rotates at a high speed originally is adjusted and converted by means of the first gear, the second gear, the third gear, the fourth gear and the fifth gear.

Further improvement, the reduction gear set also comprises a clutch, and the inner side of the gear V is provided with a mounting groove; an inner gear is arranged on the side wall of the mounting groove; limiting teeth corresponding to the internal gear are arranged on the clutch; the limiting teeth are symmetrically arranged on two sides of the clutch through the elastic plates; the clutch is fixed at the top of installation axle one through the mount pad, and the drive shaft sets up at the top of mount pad. With the adoption of the clutch, the clutch can rotate positively along with the gear five during normal operation. When external force makes the rotation abnormal, for example when child carelessly lifts the fan head or when the internal structure some places card is dead, the clutch can protect the motor and can not card dead and cause the potential safety hazard such as generate heat, and the clutch plays the guard action when the dynamics is big to unsafe promptly.

Further improvement, a slotted hole for extending out the teeth of the second gear and the third gear is arranged at the corresponding position of the shell and the second gear and the third gear. The design of the slot hole plays a role in reducing the volume.

An electric fan adopts the fan oscillating device.

Further improved, the electric fan comprises a base, a supporting arm, a machine head mounting seat and a protective cover; the supporting arm is fixed on the base; the machine head mounting seat is arranged at the top of the supporting arm through a rotating shaft; the limiting shaft of the supporting arm is arranged in the strip-shaped adjusting hole; the fan blade is fixed at one end of a transmission shaft of the motor, and the fan blade is sealed in the fan blade by the protective cover and then fixed on the machine head mounting seat. By adopting the design, the volume of the fan can be reduced as much as possible.

Further improved, a control board and a power supply are arranged in the base, a switch is arranged on the base, and the switch is respectively and electrically connected with the power supply and the control board. The power supply is used for supplying power to the electric fan, and the switch is used for switching on or off the power supply.

Further improvement, the power supply is a chargeable power supply, and the rear end of the base is provided with a USB charging interface; the USB charging interface is electrically connected with the control board. The USB charging interface is convenient to charge an internal power supply. So as to be used for the second time and realize the purpose of energy saving.

Drawings

Fig. 1 is an exploded schematic view of a fan head-shaking device.

Fig. 2 is an exploded view of the fan head shaking device and the support arm.

FIG. 3 is a schematic diagram of a reduction gear set.

Fig. 4 is a perspective view of an electric fan.

Fig. 5 is a perspective view of a second electric fan.

Detailed Description

The preferred embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, a fan head shaking device includes a housing 1, a motor 2, a reduction gear set 3, an eccentric 4, and an adjusting plate 5.

One end of a transmission shaft of the motor is connected with the fan blade, and the other end of the transmission shaft of the motor is connected with the reduction gear set; the motor and the reduction gear set are fixed in the shell; the top of the shell is provided with a round hole 6 for the driving shaft of the reduction gear set to pass through and a positioning column 7 for installing an adjusting plate; the eccentric wheel is provided with an eccentric cylinder 8; the eccentric cylinder is internally provided with a mounting hole for fixing the driving shaft; the adjusting plate is provided with an adjusting groove 9 matched with the eccentric wheel, a connecting hole 10 matched with the positioning column and a strip-shaped adjusting hole 11 corresponding to a limit shaft 28 of a supporting arm of the fan. The adjusting groove is U-shaped.

The reduction gear set comprises a first gear 12, a second gear 13, a third gear 14, a fourth gear 15 and a fifth gear 16; the transmission shaft of the motor is fixed on the gear I; the first gear is meshed with the driving wheel of the second gear; the driven teeth of the second gear are meshed with the driving teeth of the third gear; the driven tooth of the third gear is meshed with the driving tooth of the fourth gear; the driven tooth of the gear IV is meshed with the gear V; the gear III and the gear V are arranged on the same installation shaft I on the inner side of the shell; the second gear and the fourth gear are respectively arranged on the second installation shaft and the third installation shaft on the inner side of the shell. The corresponding part of the shell and the second and third gears is provided with a slot 23 for the teeth of the second and third gears to extend out.

The reduction gear set also comprises a clutch 17, and the inner side of the gear five is provided with a mounting groove 18; an inner gear 19 is arranged on the side wall of the mounting groove; the clutch is provided with limiting teeth 20 corresponding to the internal gear; the limiting teeth are symmetrically arranged on two sides of the clutch through the elastic plates; the clutch is fixed on the top of the first mounting shaft by a mounting seat 21, and a driving shaft 22 is arranged on the top of the mounting seat.

An electric fan comprises a base 24, a supporting arm 25, a machine head mounting seat 26, a fan head shaking device and a protective cover 27; the supporting arm is fixed on the base; the machine head mounting seat is arranged at the top of the supporting arm through a rotating shaft; the fan oscillating device is arranged in the machine head mounting seat, and the limiting shaft of the supporting arm penetrates through the machine head mounting seat and then is arranged in the strip-shaped adjusting hole; the fan blade is fixed at one end of a transmission shaft of the motor, and the fan blade is sealed in the fan blade by the protective cover and then fixed on the machine head mounting seat. A control board and a power supply are arranged in the base, a switch 29 is arranged on the base, and the switch is respectively and electrically connected with the power supply and the control board. The power supply is a chargeable power supply, and the rear end of the base is provided with a USB charging interface 30; the USB charging interface is electrically connected with the control board.

For a better description of the technical solutions of the present application, the use of the present solution will now be further described.

As shown in fig. 4 and 5, the power supply supplies power to the control panel, the controller outputs an instruction to the motor, the motor rotates forward to drive the fan to rotate, the electric fan is in a normal working state, the other end of the motor is connected with the first gear, the motor rotates to drive the first gear to rotate, the first gear rotates to drive the second gear to rotate, the second gear rotates to drive the third gear to rotate, the third gear rotates to drive the fourth gear to rotate, the fourth gear rotates to drive the fifth gear to rotate, the fifth gear rotates to drive the clutch to rotate, the clutch rotates to drive the driving shaft to rotate, further rotation of the eccentric wheel is achieved, pushing force is applied to side walls on two sides of the regulating groove in the rotation process of the eccentric wheel, and the positioning column is used as a shaft to swing left and right after the side walls are stressed. Because the spacing axle at support arm top is motionless, and spacing axle sets up in the strip regulation hole again, consequently when the regulating plate takes place the side-to-side swing, receive the resistance effect of spacing axle, the aircraft nose mount pad can be controlled and rotate. Thereby realizing the shaking of the electric fan.

The above embodiments are merely preferred embodiments of the present utility model, but the present utility model is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model should be made in equivalent ways within the scope of the present utility model.

Claims

1. The fan head shaking device is characterized by comprising a shell (1), a motor (2), a reduction gear set (3), an eccentric wheel (4) and an adjusting plate (5); one end of a transmission shaft of the motor is connected with the fan blade, and the other end of the transmission shaft of the motor is connected with the reduction gear set; the motor and the reduction gear set are fixed in the shell; the top of the shell is provided with a round hole (6) for the driving shaft of the reduction gear set to pass through and a positioning column (7) for installing an adjusting plate; an eccentric cylinder (8) is arranged on the eccentric wheel; the eccentric cylinder is internally provided with a mounting hole for fixing the driving shaft; the adjusting plate is provided with an adjusting groove (9) matched with the eccentric wheel, a connecting hole (10) matched with the positioning column and a strip-shaped adjusting hole (11) corresponding to the limiting shaft of the supporting arm of the fan.

2. The fan head apparatus of claim 1, wherein the reduction gear set comprises a first gear (12), a second gear (13), a third gear (14), a fourth gear (15), and a fifth gear (16); the transmission shaft of the motor is fixed on the gear I; the first gear is meshed with the driving wheel of the second gear; the driven teeth of the second gear are meshed with the driving teeth of the third gear; the driven tooth of the third gear is meshed with the driving tooth of the fourth gear; the driven tooth of the gear IV is meshed with the gear V; the gear III and the gear V are arranged on the same installation shaft I on the inner side of the shell; the second gear and the fourth gear are respectively arranged on the second installation shaft and the third installation shaft on the inner side of the shell.

3. The fan head-shaking device according to claim 2, characterized in that the reduction gear set further comprises a clutch (17), the inner side of the fifth gear being provided with a mounting groove (18); an inner gear (19) is arranged on the side wall of the mounting groove; the clutch is provided with limit teeth (20) corresponding to the internal gear; the limiting teeth are symmetrically arranged on two sides of the clutch through the elastic plates; the clutch is fixed at the top of the first installation shaft through an installation seat (21), and a driving shaft (22) is arranged at the top of the installation seat.

4. A fan head unit according to claim 3, characterized in that the housing is provided with slots (23) corresponding to the second and third gears for the teeth of the second and third gears to extend.

5. An electric fan, characterized in that a fan oscillating device according to any one of claims 1 to 4 is used.

6. An electric fan according to claim 5, characterized by comprising a base (24), a support arm (25), a handpiece mount (26) and a protective cover (27); the supporting arm is fixed on the base; the machine head mounting seat is arranged at the top of the supporting arm through a rotating shaft; the limiting shaft (28) of the supporting arm is arranged in the strip-shaped adjusting hole; the fan blade is fixed at one end of a transmission shaft of the motor, and the fan blade is sealed in the fan blade by the protective cover and then fixed on the machine head mounting seat.

7. An electric fan as claimed in claim 6, characterized in that a control board and a power supply are provided in the base, and a switch (29) is provided on the base, the switch being electrically connected to the power supply and the control board, respectively.

8. The electric fan according to claim 7, characterized in that the power supply is a rechargeable power supply, and the rear end of the base is provided with a USB charging interface (30); the USB charging interface is electrically connected with the control board.