TWM516660U - Electric fan - Google Patents

Description

Electric fan

This creation is related to electric fans, especially an electric fan in which the fan shaft can be rotated universally to expand the airflow range.

Pressing, the electric fan is driven by the motor to drive the rotating shaft, thereby driving the fan blades provided on the rotating shaft to rotate to generate airflow. As shown in FIG. 9, the conventional electric fan 9 has a motor 91 extending from a rotating shaft 92, and a blade 93 is provided at the end of the rotating shaft 92. However, the rotating shaft 92 is directly extended by the motor 91, and drives the fan blade 93 to rotate at a fixed position, so that the generated airflow is only blown out in the same direction, and has a disadvantage of a small blowing range; even with an electric fan The movement of the head is expanding and the scope of the Buddha is expanded. However, there are still limitations and thus needs to be improved.

The main purpose of the present invention is to provide an electric fan whose fan shaft is relatively inclined with respect to the motor drive shaft and driven by the motor drive shaft, and then rotates the rotary shaft to drive the fan shaft to rotate the fan shaft relative to the motor shaft. Expand the range of the airflow generated by the fan blades.

In order to achieve the foregoing objective, the present invention provides an electric fan including: a motor having a drive shaft; a turntable pivotally disposed at one end of the motor, the turntable having a shaft pivoted thereon, the fan shaft And the driving shaft is disposed in a relatively oblique manner, and a connecting member is disposed between the driving shaft and the fan shaft for driving the fan shaft, and the rotating wheel is composed of The power unit is driven to drive the fan shaft to rotate around the drive shaft; a blade is disposed on the fan shaft and driven by the fan shaft.

The above objects and advantages of the present invention are not to be understood in detail from the detailed description and the accompanying drawings.

11‧‧‧

111‧‧‧ front side

112‧‧‧ Back side

12‧‧‧ bracket

13‧‧‧ shaft seat

14‧‧‧ shaft

15‧‧‧ cam

16‧‧‧ Connecting rod

2‧‧‧Motor

21‧‧‧Drive shaft

22‧‧‧ first end

23‧‧‧ second end

3‧‧‧ Turntable

31‧‧‧Perforation

32‧‧‧ housing

33‧‧‧Uplift

34‧‧‧ openings

35‧‧‧First tooth

36‧‧‧ external teeth

4‧‧‧ fan shaft

41‧‧‧ fan leaves

5‧‧‧Connecting parts

51‧‧‧ eighth gear

52‧‧‧ninth gear

6‧‧‧First transmission

61‧‧‧First lever

62‧‧‧First linkage

63‧‧‧First gear

64‧‧‧second gear

65‧‧‧ Third gear

66‧‧‧ Gear shaft

67‧‧‧fourth gear

7‧‧‧Second transmission

71‧‧‧Second drawbar

72‧‧‧Second linkage

73‧‧‧ fifth gear

74‧‧‧ sixth gear

75‧‧‧ seventh gear

8‧‧‧Servo motor

81‧‧‧ drive gear

9‧‧‧Electric fan

91‧‧‧Motor

92‧‧‧ shaft

93‧‧‧ fan leaves

1 is a perspective view of a first embodiment of the creation; FIG. 2 is a perspective exploded view of the first embodiment of the creation; FIG. 3 is a perspective view of another perspective of the first embodiment of the creation; FIG. 5 is a schematic side view of the second embodiment of the present invention; FIG. 7 and FIG. 7 are schematic diagrams showing the action state of the first embodiment of the creation; FIG. FIG. 9 is a perspective exploded view of a second embodiment of the present invention; FIG. 10 is a schematic plan view of a conventional structure.

Please refer to FIG. 1 to FIG. 3 , which is an electric fan provided by the present invention, which has a body 11 defining a front side 111 and a rear side 112 , wherein the rear side 112 is provided with a Motor 2. The motor 2 extends with a drive shaft 21 having a first end 22 and a second end 23, wherein the first end 22 extends through the base 11 and extends out of the front side 111, and the second The end 23 extends toward the rear of the seat body 1 and has a thread.

The front side 111 of the base 11 is provided with a rotatable turntable 3, and a center of the turntable 3 is provided with a through hole 31 for the drive shaft. The first end 22 of the 21 extends. A fixed portion is fixed on the turntable 3, and the fixed portion is pivotally provided with a shaft 4, and the fan shaft 4 is connected to a blade 41. In the embodiment, the limiting portion is a casing 32. A ridge portion 33 is disposed on the top surface of the ridge portion 33, and an opening 34 is defined in the top surface of the ridge portion 33. The fan shaft 4 is disposed in the ridge portion 33 and is pivoted from the opening portion 34 and extends from the opening 34. . The ridge portion 33 extends in a direction oblique to the first end 22 of the drive shaft 21 such that the opening 34 faces in a direction that is relatively skewed to the first end 22 of the drive shaft 21, so that the fan shaft 4 is opposite to the shaft shaft 4 The first end 22 of the drive shaft 21 is skewed. The connecting rod 5 is connected to the first end 22 of the driving shaft 21 by a connecting member 5; in the embodiment, the connecting member 5 is a flexible tube body, the two ends of which are fixed to the same The fan shaft 4 and the first end 22 of the drive shaft 21, by the connecting member 5, cause the drive shaft 21 to drive the fan shaft 4 to rotate synchronously, thereby driving the blade 41 to rotate to generate airflow. During the synchronous rotation of the fan shaft 4, the fan shaft 4 is subjected to the opening 34 of the housing 32, and the connecting member 5 has deformable flexibility, so that the fan shaft 4 can be The drive shaft 21 drives the rotation to drive the blade 41 to rotate.

The turntable 3 is driven by a power unit, and is further rotated about the drive shaft 21 on the base 11. In the embodiment, as shown in FIGS. 3 and 4, the power unit includes the drive of the motor 2. a second end 23 of the shaft 21 and a first transmission mechanism 6 connected to the second end. The first transmission mechanism 6 is disposed on the rear side 112 of the base body 11 and is a gear transmission group formed by a plurality of gears, including a first pull rod 61, the first pull rod 61 A first linking member 62 and a first gear 63 are disposed. The first gear 63 meshes with a second gear 64. A third gear 65 is coaxially disposed with the second gear 64, and a gear shaft 66 is connected at one end. The third gear 65 has the other end extending to the front side 111 of the base 11 and is provided with a fourth gear 67. As shown in FIG. 1 , the periphery of the turntable 3 is provided with an external tooth portion 35, and the fourth gear is provided. 67 engages the tooth portion 35 outside the turntable 3. The first linkage 62 is also a gear and is engaged with the second end 23 of the drive shaft 21, thereby transmitting the rotation of the drive shaft 21 to rotate the turntable 3.

Another second embodiment of the power unit, as shown in FIG. 5, includes a servo motor 8 for fixing the rear side 112 of the base body 11 and a drive gear 81 driven by the servo motor 8, the turntable 3 The peripheral edge is provided with a tooth portion 36 that meshes with the drive gear 81, whereby the turntable 3 is driven to rotate by the servo motor 8.

When the turntable 3 is rotated, as shown in Figs. 6 and 7, the casing 32 is also simultaneously driven by the turntable 3. Since the fan shaft 4 is restrained by the opening 34 of the raised portion 33, the fan shaft 4 is driven by the raised portion 33 to rotate about the first end 22 of the drive shaft 21. By the above operation, the blade 41 will move synchronously with the fan shaft 4, and thus the direction in which the airflow is generated will change as the fan shaft 4 rotates relative to the drive shaft 21, thereby expanding its blowing. range.

On the other hand, in the embodiment, as shown in FIG. 4, the first pull rod 61 can be pulled to disengage the first link member 62 from the second end 23 of the drive shaft 21, thereby driving the drive shaft. 21 can't drive the first pass The moving mechanism 6 thus stops the rotation of the turntable 3, so that the fan shaft 4 does not rotate relative to the drive shaft 21, thereby fixing the blowing direction of the airflow generated by the blade 41.

Furthermore, as shown in FIG. 8 , the electric fan of the present invention further includes a bracket 12 having a shaft seat 13 , and the motor 2 is pivotally mounted to the shaft seat 13 by a shaft 14 . Further, the second end 23 of the drive shaft 21 is connected to a second transmission mechanism 7, and the second transmission mechanism 7 is connected to a cam 15, and the shaft base 13 and the cam 15 are connected by a connecting rod 16. The second transmission mechanism 7 is a gear transmission group formed by a plurality of gears as shown in FIGS. 3 and 4, and includes a second pull rod 71. The second pull rod 71 is provided with a second linkage member 72 (here, a a second gear 23 is engaged with the second end 23 of the drive shaft 21, and a fifth gear 73 is disposed at a bottom end of the second rod 71, and a sixth gear 74 and a seventh gear are sequentially connected by the fifth gear 73. 75, and the seventh gear 75 is coupled to the cam 15.

With the above configuration, the second end 23 of the drive shaft 21 can drive the cam 15 to rotate via the second transmission mechanism 7, and the motor 2 can be driven to swing back and forth through the link 16 . On the other hand, in the embodiment, the second pull rod 71 can be pulled to disengage the second link member 72 from the second end 23 of the drive shaft 21, thereby preventing the drive shaft 21 from driving the second drive. The mechanism 7 thus stops the rotation of the cam 15, so that the motor 2 does not cause an operation of swinging left and right.

The second embodiment of the present invention is shown in FIG. 9. In the embodiment, the connecting member is an eighth gear 51 and a meshing body. A combination of the ninth gear 52; wherein the eighth gear 51 is disposed at the first end 22 of the drive shaft 21, and the ninth gear 52 is disposed on the fan shaft 4. Accordingly, the first end 22 of the drive shaft 21 transmits the rotation of the eighth gear 51 and the ninth gear 52 to drive the fan shaft 4 to rotate synchronously, thereby achieving the same action as the first embodiment. efficacy.

However, the disclosure of the above embodiments is intended to illustrate the present invention and is not intended to limit the present invention, so the replacement of equivalent elements should still be within the scope of this creation.

In summary, it can be made clear to the skilled person that the creation can achieve the aforementioned objectives, and it has already met the requirements of the Patent Law and submitted an application according to law.

11‧‧‧

111‧‧‧ front side

2‧‧‧Motor

21‧‧‧Drive shaft

22‧‧‧ first end

23‧‧‧ second end

3‧‧‧ Turntable

31‧‧‧Perforation

32‧‧‧ housing

33‧‧‧Uplift

34‧‧‧ openings

35‧‧‧ external teeth

4‧‧‧ fan shaft

41‧‧‧ fan leaves

5‧‧‧Connecting parts

6‧‧‧First transmission

66‧‧‧ Gear shaft

67‧‧‧fourth gear

7‧‧‧Second transmission

Claims (9)

An electric fan includes: a motor extending from a drive shaft; a turntable pivotally disposed at one end of the motor, the turntable having a shaft pivoted thereon, the fan shaft being relatively skewed with the drive shaft Provided, and a connecting member is arranged between the driving shaft and the fan shaft for driving the fan shaft, and the rotating wheel is driven by a power device to drive the fan shaft to rotate around the driving shaft; a blade is provided On the fan shaft, and driven by the fan shaft. The electric fan according to claim 1, wherein one end of the motor is fixed with a body, the turntable is pivotally mounted on the base and driven to rotate by the power device; the turntable has a restriction portion, and the restriction portion is The connecting rod is disposed and the fan shaft is pivoted, and the restricting portion limits the shaft to be relatively inclined with the driving shaft. The electric fan of claim 2, wherein the drive shaft of the motor has a first end and a second end, the first end extends through the base body and the turntable to drive the fan shaft, and the power unit a second end of the drive shaft of the motor and a first gear connected to the second end, and the circumference of the turntable is provided with a first tooth portion, and the second end of the drive shaft is provided with a second tooth portion; The first transmission mechanism includes a plurality of intermeshing gears, one end of which is engaged with the first tooth portion of the turntable, and the other end of which is engaged with the second tooth portion of the drive shaft. The electric fan according to claim 2, wherein the power device comprises a servo motor fixed to one side of the seat body and driven by the servo motor a drive gear, the periphery of the turntable is provided with an outer tooth portion that meshes with the drive gear. The electric fan according to claim 3, wherein the restricting portion is a casing and is provided with an opening, wherein the connecting body is provided with the connecting member, and the opening faces in a direction oblique to the driving shaft; the fan shaft pivot Located in the opening and extending the opening. The electric fan according to claim 5, wherein the connecting member is a flexible tubular body, and the two ends are respectively fixed to the fan shaft and the first end of the driving shaft. The electric fan according to claim 5, wherein the connecting member is a transmission tooth group formed by at least two intermeshing gears, and one end thereof is connected to the fan shaft, and the other end is connected to the first end of the driving shaft. The electric fan of claim 3, further comprising a bracket; the bracket has a shaft seat for pivoting the motor; the second end of the drive shaft is further connected with a second transmission mechanism, and the second transmission mechanism Connected to a cam, and the axle seat is coupled to the cam by a link. The electric fan according to claim 8, wherein the first transmission mechanism and the second transmission mechanism are respectively provided with a pull rod, and each of the pull rods is respectively connected to the second end of the drive shaft by a linkage member, and can be pulled by Each pull rod is configured to disengage the corresponding linkage from the drive shaft.