TWI555913B - Pendulum type wall fan - Google Patents

Description

Swing head wall fan

The invention relates to the field of reciprocating motion of a fan, and more particularly to a oscillating wall fan.

A conventional fan has a fan motor that drives a number of blades to rotate. The fan motor is connected to a swinging mechanism, and the swinging mechanism and the fan are coupled through a connecting rod to reciprocate the fan along a fixed track.

The known oscillating mechanism engages a worm gear with a worm gear and connects the worm gear to a crank through a reduction gear set. The connecting rod is connected to the crank at one end, and the other end is usually combined with the outside of the fan. When the worm is driven to rotate by the fan motor, the worm wheel drives the crank to move synchronously with the connecting rod to drive the fan to swing back and forth.

However, turning off the fan, the swing mechanism no longer drives the fan to wiggle, but stays at an angle. If the force is forced to pull the angle of the fan, there is a danger that the speed gear set will collapse or the connecting rod will break.

In particular, when a plurality of fans are installed in an indoor environment, the angles of the fans are different, which adversely affects the convection of the indoor air.

Therefore, how to eliminate these drawbacks has become an urgent problem to be solved by the present invention.

In view of this, the present invention provides a swing head type wall fan, the main purpose of which One is that the oscillating device is used to continue the movement along the original trajectory from the stop position after the motor is started, thereby improving the convection effect of the indoor air.

Due to the above object, the oscillating wall fan of the present invention comprises a fan and a oscillating device, and the fan has a rod outside. Wherein, the oscillating head device comprises: a motor having a motor shaft disposed at an eccentric position of the motor to reciprocate; a motor seat for mounting the motor to the motor seat without interfering with movement of the motor shaft; a crank connected to the motor shaft; a link coupled to the crank and not at the same end as the motor shaft; a coupling seat that is fastened to the end of the fan, the center of the bottom of the coupling is protruding a shaft, a protrusion is protruded from the top surface of the coupling seat, the protrusion is pivotally connected to the connecting rod, and the crank is not at the same end of the connecting rod; a Palin seat is fixed under the motor seat, and the Palin seat faces the motor The seat has a receiving portion; and a Palin embedded in the housing of the Palin seat and sleeved outside the shaft to support the coupling seat to reciprocate together with the strut.

When the motor is stopped, the motor shaft and the fan are stationary. After the motor is restarted, the motor shaft continues to move along the original trajectory from the stop position, and the coupling seat is driven to move in synchronization with the fan. In particular, multiple fans swing back and forth at approximately the same angle, which is sufficient to enhance the convection of the indoor air.

The above-described objects, structures and functions of the present invention will be described with reference to the detailed description of the embodiments.

10‧‧‧ wall fan

11‧‧‧Fan

12‧‧‧ Cover

13‧‧‧ leaves

14‧‧‧Shell

15‧‧‧U-arm

16‧‧‧ pole

17‧‧‧Swing device

18‧‧‧ openings

20‧‧‧Motor

21‧‧‧Motor shaft

22‧‧‧Motor seat

24‧‧‧ horizontal board

25‧‧‧ concave surface

26‧‧‧ Screws

30‧‧‧ crank

31‧‧‧ Connecting rod

32‧‧‧Latch

33‧‧‧ hole

40‧‧‧ Connections

41‧‧‧Axis

42‧‧‧Bump

43‧‧‧ arc slot

44‧‧‧ screw holes

45‧‧‧Restrictions

51‧‧ ‧ Palin

52‧‧‧ accommodating department

53‧‧‧ground seat

55‧‧Peiling

Figure 1 is an exploded view of a preferred embodiment of the wall fan of the present invention.

Figures 2 and 3 are exploded views of the oscillating device at different angles.

Figures 4 and 5 are continuous motion diagrams of the oscillating device.

Referring to Fig. 1, a specific structure of a preferred embodiment of the wall fan 10 is illustrated by a fan 11, a trim cover 12 and a oscillating head unit 17.

The fan 11 includes three blades 13 and a casing 14, and inside the casing 14 is a fan motor. Upon energization, the fan motor drives the blades 13 to rotate relative to the outer casing 14 to produce the desired wind. The end of a rod 16 is secured to the lowermost end of a U-shaped arm 15. The U-shaped arms 15 have bifurcated ends that are pivotally attached to the exterior of the outer casing 14.

The cover 12 has an elongated opening 18. When the cover 12 covers the oscillating device 17, the struts 16 are otherwise passed through the opening 18 of the cover 12 and connected to the oscillating device 17. This opening 18 does not affect the oscillation of the strut 16.

As shown in FIGS. 2 and 3, the oscillating weight device 17 is composed of a motor 20, a motor base 22, a crank 30, a link 31, a coupling base 40, a Palin seat 51 and a Palin 55.

The motor base 22 has a substantially U-shaped design with a transverse plate 24 defining a concave curved surface 25 at the edge of the transverse plate 24. The motor mount 22 is fastened to the wall with a number of screw members 26 to serve as a foundation for the wall to stand against the wall.

The Palin seat 51 has a U-shaped design that is locked under the motor base 22. The stand 51 has a receiving portion 52 and a grounding seat 53. The accommodating portion 52 is formed at the face plate 24 facing the horizontal seat 24 for inlaying the Palin 55. The grounding seat 53 is fastened to the side of the Palin 51 and can be connected to at least one ground wire.

The motor 20 has a motor shaft 21 that projects from the eccentric position of the bottom of the motor 20 to reciprocate. When the motor 20 is fastened to the horizontal plate 24, the concave curved surface 25 does not interfere with the swing of the motor shaft 21. When the fan is turned off or the rotation is stopped, the motor shaft 21 of the motor 20 is stopped. When the fan is restarted, the motor shaft 21 continues to move along the original trajectory from the stop position.

The crank 30 has a hole 33. When the motor shaft 21 is inserted into the hole 33 of the crank 30, a latch 32 couples the crank 30 to the motor shaft 21. The link 31 is coupled to the crank 30, which is not at the same end of the crank 30 as the motor shaft 21.

In the present embodiment, the coupling seat 40 is a circular disk, and a central portion of the bottom surface thereof protrudes from a shaft 41. The shaft 41 is embedded in the Palin 55 to support the rotation of the coupling base 40 relative to the Palin seat 51. The coupling seat 40 also has a stud 42 and an arc groove 43. The protrusion 42 protrudes from the eccentric position of the top surface of the coupling seat 40, and a restricting portion 45 is formed on the outer circumferential surface. The restricting portion 45 is like an angular groove, and the notch faces the arc groove 43. The arc groove 43 is formed on the top surface of the joint seat 40 in the radial direction, and the bottom of the groove forms a second screw hole 44.

When the strut 16 is coupled to the coupling seat 40, the strut 16 is blocked by the restricting portion 45 of the stud 42 so that the end of the strut 16 different from the fan can be quickly inserted into the arc groove 43 and can be used by other screw members. 26 passes through and locks into the corresponding screw hole 44. Therefore, the restricting portion 45 engages the arcing groove 43 to receive the partial strut 16 to complete the mounting work of the strut 16 in conjunction with the coupling base 40.

The swing of the motor shaft 21, the associated crank 30 is actuated in synchronization with the link 31, and the drive coupling 40 is rotated to an angle, so that the strut 16 swings to the upper right position of FIG. Alternatively, the motor shaft 21 drives the coupling base 40 to rotate, and the associated strut 16 swings to the lower right position of FIG.

Of course, when the fan is turned off, the motor shaft 21 is stationary, even The belt strut 16 stops the reciprocating motion. After the fan is restarted, the motor shaft 21 continues to move along the original trajectory from the stop position, and drives the coupling seat 40 to carry the strut 16 in synchronization with the fan. In an environment where multiple fans are installed indoors, these fans oscillate back and forth at approximately the same angle, which can enhance the convection effect of the indoor air.

16‧‧‧ pole

17‧‧‧Swing device

20‧‧‧Motor

21‧‧‧Motor shaft

22‧‧‧Motor seat

24‧‧‧ horizontal board

25‧‧‧ concave surface

26‧‧‧ Screws

30‧‧‧ crank

31‧‧‧ Connecting rod

32‧‧‧Latch

33‧‧‧ hole

40‧‧‧ Connections

41‧‧‧Axis

42‧‧‧Bump

43‧‧‧ arc slot

44‧‧‧ screw holes

45‧‧‧Restrictions

51‧‧ ‧ Palin

52‧‧‧ accommodating department

53‧‧‧ground seat

55‧‧Peiling

Claims (6)

A oscillating wall fan comprises: a fan (11) having a rod (16) outside; a oscillating device (17) comprising: a motor (20) having a motor (20) a reciprocating motor shaft (21) that is eccentrically positioned; the motor shaft (21) is stationary when the motor (20) is stopped; and the motor shaft (21) is self-stopping when the motor (20) is restarted Begin to move along the original trajectory; a motor seat (22) for the motor (20) to be mounted to the motor seat (22) without interfering with the movement of the motor shaft (21); a crank (30), which is coupled to the motor The shaft (21) is connected; a connecting rod (31) which is coupled to the crank (30) and not at the same end as the motor shaft (21); a coupling seat (40) which fastens the strut (16) different from the fan At the end of (11), a central portion of the bottom surface of the coupling seat (40) protrudes from a shaft (41), and a protruding post (42) protrudes from a top surface of the coupling seat (40), and the protruding post (42) pivots the connecting rod ( 31), which is not at the same end of the connecting rod (31) as the crank (30); a Palin seat (51) which is firmly below the motor base (22), the Palin seat (51) facing the motor seat ( 22) having a receiving portion (52); and a Palin (55) embedded in the Palin seat (51) The holding portion (52) and an outer shaft sleeve (41), coupled to the seat support (40) together with the struts (16) to reciprocate together. The oscillating wall fan according to claim 1, wherein the motor base (22) has a horizontal plate (24) for fastening the motor (20), and the horizontal plate (24) has a dry A concave curved surface (25) involving the movement of the motor shaft (21). The oscillating wall fan according to the first aspect of the patent application, wherein the top surface of the coupling seat (40) is provided with a stud (42) at an eccentricity. The oscillating wall fan according to claim 3, wherein the top surface of the coupling seat (40) forms an arc groove (43) along a radial direction, and the arc groove (43) accommodates a partial struts (16). ). The oscillating wall fan according to claim 4, wherein the protrusion (42) forms a restriction portion (45) adjacent to the arc groove (43), and the restriction portion (45) cooperates with the arc groove (43). ) accommodate a partial struts (16). The oscillating wall fan according to claim 1 of the patent application, further comprising a cover (12) covering the oscillating device (17), the cover (12) having an opening for allowing the struts (16) to pass (18).