WO2019218580A1 - Drive mechanism, machine head mechanism and fan - Google Patents

Abstract

A drive mechanism, a machine head mechanism applying the drive mechanism, and a fan (100) applying the machine head mechanism. The drive mechanism is configured to drive a machine head assembly (30) of the fan (100) to rotate vertically and horizontally. The drive mechanism comprises a pitching assembly (10) and a rotary assembly (50). The machine head assembly (30) is connected to the pitching assembly (10). The pitching assembly (10) drives the machine head assembly (30) to rotate to a preset pitching angle in the vertical direction. The rotary assembly (50) is connected to the pitching assembly (10) and is located below the pitching assembly (10). The rotary assembly (50) drives the machine head assembly (30) to rotate in the horizontal direction.

Description

Drive mechanism, head mechanism and fan

Technical field

The present application relates to the field of fan technologies, and in particular, to a driving mechanism, a head mechanism to which the driving mechanism is applied, and a fan to which the head mechanism is applied.

Background technique

At present, the head mechanism of some fans on the market includes: a head assembly, a left and right moving head assembly connected to the head assembly, and a tilting assembly. The head and the head of the head unit are rotated in the horizontal direction, that is, the head is shaken left and right in the horizontal direction. The tilting assembly is located below the head assembly and the left and right moving head assembly and supports the head assembly and the left and right shaking head assembly for tilting movement of the powered head assembly and the left and right moving head assembly to rotate the head assembly and the left and right moving head assembly to a preset The angle, that is, the vertical direction is rotated to a predetermined angle. However, the left and right shaking head assembly may come into contact with the pitch mechanism during the pitching motion, resulting in a smaller pitch angle of the fan.

Application content

In view of the above problems, the present application provides a drive mechanism intended to provide a fan having the drive mechanism with the advantage of a large pitch angle.

In order to solve the above technical problem, the driving mechanism provided by the present application is configured to drive the head assembly of the fan to perform vertical rotation and horizontal rotation, and the driving mechanism comprises:

a tilting assembly, the head assembly being coupled to the tilting assembly, the tilting assembly driving the head assembly to rotate in a vertical direction to a predetermined pitch angle;

A rotating assembly coupled to the pitching assembly and located below the pitching assembly, the rotating assembly having the motorized head assembly and the pitching assembly rotated in a horizontal direction.

Further, the pitching assembly includes a rotating shaft, and the head assembly includes two oppositely disposed connecting walls, each connecting wall being coupled to one end of the rotating shaft.

Further, the pitching assembly further includes a first side wall and a second side wall disposed opposite to each other, and the two ends of the rotating shaft are rotatably respectively passed through the first side wall and the second side wall corresponding thereto, and are connected to the connecting wall .

Further, the pitching assembly further includes a torsion spring sleeved on the rotating shaft and a limiting member disposed on the rotating shaft, the torsion spring includes opposite first and second ends, and the second side wall is further provided with a stop The first end is located at the limiting member, and the second end stops at the stopper.

Further, an end surface of the rotating shaft is recessed with a receiving groove, and the tilting assembly further includes a limiting ball received in the receiving groove, the first side wall is provided with a plurality of spaced-apart limiting holes, and the head assembly is in the tilting assembly The driving is rotated in a vertical direction to a predetermined pitch angle, and the limit ball is limited to the wall of the corresponding limiting hole.

Further, the limiting hole is distributed on a circumference centered on an intersection of a rotation center axis of the rotating shaft and a plane of the first side wall, and a circumference having a radius between the intersection point and the limiting ball; And/or,

The pitching assembly further includes an elastic member received in the receiving groove, one end of the elastic member abuts against the bottom wall of the receiving groove, and the other end abuts the limiting ball.

Further, the second side wall is provided with a plurality of spaced apart openings, and the stopper passes through one of the openings to stop the second end of the torsion spring.

Further, the rotating assembly includes a support member, and the pitch assembly further includes a bottom wall coupled to the first side wall and the second side wall, the support member being coupled to the bottom wall.

Further, the rotating component includes a motor, the motor has an output shaft, and the rotating component further includes a crank, a connecting rod, a positioning component, and a connecting post disposed on the positioning component, and the connecting rod One end of the rod is connected to the crank, the other end is connected to the connecting post, the support member is rotatably disposed on the positioning member, and the motor drives the head through the output shaft, the crank, the connecting rod, the connecting column, the supporting member and the bottom wall The assembly and pitch assembly rotate in the horizontal direction.

Further, the driving mechanism further includes a wire harness, the head assembly includes a main motor, the positioning member is further provided with a receiving cavity, the supporting member is provided with a through hole, and the wire harness sequentially passes through the receiving cavity, the through hole and the pitch Component, connected to the main motor.

The application also provides a head mechanism including a head assembly and the drive mechanism.

The application also provides a fan including a support assembly, the fan further including the head mechanism, the support assembly supporting the head mechanism.

The driving mechanism of the present application comprises a pitching component and a rotating component, the handpiece component is connected with a pitching component, the handpiece component is rotated in a vertical direction by a pitching component to a preset pitching angle, and the rotating component is connected with the pitching component And located under the pitching component, the rotating component with the motive head assembly and the tilting component are rotated in a horizontal direction, and the head assembly is at a predetermined pitch angle driven by the pitching component, and can also be driven by the rotating component. The direction is rotated. Since the rotating assembly of the present application is located below the pitching assembly, the pitching assembly only rotates with the motive head assembly in the vertical direction, so the fan of the present application has a large pitch angle.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the structures shown in the drawings without any creative work for those skilled in the art.

FIG. 1 is a schematic structural view of an embodiment of a head mechanism of the present application.

Figure 2 is a cross-sectional view of an embodiment of the handpiece mechanism of Figure 1.

3 is a schematic view showing a partial structure of the head mechanism shown in FIG. 1.

4 is a schematic view showing a partial structure of the head mechanism shown in FIG. 1.

FIG. 5 is a schematic structural view of a tilting assembly of the head mechanism of FIG. 1. FIG.

Fig. 6 is a structural schematic view showing another angle of the pitching assembly shown in Fig. 5.

FIG. 7 is a schematic structural view of still another angle of the tilting assembly shown in FIG. 5. FIG.

Figure 8 is a cross-sectional view of the pitching assembly of Figure 7 taken along line VIII-VIII.

Description of the reference numerals:

Label	name	Label	name
100	fan	30	Head assembly
10	Pitch component	31	Motor bracket
11	shell	311	Connecting wall
111	Side wall	33	Main motor
1111	Limit hole	331	Output shaft
113	Bottom wall	35	Fan blade
1131	Opening	351	Main fan blade
13	Rotating shaft	353	Chiba
131	First bushing	37	Mask
1311	Positioning member	50	Moving head assembly
132	Bulge	51	supporting item
1321	Holding slot	511	Via
133	Second sleeve	53	Motor
1121	Stop	531	Output shaft
1123	Opening	533	crank
1125	Stop end	535	link
135	Torsion spring	536	Connecting column
1351	First end	537	Positioning member
1353	Second end	5371	Accommodating chamber
137	Limiter	70	Harness
15	Elastic part	90	Column
17	Limit ball

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present application are only used to explain the components between a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

It should also be noted that when an element is referred to as being "fixed on" or "in" another element, it can be directly on the other element or the central element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a central element may be present.

In addition, the descriptions of "first", "second", and the like in this application are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. Nor is it within the scope of protection required by this application.

Referring to Figures 1-8, the present application provides a drive mechanism that is configured to drive the head assembly 30 of the fan for vertical and horizontal rotation.

The drive mechanism includes:

a tilting assembly 10, the head assembly 30 is coupled to the tilting assembly 10, the tilting assembly 10 driving the head assembly 30 to rotate in a vertical direction to a predetermined pitch angle;

The rotating assembly 50 is coupled to the pitching assembly 10 and positioned below the pitching assembly 10, the rotating assembly 50 having the motive head assembly 30 and the pitching assembly 10 rotated in a horizontal direction.

It can be understood that the pitch direction shown in FIG. 1 is the direction in which the head assembly 30 rotates in the vertical direction.

In an embodiment of the present application, the pitch angle ranges from -30° to 90°.

It can be understood that when the pitch angle is set to -30°, the head assembly 30 is rotated downward by 30° from the initial position in the vertical direction; when the pitch angle is set to 90°, the head assembly 30 is in the vertical direction. Rotate up to 90° from the initial position.

Optionally, the pitch angle is: -30°, -25°, -20°, -15°, -10°, -5°, -3°, 10°, 20°, 30°, 40°, 50 °, 60°, 70°, 80°, 90°, 100°, 110°, or 110. It will be appreciated that the handpiece assembly 30 can be manually adjusted to the desired pitch angle as desired.

It will be appreciated that the head assembly 30 performs a pitching motion along the centerline A of rotation. The rotary shaft 13 is also rotated along the rotation center line A. The head assembly 30 and the pitch assembly 10 are horizontally rotated along the rotation center line B, that is, the rotation center line of the rotation assembly 50 is B.

When the handpiece assembly 30 is raised by 90° along the rotation center line A, the rotation center line A intersects the rotation center line B, and the rotation center line C of the main motor 33 of the head assembly 30 and the rotation center line B of the rotation assembly 50 coincide. At this time, the center of gravity of the head mechanism is relatively centered, so that the center of gravity of the head mechanism is relatively stable and it is not easy to fall over. When the handpiece assembly 30 is raised 90 degrees along the centerline of rotation A, the handpiece assembly 30 is blown up "toward".

The drive mechanism of the present application includes a pitching assembly 10 and a rotating assembly 50, the handpiece assembly 30 being coupled to a pitching assembly 10 that is rotated in a vertical direction by a pitching assembly 10 to a predetermined pitch angle, The rotating assembly 50 is coupled to the tilting assembly 10 and located below the pitching assembly 10, the rotating assembly 50 is rotated in a horizontal direction by the motive head assembly 30 and the tilting assembly 10, and the head assembly 30 is pre-set by the tilting assembly 10 When the pitch angle is raised, it can also be rotated in the horizontal direction by the rotation of the rotating assembly 50. Since the rotating assembly 50 of the present application is located below the pitching assembly 10, the pitching assembly 10 only rotates with the motive head assembly 30 in a vertical direction such that the rotating assembly 50 does not perform a pitching motion to avoid collision with the pitching assembly 10, and thus the present application The fan has a large pitch angle.

Moreover, the tilting assembly 10 is located between the head assembly 30 and the rotating assembly 50. After the head assembly 30 is rotated in the vertical direction by a pitching assembly 10 to a predetermined angle, the rotating assembly 50 is driven by the head assembly. 30 and the pitching assembly 10 are rotated in the horizontal direction. Compared with the prior art, the tilting assembly supporting head assembly and the left and right moving head assembly, after the head assembly and the left and right shaking head assembly are rotated to a predetermined angle in the vertical direction, the left and right moving head assembly also carries the motive head assembly at a level The technical solution for the direction of rotation. The technical solution of the present application can make the fan run smoothly, and the center of gravity is relatively stable, and it is not easy to fall over.

Further, after the head assembly 30 is rotated in the vertical direction by a pitching assembly 10 to a predetermined angle, the rotating assembly 50 is rotated in the horizontal direction by the power head assembly 30 and the pitch assembly 10. Compared with the prior art, after the head assembly and the left and right shaking head assemblies are rotated to a predetermined angle in the vertical direction, the fan forms a predetermined angle between the left and right moving head assemblies and the pitching components during the horizontal rotation, and A technical solution for the left and right shaking head assembly to perform a back and forth shearing action with respect to the pitching assembly. The technical solution of the present application has the advantage of being strong and does not pinch the finger.

The tilting assembly 10 includes a rotating shaft 13 including a motor bracket 31. The motor bracket 31 includes two opposite connecting walls 311, and each connecting wall 311 is connected to one end of the rotating shaft 13.

In an embodiment of the present application, the two ends of the rotating shaft 13 are convexly provided with protruding ends (not shown), and the protruding ends can be connected with the corresponding connecting walls 311.

The two ends of the rotating shaft 13 of the technical solution of the present application are respectively connected with the corresponding connecting wall 311, so that when the rotating shaft 13 rotates, the connecting wall 311 can be rotated to rotate the head assembly 30 under the driving of the pitching assembly 10.

The tilting assembly 10 further includes a housing 11 including a first side wall 111 and a second side wall 112 oppositely disposed, and two ends of the rotating shaft 13 are rotatably respectively passed through the first side wall 111 and the second corresponding thereto After the side wall 112, it is connected to the connecting wall 311.

In an embodiment of the present application, the pitch assembly 10 further includes a first sleeve 131 and a second sleeve 133 disposed opposite to each other. The first sleeve 131 is disposed on the inner surface of the first sidewall 111, and the second sleeve 133 is disposed on the outer surface of the second sidewall 112. The rotating shaft 13 sequentially passes through the first side wall 111, the first sleeve 131, the second side wall 112 and the second sleeve 133. The first bushing 131 and the second bushing 133 can be used to protect the rotating shaft 13.

The first sleeve 131 and the first side wall 111 can be connected by a positioning member 1311. The positioning member 1311 can be a screw or the like.

The two ends of the rotating shaft 13 of the technical solution of the present application are rotatably passed through the corresponding first side wall 111 and the second side wall 112, respectively, and connected to the connecting wall 311, so that when the rotating shaft 13 rotates, the first side wall 111 and The second side wall 112 does not rotate with the rotating shaft 13, and the connecting wall 311 is rotated by the rotating shaft 13 to rotate the head assembly 30 under the driving of the rotating shaft 13 of the pitching assembly 10.

The tilting assembly 10 further includes a torsion spring 135 sleeved on the rotating shaft 13 and a limiting member 137 disposed on the rotating shaft 13 . The torsion spring 135 includes a first end 1351 and a second end 1353 opposite to each other. The second side wall 112 is further provided with a stopper 1121. The first end 1351 is limited to the limiting member 137, and the second end 1353 stops at the stopper 1331.

The stopper 137 is insertable into the rotating shaft 13 and partially exposes the rotating shaft 13.

The first end 1351 of the torsion spring 135 of the technical solution of the present application is limited to the limiting member 137, and the second end 1353 stops at the stopper 1331. When the rotating shaft 13 rotates, the torsion spring 135 is restricted by the limiting member 137 and The stop of the stopper 1331 is tightened, and at this time, the rotating shaft 13 generates a reaction preload to prevent the head assembly 30 from sliding down.

One end surface of the rotating shaft 13 is recessed with a receiving groove 1321. The tilting assembly 10 further includes a limiting ball 17 received in the receiving groove 1321. The first side wall 111 defines a plurality of spaced-apart limiting holes 1111. The assembly 30 is rotated in the vertical direction by a pitching assembly 10 to a predetermined pitch angle, and the limiting ball 17 is limited to the wall of the corresponding limiting hole 1111.

The number of the limiting holes 1111 can be 8-15.

In an embodiment of the present application, 10 limiting holes 1111 can be disposed. After the limiting ball 17 is moved from one of the limiting holes 1111 to another adjacent limiting hole 1111, the angle of rotation of the head assembly 30 is 10. degree.

It can be understood that the number of the limiting holes 1111 and the spacing of the adjacent limiting holes 1111 can be set according to actual needs to adjust the movement of the limiting ball 17 from one of the limiting holes 1111 to another adjacent limiting hole 1111. The angle at which the head assembly 30 is rotated.

It can be understood that the rotating shaft 13 is convexly provided with a protrusion 132, and one end surface of the protrusion 132 is recessed with a high receiving groove 1321. The diameter of the limiting ball 17 may be larger than the diameter of the limiting hole 1111.

The limiting ball 17 of the technical solution of the present application is accommodated in the accommodating groove 1321, and the head assembly 30 is rotated in the vertical direction to a predetermined pitch angle by the pitching assembly 10, and the limiting ball 17 can be along the A side wall 111 rolls and is limited to the wall of the hole of the corresponding limiting hole 1111 and/or the circumference of the wall of the hole. When the limit ball 17 is limited to the hole wall of the corresponding limit hole 1111 and/or the circumference of the hole wall, the head assembly 30 can be maintained at the pitch angle without slipping. By the cooperation between the limiting ball 17 and the limiting hole 1111, the user can adjust the position of the limiting ball 17 to move the handpiece assembly 30 to a suitable pitch angle.

The limiting hole 1111 is distributed at a center of the intersection of the rotation center axis of the rotating shaft 13 and the plane of the first side wall 111, and a single circumference with a radius between the intersection point and the limiting ball 17 as a radius On the circumference.

The limiting hole 1111 of the technical solution of the present application is distributed at a center point of the intersection of the rotation center axis of the rotating shaft 13 and the plane of the first side wall 111, and the distance between the intersection point and the limiting ball 17 is a radius. On a single circumferential circumference, the spacing between the limiting ball 17 and any of the limiting holes 1111 is equal, so that the head assembly 30 is rotated in the vertical direction by a pitching assembly 10 to a predetermined pitch angle. During the process, the limiting ball 17 can be limited to any of the limiting holes 1111.

The tilting assembly 10 further includes an elastic member 15 received in the receiving groove 1321. One end of the elastic member 15 abuts against the bottom wall of the receiving groove 1321, and the other end abuts the limiting ball 17.

The elastic member 15 can be a spring.

The limiting ball 17 is movably disposed in the receiving groove 1321 by the elastic member 15, and a fixed preloading force is applied to the elastic member 15 by the defining function of the bottom wall of the receiving groove 1321 and the first side wall 111. The piece 15 is in a long compression state. When the handpiece assembly 30 is tilted up or down in the vertical direction, the limiting ball 17 moves from one limiting hole 1111 to the other limiting hole 1111. In the process, the elastic member 15 is first further compressed and then The slow release, since the elastic member 15 is always in a long compression state, after the limit ball 17 moves to the other limit hole 1111, the elastic member 15 applies an elastic force to the limit ball 17 to stop it in the limit hole 1111. On the periphery of the wall of the hole and/or the wall of the hole, the head assembly 30 can be maintained at a pitch angle without slipping.

The second sidewall 112 defines a plurality of spaced apart openings 1123. The stopper 1121 passes through one of the openings 1123 to stop the second end 1353 of the torsion spring 135.

The stopper 1121 can pass through the second sleeve 133 and the second sidewall 112 to connect the second sleeve 133 and the second sidewall 112. The second sleeve 133 can be provided with a hole corresponding to the opening 1123.

The portion of the stopper 1121 passing through the second side wall 112 forms a stopper end 1125, and the stopper end 1125 refers to the second end 1353 of the torsion spring 135.

The second sidewall 112 of the technical solution of the present application is provided with a plurality of spaced apart openings 1123. The stopper 1121 passes through one of the openings 1123 to stop the second end 1353 of the torsion spring 135.

It can be understood that the plurality of openings 1123 can be disposed on the second sidewall 112 along a direction from one side of the second sidewall 112 to the other side. It can be understood that by providing the stopper 1121 in the different opening 1123, the stopper 1121 has a different stopping force against the second segment 1353 of the torsion spring 135. Therefore, the position, the number, and the interval of the opening 1123 can be set according to actual needs, and the stopper 1221 can be adjusted to the second end 1353 of the torsion spring 135 by disposing the stopper 1121 in the adapted opening 1123. Stop force.

The rotating assembly 50 includes a support member 51 that further includes a bottom wall 113 coupled to the first side wall 111 and the second side wall 112, the support member 51 being coupled to the bottom wall 113.

The support member 51 of the technical solution of the present application is connected to the bottom wall 113 of the pitch assembly 10. The rotation assembly 50 is caused to rotate the pitch assembly 10 and the head assembly 30 by the connection relationship between the support member 51 and the bottom wall 113.

The rotating component 50 includes a motor 53 having an output shaft 531. The rotating component 50 further includes a crank 533 sleeved on the output shaft 531, a connecting rod 535, a positioning member 537, and a positioning member 537. The connecting rod 536 has one end connected to the crank 533 and the other end connected to the connecting post 536. The supporting member 51 is rotatably disposed on the positioning member 537, and the motor 53 passes through the output shaft 531 and the crank 533. The link 535, the connecting post 536, the support member 51 and the bottom wall 113 drive the head assembly 30 and the pitch assembly 10 to rotate in the horizontal direction.

In an embodiment of the present application, the motor 53 is disposed at one end of the support member 51, and the other end of the support member 51 is provided with a through hole (not shown) through which the support member 51 is rotatably sleeved on the positioning member 537. .

The link 535 is rotatably coupled to the connecting post 536.

When the motor 53 of the technical solution of the present application drives the output shaft 531 to rotate, the output shaft 531 drives the crank 53 to rotate, and drives the link 535 connected to the crank 53 and the support member 51 to rotate, and then the driven head assembly 30 and the tilting assembly 10 are Rotate horizontally.

The driving mechanism further includes a wire harness 70. The head assembly 30 includes a main motor 33. The positioning member 537 is further provided with a receiving cavity 5371. The supporting member 51 defines a through hole 511, and the wire harness 70 sequentially passes through the receiving cavity. 5371 and a via 511 are connected to the main motor 33.

In an embodiment of the present application, the tilting assembly 10 further includes a housing (not labeled) that is disposed on the outer casing 11. A gap is formed between the housing and the outer casing 11. The wire harness 70 sequentially passes through the receiving cavity 5371 and the through hole 511. And a gap between the casing and the casing 11 is connected to the main motor 33.

The central axis of the accommodating chamber 5371 may coincide with the rotation center line B of the rotating assembly 50 such that the rotating assembly 50 receives the wire harness 70 accommodated in the accommodating chamber 5371 during the rotation of the tilting assembly 10 and the head assembly 30 in the horizontal direction. The effect of this horizontal rotation is small, so that the wire harness 70 is less susceptible to wear and has a long service life.

The main motor 33 drives its output shaft 331 to rotate to drive the rotation of the blade 35 connected to the output shaft 331.

It will be appreciated that the fan blade 35 of the fan head is rotatable about a central axis C of the output shaft 331.

The wire harness 70 of the technical solution of the present application sequentially passes through the accommodating chamber 5371 and the through hole 511, and is connected to the main motor 33 to supply electric power to the main motor 33.

Further, after the head assembly 30 is at a pitch angle, the head assembly 30 rotates horizontally along the horizontal rotation center B in the horizontal direction, and the blade 35 also rotates around the center axis C, so that a large negative pressure is generated at the fan head. Therefore, more air is taken in, so that the fan blade 35 can blow a large wind and the wind speed is large. Therefore, the fan of the present application also has the advantage that the air supply distance is long and the wind speed is strong.

The application also provides a handpiece mechanism that includes a handpiece assembly 30 and the above described drive mechanism.

Since all the technical solutions of all the above embodiments are adopted in the head mechanism, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not repeatedly described herein.

In an embodiment of the present application, the blade 35 includes a main fan blade 351 and a chiba 353, and a plurality of main blades 351 are fixed on the hub, and a chiba 353 is disposed between the adjacent main blades 351, and the chiba 353 is The main fan blades 351 are arranged in a duck-like layout in the axial direction of the hub. When the fan head rotates, the airflow on the air inlet side is accelerated by the Chiba 353 to form a separation vortex that interferes with the airflow of the main fan blade 351, and the suction force on the suction surface of the main fan blade 351 is brought back by the backflow of the leading edge of the main blade 351. The airflow at the leading edge of the main blade 351 is smoothed, and the actual work area is increased. Therefore, the internal flow quality of the fan head is good and the efficiency is high. The fan head has a larger air supply range, a farther wind supply distance, and a faster wind speed.

Generally, the position of the chiba 353 in the axial direction of the hub is located upstream of the main blade 351 with respect to the airflow flowing through the fan head, so that the in-fan flow quality is better.

In the embodiment of the present application, the main fan blade 351 and the chiba 353 are respectively designed for the front curve and the back curve, and the chiba 353 adopts a back curve front edge and a straight trailing edge shape, and the trailing edge has a forward sweep angle. . Wherein, the chiba 353 and the main fan blade 351 are arranged on the hub in a superior duck-like layout. It should be noted that the chisel 353 and the main fan blade 351 can also be arranged on the hub in a lower duck layout to enhance the flexibility of the fan head design. It should be understood that the main blade 351 may also be a swept or straight blade design.

The handpiece mechanism also includes a mask 37 that is received in the mask 37.

The output shaft 331 of the main motor 33 is connected to the blade 35 through the mask 37.

The application also provides a fan (not shown) including a support assembly (not shown).

The fan also includes the above-described head mechanism, and the support assembly supports the head mechanism.

In an embodiment of the present application, the fan may include a post 90 that may have a cylindrical configuration. The rotating assembly 50 is disposed on the column 90. The shearing action is not caused between the rotating assembly 50 and the column 90, and the user's hand is prevented from being pinched.

Since the fan adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not repeatedly described herein.

The above are only the preferred embodiments of the present application, and are not intended to limit the scope of the patents of the present application, and the equivalent structural changes made by the present application and the contents of the drawings, or directly or indirectly The relevant technical fields are all included in the patent protection scope of the present application.

Claims (20)

1. A driving mechanism configured to drive a head assembly of a fan for vertical rotation and horizontal rotation, wherein the driving mechanism comprises:

   a tilting assembly, the head assembly being coupled to the tilting assembly, the tilting assembly driving the head assembly to rotate in a vertical direction to a predetermined pitch angle;

   A rotating assembly coupled to the pitching assembly and located below the pitching assembly, the rotating assembly having the motorized head assembly and the pitching assembly rotated in a horizontal direction.
2. A drive mechanism according to claim 1, wherein the pitching assembly includes a rotating shaft, and the head assembly includes two oppositely disposed connecting walls, each connecting wall being coupled to one end of the rotating shaft.
3. The driving mechanism of claim 2, wherein the pitching assembly further comprises a first side wall and a second side wall oppositely disposed, the two ends of the rotating shaft respectively rotatably passing through the first side wall corresponding thereto After the two side walls, they are connected to the connecting wall.
4. The driving mechanism of claim 3, wherein the pitching assembly further comprises a torsion spring sleeved on the rotating shaft and a limiting member disposed on the rotating shaft, the torsion spring comprising oppositely disposed first ends and second ends, The second side wall is further provided with a stopper, the first end is located at the limiting member, and the second end is stopped at the stopper.
5. The driving mechanism of claim 3, wherein one end surface of the rotating shaft is recessed with a receiving groove, and the tilting assembly further comprises a limiting ball received in the receiving groove, the first side wall is provided with a plurality of spaced positions The hole, the head assembly is rotated in a vertical direction by a pitching assembly to a predetermined pitch angle, and the limit ball is located at a hole wall of the corresponding limiting hole.
6. The driving mechanism according to claim 5, wherein said limiting hole is distributed at a center of intersection of a central axis of rotation of said rotating shaft and a plane of said first side wall, said intersection point and said limit ball The distance between the circumferences is the radius; and/or,

   The pitching assembly further includes an elastic member received in the receiving groove, one end of the elastic member abuts against the bottom wall of the receiving groove, and the other end abuts the limiting ball.
7. The driving mechanism of claim 4, wherein the second side wall defines a plurality of spaced apart openings, the stop member passing through one of the openings to stop the second end of the torsion spring.
8. The drive mechanism of claim 3 wherein said rotating assembly includes a support member, said pitch assembly further comprising a bottom wall coupled to the first side wall and the second side wall, the support member being coupled to the bottom wall.
9. The driving mechanism according to claim 8, wherein the rotating assembly comprises a motor, the motor has an output shaft, and the rotating assembly further comprises a crank, a connecting rod, a positioning member, and a sleeve disposed on the output shaft. a connecting post of the positioning member, one end of the connecting rod is connected to the crank, the other end is connected to the connecting post, the supporting member is rotatably disposed on the positioning member, and the motor passes through the output shaft, the crank, the connecting rod, the connecting column, The support member and the bottom wall drive the head assembly and the pitch assembly to rotate in a horizontal direction.
10. A driving mechanism according to claim 8, wherein said driving mechanism further comprises a wire harness, said handpiece assembly comprises a main motor, said positioning member is further provided with a receiving cavity, said supporting member is provided with a through hole, and the wire harness is in turn Connect to the main motor through the housing, via and pitch components.
11. A head mechanism includes a head assembly and a driving mechanism, and the driving mechanism is configured to drive a head assembly of the fan to perform vertical rotation and horizontal rotation, and the driving mechanism comprises:

    a tilting assembly, the head assembly being coupled to the tilting assembly, the tilting assembly driving the head assembly to rotate in a vertical direction to a predetermined pitch angle;

    A rotating assembly coupled to the pitching assembly and located below the pitching assembly, the rotating assembly having the motorized head assembly and the pitching assembly rotated in a horizontal direction.
12. A handpiece mechanism according to claim 11, wherein the pitching assembly includes a rotating shaft, and the head assembly includes two oppositely disposed connecting walls, each connecting wall being coupled to one end of the rotating shaft.
13. The handpiece mechanism of claim 12, wherein the pitching assembly further comprises a first side wall and a second side wall oppositely disposed, the two ends of the rotating shaft respectively rotatably passing through the first side wall corresponding thereto and After the second side wall, it is connected to the connecting wall.
14. The handpiece mechanism according to claim 13, wherein the pitching assembly further comprises a torsion spring sleeved on the rotating shaft and a limiting member disposed on the rotating shaft, the torsion spring comprising opposite first and second ends, The second side wall is further provided with a stopper, the first end is located at the limiting member, and the second end is stopped at the stopper.
15. The head mechanism of claim 13 , wherein one end surface of the rotating shaft is recessed with a receiving groove, and the tilting assembly further comprises a limiting ball received in the receiving groove, wherein the first side wall is provided with a plurality of spaced intervals The position of the head assembly is rotated in the vertical direction by a pitching assembly to a predetermined pitch angle, and the limit ball is located at the wall of the corresponding limiting hole.
16. The handpiece mechanism according to claim 15, wherein the limiting hole is distributed at a point centered on an intersection of a central axis of rotation of the rotating shaft and a plane of the first side wall, the intersection point and the limiting ball The distance between them is on the circumference of the radius; and/or,

    The pitching assembly further includes an elastic member received in the receiving groove, one end of the elastic member abuts against the bottom wall of the receiving groove, and the other end abuts the limiting ball.
17. The handpiece mechanism according to claim 14, wherein the second side wall defines a plurality of spaced apart openings, and the stopper passes through one of the openings to stop the second end of the torsion spring.
18. The handpiece mechanism of claim 13 wherein said rotating assembly includes a support member, said pitch assembly further comprising a bottom wall coupled to the first side wall and the second side wall, the support member being coupled to the bottom wall.
19. A handpiece mechanism according to claim 18, wherein said rotating assembly comprises a motor, said motor having an output shaft, said rotating assembly further comprising a crank, a connecting rod, a positioning member, and a sleeve sleeved on the output shaft a connecting rod of the positioning member, one end of the connecting rod is connected to the crank, the other end is connected to the connecting post, the supporting member is rotatably disposed on the positioning member, and the motor passes through the output shaft, the crank, the connecting rod and the connecting column , the support member and the bottom wall, the drive head assembly and the tilt assembly are rotated in a horizontal direction; and/or

    The driving mechanism further includes a wire harness, the head assembly includes a main motor, the positioning member is further provided with a receiving cavity, the supporting member is provided with a through hole, and the wire harness sequentially passes through the receiving cavity, the through hole and the tilting component, and The main motor is connected.
20. A fan includes a support assembly, wherein the fan further includes a head mechanism, the support assembly supports a head mechanism, the head mechanism includes a head assembly and a drive mechanism, and the drive mechanism is configured to drive a fan The head assembly performs vertical rotation and horizontal rotation, and the driving mechanism includes:

    a tilting assembly, the head assembly being coupled to the tilting assembly, the tilting assembly driving the head assembly to rotate in a vertical direction to a predetermined pitch angle;

    A rotating assembly coupled to the pitching assembly and located below the pitching assembly, the rotating assembly having the motorized head assembly and the pitching assembly rotated in a horizontal direction.