CN214742264U - Fan pitching adjusting mechanism, table fan and combined table fan - Google Patents

Abstract

The utility model provides a fan every single move adjustment mechanism, platform fan, combination platform fan, include: the air-permeable fan comprises a shell, wherein a space is formed in the shell, and ventilation openings are distributed in the shell; the fan assembly is rotatably connected in the shell, and the included angle between the rotating central shaft of the fan assembly and the horizontal plane is smaller than 90 degrees. When the fan assembly integrally rotates in the shell, an included angle smaller than 90 degrees exists between the rotating central shaft and the horizontal plane, when the included angle between the rotating central shaft and the horizontal plane is 0 degree, the blowing angle of the fan assembly rotates along with the fan integrally when wind is output, so that the blowing direction changes in the horizontal plane in the vertical range, a blowing mode of pitching blowing is formed, and when a user stands in front of the fan, the user can feel the blowing experience from head to foot and from foot to head.

Description

Fan pitching adjusting mechanism, table fan and combined table fan

Technical Field

The utility model relates to a fan technical field, concretely relates to fan every single move adjustment mechanism, desk fan, combination desk fan.

Background

The fan is a commonly used domestic electric appliance, all fans on the market have a head shaking function, and the fan with the head shaking function can blow air within a certain height range by rotating the fan. When the user uses the fan, the height range of the fan blowing air is controlled by adjusting the height of the fan. The human body has a certain height, and the user can feel the blowing feeling from head to foot only by frequently changing the height of the fan.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the height range defect that needs frequent adjustment fan height change fan among the prior art to blow to a fan every single move adjustment mechanism, platform fan, combination platform fan are provided.

A fan pitch adjustment mechanism comprising:

the air-permeable fan comprises a shell, wherein a space is formed in the shell, and ventilation openings are distributed in the shell;

the fan assembly is rotatably connected in the shell, and the included angle between the rotating central shaft of the fan assembly and the horizontal plane is smaller than 90 degrees.

Further comprising:

the counterweight frame is rotationally connected to the fan assembly, and a rotating shaft of the counterweight frame is parallel to a rotating central shaft of the fan assembly, or an included angle between the rotating shaft of the counterweight frame and the rotating central shaft of the fan assembly is smaller than 90 degrees;

the counterweight motor is arranged on the counterweight frame, and the output end of the counterweight motor is connected with the fan assembly.

The fan assembly includes:

the base frame is rotationally connected in the shell, and the counterweight frame is rotationally connected to the base frame;

the fan blade is rotationally connected to the base frame, a rotation central shaft of the fan blade is perpendicular to a rotation central shaft of the fan assembly, or the rotation central shaft of the fan blade is perpendicular to the rotation central shaft of the fan assembly in space.

The base frame includes:

the supporting ring frame is rotatably connected in the shell;

the shaft bracket is arranged on the support ring bracket, and the fan blade is rotationally connected to the shaft bracket;

the first motor is arranged on the shaft bracket, and the output end of the first motor is connected with the fan blade.

The shaft bracket is provided with:

and the counterweight frame is rotatably connected to the mounting arm.

The mounting arm has at least one, the output of counter weight motor passes the counter weight frame with the mounting arm is connected, be equipped with on the counter weight motor and supply the through-hole that the output of counter weight motor passed.

And the mounting arm is provided with a flat position hole matched with the output end of the counterweight motor.

The fan pitch adjustment mechanism further comprises:

the first adjusting ring is arranged in the shell, the fan assembly is rotatably connected to the first adjusting ring, and the first adjusting ring surrounds and surrounds the fan assembly;

the second adjustable ring rotates to be connected in the shell, the second adjustable ring encircles and surrounds first adjustable ring, first adjustable ring rotates to be connected the second adjustable ring orientation the inboard of first adjustable ring.

The included angle between the rotating central shaft of the first adjusting ring rotating relative to the second adjusting ring and the rotating central shaft of the second adjusting ring rotating relative to the shell is larger than 0 degree and smaller than 180 degrees.

A desk fan comprises the fan pitching adjusting mechanism in any scheme, wherein the shell is spherical, and the space in the shell is spherical.

The housing includes a first housing and a second housing that are removably connected.

The shell is in a grid shape formed by a plurality of arc-shaped ribs, and gaps between adjacent ribs form the ventilation openings.

A combination desk fan, comprising:

the desk fan of any one of the above aspects;

the base comprises a supporting clamping groove, and the shell is supported on the supporting clamping groove in a matched mode.

The base includes:

and the damping spring is arranged in the supporting clamping groove.

The base includes:

the support clamping groove is arranged on the first support base;

a second support base on which a side of the first support base facing away from the housing is supported;

and the damping ring is clamped between the first supporting base and the second supporting base.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a fan every single move adjustment mechanism, include: the air-permeable fan comprises a shell, wherein a space is formed in the shell, and ventilation openings are distributed in the shell; the fan assembly is rotatably connected in the shell, and the included angle between the rotating central shaft of the fan assembly and the horizontal plane is smaller than 90 degrees.

When the fan assembly wholly takes place to rotate in the shell, there is the contained angle that is less than 90 between its rotation center axle and the horizontal plane, when the contained angle between rotation center axle and the horizontal plane is 0, fan assembly is when the output wind, the angle of blowing rotates along with the fan is whole, consequently the orientation of blowing changes at the horizontal plane within range from top to bottom, thereby form the blowing mode that the every single move was bloied, the in-process of blowing at the every single move can be bloied the space of fan place ahead cover in every single move variation range, when the subscriber station is in fan place ahead, can experience from head to foot and from foot to head of blowing. When the contained angle is the acute angle between rotation center pin and the horizontal plane, when fan assembly took place to rotate, its range of blowing still had the change in the direction of height, still can satisfy the user and experience from foot to foot and from foot to head of blowing. The user also can be according to the demand when the fan moves towards suitable angle, stops the high change of blowing of fan assembly, makes fan assembly blow according to the user's demand orientation.

2. The utility model provides a fan every single move adjustment mechanism still includes: the counterweight frame is rotationally connected to the fan assembly, and a rotating shaft of the counterweight frame is parallel to a rotating central shaft of the fan assembly, or an included angle between the rotating shaft of the counterweight frame and the rotating central shaft of the fan assembly is smaller than 90 degrees; the counterweight motor is arranged on the counterweight frame, and the output end of the counterweight motor is connected with the fan assembly.

The counterweight frame can make fan assembly's center to the offset of counterweight frame direction, under no exogenic action, the counterweight frame can rely on self gravity to balance fan assembly and the whole of counterweight frame, can change the angle between counterweight frame and the fan assembly through the counter weight motor, after counterweight frame and fan assembly are whole for the shell is balanced, the change of fan assembly angle is fan assembly angle change promptly to the realization is through the angle of blowing of counter weight motor automatically regulated fan assembly.

3. The utility model provides a fan every single move adjustment mechanism, fan assembly includes: the base frame is rotationally connected in the shell, and the counterweight frame is rotationally connected to the base frame; the fan blade is rotationally connected to the base frame, a rotation central shaft of the fan blade is perpendicular to a rotation central shaft of the fan assembly, or the rotation central shaft of the fan blade is perpendicular to the rotation central shaft of the fan assembly in space.

The fan blades rotate to output airflow, so that a user feels blowing, and the base frame rotates relative to the shell inside the shell, so that the blowing angle is changed within the height range. The angle between the counterweight frame and the fan assembly is changed through the control of the counterweight motor, the counterweight frame is large in mass, the gravity center of the fan assembly and the counterweight frame is shifted to the counterweight frame, and after the counterweight frame and the fan assembly are rebalanced, the counterweight frame is still in a vertical state, so that the blowing angle of the fan assembly is changed.

4. The utility model provides a fan every single move adjustment mechanism, be equipped with on the pedestal: and the counterweight frame is rotatably connected to the mounting arm.

The installation arm downwardly extending, the counter weight frame is connected on the installation arm, can effectually shift fan assembly and counter weight frame's whole to the counter weight frame direction. The counterweight is arranged on the counterweight frame, so that the weight of the counterweight frame is further increased, the center of the counterweight frame and the whole fan assembly is more stably arranged on the counterweight frame, and the counterweight frame which is rebalanced can still be in a vertical state after the angle of the fan assembly and the counterweight frame is changed.

5. The utility model provides a fan every single move adjustment mechanism, the installation arm has one at least, the output of counter weight motor passes the counter weight frame with the installation arm is connected, be equipped with the confession on the counter weight motor the thru hole that the output of counter weight motor passed.

The counterweight motor is fixed on the inner side of the counterweight frame through a bolt, the output shaft of the counterweight motor penetrates out through the through hole in the left side wall of the counterweight frame, the output shaft of the counterweight motor is not connected with the counterweight frame at the moment, and the counterweight frame is not influenced by the rotation of the output shaft of the counterweight motor. The output shaft of the counterweight motor is connected with the flat position hole of the mounting arm, when the output shaft of the counterweight motor rotates, the mounting arm has a movement trend of synchronous rotation under the influence of the book outlet shaft of the counterweight motor, because the mounting arm is connected on the base frame, the rotating central shaft of the whole base frame is not in the same direction as the output shaft of the counterweight motor,

6. the utility model provides a fan every single move adjustment mechanism, fan every single move adjustment mechanism still includes: the first adjusting ring is arranged in the shell, the fan assembly is rotatably connected to the first adjusting ring, and the first adjusting ring surrounds and surrounds the fan assembly; the second adjustable ring rotates to be connected in the shell, the second adjustable ring encircles and surrounds first adjustable ring, first adjustable ring rotates to be connected the second adjustable ring orientation the inboard of first adjustable ring.

The fan assembly is integrally connected to the first adjusting ring through the base frame in a rotating mode, the fan assembly can rotate relative to the first adjusting ring, the first adjusting ring is rotatably connected to the second adjusting ring, the integral structure formed by the first adjusting ring and the fan assembly can rotate in the second adjusting ring, and when the shell is placed at any angle, the fan assembly can blow towards a user through the automatic adjustment homoenergetic of the counterweight assembly.

7. The utility model also provides a desk fan, including above-mentioned arbitrary scheme fan every single move adjustment mechanism, the shell is spherical, space in the shell is spherical.

The spherical table fan can be placed and used in a soft supporting environment, such as a bed and a soft cushion.

8. The utility model also provides a combination desk fan, include: the desk fan of any one of the above aspects; the base comprises a supporting clamping groove, and the shell is supported on the supporting clamping groove in a matched mode.

The base can cooperate spherical shell, supports the desk fan on the plane, widens the use scene of desk fan, improves user's experience.

9. The utility model provides a combination desk fan, the base includes: and the damping spring is arranged in the supporting clamping groove.

Damping spring contact shell can reduce the vibrations of the outside transmission of table fan working process through the shell, reduces the noise of table fan cooperation during operation on the base.

10. The utility model provides a combination desk fan, the base includes: the support clamping groove is arranged on the first support base; a second support base on which a side of the first support base facing away from the housing is supported; and the damping ring is clamped between the first supporting base and the second supporting base.

The vibration transmitted to the outside through the shell in the working process of the table fan can be reduced, and the noise generated when the table fan is matched on the base to work is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of the combined desk fan structure of the present invention;

FIG. 2 is an exploded view of a structure in which a desk fan is fitted to a base;

FIG. 3 is a cross-sectional view showing a base structure;

FIG. 4 is an enlarged view of the connection structure of the oscillating motor shown at I in FIG. 1;

FIG. 5 is a schematic view showing the mating assembly attachment location;

FIG. 6 is a schematic view showing the mating assembly removed from FIG. 5;

FIG. 7 is an exploded view showing the construction of the counterweight assembly;

FIG. 8 is a schematic view illustrating a top-down blowing configuration of the fan assembly;

FIG. 9 is a schematic view showing a bottom blowing configuration of the fan assembly;

FIG. 10 is an exploded view showing the construction of the housing;

fig. 11 is a perspective view showing the structure of a fan assembly;

FIG. 12 is a perspective view showing a first adjustment ring configuration;

FIG. 13 is a perspective view showing a second adjustment ring configuration;

FIG. 14 is a schematic view of the fan assembly shown in a forward facing position with the housing removed;

FIG. 15 is a sectional view showing the construction of the fan assembly in the state of FIG. 14;

FIG. 16 is a top-down blowing condition of the fan assembly relative to that of FIG. 14;

fig. 17 is a sectional view showing the structure of the fan assembly in the state of fig. 16;

FIG. 18 is a schematic view of a bottom blowing state of the fan assembly relative to the state of FIG. 14;

FIG. 19 is a sectional view showing the construction of the fan assembly in the state of FIG. 18;

fig. 20 is a schematic view of the fan assembly arranged with its rotation axis tilted with respect to the state of fig. 14.

Description of reference numerals:

1. a housing; 11. a first housing; 12. a second housing; 13. a second adjustment shaft; 2. a fan assembly; 21. a fan blade; 22. a first motor; 23. a base frame; 231. a support ring frame; 2311. a first rotating shaft; 2312. assembling a groove; 232. a pedestal; 233. reinforcing ribs; 234. mounting an arm; 2341. a flat position hole; 24. a counterweight frame; 241. A balancing weight; 242. a counterweight motor; 25. a head shaking motor; 251. a drive shaft; 3. a first adjusting ring; 31. A first transmission hole; 32. a first rotation hole; 33. a first adjustment aperture; 4. a second adjusting ring; 41. a first adjustment shaft; 42. a second adjustment aperture; 5. a base; 51. a first support base; 52. a second support base; 53. A damping ring; 54. a damping spring; 55. and supporting the clamping groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a fan pitch adjustment mechanism, as shown in fig. 3, 8, and 9, including: the air-permeable shell comprises a shell 1, wherein a space is formed in the shell 1, and air-permeable openings are distributed on the shell 1; and the fan assembly 2 is rotatably connected in the shell 1, and an included angle between a rotating central shaft of the fan assembly 2 and a horizontal plane is less than 90 degrees. When the fan assembly 2 rotates in the shell 1, an included angle smaller than 90 degrees exists between the rotating central shaft and the horizontal plane, the included angle between the rotating central shaft and the horizontal plane is 0 degree, when the fan assembly 2 outputs wind, the wind blowing angle rotates along with the fan, therefore, the wind blowing direction changes in the upper and lower ranges of the horizontal plane, a wind blowing mode of pitching wind blowing is formed, the space covering the front of the fan in the pitching change range can be blown in the pitching wind blowing process, and when a user stands in front of the fan, the user can feel the wind blowing experience from head to foot and from foot to head. When the contained angle is the acute angle between rotation center pin and the horizontal plane, when fan assembly 2 took place to rotate, its range of blowing still had the change in the direction of height, still can satisfy the user from the foot to the foot and from the foot to the experience of blowing. The user also can be according to the demand when the fan is towards suitable angle, stops the high change of blowing of fan assembly 2, makes fan assembly 2 blow according to the user's demand orientation.

As shown in fig. 3, 8, and 9, the above-described embodiment further includes: the counterweight bracket 24 is rotationally connected to the fan assembly 2, and the rotating shaft of the counterweight bracket 24 is parallel to the rotating central shaft of the fan assembly 2, or the included angle between the rotating shaft of the counterweight bracket 24 and the rotating central shaft of the fan assembly 2 is smaller than 90 degrees; and the counterweight motor 242 is arranged on the counterweight frame 24, and the output end of the counterweight motor 242 is connected with the fan assembly 2. The counterweight frame 24 can make the center of the fan assembly 2 to shift to the counterweight frame 24, under the effect of no external force, the counterweight frame 24 can rely on self gravity to balance the fan assembly 2 and the whole counterweight frame 24, the angle between the counterweight frame 24 and the fan assembly 2 can be changed through the counterweight motor 242, after the counterweight frame 24 and the fan assembly 2 are balanced relative to the shell 1, the change of the angle of the fan assembly 2, namely the blowing angle of the fan assembly 2, is changed, and therefore the blowing angle of the fan assembly 2 is automatically adjusted through the counterweight motor 242. As an alternative embodiment, the blowing angle of the fan assembly 2 may be manually controlled by the user.

As shown in fig. 1, 10, and 11, the fan assembly 2 includes: the base frame 23 is rotationally connected in the shell 1, and the counterweight frame 24 is rotationally connected on the base frame 23; the fan blade 21 is rotatably connected to the base frame 23, a rotation central shaft of the fan blade 21 is perpendicular to a rotation central shaft of the fan assembly 2, or the rotation central shaft of the fan blade 21 is perpendicular to the rotation central shaft of the fan assembly 2 in space. The fan blade 21 rotates to output airflow so that a user feels the blowing, and the base frame 23 rotates relative to the shell 1 in the shell 1 so that the blowing angle changes in a height range. Referring to fig. 8 and 9, the angle between the weight frame 24 and the fan assembly 2 is changed under the control of the weight motor 242, the weight frame 24 has a large mass, the center of gravity of the fan assembly 2 and the weight frame 24 is shifted toward the weight frame 24, and after the weight frame 24 and the fan assembly 2 are rebalanced, the weight frame 24 is still in a vertical state, so that the blowing angle of the fan assembly 2 is changed.

As shown in fig. 5, 6 and 11, the base frame 23 includes: a support ring frame 231 rotatably connected in the housing 1; the shaft bracket 232 is arranged on the support ring bracket 231, and the fan blade 21 is rotatably connected to the shaft bracket 232; the first motor 22 is arranged on the shaft bracket 232, and the output end of the first motor 22 is connected with the fan blade 21. The support ring frame 231 can protect the fan blade 21.

Specifically, as shown in fig. 5 and 11, the bottom of the support ring frame 231 is provided with a first rotating shaft 2311, and with reference to fig. 5 and 12, the first adjusting ring 3 is provided with a first rotating hole 32 adapted to the first rotating shaft 2311, and the support ring frame 231 can rotate in the first rotating hole 32 together with the fan blades and the shaft bracket 232 installed in the support ring frame 231. As an alternative embodiment, as shown in fig. 1 and 11, the first adjusting ring 3 may be omitted and the supporting ring holder 231 may be integrally rotatably coupled to the housing. In the present embodiment, the shaft bracket 232 is located at the center of the support ring bracket 231, and as shown in fig. 5 and 6, the shaft bracket 232 is connected to the support ring bracket 231 through the reinforcing rib 233.

The connection manner of the fan assembly 2 and the housing 1 is not particularly limited, and in this embodiment, the fan assembly 2 is rotatably connected in the housing 1 with reference to fig. 3 and 4. When fan assembly 2 rotates to be connected in shell 1, when fan assembly 2 wholly takes place to rotate for shell 1, the orientation of blowing of 2 output ends of fan assembly changes to the realization is to the air supply of 360 within ranges. As an alternative embodiment, the fan assembly 2 is slidably coupled within the housing while the fan assembly 2 is capable of rotating within the slide, and rotating the fan assembly 2 while the fan assembly 2 is sliding along the slide changes the orientation of the output end of the fan assembly 2 to provide air flow over a 360 ° range. As an alternative embodiment, as shown in fig. 1, 5, 6, 14-19, the fan assembly 2 is integrally and rotatably connected in the first adjusting ring 3, the first adjusting ring 3 is rotatably connected in the second adjusting ring 4, and the rotating shaft of the fan assembly 2 relative to the first adjusting ring 3 is perpendicular to the rotating shaft of the first adjusting ring 3 relative to the second adjusting ring 4. The second adjusting ring 4 can also rotate relative to the casing, and the rotating shaft of the second adjusting ring 4 relative to the casing 1 is perpendicular to the rotating shaft of the first adjusting ring 3 relative to the second adjusting ring 4.

As shown in fig. 3 and 4, in addition to the above-described embodiments, as a more limited embodiment, the fan module 2 is provided with: the oscillating motor 25 is arranged on one of the fan component 2 and the shell 1, and a transmission shaft of the oscillating motor 25 is connected with the other of the fan component 2 and the shell 1. Specifically, fan unit 2 is including the motor 25 of shaking the head, the motor 25 of shaking the head is connected on fan unit 2, the through-hole that the transmission shaft 251 that supplies the motor 25 of shaking the head stretches out has on fan unit 2, transmission shaft 251 connects shell 1 under the state of figure 4, when the motor during operation of shaking the head, because the motor of shaking the head itself connects on fan unit, consequently, the motor 25 of shaking the head sees a whole with fan unit 2, when transmission shaft 251 takes place to rotate, because fan unit rotates and connects on the shell, consequently, the motor of shaking the head drives fan unit wholly takes place to rotate in the shell, thereby realize 360 air supplies.

In addition to the above embodiments, as a further limited embodiment, as shown in fig. 3, 8 and 9, the included angle between the rotation central axis of the fan assembly 2 and the horizontal plane is less than 90 °. When the fan assembly 2 rotates in the shell 1, an included angle smaller than 90 degrees exists between the rotating central shaft and the horizontal plane, the included angle between the rotating central shaft and the horizontal plane is 0 degree, when the fan assembly 2 outputs wind, the wind blowing angle rotates along with the fan, therefore, the wind blowing direction changes in the upper and lower ranges of the horizontal plane, a wind blowing mode of pitching wind blowing is formed, the space covering the front of the fan in the pitching change range can be blown in the pitching wind blowing process, and when a user stands in front of the fan, the user can feel the wind blowing experience from head to foot and from foot to head. When the contained angle is the acute angle between rotation center pin and the horizontal plane, when fan assembly 2 took place to rotate, its range of blowing still had the change in the direction of height, still can satisfy the user from the foot to the foot and from the foot to the experience of blowing. The user also can be according to the demand when the fan is towards suitable angle, stops the high change of blowing of fan assembly 2, makes fan assembly 2 blow according to the user's demand orientation.

Specifically, in this embodiment, as shown in fig. 1, 5, and 6, the whole fan assembly 2 is rotatably connected to the first adjusting ring 3 through the supporting ring frame 231, the top of the first adjusting ring 3 is provided with an assembling groove 2312, the assembling groove 2312 is located on one side of the first adjusting ring 3 facing the fan blade 21, the output end of the oscillating motor 25 is installed toward the assembling groove 2312, the through hole for the transmission shaft 251 to extend out is located in the assembling groove 2312, as shown in fig. 12, the through hole is the first transmission hole 31, the first transmission hole 31 is a flat hole, when the transmission shaft 251 is fitted in the flat hole, the transmission shaft 251 rotates, and can drive the whole fan assembly 2 to rotate relative to the first adjusting ring 3, so as to realize 360-degree rotational air supply.

As a more limited embodiment, in addition to the above-described embodiment, as shown in fig. 5, 6, and 7, the pedestal 232 is provided with: a mounting arm 234, the weight rack 24 being pivotally connected to the mounting arm 234. With reference to fig. 5, 8 and 9, the mounting arm 234 extends downward, and the weight bracket 24 is connected to the mounting arm 234, so that the entire fan assembly 2 and the weight bracket 24 can be effectively transferred toward the weight bracket 24. As shown in fig. 7, the counterweight 241 is disposed on the counterweight frame 24, so as to further increase the weight of the counterweight frame 24, and the center of the integral of the counterweight frame 24 and the fan assembly 2 is more stably located on the counterweight frame 24, thereby ensuring that the rebalanced counterweight frame 24 can still be in a vertical state after the angles of the fan assembly 2 and the counterweight frame 24 are changed as shown in fig. 8 and 9.

On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 5 to 7, at least one of the mounting arms 234 is provided, the output end of the counterweight motor 242 is connected to the mounting arm 234 through the counterweight housing 24, and the counterweight motor 242 is provided with a through hole through which the output end of the counterweight motor 242 passes.

Specifically, as shown in fig. 7, the counterweight motor 242 is fixed inside the counterweight frame 24 by a bolt, and the output shaft of the counterweight motor 242 passes through the through hole on the left side wall of the counterweight frame 24, and at this time, the output shaft of the counterweight motor 242 is not connected to the counterweight frame 24, and the rotation of the output shaft of the counterweight motor 242 does not affect the counterweight frame 24. As shown in fig. 5 and 6, the output shaft of the counterweight motor 242 is connected to the flat position hole 2341 of the mounting arm 234, and at this time, when the output shaft of the counterweight motor 242 rotates, the mounting arm 234 has a movement tendency of synchronous rotation under the influence of the book output shaft of the counterweight motor 242, and since the mounting arm 234 is connected to the base frame 23, the rotation center axis of the whole base frame 23 is not in the same direction as the output shaft of the counterweight motor 242, in this embodiment, in the view of fig. 6, the length direction of the flat position hole 2341 can be regarded as the output shaft of the counterweight motor 242, and at this time, the rotation center axes of the whole counterweight motor 242 and the whole base frame 23 are perpendicular to each other or are perpendicular to each other in space. The mounting arm 234 and the entire base frame 23 do not rotate relative to the casing 1, and the weight frame 24 with the weight motor 242 rotates, so that the weight frame 24 is controlled by the weight motor 242 to rotate relative to the base frame 23, i.e., the fan assembly 2, so that the angle changes shown in fig. 8 and 9 form a downward blowing in fig. 8 and a downward blowing in fig. 9.

As a further limited embodiment, in addition to the above-described embodiments, as shown in fig. 1, 5, and 10 to 13, the fan pitch adjustment mechanism further includes: the first adjusting ring 3 is arranged in the shell 1, the fan assembly 2 is rotatably connected to the first adjusting ring 3, and the first adjusting ring 3 surrounds the fan assembly 2; a second adjusting ring 4 rotatably connected in the housing 1, the second adjusting ring 4 surrounding the first adjusting ring 3, the first adjusting ring 3 rotatably connected in the second adjusting ring 4 toward the inside of the first adjusting ring 3. Under the visual angle of fig. 5, the whole fan assembly 2 is rotatably connected to the first adjusting ring 3 by the base frame 23, the fan assembly 2 can rotate relative to the first adjusting ring 3, the first adjusting ring 3 is rotatably connected to the second adjusting ring 4, the whole structure formed by the first adjusting ring 3 and the fan assembly 2 can rotate in the second adjusting ring 4, and when the housing 1 is placed at any angle, the fan assembly 2 can blow towards a user by the aid of automatic adjustment of the counterweight assembly.

Specifically, with reference to fig. 1, 12 and 13, the left and right sides of the first adjusting ring 3 are provided with first adjusting holes 33, and the second adjusting ring 4 is provided with a first adjusting shaft 41 adapted to the first adjusting holes 33, so that the first adjusting ring 3 is rotatably connected to the second adjusting ring 4. Further, as shown in fig. 13, a second adjusting hole 42 is formed in the second adjusting ring 4, and with reference to fig. 10 and 8, a second adjusting shaft 13 is disposed in the housing, and the second adjusting ring 4 is rotatably connected to the second adjusting shaft 13.

As a more limited embodiment, as shown in fig. 1, 8, 9 and 10, the angle between the central axis of rotation of the first adjusting ring 3 relative to the second adjusting ring 4 and the central axis of rotation of the second adjusting ring 4 relative to the housing 1 is greater than 0 ° and less than 180 °. Specifically, the included angle between the rotation central axis of the first adjusting ring 3 rotating relative to the second adjusting ring 4 and the rotation central axis of the second adjusting ring 4 rotating relative to the housing 1 is 90 °.

In addition to the above embodiments, as a further limited embodiment, as shown in fig. 2, the fan pitch adjustment mechanism according to any one of the above aspects is included, the housing 1 is spherical, and the space inside the housing 1 is spherical. The spherical table fan can be placed and used in a soft supporting environment, such as a bed and a soft cushion.

On the basis of the above embodiments, as a further limited embodiment, as shown in fig. 1 and 10, the housing 1 includes a first housing 11 and a second housing 12 which are detachably connected. In addition to the above-described embodiments, as a further limited embodiment, the housing 1 has a grid shape formed by a plurality of arc-shaped ribs, and gaps between adjacent ribs form the ventilation openings. The desk fan can still blow air to the user through the ventilation opening under any placing condition.

In addition to the above embodiments, as a further limited embodiment, as shown in fig. 1 and 2, the present invention includes: the desk fan of any one of the above aspects; the base 5 comprises a supporting clamping groove 55, and the shell 1 is supported on the supporting clamping groove 55 in a matching mode. The base 5 can cooperate spherical shell 1, supports the desk fan on the plane, widens the use scene of desk fan, improves user's experience.

As shown in fig. 2 and 3, the base 5 includes: and the damping spring 54 is arranged in the supporting clamping groove 55. The damping spring 54 contacts the housing 1, so that the vibration transmitted to the outside through the housing 1 in the working process of the desk fan can be reduced, and the noise generated when the desk fan is matched on the base 5 to work is reduced.

In addition to the above-described embodiments, as a further limited embodiment, as shown in fig. 3, the base 5 includes: the first support base 51, the support clamping groove 55 is arranged on the first support base 51; a second support base 52, on which second support base 52 the side of first support base 51 facing away from housing 1 is supported; and a damper ring 53 interposed between the first support base 51 and the second support base 52. The vibration transmitted to the outside through the shell 1 in the working process of the desk fan can be reduced, and the noise generated when the desk fan is matched on the base 5 to work is reduced.

With reference to fig. 14 to 19, the specific operation of each operation state of the fan assembly 2 according to the present embodiment is further described, and with reference to fig. 14 and 15, the fan assembly faces forward, and at this time, the whole fan assembly 2 can rotate clockwise with respect to the rotation axis L of the fan assembly 2 on the basis of fig. 14, so as to change to the downward blowing state of fig. 16, and the whole fan assembly 2 can also rotate counterclockwise with respect to the rotation axis L of the fan assembly 2 on the basis of fig. 14, so as to change to the downward blowing state of fig. 18. In each of the states of fig. 14 to 19, the fan assembly as a whole rotates relative to the rotational axis L.

Specifically, the fan assembly is mounted on a first adjusting ring 3, the first adjusting ring 3 is rotatably connected to a second adjusting ring 4, and the second adjusting ring 4 is movably connected to the housing 1 in combination with fig. 1-3. Therefore, when the entire fan assembly 2 is rotated relative to the second adjustment ring 4, that is, rotated about the rotation axis L as a rotation center, the blowing direction of the fan assembly 2 is changed in the vertical direction to downward blowing, forward blowing, and upward to the upright position. As an alternative embodiment, referring to fig. 1-3, the first adjusting ring 3 and the second adjusting ring 4 can be removed, the fan assembly 2 can be integrally and rotatably connected to the housing, the rotation axis L can be maintained, the rotation of the fan assembly 2 can be performed by taking the rotation axis L as a rotation center, and the blowing direction of the fan in the vertical direction can be adjusted. As another alternative, as shown in fig. 20, on the basis of fig. 14 to 19, an originally horizontally disposed rotating shaft L is rotated, so that the rotating shaft L, which is integrally rotated by the fan assembly 2, is disposed obliquely, and an included angle α between the rotating shaft L and a horizontal plane is smaller than 90 °, at this time, when the entire fan assembly 2 is rotated relative to the rotating shaft L, the wind output by the fan assembly 2 can still be changed in the blowing height in the vertical direction.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (15)

1. A fan pitch adjustment mechanism, comprising:

the air conditioner comprises a shell (1), wherein a space is formed in the shell (1), and ventilation openings are distributed in the shell (1);

the fan assembly (2) is rotatably connected in the shell (1), and an included angle between a rotating central shaft of the fan assembly (2) and a horizontal plane is smaller than 90 degrees;

the fan assembly (2) is connected in the rotation of counter weight frame (24), the axis of rotation of counter weight frame (24) is on a parallel with the rotation center axle of fan assembly (2), or, the axis of rotation of counter weight frame (24) with the contained angle between the rotation center axle of fan assembly (2) is less than 90.

2. The fan pitch adjustment mechanism of claim 1, further comprising:

the counterweight motor (242) is arranged on the counterweight frame (24), and the output end of the counterweight motor is connected with the fan component (2).

3. The fan pitch adjustment mechanism of claim 2 wherein said fan assembly (2) comprises:

the base frame (23) is rotationally connected in the shell (1), and the counterweight frame (24) is rotationally connected to the base frame (23);

the fan blade (21) is rotationally connected to the base frame (23), the rotating central shaft of the fan blade is perpendicular to the rotating central shaft of the fan assembly (2) or the rotating central shaft of the fan blade is perpendicular to the rotating central shaft of the fan assembly (2) in space.

4. The fan pitch adjustment mechanism of claim 3, wherein the base frame (23) comprises:

a support ring frame (231) which is rotatably connected in the shell (1);

the shaft bracket (232) is arranged on the supporting ring bracket (231), and the fan blade (21) is rotationally connected to the shaft bracket (232);

the first motor (22) is arranged on the shaft bracket (232), and the output end of the first motor (22) is connected with the fan blade (21).

5. The fan pitch adjustment mechanism of claim 4 wherein said pedestal (232) has disposed thereon:

a mounting arm (234), the weight rack (24) being pivotally connected to the mounting arm (234).

6. The fan pitch adjustment mechanism of claim 5 wherein at least one of said mounting arms (234) has an output of said counterweight motor (242) connected to said mounting arm (234) through said counterweight housing (24), said counterweight motor (242) having a through hole through which said counterweight motor (242) output passes.

7. The fan pitch adjustment mechanism of claim 6 wherein said mounting arm (234) is provided with a flat position hole (2341) that fits the output of said counterweight motor (242).

8. The fan pitch adjustment mechanism of any of claims 2-7, further comprising:

the first adjusting ring (3) is arranged in the shell (1), the fan assembly (2) is rotatably connected to the first adjusting ring (3), and the first adjusting ring (3) surrounds the fan assembly (2);

second adjustable ring (4), rotate to be connected in shell (1), second adjustable ring (4) encircle surround first adjustable ring (3), first adjustable ring (3) rotate to be connected second adjustable ring (4) orientation the inboard of first adjustable ring (3).

9. The fan pitch adjustment mechanism of claim 8 wherein the angle between the central axis of rotation of the first adjustment ring (3) relative to the rotation of the second adjustment ring (4) and the central axis of rotation of the second adjustment ring (4) relative to the housing (1) is greater than 0 ° and less than 180 °.

10. A desk fan, its characterized in that: comprising a fan pitch adjustment mechanism according to any of claims 1-9, said housing (1) being spherical and the space inside said housing (1) being spherical.

11. A desk fan as claimed in claim 10, wherein the housing (1) comprises a first shell (11) and a second shell (12) which are detachably connected.

12. A desk fan as claimed in claim 10, wherein the housing (1) is in the form of a grid of a plurality of arcuate ribs, the gaps between adjacent ribs constituting the ventilation openings.

13. A combination desk fan which is characterized in that: the method comprises the following steps:

a table fan as claimed in any one of claims 10 to 12;

the base (5) comprises a supporting clamping groove (55), and the shell (1) is supported on the supporting clamping groove (55) in a matched mode.

14. The combination desk fan of claim 13 wherein: the base (5) comprises:

and the damping spring (54) is arranged in the supporting clamping groove (55).

15. The combination desk fan of claim 13 wherein: the base (5) comprises:

the first supporting base (51), the supporting clamping groove (55) is arranged on the first supporting base (51);

a second support base (52), on which second support base (52) the side of the first support base (51) facing away from the housing (1) is supported;

and a damper ring (53) interposed between the first support base (51) and the second support base (52).

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