CN107269569B - Lifting structure of fan and fan with same - Google Patents
Lifting structure of fan and fan with same Download PDFInfo
- Publication number
- CN107269569B CN107269569B CN201710642813.4A CN201710642813A CN107269569B CN 107269569 B CN107269569 B CN 107269569B CN 201710642813 A CN201710642813 A CN 201710642813A CN 107269569 B CN107269569 B CN 107269569B
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- upright
- upright post
- fan
- screw
- driving mechanism
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- 230000007246 mechanism Effects 0.000 claims abstract description 113
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000003028 elevating effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a lifting structure of a fan and the fan with the same, wherein the lifting structure of the fan comprises: the first upright post and the second upright post are hollow tubular, the lower end of the first upright post extends into the second upright post, one of the first upright post and the second upright post is provided with a first meshing mechanism with external threads, the other one of the first upright post and the second upright post is provided with a second meshing mechanism with internal threads, and the first meshing mechanism and the second meshing mechanism are meshed with each other and can slide along the length direction of the second upright post so as to drive the first upright post to reciprocate in the second upright post; and the driving mechanism is connected with the first meshing mechanism and/or the second meshing mechanism to drive at least one of the first meshing mechanism and the second meshing mechanism to rotate. The lifting structure of the fan is simple in structure and convenient to lift and operate.
Description
Technical Field
The present invention relates to a lifting structure for a fan, and more particularly to a lifting structure for a fan.
Background
The lifting structure of the fan in the related art is complicated, and a user is generally required to manually drive the lifting of the fan, the operation and inconvenience thereof.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a lifting structure of a fan, which is simple in structure and convenient to lift and operate.
The invention also provides a fan with the lifting structure of the fan.
According to an embodiment of the first aspect of the present invention, a lifting structure of a fan includes: the first upright post and the second upright post are hollow tubular, the lower end of the first upright post extends into the second upright post, one of the first upright post and the second upright post is provided with a first meshing mechanism with external threads, the other one of the first upright post and the second upright post is provided with a second meshing mechanism with internal threads, and the first meshing mechanism and the second meshing mechanism are meshed with each other and can slide along the length direction of the second upright post so as to drive the first upright post to reciprocate in the second upright post; and the driving mechanism is connected with the first meshing mechanism and/or the second meshing mechanism to drive at least one of the first meshing mechanism and the second meshing mechanism to rotate.
According to the lifting structure of the fan, the first meshing mechanism with the external threads is arranged on one of the first upright post and the second upright post, the second meshing mechanism with the internal threads is arranged on the other of the first upright post and the second upright post, and the first meshing mechanism and the second meshing mechanism are meshed with each other and can slide along the length direction of the second upright post, so that the height of the fan is adjusted. In addition, through setting up actuating mechanism, through the lift of actuating mechanism drive elevation structure, lift convenient operation can realize the automatic adjustment of fan height.
In addition, the lifting structure of the fan according to the embodiment of the invention can also have the following additional technical characteristics:
According to one embodiment of the invention, the first engagement mechanism comprises a first screw rod connected with the driving mechanism and rotatably arranged in the second upright, and the second engagement mechanism comprises a nut arranged in the first upright and sleeved outside the first screw rod.
Optionally, the driving mechanism includes a first motor disposed at the bottom of the second upright, the first screw is in transmission connection with a motor shaft of the first motor, and the nut is fixed at the bottom of the first upright.
Optionally, a limiting structure is arranged at the top of the first screw, and limits the degree of freedom of upward movement of the nut.
Optionally, a first bearing matched with the first screw rod is arranged in the second upright post.
According to one embodiment of the invention, the first engagement mechanism comprises a second screw rotatably provided at the bottom of the first upright; the second engagement mechanism comprises a sleeve with internal threads, the sleeve is arranged in the second upright, and the second screw rod extends into the sleeve.
Optionally, the driving mechanism comprises a second motor arranged at the top of the first upright, and the second motor is in transmission connection with the second screw rod through a transmission rod arranged in the first upright.
Optionally, a second bearing matched with the transmission rod is arranged at the bottom of the first upright, and the second screw rod is arranged below the second bearing and sleeved at the lower end of the transmission rod.
According to an embodiment of the second aspect of the present invention, a fan includes: a lifting structure, which is the lifting structure according to the embodiment of the first aspect of the present invention; the fan head is arranged at the top of the first upright post; and the controller is connected with the driving mechanism to control the driving mechanism to act.
According to the fan of the second aspect of the present invention, the lifting structure according to the first aspect of the present invention is provided, so that the fan has all the advantages of the lifting structure, and the details are not repeated here.
In addition, the fan according to the embodiment of the invention can also have the following additional technical characteristics:
According to one embodiment of the invention, the fan further comprises a detection device for detecting the height and/or the distance of the human body, the detection device is connected with the controller, and the controller controls the driving mechanism to act through the detection value of the detection device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a lifting structure of a fan according to one embodiment of the present invention;
FIG. 2 is a top view of a first upright of the lift structure of the fan shown in FIG. 1;
FIG. 3 is a schematic view of a fan according to another embodiment of the present invention;
FIG. 4 is a schematic view of a portion of the structure of the fan shown in FIG. 3;
fig. 5 is an enlarged view of the circled structure at a in fig. 3.
Reference numerals:
a lifting structure 100;
A first upright 1;
A second upright 2;
A first screw 31; a nut 32; a first motor 33; a first bearing 34; a stopper 35; a bracket 36; a limit groove 37; a limit clip projection 38;
A second screw 41; a sleeve 42; a second motor 43; a second bearing 44; a transmission rod 45; a first limit switch 46; a second limit switch 47; an end cap 48; a sleeve 49;
A fan 200; a fan head 201; and a mounting cavity 2011.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes the lifting structure 100 of the fan according to the first aspect of the present invention with reference to fig. 1 to 5, and it should be noted that the lifting structure 100 may be used for a desk fan 200, a floor fan 200, a tower fan, etc.
As shown in fig. 1 to 5, the elevating structure 100 of the fan 200 according to the embodiment of the present invention includes: a first upright 1 and a second upright 2.
The first upright 1 and the second upright 2 are hollow tubular, the lower end of the first upright 1 extends into the second upright 2, the fan head 201 is suitable for being arranged at the top of the first upright 1, one of the first upright 1 and the second upright 2 is provided with a first engagement mechanism with external threads, the other of the first upright 1 and the second upright 2 is provided with a second engagement mechanism with internal threads, that is, in some examples, the first upright 1 is provided with a first engagement mechanism with external threads, and the second upright 2 is provided with a second engagement mechanism with internal threads; in other examples, the first upright 1 is provided with a second engagement mechanism having internal threads, and the second upright 2 is provided with a first engagement mechanism having external threads.
The first engagement mechanism and the second engagement mechanism are engaged with each other and can slide along the length direction of the second upright 2 so as to drive the first upright 1 to reciprocate in the second upright 2, specifically, when the first upright 1 is contracted inwards towards the second upright 2, the overall height of the first upright 1 and the second upright 2 is reduced, and at the moment, the height of the fan head 201 is reduced; when the first upright 1 extends toward the outer side of the second upright 2, the overall height of the first upright 1 and the second upright 2 will decrease, and the height of the fan head 201 will increase. The first engagement mechanism and the second engagement mechanism are engaged with each other and can slide along the length direction of the second upright post 2, so that the height of the fan 200 is adjusted, and the fan 200 has a simple structure and is convenient to manufacture. Alternatively, the internal thread and the external thread can be trapezoidal threads, so that the transmission efficiency is high.
The driving mechanism is connected with the first meshing mechanism and/or the second meshing mechanism to drive at least one of the first meshing mechanism and the second meshing mechanism to rotate. I.e. the drive mechanism may be connected to only the first engagement mechanism, or to only the second engagement mechanism, or to both the first engagement mechanism and the second engagement mechanism. When the driving mechanism is only connected with the first meshing mechanism, the driving mechanism can drive the first meshing mechanism to rotate; when the driving mechanism is only connected with the second meshing mechanism, the driving mechanism can drive the second meshing mechanism to rotate; when the driving mechanism is connected with the first meshing mechanism and the second meshing mechanism at the same time, the driving mechanism can drive the first meshing mechanism and the second meshing mechanism to rotate. The driving mechanism drives at least one of the first engagement mechanism and the second engagement mechanism to rotate, so that the first engagement mechanism and the second engagement mechanism can automatically slide along the length direction of the second upright post 2, the lifting operation of the lifting structure 100 is convenient, and the automatic adjustment of the height of the fan 200 can be realized.
According to the lifting structure 100 of the fan 200 in the embodiment of the invention, the first engagement mechanism with external threads is arranged on one of the first upright 1 and the second upright 2, the second engagement mechanism with internal threads is arranged on the other of the first upright 1 and the second upright 2, and the first engagement mechanism and the second engagement mechanism are engaged with each other and can slide along the length direction of the second upright 2, so that the height of the fan 200 is adjusted, the lifting structure 100 is simple in structure, the matching between the internal threads and the external threads has a self-locking function, and a locking mechanism for positioning the first upright 1 can be omitted. In addition, by providing the driving mechanism, the lifting structure 100 is driven to lift by the driving mechanism, so that the lifting operation is convenient, and the automatic adjustment of the height of the fan 200 can be realized.
Two specific embodiments according to the present invention are described below with reference to fig. 1-5.
Example 1
As shown in fig. 1, the first engagement mechanism includes a first screw 31, an external thread is provided on the first screw 31, the first screw 31 is connected with the driving mechanism and is rotatably provided in the second upright 2, that is, the driving mechanism can drive the first screw 31 to rotate, the second engagement mechanism includes a nut 32, an internal thread is provided on the nut 32, and the nut 32 is provided in the first upright 1 and is sleeved outside the first screw 31. Specifically, the nut 32 is disposed in the first upright 1 and is fixedly connected to the first upright 1, for example, the nut 32 is fixedly connected to an inner wall surface of the first upright 1, where "fixing" herein is understood that the nut 32 and the first upright 1 are relatively static, and the nut 32 and the first upright 1 may be a separate structure or an integral structure, and when the nut 32 is in a separate structure, the nut 32 may be interference or transition fit in the first upright 1, or directly welded and connected in the first upright 1.
The nut 32 is sleeved outside the first screw 31, the internal thread of the nut 32 and the external thread of the first screw 31 are engaged with each other, the first screw 31 is driven to rotate by the driving mechanism, so that the nut 32 moves up and down on the first screw 31, and the nut 32 is fixedly connected with the first upright 1, so that the first upright 1 is driven to reciprocate in the second upright 2, and the height of the fan 200 is adjusted.
Preferably, as shown in fig. 1, the top of the first screw 31 is provided with a limit structure which limits the degree of freedom of upward movement of the nut 32, in particular, when the driving mechanism drives the first screw 31 to rotate so that the nut 32 moves upward on the first screw 31 to raise the height of the fan 200, when the nut 32 moves to the position shown in fig. 1, the nut 32 and the limit structure are stopped against each other, at which time the nut 32 cannot move upward, whereby upward movement of the nut 32 to the limit position can be avoided, the driving mechanism does not stop driving in time or the nut 32 is disengaged from the first screw 31 due to factors such as movement inertia of the first screw 31, and thus reliability and stability of the lifting structure 100 during lifting can be improved.
As shown in fig. 1, the limiting structure may be formed as a limiting block 35, at least a portion of the limiting block 35 abuts against the upper end face of the nut 32, and the structural shape of the limiting block 35 may be arbitrarily selected according to actual needs, for example, may be a circle or a polygon.
As shown in fig. 1, the driving mechanism includes a first motor 33 disposed at the bottom of the second upright 2, alternatively, the first motor 33 may be a dc brushless motor or a dc permanent magnet synchronous motor, which has high energy efficiency and low noise, and may realize stepless adjustment of the height of the fan 200, although the application is not limited thereto, and the first motor 33 may also be an ac motor. The first screw 31 is in transmission connection with a motor shaft of the first motor 33, and the driving mechanism is simple in structure and convenient to assemble. A bracket 36 for installing and supporting the first motor 33 may be further provided between the first motor 33 and the bottom wall of the second upright 2, and a controller (not shown) for controlling the operation of the first motor 33 may be provided on the bracket 36, so that the installation of the first motor 33 is simpler and more convenient by providing the bracket 36.
As shown in fig. 1, the nut 32 may be fixed to the bottom of the first stand 1, whereby the range of heights of the fan 200 adjustable by the elevating structure 100 is wider for the same specification of the first stand 1 and the second stand 2.
Further, as shown in fig. 1, a first bearing 34 matched with the first screw 31 is disposed in the second upright 2, specifically, the first bearing 34 is a rolling bearing, an inner ring of the first bearing 34 is fixedly sleeved on an outer wall of the first screw 31, an outer ring of the first bearing 34 is fixedly connected on an inner wall of the second upright 2, and the first bearing 34 plays a role in rotationally supporting the first screw 31, so that a rotation process of the first screw 31 is smoother.
As shown in fig. 1 and 2, the outer wall of the first upright 1 is provided with a limit groove 37 extending along the up-down direction, the second upright 2 is provided with a limit clamp protrusion 38, the limit clamp protrusion 38 is movably clamped in the limit groove 37 along the up-down direction, the first upright 1 is circumferentially limited through the cooperation between the limit groove 37 and the limit clamp protrusion 38, the first upright 1 can only reciprocate in the second upright 2 along the axial direction of the second upright 2 and cannot circumferentially rotate relative to the second upright 2, and therefore the stability of the lifting structure 100 in the lifting process can be further improved.
Of course, in other examples of the present invention, the outer wall of the first upright 1 is provided with a limiting rib (not shown) extending along the up-down direction, the second upright 2 is provided with a limiting slot (not shown), the limiting rib is matched in the limiting slot, and the limiting slot can move along the length direction of the limiting rib, and similarly, through the matching between the limiting rib and the limiting slot, the first upright 1 plays a role in circumferential limiting, and the first upright 1 can only reciprocate in the up-down direction in the second upright 2 and cannot rotate circumferentially relative to the second upright 2, so that the stability of the lifting structure 100 in the lifting process can be further improved.
Example two
As shown in fig. 3 to 4, the first engagement mechanism includes a second screw 41, the second screw 41 is rotatably disposed at the bottom of the first upright 1, an external thread is disposed on the second screw 41, the second engagement mechanism includes a sleeve 42 having an internal thread, the sleeve 42 is disposed in the second upright 2, specifically, the sleeve 42 is fixed in the second upright 2, that is, the sleeve 42 and the second upright 2 are relatively stationary, the sleeve 42 and the second upright 2 may be formed as a separate piece, or may be formed as an integral piece, when the sleeve 42 and the second upright 2 are formed as separate pieces, the sleeve 42 may be interference fit or transition fit in the second upright 2, for example, the second upright 2 may be sleeved on the outer wall of the sleeve 42 through a hot jacket or the like, and of course, the sleeve 42 may be fixed in the second upright 2 by a welded connection. The second screw 41 extends into the sleeve 42 such that the external threads on the second screw 41 and the internal threads in the sleeve 42 intermesh. The driving mechanism may be connected to the second screw 41 to drive the second screw 41 to rotate, thereby allowing the second screw 41 to move up and down in the sleeve 42 by the rotation of the second screw 41, and since the second screw 41 is disposed at the bottom of the first stand column 1, the second screw 41 moves up and down in the sleeve 42, thereby driving the first stand column 1 to reciprocate in the second stand column 2, so as to achieve the adjustment of the height of the fan 200.
Further, as shown in fig. 3 to 4, the driving mechanism includes a second motor 43 disposed on the top of the first upright 1, alternatively, the second motor 43 may be a dc brushless motor or a dc permanent magnet synchronous motor, with high energy efficiency and low noise, and may realize stepless adjustment of the height of the fan 200, although the application is not limited thereto, and the second motor 43 may be an ac motor. The second motor 43 is in driving connection with the second screw 41 through a driving rod 45 arranged inside the first upright 1, specifically, the driving rod 45 is arranged inside the first upright 1, the driving rod 45 is rotatable inside the first upright 1, the upper end of the driving rod 45 is in driving connection with a motor shaft of the second motor 43, the lower end of the driving rod 45 extends out of the first upright 1 and is fixedly connected with the second screw 41, for example, as shown in fig. 2, the second screw 41 is fixedly sleeved at the lower end of the driving rod 45, wherein the term "fixing" as used herein can be understood that the second screw 41 and the driving rod 45 are relatively stationary. The second motor 43 drives the transmission rod 45 to rotate, thereby driving the second screw 41 to rotate, and the second screw 41 moves up and down in the sleeve 42 by the rotation of the second screw 41.
Alternatively, as shown in fig. 3 to 4, the bottom of the first upright 1 is provided with a second bearing 44 cooperating with a transmission rod 45, and the second screw 41 is provided below the second bearing 44 and sleeved at the lower end of the transmission rod 45. Specifically, the second bearing 44 may be a rolling bearing, the inner ring of the second bearing 44 is fixedly sleeved on the outer wall of the driving rod 45, the outer ring of the second bearing 44 is fixedly connected with the bottom of the first upright 1, the second bearing 44 plays a role in rotationally supporting the driving rod 45, and the rotation process of the driving rod 45 is more stable, so that the stability and reliability of the lifting process of the lifting structure 100 are improved.
The fan 200 according to the embodiment of the second aspect of the present invention includes the elevating structure 100 according to the embodiment of the first aspect of the present invention described above, the fan head 201, and a controller (not shown). The fan head 201 is arranged at the top of the first upright 1, and the controller is connected with the driving mechanism to control the driving mechanism to act, so that the automatic adjustment of the height of the fan 200 is realized, and the operation is simple and convenient.
According to the fan 200 of the embodiment of the present invention, the lifting structure 100 of the fan 200 according to the above-mentioned first embodiment of the present invention is provided, so that the fan 200 has all the advantages of the lifting structure 100, which are not described herein.
Optionally, the user side may send a control signal to the controller through a keyboard, a remote controller, a voice control or a mobile phone APP, etc., and the controller controls the driving mechanism to act according to the received signal to adjust the height of the fan head 201
It will be appreciated that the user's desired height of the fan head 201 of the fan 200 is related to factors such as the height of the human body and the distance of the human body from the fan 200. For example, when the human body is higher and the distance from the human body to the fan 200 is greater, the user's desired height of the fan head 201 of the fan 200 is also higher; when the human body is shorter and the distance of the human body from the fan 200 is smaller, the user's desired height of the fan head 201 of the fan 200 is also lower.
In a preferred embodiment of the invention, the fan 200 further comprises detection means (not shown) for detecting the height and/or distance of the person, alternatively the detection means may be a human infrared sensor, an ultrasonic detector, a microwave detection radar, etc. The detection device is connected with the controller, and the controller controls the action of the driving mechanism through the detection value of the detection device. For example, when the detecting device detects that the height of the human body is higher or the farther the human body is from the fan 200, the human body height or distance signal detected by the detecting device is transmitted to the controller, and the controller controls the driving mechanism to drive the first upright 1 to move outwards (upwards as shown in fig. 1-5) in the second upright 2 according to the received human body height or distance information, so that the overall height of the first upright 1 and the second upright 2 is increased, and the height of the fan head 201 is increased; when the controller detects that the human body height is low or the human body is close to the fan 200, the detection device transmits the detected human body height signal or distance signal to the controller, and the controller controls the driving mechanism to drive the first upright 1 to move inwards (downwards as shown in fig. 1-5) in the second upright 2 according to the received human body height or distance information, so that the overall height of the first upright 1 and the second upright 2 is reduced, and the height of the fan head 201 is reduced.
By providing the detection device for detecting the height and/or distance of the human body, the height adjustment of the fan 200 is more automatic and intelligent, and the fan can be suitable for children, old people with inconvenient hands and feet, physically disabled people (such as blind people or people with handicapped hands and feet), and the like.
Optionally, the controller also has a braking function, and when the first upright 1 moves to the limit position, the controller can automatically brake the driving mechanism, thereby ensuring reliability and safety in the process of adjusting the height of the fan 200.
For example, in a specific example of the present invention, as shown in fig. 3 to 5, a first limit switch 46 is disposed above the second screw 41, and a second limit switch 47 is disposed on the bottom of the second upright 2, alternatively, the first limit switch 46 and the second limit switch 47 may be both tact switches, and both the first limit switch 46 and the second limit switch 47 are electrically connected to the controller. When the first upright 1 moves upwards to the limit position, the first limit switch 46 contacts with the top wall of the second upright 2, the first limit switch 46 is triggered, a signal is sent to the controller, and the controller controls the driving mechanism to stop according to the received signal; when the first upright 1 moves downwards to the limit position, the second limit switch 47 will touch the second screw 41, the second limit switch 47 is triggered, a signal is sent to the controller, and the controller controls the driving mechanism to stop according to the received signal.
Of course, the present application is not limited thereto, and the first limit switch 46 may be disposed on the top wall of the second upright 2, and the second limit switch 47 may be disposed on the bottom of the second screw 41.
Further, referring to fig. 4, an end cover 48 is disposed at the bottom of the transmission rod 45, when the first upright 1 moves down to the limit position, the end cover 48 will touch the second limit switch 47 disposed at the bottom of the second upright 2, so as to avoid the second screw 41 directly touching the second limit switch 47, if the second screw 41 directly touches the second limit switch 47 in the rotating state, the second screw 41 is not only worn seriously, but also may damage the second limit switch 47, and by disposing the end cover 48, the second screw 41 and the second limit switch 47 can be prevented from directly touching, thereby improving the reliability of the lifting process of the fan 200. The end cap 48 may form a plate-like structure, whereby the second limit switch 47 may be better activated when the first upright 1 is moved down to the extreme position.
With continued reference to fig. 4, a shaft sleeve 49 matched with the transmission rod 45 is further disposed between the second bearing 44 and the second screw 41, the shaft sleeve 49 is fixedly connected with the outer ring of the second bearing 44, and the first limit switch 46 is disposed on the upper end surface of the shaft sleeve 49, so that not only is the installation of the first limit switch 46 more convenient, but also the first limit switch 46 can be prevented from following the rotation of the second screw 41, and if the first limit switch 46 is in a rotating state and directly contacts with the top wall of the second upright post 2, the wear is serious, and even the first limit switch 46 can be damaged, and the reliability of the lifting process of the fan 200 can be improved by arranging the shaft sleeve 49.
As shown in fig. 4, the bottom of the fan head 201 is provided with a mounting cavity 2011 for mounting the second motor 43, the bottom wall of the mounting cavity 2011 is provided with a perforation, and the top end of the transmission rod 45 extends into the mounting cavity 2011 through the perforation to be in transmission connection with the motor shaft of the second motor 43.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. A lifting structure of a fan, comprising:
The first upright post and the second upright post are hollow tubular, the lower end of the first upright post extends into the second upright post,
The first upright post and the second upright post are meshed with each other and can slide along the length direction of the second upright post so as to drive the first upright post to reciprocate in the second upright post;
The driving mechanism is connected with the first meshing mechanism and/or the second meshing mechanism to drive at least one of the first meshing mechanism and the second meshing mechanism to rotate;
the outer wall of the first upright post is provided with a limiting groove extending along the up-down direction, the second upright post is provided with a limiting clamp protrusion, and the limiting clamp protrusion is movably clamped in the limiting groove along the up-down direction;
the first meshing mechanism comprises a second screw rod, and the second screw rod is rotatably arranged at the bottom of the first upright post;
The second engagement mechanism comprises a sleeve with internal threads, the sleeve is arranged in the second upright, and the second screw rod extends into the sleeve;
The bottom of the first upright post is provided with a second bearing matched with the transmission rod in the first upright post, and the second screw rod is arranged below the second bearing and sleeved at the lower end of the transmission rod;
A first limit switch is arranged above the second screw rod, and a second limit switch is arranged at the bottom of the second upright post;
And a shaft sleeve matched with the transmission rod is further arranged between the second bearing and the second screw rod, the shaft sleeve is fixedly connected with the outer ring of the second bearing, and the first limit switch is arranged on the upper end surface of the shaft sleeve.
2. The lifting structure of a fan as claimed in claim 1, wherein the driving mechanism comprises a second motor provided at the top of the first upright, and the second motor is in driving connection with the second screw through a driving rod provided inside the first upright.
3. A fan, comprising:
the lifting structure according to any one of claims 1-2;
the fan head is arranged at the top of the first upright post;
And the controller is connected with the driving mechanism to control the driving mechanism to act.
4. A fan according to claim 3, further comprising a detection device for detecting the height and/or distance of the person, wherein the detection device is connected to the controller, and the controller controls the driving mechanism to operate by the detection value of the detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642813.4A CN107269569B (en) | 2017-07-31 | 2017-07-31 | Lifting structure of fan and fan with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642813.4A CN107269569B (en) | 2017-07-31 | 2017-07-31 | Lifting structure of fan and fan with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269569A CN107269569A (en) | 2017-10-20 |
| CN107269569B true CN107269569B (en) | 2024-05-17 |
Family
ID=60075467
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019192091A1 (en) * | 2018-04-02 | 2019-10-10 | Ye Hongzhao | Electric fan column |
| CN109114032A (en) * | 2018-08-07 | 2019-01-01 | 珠海格力电器股份有限公司 | A kind of control method of electric fan, device, storage medium and electric fan |
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| CN204553284U (en) * | 2015-01-04 | 2015-08-12 | 艾美特电器（九江）有限公司 | A kind of lowering or hoisting gear of fan and the liftable fan of a kind of head |
| CN105831950A (en) * | 2016-05-11 | 2016-08-10 | 京东方科技集团股份有限公司 | Electric hair drier control device, electric hair drier assembly and electric hair drier control method |
| CN207333264U (en) * | 2017-07-31 | 2018-05-08 | 广东美的环境电器制造有限公司 | The lifting structure of fan and there is its fan |
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| JPH07180693A (en) * | 1993-12-21 | 1995-07-18 | Utec:Kk | Human body detecting fan |
| CN202301089U (en) * | 2011-09-23 | 2012-07-04 | 霍树添 | Upright column type fan for large angle air supply |
| CN202301130U (en) * | 2011-09-23 | 2012-07-04 | 霍树添 | Electrically blowing height-adjustable upright type fan |
| CN103216458A (en) * | 2013-05-08 | 2013-07-24 | 昆山奕昕电机科技有限公司 | Automatic elevating electric fan and elevating mechanism thereof |
| CN203336172U (en) * | 2013-06-28 | 2013-12-11 | 张晶 | Lifting device of display screen |
| CN204553284U (en) * | 2015-01-04 | 2015-08-12 | 艾美特电器（九江）有限公司 | A kind of lowering or hoisting gear of fan and the liftable fan of a kind of head |
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| CN107269569A (en) | 2017-10-20 |
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