CN215672819U - Lifting mechanism and fan - Google Patents

Abstract

The utility model relates to a lifting mechanism and a fan, which comprise a pipe body and an adjusting component, wherein the pipe body comprises a fixed section and a rotating section, one of the fixed section and the rotating section is sleeved on the other of the fixed section and the rotating section, and the fixed section and the rotating section can be controlled to generate relative rotating motion, namely the fixed section can rotate relative to the rotating section, and the rotating section can also rotate relative to the fixed section. The adjusting component comprises a telescopic body and an adjusting piece, the telescopic body is sleeved in the innermost layer of the fixed section or the rotating section, and the adjusting piece protrudes out of the telescopic body along the axial direction of the pipe body. Wherein, one of the fixed section and the rotating section which generates the rotating motion is provided with a lifting groove along the axial direction of the pipe body, and the other one is provided with a thread groove which surrounds the circumferential direction of the pipe body and extends along the axial direction of the pipe body; the regulating part inlays simultaneously and locates in thread groove and the lift inslot, and regulating assembly follows rotatory synchronous revolution to keep the regulating part along thread groove rotation in a circumferential direction and synchronous along the axial lift of lift inslot, and then improved user's use and experienced the sense.

Description

Lifting mechanism and fan

Technical Field

The utility model relates to the technical field of household appliances, in particular to a lifting mechanism and a fan.

Background

An electric fan, also called fan and fan blower for short, is a household appliance which uses a motor to drive fan blades to rotate so as to accelerate the circulation of air, is mainly used for cooling, relieving summer heat and circulating air, and is widely used in places such as families, classrooms, offices, shops, hospitals, hotels and the like.

At present, in the market, a common fan does not have a height adjusting function, and a small part of fans with the height adjusting function basically adopt a form of adding gears by coil springs or a form of adopting set screws to adjust and fix the height of a lifting rod.

However, the traditional adjusting mode has extremely limited adjusting positions, can only adjust to the designated position, and cannot meet all adjusting requirements of customers, so that the use experience of the lifting function is influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

Based on this, this application is experienced the not good problem of sense to current fan raising and lowering functions, has provided a elevating system and fan, and this elevating system and fan have arbitrary height-adjustable can fix, use to experience the technological effect who feels good.

A lift mechanism comprising:

the tube body is provided with a fixed section and a rotating section, one of the fixed section and the rotating section is sleeved on the other of the fixed section and the rotating section, and the fixed section and the rotating section can be controlled to generate relative rotating motion;

the adjusting assembly comprises a telescopic body and an adjusting piece, the telescopic body is sleeved in the innermost layer of the fixed section or the rotating section, and the adjusting piece protrudes out of the telescopic body along the direction axially crossed with the pipe body;

wherein, one of the fixed section and the rotating section which generates the rotating motion is provided with a lifting groove along the axial direction of the pipe body, and the other one is provided with a thread groove which surrounds the circumferential direction of the pipe body and extends along the axial direction of the pipe body; the adjusting piece is simultaneously embedded in the thread groove and the lifting groove, the adjusting component synchronously rotates along with the rotation of the thread groove, and the adjusting piece is kept to rotate along the circumferential direction of the thread groove and synchronously lift along the axial direction of the lifting groove.

In one embodiment, one of the fixed section and the rotating section, which generates the rotating motion, is further provided with a first locking groove and a second locking groove along the circumferential direction of the pipe body, and the first locking groove and the second locking groove are arranged at two axial ends of the one which generates the rotating motion and are both communicated with the lifting groove;

when the telescopic body is completely accommodated or completely extends out of one of the fixed section and the rotating section to generate rotating motion, the adjusting piece is respectively locked in the first locking groove or the second locking groove.

In one embodiment, the tubular body comprises at least two snap-locks formed in the first and/or second locking grooves;

one end of each elastic buckle is connected with the inner wall of the groove corresponding to the first locking groove or the second locking groove, and the other end of each elastic buckle extends towards the lifting groove in a hanging mode, so that the adjusting piece is formed into an inlet and an outlet of the lifting groove, wherein the inlet and the outlet of the first locking groove or the second locking groove are formed in the adjusting piece.

In one embodiment, the fixed section is sleeved outside the rotating section, and the telescopic body is sleeved inside the rotating section;

the adjusting piece is along the radial protrusion of body in outside flexible this body to along the circumference of body is spacing in the lift inslot and simultaneously along the axial of body is spacing in the thread groove.

In one embodiment, the thread groove is a double-thread groove formed on an inner wall of the fixing section.

In one embodiment, the telescopic body comprises a first section which is telescopically accommodated in the rotating section; and the diameter of the excircle of the first section is smaller than the diameter of the inner hole of the rotating section.

In one embodiment, the telescopic body further comprises a second section, the second section is connected with one end of the first section and is positioned at one end far away from the first section and extending out of the rotating section;

and the second section is provided with a threaded hole, and the adjusting piece is in threaded connection with the threaded hole.

In one embodiment, the two adjusting pieces are in threaded connection with two opposite ends of the second section along a direction axially intersecting with the pipe body;

the lifting groove and the thread groove also comprise two adjusting pieces, and one adjusting piece is embedded in one thread groove and one lifting groove.

In one embodiment, the rotating section further includes an operating portion provided to protrude relative to the fixed section on one side in the axial direction of the pipe body.

According to another aspect of the present application, there is provided a fan comprising the lifting mechanism provided in any of the above embodiments.

Above-mentioned elevating system, including body and adjusting part, the body includes canned paragraph and rotation segment, and one cover in canned paragraph and the rotation segment is located on the other, and can be controlled between the two and produce relative rotary motion, and the canned paragraph can be rotatory for the rotation segment promptly, and the rotation segment also can be rotatory for the canned paragraph. The adjusting component comprises a telescopic body and an adjusting piece, the telescopic body is sleeved in the innermost layer of the fixed section or the rotating section, and the adjusting piece protrudes out of the telescopic body along the axial direction of the pipe body. Wherein, one of the fixed section and the rotating section which generates the rotating motion is provided with a lifting groove along the axial direction of the pipe body, and the other one is provided with a thread groove which surrounds the circumferential direction of the pipe body and extends along the axial direction of the pipe body; the adjusting piece is simultaneously embedded in the thread groove and the lifting groove, the adjusting component synchronously rotates along with the rotation, and the adjusting piece is kept to rotate along the circumferential direction of the thread groove and synchronously lift along the axial direction of the lifting groove. So, highly adjusting elevating system as needs, stabilize one of them of fixed section and rotation segment, operate one of them another of fixed section and rotation segment, make it drive adjusting part follow the rotation, in flexible body rotation, the regulating part is along the circumferential direction of thread groove and synchronous axial lift along the lift groove, thereby stretch out from the body along the axial direction of body gradually in making flexible body rotation, realize the adjustment of height, in accommodation process, under the dual spacing of lift groove and thread groove, the regulating part can stop at the optional position, flexible body also can be fixed in the optional position promptly, make the elevating system that this embodiment provided, can bring arbitrary height-adjustable fixable's technological effect, and then the use experience that has improved the user is felt.

Drawings

Fig. 1 is an exploded schematic view of a lifting mechanism according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a rotating section of the elevating mechanism provided in FIG. 1;

FIG. 3 is a schematic structural view of a stationary section of the lifting mechanism provided in FIG. 1;

FIG. 4 is a schematic structural view of the telescoping body of the lifting mechanism provided in FIG. 1;

FIG. 5 is a schematic view of the adjustment member of the lifting mechanism provided in FIG. 1;

fig. 6 is a schematic structural view of a fixing ring of the lifting mechanism provided in fig. 1.

Reference numerals: 100. a lifting mechanism; 10. a fixed section; 11. a thread groove; 20. a rotating section; 21. a lifting groove; 22. a first locking groove; 23. a second locking slot; a: snapping; 24. an operation section; 30. a telescopic body; 31. a first stage; 32. a second stage; 321. a threaded hole; 40. an adjustment member; 41. a threaded segment; 50. and (4) fixing the ring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 4, an embodiment of the present application provides a lifting mechanism 100, a pipe body and an adjusting assembly, wherein the pipe body includes a fixed section 10 and a rotating section 20, one of the fixed section 10 and the rotating section 20 is sleeved on the other, and the fixed section 10 and the rotating section 20 can be controlled to generate a relative rotation motion therebetween, that is, the fixed section 10 can rotate relative to the rotating section 20, and the rotating section 20 can also rotate relative to the fixed section 10. The adjusting component comprises a telescopic body 30 and an adjusting piece 40, the telescopic body 30 is sleeved in the innermost layer of the fixed section 10 or the rotating section 20, and the adjusting piece 40 protrudes out of the telescopic body 30 along the direction which is axially crossed with the pipe body. Wherein, one of the fixed section 10 and the rotating section 20 which generates the rotation motion is provided with a lifting groove 21 along the axial direction of the pipe body, and the other one is provided with a thread groove 11 which surrounds the circumferential direction of the pipe body and extends along the axial direction of the pipe body; the adjusting piece 40 is simultaneously embedded in the thread groove 11 and the lifting groove 21, the adjusting piece rotates synchronously along with the rotation of the thread groove 11, and the adjusting piece 40 is kept to rotate along the circumferential direction of the thread groove 11 and synchronously lift along the axial direction of the lifting groove 21. Thus, when the height of the lifting mechanism 100 needs to be adjusted, one of the fixed section 10 and the rotating section 20 is stabilized, and the other of the fixed section 10 and the rotating section 20 is operated to drive the adjusting component to rotate. When the telescopic body 30 rotates, the adjusting member 40 rotates along the circumferential direction of the thread groove 11 and synchronously ascends and descends along the axial direction of the ascending and descending groove 21, so that the telescopic body 30 gradually extends out of the pipe body along the axial direction of the pipe body while rotating, and the height is adjusted. During the adjustment process, under the double limit of the lifting groove 21 and the thread groove 11, the adjusting member 40 can stop at any position, i.e. the telescopic body 30 can be fixed at any position. The lifting mechanism 100 provided by the embodiment can bring the technical effect of adjustable and fixable height, and further improves the use experience of the user.

Understandably, the circumferential rotation motion and the axial linear motion of the telescopic body 30 are realized simultaneously through the rotation motion of the fixed section 10 and the rotating section 20 and the limit of the lifting groove 21 and the thread groove 11, the adjusting action is simple and accords with ergonomics, and only the rotation action is needed, so that the telescopic body is light and labor-saving. And only sliding friction exists between the telescopic body 30 and the rotating section 20 and between the rotating section 20 and the fixed section 10, so that the service life of the lifting mechanism 100 is greatly prolonged.

Referring to fig. 3, in one embodiment, one of the fixed section 10 and the rotating section 20, which generates the rotating motion, is further provided with a first locking groove 22 and a second locking groove 23 along the circumferential direction of the pipe body, and the first locking groove 22 and the second locking groove 23 are provided at both axial ends of the one which generates the rotating motion and are both communicated with the lifting groove 21. When the telescopic body 30 is completely accommodated or completely extends out of one of the fixed section 10 and the rotating section 20 to generate rotating motion, the adjusting piece 40 is respectively locked in the first locking groove 22 or the second locking groove 23, at the moment, the telescopic body 30 is in a limit state, the relative pipe body has the maximum extending length or the minimum extending length, the adjusting piece 40 is locked in the first locking groove 22 or the second locking groove 23, and therefore the limit state of the telescopic body 30 is limited and locked.

Preferably, in this embodiment, the first locking groove 22, the lifting groove 21 and the second locking groove 23 define a zigzag structure, the lifting groove 21 greatly limits the linear motion of the telescopic body 30, and the first locking groove 22 and the second locking groove 23 realize the limit state fixation, so that the whole adjustment process of the lifting mechanism 100 can be limited.

Referring to fig. 3, in particular, the pipe body includes at least two snap buttons a, and the snap buttons a are disposed in the first locking groove 22 and the second locking groove 23, and are formed in the first locking groove 22 and/or the second locking groove 23. One end of each spring buckle a is connected with the inner wall of the corresponding first locking groove 22 or second locking groove 23, and the other end of each spring buckle a extends in the air towards the lifting groove 21, so that an inlet and an outlet of the adjusting piece 40 entering and exiting from the first locking groove 22 or second locking groove 23 through the lifting groove 21 are formed. When the adjusting piece 40 is located the first locking groove 22, one of the rotation fixing section 10 or the rotation section 20 drives the adjusting piece 40 to leave the first locking groove 22 from the entrance and exit and enter the lifting groove 21, at this time, the telescopic body 30 makes a linear motion under the cooperation of the adjusting piece 40 and the lifting groove 21 until moving to the end close to the second locking groove 23, one of the rotation fixing section 10 or the rotation section 20 drives the adjusting piece 40 to leave the lifting groove 21 from the entrance and exit and enter the second locking groove 23, and then, all adjusting processes are completed.

In some embodiments, the fixing section 10 is sleeved outside the rotating section 20, the telescopic body 30 is sleeved inside the rotating section 20, the fixing section 10 is an outer tube, the rotating section 20 is an inner tube, the outer tube is sleeved on the inner tube, the telescopic body 30 is a telescopic tube, and the fixing section 10 is operated to be fixed, so that the rotating section 20 is controlled to rotate to drive the telescopic body 30 to rotate synchronously, and the telescopic body 30 gradually extends out of the rotating section 20 along the axial direction of the tube body while rotating. In other embodiments, the rotating section 20 is sleeved outside the fixing section 10, the telescopic body 30 is sleeved inside the fixing section 10, the fixing section 10 is operated to be fixed at the moment, the rotating section 20 is controlled to rotate to drive the telescopic body 30 to rotate synchronously, and the telescopic body 30 gradually extends out of the rotating section 20 along the axial direction of the pipe body while rotating, so that the present application can be realized.

Referring to fig. 2, when the fixing section 10 is sleeved on the rotating section 20, the fixing section 10 is provided with a thread groove 11 facing the inner wall of the rotating section 20, the rotating section 20 is provided with a first locking groove 22, a lifting groove 21 and a second locking groove 23 which are communicated with each other, the adjusting piece 40 protrudes out of the telescopic body 30 along the radial direction of the pipe body, and is limited in the lifting groove 21 along the circumferential direction of the pipe body and is limited in the thread groove 11 along the axial direction of the pipe body in the lifting process. Like this, in the regulation process, regulating part 40 atress can be removed in thread groove 11, and regulating part 40 atress can be locked at the optional position of thread groove 11 to realize the auto-lock of optional position in the flexible within range, make the elevating system 100 that this application provided can be adjusted and locked after arbitrary height.

It is understood that the maximum distance that the adjusting member 40 moves in the axial direction in the lifting groove 21 is the maximum adjusting distance that the lifting mechanism 100 can achieve.

In one embodiment, the thread groove 11 is a double-thread groove formed on the inner wall of the fixing section 10, and the adjusting member 40 can be locked at any position of the double-thread groove when the lead angle of the double-thread groove satisfies the self-locking adjustment.

Referring to fig. 3, in one embodiment, the rotating section 20 further includes an operating portion 24, and one side of the operating portion 24 in the axial direction of the tube body is protruded relative to the fixed section 10 to form a handle position. When it is necessary to operate the rotating section 20 to rotate, a person holds the operating part 24 by hand, thereby applying a force to the rotating section 20 so that the rotating section 20 can rotate relative to the fixed section 10.

Referring to fig. 4, in one embodiment, the telescopic body 30 includes a first section 31, the first section 31 is telescopically received in the rotating section 20 and can be completely retracted into or completely extended out of the rotating section 20, an outer diameter of the first section 31 is smaller than an inner diameter of the rotating section 20, and the first section 31 is inserted into the rotating section 20 and is in clearance fit with the rotating section 20, so as to ensure smoothness of relative sliding.

Referring to fig. 4 and 5, in one embodiment, the telescopic body 30 further includes a second section 32, the second section 32 is connected to one end of the first section 31, and the end of the second section 32 far from the first section 31 and extending out of the rotating section 20 is attached to the rotating section 20, the adjusting member 40 includes a threaded section 41, a threaded hole 321 is formed in the second section 32, the adjusting member 40 is connected to the threaded hole 321 through the threaded section 41, and the adjusting member 40 is driven in this way, so that the adjusting member 40 and the telescopic body 30 are connected into a whole.

In one embodiment, the adjusting members 40 comprise two, and two adjusting members 40 are screwed with the opposite ends of the second section 32 along the direction intersecting the axial direction of the pipe body. Lifting groove 21 and thread groove 11 also all include two, and an adjusting part 40 inlays simultaneously in a thread groove 11 and a lifting groove 21 to the motion to adjusting part 40 is injectd, thereby guarantees that adjusting part can smooth the rotation.

Referring to fig. 6, in one embodiment, the lifting mechanism 100 further includes a fixing ring 50, and the fixing ring 50 is connected to the rotating section 20 such that the fixing section 10 is completely constrained between the end surface of the fixing ring 50 and the operating portion 24 of the rotating section 20 in the axial direction, thereby completely fixing the lifting mechanism 100.

On the other hand, this application still provides a fan, including the elevating system 100 that provides in any above-mentioned embodiment, elevating system 100 can realize that the fuselage is adjustable to it can fix to have realized that the fan is arbitrary highly adjustable, has satisfied people to the demand that the fan height was adjusted at will, has improved and has used experience.

Simultaneously, because the fan that this application provided, the motion is simple, and it is convenient to adjust, can avoid the mechanical conflict between the various structures simultaneously, consequently, can prolong the life of fan when using, avoids damaging.

The application provides a lifting mechanism 100 and fan, specifically adjusts the step as follows:

(1) the telescopic body 30 is completely accommodated in the rotating section 20, and the adjusting piece 40 is locked in the first locking groove 22, at this time, the lifting mechanism 100 is at the shortest adjusting height;

(2) holding the fixing section 10 with one hand and the operating section 24 with the other hand, and rotating the rotating section 20 in one direction in a direction away from the latch a, so that the operating section 24 is separated from the first locking groove 22 from the entrance and exit position of the first locking groove 22 and enters the lifting groove 21;

(3) the adjusting piece 40 is located in the lifting groove 21, the rotating section 20 drives the adjusting piece 40 to rotate, the adjusting piece 40 drives the telescopic body 30 to move, the adjusting piece 40 rotates synchronously along with the rotating section 20, and the adjusting piece 40 is kept to rotate along the circumferential direction of the thread groove 11 and lift axially along the lifting groove 21 synchronously, so that the telescopic body 30 is gradually extended out of the rotating section 20;

(4) as the telescopic body 30 is gradually extended, the adjusting member 40 moves in the lifting groove 21 to the end of the lifting groove 21 close to the second locking groove 23, and the rotating section 20 is rotated in one direction in the direction close to the latch a, so that the operating part 24 enters the second locking groove 23 from the entrance and exit position of the second locking groove 23 and is locked, and the lifting mechanism 100 is at the longest adjusting height at this time.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A lift mechanism, comprising:

the pipe comprises a pipe body, a rotating part and a fixing part, wherein the pipe body is provided with a fixing section (10) and a rotating section (20), one of the fixing section (10) and the rotating section (20) is sleeved on the other, and the fixing section and the rotating section can be controlled to generate relative rotating motion;

the adjusting assembly comprises a telescopic body (30) and an adjusting piece (40), the telescopic body (30) is sleeved in the innermost layer of the fixed section (10) or the rotating section (20), and the adjusting piece (40) protrudes out of the telescopic body (30) along the direction axially crossed with the pipe body;

wherein, one of the fixed section (10) and the rotating section (20) which generates the rotating motion is provided with a lifting groove (21) along the axial direction of the pipe body, and the other one is provided with a thread groove (11) which surrounds the circumferential direction of the pipe body and extends along the axial direction of the pipe body; the adjusting piece (40) is simultaneously embedded in the thread groove (11) and the lifting groove (21), the adjusting component rotates synchronously along with the rotation, and the adjusting piece (40) is kept to rotate along the circumferential direction of the thread groove (11) and synchronously lift along the axial direction of the lifting groove (21).

2. The lifting mechanism according to claim 1, wherein one of the fixed section (10) and the rotating section (20) which generates the rotating motion is further provided with a first locking groove (22) and a second locking groove (23) along the circumferential direction of the pipe body, and the first locking groove (22) and the second locking groove (23) are arranged at two axial ends of the one which generates the rotating motion and are both communicated with the lifting groove (21);

when the telescopic body (30) is completely accommodated or completely extends out of one of the fixed section (10) and the rotating section (20) to generate rotating motion, the adjusting piece (40) is respectively locked in the first locking groove (22) or the second locking groove (23).

3. The lifting mechanism according to claim 2, characterized in that the tubular body comprises at least two snap-catches (a) formed in the first locking groove (22) and/or the second locking groove (23);

one end of each elastic buckle (a) is connected with the inner wall of the groove corresponding to the first locking groove (22) or the second locking groove (23), the other end of each elastic buckle extends towards the lifting groove (21) in a hanging mode, and the adjusting piece (40) is formed at an inlet and an outlet of the first locking groove (22) or the second locking groove (23) through the lifting groove (21).

4. The lifting mechanism according to any one of claims 1-2, wherein the fixed section (10) is sleeved outside the rotating section (20), and the telescopic body (30) is sleeved inside the rotating section (20);

the adjusting piece (40) protrudes out of the telescopic body (30) along the radial direction of the pipe body, and is limited in the lifting groove (21) along the circumferential direction of the pipe body and limited in the thread groove (11) along the axial direction of the pipe body in the lifting process.

5. The lifting mechanism according to claim 4, wherein the screw groove (11) is a double-line screw groove formed in an inner wall of the fixed section (10).

6. The lifting mechanism according to claim 4, characterized in that said telescopic body (30) comprises a first section (31), said first section (31) being telescopically housed in said rotary section (20);

and the diameter of the outer circle of the first section (31) is smaller than the diameter of the inner hole of the rotating section (20).

7. The lifting mechanism according to claim 6, characterized in that the telescopic body (30) further comprises a second section (32), the second section (32) being connected to one end of the first section (31) and being located at the end projecting beyond the rotary section (20) away from the first section (31);

a threaded hole (311) is formed in the second section (32), and the adjusting piece (40) is in threaded connection with the threaded hole (311).

8. The lifting mechanism according to claim 7, characterized in that the adjusting members (40) comprise two, two of the adjusting members (40) being screwed with opposite ends of the second section (32) in a direction axially intersecting the tubular body;

the lifting groove (21) and the thread groove (11) also comprise two adjusting pieces, and one adjusting piece (40) is embedded in one thread groove (11) and one lifting groove (21) simultaneously.

9. The lifting mechanism according to claim 4, characterized in that the rotating section (20) further comprises an operating portion (24), and the operating portion (24) is provided to protrude relative to the fixed section (10) on one side in the axial direction of the pipe body.

10. A fan, characterized in that it comprises a lifting mechanism (100) according to any one of claims 1 to 9.

Images