阅读说明：本技术 升降折叠机构以及升降折叠风扇 (Lifting and folding mechanism and lifting and folding fan ) 是由 胡健兴 范瑞鹏 王勇 陈宇强 宋万坤 李亮 于 2021-09-01 设计创作，主要内容包括：本申请提供了一种升降折叠机构以及升降折叠风扇。该升降折叠机构包括：底座,其用于承载传动组件和动力组件；传动组件,其包括：螺纹杆和设置在螺纹杆上的螺母滑块,螺母滑块能够随着螺纹杆的转动沿着螺纹杆直线移动；曲柄,曲柄的底端固定在底座的一端,曲柄的顶部与连杆单元连接；以及,连杆单元,连杆单元的底端固定在螺母滑块上；以及,动力组件,其包括电机,电机能够带动螺纹杆转动。利用该升降折叠机构,以电机作为动力源,结构可靠,可长期重复使用,有利于提升用户体验。升降折叠风扇包括上述升降折叠机构。(The application provides a lift folding mechanism and lift folding fan. This lift folding mechanism includes: a base for carrying a transmission assembly and a power assembly; a drive assembly, comprising: the nut sliding block can move linearly along the threaded rod along with the rotation of the threaded rod; the bottom end of the crank is fixed at one end of the base, and the top of the crank is connected with the connecting rod unit; the bottom end of the connecting rod unit is fixed on the nut sliding block; and the power assembly comprises a motor, and the motor can drive the threaded rod to rotate. Utilize this lift folding mechanism to the motor is as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience. The lifting folding fan comprises the lifting folding mechanism.)

1. A lift-fold mechanism, comprising:

a base for carrying a transmission assembly and a power assembly;

the transmission assembly, it includes:

the nut sliding block can move linearly along the threaded rod along with the rotation of the threaded rod;

the bottom end of the crank is fixed at one end of the base, and the top of the crank is connected with the connecting rod unit; and the number of the first and second groups,

the bottom end of the connecting rod unit is fixed on the nut sliding block; and the power assembly comprises a motor, and the motor can drive the threaded rod to rotate.

2. The lift-fold mechanism of claim 1 wherein said power assembly further comprises a motor gear and a screw gear; the motor can drive the motor gear which is coaxial with the motor gear to rotate, and the rotating motor gear can drive the screw gear to rotate, so that the threaded rod which is coaxial with the screw gear is driven to rotate.

3. The lifting and folding mechanism of claim 1 or 2, characterized in that the two ends of the threaded rod are connected with the base through bearings.

4. The lifting and folding mechanism according to claim 1 or 2, characterized in that the link unit comprises a first link, the bottom end of which is connected with the nut runner; the bottom end of the crank is connected to one end, far away from the power assembly, of the base, and the top end of the crank is connected to the middle of the first connecting rod.

5. The lifting and folding mechanism of claim 4, wherein said linkage unit further comprises a second linkage and a third linkage, said second linkage being disposed parallel to said first linkage, a bottom end of said second linkage being connected to a top of said crank; the bottom of the third connecting rod is connected with the top ends of the first connecting rod and the second connecting rod.

6. The lifting and folding mechanism according to claim 5, characterized in that said link unit further comprises a fourth link and a fifth link, said fourth link being arranged in parallel with said third link; the top end of the third connecting rod is connected with the bottom of the fifth connecting rod; the bottom end of the fourth connecting rod is connected with the top of the first connecting rod, and the top end of the fourth connecting rod is connected with the bottom end of the fifth connecting rod.

7. Lifting and folding fan, characterized in that it comprises a lifting and folding mechanism according to any one of claims 1 to 6.

8. The lift-fold fan of claim 7 further comprising a fan chassis for housing the lift-fold mechanism.

9. The lifting folding fan of claim 8 further comprising a mesh enclosure for protecting the fan blades; the bottom surface of the mesh enclosure is attached to the top wall of the fifth connecting rod.

10. The lift-fold fan of claim 9 wherein the mesh enclosure and the fan chassis are coaxially stackable one above the other and have a radius equal to a radius of the fan chassis.

Technical Field

The invention relates to the technical field of folding devices, in particular to a lifting and folding mechanism and a lifting and folding fan.

Background

The existing fan is large in size and not beneficial to storage. Folding fan can effectual reduction fan's volume after folding to reduce the fan and to the occupation in space, be favorable to accomodating, be particularly useful for the limited user in accommodation space. Meanwhile, the folding fan can also be applied to a portable fan, so that a user who often needs to go out or is outdoors is facilitated.

However, the existing folding fan is mainly manually folded, the use process is inconvenient, the folding adjusting mode is realized by adopting modes such as damping, friction, top columns and the like, and in the process of long-time use, the folding adjusting mode is easy to lose efficacy and influences the user experience.

Disclosure of Invention

To the problem among the above-mentioned prior art, this application has proposed a lift folding mechanism and lift folding fan. The lifting and folding mechanism is driven by the motor, is reliable in structure, can be repeatedly used for a long time, and is favorable for improving user experience.

In a first aspect, the present invention provides a lift-fold mechanism comprising: a base for carrying a transmission assembly and a power assembly; the transmission assembly, it includes: the nut sliding block can move linearly along the threaded rod along with the rotation of the threaded rod; the bottom end of the crank is fixed at one end of the base, and the top of the crank is connected with the connecting rod unit; the bottom end of the connecting rod unit is fixed on the nut sliding block; and the power assembly comprises a motor, and the motor can drive the threaded rod to rotate. Utilize this lift folding mechanism to the motor is as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

In one embodiment of the first aspect, the power assembly further comprises a motor gear and a screw gear; the motor can drive the motor gear which is coaxial with the motor gear to rotate, and the rotating motor gear can drive the screw gear to rotate, so that the threaded rod which is coaxial with the screw gear is driven to rotate. Through this embodiment, the motor can drive the threaded rod and rotate.

In one embodiment of the first aspect, both ends of the threaded rod are connected to the base by bearings. Through this embodiment, can make the relative base of threaded rod rotate, be favorable to the motor to drive the threaded rod and rotate.

In one embodiment of the first aspect, the link unit includes a first link, a bottom end of the first link being connected to the nut runner; the bottom end of the crank is connected to one end, far away from the power assembly, of the base, and the top end of the crank is connected to the middle of the first connecting rod. Through this embodiment, the first connecting rod can be gone up and down to fold along with the removal of nut slider.

In one embodiment of the first aspect, the connecting rod unit further comprises a second connecting rod and a third connecting rod, the second connecting rod is arranged in parallel with the first connecting rod, and the bottom end of the second connecting rod is connected to the top of the crank; the bottom of the third connecting rod is connected with the top ends of the first connecting rod and the second connecting rod. Through this embodiment, the link unit can be folded up and down with the movement of the nut slider.

In one embodiment of the first aspect, the link unit further comprises a fourth link and a fifth link, the fourth link being arranged in parallel with the third link; the top end of the third connecting rod is connected with the bottom of the fifth connecting rod; the bottom end of the fourth connecting rod is connected with the top of the first connecting rod, and the top end of the fourth connecting rod is connected with the bottom end of the fifth connecting rod. Through this embodiment, the connecting rod unit can be gone up and down to fold along with the removal of nut slider, and can make the altitude mixture control range of waiting to go up and down the thing bigger.

In a second aspect, the present invention further provides a lifting folding fan, which includes the lifting folding mechanism of the first aspect and any of the embodiments thereof. Utilize this folding fan that goes up and down, can regard as the power supply with the motor, the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

In one embodiment of the second aspect, the lift-fold fan further comprises a fan chassis for housing the lift-fold mechanism. Through this embodiment, be favorable to practicing thrift and accomodate the space.

In one embodiment of the second aspect, the lifting folding fan further comprises a mesh enclosure for protecting the fan blades; the bottom surface of the mesh enclosure is attached to the top wall of the fifth connecting rod. Through this embodiment, because the bottom surface of screen panel is laminated with the roof of fifth connecting rod mutually, the opening angle of fifth connecting rod is the same with the opening angle of fan, is favorable to the opening angle of connecting rod unit control fan.

In one embodiment of the second aspect, the mesh enclosure and the fan chassis can be coaxially stacked up and down, and the radius of the mesh enclosure is equal to the radius of the fan chassis. Through this embodiment, the fan after folding is cylindric, is favorable to accomodating, stores the fan after folding better, is particularly useful for the limited user of accommodation space.

The application provides a lift folding mechanism and lift folding fan compares in prior art, has following beneficial effect.

1. Utilize this lift folding mechanism to the motor is as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

2. Due to the arrangement of the five connecting rods, the connecting rod unit can be lifted and folded along with the movement of the nut sliding block, and the height adjusting range of the object to be lifted can be larger.

3. Utilize this folding fan that goes up and down, can regard as the power supply with the motor, the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:

FIG. 1 shows a schematic structural view of an elevator folding mechanism according to an embodiment of the present invention;

FIG. 2 shows an exploded view of a lift folding fan according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a lifting folding fan according to an embodiment of the present invention;

fig. 4 is a schematic structural view illustrating a lifting folding fan in a storage state according to an embodiment of the present invention.

List of reference numerals:

1-a fan chassis; 2-a base; 3-a nut slider; 4-screw gear; 5-motor gear; 6-a bearing; 7-a motor; 8-a threaded rod; 9-a crank; 10-a first link; 11-a second link; 12-a third link; 13-a fourth link; 14-a fifth link; 15-mesh enclosure; 16-fan blades.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, the present embodiment provides an elevation folding mechanism including: a base 2 for carrying a transmission assembly and a power assembly; a drive assembly, comprising: the nut sliding block 3 can move linearly along the threaded rod 8 along with the rotation of the threaded rod 8; the bottom end of the crank 9 is fixed at one end of the base 2, and the top of the crank 9 is connected with the connecting rod unit; the bottom end of the connecting rod unit is fixed on the nut sliding block 3; and the power assembly comprises a motor 7, and the motor 7 can drive the threaded rod 8 to rotate.

As shown in fig. 1, a power unit and a crank 9 are fixed to both ends of the base 2, respectively. The base 2 provides support for the transmission assembly and the power assembly.

The motor 7 drives the threaded rod 8 to rotate, the rotating threaded rod 8 drives the nut sliding block 3 on the threaded rod to move, and the nut sliding block 3 can move linearly along the threaded rod 8 along with the rotation of the threaded rod 8. And because the bottom end of the connecting rod unit is fixed on the nut sliding block 3, the nut sliding block 3 which moves linearly can drive the bottom end of the connecting rod unit to move linearly. That is, the rotation of the motor 7 can drive the bottom end of the link unit to move linearly.

The top of crank 9 is connected with the connecting rod unit, and the bottom of crank 9 is fixed in the one end of base 2 far away from power component. The movement of the link unit can bring the crank 9 into motion.

The top of the connecting rod unit can be lifted along with the movement of the nut slider 3. Specifically, as the nut runner 3 slides toward the crank 9, the top of the link unit gradually rises; when the nut runner 3 slides away from the crank 9, the top of the link unit gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In summary, the link unit can be folded up and down as the nut runner 3 moves. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Compare in manual folding, the use is convenient, avoids using manual folding adjustment modes such as damping, friction, fore-set to realize going up and down folding. In the process of long-time use, manual folding adjustment modes such as damping, friction, fore-set are easy to lose efficacy, and user experience is influenced. And this embodiment folding mode of regulation uses motor 7 as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

Utilize this lift folding mechanism to motor 7 is as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

In one embodiment, as shown in fig. 1, the power assembly further comprises a motor 7, a gear 5 and a screw gear 4; the motor 7 can drive the motor 7 gear 5 which is coaxially arranged with the motor 7 to rotate, and the rotating motor 7 gear 5 can drive the screw gear 4 to rotate, so that the threaded rod 8 which is coaxially arranged with the screw gear 4 is driven to rotate.

The motor 7 and the motor 7 are coaxially arranged, and therefore, the motor 7 can drive the motor 7 and the gear 5 to rotate. The motor 7 and the gear 5 are meshed with each other, so that the rotating motor 7 and the gear 5 can drive the screw gear 4 to rotate. The screw gear 4 is arranged coaxially with the threaded rod 8, and therefore, the screw gear 4 can drive the threaded rod 8 to rotate.

Through this embodiment, the motor 7 can drive the threaded rod 8 to rotate.

In one embodiment, as shown in fig. 1, both ends of the threaded rod 8 are connected to the base 2 through bearings 6.

The threaded rod 8 is positioned inside the base 2 and is fixedly connected with two ends of the base 2. Through set up bearing 6 at the both ends of threaded rod 8, can make the relative base 2 of threaded rod 8 rotate, be favorable to motor 7 to drive threaded rod 8 and rotate.

Through this embodiment, can make threaded rod 8 rotate 2 relative bases, be favorable to motor 7 to drive threaded rod 8 and rotate.

In one embodiment, as shown in fig. 1, the link unit includes a first link 10, a bottom end of the first link 10 being connected with the nut runner 3; the bottom end of the crank 9 is connected to the end, far away from the power assembly, of the base 2, and the top end of the crank 9 is connected to the middle of the first connecting rod 10.

The top of the first link 10 can be lifted and lowered with the movement of the nut runner 3. Specifically, as the nut runner 3 slides towards the crank 9, the top of the first connecting rod 10 gradually rises; when the nut runner 3 slides away from the crank 9, the top of the first link 10 gradually descends.

The first link 10 is foldable, in particular, when the nut runner 3 is in the position furthest from the crank 9, the first link 10 is in the folded state; when the nut runner 3 slides towards the crank 9, the first connecting rod 10 opens gradually.

In summary, the first link 10 can be folded up and down with the movement of the nut runner 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the first connecting rod 10 to lift and fold.

With this embodiment, the first link 10 can be folded up and down with the movement of the nut runner 3.

In one embodiment, as shown in fig. 1, the link unit further includes a second link 11 and a third link 12, the second link 11 is disposed in parallel with the first link 10, and a bottom end of the second link 11 is connected to a top of the crank 9; the bottom of the third link 12 is connected to the top ends of the first link 10 and the second link 11.

The third link 12 can be lifted and lowered in accordance with the movement of the nut runner 3. Specifically, when the nut runner 3 slides towards the crank 9, the third link 12 gradually rises; when the nut runner 3 slides away from the crank 9, the third connecting rod 12 gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In conclusion, the connecting rod can be lifted and folded along with the movement of the nut slider 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Wherein the object to be lifted can be fixed on the third connecting rod 12.

With this embodiment, the link unit can be folded up and down with the movement of the nut runner 3.

In one embodiment, as shown in fig. 1, the link unit further includes a fourth link 13 and a fifth link 14, the fourth link 13 being disposed in parallel with the third link 12; the top end of the third connecting rod 12 is connected with the bottom of the fifth connecting rod 14; the bottom end of the fourth link 13 is connected to the top of the first link 10, and the top end of the fourth link 13 is connected to the bottom end of the fifth link 14.

The fifth link 14 can be lifted and lowered in accordance with the movement of the nut runner 3. Specifically, as the nut runner 3 slides towards the crank 9, the fifth link 14 gradually rises; when the nut runner 3 slides away from the crank 9, the fifth connecting rod 14 gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In conclusion, the connecting rod can be lifted and folded along with the movement of the nut slider 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Wherein the object to be lifted can be fixed on the fifth connecting rod 14. Compared with the third connecting rod 12, the height of the fifth connecting rod 14 is larger, and the height adjusting range of the object to be lifted can be larger by utilizing the fifth connecting rod 14.

Through the embodiment, the connecting rod unit can be lifted and folded along with the movement of the nut slider 3, and the height adjusting range of the object to be lifted can be larger.

As shown in fig. 2 and 3, the present embodiment also provides a lifting folding fan including the lifting folding mechanism described above.

Utilize this folding fan that goes up and down, can regard as the power supply with motor 7, the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

In one embodiment, the lift-fold fan further comprises a fan chassis 1 for housing the lift-fold mechanism.

When the lifting and folding mechanism is in a folded state, the lifting and folding mechanism can be completely contained in the fan chassis 1, so that the containing space is saved.

Through this embodiment, be favorable to practicing thrift and accomodate the space.

Optionally, in an embodiment, as shown in fig. 2 and 3, the lifting folding fan further includes a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the mesh enclosure 15 is attached to the top wall of the fifth connecting rod 14.

Through this embodiment, since the bottom surface of the mesh enclosure 15 is attached to the top wall of the fifth link 14, the opening angle of the fifth link 14 is the same as the opening angle of the fan, which is advantageous for the link unit to control the opening angle of the fan.

Preferably, the fifth link 14 is located on a diameter of the bottom surface of the mesh enclosure 15, so as to facilitate better control of the opening angle of the fan, and enable the fan to have better balance performance, avoiding stress concentration.

Optionally, in an embodiment, the lifting folding fan further includes a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the mesh enclosure 15 is attached to the top wall of the third connecting rod 12, so that the balance performance of the fan is better, and stress concentration is avoided.

Through this embodiment, since the bottom surface of the mesh enclosure 15 is attached to the top wall of the third link 12, the opening angle of the third link 12 is the same as the opening angle of the fan, which is advantageous for the link unit to control the opening angle of the fan.

Preferably, the third link 12 is located on a diameter of the bottom surface of the mesh enclosure 15, thereby facilitating better control of the fan opening angle.

Optionally, in an embodiment, the lifting folding fan further includes a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the net cover 15 is fixedly connected with the top of the first connecting rod 10.

In one embodiment, the mesh enclosure 15 and the fan chassis 1 can be coaxially stacked up and down, and the radius of the mesh enclosure 15 is equal to the radius of the fan chassis 1.

Through the embodiment, as shown in fig. 4, the folded fan is cylindrical, which is beneficial to better storing and storing the folded fan, and is especially suitable for users with limited storage space.

Example one

As shown in fig. 1, the present embodiment provides an elevation folding mechanism, including: a base 2 for carrying a transmission assembly and a power assembly; a drive assembly, comprising: the nut sliding block 3 can move linearly along the threaded rod 8 along with the rotation of the threaded rod 8; the bottom end of the crank 9 is fixed at one end of the base 2, and the top of the crank 9 is connected with the connecting rod unit; the bottom end of the connecting rod unit is fixed on the nut sliding block 3; and the power assembly comprises a motor 7, and the motor 7 can drive the threaded rod 8 to rotate.

As shown in fig. 1, a power unit and a crank 9 are fixed to both ends of the base 2, respectively. The base 2 provides support for the transmission assembly and the power assembly.

The motor 7 drives the threaded rod 8 to rotate, the rotating threaded rod 8 drives the nut sliding block 3 on the threaded rod to move, and the nut sliding block 3 can move linearly along the threaded rod 8 along with the rotation of the threaded rod 8. And because the bottom end of the connecting rod unit is fixed on the nut sliding block 3, the nut sliding block 3 which moves linearly can drive the bottom end of the connecting rod unit to move linearly. That is, the rotation of the motor 7 can drive the bottom end of the link unit to move linearly.

The top of crank 9 is connected with the connecting rod unit, and the bottom of crank 9 is fixed in the one end of base 2 far away from power component. The movement of the link unit can bring the crank 9 into motion.

The top of the connecting rod unit can be lifted along with the movement of the nut slider 3. Specifically, as the nut runner 3 slides toward the crank 9, the top of the link unit gradually rises; when the nut runner 3 slides away from the crank 9, the top of the link unit gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In summary, the link unit can be folded up and down as the nut runner 3 moves. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Compare in manual folding, the use is convenient, avoids using manual folding adjustment modes such as damping, friction, fore-set to realize going up and down folding. In the process of long-time use, manual folding adjustment modes such as damping, friction, fore-set are easy to lose efficacy, and user experience is influenced. And this embodiment folding mode of regulation uses motor 7 as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

Utilize this lift folding mechanism to motor 7 is as the power supply, and the structure is reliable, but long-term used repeatedly is favorable to promoting user experience.

Example two

As shown in fig. 1, the link unit includes a first link 10, and a bottom end of the first link 10 is connected to the nut runner 3; the bottom end of the crank 9 is connected to the end, far away from the power assembly, of the base 2, and the top end of the crank 9 is connected to the middle of the first connecting rod 10.

The top of the first link 10 can be lifted and lowered with the movement of the nut runner 3. Specifically, as the nut runner 3 slides towards the crank 9, the top of the first connecting rod 10 gradually rises; when the nut runner 3 slides away from the crank 9, the top of the first link 10 gradually descends.

The first link 10 is foldable, in particular, when the nut runner 3 is in the position furthest from the crank 9, the first link 10 is in the folded state; when the nut runner 3 slides towards the crank 9, the first connecting rod 10 opens gradually.

In summary, the first link 10 can be folded up and down with the movement of the nut runner 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the first connecting rod 10 to lift and fold.

With this embodiment, the first link 10 can be folded up and down with the movement of the nut runner 3.

EXAMPLE III

The present embodiment provides a lifting folding fan, which includes the lifting folding mechanism of the second embodiment.

The lifting folding fan also comprises a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the net cover 15 is fixedly connected with the top of the first connecting rod 10.

Example four

As shown in fig. 1, on the basis of the second embodiment, the connecting rod unit further includes a second connecting rod 11 and a third connecting rod 12, the second connecting rod 11 is arranged in parallel with the first connecting rod 10, and the bottom end of the second connecting rod 11 is connected to the top of the crank 9; the bottom of the third link 12 is connected to the top ends of the first link 10 and the second link 11.

The third link 12 can be lifted and lowered in accordance with the movement of the nut runner 3. Specifically, when the nut runner 3 slides towards the crank 9, the third link 12 gradually rises; when the nut runner 3 slides away from the crank 9, the third connecting rod 12 gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In conclusion, the connecting rod can be lifted and folded along with the movement of the nut slider 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Wherein the object to be lifted can be fixed on the third connecting rod 12.

With this embodiment, the link unit can be folded up and down with the movement of the nut runner 3.

EXAMPLE five

The present embodiment provides a lifting folding fan including the lifting folding mechanism of the fourth embodiment.

The lifting folding fan also comprises a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the mesh enclosure 15 is attached to the top wall of the third connecting rod 12. Through this embodiment, since the bottom surface of the mesh enclosure 15 is attached to the top wall of the third link 12, the opening angle of the third link 12 is the same as the opening angle of the fan, which is advantageous for the link unit to control the opening angle of the fan.

Preferably, the third connecting rod 12 is located on a diameter of the bottom surface of the mesh enclosure 15, so as to facilitate better control of the opening angle of the fan, and enable the balance performance of the fan to be better, and avoid stress concentration.

Preferably, the base 2, the connecting rod, the crank 9 and the mesh enclosure 15 are connected by a pin.

EXAMPLE six

As shown in fig. 1, on the basis of the fourth embodiment, the link unit further includes a fourth link 13 and a fifth link 14, and the fourth link 13 is arranged in parallel with the third link 12; the top end of the third connecting rod 12 is connected with the bottom of the fifth connecting rod 14; the bottom end of the fourth link 13 is connected to the top of the first link 10, and the top end of the fourth link 13 is connected to the bottom end of the fifth link 14.

The fifth link 14 can be lifted and lowered in accordance with the movement of the nut runner 3. Specifically, as the nut runner 3 slides towards the crank 9, the fifth link 14 gradually rises; when the nut runner 3 slides away from the crank 9, the fifth connecting rod 14 gradually descends.

The link unit can be folded, in particular when the nut runner 3 is in the position furthest from the crank 9; when the nut runner 3 slides towards the crank 9, the link unit opens gradually.

In conclusion, the connecting rod can be lifted and folded along with the movement of the nut slider 3. The motor 7 can drive the nut and slide block 3 to move through self rotation, so as to drive the connecting rod unit to lift and fold.

Wherein the object to be lifted can be fixed on the fifth connecting rod 14. Compared with the third connecting rod 12, the height of the fifth connecting rod 14 is larger, and the height adjusting range of the object to be lifted can be larger by utilizing the fifth connecting rod 14.

Through this embodiment, the link unit can be folded along with the movement of the nut slider 3, and the height adjustment range of the object to be lifted can be made larger.

EXAMPLE seven

As shown in fig. 2 and 3, the present embodiment provides a lifting folding fan including the lifting folding mechanism of the sixth embodiment.

The lifting folding fan also comprises a mesh enclosure 15 for protecting the fan blades 16; the bottom surface of the mesh enclosure 15 is attached to the top wall of the fifth connecting rod 14. Through this embodiment, since the bottom surface of the mesh enclosure 15 is attached to the top wall of the fifth link 14, the opening angle of the fifth link 14 is the same as the opening angle of the fan, which is advantageous for the link unit to control the opening angle of the fan.

Preferably, the fifth link 14 is located on a diameter of the bottom surface of the mesh enclosure 15, so as to facilitate better control of the opening angle of the fan, and enable the fan to have better balance performance, avoiding stress concentration.

Preferably, the base 2, the connecting rod, the crank 9 and the mesh enclosure 15 are connected by a pin.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.