Lifting fan

Abstract

The utility model discloses a lifting fan, which relates to the technical field of fans, is provided with an electric wire and a wire outlet which can be electrically connected with an external power supply, and comprises a fan head, a base, a driving component, a lifting rod group and an electric wire protection component, the driving assembly and the wire outlet are arranged on the fan head and the base correspondingly. The driving piece is in driving connection with the transmission screw. One end of the lifting rod set is connected with the base, the other end of the lifting rod set is connected with the fan head, the lifting rod set comprises a first sleeve and a second sleeve, and the driving assembly enables the second sleeve and the first sleeve to move. The electric wire protection assembly comprises a separation structure in the second sleeve, so that the second sleeve comprises a containing cavity and a transmission cavity, the containing cavity is used for containing stacked electric wires, the transmission cavity is connected with the driving assembly, a wire passing hole is formed in the separation structure, the electric wires penetrate through the wire passing hole, and when the second sleeve and the first sleeve are close to each other, the separation structure is close to the driving assembly. According to the technical scheme provided by the utility model, the wire can be prevented from being wound with the transmission screw in the lifting rod group.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a lifting fan. Background Art

[0002] In existing electric lifting fans, the lifting motor of the lifting rod is usually arranged on the base, or the control panel of the fan is arranged on the base, but the blade motor of the lifting fan is arranged on the fan head, so a wire is required to connect the base and the fan head, or a battery is provided at the fan head to supply power to the blade motor, or the fan has two wire plugs, one of which is electrically connected to the lifting motor or the control panel at the base, and the other is electrically connected to the blade motor at the fan head. However, the weight of the fan with a battery at the fan head is significantly increased, and the battery needs to be replaced regularly, which reduces the convenience of using the fan, and the fan with two wire plugs needs to use two sockets when working, which limits the use environment, so connecting the base and the fan head with wires is a better choice.

[0003] Currently, the lifting rods on the market are divided into two types: solid lifting rods and hollow lifting rods. When a solid lifting rod is used, the wires cannot pass through the inside of the lifting rod, so the wires are arranged on the outside of the lifting rod, affecting the aesthetic appearance of the fan; when a hollow lifting rod is used, the wires are easily entangled with the transmission rod of the lifting motor inside the lifting rod, affecting the use of the lifting motor. Utility Model Content

[0004] The main purpose of the utility model is to provide a lifting fan, aiming to prevent the electric wires from being entangled with the driving screw in the lifting rod group.

[0005] To achieve the above-mentioned purpose, the lifting fan proposed by the utility model is provided with an electric wire that can be electrically connected to an external power source, and a power supply line extending out of the outlet of the lifting fan, including:

[0006] A fan head, comprising a fan housing and an impeller assembly, wherein the impeller assembly is used to fan the airflow;

[0007] Base;

[0008] A driving assembly, comprising a driving member and a transmission screw, wherein the driving member is arranged on the fan housing or the base, and the driving member is drivingly connected to the transmission screw;

[0009] a lifting rod assembly, one end of which is connected to the base, and the other end of which is connected to the fan housing, the lifting rod assembly comprising a first sleeve and a second sleeve which are sleeved together, the first sleeve being arranged close to the driving member, the second sleeve being drivingly connected to the driving screw, the second sleeve having a first position and a second position, in the first position, the second sleeve is close to the first sleeve, and in the second position, the second sleeve is away from the first sleeve; and

[0010] A wire protection assembly, which is arranged in the second sleeve and includes a partition structure, so that the second sleeve includes a receiving chamber and a transmission chamber, the receiving chamber is used to receive stacked wires, and the transmission chamber is used for the transmission screw to extend therein, and a wire passing hole is provided on the partition structure, the wire passing hole connects the receiving chamber and the transmission chamber, and is arranged close to the tube wall of the second sleeve to allow the wire to pass through, and in the first position, the partition structure is close to the end of the transmission screw away from the driving member.

[0011] In one embodiment, the wire protection assembly also includes a wire limiting tube, which is installed on the same side as the transmission screw, and the end of the transmission screw is close to the end of the wire limiting tube. In the first position, at least part of the structure of the wire limiting tube is inserted into the wire passing hole.

[0012] In one embodiment, the partition structure extends along the extension direction of the second sleeve, the transmission chamber is formed on the partition structure, the inner wall surface of the second sleeve and the end surface of the partition structure away from the driving member enclose the accommodating chamber, and in the first position and the second position, at least part of the structure of the wire limiting tube is inserted into the wire passing hole.

[0013] In one embodiment, the partition structure includes an avoidance hole, which is disposed in a central area of ​​the partition structure and passes through the partition structure. Two wire passing holes are provided and are disposed on opposite sides of the partition structure.

[0014] In one embodiment, the partition structure and the second sleeve are integrally formed.

[0015] In one embodiment, the wire limiting tube has a wire passing notch on its circumference, and the wire passing notch passes through opposite ends of the wire limiting tube. The inner side wall of the wire limiting tube and the inner side wall of the lifting rod group enclose a limiting space.

[0016] In one embodiment, a nut is provided on one end of the second sleeve close to the driving member, and the transmission screw is rotatably connected through the nut to enable the lifting rod assembly to move up and down.

[0017] In one embodiment, the second sleeve has a mounting protrusion extending toward the axis at one end close to the driving member, the nut is connected to the mounting protrusion by a screw, and the mounting protrusion is provided with a through hole for avoiding the wire limiting tube.

[0018] In one embodiment, the cross-sectional shape of the thread on the transmission threaded rod is configured as one of a triangle, a trapezoid and a rectangle.

[0019] In one embodiment, the transmission threaded rod includes one of a single-start threaded rod, a double-start threaded rod, and a multi-start threaded rod.

[0020] In one embodiment, the partition structure includes a partition and a partition support frame, the accommodating chamber and the transmission chamber are respectively formed at both ends of the partition, the wire hole is provided on the partition, and the partition support frame supports the partition to install the partition on the second sleeve.

[0021] The lifting fan in the technical solution of the utility model is provided with an electric wire that can be electrically connected to an external power source, and a power supply line extending out of the outlet of the lifting fan, and includes a fan head, a base, a driving assembly, a lifting rod group and a wire protection assembly. The fan head includes a fan housing and an impeller assembly, and the impeller assembly can be used to provide an airflow blowing toward the user; the wire outlet is provided in one of the base and the fan housing; the driving assembly includes a driving member and a transmission screw, and the driving member is provided in the other of the fan housing and the base, that is, there must be an electric wire passing through the lifting rod group, and the driving member drives the connection transmission screw; the lifting rod group is provided between the fan housing and the base, one end is connected to the base, and the other end is connected to the fan housing, and the lifting rod group includes a first sleeve and a second sleeve that are nested together, the first sleeve is provided close to the driving member, and the second sleeve is drivingly connected to the transmission screw, that is, the driving member can drive the second sleeve to move relative to the first sleeve, so that the fan head and the base Close to and away from each other, the second sleeve has a first position and a second position, in the first position, the second sleeve and the first sleeve are close to each other, in the second position, the second sleeve and the first sleeve are away from each other; the wire protection assembly is arranged in the second sleeve, and includes a partition structure, the partition structure is arranged in the second sleeve, so that the second sleeve includes a receiving chamber and a transmission chamber, the receiving chamber is used to receive the stacked wires, and the transmission chamber is used for the transmission screw to extend into, and a wire hole is provided on the partition structure, the wire hole connects the receiving chamber and the transmission chamber, and is arranged near the tube wall of the second sleeve to allow the wire to pass through, and the wire passes through the base, the receiving chamber, the transmission chamber, the first sleeve in sequence, and enters the fan housing. In the first position, the partition structure is close to the end of the transmission screw away from the driving member. When the second sleeve moves to the second position, the partition structure moves with the second sleeve, and the accommodating chamber moves away from the rotating screw. Some of the wires stacked in the accommodating chamber will pass through the wire hole and enter the transmission chamber, but the length of the wires entering the transmission chamber is related to the moving distance of the second sleeve relative to the first sleeve. Therefore, the wires entering the transmission chamber are limited, will not be stacked in the transmission chamber, and will not contact the transmission screw in the first sleeve, and will not be entangled with the transmission screw. When the second sleeve moves from the second position to the first position, the wires entering the transmission chamber will pass through the wire hole again and be stacked in the accommodating chamber again. Therefore, during the movement of the second sleeve, the wires stacked in the second sleeve are isolated from the transmission screw by the partition structure and will not be entangled with the transmission screw, which helps to avoid failure of the lifting rod group caused by entanglement of the wires and the transmission screw, and can avoid damage to the drive member and the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A structural schematic diagram of a first embodiment of a lifting fan provided by the utility model;

[0024] Figure 2 for Figure 1 a cross-sectional view of the illustrated embodiment;

[0025] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0027] Figure 5 for Figure 1 Another cross-sectional view of the illustrated embodiment;

[0028] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0029] Figure 7 for Figure 5 A partial enlarged view of point D in the middle;

[0030] Figure 8 for Figure 1 A schematic structural diagram of the second sleeve in the illustrated embodiment;

[0031] Fig. 9 A cross-sectional view of a second embodiment of a lifting fan provided by the utility model;

[0032] Fig.10 for Fig. 9 A partial enlarged view of point E in the middle;

[0033] Fig.11 for Fig. 9 Another cross-sectional view of the illustrated embodiment;

[0034] Fig.12 for Fig.11 A partial enlarged view of the F in the middle;

[0035] Fig.13 for Fig. 9 A schematic structural diagram of the second sleeve in the illustrated embodiment.

[0036] Description of Figure Numbers:

[0037] 100. fan head; 11. fan housing; 12. impeller assembly;

[0038] 200, base;

[0039] 300, driving assembly; 31, driving member; 32, driving screw; 33, bearing; 34, bearing fixing seat;

[0040] 400, lifting rod assembly; 41, first sleeve; 42, second sleeve; 421, accommodating chamber; 422, transmission chamber; 423, mounting protrusion; 424, nut; 425, through hole;

[0041] 500, wire protection assembly; 51, partition structure; 511, wire hole; 512, partition; 513, partition support frame; 514, avoidance hole; 52, wire limiting tube; 521, wire notch; 522, limiting space; 523, installation ring.

[0042] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0046] The utility model provides a lifting fan.

[0047] See also Figures 1 to 13In one embodiment of the utility model, the lifting fan is provided with an electric wire that can be electrically connected to an external power source, and a power supply line extends out of the outlet of the lifting fan, and includes a fan head 100, a base 200, a driving assembly 300, a lifting rod group 400 and a wire protection assembly 500. The fan head 100 includes a fan housing 11 and an impeller assembly 12, and the impeller assembly 12 can be used to provide an airflow blowing toward the user; a wire port is provided at one of the base 200 and the fan housing 11; a drive assembly 300 includes a drive member 31 and a transmission screw 32, and the drive member 31 is provided at the other of the fan housing 11 and the base 200, that is, there must be a wire passing through the lifting rod group 400, and the drive member 31 drives and connects the transmission screw 32; the lifting rod group 400 is provided between the fan housing 11 and the base 200, one end of which is connected to the base 200, and the other end of which is connected to the fan housing 11, and the lifting rod group 400 includes a first sleeve 41 and a second sleeve 42 which are nested together, the first sleeve 41 being provided close to the drive member 31, and the second sleeve 42 is drivingly connected to the transmission screw 32, that is, the drive member 31 can drive the second sleeve 42 to move relative to the first sleeve 41, so that the fan head 100 and The base 200 is close to and away from each other, and the second sleeve 42 has a first position and a second position. In the first position, the second sleeve 42 and the first sleeve 41 are close to each other, and in the second position, the second sleeve 42 and the first sleeve 41 are away from each other; the wire protection component 500 is arranged in the second sleeve 42 and includes a partition structure 51. The partition structure 51 is arranged in the second sleeve 42 so that the second sleeve 42 includes a receiving chamber 421 and a transmission chamber 422. The receiving chamber 421 is used to receive stacked wires, and the transmission chamber 422 is used for the transmission screw 32 to extend therein. A wire passing hole 511 is provided on the partition structure 51. The wire passing hole 511 connects the receiving chamber 421 and the transmission chamber 422, and is arranged close to the tube wall of the second sleeve 42 to allow the wire to pass through. The wire passes through the base 200, the receiving chamber 421, the transmission chamber 422, the first sleeve 41 in sequence, and enters the fan housing 11. In the first position, the partition structure 51 is close to an end of the transmission screw 32 away from the driving member 31 .When the second sleeve 42 moves to the second position, the partition structure 51 moves with the second sleeve 42, and the accommodating chamber 421 moves away from the rotating screw. Some of the wires stacked in the accommodating chamber 421 will pass through the wire hole 511 and enter the transmission chamber 422. However, the length of the wires entering the transmission chamber 422 is related to the moving distance of the second sleeve 42 relative to the first sleeve 41. Therefore, the wires entering the transmission chamber 422 are limited, and will not be stacked in the transmission chamber 422, and will not contact the transmission screw 32 in the first sleeve 41. It will not get entangled with the transmission screw 32. When the second sleeve 42 moves from the second position to the first position, the wires entering the transmission chamber 422 will pass through the wire hole 511 again and be stacked again in the accommodating chamber 421. Therefore, during the movement of the second sleeve 42, the wires stacked in the second sleeve 42 are isolated from the transmission screw 32 by the dividing structure and will not get entangled with the transmission screw 32. This helps to avoid malfunction of the lifting rod assembly 400 caused by entanglement of the wires with the transmission screw 32, and can prevent damage to the drive member 31 and the wires.

[0048] See also Figures 1 to 8 In the first embodiment, a nut 424 is provided on one end of the second sleeve 42 close to the driving member 31, and the transmission screw 32 is rotatably connected through the nut 424, so that the lifting rod assembly 400 can be lifted and lowered. The transmission screw 32 rotates around its own axis in the nut 424, so that the nut 424 moves on the transmission screw 32, thereby driving the second sleeve 42 to move relative to the first sleeve 41. In other embodiments, a threaded hole can also be provided on one end of the second sleeve 42 close to the driving member 31, and the threaded hole and the transmission screw 32 can be threadedly matched.

[0049] In the first embodiment, the wire protection assembly 500 also includes a wire limiting tube 52, which is installed on the same side as the transmission screw 32. The wires are stacked in the second sleeve 42 and pass through the wire hole 511 and the wire limiting tube 52 to enter the fan housing 11. The end of the transmission screw 32 is close to the end of the wire limiting tube 52. When there are more structures nested between the second sleeve 42 and the first sleeve 41, the wire limiting tube 52 can extend into the transmission chamber 422 together with the transmission screw 32 to prevent the wires from contacting the screw from the side of the screw, which helps to avoid the wires from contacting the screw. The screw is wound, and when the second sleeve 42 is located at the first position, at least part of the structure of the wire limiting tube 52 is inserted into the wire passing hole 511, that is, when the second sleeve 42 returns to the first position from the second position, the wire limiting tube 52 can assist the wire to pass through the wire passing hole 511, that is, through the limitation of the wire in the wire limiting tube 52, the wire entering the transmission chamber 422 can be kept extending along the extension direction of the first sleeve 41, so that when the second sleeve 42 moves to the first position again, the wire can pass through the wire passing hole 511 again, so as to reduce the risk of the wire stacking in the transmission chamber 422. In other embodiments, the wire limiting tube 52 may not be provided.

[0050] In the first embodiment, the partition structure 51 extends along the extension direction of the second sleeve 42, the transmission chamber 422 is formed on the partition structure 51, the inner wall surface of the second sleeve 42 and the end surface of the partition structure 51 away from the driving member 31 enclose the accommodating chamber 421, and at least part of the structure of the wire limiting tube 52 is inserted into the wire passing hole 511 in the first position and the second position. That is, the partition structure 51 extends to the end surface of the second sleeve 42 close to the driving member 31, at this time, the wire passing hole 511 extends along the length direction of the second sleeve 42, and when the second sleeve 42 moves between the first position and the second position, the wire limiting tube 52 slides in the wire passing hole 511, but does not leave the wire passing hole 511, at this time, the wire limiting tube 52 and the wire passing hole 511 physically isolate the wire and the transmission screw 32, effectively preventing the wire and the transmission screw 32 from contacting. The partition structure 51 is integrally formed with the second sleeve 42 , which prevents the partition structure 51 from being separated from the second sleeve 42 after long-term use and helps to enhance the strength of the second sleeve 42 .

[0051] In the first embodiment, the partition structure 51 includes an avoidance hole 514, which is disposed in the central area of ​​the partition structure 51 and passes through the partition structure 51, and two wire holes 511 are provided and disposed on opposite sides of the partition structure 51. In other embodiments, the opening of the avoidance hole 514 may be connected to the first sleeve 41, and the bottom wall of the hole may be disposed close to the accommodating chamber 421, that is, the avoidance hole 514 is disposed regardless of passing through the partition structure 51.

[0052] In the first embodiment, the hole sidewall of the wire hole 511 includes the sidewall surface of the partition structure 51 and the inner wall surface of the second sleeve 42, that is, the opening of the wire hole 511 on the end surface of the partition structure is a notch. This design helps to improve the yield rate of the partition structure 51 on the second sleeve 42 and reduce the materials required for production. In other embodiments, the hole sidewall of the wire hole 511 can also be formed only on the partition structure, that is, the opening of the wire hole 511 on the end surface of the partition structure is not a notch.

[0053] In the first embodiment, the peripheral side of the wire limiting tube 52 has a wire notch 521, and the wire notch 521 runs through the opposite ends of the wire limiting tube 52, which helps to reduce the production materials of the wire limiting tube 52. The inner side wall of the wire limiting tube 52 and the inner side wall of the lifting rod group 400 enclose a limiting space 522, and the limiting space 522 is used to limit the movement of the wire on the side of the transmission screw 32 to prevent the wire from contacting the transmission screw 32. At the same time, the wire limiting rod with the wire notch 521 helps to reduce the occupancy rate of the wire limiting tube 52 on the space inside the second sleeve 42 and the first sleeve 41, and when disassembling or repairing the fan, it is convenient to remove the wire for inspection. In other embodiments, there may be no wire notch 521.

[0054] In the first embodiment, the second sleeve 42 has a mounting protrusion 423 extending toward the axis at one end near the driving member 31, and the nut 424 is connected to the mounting protrusion 423 by a screw. When the thread is worn, the nut 424 can be replaced, which is convenient for repairing the lifting rod assembly 400 and reduces the maintenance cost. The mounting protrusion 423 is provided with a through hole 425 for avoiding the wire limiting tube 52. The limiting contact between the through hole 425 and the wire limiting rod can also prevent the nut 424 from rotating with the screw. In other embodiments, the nut 424 and the mounting protrusion 423 can also be integrally formed.

[0055] In the first embodiment, the driving assembly 300 further includes a bearing 33 and a bearing fixing seat 34. The bearing 33 is sleeved on the outer periphery of the driving screw 32 to straighten the rotation axis of the rotating screw. The bearing fixing seat 34 can be movably connected with the bearing 33 and can install the driving member 31. Furthermore, a mounting ring 523 is provided at one end of the wire limiting tube 52 close to the driving member 31. The mounting ring 523 is provided between the end surface of the first sleeve 41 and the bearing fixing seat 34 to fix the wire limiting rod. In other embodiments, the bearing 33 may not be provided, and a concentric ring is convexly provided at the end of the first sleeve 41 close to the driving member 31. The inner circumference of the concentric ring abuts against the driving screw 32, and the inner circumference is coated with lubricating grease.

[0056] In a first embodiment, the cross-sectional shape of the thread on the transmission threaded rod is configured as one of a triangle, a trapezoid and a rectangle, and the transmission threaded rod includes one of a single-start threaded rod, a double-start threaded rod and a multi-start threaded rod.

[0057] See also Figures 9 to 13 In the second embodiment, except for the wire protection assembly 500, the structures of the other components in the lifting fan are consistent with those of the first embodiment, so it has at least all the beneficial effects brought by the technical solution of the first embodiment, which will not be repeated here. The partition structure 51 can also include a partition 512 and a partition support frame 513, and the two ends of the partition 512 are respectively formed with the accommodating chamber 421 and the transmission chamber 422, that is, in the second position, the wire hole 511 is disengaged from the wire limiting tube 52, and the wire hole 511 and the avoidance hole 514 are both provided on the partition 512, and the aperture of the avoidance hole 514 is larger than the straight rod diameter of the transmission screw 32 and smaller than the thread diameter of the transmission screw 32, and the partition support frame 513 supports the partition 512 to install the partition 512 on the second sleeve 42. The partition support frame 513 extends along the extension direction of the second sleeve 42 so that the partition support frame 513 is connected to the end surface of the second sleeve 42 close to the driving member 31, and the partition 512 and the partition support frame 513 are fixed by screws.

[0058] It should be noted that the impeller assembly 12 includes an impeller and an impeller driving member 31. The impeller driving member 31 and the driving member 31 are both configured as motors and need to be connected to an external power supply. Therefore, the driving member 31 and the impeller driving member 31 are both provided with wires connected to the external power supply. Since the lifting fan usually has only one outlet, and the outlet is usually installed on the base 200 or the fan cover 11, the driving member 31 can be set on the fan cover 11 or the base 200. Therefore, there are two situations in which the wires need to pass through the lifting rod assembly 400. The first situation is that the driving member 31 is arranged on the base 200, and the wire outlet is arranged on the fan cover 11. At this time, the first sleeve 41 is connected to the base 200, and the second sleeve 42 is connected to the fan cover 11. The wires are stacked in the accommodating chamber 421 in the second sleeve 42. At this time, the accommodating chamber 421 is close to the fan cover 11; the second situation is that the driving member 31 is arranged on the top seat, and the wire outlet is arranged on the base 200. At this time, the first sleeve 41 is connected to the fan cover 11, and the second sleeve 42 is connected to the base 200. The wires are stacked in the accommodating chamber 421 in the second sleeve 42. At this time, the accommodating chamber 421 is close to the base 200.

[0059] In the first embodiment, when the second sleeve 42 is located at the first position and the second position, the wire hole 511 on the partition structure 51 maintains a plug-in relationship with the wire limiting tube 52, completely isolating the wire from contacting the transmission screw 32, and can be applied to the lifting fan in the first case and the lifting fan in the second case. In the second embodiment, when the second sleeve 42 is located at the second position, the wire hole 511 on the partition 512 is separated from the wire limiting tube 52. At this time, in the lifting fan in the second case, under the interference of the wire's own gravity, when the second sleeve 42 moves to the first position, the wire can smoothly pass through the wire hole 511 and be re-stacked in the accommodating chamber 421.

[0060] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lifting fan, provided with an electric wire capable of being electrically connected to an external power source, and a power supply wire extending out of a wire outlet of the lifting fan, characterized in that: include: A fan head, comprising a fan housing and an impeller assembly, wherein the impeller assembly is used to fan the airflow; A base, wherein the cable outlet is provided at one of the base and the fan housing; A driving assembly, comprising a driving member and a transmission screw, wherein the driving member is disposed on the other of the fan housing and the base, and the driving member is drivingly connected to the transmission screw; A lifting rod assembly, one end of which is connected to the base, and the other end of which is connected to the fan housing, the lifting rod assembly comprising a first sleeve and a second sleeve which are sleeved together, the first sleeve being arranged close to the driving member, the second sleeve being drivingly connected to the driving screw, the second sleeve having a first position and a second position, in the first position, the second sleeve is close to the first sleeve, and in the second position, the second sleeve is far away from the first sleeve; as well as A wire protection assembly is arranged in the second sleeve and includes a partition structure. The second sleeve includes a receiving chamber and a transmission chamber. The receiving chamber is used to receive stacked wires, and the transmission chamber is used for the transmission screw to extend therein. A wire passing hole is provided on the partition structure. The wire passing hole connects the receiving chamber and the transmission chamber and is arranged close to the tube wall of the second sleeve to allow the wire to pass through. In the first position, the partition structure is close to an end of the transmission screw away from the driving member.

2. The lifting fan according to claim 1, characterized in that: The wire protection assembly also includes a wire limiting tube, which is installed on the same side as the transmission screw, and the end of the transmission screw is close to the end of the wire limiting tube. In the first position, at least part of the structure of the wire limiting tube is inserted into the wire passing hole.

3. The lifting fan according to claim 2, characterized in that: The partition structure extends along the extension direction of the second sleeve, the transmission chamber is formed on the partition structure, the inner wall surface of the second sleeve and the end surface of the partition structure away from the driving member enclose the accommodating chamber, and at the first position and the second position, at least part of the structure of the wire limiting tube is inserted into the wire passing hole.

4. The lifting fan according to claim 2, characterized in that: The partition structure includes a partition and a partition support frame, the accommodating chamber and the transmission chamber are respectively formed at both ends of the partition, the wire hole is arranged on the partition, and the partition support frame supports the partition so as to install the partition on the second sleeve.

5. The lifting fan according to any one of claims 3 and 4, characterized in that The partition structure comprises an avoidance hole, which is arranged in the central area of ​​the partition structure and passes through the partition structure. Two wire-passing holes are provided and are arranged on two opposite sides of the partition structure.

6. The lifting fan according to claim 5, characterized in that: The partition structure and the second sleeve are integrally formed.

7. The lifting fan according to claim 2, characterized in that: The peripheral side of the wire limiting tube is provided with a wire passing notch, and the wire passing notch passes through the opposite ends of the wire limiting tube. The inner side wall of the wire limiting tube and the inner side wall of the lifting rod group enclose a limiting space.

8. The lifting fan according to claim 2, characterized in that: A nut is provided on one end of the second sleeve close to the driving member, and the transmission screw is rotatably connected through the nut to enable the lifting rod group to move up and down.

9. The lifting fan according to claim 8, characterized in that: The second sleeve has a mounting protrusion extending toward the axis at one end close to the driving member, the nut is connected to the mounting protrusion by a screw, and the mounting protrusion is provided with a through hole for avoiding the electric wire limiting tube.

10. The lifting fan according to claim 1, characterized in that: The cross-sectional shape of the thread on the drive screw is configured as one of a triangle, a trapezoid and a rectangle; And / or, the transmission screw includes one of a single-start threaded rod, a double-start threaded rod and a multi-start threaded rod.

Images