CN113187744B

CN113187744B - Air supply device

Info

Publication number: CN113187744B
Application number: CN202010035886.9A
Authority: CN
Inventors: 曹代科; 陈飞帆; 吴波; 谢昭家; 张乾; 梁耀光; 张振
Original assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2024-03-08
Anticipated expiration: 2040-01-14
Also published as: CN113187744A

Abstract

The invention discloses an air supply device, which comprises: a body; a blade pivotally disposed on the body, the blade having a retracted position and an extended position, the body having a first drive member by which the blade is driven from the retracted position to the extended position; and the storage part is provided with a second driving piece, the second driving piece is connected with the blade, and the second driving piece is used for driving the blade to move from the stretching position to the retracting position. Therefore, through the cooperation of body, blade, first driving piece and second driving piece, when air supply arrangement's blade is inoperative, can shrink the blade to the position of retrieving, can avoid gathering the dust on the blade, and also can reduce air supply arrangement's volume, can reduce air supply arrangement and occupy indoor space, also can make air supply arrangement more pleasing to the eye, simultaneously, compare with prior art, air supply arrangement uses the back for a long time, can guarantee that the blade normally contracts to the position of retrieving, thereby can guarantee air supply arrangement's operational reliability.

Description

Air supply device

Technical Field

The invention relates to the field of household appliances, in particular to an air supply device.

Background

The air supply device is hoisted on the roof, when the air supply device is not used, the blades of the air supply device are stretched, dust is easy to accumulate on the blades, the size of the blades is large, the occupied indoor space is large, and the attractiveness of the air supply device is also influenced.

In the related art, many companies begin to develop retractable blade structures, and the current common blade retraction mode is mainly realized by using an elastic structure, but the elastic structure is easy to age and lose efficacy, and the blades are difficult to return normally after long-term use.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an air blower that can ensure that the blades are normally retracted to the retracted position after a long period of use, thereby ensuring the operational reliability of the air blower.

The air supply device according to the present invention includes: a body; a blade pivotably disposed to the body, the blade having a retracted position and an extended position, the body having a first drive for driving the blade from the retracted position to the extended position; the storage part is connected with the blade, the storage part is provided with a second driving piece, the second driving piece is connected with the blade, and the second driving piece is used for driving the blade to move from the extension position to the retraction position.

According to the air supply device, the body, the blades, the first driving piece and the second driving piece are matched, when the blades of the air supply device do not work, the blades can be contracted to the retracted position, dust accumulation on the blades can be avoided, the volume of the air supply device can be reduced, the indoor space occupied by the air supply device can be reduced, the air supply device is more attractive, and meanwhile, compared with the prior art, the air supply device can ensure that the blades are normally contracted to the retracted position after being used for a long time, so that the working reliability of the air supply device can be ensured.

In some examples of the invention, the second driving member is not in the same horizontal plane as the blade, and the second driving member is connected to one end of the blade and drives the blade to rotate about an axis perpendicular to the plane in which the blade lies.

In some examples of the invention, the second drive is configured to drive the blade from the extended position to the retracted position by gravity.

In some examples of the present invention, the plurality of blades, the air supply device further includes: and a linkage mechanism configured to link a plurality of the blades.

In some examples of the invention, the linkage comprises: the linkage plate and the linkage rod are connected between the linkage plate and the blade.

In some examples of the invention, the blade has a blade rotating portion rotatably provided to the body, and the link lever is connected between the blade rotating portion and the link plate.

In some examples of the invention, the linkage disc is centrally disposed, the plurality of vane turns are disposed about the linkage disc, a radially inner end of the linkage rod is eccentrically connected to the linkage disc, and a radially outer end of the linkage rod is eccentrically connected to the vane turns.

In some examples of the invention, the second drive member is coupled to the linkage disc to drive rotation of the linkage disc.

In some examples of the invention, an intermediate transmission mechanism is provided between the second drive member and the linkage disc.

In some examples of the invention, the intermediate transmission includes: the rope comprises a rope body and a switching shaft, wherein a first end of the rope body is connected with the second driving piece, a second end of the rope body spans the switching shaft and then is connected with the linkage disc, and the parts of the rope body, which are positioned at the first end and the second end of the rope body, can be slidably pressed against the switching shaft.

In some examples of the invention, the intermediate transmission further comprises: the second end of the rope body is connected with the linkage disc through the sliding shaft, and the sliding shaft penetrates through the body and can slide relative to the body.

In some examples of the present invention, the body is provided with a through sliding groove, and the sliding shaft penetrates through the sliding groove.

In some examples of the present invention, the sliding grooves are plural, and each of the inner sides of the blades corresponds to a section of the sliding groove, and the plural blades surround the plural sliding grooves.

In some examples of the invention, the second driver is located on a first side of the body and the second end of the rope is located on a second side of the body.

In some examples of the present invention, an end of the sliding shaft near the second driving member is connected to the linkage disc, and an end of the sliding shaft far from the second driving member is provided with an enlarged portion and is connected to the second end of the rope body.

In some examples of the invention, the adapter shaft is disposed on a surface of the body facing away from the second driver.

In some examples of the invention, the free end of the adapter shaft is provided with a limiting part for stopping the rope body.

In some examples of the invention, the body has a first through hole, the linkage disc has a second through hole opposite the first through hole, and the rope penetrates through both the first through hole and the second through hole.

In some examples of the invention, the second drive is located on a first side of the body and the linkage disc is located between the second drive and the body.

In some examples of the invention, the outer edge of the blade is flush with or inboard of the outer edge of the body when the blade is in the retracted position.

In some examples of the invention, the blade has a blade rotating portion rotatably provided to the body, and a rope having a first end connected to the second driving member and a second end connected to the blade rotating portion.

In some examples of the invention, the body is provided with a drum that is supported below the rope.

In some examples of the invention, the rope is connected to the second drive member by a bearing.

In some examples of the invention, the second driving member is a light fixture or a weight.

In some examples of the invention, the sliding channel is configured as an arc.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an air supply device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an air moving device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a blower according to an embodiment of the invention with a blade in a retracted position;

fig. 4 is an enlarged view at a in fig. 3;

FIG. 5 is a schematic view of a blower according to an embodiment of the invention with a blade in an extended position;

FIG. 6 is a partial cross-sectional view of a blower according to an embodiment of the invention;

FIG. 7 is a schematic view of a blower according to an embodiment of the invention with a blade in an extended position;

FIG. 8 is a schematic view of a blower according to an embodiment of the invention with a blade in a retracted position;

FIG. 9 is a bottom view of the assembled body, linkage disc, blade and linkage rod according to an embodiment of the present invention;

fig. 10 is a schematic view of another embodiment of an air supply device according to an embodiment of the present invention.

Reference numerals:

an air supply device 10;

a body 1; a sliding groove 11; a first through hole 12;

a blade 2; a blade rotating portion 21;

a second driving member 3;

a linkage disc 4; a link lever 41; a second through hole 42;

a rope 5; a switching shaft 51; a slide shaft 52; an enlarged portion 53; a stopper 54;

a drum 6; a bearing 7; a housing 8; a motor 9; boom 91.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Referring now to fig. 1-10, a blower 10 according to an embodiment of the present invention is described, wherein the blower 10 may be a ceiling fan.

As shown in fig. 1 to 9, an air supply device 10 according to a first embodiment of the present invention includes: a body 1, a blade 2 and a receiving portion. The blade 2 is pivotally arranged on the body 1, that is to say, the blade 2 is rotatable relative to the body 1, the blade 2 has a retracted position and an extended position, it is to be noted that, in a plane parallel to the body 1, when the blade 2 is in the retracted position, the blade 2 is rotated toward the center of the body 1, and when the blade 2 is in the extended position, the blade 2 is rotated in a direction away from the body 1 to extend the blade 2, the body 1 has a first driving member 9 (i.e., a motor) for driving the body 1 to rotate against the gravity of the blade 2 under the action of centrifugal force to move the blade 2 from the retracted position to the extended position. The housing is connected to the blade 2, the housing is for driving the blade 2 from the extended position to the retracted position, the housing has a second driving member 3, the second driving member 3 is connected to the blade 2, it should be noted that the second driving member 3 is not limited to a direct connection to the blade 2, the second driving member 3 may be indirectly connected to the blade 2, and the second driving member 3 is for driving the blade 2 from the extended position to the retracted position.

And the second driving member 3 is adapted to drive the blade 2 from the extended position to the retracted position by gravity, while the second driving member 3 is adapted to hold the blade 2 in the retracted position by gravity, it being explained that the second driving member 3 can hold the blade 2 in the retracted position by gravity when the blade 2 is in the retracted position, and that the blade 2 can be moved from the retracted position to the extended position by rotating the body 1 against the gravity of the second driving member 3 and the blade 2 by centrifugal force.

When the air supply device 10 is required to blow air, the motor 9 of the air supply device 10 drives the body 1 to rotate, after the rotation speed of the body 1 reaches a preset value, the gravity of the second driving piece 3 and the blade 2 is overcome to enable the blade 2 to rotate relative to the body 1 under the action of centrifugal force, so that the blade 2 is thrown out, after the blade 2 is completely stretched (i.e. after the blade 2 is positioned at the stretching position), the blade 2 rotates at the same speed along with the body 1, and the air blowing of the air supply device 10 is realized. When the air supply device 10 is required to stop working, the motor 9 stops working, after the rotation speed of the body 1 is smaller than a preset value, the gravity of the second driving piece 3 is larger than the centrifugal force, the second driving piece 3 moves downwards, and the second driving piece 3 pulls the blade 2 to enable the blade 2 to rotate from the extended position to the retracted position, so that the blade 2 is kept at the retracted position. When the blade 2 of the air supply device 10 does not work, the blade 2 can be retracted to the retracted position, dust accumulated on the blade 2 can be avoided, so that the number of times of cleaning the blade 2 by a user can be reduced, the volume of the air supply device 10 can be reduced, the indoor space occupied by the air supply device 10 can be reduced, and the air supply device 10 can be more attractive. Meanwhile, compared with the prior art, after the air supply device 10 is used for a long time, the blades 2 can be guaranteed to be normally contracted to the retracted position, so that the working reliability of the air supply device 10 can be guaranteed, and the problem that the blades of the existing air supply device are difficult to return normally can be solved. In addition, the blower 10 of the present application has a simple structure, and can reduce the manufacturing cost of the blower 10 and improve the operation stability of the blower 10.

The second driving piece 3 is not on the same horizontal plane with the blade 2, the second driving piece 3 is connected with one end of the blade 2, and the second driving piece 3 drives the blade 2 to rotate around the axis perpendicular to the plane where the blade 2 is located, so that the second driving piece 3 can drive the blade 2 to move from the extending position to the retracting position under the action of gravity, and the arrangement position of the second driving piece 3 and the blade 2 can be more reasonable.

As shown in fig. 8, the blade 2 may be provided in plural, for example: the number of the blades 2 is three, and the air supply device 10 may further include: the linkage mechanism can be used for linking the plurality of blades 2, and it is to be explained that by arranging the linkage mechanism, the plurality of blades 2 can be rotated simultaneously, and the plurality of blades 2 can be moved to the retracted position or the extended position simultaneously, so that the conditions that part of the blades 2 are extended and part of the blades 2 are not extended can be prevented, and the air supply effect of the air supply device 10 can be ensured.

As shown in fig. 9, the linkage mechanism may include: a linkage disc 4 and a linkage rod 41, the linkage rod 41 may be connected between the linkage disc 4 and the blade 2. When the blades 2 rotate relative to the body 1, the blades 2 pull the linkage rod 41 to move, and when the linkage rod 41 moves, the linkage disc 4 is pulled to rotate, so that the blades 2 rotate together, and the action consistency of the blades 2 can be improved.

As shown in fig. 5, the blade 2 has a blade rotating portion 21, the blade rotating portion 21 is rotatably provided to the body 1, and the link lever 41 is connected between the blade rotating portion 21 and the link plate 4. Wherein, the gangbar 41 and the blade rotating part 21, the gangbar 41 and the gangbar 4 are all connected together through the articulated mode, when the air supply device 10 is required to work, the body 1 rotates, the blade 2 rotates relative to the body 1 under the action of centrifugal force, and in the rotation process of the blade 2, the gangbar 41 is pulled by the blade rotating part 21 to drive the gangbar 4 to rotate, so that a plurality of blades 2 rotate together, and the second driving piece 3 can also be lifted.

As shown in fig. 2, the linkage disc 4 is centrally disposed, wherein the body 1 and the linkage disc 4 may be configured as a disc structure, the rotation center of the body 1 and the rotation center of the linkage disc 4 are overlapped in the up-down direction, and the plurality of blade rotating portions 21 are disposed around the linkage disc 4, so that the mass distribution of the air supply device 10 is more uniform, and the shake of the air supply device 10 can be reduced when the body 1 and the linkage disc 4 rotate, thereby improving the working stability of the air supply device 10. The inner radial end of the link lever 41 is eccentrically connected to the link plate 4, and the outer radial end of the link lever 41 is eccentrically connected to the blade rotation portion 21, that is, the inner radial end of the link lever 41 does not overlap with the center of the link plate 4, and the outer radial end of the link lever 41 does not overlap with the center of the blade rotation portion 21, so that the link plate 4 can be driven to rotate when the blades 2 rotate, and the consistency of the actions of the plurality of blades 2 can be further improved.

As shown in fig. 6, the second driving member 3 is connected to the linkage disc 4, and the second driving member 3 can drive the linkage disc 4 to rotate. When the air supply device 10 works, the body 1 rotates, the blades 2 rotate relative to the body 1 under the action of centrifugal force, and in the rotation process of the blades 2, the linkage rod 41 is pulled by the blade rotating part 21 to drive the linkage disc 4 to rotate, and the linkage disc 4 can pull the second driving piece 3 upwards in the rotation process. When the blade 2 stops working, the second driving member 3 descends under the action of gravity, and when the second driving member 3 descends, the second driving member 3 pulls the linkage disc 4 to rotate, and when the linkage disc 4 rotates, the blade 2 is pulled to rotate to the retracted position, so that the blade 2 is retracted.

As shown in fig. 6 and 7, an intermediate transmission mechanism may be disposed between the second driving member 3 and the linkage disc 4, and the intermediate transmission mechanism may be capable of connecting the second driving member 3 and the linkage disc 4 together, preventing the second driving member 3 from being separated from the linkage disc 4, and also enabling power transmission between the second driving member 3 and the linkage disc 4.

As shown in fig. 6 and 7, the intermediate transmission mechanism includes: the rope body 5 and the adapter shaft 51, the first end of the rope body 5 links to each other with the second driving piece 3, and the second end of the rope body 5 is connected with the linkage disc 4 after crossing the adapter shaft 51, and it should be noted that, the first end of the rope body 5 refers to the lower extreme of the rope body 5 in fig. 2, the second end of the rope body 5 refers to the upper end of the rope body 5 in fig. 2, the upper end of the rope body 5 links to each other with the linkage disc 4, and the part that lies in the first end and the second end of the rope body 5 slidably presses the adapter shaft 51. Wherein, through setting up rope body 5 can link together linkage dish 4 and second driving piece 3 reliably, can make the connection structure between linkage dish 4 and the second driving piece 3 simpler to can simplify the structure of air supply arrangement 10. The adapter shaft 51 can support the rope 5, and can prevent the rope 5 from loosening.

As shown in fig. 3, the intermediate transmission mechanism may further include: the second end of the rope body 5 is connected with the linkage disc 4 through the sliding shaft 52, the sliding shaft 52 penetrates through the body 1, that is, the sliding shaft 52 penetrates through the body 1 and is slidable relative to the body 1, so that the rope body 5 can be connected with the linkage disc 4 conveniently, the air supply device 10 can be assembled more conveniently, the position of the sliding shaft 52 relative to the body 1 can be adjusted, the opening and the retraction of the blades 2 can be guaranteed, and the movement of the blades 2 between the retracted position and the extended position can be guaranteed.

As shown in fig. 3, the body 1 may be provided with a through sliding groove 11, and the sliding shaft 52 is inserted into the sliding groove 11, where when the linkage disc 4 rotates relative to the body 1, the sliding groove 11 can play a role in guiding the sliding shaft 52, so that the sliding shaft 52 slides on a predetermined track, thereby ensuring the rotation stability of the linkage disc 4.

The sliding groove 11 can be configured to be arc-shaped, wherein, as the movement track of the sliding shaft 52 is arc-shaped, the arrangement can ensure that the linkage disc 4 rotates normally, and the linkage disc 4 can be prevented from being blocked, so that the smooth retraction of the blade 2 can be ensured, and the extension of the blade 2 can be ensured.

As shown in fig. 6, the second driving element 3 may be located at a first side of the body 1, the second end of the rope 5 is located at a second side of the body 1, where the first side of the body 1 is referred to as a lower side of the body 1, and the second side of the body 1 is referred to as an upper side of the body 1, where, after the sliding shaft 52 passes through the sliding groove 11, the rope 5 presses against the adapting shaft 51, it is more convenient for the rope 5 to be connected with the sliding shaft 52, so as to reduce the arrangement length of the rope 5, and further make the arrangement modes of the second driving element 3, the body 1 and the rope 5 more reasonable.

One end of the sliding shaft 52 near the second driving member 3 is connected to the linking plate 4, for example: the lower end of the sliding shaft 52 is connected to the linkage disc 4, specifically, the sliding shaft 52 passes through the linkage disc 4 and then is connected to the linkage rod 41, the linkage rod 41 is pivotable relative to the sliding shaft 52, and one end of the sliding shaft 52 away from the second driving member 3 is provided with an enlarged portion 53 and is connected to the second end of the rope 5, for example: the upper end of the sliding shaft 52 is provided with an expansion part 53 and is connected with the second end of the rope body 5, wherein the expansion part 53 of the sliding shaft 52 is positioned above the body 1, and after the air supply device 10 is installed, the expansion part 53 can prevent the sliding shaft 52 from separating from the sliding groove 11, so that the position stability of the linkage disc 4 can be better ensured, and the overall assembly strength of the air supply device 10 can be improved.

As shown in fig. 6, in the up-down direction, the second driving member 3 is located at the first side of the body 1, and the linkage disc 4 is located between the second driving member 3 and the body 1, so that the second driving member 3 can be guaranteed to rotate together with the linkage disc 4, and in the extending process of the blade 2, the linkage disc 4 can be guaranteed to be capable of pulling the second driving member 3 to ascend, so that the arrangement positions of the second driving member 3, the linkage disc 4 and the body 1 are more reasonable.

As shown in fig. 8, the sliding grooves 11 may be provided in plural, and each vane 2 may have a length of the sliding groove 11 on the inner side, that is, one sliding groove 11 on the inner side of each vane 2, and the plurality of vanes 2 may surround the plurality of sliding grooves 11. Wherein the plurality of vanes 2 and the plurality of sliding grooves 11 are in one-to-one correspondence, for example: the number of the blades 2 and the number of the sliding grooves 11 are three, when the blades 2 are located at the retracted position, the inner side of one blade 2 corresponds to one section of the sliding groove 11 in the radial direction of the body 1, so that the weight of the blades 2 can be distributed on the body 1 more uniformly, and the body 1 can be rotated smoothly when rotated, so that shaking of the body 1 can be reduced.

As shown in fig. 1, a housing 8 is disposed above the blade 2, when the blade 2 is in the retracted position, in the radial direction of the body 1, the outer edge of the blade 2 is flush with the outer edge of the body 1 or is located inside the outer edge of the body 1, and in the radial direction of the housing 8, the outer edge of the blade 2 is flush with the outer edge of the housing 8 or is located inside the outer edge of the housing 8, so that the blade 2 can be stored between the housing 8 and the body 1, dust can be further prevented from accumulating on the blade 2, the surface of the blade 2 can be cleaner, and the blade 2 can be prevented from contacting other objects, so that the blade 2 can be prevented from being scratched, and the service life of the blade 2 can be prolonged. Meanwhile, the housing 8 may be hung on the ceiling through a hanger rod 91.

The adapter shaft 51 can be arranged on the surface, deviating from the second driving part 3, of the body 1, and it can be understood that the adapter shaft 51 is arranged on the upper surface of the body 1, so that the rope body 5 can be better supported by the arrangement, and the movement of the rope body 5 can be facilitated, so that the second driving part 3 can be ensured to be lifted smoothly.

As shown in fig. 5, the free end of the adapter shaft 51 may be provided with a limiting portion 54 for stopping the rope 5, so that after the rope 5 is pressed against the adapter shaft 51, the rope 5 can be prevented from being separated from the adapter shaft 51 from the upper end of the adapter shaft 51, and the assembly reliability of the rope 5 and the adapter shaft 51 can be ensured.

As shown in fig. 2, the body 1 may have a first through hole 12, the linkage disc 4 may have a second through hole 42 opposite to the first through hole 12, and the rope 5 passes through the first through hole 12 and the second through hole 42 at the same time, that is, in the up-down direction, the rope 5 passes through the first through hole 12 and the second through hole 42 at the same time, so that the assembly of the rope 5 with the switching shaft 51 and the sliding shaft 52 can be facilitated.

As shown in fig. 3 and 4, the upper surface of the body 1 may be provided with a drum 6, the drum 6 may be supported below the rope 5, and the drum 6 may be disposed near the first through hole 12, wherein the drum 6 may play a guiding role on the rope 5, may facilitate movement of the rope 5, thereby may increase the movement speed of the second driving member 3 in ascending and descending, and may further increase the opening and withdrawing speeds of the blade 2, and meanwhile, since the rope 5 has a bending section at the first through hole 12, the setting may reduce abrasion of the rope 5, and may extend the service life of the rope 5.

As shown in fig. 2 and 6, the rope body 5 is connected with the second driving member 3 through the bearing 7, specifically, a connecting block may be disposed at the lower end of the rope body 5, the connecting block is connected with the inner ring of the bearing 7, the outer ring of the bearing 7 may be connected with the second driving member 3, so that the rotation speed of the linkage disc 4 is prevented from being transmitted to the second driving member 3, the second driving member 3 may be ensured not to rotate, and thus the position stability of the second driving member 3 may be ensured. However, the present invention is not limited thereto, and the rope 5 may be connected by a member having the same function as the bearing 7.

The second driving part 3 is a lamp or a balancing weight, so that the structure of the second driving part 3 can be simplified, and when the second driving part 3 is a lamp, the air supply device 10 can have a lighting function, so that the using range of the air supply device 10 can be increased, and the indoor lamp and the air supply device 10 are arranged at the same position, so that the indoor space can be saved.

As shown in fig. 10, an air blowing device 10 according to a second embodiment of the present invention includes: a body 1, a blade 2 and a receiving portion. The blade 2 is pivotally disposed on the body 1, and the blade 2 has a retracted position and an extended position, and when the blade 2 is in the retracted position, the blade 2 is rotated toward the center of the body 1, and when the blade 2 is in the extended position, the blade 2 is rotated away from the body 1, so that the blade 2 is extended. The body 1 has a first drive member 9 (i.e. a motor) and rotation of the body 1 by the first drive member 9 moves the blade 2 from the retracted position to the extended position against the weight of the blade 2 and the second drive member 3 under centrifugal force.

The housing portion is connected to the blade 2, and is configured to drive the blade 2 from the extended position to the retracted position, and the housing portion has a second driving member 3, and the second driving member 3 is connected to the blade 2, and it should be noted that the second driving member 3 and the blade 2 are not limited to direct connection, the second driving member 3 and the blade 2 may be indirectly connected, the second driving member 3 drives the blade 2 from the extended position to the retracted position, and the second driving member 3 is adapted to drive the blade 2 from the extended position to the retracted position by gravity.

The blade 2 has a blade rotating portion 21 and a rope body 5, the blade rotating portion 21 is rotatably disposed on the body 1, the second driving member 3 is connected with the blade rotating portion 21 through the rope body 5, a first end of the rope body 5 is connected with the second driving member 3, a second end of the rope body 5 is connected with the blade rotating portion, it is to be noted that an upper end of the rope body 5 is connected with the blade rotating portion 21, and a lower end of the rope body 5 is connected with the second driving member 3. The lower surface of the body 1 may be provided with a drum 6, the drum 6 may be supported under the rope 5,

specifically, the second driving member 3 is configured to drive the blade 2 from the extended position to the retracted position by gravity, while the second driving member 3 is adapted to hold the blade 2 in the retracted position by gravity, it being understood that when the blade 2 is in the retracted position, the second driving member 3 may hold the blade 2 in the retracted position by gravity, and that by rotating the body 1 the blade 2 may act from the retracted position to the extended position against the gravity of the second driving member 3 and the blade 2 by centrifugal force.

When the air supply device 10 is required to blow air, the motor 9 of the air supply device 10 drives the body 1 to rotate, after the rotation speed of the body 1 reaches a preset value, the gravity of the second driving piece 3 and the blade 2 is overcome to enable the blade rotating part 21 to rotate relative to the body 1 with the blade 2 under the action of centrifugal force, and at the moment, the rope 5 pulls the second driving piece 3 to rise, so that the blade 2 is thrown out, and after the blade 2 is completely stretched (namely, after the blade 2 is positioned at an stretching position), the blade rotating part 21 rotates with the body 1 at the same speed together with the blade 2, so that the air supply device 10 blows air. When the air supply device 10 is required to stop working, the motor 9 stops working, after the rotation speed of the body 1 is smaller than a preset value, the gravity of the second driving piece 3 is larger than the centrifugal force, the second driving piece 3 moves downwards, the second driving piece 3 pulls the blade rotating part 21 to rotate from the extended position to the retracted position through the rope body 5, and therefore the blade 2 is kept at the retracted position. When the blade 2 of the air supply device 10 does not work, the blade 2 can be retracted to the retracted position, dust accumulated on the blade 2 can be avoided, so that the number of times of cleaning the blade 2 by a user can be reduced, the volume of the air supply device 10 can be reduced, the indoor space occupied by the air supply device 10 can be reduced, and the air supply device 10 can be more attractive. Meanwhile, compared with the prior art, after the air supply device 10 is used for a long time, the blades 2 can be guaranteed to be normally contracted to the retracted position, so that the working reliability of the air supply device 10 can be guaranteed, and the problem that the blades of the existing air supply device are difficult to return normally can be solved. In addition, the blower 10 of the present application has a simple structure, and can reduce the manufacturing cost of the blower 10 and improve the operation stability of the blower 10.

In addition, the rotary motion of the blade rotating part 21 can be converted into the upward motion of the second driving part 3 through the roller 6 supported below the rope body 5, the downward motion of the second driving part 3 can also be converted into the rotary motion of the blade rotating part 21, and when the second driving part 3 moves in the up-and-down direction, the roller 6 can play a guiding role on the rope body 5, so that the movement of the rope body 5 can be facilitated, the movement speed of the second driving part 3 in the up-and-down direction can be improved, the opening and the retracting speed of the blade 2 can be improved, the abrasion of the rope body 5 can be reduced, and the service life of the rope body 5 can be prolonged.

The rope body 5 passes through the bearing 7 and links to each other with the second driving piece 3, and specifically, the lower extreme of rope body 5 can be provided with the connecting block, and the connecting block is connected with the inner circle of bearing 7, and the outer lane of bearing 7 can be connected with the second driving piece 3, so sets up the rotational speed that can prevent the linkage dish 4 and transmit for the second driving piece 3, can guarantee that the second driving piece 3 does not rotate to can guarantee the position stability of second driving piece 3. However, the present invention is not limited thereto, and the rope 5 may be connected by a member having the same function as the bearing 7.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air blowing device, comprising:

a body;

a blade pivotably disposed to the body, the blade having a retracted position and an extended position, the body having a first drive for driving the blade from the retracted position to the extended position;

a housing portion connected to the blade, the housing portion having a second drive member connected to the blade, the second drive member for driving the blade from the extended position to the retracted position;

the second driving piece is used for driving the blade to move from the extending position to the retracting position through the action of gravity; the second driving piece and the blade are not on the same horizontal plane, and the second driving piece is connected with one end of the blade and drives the blade to rotate around an axis perpendicular to the plane where the blade is located.

2. The air blowing device of claim 1, wherein the plurality of blades, the air blowing device further comprising: and a linkage mechanism configured to link a plurality of the blades.

3. The air supply device according to claim 2, wherein the linkage mechanism includes: the linkage plate and the linkage rod are connected between the linkage plate and the blade.

4. A blowing apparatus according to claim 3, wherein the blade has a blade rotating portion rotatably provided to the body, and the link lever is connected between the blade rotating portion and the link plate.

5. The air supply device according to claim 4, wherein the linkage plate is arranged centrally, a plurality of the blade rotating portions are arranged around the linkage plate, a radially inner end of the linkage rod is eccentrically connected to the linkage plate, and a radially outer end of the linkage rod is eccentrically connected to the blade rotating portions.

6. A blowing apparatus according to claim 3, wherein the second driving member is coupled to the linkage disc to drive the linkage disc to rotate.

7. The air supply device of claim 6, wherein an intermediate transmission mechanism is disposed between the second driving member and the linkage disc.

8. The air moving device as claimed in claim 7, wherein said intermediate transmission mechanism comprises:

the rope comprises a rope body and a switching shaft, wherein a first end of the rope body is connected with the second driving piece, a second end of the rope body spans the switching shaft and then is connected with the linkage disc, and the parts of the rope body, which are positioned at the first end and the second end of the rope body, can be slidably pressed against the switching shaft.

9. The air moving device of claim 8, wherein the intermediate transmission mechanism further comprises: the second end of the rope body is connected with the linkage disc through the sliding shaft, and the sliding shaft penetrates through the body and can slide relative to the body.

10. The air supply device according to claim 9, wherein the body is provided with a through sliding groove, and the sliding shaft penetrates through the sliding groove.

11. The air supply device according to claim 10, wherein the plurality of sliding grooves are formed, the inner side of each of the blades corresponds to a section of the sliding groove, and the plurality of blades surround the plurality of sliding grooves.

12. The air moving device as claimed in claim 9, wherein said second driving member is located at a first side of said body, and said second end of said rope is located at a second side of said body.

13. The air supply device according to claim 9, wherein an end of the sliding shaft, which is close to the second driving member, is connected to the linking plate, and an end of the sliding shaft, which is far from the second driving member, is provided with an enlarged portion and is connected to the second end of the rope body.

14. The air moving device as claimed in claim 8, wherein said adapter shaft is provided on a surface of said body facing away from said second driving member.

15. The air supply device according to claim 14, wherein the free end of the adapter shaft is provided with a limiting portion for stopping the rope body.

16. The air blowing apparatus of claim 8, wherein the body has a first through hole, the linkage disc has a second through hole opposite the first through hole, and the rope extends through both the first and second through holes.

17. A blowing apparatus according to claim 3, wherein the second drive member is located on a first side of the body and the linkage disc is located between the second drive member and the body.

18. The air supply device of claim 1, wherein the outer edge of the blade is flush with or inboard of the outer edge of the body when the blade is in the retracted position.

19. The air supply device according to claim 1, wherein the blade has a blade rotating portion rotatably provided to the body, and a rope body having a first end connected to the second driving member and a second end connected to the blade rotating portion.

20. A blowing device according to claim 8 or 19, characterised in that the body is provided with a drum which is supported under the rope.

21. A blowing device according to claim 8 or 19, wherein the rope is connected to the second drive member by means of a bearing.

22. The air supply device according to claim 1, wherein the second driving member is a lamp or a counterweight.

23. The air supply device of claim 10, wherein the sliding slot is configured as an arc.