WO2019007238A1

WO2019007238A1 - Shaft sleeve assembly for fan blade, air duct assembly, and air conditioner

Info

Publication number: WO2019007238A1
Application number: PCT/CN2018/093036
Authority: WO
Inventors: 杨盼; 王富安; 邓浩光
Original assignee: 格力电器（武汉）有限公司; 珠海格力电器股份有限公司
Priority date: 2017-07-05
Filing date: 2018-06-27
Publication date: 2019-01-10
Also published as: CN109209982B; CN109209982A

Abstract

A shaft sleeve assembly for a fan blade, an air duct assembly, and an air conditioner. A shaft support (20) of the shaft sleeve assembly is slidably provided in a base hole (12); one end of a fan blade shaft (42) of a fan blade assembly (40) extends in and is rotatably provided in a shaft hole (21) of the shaft support (20), and the other end of the fan blade shaft (42) is connected to a driving portion (50), wherein the shaft support (20) has a first position and a second position; when the shaft support (20) is at the first position, the fan blade assembly (40) can be driven by the driving portion (50); and when the shaft support (20) is at the second position, the fan blade assembly (40) can move in the axis direction and is separated from the driving portion (50). The shaft sleeve assembly can solve the problem in the prior art of poor reliability of the air conditioner due to the face that an avoidance space is formed at one end of the shell and the fan blade shaft distant from the driving portion, and when the air conditioner is turned off, the fan blade is separated from the driving portion.

Description

Bushing assembly, duct assembly and air conditioner for blades

Technical field

The present invention relates to the field of air conditioner technology, and in particular to a bushing assembly, a duct assembly and an air conditioner for a blade.

Background technique

In the prior art, the connection between the driving portion of the air conditioner and the fan blade is inserted into the blade shaft through the shaft of the driving portion, so that the driving portion drives the blade to rotate. In order to facilitate the disassembly and cleaning of the blades, it is necessary to provide a seating space between the casing of the air conditioner and the end of the blade shaft remote from the driving portion, so that the blade shaft can be moved in the axial direction to be separated from the driving portion. However, when the air conditioner is stopped, the drive unit moves by inertia, and the blades move to the seating space, and the blades are automatically separated from the drive unit, resulting in poor reliability of the air conditioner.

Summary of the invention

The main object of the present invention is to provide a bushing assembly, a duct assembly and an air conditioner for a blade to solve the problem in the prior art that the end of the casing and the blade shaft away from the driving portion has a seating space in the air conditioner. When the device is stopped, the blades are separated from the drive unit, resulting in poor reliability of the air conditioner.

In order to achieve the above object, according to an aspect of the present invention, a bushing assembly for a blade is provided, the bushing assembly including: a base including a base body, the base body having a base hole; and a shaft support a slidably disposed in the base hole, the shaft support has a shaft hole, and one end of the blade shaft of the blade assembly protrudes into the shaft hole and is rotatably disposed in the shaft hole, and the other end of the blade shaft is driven The shaft support has a first position and a second position. When the shaft support is in the first position, the blade assembly can be driven by the drive portion. When the shaft support is in the second position, the blade assembly can be along the shaft hole. The axis moves and is separated from the driving portion.

Further, the shaft support is provided with a first stop for defining a limit position of the blade shaft relative to the driving portion.

Further, the shaft support comprises: a circumferential side wall, the circumferential side wall enclosing the shaft hole; and an end wall connected to one end of the circumferential side wall, the end wall forming a first stop portion.

Further, the shaft support further includes a plurality of axial ribs spaced apart on the outer wall of the circumferential side wall, the shaft support being in interference fit with the base by the axial ribs.

Further, the circumferential sidewall includes a first segment, a second segment, and a mating segment that are sequentially connected and sequentially increased in outer diameter, and the end wall is connected to an end of the first segment that is away from the second segment, and the mating segment is matched with the base hole. The first through section, the second section, and the inner through holes of the mating section together form a shaft hole.

Further, the sleeve assembly further includes a switching portion that cooperates with the shaft support, the switching portion is configured to switch between the first position and the second position of the drive shaft support, and at least a portion of the switching portion protrudes out of the base to form Operation department.

Further, the switching portion includes a dial plate, and the base body is provided with a first dial hole communicating with the base hole, and the shaft support member has a second dial hole corresponding to the first dial hole, and the dial plate One end passes through the first pad hole and is inserted into the second pad hole to connect the switching portion with the shaft support, and the second end of the pad extends out of the base body to form an operation portion.

Further, the switching portion further includes a retaining portion connected to the dial, the shaft support further comprising a retaining groove disposed on the hole wall of the second dial hole, when the first dial hole is inserted into the second dial hole The retaining portion is engaged with the anti-drop groove to prevent the dial from coming out of the second dial hole.

Further, the base further includes a first limiting portion connected to the base body, the switching portion further has a second limiting portion engaged with the first limiting portion to lock the shaft supporting member in the first position or the second position.

Further, the switching portion includes a dial plate and a positioning plate connected to the dial plate, the positioning plate is located outside the base body, and the first limiting portion includes a plurality of first protrusions on the outer wall of the base body, the plurality of a protrusion is spaced apart in a direction parallel to a center line of the base body, the second limiting portion is a second protrusion disposed on a surface of the positioning plate facing the base body, and the switching portion drives the shaft support on the base The second protrusion selectively snaps into engagement with two of the plurality of first protrusions when moving in the hole to lock the shaft support in the first position or the second position.

Further, the base further includes a second stop disposed on the inner wall of the base body, the second stop for preventing the shaft support from coming out of the base hole.

Further, the hole wall of the shaft hole is provided with a bearing groove, and the sleeve assembly further includes a bearing disposed in the bearing groove, the blade shaft passing through the bearing hole of the bearing and slidable relative to the bearing.

According to another aspect of the present invention, a duct assembly is provided, the duct assembly including a mount, a sleeve assembly coupled to the mount, and a vane assembly disposed on the sleeve assembly, the sleeve assembly being the aforementioned shaft The sleeve assembly is movably disposed relative to the mount in the axial direction of the shaft bore of the sleeve assembly.

Further, when the shaft support of the sleeve assembly is in the first position, there is a space between the end surface of the blade shaft remote from the driving portion and the end wall of the shaft support to move the blade shaft in the shaft hole.

According to a third aspect of the invention, there is provided an air conditioner comprising a housing and a duct assembly disposed within the housing, the duct assembly being the aforementioned duct assembly.

According to the technical solution of the present invention, when the shaft support is in the first position, the blade assembly can be ensured to cooperate with the driving portion when the air conditioner is in the working state and in the stopped state, thereby ensuring that the blade assembly can be driven by the driving portion. When the air conditioner is stopped, the fan blade assembly is separated from the driving portion by the inertial force, and the reliability of the air conditioner operation is good. At the same time, when the shaft support is in the second position, the vane assembly can be separated from the drive portion, which facilitates disassembly of the duct assembly for cleaning.

DRAWINGS

The accompanying drawings, which are incorporated in the claims of the claims In the drawing:

Figure 1 shows a front view of an embodiment of an air conditioner according to the present invention;

2 is a schematic structural view showing the air duct assembly of the air conditioner of FIG. 1 separated from the outer casing;

Figure 3 is a perspective view showing the structure of the bushing assembly of the air duct assembly of Figure 2;

Figure 4 shows an exploded view of the bushing assembly of Figure 3;

Figure 5 is a perspective view showing the structure of the base of the bushing assembly of Figure 3;

Figure 6 is a perspective view showing the shaft support of the bushing assembly of Figure 3;

Figure 7 is a structural schematic view showing the shaft support of the bushing assembly of Figure 3 separated from the bearing;

Figure 8 is a perspective view showing the switching structure of the bushing assembly of Figure 3;

Figure 9 shows a cross-sectional view of the bushing assembly of Figure 3 (the shaft support is in the first position);

Figure 10 shows a cross-sectional view of the bushing assembly of Figure 3 (the shaft support is in the second position);

Figure 11 is a block diagram showing another embodiment of the switching portion of the bushing assembly of Figure 3;

Figure 12 is a partial enlarged view of Figure 11;

Figure 13 shows a cross-sectional view of the blade assembly assembled to the bushing assembly of Figure 3 (the shaft support is in the first position, the air conditioner is in operation);

Figure 14 shows a cross-sectional view of the blade assembly assembled to the bushing assembly of Figure 3 (the shaft support is in the first position, the air conditioner is in a stopped state);

Figure 15 shows a cross-sectional view of the blade assembly assembled to the bushing assembly of Figure 3 (the shaft support is in the second position and the air conditioner is in a state to be disassembled).

Wherein, the above figures include the following reference numerals:

10, the base; 11, the base body; 12, the base hole; 13, the first pad hole; 14, the first protrusion; 15, the second stop; 20, the shaft support; 21, the shaft hole 22, circumferential side wall; 23, end wall; 24, second dial hole; 25, anti-drop groove; 26, bearing groove; 27, axial rib; 221, first paragraph; 222, second paragraph 223, mating section; 30, switching part; 31, dialing plate; 32, anti-off part; 33, positioning plate; 34, second protrusion; 40, blade assembly; 41, fan blade; 50, drive unit; 60, bearing; 70, mount; 80, housing.

Detailed ways

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

It should be noted that the following detailed description is illustrative and is intended to provide a further description of the application. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise indicated.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. The following description of the at least one exemplary embodiment is merely illustrative and is in no way All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The present invention provides a bushing assembly, a duct assembly and an air conditioner for a blade.

As shown in FIGS. 1 and 2, in an embodiment of the present invention, an air conditioner includes a housing 80 and a duct assembly disposed within the housing 80.

The drive unit 50 of the air conditioner is fixedly coupled to the outer casing 80.

Alternatively, the driving portion 50 is a motor.

As shown in Figures 1 and 2, in an embodiment of the invention, the air duct assembly includes a mounting base 70, a bushing assembly coupled to the mounting base 70, and a vane assembly 40 disposed on the bushing assembly. The blade assembly 40 is movably disposed relative to the mount 70 in the axial direction of the shaft hole 21 of the bushing assembly.

The blade assembly 40 includes a blade 41 and a blade shaft 42 coupled to the blade 41. The blade shaft 42 includes a first end shaft and a second end shaft, the first end shaft and the second end shaft being coupled to both ends of the blade shaft 42, respectively. The second end shaft has a fitting portion that cooperates with the driving portion 50.

In the embodiment of the present invention and the present invention, in order to solve the problem in the prior art, the end of the casing and the blade shaft away from the driving portion has a seating space, and when the air conditioner stops operating, the blade is separated from the driving portion, resulting in separation of the blade. The reliability of the air conditioner is poor, and the structure of the bushing assembly is improved. The following is a detailed description:

As shown in FIGS. 2 through 4, in an embodiment of the present invention, a bushing assembly for a blade includes a base 10 and a shaft support 20. The base 10 includes a base body 11 having a base aperture 12. The shaft support 20 is slidably disposed in the base hole 12, and the shaft support 20 has a shaft hole 21. One end of the vane shaft 42 of the vane assembly 40 projects into the shaft hole 21 and is rotatably provided in the shaft hole 21, and the other end of the vane shaft 42 is connected to the driving portion 50. As shown in Figures 9 and 10, the axle support 20 has a first position and a second position. When the shaft support 20 is in the first position, the blade assembly 40 can be driven by the driving portion 50; when the shaft support 20 is in the second position, the blade assembly 40 can be moved along the axis direction of the shaft hole 21 and with the driving portion 50 separation.

With the above arrangement, since the shaft support 20 is slidably disposed in the base hole 12 and has the first position and the second position, when the shaft support 20 is in the first position, the blade assembly 40 can be ensured in the air conditioner Both the working state and the stop state cooperate with the driving portion 50 to ensure that the blade assembly 40 can be driven by the driving portion 50 to prevent the blade assembly 40 from being separated from the driving portion 50 by the inertial force when the air conditioner is stopped, thereby improving the air conditioner. Reliability of operation. At the same time, when the shaft support 20 is in the second position, the blade assembly 40 can be moved in the axial direction of the shaft hole 21 and separated from the driving portion 50, which facilitates the removal of the air duct assembly for cleaning.

Specifically, as shown in FIGS. 1 and 2, the boss assembly is disposed at one end of the mount 70 away from the driving portion 50, and the base 10 is coupled to the mount 70. The duct assembly also includes a fixed bushing assembly disposed at one end of the mount 70 proximate the drive portion 50. The bushing assembly and the fixed bushing assembly are respectively used to support both ends of the vane assembly 40. The fixed bushing assembly includes a fixed bearing housing and a bearing apron fixedly disposed relative to the fixed bearing housing. The second position is located at a side of the first position away from the drive portion 50. In FIGS. 2 and 9 to 15, the shaft support 20 is closer to the drive portion 50 when it is in the first position than when it is in the second position.

In an embodiment of the invention, the shaft support 20 is provided with a first stop for defining an extreme position of the blade shaft 42 relative to the drive 50.

In the above arrangement, the first stop defines an extreme position of the blade shaft 42 relative to the drive portion 50 such that when the axle support 20 is in the first position, the first stop can prevent the blade assembly 40 from The drive unit 50 is separated.

Specifically, as shown in FIGS. 7, 9, and 10, in an embodiment of the invention, the axle support 20 includes a circumferential side wall 22 and an end wall 23. The circumferential side wall 22 encloses a shaft hole 21. The end wall 23 is connected to one end of the circumferential side wall 22, and the end wall 23 forms a first stop.

Specifically, the end wall 23 is located at an end of the circumferential side wall 22 remote from the driving portion 50.

With the above arrangement, when the blade shaft 42 is fitted into the shaft hole 21, the end wall 23 can restrict the limit position where the blade shaft 42 moves away from the driving portion 50. The use of the end wall 23 as the first stop has a simple structure and facilitates machining of the shaft support 20.

Of course, in an alternative embodiment of the present invention, a first engaging portion may be disposed on the shaft support member 20, and a second engaging portion that cooperates with the first engaging portion may be disposed on the blade shaft 42. When the first engaging portion is engaged with the second engaging portion, the blade assembly 40 is fixedly disposed with respect to the shaft support 20, and the blade assembly 40 moves together with the shaft support 20. When the first engaging portion is disengaged from the second engaging portion, the blade assembly 40 is movable in the axial direction of the shaft hole 21. When the shaft support 20 and the blade shaft 42 are engaged by the first engaging portion and the second engaging portion, the sleeve assembly may also be disposed at one end of the mounting seat 70 near the driving portion 50, that is, the sleeve assembly and the driving portion. 50 is disposed on the same side of the blade 41, and one end of the blade shaft 42 passes through the shaft support 20 of the sleeve assembly and is coupled to the driving portion 50. The fixed bushing assembly is disposed at an end of the mount 70 that is remote from the drive portion 50.

Thus, when the shaft support 20 is in the first position, the first engaging portion is engaged with the second engaging portion to ensure that the blade assembly 40 is engaged with the driving portion 50, and the driving portion 50 can drive the blade assembly 40. When the blade assembly 40 needs to be disassembled, the shaft support 20 is moved to the second position, at which time the first engaging portion is disengaged from the second engaging portion, so that the blade assembly 40 can be along the axis direction of the shaft hole 21. It moves and is separated from the drive unit 50.

Specifically, the first engaging portion may be an annular groove provided on the inner wall of the shaft hole 21, and the second engaging portion may be an annular protrusion provided on the blade shaft 42.

With the above arrangement, when the first engaging portion and the second engaging portion are engaged, the movement of the blade shaft 42 in the axial direction of the shaft hole 21 can be restricted without affecting the rotation of the blade shaft 42 in the shaft hole 21.

As shown in FIGS. 4 and 6, the axle support 20 further includes a plurality of axial ribs 27 spaced apart from the outer wall of the circumferential side wall 22. The shaft support 20 is interference fit with the base 10 by axial ribs 27.

In the above arrangement, the shaft support 20 is in an interference fit with the base 10 by the axial ribs 27, so that a line contact can be made between the shaft support 20 and the base 10, and the between the shaft support 20 and the base 10 is reduced. Friction. With the above arrangement, the shaft support 20 is easily fitted into the base 10 at the time of assembly as compared with the case where the circumferential side wall 22 is directly in surface contact with the base 10. At the same time, the shaft support 20 is in an interference fit with the base 10, and the friction between the shaft support 20 and the base hole 12 can offset a portion of the force in a direction away from the drive portion 50, avoiding the force from the blade assembly 40. Transmission to the axle support 20 causes the axle support 20 to move from the first position to the second position.

Specifically, the length direction of the axial rib 27 extends parallel to the axis of the shaft hole 21, and the plurality of axial ribs 27 are spaced apart in the circumferential direction of the circumferential side wall 22.

In the embodiment of the invention, the shaft support 20 is made of an elastic material such as rubber.

Thus, the shaft support 20 can not only seal the blade shaft 42 but also easily fit the shaft support 20 that is in an interference fit with the base 10 into the base 10.

As shown in FIG. 6, in the embodiment of the present invention, the circumferential side wall 22 includes a first section 221, a second section 222, and a mating section 223 that are sequentially connected and sequentially increased in outer diameter. The end wall 23 is coupled to an end of the first section 221 that is remote from the second section 222, and the mating section 223 is mated with the base aperture 12. The first section 221, the second section 222, and the inner through holes of the mating section 223 collectively form the shaft hole 21.

In the above arrangement, the outer diameters of the first segment 221, the second segment 222, and the mating segment 223 are sequentially increased, such that the diameters of the first segment 221 and the second segment 222 are smaller than the diameter of the base hole 12, and are easily inserted into the base hole 12 The first segment 221 and the second segment 222 are inserted into the base hole 12 to serve as a guide for facilitating the fitting of the mating segment 223 with the base hole 12 into the base 10.

As shown in FIGS. 3 and 4, in the embodiment of the present invention, the sleeve assembly further includes a switching portion 30 that cooperates with the shaft support 20 for driving the shaft support 20 in the first position and the second position. Switch between. At least a portion of the switching portion 30 extends beyond the base 10 to form an operating portion.

With the above arrangement, the user or the worker can apply the force to the switching portion 30 through the operation portion outside the base 10 through the switching portion 30, and the switching portion 30 is engaged with the shaft support 20, so that the switching portion 30 can drive the shaft during the movement The support member 20 switches position to facilitate installation and removal of the vane assembly 40.

As shown in FIG. 4, in the embodiment of the present invention, the switching portion 30 includes a dial 31, and the base body 11 is provided with a first pad hole 13 communicating with the base hole 12, and the shaft support member 20 has the first The dial hole 13 corresponds to the second dial hole 24 provided. The first end of the dial 31 passes through the first dial hole 13 and is inserted into the second dial hole 24 to connect the switching portion 30 with the shaft support 20, and the second end of the dial 31 protrudes outside the base body 11. To form an operation portion.

The above arrangement is compact, and the user or the staff can operate the second end of the dial 31. Since the first end of the dial 31 passes through the first dial hole 13 and is inserted into the second dial hole 24, When the user or the worker pushes the dial 31, the dial 31 moves the drive shaft support 20.

Optionally, in order to prevent the first end of the dial 31 from coming out of the second pad hole 24, the first end of the paddle 31 may be in an interference fit with the second pad hole 24.

Preferably, as shown in FIGS. 11 and 12, the switching portion 30 further includes a retaining portion 32 that is coupled to the dial 31. As shown in FIG. 12, the shaft support 20 further includes a retaining groove 25 disposed on the wall of the second dial hole 24. When the first dial hole 13 is inserted into the second dial hole 24, the retaining portion 32 is engaged with the retaining groove 25 to prevent the dial 31 from coming out of the second dial hole 24.

By the snap fit of the retaining portion 32 and the retaining groove 25, the dial 31 can be prevented from coming out of the second dial hole 24, thereby improving the reliability of the bushing assembly.

Specifically, as shown in FIG. 12, the retaining portion 32 is coupled to the first end of the dial 31, and the retaining portion is integrally formed with the dial 31. The above arrangement is simple in structure and convenient in processing.

In the embodiment of the present invention, the base 10 further includes a first limiting portion connected to the base body 11 , and the switching portion 30 further has a second limiting portion that cooperates with the first limiting portion to support the shaft supporting member 20 . Locked in the first position or the second position.

With the above arrangement, the first limiting portion and the second limiting portion cooperate to ensure that the shaft support 20 is reliably switched between the first position and the second position.

Specifically, as shown in FIG. 8, the switching portion 30 further includes a positioning plate 33 connected to the dial 31, and the positioning plate 33 is located outside the base body 11. The second limiting portion is a second protrusion 34 disposed on a surface of the positioning plate 33 facing the base body 11. As shown in FIG. 5, the first limiting portion includes a plurality of first protrusions 14 on the outer wall of the base body 11, and the plurality of first protrusions 14 are spaced apart in a direction parallel to the center line of the base body 11. . When the switching portion 30 drives the shaft support 20 to move in the base hole 12, the second protrusion 34 selectively engages with two adjacent ones of the plurality of first protrusions 14 to The shaft support 20 is locked in the first position or the second position.

In the above arrangement, a space for accommodating the second protrusions 34 may be formed between the adjacent two first protrusions 14 to lock the second protrusions 34 in the spaces. Thus, the second protrusion 34 is selectively engaged with the adjacent two of the plurality of first protrusions 14, and the shaft support 20 can be locked in the first position to prevent the shaft support 20 from being locked. The turbulence occurs under the force of the blade shaft 42 to prevent the blade shaft 42 from being separated from the shaft support 20 when the air conditioner is stopped. When the user or the worker pushes the dial 31, the second protrusion 34 can be switched between a plurality of intervals formed by the plurality of first protrusions 14, thereby driving the shaft support 20 in the first position and the second position. Switch between.

More specifically, as shown in FIG. 5, the first limiting portion includes three first projections 14. When the first projection 14 is engaged with the first projection 14 on the right side in FIG. 5 and the first projection 14 located in the middle, the shaft support 20 can be locked in the first position. When the shaft support 20 is in the first position, the positional relationship between the switching portion 30 and the shaft support 20 and the base 10 is as shown in FIG. When the first projection 14 is engaged with the first projection 14 on the left side in FIG. 5 and the first projection 14 located in the middle, the shaft support 20 can be locked in the second position. When the shaft support 20 is in the second position, the positional relationship between the switching portion 30 and the shaft support 20 and the base 10 is as shown in FIG.

In an embodiment of the invention, the base 10 further includes a second stop 15 disposed on the inner wall of the base body 11 for preventing the shaft support 20 from coming out of the base hole 12.

With the above arrangement, the second stopper 15 can prevent the shaft support 20 from coming out of the base hole 12 when the shaft support 20 is moved in the base hole 12 by an external force applied by a user or a worker.

Specifically, as shown in FIGS. 4 and 5, the second stopper portion 15 is a third projection provided at one end of the shaft support 20 away from the blade assembly 40. When the distance that the shaft support 20 moves away from the blade assembly 40 exceeds a predetermined value, the third protrusion abuts the end surface of the second section 222 of the shaft support 20 that is connected to the first section 221 to stop the shaft The support 20 continues to move away from the blade assembly 40, thereby preventing the shaft support 20 from coming out of the base aperture 12.

As shown in FIGS. 4 and 5, the base 10 includes a plurality of third projections spaced apart in the circumferential direction of the base body 11, so that the shaft support 20 can be more reliably prevented from coming out of the base hole 12.

As shown in Fig. 7, in the embodiment of the present invention, the bearing hole 26 is provided in the hole wall of the shaft hole 21. The bushing assembly also includes a bearing 60 disposed in the bearing groove 26 that passes through the bearing bore of the bearing 60 and is slidable relative to the bearing 60.

In the above arrangement, the bearing 60 can function to support the blade shaft 42 to make the rotation of the blade assembly 40 more stable and reliable.

Optionally, the bearing 60 is a self-lubricating bearing.

In an embodiment of the invention, when the axle support 20 of the bushing assembly is in the first position, there is a space between the end face of the blade shaft 42 remote from the drive portion 50 and the end wall 23 of the axle support 20 to allow the wind The leaf shaft 42 is movable in the shaft hole 21.

With the above arrangement, an adjustment interval can be formed between the end surface of the blade shaft 42 remote from the driving portion 50 and the end wall 23 of the shaft support 20, and when the shaft support 20 is in the first position, the blade shaft 42 is in the shaft hole. The 21 can be moved to facilitate adjustment of the axial position of the blade assembly 40 during installation.

As shown in FIGS. 13 to 15, when there is a space between the end surface of the blade shaft 42 remote from the driving portion 50 and the end wall 23 of the shaft support 20, the blade assembly 40 has three states: an operating state, and a stop state. And the state to be disassembled.

When the axle support 20 is in the first position, the air conditioner is in operation, the vane assembly 40 is in an operational state; the air conditioner is off, and the vane assembly 40 is in a stopped state. When the blade assembly 40 is in the working state and the stopped state, the blade assembly 40 is matched with the driving portion 50, which can prevent the air blade assembly 40 from being separated from the driving portion 50 during the operation of the air conditioner, causing the air conditioner to malfunction, or the air conditioner is stopped after the wind is stopped. The separation of the blade assembly 40 from the drive portion 50 causes the blade assembly 40 to be unable to rotate when the air conditioner is activated again. When the axle support 20 is moved to the second position, the blade assembly 40 can be moved away from the driving portion 50 to a position separated from the driving portion 50, at which time the blade assembly 40 is in a state to be disassembled, and the blade assembly 40 can be Disassembled.

Specifically, in order to completely separate the blade assembly 40 from the drive portion 50 so that the air duct assembly can be detached from the outer casing 80, the blade assembly 40 needs to be moved 7 mm to the left side as shown in Figs.

As shown in FIG. 13, when the air conditioner is in operation, the blade assembly 40 is in an operating state, and the second end of the blade shaft 42 is fully engaged with the driving portion 50 to cause the driving portion 50 to reliably drive the blade assembly to rotate. At this time, the interval A between the end surface of the blade shaft 42 remote from the driving portion 50 and the end wall 23 of the shaft support 20 is 5 mm.

As shown in FIG. 14, when the air conditioner is turned off, the driving portion 50 moves by inertia, so that the blade assembly 40 moves to the left side, and the end surface of the blade shaft 42 away from the driving portion 50 abuts against the end wall 23 of the shaft support 20. In this case, there is still a 2 mm mating area between the blade shaft 42 and the driving portion 50. Therefore, when the air conditioner is operated again, the driving portion 50 can still drive the blade assembly 40 to rotate.

When it is necessary to disassemble the blade assembly 40, the push switching portion 30 is moved 2 mm to the left side while the blade assembly 40 is also moved 2 mm to the left side, so that the end face of the blade shaft 42 away from the driving portion 50 and the shaft support 20 The end wall 23 abuts as shown in FIG. At this time, the blade assembly 40 is in a state to be disassembled, the blade shaft 42 is completely separated from the driving portion 50, and the blade assembly 40 can be detached from the casing 80 as a whole with the duct assembly for cleaning and maintenance.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: when the shaft support is in the first position, it can ensure that the blade assembly is in the working state and the stop state in the air conditioner. Cooperating, so as to ensure that the blade assembly can be driven by the driving portion, and the blade assembly is separated from the driving portion by the inertial force when the air conditioner is stopped, and the reliability of the air conditioner operation is good. At the same time, when the shaft support is in the second position, the vane assembly can be separated from the drive portion, which facilitates disassembly of the duct assembly for cleaning.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention. In the meantime, it should be understood that the dimensions of the various parts shown in the drawings are not drawn in the actual scale relationship for the convenience of the description. Techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and apparatus should be considered as part of the authorization specification. In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Accordingly, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

In the description of the present invention, it is to be understood that orientations such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" and the like are indicated. Or the positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, which are not intended to indicate or imply the indicated device or component. It must be constructed and operated in a specific orientation or in a specific orientation, and thus is not to be construed as limiting the scope of the invention; the orientations "inside and outside" refer to the inside and outside of the contour of the components themselves.

For convenience of description, spatially relative terms such as "above", "above", "on top", "above", etc., may be used herein to describe as in the drawings. The spatial positional relationship of one device or feature to other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described. For example, if the device in the figures is inverted, the device described as "above other devices or configurations" or "above other devices or configurations" will be positioned "below other devices or configurations" or "at Under other devices or configurations." Thus, the exemplary term "above" can include both "over" and "under". The device can also be positioned in other different ways (rotated 90 degrees or at other orientations) and the corresponding description of the space used herein is explained accordingly.

It is to be noted that the terminology used herein is for the purpose of describing particular embodiments, and is not intended to limit the exemplary embodiments. As used herein, the singular " " " " " " There are features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A bushing assembly for a blade, characterized in that the bushing assembly comprises:

a base (10), the base (10) includes a base body (11), the base body (11) has a base hole (12);

A shaft support (20) slidably disposed in the base hole (12), the shaft support (20) having a shaft hole (21), and a blade shaft (42) of the blade assembly (40) One end extends into the shaft hole (21) and is rotatably disposed in the shaft hole (21), and the other end of the blade shaft (42) is coupled to a driving portion (50), the shaft support member (20) having a first position and a second position, the blade assembly (40) being drivable by the drive portion (50) when the shaft support (20) is in the first position, the shaft When the support member (20) is in the second position, the vane assembly (40) is movable in the axial direction of the shaft hole (21) and separated from the driving portion (50).
The bushing assembly according to claim 1, wherein the shaft support (20) is provided with a first stop portion for defining the blade shaft (42) The limit position relative to the movement of the drive portion (50).
The bushing assembly of claim 2 wherein said axle support (20) comprises:

a circumferential side wall (22), the circumferential side wall (22) enclosing the shaft hole (21);

An end wall (23) is coupled to one end of the circumferential side wall (22), the end wall (23) forming the first stop.
The bushing assembly according to claim 3, wherein the shaft support (20) further comprises a plurality of axial ribs (27) spaced apart from an outer wall of the circumferential side wall (22) The shaft support (20) is interference-fitted with the base (10) by the axial ribs (27).
The bushing assembly according to claim 3, wherein the circumferential side wall (22) comprises a first section (221), a second section (222), and a mating section that are sequentially connected and sequentially increased in outer diameter (223), the end wall (23) is connected to an end of the first segment (221) remote from the second segment (222), the mating segment (223) and the base hole (12) The inner through holes of the first segment (221), the second segment (222) and the mating segment (223) together form the shaft hole (21).
A bushing assembly according to any one of claims 1 to 5, wherein the bushing assembly further comprises a switching portion (30) cooperating with the shaft support (20), the switching portion ( 30) for driving the shaft support (20) to switch between the first position and the second position, at least a portion of the switching portion (30) extending outside the base (10) To form an operation portion.
The bushing assembly according to claim 6, wherein the switching portion (30) comprises a dial (31), and the base body (11) is provided with the base hole (12) a first dial hole (13), the shaft support (20) has a second dial hole (24) corresponding to the first dial hole (13), the dial (31) a first end is inserted into the second paddle hole (24) through the first paddle hole (13) to connect the switching portion (30) with the shaft support (20), A second end of the dial (31) projects beyond the base body (11) to form the operating portion.
The bushing assembly according to claim 7, wherein the switching portion (30) further comprises a retaining portion (32) coupled to the dial (31), the shaft support (20) further a retaining groove (25) disposed on a wall of the hole of the second paddle hole (24), when the first paddle hole (13) is inserted into the second paddle hole (24), The retaining portion (32) is snap-fitted with the anti-drop groove (25) to prevent the dial (31) from coming out of the second pad hole (24).
The bushing assembly according to claim 6, wherein the base (10) further comprises a first limiting portion connected to the base body (11), the switching portion (30) further having a second limiting portion that cooperates with the first limiting portion to lock the shaft support (20) in the first position or the second position.
The bushing assembly according to claim 9, wherein the switching portion (30) comprises a dial (31) and a positioning plate (33) connected to the dial (31), the positioning plate ( 33) located outside the base body (11), the first limiting portion includes a plurality of first protrusions (14) on an outer wall of the base body (11), the plurality of a protrusion (14) is spaced apart in a direction parallel to a center line of the base body (11), the second limiting portion being disposed on the positioning plate (33) facing the base body ( a second protrusion (34) of the surface of 11), the second protrusion (34) when the switching portion (30) drives the shaft support (20) to move in the base hole (12) Selectively snap-fitting with two of the plurality of first protrusions (14) to lock the shaft support (20) to the first a location or the second location.
A bushing assembly according to any one of claims 1 to 5, wherein the base (10) further comprises a second stop provided on an inner wall of the base body (11) ( 15) The second stop (15) is for preventing the shaft support (20) from coming out of the base hole (12).
The bushing assembly according to any one of claims 1 to 5, characterized in that the hole wall of the shaft hole (21) is provided with a bearing groove (26), and the bushing assembly further comprises a seat A bearing (60) in the bearing groove (26), the vane shaft (42) passing through a bearing bore of the bearing (60) and slidable relative to the bearing (60).
A duct assembly includes a mount (70), a sleeve assembly coupled to the mount (70), and a vane assembly (40) disposed on the sleeve assembly, characterized The bushing assembly is the bushing assembly of any one of claims 1 to 12, the vane assembly (40) being in the shaft hole of the bushing assembly relative to the mounting seat (70) (21) is movably disposed in the axial direction.
The air duct assembly according to claim 13, wherein when the shaft support (20) of the sleeve assembly is in the first position, the blade shaft (42) is remote from the driving portion (50) There is a space between the end face and the end wall (23) of the shaft support (20) to move the blade shaft (42) in the shaft hole (21).
An air conditioner comprising a housing (80) and a duct assembly disposed within the housing (80), wherein the duct assembly is the duct assembly of claim 13.