WO2020057220A1

WO2020057220A1 - Fan blade-bearing connecting structure and air conditioner

Info

Publication number: WO2020057220A1
Application number: PCT/CN2019/093749
Authority: WO
Inventors: 张坤鹏; 尚彬; 黄家柏
Original assignee: 宁波奥克斯电气股份有限公司; 奥克斯空调股份有限公司
Priority date: 2018-09-18
Filing date: 2019-06-28
Publication date: 2020-03-26
Also published as: CN109026832A

Abstract

A fan blade-bearing connecting structure, comprising a fan blade connecting shaft. One end of the fan blade connecting shaft is fixedly connected to the end portion of at least one end of the axis direction of a fan blade, the fan blade (1) is matched with the fan blade connecting shaft to rotate synchronously with same, and the form of matching is a polygonal structure; the other end of the fan blade connecting shaft is fixedly connected to a bearing (2), and the bearing (2) rotates synchronously with the blade connecting shaft. Further disclosed is an air conditioner having the fan blade-bearing connecting structure. The fan blade-bearing connecting structure and the air conditioner can enable the joint portion of the fan blade connecting shaft and a fan blade end shaft to be free of relatively rotation, and is high in dust resisting ability, good for reducing noise, convenient to disassemble and assemble, and convenient to clean.

Description

Air blade and bearing connection structure and air conditioner

Technical field

The present disclosure relates to the technical field of air conditioner manufacturing, and in particular, to a connection structure between a blade and a bearing and an air conditioner.

Background technique

The air conditioner is provided with a rotating blade. In order to facilitate the rotation of the blade, the axial end of the blade is usually provided with a circular shaft. In the prior art, the circular shaft is often placed in a circular hole bearing, and the circular shaft and the circular hole bearing Generally it is clearance sliding fit, and lubricating oil is added in the round hole bearing to reduce friction. But after a long time, the lubricating oil is easy to air dry, and after the dust enters between the round shaft and the round hole bearing, the friction will increase, and the air conditioner will generate abnormal noise. And multiple disassembly and assembly, after cleaning the wind blade, the possibility of abnormal noise is greater.

Summary of the Invention

In view of this, the present disclosure aims to propose a connection structure between an air blade and a bearing and an air conditioner, so as to solve the problems that the air blade has a large frictional force for a long time and is prone to abnormal noise.

To achieve the above objective, the technical solution of the present disclosure is implemented as follows:

An embodiment of the present disclosure provides a connection structure between a blade and a bearing, including: a blade connection shaft, one end of which is fixedly connected to an end of at least one end in the axial direction of the blade, and is suitable for matching the blade with the wind The leaves rotate synchronously, and the form of the fit is a polygonal structure; the other end of the blade connecting shaft is fixed with a bearing, and the bearing rotates synchronously with the blade connecting shaft.

In an embodiment, an end of at least one end of the blade in the axial direction is provided with a blade end shaft, the blade connecting shaft includes a function shaft, and a first end of the function shaft is at least partially embedded in the wind The blade end shaft rotates inside synchronously with the blade end shaft.

In an embodiment, an end of the blade end shaft far from the blade is recessed inward along the axis direction to form a polygonal end shaft inner hole.

In an embodiment, the first end of the functional shaft is a polygonal shaft segment that matches the shape of the inner hole of the polygonal end shaft.

In one embodiment, the polygonal shaft section is in clearance fit with the internal hole of the polygonal end shaft.

In one embodiment, the functional axis is a polygonal functional axis, and the entire polygonal functional axis is configured as a polygonal structure.

In an embodiment, the bearing includes an outer sleeve and an inner sleeve, and the inner sleeve can rotate relative to the outer sleeve.

In an embodiment, the inner sleeve is mated with the second end of the functional shaft and rotates synchronously.

In an embodiment, the inner sleeve penetrates along the axial direction to form a circular inner hole, and the second end of the functional shaft is a circular shaft segment matching the shape of the circular inner hole.

In an embodiment, the circular inner hole is in an interference fit with the circular shaft segment.

In an embodiment, an end of the blade end shaft remote from the blade is recessed inward along the axial direction to form a polygon end bore, and a first end of the functional shaft is internal to the polygon end shaft. A polygon shaft segment having a matching shape is provided with an undercut between the circular shaft segment and the polygon shaft segment.

In an embodiment, the inner sleeve is mated with the second end of the polygonal functional shaft and rotates synchronously.

In an embodiment, the inner sleeve penetrates along the rotation axis to form a polygonal inner hole, and the polygon functional shaft matches the shape of the polygonal inner hole.

In one embodiment, the polygonal functional shaft and the polygonal inner hole are clearance fit.

In one embodiment, the fan blade connecting shaft and the bearing are an integrally formed structure.

In an embodiment, the blade connecting shaft includes a polygon end shaft, and the polygon end shaft is located at an end of at least one end of the blade in the axial direction, and is adapted to cooperate with the blade to rotate synchronously with the blade.

In an embodiment, the inner sleeve is mated with the polygon end shaft and rotates synchronously.

In an embodiment, the inner sleeve penetrates along the rotation axis to form a polygonal inner hole, and the polygon end shaft matches the shape of the polygonal inner hole.

In one embodiment, the polygonal end shaft and the polygonal inner hole are clearance fit.

In an embodiment, the axis of the blade connecting shaft coincides with the axis of the blade.

In some embodiments, the bearing is a rolling bearing.

In an embodiment, the bearing includes an outer sleeve and an inner sleeve, the inner sleeve can rotate relative to the outer sleeve, and the bearing is further provided with a bearing adapted to seal a moving area of the bearing. A bearing sealing cap is interposed between the outer sleeve and the inner sleeve.

An embodiment of the present disclosure also provides an air conditioner, which includes any type of connection structure between a blade and a bearing.

Compared with the prior art, the wind blade and bearing connection structure and the air conditioner described in the present disclosure have the following advantages:

(1) By setting the connection form of the blade connecting shaft and the blade to a polygonal structure without relative rotation, a reliable connection is achieved, and the ability to resist dust is strong, avoiding friction caused by excessive dust accumulation for long-term use Noise caused by increased force;

(2) The bearing adopts a rolling bearing. Compared with a traditional blade end shaft and bearing matching form, the rotation method of the present disclosure is changed from sliding to rolling, which reduces friction resistance, improves rotation efficiency, and reduces noise generated by friction; and Clearance fits for easy disassembly and cleaning.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

1 is a front view of a connection structure between a fan and a bearing according to the first embodiment of the present disclosure;

2 is a perspective view of a wind blade according to the first embodiment of the present disclosure;

3 is a perspective view of a bearing according to the first embodiment of the present disclosure;

4 is a front view of a function shaft according to the first embodiment of the present disclosure;

5 is a front view of an assembled state of a connection structure between a blade and a bearing according to Embodiment 1 of the present disclosure;

6 is a front view of a connection structure between a wind blade and a bearing according to the second embodiment of the present disclosure;

7 is a perspective view of a connection structure between a wind blade and a bearing according to the second embodiment of the present disclosure;

8 is a perspective view of an assembled state of a connection structure between a blade and a bearing according to Embodiment 2 of the present disclosure;

9 is a perspective view of a connection structure between a wind blade and a bearing according to the third embodiment of the present disclosure;

FIG. 10 is a front view of an assembled state of a connection structure between a blade and a bearing according to Embodiment 3 of the present disclosure; FIG.

11 is a perspective view of a bearing according to

Embodiments

2 and 3 of the present disclosure;

12 is a perspective view 1 of an integrated bearing according to a fourth embodiment of the present disclosure;

13 is a second perspective view of an integrated bearing according to a fourth embodiment of the present disclosure;

FIG. 14 is a front view of a bearing sealing cover according to the present disclosure.

Reference sign description:

1-Fan leaves; 2-bearings; 3-bearings; 3-functional axes;

4- wind blade end shaft; 5-outer sleeve; 6-inner sleeve;

7-circular inner hole; 8-circular shaft section; 9-polygonal shaft section;

10-retracting groove; 11-polygonal function axis; 12-polygonal end axis;

13-polygonal end shaft inner hole; 14-integral inner sleeve; 15-first shaft segment;

16-Second shaft segment; 17-Polygonal inner hole; 18-bearing seal cover.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

The disclosure will be described in detail below with reference to the drawings and embodiments.

Example one

The present disclosure provides a connection structure between an air blade and a bearing. As shown in FIGS. 1-4, the connection structure between the air blade and the bearing includes:

The wind blade end shaft 4 is located at an end of at least one end in the axial direction of the wind blade 1, and the wind blade end shaft 4 is adapted to rotate synchronously with the wind blade 1;

A functional shaft 3, the first end of the functional shaft 3 being at least partially embedded inside the wind blade end shaft 4 and rotating synchronously with the wind blade end shaft 4; and

The bearing 2, the inner sleeve 6 of the bearing 2 and the second end of the functional shaft 3 are plug-fitted and rotate synchronously.

The air blade end shaft 4, the functional shaft 3, and the bearing 2 are sequentially connected, so that the air blade end shaft 4, the functional shaft 3, and the inner sleeve 6 are synchronously rotated.

In an embodiment, the axis of the blade end shaft 4 coincides with the axis of the blade 1.

In an embodiment, as shown in FIG. 2, an end of the wind blade end shaft 4 remote from the wind blade 1 is recessed inward along the axial direction, thereby forming a polygon end shaft inner hole 13.

In an embodiment, as shown in FIG. 4, the first end of the functional shaft 3 is a polygonal shaft section 9; the polygonal shaft section 9 fits with the polygonal end shaft inner hole 13 of the blade end shaft 4. The polygonal shaft segment 9 is embedded in the polygonal end shaft inner hole 13, so that the functional shaft 3 and the wind blade end shaft 4 rotate synchronously.

In an embodiment, the shape of the polygonal shaft segment 9 matches the shape of the polygonal end shaft inner hole 13, and the polygonal form of the polygonal shaft segment 9 may be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like;

The polygonal form of the polygonal end shaft inner hole 13 that matches the polygonal shaft segment 9 may also be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like.

In an embodiment, the polygonal shaft section 9 is a hexagonal structure, and the polygonal end shaft inner hole 13 is a hexagonal hole.

In an embodiment, as shown in FIGS. 3 and 4, the inner sleeve 6 includes a circular inner hole 7. The circular inner hole 7 is formed by the inner sleeve 6 penetrating in the axial direction. The second end of the functional shaft 3 is a round shaft section 8 that matches the shape of the round inner hole 7; the round inner hole 7 and the round shaft section 8 are interference fit, so that the round shaft The segment 8 rotates synchronously with the inner sleeve 6.

As shown in FIG. 3, the bearing 2 further includes an outer sleeve 5. When the outer sleeve 5 is in a fixed state, the inner sleeve 6 can be relatively rotated relative to the outer sleeve 5, thereby making the The circular shaft segment 8 and the inner sleeve 6 can maintain a stable synchronous rotation state;

In an embodiment, the bearing 2 is a rolling bearing. The rolling bearing may be a deep groove ball bearing, a needle bearing, an angular contact bearing, a self-aligning ball bearing, a self-aligning roller bearing, a thrust ball bearing, and a thrust self-aligning roller. Sub-bearings, cylindrical roller bearings, tapered roller bearings, spherical bearings with seats, etc.

An undercut groove 10 is provided between the circular shaft segment 8 and the polygon shaft segment 9; the undercut groove 10 is disposed between the circular shaft segment 8 and the polygon shaft segment 9 to facilitate the function Machining of shaft 3.

The fan blade and bearing connection structure provided in the present disclosure is provided with one additional functional shaft 3 between the fan blade end shaft 4 and the bearing 2; as shown in FIG. 5, the function shaft 3 passes through the circle of the functional shaft 3. The shaft section 8 is in an interference fit connection with the circular inner hole 7 of the inner sleeve 6, and the polygonal shaft section 9 of the functional shaft 3 and the polygonal end shaft inner hole of the blade end shaft 4 13 The clearance fits to achieve a reliable connection between the blade end shaft 4 and the bearing 2. When the blade 1 rotates, the blade end shaft 4 rotates synchronously because the polygonal end shaft inner hole 13 and the The polygonal shaft segment 9 fits, and its mating part is a polygonal structure without relative movement, so there is no relative movement between the two; the round shaft segment 8 and the inner sleeve 6 are interference fit, so that the functional shaft 3 has no relative movement with the inner sleeve 6 of the bearing 2.

The polygonal shaft section 9 of the functional shaft 3 and the polygonal end shaft inner hole 13 of the wind blade end shaft 4 fit in a clearance, without relative rotation, and have a strong ability to resist dust, even if dust enters the polygonal shaft The gap between the segment 9 and the polygonal end shaft inner hole 13 will not cause noise due to the increase in friction between the functional shaft 3 and the wind blade end shaft 4; avoiding excessive dust accumulation due to long-term use, resulting in The noise caused by the increased friction force; and the clearance fit is convenient for disassembly and cleaning.

The bearing 2 of the present disclosure adopts a rolling bearing. Compared with the traditional fan blade end shaft and bearing matching form, the rotation method of the present disclosure is changed from sliding to rolling, which reduces friction resistance, improves rotation efficiency, and reduces friction. noise.

Further, as shown in FIG. 14, a bearing seal cover 18 is provided on the bearing 2, and the bearing seal cover 18 is interposed between the outer sleeve 5 and the inner sleeve 6 for sealing the The moving area of the bearing 2 further makes the bearing 2 a sealed bearing, prevents dust from entering the bearing 2 and reduces the generation of noise, makes the lubricant in the bearing 2 use longer, avoids frequent refueling, and improves use life.

Example two

The second embodiment provides a connection structure between a wind blade and a bearing. The difference from the first embodiment is that, as shown in FIGS. 6-8 and 11, as another implementation form of the present disclosure, the wind blade and the bearing The bearing connection structure is not provided with the blade end shaft 4 and the functional shaft 3 described in the first embodiment. The specific structural form is as follows. The blade and bearing connection structure includes:

A polygonal end shaft 12, which is located at an end of at least one end in the axial direction of the blade 1 and is adapted to rotate with the blade 1; and

The bearing 2 includes a polygonal inner hole 17 matched with the shape of the polygonal end shaft 12, and the polygonal inner hole 17 is suitable for clearance fit and synchronous rotation with the polygonal end shaft 12.

In an embodiment, the mating fit between the polygonal inner hole 17 and the polygon end shaft 12 is specifically a clearance fit.

As shown in FIG. 6-8, the polygon end shaft 12 is configured as a shaft segment extending along the axis direction of the blade 1, and the polygon end shaft 12 forms a polygonal structure around its own axis.

As shown in FIG. 11, the bearing 2 includes an outer sleeve 5 and an inner sleeve 6. The inner sleeve 6 can rotate relative to the outer sleeve 5. The polygonal inner hole 17 is covered by the inner sleeve. The cylinder 6 is penetrated along the rotation axis; the polygonal end shaft 12 is mated with the polygonal inner hole 17 so that the polygonal end shaft 12 and the inner sleeve 6 of the bearing 2 are rotated in synchronization. ;

In an embodiment, the shape of the polygonal end shaft 12 matches the shape of the polygonal inner hole 17, and the polygonal form of the polygonal end shaft 12 may be triangle, square, rectangle, pentagon, hexagon, etc .;

The polygonal form of the polygonal inner hole 17 matching the polygonal end shaft 12 may also be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like.

In an embodiment, the axis of the polygon end shaft 12 coincides with the axis of the wind blade 1;

The wind blade and bearing connection structure provided by the present disclosure achieves a reliable connection between the polygon end shaft 12 and the bearing 2 through the clearance fit between the polygon end shaft 12 and the polygon inner hole 17; the polygon end shaft 12 and the bearing 2 The polygonal inner hole 17 cooperates, and its mating part is a polygonal structure without relative movement, so there is no relative movement between the two; when the wind blade 1 rotates, the polygonal end shaft 12 rotates synchronously, and further the The inner sleeve 6 rotates synchronously with the wind blade 1;

The polygon end shaft 12 is matched with the polygon inner hole 17 in a gap, without relative rotation, and has a strong ability to resist dust. Even if dust enters the gap between the polygon end shaft 12 and the polygon inner hole 17, it will not Noise is generated by increasing the friction between the polygonal end shaft 12 and the polygonal inner hole 17; and the clearance fit is convenient for disassembly and assembly and cleaning.

Example three

The third embodiment provides a connection structure between a blade and a bearing. The difference from the first embodiment is that, as shown in FIGS. 9-11, as another implementation form of the present disclosure, the connection structure between the blade and a bearing is described. Different from the functional shaft 3 described in the first embodiment, the structure connected between the blade end shaft 4 and the bearing 2 in this embodiment is a polygonal functional shaft, and the entire polygonal functional shaft 11 is configured as a polygonal structure. The structural form is as follows, the connection structure between the wind blade and the bearing includes:

The wind blade end shaft 4 is located at an end of at least one end in the axial direction of the wind blade 1, and the wind blade end shaft 4 is adapted to cooperate with the rotation of the wind blade 1;

A polygonal functional shaft 11 which is at least partially embedded inside the blade end shaft 4 and rotates synchronously with the blade end shaft 4; and

The bearing 2 includes a polygonal inner hole 17 matched with the shape of the polygonal functional shaft 11, and the polygonal inner hole 17 is suitable for clearance fit and synchronous rotation with the polygonal functional shaft 11.

As shown in FIG. 11, the bearing 2 includes an outer sleeve 5 and an inner sleeve 6. The inner sleeve 6 can rotate relative to the outer sleeve 5. The polygonal inner hole 17 is covered by the inner sleeve. The cylinder 6 is penetrated along the rotation axis; the polygonal functional shaft 11 is mated with the polygonal inner hole 17, so that the polygonal functional shaft 11 and the inner sleeve 6 of the bearing 2 are rotated in synchronization with each other. .

In an embodiment, the axis of the blade end shaft 4 coincides with the axis of the blade 1;

In an embodiment, as shown in FIG. 9, an end of the wind blade end shaft 4 remote from the wind blade 1 is recessed inward along the axial direction, thereby forming a polygon end shaft inner hole 13.

As shown in FIGS. 9-11, the entire polygonal functional shaft 11 is configured as a polygonal structure, and the first end of the polygonal functional shaft 11 is mated with the polygonal end shaft inner hole 13 of the blade end shaft 4; The second end of the polygonal functional shaft 11 is mated with the polygonal inner hole 17; in one embodiment, the polygonal functional shaft 11 and the polygonal end shaft inner hole 13 are clearance fit, the polygonal functional shaft 11 is in clearance fit with the polygonal inner hole 17. As a result, the blade end shaft 4, the polygon functional shaft 11, and the inner sleeve 6 are sequentially connected and rotated synchronously.

In one embodiment, the shape of the polygonal functional shaft 11 matches the shape of the inner end hole 13 of the polygonal end shaft. The polygonal form of the polygonal functional shaft 11 may be triangle, square, rectangle, pentagon, hexagon, etc .; and The polygonal form of the polygonal end shaft inner hole 13 matching the polygonal functional shaft 11 may also be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like.

The wind blade and bearing connection structure provided in the present disclosure is provided with the polygon functional shaft 11 between the wind blade end shaft 4 and the bearing 2; the polygon functional shaft 11 and the polygon end shaft inner hole 13 are added. The fitting form of the polygonal function shaft is a polygon structure without relative rotation, and the fitting form of the polygon functional shaft 11 and the polygonal inner hole 17 is also a polygon structure without relative rotation. Therefore, the first One end is connected with the polygonal end shaft inner hole 13 of the blade end shaft 4 with a clearance fit connection, and the second end of the polygonal functional shaft 11 is connected with the polygonal inner hole 17 with a clearance fit to achieve the blade end shaft 4 Reliable connection with the bearing 2.

The polygonal functional shaft 11 and the polygonal end shaft inner hole 13 of the wind blade end shaft 4 have a clearance fit, no relative rotation, and strong resistance to dust, even if dust enters the polygonal functional shaft 11 and the polygon In the gap of the end shaft inner hole 13, no noise will be generated due to the increase in friction between the polygonal functional shaft 11 and the wind blade end shaft 4.

The air blade end shaft 4 and the inner sleeve 6 are clearance-fitted with the polygonal functional shaft 11 to facilitate disassembly, cleaning, and replacement.

Embodiment 4

The fourth embodiment provides a connection structure between a blade and a bearing. The difference from the first embodiment is that, as shown in FIGS. 12 and 13, as another implementation form of the present disclosure, the connection structure between the blade and a bearing is described. The functional shaft 3 according to the first embodiment is not provided. The specific structural form is as follows. The connection structure between the blade and the bearing includes:

The bearing 2 includes an integrated inner sleeve 14 and a first shaft segment 15 extending from one end surface of the integrated inner sleeve 14 in the axial direction; the first shaft segment 15 is a polygonal structure, and the first The shaft section 15 is at least partially embedded in the blade end shaft 4 and rotates synchronously with the blade end shaft 4;

The integrated inner sleeve 14 is integrally formed with the first shaft segment 15;

The integrated inner sleeve 14 is configured as a disc-shaped structure;

The bearing 2 further includes an outer sleeve 5 configured as a circular ring structure, and the integrated inner sleeve 14 is located inside the outer sleeve 5 in the radial direction. The integrated type The inner sleeve 14 can rotate relative to the outer sleeve 5;

In one embodiment, the integrated inner sleeve 14 and the outer sleeve 5 can rotate relative to each other about the same axis.

In this embodiment, as in the first embodiment, an end of the wind blade end shaft 4 far from the wind blade 1 is recessed inward along the axis direction, thereby forming a polygon end shaft inner hole 13;

As shown in FIGS. 12-13, the first shaft segment 15 of the bearing 2 and the polygonal end shaft inner hole 13 of the blade end shaft 4 are fitted with a clearance, and the first shaft segment 15 is embedded in the polygon end The shaft inner hole 13 further rotates the integrated inner sleeve 14 of the bearing 2 and the blade end shaft 4 synchronously;

In an embodiment, the shape of the first shaft segment 15 matches the shape of the polygonal end shaft inner hole 13. The polygonal form of the first shaft segment 15 may be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like. ;

The polygonal form of the polygonal end shaft inner hole 13 that matches the first shaft segment 15 may also be a triangle, a square, a rectangle, a pentagon, a hexagon, or the like.

The wind blade and bearing connection structure provided in the present disclosure extends the first shaft segment 15 at the end of the integrated inner sleeve 14 at the two points of the bearing, and the first shaft segment 15 and the polygon end shaft The fitting form of the inner hole 13 is a polygon structure that does not have relative rotation. Therefore, the first shaft segment 15 and the polygonal end shaft inner hole 13 of the blade end shaft 4 are connected through a gap to achieve the blade end. A reliable connection between the shaft 4 and the bearing 2;

When the wind blade 1 rotates, the wind blade end shaft 4 rotates synchronously, so that the wind blade end shaft 4 and the bearing 2 move synchronously.

The first shaft segment 15 and the polygonal end shaft inner hole 13 of the wind blade end shaft 4 have a clearance fit, without relative rotation, and have a strong ability to resist dust, even if dust enters the first shaft segment 15 and the In the clearance fitted with the polygonal end shaft inner hole 13, noise will not be generated due to the increase in friction between the first shaft segment 15 and the blade end shaft 4; and the clearance fit is convenient for disassembly, cleaning, and convenience. replace.

Further, as shown in FIG. 14, a bearing seal cover 18 is provided on the bearing 2, and the bearing seal cover 18 is interposed between the outer sleeve 5 and the integrated inner sleeve 14 for sealing. The moving area of the bearing 2 further makes the bearing 2 a sealed bearing to prevent dust from entering the inside of the bearing 2 and reduce the generation of noise, so that the lubricating oil in the bearing 2 can be used longer and avoid frequent refueling. Increase service life.

The integral inner sleeve 14 and the first shaft segment 15 are integrally formed, which can reduce the number of parts and components of the connection structure between the wind blade and the bearing, reduce the fitting relationship, and then reduce the connection parts that generate noise; It is directly connected with the wind blade end shaft 4 and the connection form is a polygonal clearance fit to ensure the stability of the connection and reduce the production cost.

In an embodiment, the integrated inner sleeve 14 is further provided with a second shaft segment 16, and an end surface of one end of the integrated inner sleeve 14 firstly extends out of the second shaft segment 16 in the axial direction. Further extending out of the first shaft segment 15;

That is, along the same axis direction, the integrated inner sleeve 14, the second shaft section 16, and the first shaft section 15 are sequentially disposed;

The integrated inner sleeve 14, the second shaft section 16, and the first shaft section 15 are integrally formed;

The second shaft segment 16 is provided in the form of a round shaft, which is interposed between the integrated inner sleeve 14 and the first shaft segment 15 and directly engages the integrated inner sleeve 14. The second shaft segment 16 is in the form of a round shaft, which is convenient for processing, and avoids processing difficulties caused by the direct joint between the integrated inner sleeve 14 and the first shaft segment 15 in the form of a polygon.

The above are merely preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure shall be included in the present disclosure. Within the scope of protection.

Unless there are technical obstacles or contradictions, the above-mentioned various embodiments of the present disclosure can be freely combined to form further embodiments, and these additional embodiments are all within the protection scope of the present disclosure.

Although the present disclosure has been described with reference to the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate preferred embodiments of the present disclosure, and should not be construed as a limitation to the present disclosure. The dimensional ratios in the drawings are only schematic and should not be construed as limiting the present disclosure.

Although some embodiments of the present general disclosure have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the present general disclosure. The scope is defined by the claims and their equivalents.

Claims

A wind blade and bearing connection structure is characterized in that it includes:

One end of the wind blade connecting shaft is fixedly connected to the end of at least one end in the axial direction of the wind blade, which is suitable for cooperating with the wind blade to rotate synchronously with the wind blade, and the form of cooperation is a polygonal structure; A bearing is fixed at the other end of the bearing, and the bearing rotates synchronously with the blade connecting shaft.
The connection structure between the blade and the bearing according to claim 1, wherein at least one end of the blade in the axial direction is provided with a blade end shaft (4), and the blade connection shaft includes a functional shaft ( 3), the first end of the functional shaft (3) is at least partially embedded inside the wind blade end shaft (4), and rotates synchronously with the wind blade end shaft (4).
The connection structure between the blade and the bearing according to claim 2, characterized in that an end of the blade end shaft (4) far from the blade (1) is recessed inward along the axial direction to form a polygonal end shaft inner hole (13).
The connection structure between the blade and the bearing according to claim 3, wherein the first end of the functional shaft (3) is a polygonal shaft segment (9) that matches the shape of the polygonal end shaft inner hole (13). ).
The connection structure between the wind blade and the bearing according to claim 4, characterized in that the polygonal shaft section (9) and the polygonal end shaft inner hole (13) are fitted with a clearance.
The wind blade and bearing connection structure according to any one of claims 2-5, wherein the functional shaft (3) is a polygonal functional shaft (11), and the entire polygonal functional shaft (11) is configured as Polygonal structure.
The wind blade and bearing connection structure according to any one of claims 2-5, wherein the bearing (2) comprises an outer sleeve (5) and an inner sleeve (6), and the inner sleeve (6) Relative rotation with the outer sleeve (5) is possible.
The connection structure between the wind blade and the bearing according to claim 7, wherein the inner sleeve (6) is mated with the second end of the functional shaft (3) and rotates synchronously.
The connection structure between the blade and the bearing according to claim 8, characterized in that the inner sleeve (6) penetrates in the axial direction to form a circular inner hole (7), and the second end of the functional shaft (3) It is a round shaft segment (8) matching the shape of the circular inner hole (7).
The connection structure between the blade and the bearing according to claim 9, characterized in that the circular inner hole (7) and the circular shaft section (8) are in interference fit.
The connection structure between the blade and the bearing according to claim 9 or 10, characterized in that an end of the blade end shaft (4) far from the blade (1) is recessed inward along the axial direction to form a polygon end shaft An inner hole (13), the first end of the functional shaft (3) is a polygonal shaft segment (9) that matches the shape of the polygonal end shaft inner hole (13), and the round shaft segment (8) is connected to the An undercut (10) is provided between the polygonal shaft segments (9).
The connection structure between the blade and the bearing according to claim 6, wherein the bearing (2) comprises an outer sleeve (5) and an inner sleeve (6), and the inner sleeve (6) can communicate with The outer sleeve (5) is relatively rotated.
The connection structure between the blade and the bearing according to claim 12, wherein the inner sleeve (6) is mated with the second end of the polygonal functional shaft (11) and rotates synchronously.
The connection structure between the blade and the bearing according to claim 13, wherein the inner sleeve (6) penetrates along the rotation axis to form a polygonal inner hole (17), and the polygonal functional shaft (11) and the polygon The shape of the inner hole (17) matches.
The connection structure between the wind blade and the bearing according to claim 14, wherein the polygonal functional shaft (11) and the polygonal inner hole (17) are fitted with a clearance.
The connection structure between the blade and the bearing according to any one of claims 1 to 15, wherein the blade connection shaft and the bearing are an integrally formed structure.
The connection structure between the blade and the bearing according to claim 1, wherein the blade connecting shaft comprises a polygon end shaft (12), and the polygon end shaft (12) is located at at least one end in the axial direction of the blade (1) The end portion is adapted to cooperate with the wind blade (1) to rotate synchronously with the wind blade (1).
The connection structure between the blade and the bearing according to claim 17, wherein the bearing (2) comprises an outer sleeve (5) and an inner sleeve (6), and the inner sleeve (6) can communicate with all The outer sleeve (5) is relatively rotated.
The connection structure between the wind blade and the bearing according to claim 18, wherein the inner sleeve (6) is mated with the polygon end shaft (12) and rotates synchronously.
The connection structure between the blade and the bearing according to claim 19, wherein the inner sleeve (6) penetrates along the rotation axis to form a polygonal inner hole (17), and the polygon end shaft (12) and the polygon The shape of the inner hole (17) matches.
The connection structure between the wind blade and the bearing according to claim 20, wherein the polygonal end shaft (12) and the polygonal inner hole (17) are fitted with a clearance.
The connection structure between the blade and the bearing according to any one of claims 1 to 21, wherein the axis of the blade connecting shaft coincides with the axis of the blade.
The connection structure between the blade and the bearing according to any one of claims 1 to 22, wherein the bearing is a rolling bearing.
The wind blade and bearing connection structure according to any one of claims 1-23, wherein the bearing (2) comprises an outer sleeve (5) and an inner sleeve (6), and the inner sleeve (6) It can rotate relative to the outer sleeve (5), and the bearing (2) is further provided with a bearing sealing cover (18) adapted to seal the moving area of the bearing (2), the bearing seal A cover (18) is interposed between the outer sleeve (5) and the inner sleeve (6).
An air conditioner, characterized in that the air conditioner comprises the wind blade and bearing connection structure according to any one of claims 1-24.