Air conditioner fan blade and air conditioner

Abstract

The utility model discloses an air conditioner fan blade and an air conditioner in the technical field of air conditioner products. One end of the fan blade assembly is a rotating shaft installation end, an end cover is arranged on the end face of the fan blade assembly, an installation hole is formed in the center of the end cover, and the installation shaft is fixed in the installation hole. One end of the mounting shaft is a rolling matching end, the other end of the mounting shaft is an insertion end, the outer ring sleeves between the rubber sleeve and the rolling matching end, and the steel balls are arranged between the rolling matching end and the outer ring; the insertion end is of a special-shaped shaft structure, the installation holes are arranged correspondingly, the insertion end is fixed to the end cover, and the axis of the installation shaft coincides with the rotating axis of the fan blade assembly. The fan blade assembly is rotationally connected relative to the air conditioner through the mounting shaft, the fan assembly, the outer ring and the rubber sleeve are integrally designed, subsequent assembly links are reduced, and the assembly precision of relative rotation is easily guaranteed; when the fan blades rotate, sliding friction between the shaft and the bearing is changed into rolling friction between the mounting shaft and the outer ring, friction force is reduced, and the abnormal sound risk is small.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner products, and particularly relates to an air conditioner impeller and an air conditioner. Background Art

[0002] The cross-flow fan in the indoor unit of a household air conditioner is cylindrical. One end of the cross-flow fan is provided with a metal bushing and an oil-containing bearing is fixed to the indoor unit, and the other end is provided with a hole for fixing to the motor shaft. Since the cross-flow fan rotates, there is a sliding friction between the metal shaft at one end of the cross-flow fan and the oil-containing bearing, which will generate abnormal noises. Moreover, after years of operation, the oil volume of the oil-containing bearing decreases and the wear increases, resulting in an increase in friction force, the cross-flow fan is unstable, and the risk of abnormal noises increases when it rotates with the oil-containing bearing.

[0003] In the prior art, the end of the cross-flow fan extends out of the mounting shaft, and the mounting shaft and the inner hole of the bearing are tightly fitted to achieve positioning and installation, resulting in a large assembly error. Summary of the Utility Model

[0004] To overcome the problems of a large risk of abnormal noises at the cooperation end between the impeller and the bearing in the existing air conditioner and a large assembly error during assembly, the utility model provides an air conditioner impeller and an air conditioner.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] The air conditioner impeller includes a fan blade assembly, and also includes a rubber sleeve, an outer ring, steel balls and a mounting shaft. One end of the fan blade assembly is the motor mounting end, and the other end is the rotating shaft mounting end. A end cover is provided on the end face of the rotating shaft mounting end, and a mounting hole is opened in the center of the end cover. The mounting shaft is fixed in the mounting hole; one end of the mounting shaft is the rolling cooperation end, and the other end is the insertion end. The outer ring is sleeved between the rubber sleeve and the rolling cooperation end. The steel balls are arranged between the rolling cooperation end and the outer ring. The rolling cooperation end and the outer ring are in a gyroscopic shape and coaxial. A first groove is provided on the outer side surface of the rolling cooperation end, and a second groove is correspondingly provided on the inner side surface of the outer ring. The steel balls are rotatably arranged in the grooves. The rolling cooperation end and the outer ring are both in contact with the steel balls, and the rolling cooperation end and the outer ring have no direct contact; the insertion end is a special-shaped shaft structure, and the mounting hole is correspondingly arranged so that there is no relative rotation between the mounting shaft and the fan blade assembly. The insertion end of the mounting shaft is fixed on the end cover of the fan blade assembly, and the axis of the mounting shaft coincides with the rotation axis of the fan blade assembly.

[0007] In this application, the rotation connection of the fan blade assembly relative to the air conditioner is realized through the mounting shaft. The fan assembly, the outer ring and the rubber sleeve are integrally designed, reducing subsequent assembly links and making it easier to ensure the assembly accuracy of relative rotation; and when the fan blade rotates, the sliding friction between the shaft and the bearing becomes the rolling friction between the mounting shaft and the outer ring, reducing the friction force and the risk of abnormal noises.

[0008] Furthermore, the inner cavity contour of the rubber sleeve is spherical, and the outer contour of the outer ring is correspondingly set to be spherical, and the centers of the two spheres coincide.

[0009] In this embodiment, the outer ring and the rubber sleeve are in spherical fit, and the coaxiality error caused by the assembly error can be offset during assembly.

[0010] Furthermore, the rubber sleeve has an opening on the side facing the fan blade assembly, and the size of the opening is smaller than the diameter of the outer contour of the outer ring.

[0011] In this embodiment, as described above, it is ensured that the outer ring and the rotating shaft will not easily fall out of the rubber sleeve after assembly.

[0012] Furthermore, a steel ball retainer is provided to separate adjacent steel balls in the rolling fit end and the outer ring.

[0013] In this embodiment, the steel ball retainer is added to prevent adjacent steel balls from directly contacting, thereby reducing wear and ensuring smooth operation.

[0014] Furthermore, the outer side surface of the rolling fit end and the inner side surface of the outer ring are both cylindrical surfaces.

[0015] In this embodiment, the outer side surface of the rolling fit end and the inner side surface of the outer ring are both cylindrical surfaces, which are convenient for processing and conducive to stable fit.

[0016] Furthermore, it also includes a baffle. A blocking portion is provided on the insertion end. When the mounting shaft is assembled and connected to the end cover, the blocking portion and the baffle are respectively located on both sides of the end cover to limit the axial movement of the mounting shaft relative to the end cover.

[0017] In this embodiment, based on the fact that the axial movement of the aforementioned mounting shaft and the end cover has been restricted, the axial movement of the mounting shaft is restricted as above to ensure the fixed connection of the mounting shaft relative to the end cover.

[0018] The present utility model also provides an air conditioner, which includes the air-conditioning fan blade in any of the above embodiments, and the motor mounting end of the fan blade assembly is drivingly connected to the motor.

[0019] The beneficial effects of the present utility model are as follows: The rotational connection of the fan blade assembly relative to the air conditioner is realized through the mounting shaft. The fan assembly, the outer ring, and the rubber sleeve are integrally designed, reducing subsequent assembly links and making it easier to ensure the assembly accuracy of relative rotation. Moreover, when the fan blade rotates, the sliding friction between the shaft and the bearing is changed to the rolling friction between the mounting shaft and the outer ring, the frictional force is reduced, and the risk of abnormal noise is small. The outer ring and the rubber sleeve are in spherical fit, and the coaxiality error caused by the assembly error can be offset during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the air-conditioning fan blade provided by the present utility model;

[0021] Figure 2 is Figure 1 exploded view of the installation end of the central rotating shaft;

[0022] Figure 3 is Figure 1 sectional view of the installation end of the central rotating shaft;

[0023] Figure 4 is Figure 2 structural schematic diagram of the installation shaft;

[0024] Figure 5 is Figure 2 structural schematic diagram of the outer ring.

[0025] In the figure, the markings are: 1 - blade assembly, 101 - motor installation end, 102 - rotating shaft installation end, 2 - end cover, 201 - installation hole, 3 - installation shaft, 31 - insertion end, 32 - rolling fit end, 321 - first groove, 33 - limiting platform, 4 - baffle, 5 - steel ball, 6 - outer ring, 601 - outer contour, 602 - second groove, 7 - rubber sleeve, 701 - inner cavity contour, 702 - opening. Specific embodiments

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] As Figures 1-5 shown, the present invention provides an air conditioner blade.

[0029] The air conditioner blade includes a blade assembly 1, and also includes a rubber sleeve 7, an outer ring 6, steel balls 5 and a mounting shaft 3. One end of the blade assembly 1 is a motor mounting end 101, and the other end is a rotating shaft mounting end 102. A end cover 2 is provided on the end face of the rotating shaft mounting end 102. An installation hole 201 is opened in the center of the end cover 2, and the mounting shaft 3 is fixed in the installation hole 201; one end of the mounting shaft 3 is a rolling fit end 32, and the other end is an insertion end 31. The outer ring 6 is sleeved between the rubber sleeve 7 and the rolling fit end 32. The steel balls 5 are arranged between the rolling fit end 32 and the outer ring 6. The rolling fit end 32 and the outer ring 6 are of a gyroscopic shape and are coaxial. A first groove 321 is provided on the outer side surface of the rolling fit end 32, and a second groove 602 is correspondingly provided on the inner side surface of the outer ring 6. The steel balls 5 are rotatably arranged in the grooves. The rolling fit end 32 and the outer ring 6 are both in contact with the steel balls 5, and the rolling fit end 32 and the outer ring 6 have no direct contact; the insertion end 31 is of a special-shaped shaft structure, and the installation hole 201 is correspondingly arranged so that there is no relative rotation between the mounting shaft 3 and the blade assembly 1. The insertion end 31 of the mounting shaft 3 is fixed on the end cover 2 of the blade assembly 1, and the axis direction of the mounting shaft 3 coincides with the rotation axis of the blade assembly 1.

[0030] In this application, the rotation connection of the blade assembly 1 relative to the air conditioner is realized through the mounting shaft 3. The fan assembly, the outer ring 6 and the rubber sleeve 7 are integrally designed, reducing subsequent assembly links and making it easier to ensure the assembly accuracy of relative rotation; and when the blade rotates, the sliding friction between the shaft and the bearing becomes the rolling friction between the mounting shaft 3 and the outer ring 6, the frictional force is reduced, and the risk of abnormal noise is small.

[0031] The special-shaped shaft structure here is to prevent the mounting shaft 3 from rotating relative to the blade assembly 1, and it can be in the form of a flat position cut on a cylinder, a D shape, or a quadrilateral, etc. In this embodiment, the insertion end 31 is of a D-shaped structure, and the installation hole 201 is a D-shaped hole.

[0032] Further, the inner cavity contour 701 of the rubber sleeve 7 is spherical, the outer contour 601 of the outer ring 6 is correspondingly spherical, and the centers of the two coincide.

[0033] In this embodiment, the outer ring 6 and the rubber sleeve 7 are in spherical cooperation, and the coaxiality error caused by the assembly error can be offset during assembly.

[0034] Further, the rubber sleeve 7 has an opening 702 on the side facing the blade assembly 1, and the size of the opening 702 is smaller than the diameter of the outer contour 601 of the outer ring 6.

[0035] In this embodiment, as described above, to ensure that the outer ring 6 and the rotating shaft will not easily come out of the rubber sleeve 7 after assembly.

[0036] A limiting platform 33 is also provided on the side of the insertion end 31 near the rolling fit end 32 for the fitting installation limit of the mounting shaft 3 and the opening 702 of the rubber sleeve 7.

[0037] Further, a steel ball retainer is also provided for separating adjacent steel balls 5 between the rolling fit end 32 and the outer ring 6.

[0038] In this embodiment, a steel ball retainer is added to prevent the adjacent steel balls 5 from directly contacting each other, thereby reducing wear and ensuring smooth operation.

[0039] Further, the outer side surface of the rolling fit end 32 and the inner side surface of the outer ring 6 are both cylindrical surfaces.

[0040] In this embodiment, the outer side surface of the rolling fit end 32 and the inner side surface of the outer ring 6 are both cylindrical surfaces, which is convenient for processing and conducive to stable fitting.

[0041] Further, it further includes a baffle 4. A blocking portion is provided on the insertion end 31. When the mounting shaft 3 is assembled and connected to the end cover 2, the blocking portion and the baffle 4 are respectively located on both sides of the end cover 2 to limit the axial movement of the mounting shaft 3 relative to the end cover 2.

[0042] Obviously, the blocking portion can be an additional structure or an edge region of a special-shaped shaft segment, such as the edge of the D-shaped structure in this embodiment.

[0043] In this embodiment, based on the fact that the axial movement of the aforementioned mounting shaft 3 and the end cover 2 has been restricted, the axial movement of the mounting shaft 3 is restricted as above to ensure the fixed connection of the mounting shaft 3 relative to the end cover 2.

[0044] In specific practice, the motor mounting end 101 of the fan blade assembly 1 is drivingly connected to the motor.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Air conditioner blade, including a blade assembly (1), characterized in that, It also includes a rubber sleeve (7), an outer ring (6), steel balls (5) and a mounting shaft (3). One end of the fan blade assembly (1) is a motor mounting end (101), and the other end is a rotating shaft mounting end (102). A end cover (2) is provided on the end face of the rotating shaft mounting end (102). An installation hole (201) is opened in the center of the end cover (2), and the mounting shaft (3) is fixed in the installation hole (201); One end of the mounting shaft (3) is a rolling fit end (32), and the other end is an insertion end (31). The outer ring (6) is sleeved between the rubber sleeve (7) and the rolling fit end (32). The steel balls (5) are arranged between the rolling fit end (32) and the outer ring (6). The rolling fit end (32) and the outer ring (6) are of a gyroscopic shape and coaxial. A first groove (321) is provided on the outer side surface of the rolling fit end (32), and a second groove (602) is correspondingly provided on the inner side surface of the outer ring (6). The steel balls (5) are rotatably arranged in the grooves. The rolling fit end (32) and the outer ring (6) are both in contact with the steel balls (5), and the rolling fit end (32) and the outer ring (6) are not in direct contact; The insertion end (31) is of a special-shaped shaft structure, and the installation hole (201) is correspondingly arranged so that there is no relative rotation between the mounting shaft (3) and the fan blade assembly (1). The insertion end (31) of the mounting shaft (3) is fixed on the end cover (2) of the fan blade assembly (1) through the installation hole (201), and the axis of the mounting shaft (3) coincides with the rotation axis of the fan blade assembly (1).

2. The air-conditioning airfoil according to claim 1, characterized in that, The inner cavity contour (701) of the rubber sleeve (7) is spherical, and the outer contour (601) of the outer ring (6) is correspondingly spherical, and the centers of the two coincide.

3. The air-conditioning wind blade according to claim 2, wherein, The rubber sleeve (7) has an opening (702) on the side facing the fan blade assembly (1), and the size of the opening (702) is smaller than the diameter of the outer contour (601) of the outer ring (6).

4. The air-conditioning wind blade according to claim 1, characterized in that, A steel ball retainer is also provided for separating adjacent steel balls (5) between the rolling fit end (32) and the outer ring (6).

5. The air-conditioning airfoil according to claim 1, characterized in that, The outer side surface of the rolling fit end (32) and the inner side surface of the outer ring (6) are both cylindrical surfaces.

6. The air-conditioning airfoil according to claim 1, characterized in that, It also includes a baffle (4). A blocking portion is provided on the insertion end (31). When the mounting shaft (3) is assembled and connected to the end cover (2), the blocking portion and the baffle (4) are respectively located on both sides of the end cover (2) to limit the axial movement of the mounting shaft (3) relative to the end cover (2).

7. An air conditioner, characterized in that, It includes the air-conditioning fan blade according to any one of claims 1-6, and the motor mounting end (101) of the fan blade assembly (1) is drivingly connected to the motor.

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