Air conditioner fan blade bearing and air conditioner

Abstract

The utility model discloses an air conditioner fan blade bearing and an air conditioner in the technical field of air conditioner products. The air conditioner fan blade bearing comprises an inner ring, an outer ring and a steel ball, the inner ring and the outer ring are in a rotary body shape and are coaxial, the steel ball is arranged between the inner ring and the outer ring, grooves are correspondingly formed in the outer side face of the inner ring and the inner side face of the outer ring, the steel ball is rotatably arranged in the grooves, the inner ring and the outer ring are both in contact with the steel ball, and the inner ring and the outer ring are not in direct contact; the outer ring is of an integrally-formed double-layer structure, the inner layer is made of high-rigidity and self-lubricating materials, and the outer layer is made of thermoplastic elastomer materials. According to the bearing, the inner ring and the outer ring are in rolling connection, friction force is reduced, and the abnormal sound risk is smaller; the outer ring is made of two materials, and the production process and the movement balance are both considered; rigid fit of bearing installation is changed into elastic fit, and the requirement for installation precision is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning products, in particular to an air-conditioning fan blade bearing and an air conditioner. Background Art

[0002] In existing air conditioning technology, to reduce vibration and noise during fan shaft rotation, bearings are typically secured with sleeves. In practice, these bearings typically utilize sliding friction. This means that after the fan shaft and bearing are connected, the paired rotation of the bearings can cause slight abnormal noises during operation. Furthermore, existing bearings are rigidly mounted, resulting in poor fault tolerance. Utility Model Content

[0003] In order to overcome the problems of abnormal noise risk and low installation fault tolerance of existing air conditioner fan blade bearings, the utility model provides an air conditioner fan blade bearing and an air conditioner.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The air conditioner fan blade bearing includes an inner ring, an outer ring and steel balls. The inner ring and the outer ring are in the shape of a gyroscopic body and are coaxial. The steel balls are arranged between the inner ring and the outer ring. The outer side surface of the inner ring and the inner side surface of the outer ring are correspondingly provided with grooves. The steel balls are rotatably arranged in the grooves. Both the inner ring and the outer ring are in contact with the steel balls, and there is no direct contact between the inner ring and the outer ring. The outer ring is an integrally molded double-layer structure. The inner layer is made of a high-rigidity and self-lubricating material, and the outer layer is made of a thermoplastic elastomer.

[0006] In this application, the inner ring and the outer ring are connected in a rolling manner, which reduces friction and reduces the risk of abnormal noise; the outer ring is made of two materials, taking into account both production technology and motion balance; the bearing installation is changed from a rigid fit to an elastic fit, which reduces the installation accuracy requirements.

[0007] Furthermore, a plurality of hollow portions are provided in the middle portion of the outer layer of the outer ring, and the plurality of hollow portions are evenly distributed in the circumferential direction outward from the central axis of the outer ring.

[0008] In this embodiment, a hollow portion is added to improve elasticity, facilitate assembly implementation, and increase the fault tolerance of the production process.

[0009] Furthermore, a plurality of protrusions are provided on the outer surface of the outer layer of the outer ring, the extending direction of the protrusions is the same as the extending direction of the central axis of the outer ring, and the plurality of protrusions are evenly distributed in the circumferential direction outward from the central axis of the outer ring.

[0010] In this embodiment, a raised portion is added to help ensure coaxiality during assembly.

[0011] Furthermore, a steel ball retainer is provided for separating adjacent steel balls in the inner ring and the outer ring.

[0012] In this embodiment, a steel ball retainer is added to prevent adjacent steel balls from directly contacting each other, thereby reducing wear and ensuring smooth operation.

[0013] Furthermore, the outer side surface of the inner ring and the inner side surface of the outer ring are both cylindrical surfaces.

[0014] In this embodiment, the outer side surface of the inner ring and the inner side surface of the outer ring are both cylindrical surfaces, which are convenient for processing and conducive to stable fitting.

[0015] Furthermore, dust covers are connected to the end faces of the inner ring and the outer ring.

[0016] In this embodiment, a dust cover is added to protect the interior of the bearing from the intrusion of dust or water vapor.

[0017] The utility model also provides an air conditioner, comprising a fan blade and the air conditioner fan blade bearing of any of the above embodiments, wherein the mounting shaft at the end of the fan blade is tightly fitted with the inner hole of the inner ring.

[0018] The beneficial effects of the utility model are as follows: the inner ring and the outer ring of the bearing are rollingly connected, the friction is reduced, and the risk of abnormal noise is smaller; the outer ring is made of two materials, taking into account both production technology and movement balance; the bearing installation is changed from a rigid fit to an elastic fit, which reduces the installation accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly of the air conditioner fan blade bearing and the fan blade provided by the utility model;

[0020] Figure 2 for Figure 1 Exploded view of the assembly part;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure of the middle and outer circles;

[0022] Figure 4 for Figure 1 Sectional view of the assembled state.

[0023] Marked in the figure are, 1-air conditioner fan blade bearing, 11-inner ring, 12-steel ball, 13-outer ring, 131-inner layer, 132-outer layer, 1321-hollowed part, 1322-raised part, 2-fan blade, 21-mounting shaft. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 intended to limit the present invention.

[0026] like Figures 1-4 As shown, the utility model provides an air conditioner fan blade bearing.

[0027] The air conditioner fan blade bearing 0 includes an inner ring 11, an outer ring 13 and a steel ball 12. The inner ring 11 and the outer ring 13 are in the shape of a gyroid and are coaxial. The steel ball 12 is arranged between the inner ring 11 and the outer ring 13. The outer side surface of the inner ring 11 and the inner side surface of the outer ring 13 are correspondingly provided with grooves. The steel ball 12 is rotatably arranged in the groove. The inner ring 11 and the outer ring 13 are both in contact with the steel ball 12, and the inner ring 11 and the outer ring 13 have no direct contact; the outer ring 13 is an integrally formed double-layer structure, the inner layer 131 is made of a high-rigidity and self-lubricating material, and the outer layer 132 is made of a thermoplastic elastomer material.

[0028] In this application, the inner ring 11 and the outer ring 13 are connected in a rolling manner, the friction is reduced, and the risk of abnormal noise is smaller; the outer ring 13 is made of two materials, taking into account both production technology and movement balance; the bearing installation is changed from a rigid fit to an elastic fit, which reduces the installation accuracy requirements.

[0029] Examples of materials for the inner layer 131 include POM, PEEK, etc.; examples of materials for the outer layer 132 include TPE, TPR, etc.

[0030] Furthermore, a plurality of hollow portions 1321 are provided in the middle of the outer layer 132 of the outer ring 13 , and the plurality of hollow portions 1321 are evenly distributed in the circumferential direction outward from the central axis of the outer ring 13 .

[0031] In this embodiment, the hollow portion 1321 is added to improve the elasticity, facilitate assembly implementation, and increase the error tolerance of the production process.

[0032] Furthermore, a plurality of protrusions 1322 are provided on the outer surface of the outer layer 132 of the outer ring 13. The extending direction of the protrusions 1322 is the same as the extending direction of the central axis of the outer ring 13. The plurality of protrusions 1322 are evenly distributed in the circumferential direction outward from the central axis of the outer ring 13.

[0033] In this embodiment, the protrusion 1322 is additionally provided to help ensure coaxiality during assembly.

[0034] Preferably, the hollow portion 1321 is a through hole that penetrates the outer layer 132 in the thickness direction; preferably, the extension length of the protrusion 1322 is also consistent with the thickness of the outer layer 132.

[0035] Preferably, when the hollow portion 1321 and the protruding portion 1322 are provided simultaneously, the hollow portion 1321 and the protruding portion 1322 are staggered in the circumferential direction.

[0036] Furthermore, a steel ball retainer is provided for separating adjacent steel balls 12 in the inner ring 11 and the outer ring 13 .

[0037] In this embodiment, a steel ball retainer is added to prevent adjacent steel balls 12 from directly contacting each other, thereby reducing wear and ensuring smooth operation.

[0038] Furthermore, the outer side surface of the inner ring 11 and the inner side surface of the outer ring 13 are both cylindrical surfaces.

[0039] In this embodiment, the outer side surface of the inner ring 11 and the inner side surface of the outer ring 13 are both cylindrical surfaces, which are convenient for processing and conducive to stable fitting.

[0040] Furthermore, dust covers are connected to the end faces of the inner ring 11 and the outer ring 13 .

[0041] In this embodiment, a dust cover is added to protect the interior of the bearing from the intrusion of dust or water vapor.

[0042] When the air conditioner fan blade bearing 0 is connected to the fan blade 2, the mounting shaft 21 at the end of the fan blade 2 and the inner hole of the inner ring 11 are tightly fitted.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Air conditioner fan blade bearing, characterized by: The invention comprises an inner ring (11), an outer ring (13) and a steel ball (12), wherein the inner ring (11) and the outer ring (13) are in the shape of a body of revolution and are coaxial, the steel ball (12) is arranged between the inner ring (11) and the outer ring (13), the outer side surface of the inner ring (11) and the inner side surface of the outer ring (13) are respectively provided with grooves, the steel ball (12) is rotatably arranged in the grooves, the inner ring (11) and the outer ring (13) are both in contact with the steel ball (12), and the inner ring (11) and the outer ring (13) have no direct contact; The outer ring (13) is an integrally formed double-layer structure, wherein the inner layer (131) is made of a material with high rigidity and self-lubricating properties, and the outer layer (132) is made of a thermoplastic elastomer material.

2. The air conditioner fan blade bearing according to claim 1, characterized in that: A plurality of hollow portions (1321) are provided in the middle of the outer layer (132) of the outer ring (13), and the plurality of hollow portions (1321) are evenly distributed in the circumferential direction outward from the central axis of the outer ring (13).

3. The air conditioner fan blade bearing according to claim 1, characterized in that: A plurality of protrusions (1322) are provided on the outer surface of the outer layer (132) of the outer ring (13), and the extension direction of the protrusions (1322) is the same as the extension direction of the central axis of the outer ring (13). The plurality of protrusions (1322) are evenly distributed in the circumferential direction outward from the central axis of the outer ring (13).

4. The air conditioner fan blade bearing according to claim 1, characterized in that: A steel ball retainer is also provided for separating adjacent steel balls (12) in the inner ring (11) and the outer ring (13).

5. The air conditioner fan blade bearing according to claim 1, characterized in that: The outer side surface of the inner ring (11) and the inner side surface of the outer ring (13) are both cylindrical surfaces.

6. The air conditioner fan blade bearing according to any one of claims 1 to 5, characterized in that: Dust covers are connected to the end faces of the inner ring (11) and the outer ring (13).

7. An air conditioner comprising a fan blade (2), characterized in that: It also comprises an air conditioner fan blade bearing as described in any one of claims 1 to 6, wherein the mounting shaft (21) at the end of the fan blade (2) and the inner hole of the inner ring (11) are tightly fitted.

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