CN114183393A - Bearing assembly, air supply device and air conditioner - Google Patents

Bearing assembly, air supply device and air conditioner Download PDF

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Publication number
CN114183393A
CN114183393A CN202111439333.0A CN202111439333A CN114183393A CN 114183393 A CN114183393 A CN 114183393A CN 202111439333 A CN202111439333 A CN 202111439333A CN 114183393 A CN114183393 A CN 114183393A
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CN
China
Prior art keywords
bearing
rotating
rotating shaft
shaft
bearing assembly
Prior art date
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Granted
Application number
CN202111439333.0A
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Chinese (zh)
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CN114183393B (en
Inventor
陈振明
越飞
李明泽
江世恒
肖庆
张敏雄
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202111439333.0A priority Critical patent/CN114183393B/en
Publication of CN114183393A publication Critical patent/CN114183393A/en
Application granted granted Critical
Publication of CN114183393B publication Critical patent/CN114183393B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/051—Axial thrust balancing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/0563—Bearings cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The invention provides a bearing assembly, an air supply device and an air conditioner, wherein the bearing assembly comprises a bearing seat, a plurality of rotating shafts, a plurality of bearings and a mounting part, wherein the bearing seat is provided with a mounting cavity; the rotating shafts are sequentially nested along the radial direction of the rotating shafts, and any two adjacent rotating shafts can be relatively rotatably arranged; the first ends of the rotating shafts are used for being connected with the rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the mounting cavity; the bearings are sleeved on the rotating shafts in a one-to-one correspondence mode, and the outer wall surface of each bearing is connected with the bearing seat; the bearing seat and the mounting part are respectively arranged at two ends of the rotating body along the direction of the rotating axis of the rotating body, and the mounting part is rotationally connected with the rotating body positioned at the outer side in the plurality of rotating bodies. The bearing assembly of the application can solve the problem that a bearing seat in the prior art can not provide support for two rotating bodies simultaneously.

Description

Bearing assembly, air supply device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a bearing assembly, an air supply device and an air conditioner.
Background
When the existing wall-mounted air conditioner works, the fan rotates to enable air to flow into or out of the air conditioner, and indoor air circulation flow is formed.
A cross-flow fan for air conditioner features that its rotary axle has two ends, one end is fixed to the axle of drive motor and the other end is connected to the bearing seat fixed to machine frame.
In the prior art, a fan shell is usually fixed, and an air inlet and an air outlet included in the fan shell are static and do not change in direction, so that the fan shell cannot directly change the air supply direction, and an air deflector is additionally arranged.
The existing bearing seat can only provide shaft end support for one rotating body (fan blade), but cannot provide shaft end support for a fan shell needing independent rotation, namely the bearing seat in the prior art cannot provide shaft end support for two rotating bodies simultaneously.
Disclosure of Invention
The invention mainly aims to provide a bearing assembly, an air supply device and an air conditioner, which aim to solve the problem that the bearing assembly in the prior art cannot simultaneously support two rotating bodies.
In order to achieve the above object, according to one aspect of the present invention, there is provided a bearing assembly including: the bearing seat is provided with a mounting cavity; the rotating shafts are sequentially nested along the radial direction of the rotating shafts, and any two adjacent rotating shafts can be arranged in a relatively rotating manner; the first ends of the rotating shafts are used for being connected with the rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the mounting cavity; the bearings are sleeved on the rotating shafts in a one-to-one correspondence mode, and the outer wall surface of each bearing is connected with the bearing seat; and the mounting component is arranged at two ends of the rotating body respectively along the direction of the rotating axis of the rotating body, and is in rotating connection with the rotating body positioned at the outer side in the plurality of rotating bodies.
Furthermore, in any two adjacent rotating shafts, the rotating shaft positioned on the outer side is a hollow shaft, the rotating shaft positioned on the inner side penetrates through the hollow cavity of the rotating shaft positioned on the outer side, and the rotating shaft positioned on the inner side and the rotating shaft positioned on the outer side are arranged at intervals.
Furthermore, the plurality of rotating shafts comprise a second rotating shaft and a first rotating shaft sleeved on the outer side of the second rotating shaft; the plurality of rotating bodies comprise a first rotating body and a second rotating body positioned in the accommodating cavity of the first rotating body, the first end of the first rotating shaft is used for being connected with the first rotating body, and the first end of the second rotating shaft is used for being connected with the second rotating body; the plurality of bearings comprise a first bearing and a second bearing, and the first bearing and the second bearing are sleeved on the first rotating shaft and the second rotating shaft respectively.
Furthermore, the inner wall surface of the mounting cavity is convexly provided with a limiting part, the outer wall surface of the first bearing is provided with a limiting groove, and the limiting part is clamped in the limiting groove, so that the first bearing and the bearing seat are relatively fixed in the axial direction of the first rotating shaft.
Furthermore, two ends of the first bearing are respectively a first end and a second end, and the limiting groove is provided with a first end and a second end from the first end to the second end of the first bearing; the bearing assembly further comprises a support component arranged in the mounting cavity, and when the first bearing is located at a preset mounting position in the mounting cavity, the second end of the first bearing is abutted to the support component; the first end of spacing groove extends to the first terminal surface of first bearing, and the lateral wall of the second end of spacing groove is used for with spacing portion butt.
Furthermore, the outer wall surface of the first bearing is provided with strip-shaped abdicating grooves, and the abdicating grooves and the limiting grooves are distributed along the circumferential direction of the first bearing; the two ends of the abdicating groove respectively extend to the two end faces of the first bearing, so that when the first bearing is installed in the installation cavity, the limiting part is positioned in the abdicating groove and the first bearing can slide relative to the limiting part.
Furthermore, the abdicating groove and the limiting groove are arranged at intervals; the supporting component is arranged in a telescopic mode along the axial direction of the first bearing, and the first bearing is located on one side, close to the supporting component, of the limiting part by enabling the first bearing to be compressed; and the first bearing is rotated to enable the limiting groove and the limiting part to be oppositely arranged, and then when the first bearing moves to the preset installation position, the limiting part is positioned in the limiting groove.
Further, the support member includes: the supporting piece is fixedly arranged; the elastic piece is clamped between the supporting piece and the first bearing.
Furthermore, a first thrust part is convexly arranged on the inner wall surface of the first bearing, is arranged on one side of the first rotating shaft, which is far away from the first rotating body, and is in limit abutting joint with a second end of the first rotating shaft; or the outer wall surface of the first rotating shaft is convexly provided with a second thrust part, and the second thrust part is arranged on one side, close to the first rotating body, of the first bearing and is abutted against the end surface of the first bearing.
Further, the bearing assembly further comprises: the bearing sleeve is arranged in the mounting cavity and sleeved outside the second bearing; the bearing sleeve is positioned on one side of the first bearing along the axial direction of the first bearing and is abutted against the first bearing; the stopping part is arranged on the inner wall surface of the mounting cavity in a protruding mode and located on one side, far away from the first bearing, of the bearing sleeve, and the stopping part is used for being in limit abutting connection with the bearing sleeve.
Further, the mounting member includes: a bearing bracket; a rotating shaft connected to an outer one of the plurality of rotating bodies; and the bearing piece is sleeved on the rotating shaft and is connected with the bearing frame.
Further, a third thrust portion is convexly provided on the inner wall surface of the bearing member, and the third thrust portion is configured to be disposed on the side of the rotating shaft away from the outer rotating body and to abut against an end surface of the rotating shaft at the end away from the outer rotating body.
According to another aspect of the present invention, an air supply device is provided, which includes a fan housing, two fan blades located in the fan housing, and the above-mentioned bearing assembly, where the number of the rotating shafts of the bearing assembly is two, and the number of the rotating bodies of the fan housing and the fan blades is two.
Furthermore, the air supply device also comprises two driving components, and the two driving components are respectively connected with the fan shell and the fan blade so as to respectively drive the fan shell and the fan blade to rotate; the mounting component of the bearing assembly is provided with a avoiding hole, and the avoiding hole is used for penetrating an output shaft of a driving assembly connected with the fan blade.
According to still another aspect of the present invention, there is provided an air conditioner including the air blowing device described above.
By applying the technical scheme of the invention, the bearing assembly comprises a bearing seat, a plurality of rotating shafts, a plurality of bearings and a mounting part, wherein the bearing seat is provided with a mounting cavity; the rotating shafts are sequentially nested along the radial direction of the rotating shafts, and any two adjacent rotating shafts can be relatively rotatably arranged; the first ends of the rotating shafts are used for being connected with the rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the mounting cavity; the bearings are sleeved on the rotating shafts in a one-to-one correspondence mode, and the outer wall surface of each bearing is connected with the bearing seat. The bearing assembly can simultaneously provide support for a plurality of rotating bodies capable of rotating independently, and the problem that a bearing seat in the prior art cannot simultaneously provide support for two rotating bodies is solved. And along the direction of the rotation axis of the rotating body, the bearing seat and the mounting part are respectively arranged at two ends of the rotating body, and the mounting part is rotatably connected with the rotating body positioned at the outer side in the plurality of rotating bodies, namely, two ends of the rotating body positioned at the outer side in the plurality of rotating bodies can be supported.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural view of a bearing assembly according to the present invention;
FIG. 2 shows a schematic structural view of a bearing housing, a bearing sleeve, a second bearing, an elastic member and a first bearing of a bearing assembly according to the present invention; wherein, the elastic part is in a first structural form;
FIG. 3 illustrates a schematic structural view of a first thrust portion of a first bearing of the bearing assembly according to the present invention;
FIG. 4 shows a schematic view of a second thrust feature on the first shaft of the bearing assembly according to the present invention;
FIG. 5 is a schematic view of the mating arrangement of the resilient member with the bearing housing and the first bearing of the bearing assembly according to the present invention; wherein, the elastic part has a second structure;
FIG. 6 shows a schematic view of the structure of the resilient member of the bearing assembly of FIG. 5;
FIG. 7 illustrates a schematic view of the mating structure of the first shaft, the first bearing and the second shaft of the bearing assembly according to the invention; wherein, the first bearing is provided with a first thrust part;
FIG. 8 shows a schematic view of a horizontal spacing between a first thrust portion and a third thrust portion of a bearing assembly according to the invention;
FIG. 9 is a schematic structural diagram illustrating the limiting portion of the bearing seat in FIG. 2 being located in the relief groove of the first bearing;
FIG. 10 shows a side view of the retainer portion of the bearing housing of FIG. 9 positioned within the relief groove of the first bearing;
FIG. 11 is a schematic structural view showing the position-limiting part of the bearing seat in FIG. 2 in the position-limiting groove of the first bearing;
FIG. 12 shows a side view of the retainer portion of the bearing housing of FIG. 11 positioned within the retainer groove of the first bearing;
fig. 13 shows a schematic structural view of an air blowing device according to the present invention.
Wherein the figures include the following reference numerals:
1. a bearing assembly; 10. a bearing seat; 101. a mounting cavity; 102. a limiting part; 103. a stopper portion; 11. a first rotating shaft; 112. a second thrust portion; 12. a second rotating shaft; 13. a first bearing; 131. a limiting groove; 132. a yielding groove; 134. a first thrust part; 14. a second bearing; 151. a bearing housing; 152. an elastic member; 1521. a fixing plate; 1522. a movable plate; 171. a bearing bracket; 172. a rotating shaft; 173. a bearing member; 1731. a third thrust portion;
21. a first rotating body; 211. an accommodating chamber; 22. a second rotating body; 23. a first drive assembly; 231. a first drive motor; 232. a first gear; 233. a second gear; 24. a second drive assembly; 241. a second drive motor.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The invention provides a bearing assembly 1, please refer to fig. 1 to 13, the bearing assembly 1 comprises a bearing seat 10, a plurality of rotating shafts, a plurality of bearings and a mounting part, the bearing seat 10 has a mounting cavity 101; the rotating shafts are sequentially nested along the radial direction of the rotating shafts, any two adjacent rotating shafts can be arranged in a relative rotating mode, and two ends of the rotating shaft positioned on the inner side in any two adjacent rotating shafts extend out of the rotating shaft positioned on the outer side; the first ends of the rotating shafts are used for being connected with the rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the installation cavity 101; the plurality of bearings are sleeved on the plurality of rotating shafts in a one-to-one correspondence manner, and the outer wall surface of each bearing is connected with the bearing seat 10. The bearing assembly 1 of the application can provide support for a plurality of independently rotatable rotating bodies simultaneously, and the problem that a bearing seat in the prior art cannot provide support for two rotating bodies simultaneously is solved. The bearing seats 10 and the mounting members are respectively provided at both ends of the rotating bodies in the direction of the rotational axis of the rotating bodies, and the mounting members are rotatably connected to the rotating body located on the outer side among the plurality of rotating bodies (the rotating body located on the outermost side among the plurality of rotating bodies), that is, both ends of the rotating body located on the outer side among the plurality of rotating bodies can be supported.
It should be noted that, two ends of each rotating shaft are respectively a first end and a second end thereof; the bearings are sleeved on the rotating shafts in a one-to-one correspondence mode.
It should be noted that, because the plurality of rotating shafts are sequentially nested along the radial direction of the rotating shafts, the central axes of the plurality of rotating shafts are all parallel; each rotating shaft is rotatably arranged around the central axis thereof.
The rotating shafts are arranged in a nested manner, the rotating shafts are arranged in parallel, and the rotating shafts are arranged in parallel.
It should be noted that, the rotating shaft located at the outer side of any two adjacent rotating shafts is sleeved outside the rotating shaft located at the inner side, that is, the rotating shaft located at the inner side is inserted into the rotating shaft located at the outer side.
Specifically, in any two adjacent rotating shafts, the rotating shaft positioned at the outer side is a hollow shaft, the rotating shaft positioned at the inner side is arranged in a hollow cavity of the rotating shaft positioned at the outer side in a penetrating manner, and the rotating shaft positioned at the inner side and the rotating shaft positioned at the outer side are arranged at intervals so that the two adjacent rotating shafts can rotate relatively; i.e. the diameter of the hollow cavity of the spindle on the outside is greater than the outer diameter of the spindle on the inside.
In this embodiment, the plurality of rotating shafts includes a second rotating shaft 12 and a first rotating shaft 11 sleeved outside the second rotating shaft 12, that is, a central axis of the second rotating shaft 12 is parallel to a central axis of the first rotating shaft 11; the plurality of rotating bodies include a first rotating body 21 and a second rotating body 22 located in the accommodating cavity 211 of the first rotating body 21, i.e., the first rotating body 21 has the accommodating cavity 211; a first end of the first rotating shaft 11 is used for connecting with the first rotating body 21, and a first end of the second rotating shaft 12 is used for connecting with the second rotating body 22; the plurality of bearings comprise a first bearing 13 and a second bearing 14, and the first bearing 13 and the second bearing 14 are respectively sleeved on the first rotating shaft 11 and the second rotating shaft 12.
Specifically, as shown in fig. 7, the second end of the first rotating shaft 11 extends into the mounting cavity 101, the first rotating shaft 11 is a hollow shaft, and the outer diameter of the first rotating shaft 11 is D3The inner diameter of the first rotating shaft 11 is D2，D3>D2(ii) a The second end of the second rotating shaft 12 penetrates out of the hollow cavity of the first rotating shaft 11 and extends into the mounting cavity 101; the first rotating shaft 11 can rotate around the central axis thereof, the second rotating shaft 12 can rotate around the central axis thereof, the first rotating shaft 11 and the second rotating shaft 12 can be arranged in a relative rotation way, the second rotating shaft 12 is arranged at intervals with the cavity wall of the hollow cavity of the first rotating shaft 11, namely, the outer diameter of the second rotating shaft 12 is D1，D2>D1。
Specifically, the second rotating body 22 is provided to be rotatable relative to the first rotating body 21, and the second rotating body 22 is provided to be spaced apart from the first rotating body 21.
Specifically, the outer wall surface of the first bearing 13 and the outer wall surface of the second bearing 14 are both connected to the bearing housing 10.
Specifically, the central axis of the first bearing 13 and the central axis of the second bearing 14 are parallel or coincide.
In this embodiment, the inner wall surface of the mounting cavity 101 is convexly provided with a limiting portion 102, the outer wall surface of the first bearing 13 is provided with a limiting groove 131, and the first bearing 13 and the bearing seat 10 are relatively fixed in the axial direction of the first rotating shaft 11 by clamping the limiting portion 102 in the limiting groove 131; at the same time, the first bearing 13 and the bearing block 10 are also fixed relative to each other in the circumferential direction of the first rotor shaft 11.
Specifically, the limiting portion 102 and the bearing seat 10 are integrally formed.
Specifically, along the axial direction of the first rotating shaft 11, two ends of the first bearing 13 are respectively a first end and a second end; the first end and the second end of the limiting groove 131 are arranged in the direction from the first end to the second end of the first bearing 13, that is, the direction from the first end to the second end of the first bearing 13 is the same as the direction from the first end to the second end of the limiting groove 131.
Alternatively, the direction of the first end to the second end of the first bearing 13 is the same as the direction of the first end to the second end of the first rotating shaft 11.
Specifically, the bearing assembly further includes a support member disposed within the mounting cavity 101, and when the first bearing 13 is located at a predetermined mounting position within the mounting cavity 101, a second end of the first bearing 13 abuts against the support member; the first end of the limiting groove 131 extends to the first end face of the first bearing 13, and the side wall of the second end of the limiting groove 131 is used for abutting against the limiting part 102; the structure is arranged in the axial direction of the first bearing 13 to limit the first bearing 13, so that the first bearing 13 is prevented from shaking and shifting in the axial direction; the axial direction of the first bearing 13 is the same as the axial direction of the first rotating shaft 11, that is, the central axis of the first bearing 13 coincides with the central axis of the first rotating shaft 11.
Specifically, the outer wall surface of the first bearing 13 is provided with a strip-shaped abdicating groove 132, and the abdicating groove 132 and the limiting groove 131 are distributed along the circumferential direction of the first bearing 13; two ends of the receding groove 132 extend to two end faces of the first bearing 13 respectively, so that when the first bearing 13 is installed in the installation cavity 101, the limiting part 102 is located in the receding groove 132 and the first bearing 13 can slide relative to the limiting part 102; this structure is provided to avoid interference of the stopper portion 102 with the first bearing 13 when the first bearing 13 is fitted into the mounting cavity 101.
Specifically, as shown in fig. 2, the receding groove 132 and the limiting groove 131 are arranged at intervals along the circumferential direction of the first bearing 13; the support member is telescopically arranged in the axial direction of the first bearing 13.
In a specific implementation process, as shown in fig. 2 and fig. 9 to fig. 12, the limiting portion 102 is located in the receding groove 132, and the first bearing 13 gradually slides into the mounting cavity 101 along the axial direction of the first bearing 13 relative to the limiting portion 102 until the first bearing 13 slides to a side of the limiting portion 102 close to the supporting component (along the axial direction of the first bearing 13), at which time, the first bearing 13 is located at a side of a predetermined mounting position of the first bearing 13 close to the supporting component (along the axial direction of the first bearing 13), and at which time, the first bearing 13 compresses the supporting component; then the first bearing 13 is rotated around the central axis of the first bearing 13 to enable the limiting groove 131 and the limiting part 102 to be oppositely arranged; under the elastic force action of the compressed support component, the first bearing 13 moves to the preset installation position, the groove wall of the limiting groove 131 slides along the limiting part 102 in the process, the limiting part 102 gradually fills the limiting groove 131 until the limiting part 102 is located in the limiting groove 131, and the limiting matching of the limiting part 102 and the limiting groove 131 is realized.
Specifically, the supporting component includes a supporting member and an elastic member 152, the supporting member is fixedly disposed, the elastic member 152 is sandwiched between the supporting member and the first bearing 13, and the expansion and contraction direction of the elastic member 152 is the same as the axial direction of the first bearing 13.
In this embodiment, the first structural form of the elastic member 152 is: as shown in fig. 1 and 2, the elastic member 152 is a spring or an elastic sleeve, and both ends of the elastic member 152 are respectively abutted against the support member and the first bearing 13. Specifically, the second rotating shaft 12 is disposed in a cavity of the spring or the elastic sleeve, and the second rotating shaft 12 and the spring or the elastic sleeve are disposed at an interval.
In this embodiment, the second structure form of the elastic member 152 is: as shown in fig. 5 and 6, the elastic member 152 is a spring structure; specifically, the elastic sheet structure includes a fixed plate 1521 and a movable plate 1522 arranged at an included angle, the movable plate 1522 has a connection end connected to the fixed plate 1521 and a free end far away from the fixed plate 1521, the free end of the movable plate 1522 is movably arranged near or far away from the fixed plate 1521, and the direction of the movable plate 1522 near or far away from the fixed plate 1521 is the same as the axial direction of the first bearing 13, that is, the movable plate 1522 is telescopic along the axial direction of the first bearing 13; the fixed plate 1521 abuts against the support, and the free end of the movable plate 1522 abuts against the first bearing 13.
Optionally, the number of the spring structures is multiple, and the multiple spring structures are distributed at intervals along the circumferential direction of the first bearing 13.
Optionally, the limiting grooves 131 and the avoiding grooves 132 are arranged in pairs, the limiting grooves 131 and the avoiding grooves 132 are in multiple pairs, and the multiple pairs of limiting grooves 131 and the avoiding grooves 132 are distributed at intervals along the circumferential direction of the first bearing 13; the plurality of limiting parts 102 are distributed at intervals along the circumferential direction of the mounting cavity 101; the plurality of stopper portions 102 are provided in one-to-one correspondence with the plurality of pairs of stopper grooves 131 and relief grooves 132. That is, the plurality of limiting grooves 131 are distributed at intervals along the circumferential direction of the first bearing 13, and the plurality of limiting portions 102 are engaged with the plurality of limiting grooves 131 in a one-to-one correspondence manner.
In the present embodiment, the first bearing 13 and the first rotary shaft 11 are relatively fixed in the axial direction of the first rotary shaft 11.
Specifically, the first axial limiting mode of the first bearing 13 and the first rotating shaft 11 is as follows: as shown in fig. 3, a first thrust portion 134 is provided on the inner wall surface of the first bearing 13 so as to protrude inward, and the first thrust portion 134 is provided on the side of the first rotating shaft 11 away from the first rotating body 21 and is configured to be in limit contact with the second end of the first rotating shaft 11.
Optionally, the first thrust part 134 is located at an end of the first bearing 13, i.e. the first thrust part 134 is located at a second section end of the first bearing 13.
Optionally, as shown in fig. 7, the first thrust portion 134 is an annular structure, and the first thrust portion 134 is disposed at an interval with the second rotating shaft 12 to avoid interference of the first thrust portion 134 with the second rotating shaft 12; i.e., the first thrust portion 134 has an inner diameter D4，D4>D1。
Optionally, the inner diameter of the first rotating shaft 11 is larger than the inner diameter of the first thrust part 134, i.e. D2>D4。
Specifically, the second axial limiting mode of the first bearing 13 and the first rotating shaft 11 is as follows: as shown in fig. 4, a second thrust portion 112 is provided on the outer wall surface of the first rotating shaft 11 so as to protrude outward, and the second thrust portion 112 is provided on the side of the first bearing 13 close to the first rotating body 21 and is configured to abut against the end surface of the first bearing 13, that is, the second thrust portion 112 abuts against the first end surface of the first bearing 13.
Optionally, the second thrust portion 112 is an annular structure.
In this embodiment, the bearing assembly further includes a bearing sleeve 151, that is, the supporting component includes the bearing sleeve 151, the bearing sleeve 151 is a supporting component, and the bearing sleeve 151 is disposed in the mounting cavity 101 and sleeved outside the second bearing 14; the bearing sleeve 151 is located on one side of the first bearing 13 in the axial direction of the first bearing 13 and abuts against the first bearing 13.
Specifically, when the first bearing 13 is located at a predetermined mounting position within the mounting cavity 101, the second end of the first bearing 13 abuts against the bearing housing 151.
Specifically, the bearing assembly further includes a stopper 103, that is, the supporting component includes a stopper 103, the stopper 103 is protruded on the inner wall surface of the mounting cavity 101 and is located on one side of the bearing sleeve 151 away from the first bearing 13, and the stopper 103 is used for being in limit abutment with the bearing sleeve 151.
Specifically, the stopper 103 and the bearing seat 10 are integrally formed.
Optionally, the bearing sleeve 151 is made of rubber, and the bearing sleeve 151 is preferably made of rubber with good wear resistance.
In particular, the bearing block 10 is intended to be fixedly arranged on a machine frame.
In the present embodiment, the mounting member includes a bearing bracket 171, a rotation shaft 172, and a bearing member 173, and the rotation shaft 172 is connected to the outer one of the plurality of rotating bodies; the bearing 173 is sleeved on the rotating shaft 172 and connected to the bearing frame 171.
Specifically, the inner wall surface of the bearing member 173 is provided with a third thrust portion 1731 protruding inwards, the third thrust portion 1731 is configured to be disposed on one side of the rotating shaft 172 away from the outer rotating body and to be abutted with an end surface of one end of the rotating shaft 172 away from the outer rotating body so as to axially limit the outer rotating body; here, the outer rotating body refers to a rotating body located on the outer side among the plurality of rotating bodies.
Specifically, the center axis of the rotary shaft 172 is parallel to the rotational axis of the outer rotary body, i.e., the center axis of the rotary shaft 172 is parallel to the center axis of each rotary shaft.
The invention also provides an air supply device, which comprises a fan shell, fan blades and the bearing assembly, wherein the fan blades are positioned in the fan shell, the number of the rotating shafts of the bearing assembly is two, the fan shell and the fan blades are two rotating bodies, namely the fan shell is a first rotating body 21, the fan shell is rotatably connected with the mounting part, and the fan blades are second rotating bodies 22; the air supply device can not only realize rotation of the fan blades, but also realize independent rotation of the fan shell, so that the air deflector can be omitted, and air supply resistance is reduced.
Specifically, the air supply device comprises a cross-flow fan, and a fan shell and a fan blade of the cross-flow fan form the fan shell and the fan blade.
Optionally, the centre axis of the turning shaft 172 coincides with the centre axis of the first turning shaft 11.
In this embodiment, the air supply device further includes two driving assemblies, and the two driving assemblies are respectively connected with the fan housing and the fan blade to respectively drive the fan housing and the fan blade to rotate. In the specific implementation process, the rotating speed of the fan shell is less than that of the fan blade.
Specifically, as shown in fig. 1 and 13, the two driving assemblies are a first driving assembly 23 and a second driving assembly 24, respectively, and the first driving assembly 23 is connected with the fan housing to drive the fan housing to rotate; the second driving assembly 24 is connected with the fan blades to drive the fan blades to rotate.
Specifically, the first rotating body 21 is a fan casing of the cross flow fan, so the first rotating body 21 has a columnar shape, and the extending direction of the first rotating body 21 is the same as the extending direction of the rotation axis of the first rotating body 21; one end of the first rotating body 21 is used for connecting with the first rotating shaft 11, and the other end of the first rotating body 21 is used for connecting with the first driving assembly 23.
Specifically, the second rotating body 22 is a fan blade of a crossflow blower, one shaft end of the second rotating body 22 is used for being connected with the second rotating shaft 12, and the other shaft end of the second rotating body 22 is used for being connected with the second driving assembly 24.
Specifically, the first driving assembly 23 includes a first driving motor 231, a first gear 232 and a second gear 233, the first gear 232 is sleeved on the first rotating body 21, the first gear 232 and the second gear 233 are engaged with each other, and the second gear 233 is sleeved on an output shaft of the first driving motor 231, so that the first driving motor 231 drives the first rotating body 21 to rotate through the first gear 232 and the second gear 233.
Specifically, the second driving assembly 24 includes a second driving motor 241, and an output shaft of the second driving motor 241 is connected to a shaft end of the second rotating body 22 to drive the second rotating body 22 to rotate.
In this embodiment, the mounting component of the bearing assembly has an avoiding hole, the avoiding hole is used for the output shaft of the driving assembly connected with the fan blade to penetrate, that is, the avoiding hole is used for the output shaft of the second driving assembly 24 to penetrate, and the output shaft of the second driving assembly 24 is the output shaft of the second driving motor 241; the output shaft of the second driving assembly 24 is passed through the escape hole and connected to the second rotating body 22.
Specifically, the rotating shaft 172 is a hollow shaft, a hollow cavity of the rotating shaft 172 is used for the output shaft of the second driving assembly 24 to penetrate, and at this time, a yielding hole is formed in the hollow cavity of the rotating shaft 172; the output shaft of the second drive assembly 24 is rotatably disposed relative to the cavity wall of the hollow cavity of the rotating shaft 172, and the output shaft of the second drive assembly 24 is spaced from the cavity wall of the hollow cavity of the rotating shaft 172.
Specifically, the third thrust portion 1731 is provided on a side of the rotating shaft 172 away from the fan housing and is configured to abut against an end surface of one end of the rotating shaft 172 away from the fan housing, so as to axially limit the fan housing.
Specifically, the third thrust portion 1731 is an annular structure, an annular hole of the third thrust portion 1731 is used for the output shaft of the second driving assembly 24 to pass through, and at this time, the hollow cavity of the rotating shaft 172 and the annular hole of the third thrust portion 1731 form an avoiding hole together; the output shaft of the second driving assembly 24 and the third thrust portion 1731 are rotatably disposed relative to each other, and the output shaft of the second driving assembly 24 and the hole wall of the annular hole of the third thrust portion 1731 are disposed at an interval.
Specifically, the bearing frame 171 has a through hole for the output shaft of the second driving assembly 24 to pass through, and at this time, the hollow cavity of the rotating shaft 172, the annular hole of the third thrust portion 1731 and the through hole of the bearing frame 171 together form an avoiding hole; the output shaft of the second driving assembly 24 and the bearing bracket 171 are relatively rotatably arranged, and the output shaft of the second driving assembly 24 and the wall of the through hole of the bearing bracket 171 are arranged at intervals.
In the specific implementation process, two ends of the fan blade are respectively connected with the second rotating shaft 12 and the second driving assembly 24 so as to axially limit the fan blade and avoid axial movement of the fan blade.
In this embodiment, as shown in FIG. 8The horizontal distance between the third thrust part 1731 and the first thrust part 134 is L2The direction of the horizontal distance between the third thrust part 1731 and the first thrust part 134 is parallel to or the same as the axial direction of the first bearing 13; since the supporting member is telescopically disposed, the horizontal distance L between the third thrust part 1731 and the first thrust part 1342The size is variable; the maximum expansion and contraction amount of the support member is Δ L.
Specifically, the horizontal distance between the end of the rotating shaft 172 away from the end of the fan housing and the end of the first rotating shaft 11 away from the end of the fan housing is L1The direction of the horizontal distance between the end of the rotating shaft 172 far away from the end of the fan housing and the end of the first rotating shaft 11 far away from the end of the fan housing is parallel to or the same as the axial direction of the first rotating shaft 11 and the axial direction of the rotating shaft 172; l when the support member is compressed by the first bearing 132>L1When the support member is in tension, L2<L1；L2Has a value range of greater than or equal to (L)1-. DELTA.L) and less than or equal to (L)1+. DELTA L), i.e. (L)1-△L)≤L2≤(L1+△L)。
Specifically, the meshing thickness of the first and second gears 232 and 233 is t, and the meshing thickness of the first and second gears 232 and 233 is the smaller of the thickness of the first gear 232 and the thickness of the second gear 233; the thickness direction of the first gear 232 is the same as the extending direction of the rotation axis of the first gear 232, and the thickness direction of the second gear 233 is the same as the extending direction of the rotation axis of the second gear 233. The t & ltDELTA & gt can reduce the axial movement of the fan shell and improve the working reliability of the fan shell.
Specifically, the main body of the first driving motor 231 and the main body of the second driving motor 241 are both for being fixedly disposed on the frame.
The invention also provides an air conditioner which comprises the air supply device.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
in the bearing assembly 1 of the present invention, the bearing assembly 1 includes a bearing housing 10, a plurality of rotating shafts, a plurality of bearings, and a mounting part, the bearing housing 10 having a mounting cavity 101; the rotating shafts are sequentially nested along the radial direction of the rotating shafts, and any two adjacent rotating shafts can be relatively rotatably arranged; the first ends of the rotating shafts are used for being connected with the rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the installation cavity 101; the plurality of bearings are sleeved on the plurality of rotating shafts in a one-to-one correspondence manner, and the outer wall surface of each bearing is connected with the bearing seat 10. The bearing assembly 1 of the application can provide support for a plurality of independently rotatable rotating bodies simultaneously, and the problem that a bearing seat in the prior art cannot provide support for two rotating bodies simultaneously is solved. The bearing seat 10 and the mounting member are respectively provided at both ends of the rotating body in the direction of the rotation axis of the rotating body, and the mounting member is rotatably connected to the rotating body located on the outer side among the plurality of rotating bodies, that is, both ends of the rotating body located on the outer side among the plurality of rotating bodies can be supported.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A bearing assembly, comprising:
a bearing seat (10), the bearing seat (10) having a mounting cavity (101);
the rotating shafts are sequentially nested along the radial direction of the rotating shafts, and any two adjacent rotating shafts can be arranged in a relatively rotating manner; the first ends of the rotating shafts are used for being connected with a plurality of rotating bodies which are sequentially nested and can rotate independently in a one-to-one correspondence mode, and the second ends of the rotating shafts extend into the mounting cavity (101);
the bearings are sleeved on the rotating shafts in a one-to-one correspondence mode, and the outer wall surface of each bearing is connected with the bearing seat (10);
and the bearing seat (10) and the mounting component are respectively arranged at two ends of the rotating body along the direction of the rotating axis of the rotating body, and the mounting component is rotationally connected with the rotating body positioned at the outer side in the plurality of rotating bodies.
2. The bearing assembly according to claim 1, wherein, in any two adjacent rotating shafts, the rotating shaft positioned at the outer side is a hollow shaft, the rotating shaft positioned at the inner side is inserted into the hollow cavity of the rotating shaft positioned at the outer side, and the rotating shaft positioned at the inner side is arranged at a distance from the rotating shaft positioned at the outer side.
3. The bearing assembly according to claim 1, characterized in that the plurality of shafts comprises a second shaft (12) and a first shaft (11) sleeved outside the second shaft (12);
the rotating bodies comprise a first rotating body (21) and a second rotating body (22) positioned in a containing cavity (211) of the first rotating body (21), a first end of the first rotating shaft (11) is used for being connected with the first rotating body (21), and a first end of the second rotating shaft (12) is used for being connected with the second rotating body (22);
the bearings comprise a first bearing (13) and a second bearing (14), and the first bearing (13) and the second bearing (14) are sleeved on the first rotating shaft (11) and the second rotating shaft (12) respectively.
4. The bearing assembly according to claim 3, characterized in that a limiting part (102) is convexly arranged on the inner wall surface of the mounting cavity (101), a limiting groove (131) is arranged on the outer wall surface of the first bearing (13), and the first bearing (13) and the bearing seat (10) are relatively fixed in the axial direction of the first rotating shaft (11) by clamping the limiting part (102) in the limiting groove (131).
5. A bearing assembly according to claim 4, characterized in that the first bearing (13) has a first end and a second end at its two ends, respectively, the limiting groove (131) having a first end and a second end in a direction from the first end to the second end of the first bearing (13);
the bearing assembly further comprises a support member arranged in the mounting cavity (101), a second end of the first bearing (13) abutting the support member when the first bearing (13) is in a predetermined mounting position in the mounting cavity (101); the first end of the limiting groove (131) extends to the first end face of the first bearing (13), and the side wall of the second end of the limiting groove (131) is used for being abutted to the limiting part (102).
6. The bearing assembly according to claim 5, characterized in that the outer wall surface of the first bearing (13) is provided with a strip-shaped abdicating groove (132), and the abdicating groove (132) and the limiting groove (131) are distributed along the circumferential direction of the first bearing (13); the both ends of groove of stepping down (132) extend to respectively two terminal surfaces of first bearing (13), in order with first bearing (13) are packed into when installation cavity (101), make spacing portion (102) are located step down in groove (132) and make first bearing (13) are relative spacing portion (102) slidable.
7. The bearing assembly according to claim 6, characterized in that the relief groove (132) is spaced apart from the limit groove (131); the supporting component is arranged in a telescopic mode along the axial direction of the first bearing (13), and the first bearing (13) is located on one side, close to the supporting component, of the limiting part (102) by enabling the first bearing (13) to compress the supporting component; and the first bearing (13) is rotated to enable the limiting groove (131) and the limiting part (102) to be oppositely arranged, and then when the first bearing (13) moves to the preset installation position, the limiting part (102) is located in the limiting groove (131).
8. The bearing assembly of claim 7, wherein the support member comprises:
the supporting piece is fixedly arranged;
an elastic member (152), the elastic member (152) being interposed between the support member and the first bearing (13).
9. The bearing assembly of claim 3,
a first thrust part (134) is convexly arranged on the inner wall surface of the first bearing (13), and the first thrust part (134) is arranged on one side, far away from the first rotating body (21), of the first rotating shaft (11) and is in limited abutting joint with the second end of the first rotating shaft (11); or
And a second thrust part (112) is convexly arranged on the outer wall surface of the first rotating shaft (11), and the second thrust part (112) is arranged on one side, close to the first rotating body (21), of the first bearing (13) and is abutted against the end surface of the first bearing (13).
10. The bearing assembly of claim 3, wherein the bearing assembly further comprises:
the bearing sleeve (151) is arranged in the mounting cavity (101) and sleeved on the outer side of the second bearing (14); the bearing sleeve (151) is positioned on one side of the first bearing (13) along the axial direction of the first bearing (13) and is abutted with the first bearing (13);
the stopping portion (103) is arranged on the inner wall surface of the mounting cavity (101) in a protruding mode and located on one side, far away from the first bearing (13), of the bearing sleeve (151), and the stopping portion (103) is used for being in limit abutting contact with the bearing sleeve (151).
11. The bearing assembly of claim 1, wherein the mounting member comprises:
a bearing frame (171);
a rotating shaft (172), wherein the rotating shaft (172) is connected to an outer rotating body of the plurality of rotating bodies;
bearing spare (173), bearing spare (173) cover is established axis of rotation (172) go up and with bearing bracket (171) are connected.
12. A bearing assembly according to claim 11, characterized in that the inner wall of the bearing member (173) is provided, facing convexly, with a third thrust portion (1731), the third thrust portion (1731) being intended to be arranged at a side of the rotary shaft (172) remote from the outer rotary body and being intended to abut against an end face of an end of the rotary shaft (172) remote from the outer rotary body.
13. An air supply device, comprising a fan shell and a fan blade positioned in the fan shell, characterized in that the air supply device further comprises a bearing assembly of any one of claims 1 to 12, wherein the number of the rotating shafts of the bearing assembly is two, and the fan shell and the fan blade are two rotating bodies.
14. The air supply arrangement of claim 13, further comprising two drive assemblies coupled to the fan housing and the fan blade, respectively, for driving the fan housing and the fan blade, respectively, in rotation; the mounting component of the bearing assembly is provided with an avoiding hole, and the avoiding hole is used for enabling an output shaft of the driving assembly connected with the fan blade to penetrate through.
15. An air conditioner characterized by comprising the air blowing device of claim 13 or 14.
CN202111439333.0A 2021-11-29 2021-11-29 Bearing assembly, air supply device and air conditioner Active CN114183393B (en)

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CN109026784A (en) * 2018-09-03 2018-12-18 珠海格力电器股份有限公司 Motor and electric fan comprising same
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CN210129795U (en) * 2019-09-16 2020-03-06 广东美的环境电器制造有限公司 Motor assembly and air supply device
CN112943679A (en) * 2020-09-11 2021-06-11 佛山市创联科技有限公司 Rotating shaft transmission structure, air compression device, fan, cutting machine and airplane blade
CN113188005A (en) * 2021-05-18 2021-07-30 浙江大华技术股份有限公司 Rotating mechanism and holder device with same
CN216589250U (en) * 2021-11-29 2022-05-24 珠海格力电器股份有限公司 Bearing assembly, air supply device and air conditioner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105793538A (en) * 2013-12-09 2016-07-20 大陆汽车有限公司 Supercharging device for an internal combustion engine of a motor vehicle, and method for producing the supercharging device
WO2015157053A1 (en) * 2014-04-11 2015-10-15 Borgwarner Inc. Multi-piece journal bearing
WO2019161695A1 (en) * 2018-02-26 2019-08-29 珠海格力电器股份有限公司 Air duct assembly and air conditioner
CN109026784A (en) * 2018-09-03 2018-12-18 珠海格力电器股份有限公司 Motor and electric fan comprising same
CN210129795U (en) * 2019-09-16 2020-03-06 广东美的环境电器制造有限公司 Motor assembly and air supply device
CN112943679A (en) * 2020-09-11 2021-06-11 佛山市创联科技有限公司 Rotating shaft transmission structure, air compression device, fan, cutting machine and airplane blade
CN113188005A (en) * 2021-05-18 2021-07-30 浙江大华技术股份有限公司 Rotating mechanism and holder device with same
CN216589250U (en) * 2021-11-29 2022-05-24 珠海格力电器股份有限公司 Bearing assembly, air supply device and air conditioner

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