JP2501824Y2 - Bearing structure for blower - Google Patents
Bearing structure for blowerInfo
- Publication number
- JP2501824Y2 JP2501824Y2 JP1991002012U JP201291U JP2501824Y2 JP 2501824 Y2 JP2501824 Y2 JP 2501824Y2 JP 1991002012 U JP1991002012 U JP 1991002012U JP 201291 U JP201291 U JP 201291U JP 2501824 Y2 JP2501824 Y2 JP 2501824Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing member
- shaft
- blower
- vibration
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Support Of The Bearing (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Vibration Prevention Devices (AREA)
Description
【0001】[0001]
【産業上の利用分野】本願考案は、空気調和機に使用さ
れる遠心式送風機のロータ回転軸を軸支する送風機用軸
受構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower bearing structure for rotatably supporting a rotor rotating shaft of a centrifugal blower used in an air conditioner.
【0002】[0002]
【従来の技術】例えば、天吊型空気調和機の場合、図3
に示すように、ケーシング1内に、複数の遠心式送風機
2,2・・を直列に連結してなる送風装置Aが用いられ
る場合が多い。この場合、1個の両軸ファンモータ3の
駆動軸3a,3aに対して、1個のファンロータ4および
直列3個のファンロータ4,4,4をそれぞれ連結する構
造がとられることがあるが、直列3個のファンロータ
4,4,4に共通なロータ回転軸5の端部は、支持板6に
設けられた軸受7に対して軸支されることとなっている
(実願平2ー39221号明細書および図面参照)。符号
8,9は空気吹出口、10は熱交換器、11はファンハ
ウジング、12はファンモータ駆動軸3aとロータ回転
軸5とを防振結合する軸継手である。2. Description of the Related Art For example, in the case of a ceiling suspension type air conditioner, FIG.
As shown in FIG. 3, a blower A in which a plurality of centrifugal blowers 2, 2, ... Is connected in series is often used in the casing 1. In this case, a structure may be adopted in which one fan rotor 4 and three fan rotors 4, 4, 4 in series are connected to the drive shafts 3a, 3a of one double-shaft fan motor 3, respectively. However, the end portion of the rotor rotation shaft 5 common to the three fan rotors 4, 4, 4 in series is pivotally supported on the bearing 7 provided on the support plate 6.
(See Japanese Patent Application No. 2-39221 specification and drawings). Reference numerals 8 and 9 are air outlets, 10 is a heat exchanger, 11 is a fan housing, and 12 is a shaft coupling that connects the fan motor drive shaft 3a and the rotor rotation shaft 5 with vibration isolation.
【0003】[0003]
【考案が解決しようとする課題】そして、前記軸受7
は、図4に示すように、ロータ回転軸5からの振動等が
ケーシング1に伝播するのを防止するために、前記支持
板6に取り付けられた防振ゴム13と、該防振ゴム13
に被包され且つ球面を介して保持されている軸受部材1
4とによって構成されているのが通例である。このよう
な軸受構造とする場合、軸受部材14に対して軸心方向
以外の力が作用すると、軸受部材14は容易に回転して
しまうおそれがある。一方、ロータ回転軸5の端部には
面取り加工が施されるのが一般的であり、先端に平坦面
Fが残置されることとなっている(JISB0903参
照)。[Problems to be solved by the invention] The bearing 7
As shown in FIG. 4, in order to prevent the vibration and the like from the rotor rotary shaft 5 from propagating to the casing 1, the vibration-proof rubber 13 attached to the support plate 6 and the vibration-proof rubber 13 are provided.
Bearing member 1 that is encapsulated in and is held via a spherical surface
It is usually constituted by 4 and 4. In the case of such a bearing structure, when a force other than the axial direction acts on the bearing member 14, the bearing member 14 may easily rotate. On the other hand, the end portion of the rotor rotation shaft 5 is generally chamfered, and the flat surface F is left at the tip (see JISB0903).
【0004】従って、上記構造の軸受7に対してロータ
回転軸5の端部を軸支しようとする場合、軸受部材14
の軸穴15と防振ゴム13の内周面との間に段差が形成
されるのが通例であるところから、ロータ回転軸5端部
の平坦面Fが軸受部材14の軸穴15の口縁15aに当
たって、軸受部材14が容易に回転してしまい、その結
果軸受部材14へのロータ回転軸5の挿入ができないと
いう事態が生ずるおそれがある。なお、軸受部材14の
軸穴口縁15aまで防振ゴム13が被包する構造には、
軸受部材14の組付が難しくなるためできない。Therefore, when the end portion of the rotor rotating shaft 5 is to be supported by the bearing 7 having the above structure, the bearing member 14
Since a step is usually formed between the shaft hole 15 of the rotor and the inner peripheral surface of the vibration isolating rubber 13, the flat surface F at the end of the rotor rotation shaft 5 is formed in the opening of the shaft hole 15 of the bearing member 14. The bearing member 14 may easily rotate by hitting the edge 15a, resulting in a situation in which the rotor rotating shaft 5 cannot be inserted into the bearing member 14. In addition, in the structure in which the vibration-proof rubber 13 is wrapped up to the shaft hole mouth edge 15a of the bearing member 14,
This is not possible because the assembly of the bearing member 14 becomes difficult.
【0005】本願考案は、上記の点に鑑みてなされたも
ので、ロータ回転軸の軸受部材への挿入を容易ならしめ
ることを目的とするものである。The present invention has been made in view of the above points, and it is an object of the present invention to facilitate insertion of a rotor rotating shaft into a bearing member.
【0006】[0006]
【課題を解決するための手段】本願考案では、上記課題
を解決するための手段として、図面に示すように、空気
調和機に使用される遠心式送風機2におけるロータ回転
軸5を、支持板6に取り付けられた防振ゴム13に被包
され且つ球面を介して保持されている軸受部材14に対
して回動自在に軸支する送風機用軸受構造において、前
記ロータ回転軸5の端部に半球面部16を形成するとと
もに、該半球面部16の半径をA、前記軸受部材14の
軸穴15と前記防振ゴム13の内周面との段差をBとし
たとき、A>Bとなるように設定している。In the present invention, as a means for solving the above problems, as shown in the drawings, the rotor rotating shaft 5 in the centrifugal blower 2 used in the air conditioner is supported by the support plate 6 as shown in FIG. In a bearing structure for a blower, which is rotatably supported by a bearing member 14 which is covered with a vibration-proof rubber 13 attached to a rotor and is held via a spherical surface, a hemisphere is provided at an end of the rotor rotation shaft 5. When the surface portion 16 is formed and the radius of the hemispherical surface portion 16 is A and the step between the shaft hole 15 of the bearing member 14 and the inner peripheral surface of the vibration isolating rubber 13 is B, A> B It is set.
【0007】[0007]
【作用】本願考案では、上記手段によって次のような作
用が得られる。In the present invention, the following actions can be obtained by the above means.
【0008】即ち、ロータ回転軸5を軸受部材14に嵌
挿するに当たって、ロータ回転軸5先端の半球面部16
が軸受部材14の軸穴15の口縁に当接されたとして
も、A>Bとされているところから、半球面部16の曲
面(即ち、反挿入方向に対して傾斜する曲面)に案内さ
れてロータ回転軸5は軸穴15にスムーズに挿入される
こととなる。That is, when the rotor rotary shaft 5 is fitted into the bearing member 14, the hemispherical portion 16 at the tip of the rotor rotary shaft 5 is inserted.
Even if it comes into contact with the rim of the shaft hole 15 of the bearing member 14, since A> B, it is guided to the curved surface of the hemispherical surface portion 16 (that is, the curved surface inclined with respect to the anti-insertion direction). Thus, the rotor rotation shaft 5 is smoothly inserted into the shaft hole 15.
【0009】[0009]
【考案の効果】本願考案によれば、空気調和機に使用さ
れる遠心式送風機2におけるロータ回転軸5を、支持板
6に取り付けられた防振ゴム13に被包され且つ球面を
介して保持されている軸受部材14に対して回動自在に
軸支する送風機用軸受構造において、前記ロータ回転軸
5の端部に半球面部16を形成するとともに、該半球面
部16の半径をA、前記軸受部材14の軸穴15と前記
防振ゴム13の内周面との段差をBとしたとき、A>B
となるように設定したので、ロータ回転軸5を軸受部材
14に嵌挿するに当たって、ロータ回転軸5先端の半球
面部16が軸受部材14の軸穴15の口縁に当接された
としても、半球面部16の曲面(即ち、反挿入方向に対
して傾斜する曲面)に案内されてロータ回転軸5は軸穴
15にスムーズに挿入されることとなり、組立作業性の
向上に大いに寄与するという実用的な効果がある。According to the present invention, the rotor rotary shaft 5 in the centrifugal blower 2 used in the air conditioner is covered with the vibration-proof rubber 13 attached to the support plate 6 and held via the spherical surface. In a bearing structure for a blower that rotatably supports a bearing member 14, the hemispherical surface portion 16 is formed at the end of the rotor rotation shaft 5, and the radius of the hemispherical surface portion 16 is A. When the step difference between the shaft hole 15 of the member 14 and the inner peripheral surface of the vibration isolating rubber 13 is B, A> B
Therefore, even when the hemispherical surface portion 16 at the tip of the rotor rotation shaft 5 is brought into contact with the rim of the shaft hole 15 of the bearing member 14 when the rotor rotation shaft 5 is inserted into the bearing member 14, The rotor rotary shaft 5 is smoothly inserted into the shaft hole 15 by being guided by the curved surface of the hemispherical surface portion 16 (that is, the curved surface inclined with respect to the opposite insertion direction), which greatly contributes to the improvement of the assembly workability. Has a positive effect.
【0010】[0010]
【実施例】以下、図1および2を参照して本願考案の好
適な実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIGS.
【0011】本実施例の送風機用軸受構造も、前述の従
来技術において説明したものと同様に、天吊型空気調和
機における遠心式送風機2のロータ回転軸5を防振軸支
する場合に適用されるものである(図3参照)。The blower bearing structure of this embodiment is also applied to the case where the rotor rotary shaft 5 of the centrifugal blower 2 in the ceiling suspension type air conditioner is supported by a vibration isolating shaft, as in the above-mentioned prior art. (See FIG. 3).
【0012】さて、本実施例の軸受構造においても前述
の従来技術と同様、図1および2に示すように、ロータ
回転軸5からの振動等がケーシング1に伝播するのを防
止するために、支持板6に取り付けられた防振ゴム13
と、該防振ゴム13に被包され且つ球面を介して保持さ
れている軸受部材14とによって軸受7が構成されてい
る。つまり、防振ゴム13は、支持板6に取り付けられ
る取付部13aと、軸受部材14を保持するメタル保持
部13bとからなる略円盤状とされており、軸受部材1
4と防振ゴム13とは球面保持とされている。この場
合、軸受部材14の軸穴15と防振ゴム13の内周面と
の間には段差B(図2参照)が形成される。該段差B
は、軸受部材14を防振ゴム13で被包する際に軸受部
材14を完全に被包することが難しいところから、当然
に形成される。In the bearing structure of this embodiment as well, as in the prior art described above, as shown in FIGS. 1 and 2, in order to prevent the vibration from the rotor rotating shaft 5 from propagating to the casing 1, Anti-vibration rubber 13 attached to the support plate 6
The bearing 7 is composed of the bearing member 14 which is covered with the vibration-proof rubber 13 and is held via the spherical surface. That is, the anti-vibration rubber 13 has a substantially disc shape including the mounting portion 13 a mounted on the support plate 6 and the metal holding portion 13 b holding the bearing member 14.
4 and the anti-vibration rubber 13 are spherical surfaces. In this case, a step B (see FIG. 2) is formed between the shaft hole 15 of the bearing member 14 and the inner peripheral surface of the antivibration rubber 13. The step B
Is naturally formed because it is difficult to completely enclose the bearing member 14 when encapsulating the bearing member 14 with the anti-vibration rubber 13.
【0013】このような軸受構造とすることにより、ロ
ータ回転軸5の振動に伴って軸受部材14に上下左右方
向の力が作用した場合であっても、それらの力が軸受部
材14の球面保持により効果的に防振ゴム13に吸収さ
れることとなるのである。なお、軸受部材14に対して
軸心方向以外の力が作用すると、軸受部材14は容易に
回転してしまうおそれがある。符号15は軸受部材14
の軸穴である。With such a bearing structure, even when forces in the vertical and horizontal directions act on the bearing member 14 due to the vibration of the rotor rotary shaft 5, those forces hold the spherical surface of the bearing member 14. Therefore, it is effectively absorbed by the anti-vibration rubber 13. When a force other than the axial direction is applied to the bearing member 14, the bearing member 14 may easily rotate. Reference numeral 15 is a bearing member 14
It is a shaft hole.
【0014】そして、本実施例の場合、前記ロータ回転
軸5の端部には、該ロータ回転軸5の軸受部材14への
挿入を容易ならしめるべく半球面部16が形成されてお
り、該半球面部16の半径をA(図2参照)とすると
き、A>Bとなるように設定されている。In the case of this embodiment, a hemispherical surface portion 16 is formed at the end portion of the rotor rotating shaft 5 to facilitate the insertion of the rotor rotating shaft 5 into the bearing member 14, and the hemispherical portion 16 is formed. When the radius of the surface portion 16 is A (see FIG. 2), it is set such that A> B.
【0015】上記の如く構成したことにより、図2に示
すように、ロータ回転軸5を、矢印P方向から軸受部材
14に嵌挿するに当たって、ロータ回転軸5先端の半球
面部16が軸受部材14の軸穴15の口縁に当接された
としても、A>Bとされているところから、半球面部1
6の曲面(即ち、反挿入方向に対して傾斜する曲面)に
案内されてロータ回転軸5は軸穴15にスムーズに挿入
されることとなり、組立作業性の向上に大いに寄与す
る。つまり、ロータ回転軸5の挿入時において、軸受部
材14に軸心方向以外の力が作用することがなくなるの
である。With the above construction, as shown in FIG. 2, when the rotor rotary shaft 5 is fitted into the bearing member 14 in the direction of arrow P, the hemispherical surface portion 16 at the tip of the rotor rotary shaft 5 is inserted into the bearing member 14. Even if it is brought into contact with the rim of the shaft hole 15 of A, the hemispherical portion 1
The rotor rotation shaft 5 is smoothly inserted into the shaft hole 15 by being guided by the curved surface 6 (that is, the curved surface inclined with respect to the opposite insertion direction), which greatly contributes to the improvement of the assembly workability. That is, when the rotor rotary shaft 5 is inserted, no force other than the axial direction acts on the bearing member 14.
【0016】本願考案は、上記実施例の構成に限定され
るものではなく、考案の要旨を逸脱しない範囲において
適宜設計変更可能なことは勿論である。The invention of the present application is not limited to the configuration of the above-mentioned embodiment, and it goes without saying that the design can be appropriately changed without departing from the scope of the invention.
【図1】本願考案の実施例にかかる送風機用軸受構造を
示す断面図である。FIG. 1 is a cross-sectional view showing a blower bearing structure according to an embodiment of the present invention.
【図2】図1に示す軸受構造の組立前の状態を示す断面
図である。FIG. 2 is a cross-sectional view showing a state before assembly of the bearing structure shown in FIG.
【図3】一般の天吊型空気調和機の横断面図である。FIG. 3 is a cross-sectional view of a general ceiling-mounted air conditioner.
【図4】従来の送風機用軸受構造の組立前の状態を示す
断面図である。FIG. 4 is a cross-sectional view showing a state before assembly of a conventional blower bearing structure.
2は遠心式送風機、5はロータ回転軸、6は支持板、7
は軸受、13は防振ゴム、14は軸受部材、15は軸
穴、16は半球面部。2 is a centrifugal blower, 5 is a rotor rotating shaft, 6 is a support plate, 7
Is a bearing, 13 is an anti-vibration rubber, 14 is a bearing member, 15 is a shaft hole, and 16 is a hemispherical surface portion.
Claims (1)
(2)におけるロータ回転軸(5)を、支持板(6)に取り付
けられた防振ゴム(13)に被包され且つ球面を介して保
持されている軸受部材(14)に対して回動自在に軸支す
る送風機用軸受構造であって、前記ロータ回転軸(5)の
端部に半球面部(16)を形成するとともに、該半球面部
(16)の半径をA、前記軸受部材(14)の軸穴(1
5)と前記防振ゴム(13)の内周面との段差をBとし
たとき、A>Bとなるように設定したことを特徴とする
送風機用軸受構造。1. A centrifugal blower used for an air conditioner
Rotating the rotor rotation shaft (5) in (2) with respect to the bearing member (14) which is covered by the vibration-proof rubber (13) attached to the support plate (6) and is held via a spherical surface. A bearing structure for a blower that freely supports a shaft, wherein a hemispherical surface portion (16) is formed at an end of the rotor rotation shaft (5), and the hemispherical surface portion is formed.
The radius of (16) is A, and the shaft hole (1
The step between 5) and the inner peripheral surface of the anti-vibration rubber (13) is defined as B
A bearing structure for a blower , wherein A> B when set .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1991002012U JP2501824Y2 (en) | 1991-01-25 | 1991-01-25 | Bearing structure for blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1991002012U JP2501824Y2 (en) | 1991-01-25 | 1991-01-25 | Bearing structure for blower |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0499415U JPH0499415U (en) | 1992-08-27 |
JP2501824Y2 true JP2501824Y2 (en) | 1996-06-19 |
Family
ID=31729833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1991002012U Expired - Lifetime JP2501824Y2 (en) | 1991-01-25 | 1991-01-25 | Bearing structure for blower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2501824Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104712663B (en) * | 2015-03-26 | 2017-10-31 | 广东美的暖通设备有限公司 | Shaft end fixing structure and the air conditioner with it |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6099854U (en) * | 1983-12-14 | 1985-07-08 | マブチモ−タ−株式会社 | Small motor cover plate |
JPS63177319U (en) * | 1987-04-22 | 1988-11-17 |
-
1991
- 1991-01-25 JP JP1991002012U patent/JP2501824Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0499415U (en) | 1992-08-27 |
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