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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |