JP2015173518A - Fan cover for device - Google Patents

Fan cover for device Download PDF

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Publication number
JP2015173518A
JP2015173518A JP2014047486A JP2014047486A JP2015173518A JP 2015173518 A JP2015173518 A JP 2015173518A JP 2014047486 A JP2014047486 A JP 2014047486A JP 2014047486 A JP2014047486 A JP 2014047486A JP 2015173518 A JP2015173518 A JP 2015173518A
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Japan
Prior art keywords
fan cover
cylindrical
cylindrical portion
diameter portion
corner
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JP2014047486A
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Japanese (ja)
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JP6249830B2 (en
Inventor
久輝 松葉
Hisateru Matsuba
久輝 松葉
卓也 永易
Takuya Nagai
卓也 永易
清信 水谷
Kiyonobu Mizutani
清信 水谷
芳賀　卓
Taku Haga
卓 芳賀
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2014047486A priority Critical patent/JP6249830B2/en
Priority to CN201410855221.7A priority patent/CN104917324B/en
Priority to DE102015102348.2A priority patent/DE102015102348B4/en
Publication of JP2015173518A publication Critical patent/JP2015173518A/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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a fan cover a plurality of which is enabled to be preserved while being stacked and to be easily separated after being stacked.SOLUTION: A fan cover 12 includes a first cylindrical part 1 including an opening at a side of a casing (main body) 18 of a motor (device) 14, and a second cylindrical part 2 which is connected to the first cylindrical part 1. An outer diameter of the second cylindrical part 2 is smaller than an inner diameter of the first cylindrical part 1, and an inner peripheral shape of the first cylindrical part 1 and an outer peripheral shape of the second cylindrical part 2 are non-similar shapes.

Description

本発明は、装置のファンカバーに関する。   The present invention relates to a fan cover of an apparatus.

特許文献１に、モータの本体側に開口する筒状部を備えたモータのファンカバーが開示されている。このファンカバーは、筒状部の反モータ側に傾斜面部を有している。そして、この傾斜面部を利用して、一方のファンカバーで他方のファンカバーの傾斜面部を覆うことにより、該ファンカバーの積み重ね（積み重ねた状態での保管）を可能としている。   Patent Document 1 discloses a fan cover for a motor provided with a cylindrical portion that opens on the main body side of the motor. This fan cover has an inclined surface portion on the side opposite to the motor of the cylindrical portion. Then, by using the inclined surface portion to cover the inclined surface portion of the other fan cover with one fan cover, the fan covers can be stacked (stored in a stacked state).

特開２０１０−１２４５３４号公報（段落［００１７］）JP 2010-124534 A (paragraph [0017])

しかしながら、この特許文献１に開示されたファンカバーにおいては、積み重ねた後に個々のファンカバーが分離しにくくなることがあるという問題があった。   However, the fan cover disclosed in Patent Document 1 has a problem that individual fan covers may be difficult to separate after being stacked.

本発明は、このような従来の問題を解消するためになされたものであって、複数積み重ねて保管することが可能で、かつ積み重ねた後の分離が容易なファンカバーを提供することをその課題としている。   The present invention has been made to solve such conventional problems, and it is an object of the present invention to provide a fan cover that can be stored in a plurality of stacks and that can be easily separated after stacking. It is said.

本発明は、装置の本体側に開口部を有する第１筒状部と、該第１筒状部に接続される第２筒状部と、を備えるファンカバーであって、前記第２筒状部の外径は、前記第１筒状部の内径よりも小さく、前記第１筒状部の内周形状と前記第２筒状部の外周形状が非相似形とされた構成とすることにより、上記課題を解決したものである。   The present invention is a fan cover comprising a first tubular part having an opening on the main body side of the apparatus, and a second tubular part connected to the first tubular part, wherein the second tubular part is provided. The outer diameter of the portion is smaller than the inner diameter of the first cylindrical portion, and the inner peripheral shape of the first cylindrical portion and the outer peripheral shape of the second cylindrical portion are configured to be non-similar. The above-mentioned problems are solved.

本発明に係るファンカバーは、本体側に開口部を有する第１筒状部の内径よりも小さな外径を有する第２筒状部を備えているため、下段のファンカバーの小さな径の第２筒状部に、上段のファンカバーの大きな径の第１筒状部が重なる態様で、複数のファンカバーを積み重ねることができる。   Since the fan cover according to the present invention includes the second cylindrical portion having an outer diameter smaller than the inner diameter of the first cylindrical portion having the opening on the main body side, the second fan cover having a smaller diameter than the lower fan cover. A plurality of fan covers can be stacked in such a manner that the first cylindrical portion with the large diameter of the upper fan cover overlaps the cylindrical portion.

また、第１筒状部の内周形状と第２筒状部の外周形状が非相似形、つまり大きさだけでなく形状そのものが異なるように構成されているため、上段に積み重ねられたファンカバーの内周が下段に位置するファンカバーの外周に強く係合して分離が困難になってしまう不具合が発生しにくく、個々のファンカバーの分離が容易である。   In addition, since the inner peripheral shape of the first cylindrical portion and the outer peripheral shape of the second cylindrical portion are non-similar, that is, not only the size but also the shape itself is different, the fan cover stacked in the upper stage The inner periphery of the fan cover is strongly engaged with the outer periphery of the fan cover located at the lower stage, so that it becomes difficult to separate the fan cover, and the individual fan covers can be easily separated.

本発明によれば、複数積み重ねて保管することが可能で、かつ積み重ねた後の分離が容易なファンカバーが得られる。   According to the present invention, it is possible to obtain a fan cover that can be stacked and stored and can be easily separated after being stacked.

本発明の実施形態の一例に係るモータのファンカバーを異なる２つの角度から描写した斜視図The perspective view which described the fan cover of the motor which concerns on an example of embodiment of this invention from two different angles 図１のファンカバーの６面図6 views of the fan cover of FIG. 図２の（Ａ）、（Ｂ）の拡大図Enlarged view of (A) and (B) of FIG. 上記ファンカバーを、モータに取り付けた状態を示す全体側面図Overall side view showing the fan cover attached to the motor 図４の矢視Ｖ−Ｖ線に沿う断面図Sectional drawing which follows the arrow VV line of FIG. 上記ファンカバーを２段に積み重ねたときの、（Ａ）は、図３（Ｂ）の矢視ＶＩＡ−ＶＩＡ線に沿う概略断面図、（Ｂ）は、図３（Ｂ）の矢視ＶＩＢ−ＶＩＢ線に沿う概略断面図When the fan covers are stacked in two stages, (A) is a schematic cross-sectional view taken along line VIA-VIA in FIG. 3 (B), and (B) is view VIB- in FIG. 3 (B). Schematic cross section along line VIB モータに付設されたブレーキ機構の手動解放レバーを示す正面図Front view showing the manual release lever of the brake mechanism attached to the motor

以下、図面に基づいて本発明の実施形態の一例を詳細に説明する。   Hereinafter, an example of an embodiment of the present invention will be described in detail based on the drawings.

図４は、本発明の実施形態の一例に係るファンカバーを、モータに取り付けた状態を示す全体側面図、図５は、図４の矢視Ｖ−Ｖ線に沿う断面図である。   4 is an overall side view showing a state in which a fan cover according to an example of an embodiment of the present invention is attached to a motor, and FIG. 5 is a cross-sectional view taken along the line VV in FIG.

図４に示されるように、このファンカバー１２は、モータ（装置）１４に取り付けられた図示せぬファンを覆うために、該モータ１４のケーシング（本体）１８に装着される。符号１６は、ファンカバー１２をモータ１４のケーシング１８に装着するためのボルト孔である（ボルトは図示略）。   As shown in FIG. 4, the fan cover 12 is attached to a casing (main body) 18 of the motor 14 in order to cover a fan (not shown) attached to the motor (device) 14. Reference numeral 16 denotes a bolt hole for mounting the fan cover 12 on the casing 18 of the motor 14 (the bolt is not shown).

図５に示されるように、モータ１４のケーシング１８は、断面が円形の筒状に形成されている。しかしながら、該ケーシング１８の外周に形成されている複数のフィン２０は、ケーシング１８の径方向にではなく、互いに直角に交差する２つの方向（図５の紙面上で、上下方向Ｇおよび左右方向Ｈ）に突出形成されている。また、各々のフィン２０の先端が、軸直角断面（図５の断面）が正方形９０の４隅を丸めた形状となるように、個々のフィン２０の長さが設定されている。便宜上、以降、この正方形９０の４隅を丸めた形状を、「フィン先端正方形９０」、該フィン先端正方形９０の４隅の部分を「角部９１」、辺の部分を「側面９２」と称する。なお、角部９１が丸められた部分の曲率半径はｒ９１である。   As shown in FIG. 5, the casing 18 of the motor 14 is formed in a cylindrical shape with a circular cross section. However, the plurality of fins 20 formed on the outer periphery of the casing 18 are not in the radial direction of the casing 18 but in two directions intersecting at right angles to each other (on the paper surface of FIG. ) Protruding. Further, the length of each fin 20 is set so that the tip of each fin 20 has a shape obtained by rounding the four corners of a square 90 in a cross section perpendicular to the axis (cross section in FIG. 5). For convenience, the shape obtained by rounding the four corners of the square 90 is hereinafter referred to as “fin tip square 90”, the four corner portions of the fin tip square 90 are referred to as “corner portions 91”, and the side portions are referred to as “side surfaces 92”. . The radius of curvature of the portion where the corner 91 is rounded is r91.

以下、当該ファンカバー１２の具体的な構成について詳細に説明する。   Hereinafter, a specific configuration of the fan cover 12 will be described in detail.

図１は、本発明の実施形態の一例に係るモータ１４のファンカバー１２を異なる２つの角度から描写した斜視図、図２は、図１のファンカバー１２の６面図である。なお、図２の（Ａ）、（Ｂ）を図３で拡大して取り出している。   FIG. 1 is a perspective view depicting a fan cover 12 of a motor 14 according to an example of an embodiment of the present invention from two different angles, and FIG. 2 is a six-face view of the fan cover 12 of FIG. 2A and 2B are enlarged and taken out in FIG.

ファンカバー１２は、モータ（装置）１４のケーシング（本体）１８側に本体側開口部３５を有する第１筒状部１と、該第１筒状部１に接続される第２筒状部２と、を備えている。図２（Ｂ）および図３（Ｂ）は、ファンカバー１２を反モータ側からみた正面図であり、両図において描写されている２つの実線のうち、外側が第１筒状部１、内側が第２筒状部２に相当している。   The fan cover 12 includes a first cylindrical part 1 having a main body side opening 35 on a casing (main body) 18 side of a motor (device) 14 and a second cylindrical part 2 connected to the first cylindrical part 1. And. 2 (B) and 3 (B) are front views of the fan cover 12 as viewed from the side opposite to the motor, and of the two solid lines depicted in both drawings, the outer side is the first tubular portion 1 and the inner side. Corresponds to the second cylindrical portion 2.

第１筒状部１の本体側開口部３５の形状は、前記フィン先端正方形９０に対応した形状、つまり「正方形９０の４隅（角部９１）を丸めた形状」とされている。   The shape of the main body side opening 35 of the first tubular portion 1 is a shape corresponding to the fin tip square 90, that is, “a shape obtained by rounding four corners (corner portions 91) of the square 90”.

この実施形態では、第２筒状部２の外径が、第１筒状部１の内径よりも小さく形成されている。なお、「第２筒状部２の外径が、第１筒状部１の内径よりも小さい」とは、第２筒状部２の外径と、第１筒状部１の内径が等しい場合を含む。つまり、「第２筒状部２の外径が、第１筒状部１の内径以下」を意味している。なお、本実施形態で「外径」あるいは「内径」と称するときは、ファンカバー１２の軸心Ｏ１２からの距離の２倍を意味している。「第２筒状部２の外径が、第１筒状部１の内径よりも小さい」という構成の具体的意義については、後に詳しく触れる。   In this embodiment, the outer diameter of the second cylindrical portion 2 is smaller than the inner diameter of the first cylindrical portion 1. Note that “the outer diameter of the second cylindrical portion 2 is smaller than the inner diameter of the first cylindrical portion 1” means that the outer diameter of the second cylindrical portion 2 is equal to the inner diameter of the first cylindrical portion 1. Including cases. That is, it means “the outer diameter of the second cylindrical portion 2 is equal to or smaller than the inner diameter of the first cylindrical portion 1”. In the present embodiment, the term “outer diameter” or “inner diameter” means twice the distance of the fan cover 12 from the axis O12. The specific significance of the configuration that “the outer diameter of the second cylindrical portion 2 is smaller than the inner diameter of the first cylindrical portion 1” will be described in detail later.

ファンカバー１２は、第１筒状部１と第２筒状部２を接続する接続部５０を備えている。接続部５０は、軸方向Ｘに対して傾斜している。具体的には、接続部５０は、第１筒状部１から第２筒状部２に向かうに従って、外径ｄ５０が小さくなるように傾斜している。   The fan cover 12 includes a connection portion 50 that connects the first tubular portion 1 and the second tubular portion 2. The connecting portion 50 is inclined with respect to the axial direction X. Specifically, the connecting portion 50 is inclined so that the outer diameter d50 becomes smaller from the first tubular portion 1 toward the second tubular portion 2.

傾斜の勾配は、後述する第１角部対応部１Ｃの周方向中心と第２角部対応部２Ｃの周方向中心を結んだＴｃ方向が最も急であり、また、第１側面対応部１Ｓの周方向中心と第２側面対応部２Ｓの周方向中心を結んだＴｓ方向が最も緩くなっている。すなわち、接続部５０の傾斜の勾配は、周方向で均一ではない。   The gradient of the inclination is steep in the Tc direction connecting the circumferential center of the first corner corresponding portion 1C described later and the circumferential center of the second corner corresponding portion 2C. The Ts direction connecting the center in the circumferential direction and the center in the circumferential direction of the second side surface corresponding part 2S is the loosest. That is, the gradient of the inclination of the connecting portion 50 is not uniform in the circumferential direction.

ファンカバー１２の第１筒状部１は、無限大以外の（つまり有限の）第１小曲率半径ｒ１Ｃを有する第１角部対応部（第１小径部）１Ｃを備える。また、第２筒状部２は、該第１角部対応部１Ｃに対応する無限大以外の第２小曲率半径ｒ２Ｃを有する第２角部対応部（第２小径部）２Ｃを備える。   The first tubular portion 1 of the fan cover 12 includes a first corner corresponding portion (first small diameter portion) 1C having a first small curvature radius r1C other than infinity (that is, finite). The second cylindrical portion 2 includes a second corner corresponding portion (second small diameter portion) 2C having a second small radius of curvature r2C other than infinity corresponding to the first corner corresponding portion 1C.

具体的には、第１筒状部１の第１角部対応部１Ｃは、モータ１４のケーシング１８のフィン先端正方形９０の「角部９１」を丸めた部分の位置および形状に対応している。第１角部対応部１Ｃは、第１筒状部１の４ヶ所に形成されており、第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃは、フィン先端正方形９０の「角部９１」を丸めた部分の曲率半径ｒ９１とほぼ（あるいは全く）同一である（ｒ１Ｃ≒ｒ９１）。第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃは、有限であり、第１角部対応部１Ｃは、曲面で構成されている。   Specifically, the first corner corresponding portion 1 </ b> C of the first cylindrical portion 1 corresponds to the position and shape of the rounded portion of the “corner portion 91” of the fin tip square 90 of the casing 18 of the motor 14. . The first corner corresponding portion 1C is formed at four locations of the first cylindrical portion 1, and the first small radius of curvature r1C of the first corner corresponding portion 1C is the “corner portion 91” of the fin tip square 90. Is substantially (or completely) the same as the radius of curvature r91 of the rounded portion (r1C≈r91). The first small curvature radius r1C of the first corner corresponding portion 1C is finite, and the first corner corresponding portion 1C is configured by a curved surface.

第１角部対応部１Ｃの周方向の形成範囲は、ファンカバー１２の軸心Ｏ１２の中心角に換算してθ１Ｃである。また、第１角部対応部１Ｃの周方向長さは、Ｌ１Ｃである。   The formation range in the circumferential direction of the first corner corresponding portion 1C is θ1C in terms of the central angle of the axis O12 of the fan cover 12. In addition, the circumferential length of the first corner corresponding portion 1C is L1C.

一方、第２筒状部２の第２角部対応部２Ｃは、第１筒状部１の第１角部対応部１Ｃに対応して、軸方向に沿って並んで形成されている。第２角部対応部２Ｃの第２小曲率半径は、ｒ２Ｃであり、第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃよりも小さい（ｒ２Ｃ＜ｒ１Ｃ）。この実施形態では、第２角部対応部２Ｃの第２小曲率半径ｒ２Ｃの中心は、第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃの中心と同一である（共に、ファンカバー１２の軸心Ｏ１２）。すなわち、第１角部対応部１Ｃと第２角部対応部２Ｃとを比較すると、第２角部対応部２Ｃの外径の方が第１角部対応部１Ｃの内径よりも小さい。   On the other hand, the 2nd corner | angular part corresponding | compatible part 2C of the 2nd cylindrical part 2 is formed along with the axial direction corresponding to the 1st corner | angular part corresponding | compatible part 1C of the 1st cylindrical part 1. FIG. The second small curvature radius of the second corner corresponding portion 2C is r2C, which is smaller than the first small curvature radius r1C of the first corner corresponding portion 1C (r2C <r1C). In this embodiment, the center of the second small curvature radius r2C of the second corner corresponding portion 2C is the same as the center of the first small curvature radius r1C of the first corner corresponding portion 1C (both of the fan cover 12). Axis O12). That is, when the first corner corresponding portion 1C and the second corner corresponding portion 2C are compared, the outer diameter of the second corner corresponding portion 2C is smaller than the inner diameter of the first corner corresponding portion 1C.

このファンカバー１２は、全体がほぼ均一の厚さ（肉厚）を有する部材で構成されている。つまり、第１筒状部１の内周形状と外周形状は相似形である。第２筒状部２の内周形状と外周形状も相似形である。また、接続部５０の内周形状と外周形状も相似形である。したがって（第２小曲率半径ｒ２Ｃ＜第１小曲率半径ｒ１Ｃ）であるというのは、本実施形態では、第１筒状部１の内周形状と第２筒状部２の外周形状は、非相似形となっているということである。   The fan cover 12 is formed of a member having a substantially uniform thickness (wall thickness) as a whole. That is, the inner peripheral shape and the outer peripheral shape of the first cylindrical portion 1 are similar. The inner peripheral shape and the outer peripheral shape of the second cylindrical part 2 are also similar. Moreover, the inner peripheral shape and outer peripheral shape of the connection part 50 are also similar. Therefore, (second small radius of curvature r2C <first small radius of curvature r1C) means that in this embodiment, the inner peripheral shape of the first cylindrical portion 1 and the outer peripheral shape of the second cylindrical portion 2 are non- It is a similar shape.

第２角部対応部２Ｃの周方向の形成範囲は、ファンカバー１２の軸心Ｏ１２の中心角に換算してθ２Ｃであり、第２角部対応部２Ｃの周方向の形成範囲θ２Ｃの方が、第１角部対応部１Ｃの周方向の形成範囲θ１Ｃよりも広い（θ２Ｃ＞θ１Ｃ）。また、第２角部対応部２Ｃの周方向長さは、Ｌ２Ｃであり、該第２角部対応部２Ｃの周方向長さＬ２Ｃの方が、第１角部対応部１Ｃの周方向長さＬ１Ｃよりも大きい（Ｌ２Ｃ＞Ｌ１Ｃ）。   The circumferential formation range of the second corner corresponding portion 2C is θ2C in terms of the central angle of the axis O12 of the fan cover 12, and the circumferential formation range θ2C of the second corner corresponding portion 2C is more. , Wider than the formation range θ1C in the circumferential direction of the first corner corresponding portion 1C (θ2C> θ1C). The circumferential length of the second corner corresponding portion 2C is L2C, and the circumferential length L2C of the second corner corresponding portion 2C is the circumferential length of the first corner corresponding portion 1C. Larger than L1C (L2C> L1C).

また、ファンカバー１２の第１筒状部１は、前記第１角部対応部（第１小径部）１Ｃのほか、該第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃよりも大きい第１大曲率半径ｒ１Ｓを有する第１側面対応部（第１大径部）１Ｓを備える。一方、第２筒状部２は、前記第２角部対応部（第２小径部）２Ｃのほか、該第２角部対応部２Ｃの第２小曲率半径ｒ２Ｃよりも大きい第２大曲率半径ｒ２Ｓを有する第２側面対応部（第２大径部）２Ｓを備える。   The first cylindrical portion 1 of the fan cover 12 has a first radius of curvature r1C larger than the first corner corresponding portion (first small diameter portion) 1C and the first small radius of curvature r1C of the first corner corresponding portion 1C. A first side surface corresponding portion (first large diameter portion) 1S having one large curvature radius r1S is provided. On the other hand, in addition to the second corner corresponding portion (second small diameter portion) 2C, the second cylindrical portion 2 has a second large radius of curvature larger than the second small radius of curvature r2C of the second corner corresponding portion 2C. A second side surface corresponding part (second large diameter part) 2S having r2S is provided.

具体的には、第１筒状部１の第１側面対応部１Ｓは、モータ１４のケーシング１８のフィン先端正方形９０の「側面（正方形９０の辺の部分）９２」の曲率半径に対応しており、第１筒状部１の４ヶ所（各第１角部対応部１Ｃの間）に形成されている。フィン先端正方形９０の「側面９２」は、平面（曲率半径が無限大）で構成されていることから、該第１側面対応部１Ｓも平面で構成されている。   Specifically, the first side surface corresponding portion 1S of the first cylindrical portion 1 corresponds to the curvature radius of the “side surface (side portion of the square 90) 92” of the fin tip square 90 of the casing 18 of the motor 14. And formed at four locations (between each first corner portion corresponding portion 1C) of the first cylindrical portion 1. Since the “side surface 92” of the fin tip square 90 is configured as a plane (the radius of curvature is infinite), the first side surface corresponding portion 1S is also configured as a plane.

つまり、第１側面対応部１Ｓの第１大曲率半径ｒ１Ｓは、無限大であり、第１筒状部１は、第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃよりも大きい第１大曲率半径ｒ１Ｓを有する第１側面対応部１Ｓを備えていることになる。   That is, the first large radius of curvature r1S of the first side surface corresponding portion 1S is infinite, and the first cylindrical portion 1 has a first large value larger than the first small curvature radius r1C of the first corner portion corresponding portion 1C. The first side surface corresponding portion 1S having the curvature radius r1S is provided.

第１側面対応部１Ｓの周方向の形成範囲は、ファンカバー１２の軸心Ｏ１２の中心角に換算してθ１Ｓである。第１側面対応部１Ｓの周方向長さは、Ｌ１Ｓである。   The formation range in the circumferential direction of the first side surface corresponding portion 1S is θ1S in terms of the central angle of the axis O12 of the fan cover 12. The circumferential length of the first side surface corresponding part 1S is L1S.

なお、第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃの中心、および第２角部対応部２Ｃの第２小曲率半径ｒ２Ｃの中心は、ファンカバー１２の軸心Ｏ１２と一致している。しかし、第１側面対応部１Ｓの第１大曲率半径ｒ１Ｓの中心、および第２大曲率半径ｒ２Ｓの中心は、無限遠にあり、該ファンカバー１２の軸心Ｏ１２とは一致していない。   The center of the first small curvature radius r1C of the first corner corresponding portion 1C and the center of the second small curvature radius r2C of the second corner corresponding portion 2C coincide with the axis O12 of the fan cover 12. . However, the center of the first large radius of curvature r1S and the center of the second large radius of curvature r2S of the first side surface corresponding portion 1S are at infinity and do not coincide with the axis O12 of the fan cover 12.

一方、第２側面対応部２Ｓは、第１筒状部１の第１側面対応部１Ｓに対応しており、４ヶ所（各第２角部対応部２Ｃの間）に形成されている。この実施形態では、第１筒状部１の第１側面対応部１Ｓが平面（曲率半径が無限大）に設定されていることから、第２筒状部２の第２側面対応部２Ｓも、平面で構成されている。つまり、第２側面対応部２Ｓの第２大曲率半径ｒ２Ｓは、無限大であり、第２筒状部２は、第２角部対応部２Ｃの第２小曲率半径ｒ２Ｃよりも大きい第２大曲率半径ｒ２Ｓを有する第２側面対応部２Ｓを備えていることになる。   On the other hand, the 2nd side surface corresponding part 2S respond | corresponds to the 1st side surface corresponding part 1S of the 1st cylindrical part 1, and is formed in four places (between each 2nd corner | angular part corresponding part 2C). In this embodiment, since the 1st side surface corresponding part 1S of the 1st cylindrical part 1 is set to the plane (the curvature radius is infinite), the 2nd side surface corresponding part 2S of the 2nd cylindrical part 2 is also It consists of a plane. That is, the second large radius of curvature r2S of the second side surface corresponding portion 2S is infinite, and the second cylindrical portion 2 is a second large radius greater than the second small curvature radius r2C of the second corner portion corresponding portion 2C. The second side surface corresponding portion 2S having the curvature radius r2S is provided.

なお、この実施形態では、第１側面対応部１Ｓと第２側面対応部２Ｓは、丁度、ファンカバー１２の肉厚相当分だけ、第１側面対応部１Ｓの方が、軸心Ｏ１２から見て外側に位置している。つまり、ファンカバー１２の同一の周方向位置においては、第１側面対応部（第１大径部）１Ｓの内径（軸心Ｏ１２から第１側面対応部１Ｓの内周までの距離）Ｄ１Ｓが、第２側面対応部（第２大径部）２Ｓの外径（軸心Ｏ１２から第２側面対応部２Ｓの外周までの距離）ｄ２Ｓと同一である。   In this embodiment, the first side surface corresponding part 1S and the second side surface corresponding part 2S are just as much as the thickness of the fan cover 12, and the first side surface corresponding part 1S is viewed from the axis O12. Located on the outside. That is, at the same circumferential position of the fan cover 12, the inner diameter (distance from the axis O12 to the inner periphery of the first side surface corresponding portion 1S) D1S of the first side surface corresponding portion (first large diameter portion) 1S is: It is the same as the outer diameter (distance from the axis O12 to the outer periphery of the second side surface corresponding part 2S) d2S of the second side surface corresponding part (second large diameter part) 2S.

これは、見方を変えると、同一の周方向位置において軸方向に沿って並んで形成されている第１側面対応部１Ｓと第２側面対応部２Ｓとを比較すると、第２側面対応部２Ｓの外径の方が第１側面対応部１Ｓの外径よりも小さいということでもある。   In other words, when comparing the first side surface corresponding part 1S and the second side surface corresponding part 2S formed side by side along the axial direction at the same circumferential position, the second side surface corresponding part 2S is compared. This also means that the outer diameter is smaller than the outer diameter of the first side surface corresponding portion 1S.

第２側面対応部２Ｓの周方向の形成範囲は、ファンカバー１２の軸心Ｏ１２の中心角に換算してθ２Ｓである。また、第２側面対応部２Ｓの周方向長さは、Ｌ２Ｓである。   The formation range in the circumferential direction of the second side surface corresponding part 2S is θ2S in terms of the central angle of the axis O12 of the fan cover 12. The circumferential length of the second side surface corresponding part 2S is L2S.

ここで、「第２筒状部の外径が、第１筒状部の内径よりも小さい」という構成について説明する。   Here, a configuration in which “the outer diameter of the second cylindrical portion is smaller than the inner diameter of the first cylindrical portion” will be described.

本実施形態では、既に説明したように、第１筒状部１および第２筒状部２とも断面が円形ではないので外径は周方向位置によって異なる。しかし、同一の周方向位置において軸方向に沿って並んで形成されている第１角部対応部１Ｃと第２角部対応部２Ｃとを比較すると、第２角部対応部２Ｃの外径の方が第１角部対応部１Ｃの内径よりも小さい（以下の概念を含む）。また、同一の周方向位置において軸方向に沿って並んで形成されている第１側面対応部１Ｓと第２側面対応部２Ｓとを比較した場合も、第２側面対応部２Ｓの外径の方が第１側面対応部１Ｓの内径よりも小さい。すなわち、同一の周方向位置において軸方向に沿って第２筒状部２の外径と、第１筒状部１の内径を比較すると、第２筒状部２の外径が、第１筒状部１の内径よりも小さい。   In the present embodiment, as already described, since the cross sections of both the first cylindrical portion 1 and the second cylindrical portion 2 are not circular, the outer diameter differs depending on the circumferential position. However, when comparing the first corner corresponding portion 1C and the second corner corresponding portion 2C formed side by side along the axial direction at the same circumferential position, the outer diameter of the second corner corresponding portion 2C is compared. Is smaller than the inner diameter of the first corner portion corresponding portion 1C (including the following concept). Also, when comparing the first side surface corresponding part 1S and the second side surface corresponding part 2S formed side by side along the axial direction at the same circumferential position, the outer diameter of the second side surface corresponding part 2S Is smaller than the inner diameter of the first side surface corresponding portion 1S. That is, when the outer diameter of the second cylindrical portion 2 and the inner diameter of the first cylindrical portion 1 are compared along the axial direction at the same circumferential position, the outer diameter of the second cylindrical portion 2 is the first cylinder. Smaller than the inner diameter of the shaped part 1.

本実施形態では、このように、同一の周方向位置において軸方向に沿って第２筒状部２と、第１筒状部１とを比較したときに、「第２筒状部の外径が、第１筒状部の内径よりも小さい」という構成を有し、ファンカバー１２の「軸方向の積み重ね」を実現している。   In the present embodiment, when the second cylindrical portion 2 and the first cylindrical portion 1 are compared along the axial direction at the same circumferential position in this way, “the outer diameter of the second cylindrical portion” However, it is smaller than the inner diameter of the first tubular portion, and the “axial stacking” of the fan cover 12 is realized.

なお、この実施形態では、第１筒状部１では（曲率半径ｒ１Ｓが大きい）第１側面対応部１Ｓの周方向長さＬ１Ｓの方が、（曲率半径ｒ１Ｃが小さい）第１角部対応部１Ｃの周方向長さＬ１Ｃよりも大きい（Ｌ１Ｓ＞Ｌ１Ｃ）。   In this embodiment, in the first cylindrical portion 1, the circumferential length L1S of the first side surface corresponding portion 1S (larger curvature radius r1S) is the first corner corresponding portion (smaller curvature radius r1C). It is larger than the circumferential length L1C of 1C (L1S> L1C).

しかし、第２筒状部２では、（曲率半径ｒ２Ｓが大きい）第２側面対応部２Ｓの周方向長さＬ２Ｓの方が、（曲率半径ｒ２Ｃが小さい）第２角部対応部２Ｃの周方向長さＬ２Ｃよりも小さい（Ｌ２Ｓ＜Ｌ２Ｃ）。   However, in the second cylindrical portion 2, the circumferential length L2S of the second side surface corresponding portion 2S (larger curvature radius r2S) is circumferential in the second corner corresponding portion 2C (smaller curvature radius r2C). It is smaller than the length L2C (L2S <L2C).

要するならば、第１筒状部１では、全周に対して、曲率半径ｒ１Ｓの大きい第１側面対応部１Ｓの周方向長さＬ１Ｓが占める割合が大きく、第１筒状部１は、多角形（この例では正方形）に近い形状に形成されている。逆に、第２筒状部２では、該第２筒状部２の全周に対して、曲率半径ｒ２Ｓの大きい第２側面対応部２Ｓの占める割合が小さく、第１筒状部１と比較して、より円形に近い形状に形成されている。   In short, in the first cylindrical portion 1, the ratio of the circumferential length L1S of the first side surface corresponding portion 1S having a large curvature radius r1S to the entire circumference is large, and the first cylindrical portion 1 has many It is formed in a shape close to a square (in this example, a square). On the other hand, in the second cylindrical portion 2, the ratio of the second side surface corresponding portion 2 </ b> S having a large curvature radius r <b> 2S to the entire circumference of the second cylindrical portion 2 is small, and compared with the first cylindrical portion 1. And it is formed in a shape closer to a circle.

なお、この実施形態では、第２筒状部２の第２角部対応部２Ｃに、モータ１４の部品（具体的には、後述するブレーキ機構の部品）が挿通される挿通孔６０が形成されている。   In this embodiment, an insertion hole 60 through which a component of the motor 14 (specifically, a component of a brake mechanism to be described later) is formed in the second corner corresponding portion 2C of the second cylindrical portion 2 is formed. ing.

この挿通孔６０は、使用されないときには封止部材（グロメット：図示略）が装着される場合がある。この場合の「第２角部対応部２Ｃに形成」は、挿通孔６０の「全体」が第２角部対応部２Ｃに形成されていることを意味している。すなわち、例えば、第２角部対応部２Ｃと第２側面対応部２Ｓに跨がって形成される態様は含まない。   When the insertion hole 60 is not used, a sealing member (grommet: not shown) may be attached. In this case, “formed in the second corner corresponding portion 2C” means that “the whole” of the insertion hole 60 is formed in the second corner corresponding portion 2C. That is, for example, the aspect formed over 2nd corner | angular part corresponding | compatible part 2C and 2nd side surface corresponding | compatible part 2S is not included.

また、第２筒状部２の後部（反本体側端部）に、テーパ部４６が設けられている。該テーパ部４６の反本体側開口部４７は、吸気口４８付きの蓋部材４９で閉塞されている。   Further, a tapered portion 46 is provided at the rear portion (the end on the opposite side of the main body) of the second cylindrical portion 2. The non-main body side opening 47 of the tapered portion 46 is closed by a lid member 49 with an air inlet 48.

さらに、この実施形態においては、図７に示されるように、第２筒状部２の内側にモータ１４の図示せぬブレーキ機構が収納されている。このブレーキ機構は、非通電時に制動、通電時に解放となる構成とされている。このようなブレーキ機構では、ファンカバー１２の外周に沿って該ブレーキ機構の操作部材として手動解放レバー６２等が配置されることがある。該手動解放レバー６２を引き上げ操作することにより、（停電時や故障時を含む）ブレーキ機構の非通電時に、手動でブレーキ機構を解放状態とすることが可能である。本実施形態では、この（操作部材である）手動解放レバー６２が、第２筒状部２の外周に沿って配置されている。   Furthermore, in this embodiment, as shown in FIG. 7, a brake mechanism (not shown) of the motor 14 is accommodated inside the second cylindrical portion 2. This brake mechanism is configured to be braked when not energized and released when energized. In such a brake mechanism, a manual release lever 62 or the like may be disposed along the outer periphery of the fan cover 12 as an operation member of the brake mechanism. By pulling up the manual release lever 62, it is possible to manually release the brake mechanism when the brake mechanism is not energized (including when a power failure or failure occurs). In the present embodiment, this manual release lever 62 (which is an operation member) is disposed along the outer periphery of the second cylindrical portion 2.

次に、このファンカバー１２の作用を説明する。   Next, the operation of the fan cover 12 will be described.

このファンカバー１２は、モータ１４のケーシング１８（本体）側に開口部を有する第１筒状部１と該第１筒状部１に接続される第２筒状部２を備え、第２筒状部２の外径は第１筒状部１の内径よりも小さく、かつ、第１筒状部１の内周形状と第２筒状部２の外周形状は非相似形とされている。   The fan cover 12 includes a first cylindrical part 1 having an opening on the casing 18 (main body) side of the motor 14 and a second cylindrical part 2 connected to the first cylindrical part 1, and a second cylinder. The outer diameter of the cylindrical portion 2 is smaller than the inner diameter of the first cylindrical portion 1, and the inner peripheral shape of the first cylindrical portion 1 and the outer peripheral shape of the second cylindrical portion 2 are not similar.

このため、図６に示されるように、下段のファンカバー１２の第２筒状部２に上段のファンカバー１２の第１筒状部１が重なる態様で、複数のファンカバー１２を重ねて保管することができる。   For this reason, as shown in FIG. 6, the plurality of fan covers 12 are stored in such a manner that the first tubular portion 1 of the upper fan cover 12 overlaps the second tubular portion 2 of the lower fan cover 12. can do.

また、多数のファンカバー１２を重ねても、第１筒状部１の内周形状と第２筒状部２の外周形状が非相似形とされていることから、（第１筒状部１の内周形状と第２筒状部２の外周形状が相似形とされている場合と比較して）上段のファンカバー１２の自重によって下段のファンカバー１２が強く押し付けられて分離しにくくなる不具合を軽減することができる。   In addition, even when a large number of fan covers 12 are stacked, the inner peripheral shape of the first cylindrical portion 1 and the outer peripheral shape of the second cylindrical portion 2 are not similar to each other (the first cylindrical portion 1 In comparison with the case where the inner peripheral shape of the second cylindrical portion 2 and the outer peripheral shape of the second cylindrical portion 2 are similar to each other). Can be reduced.

また、第２筒状部２が第１筒状部１と非相似形で、かつ第２筒状部２の外径が第１筒状部１の内径よりも小さく形成されているため、第１筒状部１の一部（この例では、第１角部対応部１Ｃが第２角部対応部２Ｃよりも大きく形成されている部分）に、手を掛けることで、上段のファンカバー１２を容易に分離することができる。   Further, since the second cylindrical part 2 is not similar to the first cylindrical part 1 and the outer diameter of the second cylindrical part 2 is smaller than the inner diameter of the first cylindrical part 1, By placing a hand on a part of the cylindrical portion 1 (in this example, the portion where the first corner corresponding portion 1C is formed larger than the second corner corresponding portion 2C), the upper fan cover 12 is placed. Can be easily separated.

また、ファンカバー１２は、形状や寸法の異なる第１、第２筒状部１、２を有しているため、ファンカバー１２全体の剛性が高く、共振も生じにくい（ファンカバー１２の共振の振幅を小さく抑えることができ、騒音低減効果が得られる）。また、形状や寸法の異なる２つの第１、第２筒状部１、２を組み合わせることで、ファンカバー１２の共振の固有振動数を、より人の耳に聞き取りにくい周波数領域にまで高めることができ、この点でもより騒音を低減する効果が得られる。   Further, since the fan cover 12 has the first and second cylindrical portions 1 and 2 having different shapes and dimensions, the rigidity of the fan cover 12 as a whole is high and resonance does not easily occur (resonance of the fan cover 12). The amplitude can be kept small, and a noise reduction effect is obtained). Further, by combining the two first and second cylindrical portions 1 and 2 having different shapes and dimensions, the natural frequency of resonance of the fan cover 12 can be increased to a frequency region that is more difficult to hear by human ears. In this respect, the effect of reducing noise can be obtained.

なお、本実施形態においては、ファンカバー１２の同一の周方向位置においては、第１側面対応部（第１大径部）１Ｓの内径Ｄ１Ｓが、第２側面対応部（第２大径部）２Ｓの外径ｄ２Ｓと同一に設定されている。すなわち、第１側面対応部１Ｓと第２側面対応部２Ｓは、同一平面上にはなく、第１側面対応部１Ｓの方が、丁度、ファンカバー１２の肉厚相当分だけ、軸心Ｏ１２から見て外側に位置している。   In the present embodiment, at the same circumferential position of the fan cover 12, the inner diameter D1S of the first side surface corresponding portion (first large diameter portion) 1S is the second side surface corresponding portion (second large diameter portion). It is set to be the same as the outer diameter d2S of 2S. That is, the first side surface corresponding portion 1S and the second side surface corresponding portion 2S are not on the same plane, and the first side surface corresponding portion 1S is exactly the same as the thickness of the fan cover 12 from the axis O12. Located on the outside to see.

このように設定することにより、ファンカバー１２を積み重ねたときに、上段のファンカバー１２と下段のファンカバー１２を、ぐらつかせることなく安定して積み重ねることができ、かつ上段のファンカバー１２と下段のファンカバー１２を容易に分離させることができる。   By setting in this way, when the fan cover 12 is stacked, the upper fan cover 12 and the lower fan cover 12 can be stably stacked without wobbling, and the upper fan cover 12 and the lower fan cover 12 can be stacked. The fan cover 12 can be easily separated.

なお、第１側面対応部１Ｓの内径Ｄ１Ｓを、第２側面対応部２Ｓの外径ｄ２Ｓよりも、意図的に若干大きく設定してもよい。この場合は、ファンカバー１２を積み重ねたときに、第１側面対応部１Ｓの内周と第２側面対応部２Ｓの外周との間には、（Ｄ１Ｓ−ｄ２Ｓ）に相当する隙間が生じるようになる。このため、ファンカバー１２を積み重ねたり分離したりするときの抵抗（第１側面対応部１Ｓの内周と第２側面対応部２Ｓの外周との間に発生する摩擦）をほぼ零にすることができ、該ファンカバー１２同士の積み重ねおよび分離を、より容易に行うことができる。   The inner diameter D1S of the first side surface corresponding part 1S may be intentionally set slightly larger than the outer diameter d2S of the second side surface corresponding part 2S. In this case, when the fan cover 12 is stacked, a gap corresponding to (D1S-d2S) is generated between the inner periphery of the first side surface corresponding portion 1S and the outer periphery of the second side surface corresponding portion 2S. Become. For this reason, the resistance (friction generated between the inner periphery of the first side surface corresponding portion 1S and the outer periphery of the second side surface corresponding portion 2S) when the fan cover 12 is stacked or separated can be made substantially zero. The fan covers 12 can be stacked and separated more easily.

逆に、第２側面対応部２Ｓの外径ｄ２Ｓを、第１側面対応部１Ｓの内径Ｄ１Ｓよりも、意図的に若干大きく設定した場合（あるいは、ばらつきによって、結果として若干大きく製造されてしまった場合）は、上下のファンカバー１２は、第１側面対応部１Ｓと第２側面対応部２Ｓとの間において若干の弾性変形を伴って積み重ねられることになる。このため、よりぐらつくことなく、より高い高さにまで安定してファンカバー１２を多段に積み重ねることができるようになる。しかし、第２側面対応部２Ｓの外径ｄ２Ｓを、第１側面対応部１Ｓの内径Ｄ１Ｓよりあまり大きく設定すると、積み重ね自体が困難となるため、好ましくは、「第２側面対応部２Ｓの外径が、第１側面対応部１Ｓの外径よりも小さい」という関係は維持すべきである。   On the contrary, when the outer diameter d2S of the second side surface corresponding part 2S is intentionally set slightly larger than the inner diameter D1S of the first side surface corresponding part 1S (or, as a result, it has been manufactured slightly larger due to variations). In this case, the upper and lower fan covers 12 are stacked with some elastic deformation between the first side surface corresponding part 1S and the second side surface corresponding part 2S. For this reason, it becomes possible to stack the fan covers 12 in multiple stages stably to a higher height without wobbling. However, if the outer diameter d2S of the second side surface corresponding portion 2S is set to be much larger than the inner diameter D1S of the first side surface corresponding portion 1S, stacking itself becomes difficult. Should be smaller than the outer diameter of the first side surface corresponding part 1S ".

この定性的傾向は、第１側面対応部（第１大径部）１Ｓと第２側面対応部（第２大径部）２Ｓが、本実施形態のように平面ではなく、有限の曲率半径を有する曲面で構成されている場合も、同様に言い得る。   This qualitative tendency is that the first side surface corresponding portion (first large diameter portion) 1S and the second side surface corresponding portion (second large diameter portion) 2S are not flat surfaces as in this embodiment, but have a finite radius of curvature. The same can be said for the case of a curved surface.

さらに、本実施形態では、第１筒状部１と第２筒状部２を接続する接続部５０を備え、該接続部５０が、軸方向に対して傾斜している。このため、積み重ねるときの、下段のファンカバー１２と上段のファンカバー１２との位置合わせが容易である。   Furthermore, in this embodiment, the connection part 50 which connects the 1st cylindrical part 1 and the 2nd cylindrical part 2 is provided, and this connection part 50 inclines with respect to an axial direction. For this reason, it is easy to align the lower fan cover 12 and the upper fan cover 12 when stacked.

また、この実施形態では、第１筒状部１は、第１小曲率半径ｒ１Ｃを有する第１角部対応部（第１小径部）１Ｃを備え、一方、第２筒状部２は、該第１角部対応部１Ｃに対応する第２小曲率半径ｒ２Ｃを有する第２角部対応部（第２小径部）２Ｃを備え、かつ、第２角部対応部２Ｃが、第１角部対応部１Ｃよりも周方向の形成範囲が広い。   In this embodiment, the first cylindrical portion 1 includes a first corner corresponding portion (first small diameter portion) 1C having a first small curvature radius r1C, while the second cylindrical portion 2 A second corner corresponding portion (second small diameter portion) 2C having a second small radius of curvature r2C corresponding to the first corner corresponding portion 1C is provided, and the second corner corresponding portion 2C corresponds to the first corner. The formation range in the circumferential direction is wider than that of the portion 1C.

このため、周方向の形成範囲が狭く曲率半径の大きな第１角部対応部１Ｃが、周方向の形成範囲が広く曲率半径の小さな第２角部対応部２Ｃから、あたかも「取っ手」のように径方向に張り出すため（図６の矢示Ｐ１、Ｐ２部分参照）、ファンカバー１２の取り上げが容易である。   For this reason, the first corner corresponding portion 1C having a narrow circumferential formation range and a large curvature radius is like a “handle” from the second corner corresponding portion 2C having a large circumferential formation range and a small curvature radius. The fan cover 12 can be easily taken up because it projects in the radial direction (see arrows P1 and P2 in FIG. 6).

また、この実施形態では、第１筒状部１は、第１角部対応部１Ｃと、該第１角部対応部１Ｃの第１小曲率半径ｒ１Ｃよりも大きい第１大曲率半径ｒ１Ｓを有する第１側面対応部１Ｓと、を備え、かつ、第２筒状部２は、第２角部対応部２Ｃと、該第２角部対応部２Ｃの第２小曲率半径ｒ２Ｃよりも大きい第２大曲率半径ｒ２Ｓを有する第２側面対応部２Ｓと、を備えている。   In this embodiment, the first tubular portion 1 has a first corner corresponding portion 1C and a first large radius of curvature r1S larger than the first small curvature radius r1C of the first corner corresponding portion 1C. And the second cylindrical portion 2 is a second corner portion corresponding to the second corner portion corresponding portion 2C and a second smaller radius of curvature r2C of the second corner portion corresponding portion 2C. And a second side surface corresponding portion 2S having a large curvature radius r2S.

そのため、第１筒状部１と第２筒状部２は、非相似形ではあるものの、全体としては相似の部分も多いため、積み重ねたときの安定性が高く、外観性（意匠性）もよい。   Therefore, although the 1st cylindrical part 1 and the 2nd cylindrical part 2 are non-similar forms, since there are many similar parts as a whole, they are highly stable when stacked and the appearance (designability) is also good. Good.

また、本実施形態では、第１筒状部１においては、（曲率半径の小さい）第１角部対応部１Ｃの周方向長さＬ１Ｃよりも、（曲率半径の大きい）第１側面対応部１Ｓの周方向長さＬ１Ｓの方が大きく、一方、第２筒状部２においては、（曲率半径の小さい）第２角部対応部２Ｃの周方向長さＬ２Ｃよりも、（曲率半径の大きい）第２側面対応部２Ｓの周方向長さＬ２Ｓの方が小さい。   In the present embodiment, in the first tubular portion 1, the first side surface corresponding portion 1S (having a large curvature radius) is larger than the circumferential length L1C of the first corner corresponding portion 1C (having the small curvature radius). On the other hand, in the second cylindrical portion 2, the circumferential length L1S is larger (the curvature radius is larger) than the circumferential length L2C of the second corner corresponding portion 2C (which has a smaller curvature radius). The circumferential length L2S of the second side surface corresponding part 2S is smaller.

このため、第１筒状部１においては、全周に対して（曲率半径の大きい）第１側面対応部１Ｓの占める部分が多くなるので、第１側面対応部１Ｓが「辺」、第１角部対応部１Ｃが「角」となる多角形により近づき、一方、第２筒状部２においては、全周に対して（曲率半径の小さい）第２角部対応部２Ｃの占める部分が多くなるので、全体がより円形に近づくことになる。したがって、全体形状をコンパクトに維持しながら、「取っ手」となる部分を合理的に径方向に突出・形成させることができる。また、第１筒状部１は、モータ１４のケーシング１８の外形に沿う形になるので、ファンの風を効率よく流すことができる。   For this reason, in the 1st cylindrical part 1, since the part which the 1st side surface corresponding part 1S (large curvature radius) occupies with respect to the perimeter increases, the 1st side surface corresponding part 1S is "side", 1st The corner-corresponding portion 1C approaches a polygon that becomes a “corner”, while the second cylindrical portion 2 has a large portion occupied by the second corner-corresponding portion 2C (with a small radius of curvature) with respect to the entire circumference. Therefore, the whole becomes closer to a circle. Therefore, it is possible to rationally project and form the portion that becomes the “handle” in the radial direction while maintaining the overall shape compact. Moreover, since the 1st cylindrical part 1 becomes a form along the external shape of the casing 18 of the motor 14, it can flow the wind of a fan efficiently.

更には、この実施形態では、このように第２角部対応部２Ｃの周方向長さＬ２Ｃが大きいことと相まって、第２角部対応部２Ｃに、モータ１４の部品を装着するための挿通孔６０を形成するようにしている。本実施形態のように、外径の異なる第１、第２筒状部１、２や曲率半径の異なる第１、第２角部対応部１Ｃ、２Ｃ、あるいは第１、第２側面対応部１Ｓ、２Ｓによって構成されるファンカバー１２の場合、モータ１４の部品が挿通される挿通孔（６０）を、これらの境界部等に形成すると、当該挿通孔を使用しないときに取り付ける封止部材（グロメット）の装着が困難となることがある。そのため、特に、この実施形態では第２角部対応部２Ｃの周方向長さＬ２Ｃが大きく取られていることをも活用し、該第２角部対応部２Ｃにこれらの挿通孔６０を形成するようにしているため、形成の位置的自由度の確保と、封止部材を装着するときの装着の安定性の確保を両立させることができる。   Furthermore, in this embodiment, coupled with the fact that the circumferential length L2C of the second corner corresponding portion 2C is thus large, the insertion hole for mounting the component of the motor 14 on the second corner corresponding portion 2C. 60 is formed. As in this embodiment, the first and second cylindrical portions 1 and 2 having different outer diameters, the first and second corner corresponding portions 1C and 2C having different curvature radii, or the first and second side surface corresponding portions 1S. In the case of the fan cover 12 constituted by 2S, when the insertion holes (60) through which the components of the motor 14 are inserted are formed in these boundary portions or the like, sealing members (grommets) that are attached when the insertion holes are not used ) May be difficult to wear. Therefore, in particular, in this embodiment, it is also utilized that the circumferential length L2C of the second corner corresponding portion 2C is large, and these insertion holes 60 are formed in the second corner corresponding portion 2C. Therefore, it is possible to achieve both the securing of the positional freedom of formation and the securing of the mounting stability when the sealing member is mounted.

また、本実施形態では、第２筒状部２の後部（反本体側端部）に、テーパ部４６が設けられると共に、該テーパ部４６の反本体側開口部４７が、吸気口４８付きの蓋部材４９で閉塞されている。このため、第２筒状部２の反本体側端部は、径が小さくなっているため、ファンカバー１２を積み重ねるときの作業が容易である。   Further, in the present embodiment, the tapered portion 46 is provided at the rear portion (end portion on the opposite side of the main body) of the second cylindrical portion 2, and the opening portion 47 on the opposite side of the tapered portion 46 is provided with the intake port 48. It is closed with a lid member 49. For this reason, since the diameter of the end portion on the opposite side of the second cylindrical portion 2 is small, the work when stacking the fan covers 12 is easy.

また、本実施形態では、第２筒状部２の内側にモータ１４のブレーキ機構が収納され、該第２筒状部２の外周に沿って該ブレーキ機構の操作部材である手動解放レバー６２が配置されている。従来は、この種の操作部材（手動解放レバー）は、ファンカバーの外側にそのまま突出していたが、本実施形態では、図７に示されるように、手動解放レバー６２が、第１筒状部１より外径の小さな第２筒状部２の外周に沿って配置されているため、該手動解放レバー６２を、ほぼ第１筒状部１の外径内に納めることができ、極めて納まりがよい。   In the present embodiment, the brake mechanism of the motor 14 is housed inside the second cylindrical portion 2, and a manual release lever 62 that is an operation member of the brake mechanism is provided along the outer periphery of the second cylindrical portion 2. Has been placed. Conventionally, this type of operation member (manual release lever) protrudes directly to the outside of the fan cover, but in this embodiment, as shown in FIG. 7, the manual release lever 62 is provided with the first cylindrical portion. Since the second cylindrical portion 2 having an outer diameter smaller than 1 is disposed along the outer periphery, the manual release lever 62 can be accommodated within the outer diameter of the first cylindrical portion 1 and is extremely fit. Good.

なお、上記実施形態においては、装置（モータ）のフィンの先端形状が正方形の４隅を丸めた形状とされていたため、このフィンの先端形状に合わせるように第１筒状部の開口部の形状や、第１、第２筒状部の第１、第２角部対応部（第１、第２小径部）、あるいは第１、第２側面対応部（第１、第２大径部）の形状や曲率半径を設定するようにしていた。   In the above embodiment, since the tip shape of the fin of the device (motor) is a shape obtained by rounding the four corners of the square, the shape of the opening portion of the first cylindrical portion so as to match the tip shape of the fin. Or the first and second corner portions corresponding to the first and second cylindrical portions (first and second small diameter portions) or the first and second side surface corresponding portions (first and second large diameter portions). The shape and radius of curvature were set.

しかし、本発明においては、第１、第２筒状部の具体的な形状については、特に限定されない。すなわち、ファンカバーを装着しようとする装置の本体の形状やフィンの形状等に合わせて、適宜に設定されてよい。   However, in the present invention, the specific shapes of the first and second cylindrical portions are not particularly limited. That is, it may be set appropriately according to the shape of the main body of the device to which the fan cover is to be attached, the shape of the fins, and the like.

例えば、フィンの先端形状が正方形ではなく、六角形であった場合には、第１筒状部の開口部の形状は、これに対応させてほぼ六角形となるように形成するとよい。この場合には、大径部および小径部を、それぞれ、３対ずつ形成するとよい。   For example, when the tip shape of the fin is not a square but a hexagon, the shape of the opening of the first cylindrical portion may be formed so as to be substantially a hexagon corresponding to this. In this case, it is preferable to form three pairs of large diameter portions and small diameter portions.

また、上記実施形態においては、第１、第２大径部（第１、第２側面対応部）の曲率半径を無限大に設定し、該第１、第２大径部を（曲面ではなく）平面で構成するようにしていた。しかし、第１、第２大径部も、有限の曲率半径を有する曲面で構成するようにしてもよい。   Moreover, in the said embodiment, the curvature radius of a 1st, 2nd large diameter part (1st, 2nd side surface corresponding part) is set to infinite, and this 1st, 2nd large diameter part is not a curved surface. ) It was made up of planes. However, the first and second large diameter portions may also be configured by curved surfaces having a finite radius of curvature.

さらには、第１筒状部の内周形状と第２筒状部の外周形状が非相似形とされる限り、第１筒状部および第２筒状部のいずれか一方の筒状部は、小径部と大径部の曲率半径を同一とし、完全な円形としてもよい。   Furthermore, as long as the inner peripheral shape of the first cylindrical portion and the outer peripheral shape of the second cylindrical portion are dissimilar, either one of the first cylindrical portion and the second cylindrical portion is The radius of curvature of the small-diameter portion and the large-diameter portion may be the same and may be a complete circle.

また、ファンカバーを装着しようとする装置も、モータには限定されない。例えば、減速装置や、他の冷却の必要な種々の装置のファンを覆うファンカバーに適用することができる。   Further, the device to which the fan cover is to be attached is not limited to the motor. For example, the present invention can be applied to a fan cover that covers a reduction gear or a fan of various other devices that require cooling.

１…第１筒状部
１Ｃ…第１角部対応部（第１小径部）
１Ｓ…第１側面対応部（第１大径部）
２…第２筒状部
２Ｃ…第２角部対応部（第２小径部）
２Ｓ…第２側面対応部（第２大径部）
１２…ファンカバー
１４…モータ（装置）
１８…ケーシング（本体）
２０…フィン
３５…本体側開口部 DESCRIPTION OF SYMBOLS 1 ... 1st cylindrical part 1C ... 1st corner | angular part corresponding | compatible part (1st small diameter part)
1S ... 1st side surface corresponding part (1st large diameter part)
2 ... 2nd cylindrical part 2C ... 2nd corner | angular part corresponding | compatible part (2nd small diameter part)
2S: second side corresponding part (second large diameter part)
12 ... Fan cover 14 ... Motor (device)
18 ... Casing (main body)
20 ... Fin 35 ... Main body side opening

Claims (9)

装置の本体側に開口部を有する第１筒状部と、該第１筒状部に接続される第２筒状部と、を備えるファンカバーであって、
前記第２筒状部の外径は、前記第１筒状部の内径よりも小さく、
前記第１筒状部の内周形状と前記第２筒状部の外周形状が非相似形とされた
ことを特徴とする装置のファンカバー。 A fan cover comprising a first cylindrical part having an opening on the main body side of the device, and a second cylindrical part connected to the first cylindrical part,
The outer diameter of the second cylindrical part is smaller than the inner diameter of the first cylindrical part,
The fan cover of the apparatus, wherein the inner peripheral shape of the first cylindrical portion and the outer peripheral shape of the second cylindrical portion are non-similar. 請求項１において、
前記第１筒状部と前記第２筒状部を接続する接続部を備え、
該接続部は、軸方向に対して傾斜している
ことを特徴とする装置のファンカバー。 In claim 1,
A connecting portion for connecting the first cylindrical portion and the second cylindrical portion;
The connection part is inclined with respect to the axial direction. 請求項１または２において、
前記第１筒状部は、第１小曲率半径を有する第１小径部を備え、
前記第２筒状部は、該第１小径部に対応する第２小曲率半径を有する第２小径部を備え、
前記第２小径部の周方向の形成範囲の方が、前記第１小径部の周方向の形成範囲よりも広い
ことを特徴とする装置のファンカバー。 In claim 1 or 2,
The first cylindrical portion includes a first small diameter portion having a first small curvature radius,
The second cylindrical portion includes a second small diameter portion having a second small radius of curvature corresponding to the first small diameter portion,
The fan cover of the apparatus, wherein a circumferential formation range of the second small diameter portion is wider than a circumferential formation range of the first small diameter portion. 請求項３において、
前記第１筒状部は、前記第１小径部と、該第１小径部の前記第１小曲率半径よりも大きい第１大曲率半径を有する第１大径部と、を備え、
前記第２筒状部は、前記第２小径部と、該第２小径部の前記第２小曲率半径よりも大きい第２大曲率半径を有する第２大径部と、を備える
ことを特徴とする装置のファンカバー。 In claim 3,
The first cylindrical portion includes the first small diameter portion, and a first large diameter portion having a first large curvature radius larger than the first small curvature radius of the first small diameter portion,
The second cylindrical portion includes the second small diameter portion and a second large diameter portion having a second large radius of curvature larger than the second small radius of curvature of the second small diameter portion. The fan cover of the device to be used. 請求項４において、
前記第１大径部の周方向長さの方が、前記第１小径部の周方向長さよりも大きく、
前記第２大径部の周方向長さの方が、前記第２小径部の周方向長さよりも小さい
ことを特徴とする装置のファンカバー。 In claim 4,
The circumferential length of the first large diameter portion is larger than the circumferential length of the first small diameter portion,
The fan cover of the apparatus, wherein the circumferential length of the second large diameter portion is smaller than the circumferential length of the second small diameter portion. 請求項４または５において、
当該ファンカバーの同一の円周方向位置においては、前記第１大径部の内径が、前記第２大径部の外径と同一に設定されている
ことを特徴とする装置のファンカバー。 In claim 4 or 5,
The fan cover for an apparatus according to claim 1, wherein an inner diameter of the first large diameter portion is set to be the same as an outer diameter of the second large diameter portion at the same circumferential position of the fan cover. 請求項３〜６のいずれかにおいて、
前記第２小径部に、前記装置の部品が挿通される挿通孔が形成されている
ことを特徴とする装置のファンカバー。 In any one of Claims 3-6,
The fan cover of the device, wherein an insertion hole through which the component of the device is inserted is formed in the second small diameter portion. 請求項１〜７のいずれかにおいて、
前記第２筒状部の反本体側端部に、テーパ部が設けられると共に、該テーパ部の反本体側開口部が、吸気口付きの蓋部材で閉塞される
ことを特徴とする装置のファンカバー。 In any one of Claims 1-7,
A taper portion is provided at the end of the second cylindrical portion on the side opposite to the main body, and the opening on the side opposite to the main body of the taper portion is closed by a lid member with an air inlet. cover. 請求項１〜８のいずれかにおいて、
前記第２筒状部の内側に前記装置のブレーキ機構が収納され、該第２筒状部の外周に沿って該ブレーキ機構の操作部材が配置される
ことを特徴とする装置のファンカバー。 In any one of Claims 1-8,
A fan cover for a device, wherein the brake mechanism of the device is housed inside the second cylindrical portion, and an operation member of the brake mechanism is disposed along the outer periphery of the second cylindrical portion.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0847196A (en) * 1994-08-04 1996-02-16 Hitachi Ltd Rotating electric machine
JPH11127554A (en) * 1997-10-21 1999-05-11 Mitsubishi Electric Corp Electromagnetic brake
US20050040068A1 (en) * 2003-08-22 2005-02-24 Saul Palder Nestable containers
JP2005278288A (en) * 2004-03-24 2005-10-06 Daikin Ind Ltd Motor cooler
JP2010124534A (en) * 2008-11-17 2010-06-03 Mitsubishi Electric Corp Mixed flow fan for electric motors and motor equipped with this mixed flow fan
JP2010230081A (en) * 2009-03-27 2010-10-14 Ntn Corp Bearing device for wheel
EP2493058A1 (en) * 2011-02-23 2012-08-29 Siemens Aktiengesellschaft Gearmotor
CN203228585U (en) * 2013-08-15 2013-10-09 丛金阳 Disposable paint cup
WO2013157096A1 (en) * 2012-04-18 2013-10-24 三菱電機株式会社 Ac generator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642724A1 (en) 1986-12-13 1988-06-23 Grundfos Int ELECTRIC MOTOR WITH A FREQUENCY CONVERTER TO CONTROL THE MOTOR OPERATING SIZES
JP3406402B2 (en) * 1994-10-04 2003-05-12 株式会社日立製作所 Air-cooled gear transmission
US5763969A (en) 1996-11-14 1998-06-09 Reliance Electric Industrial Company Integrated electric motor and drive system with auxiliary cooling motor and asymmetric heat sink
DE102006016271B4 (en) 2005-04-12 2022-11-10 Sew-Eurodrive Gmbh & Co Kg Method of manufacturing an electric motor
DE102006054807A1 (en) 2006-11-21 2008-06-05 Siemens Ag Electric motor with quick-release fan unit
US9030066B2 (en) 2011-10-31 2015-05-12 Regal Beloit America, Inc. Electric motor with multiple power access
JP2014047486A (en) 2012-08-30 2014-03-17 Panahome Corp Underfloor storage structure
CN203238585U (en) * 2013-05-07 2013-10-16 舒旭辉 Sprinkling truck

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0847196A (en) * 1994-08-04 1996-02-16 Hitachi Ltd Rotating electric machine
JPH11127554A (en) * 1997-10-21 1999-05-11 Mitsubishi Electric Corp Electromagnetic brake
US20050040068A1 (en) * 2003-08-22 2005-02-24 Saul Palder Nestable containers
JP2005278288A (en) * 2004-03-24 2005-10-06 Daikin Ind Ltd Motor cooler
JP2010124534A (en) * 2008-11-17 2010-06-03 Mitsubishi Electric Corp Mixed flow fan for electric motors and motor equipped with this mixed flow fan
JP2010230081A (en) * 2009-03-27 2010-10-14 Ntn Corp Bearing device for wheel
EP2493058A1 (en) * 2011-02-23 2012-08-29 Siemens Aktiengesellschaft Gearmotor
WO2013157096A1 (en) * 2012-04-18 2013-10-24 三菱電機株式会社 Ac generator
CN203228585U (en) * 2013-08-15 2013-10-09 丛金阳 Disposable paint cup

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