JP2018105264A - Motor compressor - Google Patents

Motor compressor Download PDF

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Publication number
JP2018105264A
JP2018105264A JP2016254082A JP2016254082A JP2018105264A JP 2018105264 A JP2018105264 A JP 2018105264A JP 2016254082 A JP2016254082 A JP 2016254082A JP 2016254082 A JP2016254082 A JP 2016254082A JP 2018105264 A JP2018105264 A JP 2018105264A
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Japan
Prior art keywords
housing
protection
cover
protective
collision
Prior art date
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Withdrawn
Application number
JP2016254082A
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Japanese (ja)
Inventor
健司 門間
Kenji Momma
健司 門間
小出　達也
Tatsuya Koide
達也 小出
慎吾 江波
Shingo Enami
慎吾 江波
順也 矢野
Junya Yano
順也 矢野
雄介 木下
Yusuke Kinoshita
雄介 木下
正人 塚原
Masato Tsukahara
正人 塚原
和博 大楢
Kazuhiro Onara
和博 大楢
篤博 石田
Atsuhiro Ishida
篤博 石田
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Toyota Industries Corp
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Toyota Industries Corp
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Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Priority to JP2016254082A priority Critical patent/JP2018105264A/en
Priority to KR1020170174272A priority patent/KR20180076305A/en
Priority to DE102017130921.7A priority patent/DE102017130921A1/en
Priority to US15/852,984 priority patent/US20180180046A1/en
Priority to CN201711420893.5A priority patent/CN108240313A/en
Publication of JP2018105264A publication Critical patent/JP2018105264A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3226—Self-contained devices, i.e. including own drive motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements

Abstract

PROBLEM TO BE SOLVED: To make a protection part hardly deform when being subjected to external force due to a collision.SOLUTION: In a motor compressor, a protection part 21 includes recess parts 41, 42, 43 recessed so as to project toward a cover 17, thereby increasing stiffness of the protection part 21 compared to that when the recess parts 41, 42, 43 are not. Furthermore, the protection part 21 does not receive locally external force due to collision at a projection part, unlikely that when the protection part is provided with the projection part at an exterior surface 21b, thereby hardly generating deformation in the protection part 21 due to external force caused by a collision.SELECTED DRAWING: Figure 6

Description

本発明は、電動圧縮機に関する。   The present invention relates to an electric compressor.

電動圧縮機のハウジングには、冷媒を圧縮する圧縮部と、圧縮部を駆動する電動モータとが収容されている。ハウジングには、カバーが取り付けられている。ハウジングとカバーとの間には、電動モータを駆動する駆動回路が収容されている。   The housing of the electric compressor accommodates a compression unit that compresses the refrigerant and an electric motor that drives the compression unit. A cover is attached to the housing. A drive circuit for driving the electric motor is accommodated between the housing and the cover.

また、例えば特許文献１に開示されているように、電動圧縮機は、衝突による外力からカバーを保護する保護部材（プロテクタ）を備えている。保護部材は、ハウジングに取り付けられる取付部と、カバーから離間した位置に配置される板状の保護部と、を有している。そして、衝突による外力を保護部が受けて、保護部がカバーに向けて変形しても、保護部がカバーから離間した位置に配置されていることから、保護部がカバーに接触し難くなっており、衝突による外力がカバーに作用し難くなっている。   For example, as disclosed in Patent Document 1, the electric compressor includes a protection member (protector) that protects the cover from an external force caused by a collision. The protection member has an attachment portion that is attached to the housing and a plate-like protection portion that is disposed at a position separated from the cover. And even if the protective part receives an external force due to a collision and the protective part is deformed toward the cover, the protective part becomes difficult to contact the cover because the protective part is disposed at a position away from the cover. The external force due to the collision is less likely to act on the cover.

特開２０１６−１６６５４７号公報Japanese Patent Laid-Open No. 2006-166547

ところで、例えば、保護部の外面に凸部を設けることにより、保護部の剛性を高めることが考えられる。しかし、保護部の外面に凸部を設けると、衝突による外力を凸部によって局所的に受ける可能性が高くなり、衝突による外力に伴う保護部の変形が局所的に生じ易くなってしまう虞がある。   By the way, for example, it is conceivable to increase the rigidity of the protective part by providing a convex part on the outer surface of the protective part. However, if a convex portion is provided on the outer surface of the protective portion, there is a high possibility that the external force due to the collision is locally received by the convex portion, and the protective portion is likely to be locally deformed due to the external force due to the collision. is there.

本発明は、上記課題を解決するためになされたものであって、その目的は、衝突による外力に伴う保護部の変形を生じ難くすることができる電動圧縮機を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric compressor capable of making it difficult to cause deformation of a protective portion due to external force due to a collision.

上記課題を解決する電動圧縮機は、冷媒を圧縮する圧縮部と、前記圧縮部を駆動する電動モータと、前記電動モータを駆動する駆動回路と、前記圧縮部及び前記電動モータを収容する筒状のハウジングと、前記ハウジングに取り付けられ、前記ハウジングとの間に前記駆動回路を収容するカバーと、衝突による外力から前記カバーを保護する保護部材と、を備え、前記保護部材は、前記ハウジングに取り付けられる取付部と、前記カバーから離間して前記カバーに対向する位置に配置される板状の保護部と、を有する電動圧縮機であって、前記保護部材は、前記ハウジングの直径方向に延在しており、前記保護部には、前記カバーに向かって突出するように凹ませた複数の凹部が、前記保護部材の延在方向に沿って延在している。   An electric compressor that solves the above problems includes a compression unit that compresses a refrigerant, an electric motor that drives the compression unit, a drive circuit that drives the electric motor, and a cylindrical shape that houses the compression unit and the electric motor. And a cover that is attached to the housing and that accommodates the drive circuit between the housing and a protective member that protects the cover from an external force caused by a collision, and the protective member is attached to the housing An electric compressor, and a plate-shaped protection portion disposed at a position facing the cover and spaced from the cover, wherein the protection member extends in a diameter direction of the housing A plurality of recesses that are recessed so as to protrude toward the cover extend along the extending direction of the protection member.

これによれば、保護部が、カバーに向かって突出するように凹ませた複数の凹部を有してない場合に比べて、保護部の剛性を高めることができる。そして、保護部の外面に凸部が設けられている場合のように、衝突による外力を凸部によって局所的に受けることが無く、衝突による外力に伴う保護部の変形を生じ難くすることができる。   According to this, compared with the case where the protection part does not have a plurality of recesses that are recessed so as to protrude toward the cover, the rigidity of the protection part can be increased. And like the case where the convex part is provided in the outer surface of the protection part, the external force by a collision is not received locally by a convex part, and it can make it difficult to produce the deformation | transformation of the protection part accompanying the external force by a collision. .

上記電動圧縮機において、前記ハウジングの外面には、受け部が突出しており、前記保護部材は、衝突による外力を前記保護部が受けたときに、前記受け部に当接する当接部を有するとよい。これによれば、保護部が受けた衝突による外力を当接部から受け部へ逃がすことができるため、衝突による外力に伴う保護部の変形をさらに生じ難くすることができる。   In the electric compressor, a receiving portion protrudes from an outer surface of the housing, and the protection member has a contact portion that comes into contact with the receiving portion when an external force due to a collision is received by the protection portion. Good. According to this, since the external force due to the collision received by the protection part can be released from the contact part to the reception part, it is possible to further prevent the protection part from being deformed due to the external force due to the collision.

上記電動圧縮機において、前記ハウジング又は前記カバーは、外方に突出する筒状のコネクタ接続部を有し、前記保護部は、前記コネクタ接続部との干渉を避ける逃げ部を有しているとよい。これによれば、コネクタ接続部に保護部材が干渉しなうように、保護部材を、カバーに対して配置することが容易となる。   In the above electric compressor, the housing or the cover has a cylindrical connector connecting portion protruding outward, and the protection portion has a relief portion that avoids interference with the connector connecting portion. Good. According to this, it becomes easy to arrange | position a protection member with respect to a cover so that a protection member may not interfere with a connector connection part.

この発明によれば、衝突による外力に伴う保護部の変形を生じ難くすることができる。   According to the present invention, it is possible to make it difficult for the protective portion to be deformed due to an external force due to a collision.

実施形態における電動圧縮機を示す斜視図。The perspective view which shows the electric compressor in embodiment. 電動圧縮機の側面図。The side view of an electric compressor. 電動圧縮機の正面図。The front view of an electric compressor. 保護部材を内面側から見た斜視図。The perspective view which looked at the protection member from the inner surface side. 保護部材を外面側から見た斜視図。The perspective view which looked at the protection member from the outer surface side. 保護部材及びカバーの部分断面図。The fragmentary sectional view of a protection member and a cover.

以下、電動圧縮機を具体化した一実施形態を図１〜図６にしたがって説明する。なお、本実施形態の電動圧縮機は車両空調装置に用いられる。電動圧縮機は、車両のエンジンルーム内に配置されている。   Hereinafter, an embodiment embodying an electric compressor will be described with reference to FIGS. In addition, the electric compressor of this embodiment is used for a vehicle air conditioner. The electric compressor is disposed in the engine room of the vehicle.

図１に示すように、電動圧縮機１０のハウジング１１は筒状である。ハウジング１１は、有底筒状の吐出ハウジング１２と、吐出ハウジング１２に連結される有底筒状の吸入ハウジング１３と、を備えている。吐出ハウジング１２及び吸入ハウジング１３は、金属材料製（例えばアルミニウム製）である。   As shown in FIG. 1, the housing 11 of the electric compressor 10 is cylindrical. The housing 11 includes a bottomed cylindrical discharge housing 12 and a bottomed cylindrical suction housing 13 connected to the discharge housing 12. The discharge housing 12 and the suction housing 13 are made of a metal material (for example, aluminum).

図２に示すように、電動圧縮機１０は、回転軸１０ａと、冷媒を圧縮する圧縮部１４と、圧縮部１４を駆動する電動モータ１５と、電動モータ１５を駆動する駆動回路１６と、を備えている。圧縮部１４及び電動モータ１５は、吸入ハウジング１３内に収容されている。吸入ハウジング１３（ハウジング１１）の軸方向は、回転軸１０ａの軸方向に一致する。圧縮部１４は、吸入ハウジング１３の軸方向において電動モータ１５よりも吐出ハウジング１２側に配置されている。なお、特に図示は省略するが、本実施形態の圧縮部１４は、吸入ハウジング１３内に固定された固定スクロールと、固定スクロールに対向配置された可動スクロールと、固定スクロールと可動スクロールとによって区画される圧縮室と、を有している。   As shown in FIG. 2, the electric compressor 10 includes a rotating shaft 10 a, a compression unit 14 that compresses the refrigerant, an electric motor 15 that drives the compression unit 14, and a drive circuit 16 that drives the electric motor 15. I have. The compression unit 14 and the electric motor 15 are accommodated in the suction housing 13. The axial direction of the suction housing 13 (housing 11) coincides with the axial direction of the rotary shaft 10a. The compression unit 14 is disposed closer to the discharge housing 12 than the electric motor 15 in the axial direction of the suction housing 13. Although not particularly illustrated, the compression unit 14 of the present embodiment is partitioned by a fixed scroll fixed in the suction housing 13, a movable scroll disposed opposite to the fixed scroll, and the fixed scroll and the movable scroll. And a compression chamber.

吸入ハウジング１３の吸入ポート（図示せず）から吸入ハウジング１３内に吸入された冷媒は、可動スクロールの旋回（吸入動作）によって、圧縮室に吸入される。圧縮室内の冷媒は、可動スクロールの旋回（吐出動作）によって圧縮されて、吐出ハウジング１２内に吐出される。吐出ハウジング１２内に吐出された冷媒は、吐出ハウジング１２の吐出ポート（図示せず）を介して図示しない外部冷媒回路へ流出し、吸入ポートを介して吸入ハウジング１３内に還流する。   The refrigerant sucked into the suction housing 13 from the suction port (not shown) of the suction housing 13 is sucked into the compression chamber by the turning (suction operation) of the movable scroll. The refrigerant in the compression chamber is compressed by turning the movable scroll (discharge operation) and discharged into the discharge housing 12. The refrigerant discharged into the discharge housing 12 flows out to an external refrigerant circuit (not shown) through a discharge port (not shown) of the discharge housing 12 and returns to the intake housing 13 through the suction port.

吸入ハウジング１３は、底壁１３ａと、底壁１３ａの周縁部から吐出ハウジング１２に向けて吸入ハウジング１３の軸方向に延びる筒状の周壁１３ｂと、を有している。電動モータ１５は、吸入ハウジング１３の軸方向において底壁１３ａと圧縮部１４との間に配置されている。さらに、吸入ハウジング１３は、底壁１３ａから吐出ハウジング１２とは反対側に向けて吸入ハウジング１３の軸方向に延設される筒状の延設壁１３ｃを有している。   The suction housing 13 includes a bottom wall 13a and a cylindrical peripheral wall 13b extending in the axial direction of the suction housing 13 from the peripheral edge of the bottom wall 13a toward the discharge housing 12. The electric motor 15 is disposed between the bottom wall 13 a and the compression portion 14 in the axial direction of the suction housing 13. Further, the suction housing 13 has a cylindrical extending wall 13 c that extends in the axial direction of the suction housing 13 from the bottom wall 13 a toward the side opposite to the discharge housing 12.

図１に示すように、吸入ハウジング１３の延設壁１３ｃには、樹脂材料製である有蓋筒状のカバー１７が取り付けられている。本実施形態のカバー１７は、延設壁１３ｃの開口部１３ｄの内側に嵌め込まれた状態で吸入ハウジング１３に取り付けられている。   As shown in FIG. 1, a covered cylindrical cover 17 made of a resin material is attached to the extending wall 13 c of the suction housing 13. The cover 17 of this embodiment is attached to the suction housing 13 in a state of being fitted inside the opening 13d of the extending wall 13c.

図２に示すように、駆動回路１６は、吸入ハウジング１３の底壁１３ａ及び延設壁１３ｃとカバー１７とによって区画される空間に収容されている。よって、カバー１７は、ハウジング１１との間に駆動回路１６を収容する。本実施形態において、圧縮部１４、電動モータ１５、及び駆動回路１６は、この順序でハウジング１１の軸方向に並んで配置されている。   As shown in FIG. 2, the drive circuit 16 is accommodated in a space defined by the bottom wall 13 a and the extending wall 13 c of the suction housing 13 and the cover 17. Therefore, the cover 17 accommodates the drive circuit 16 between the housing 11. In the present embodiment, the compression unit 14, the electric motor 15, and the drive circuit 16 are arranged side by side in the axial direction of the housing 11 in this order.

図１に示すように、電動圧縮機１０は、衝突による外力からカバー１７を保護する保護部材２０（プロテクタ）を備えている。保護部材２０は鉄製である。保護部材２０は、吸入ハウジング１３に取り付けられている。保護部材２０は、ハウジング１１の直径方向に延在している。   As shown in FIG. 1, the electric compressor 10 includes a protection member 20 (protector) that protects the cover 17 from an external force caused by a collision. The protection member 20 is made of iron. The protection member 20 is attached to the suction housing 13. The protection member 20 extends in the diameter direction of the housing 11.

保護部材２０は、保護部２１、第１周壁部２２、第２周壁部２３、第１取付部２４、及び第２取付部２５を有している。したがって、保護部材２０は、二つの取付部（第１取付部２４及び第２取付部２５）を有している。   The protection member 20 includes a protection part 21, a first peripheral wall part 22, a second peripheral wall part 23, a first attachment part 24, and a second attachment part 25. Therefore, the protection member 20 has two attachment portions (a first attachment portion 24 and a second attachment portion 25).

保護部２１は、平板状であり、カバー１７の外面１７ａに対向する位置に配置されている。第１周壁部２２及び第２周壁部２３は、保護部２１の外縁の一部からハウジング１１の軸方向に延びて吸入ハウジング１３の延設壁１３ｃの周囲にそれぞれ配置されている。第１取付部２４は、第１周壁部２２における保護部２１とは反対側の端縁からハウジング１１の軸方向に対して直交する方向の外方へ立設された平板状のフランジである。第２取付部２５は、第２周壁部２３における保護部２１とは反対側の端縁からハウジング１１の軸方向に対して直交する方向の外方へ立設された平板状のフランジである。   The protection part 21 has a flat plate shape and is disposed at a position facing the outer surface 17 a of the cover 17. The first peripheral wall portion 22 and the second peripheral wall portion 23 extend from a part of the outer edge of the protective portion 21 in the axial direction of the housing 11 and are respectively disposed around the extending wall 13 c of the suction housing 13. The first mounting portion 24 is a flat plate-like flange that is erected outward from the edge of the first peripheral wall portion 22 on the side opposite to the protection portion 21 in the direction orthogonal to the axial direction of the housing 11. The second attachment portion 25 is a flat plate-like flange erected outward from the end of the second peripheral wall portion 23 on the side opposite to the protection portion 21 in the direction orthogonal to the axial direction of the housing 11.

保護部２１におけるカバー１７の外面１７ａに対向する面は、保護部２１の内面２１ａである。保護部２１における内面２１ａとは反対側の面は、保護部２１の外面２１ｂである。   A surface of the protection unit 21 that faces the outer surface 17 a of the cover 17 is an inner surface 21 a of the protection unit 21. The surface of the protection unit 21 opposite to the inner surface 21 a is the outer surface 21 b of the protection unit 21.

図３に示すように、第１取付部２４及び第２取付部２５は、保護部材２０を保護部２１の外面２１ｂ側から見ると、保護部２１を外面２１ｂの平面方向で挟む位置に配置されている。   As shown in FIG. 3, when the protection member 20 is viewed from the outer surface 21b side of the protection portion 21, the first attachment portion 24 and the second attachment portion 25 are arranged at positions that sandwich the protection portion 21 in the planar direction of the outer surface 21b. ing.

保護部２１の外縁における第１周壁部２２に対応する位置に存在する部分は、外方に弧状に膨らむ第１弧状外縁部２１１となっている。そして、第１周壁部２２の外周面２２ａは、第１弧状外縁部２１１に沿って弧状に湾曲している。保護部２１の外縁における第２周壁部２３に対応する位置に存在する部分は、外方に弧状に膨らむ第２弧状外縁部２１２となっている。そして、第２周壁部２３の外周面２３ａは、第２弧状外縁部２１２に沿って弧状に湾曲している。第１周壁部２２の外周面２２ａ及び第２周壁部２３の外周面２３ａは、同一の仮想円Ｃ１上に位置している。   A portion present at a position corresponding to the first peripheral wall portion 22 on the outer edge of the protection portion 21 is a first arc-shaped outer edge portion 211 that bulges outward in an arc shape. The outer peripheral surface 22 a of the first peripheral wall portion 22 is curved in an arc shape along the first arc-shaped outer edge portion 211. A portion present at a position corresponding to the second peripheral wall portion 23 on the outer edge of the protection portion 21 is a second arc-shaped outer edge portion 212 that bulges outward in an arc shape. The outer peripheral surface 23 a of the second peripheral wall portion 23 is curved in an arc shape along the second arc-shaped outer edge portion 212. The outer peripheral surface 22a of the first peripheral wall portion 22 and the outer peripheral surface 23a of the second peripheral wall portion 23 are located on the same virtual circle C1.

第１取付部２４における第１周壁部２２の端縁に連結された基端縁２４ａの仮想円Ｃ１の周方向の長さと、第２取付部２５における第２周壁部２３の端縁に連結された基端縁２５ａの仮想円Ｃ１の周方向の長さとは同じになっている。   Connected to the circumferential length of the virtual circle C1 of the base end edge 24a connected to the edge of the first peripheral wall portion 22 in the first mounting portion 24 and to the edge of the second peripheral wall portion 23 in the second mounting portion 25. The length of the base end edge 25a in the circumferential direction of the virtual circle C1 is the same.

第１取付部２４の外縁２４ｂは、第１周壁部２２の外周面２２ａに沿って弧状に湾曲している。第１取付部２４の外縁２４ｂの一部分には、外方へ膨出する膨出部２４ｃが形成されている。第２取付部２５の外縁２５ｂは、第２周壁部２３の外周面２３ａに沿って弧状に湾曲している。第２取付部２５の外縁２５ｂの一部分には、外方へ膨出する膨出部２５ｃが形成されている。第１取付部２４の膨出部２４ｃ及び第２取付部２５の膨出部２５ｃは、仮想円Ｃ１の周方向にほぼ１８０度離れた位置にそれぞれ配置されている。   The outer edge 24 b of the first attachment portion 24 is curved in an arc along the outer peripheral surface 22 a of the first peripheral wall portion 22. A bulging portion 24 c that bulges outward is formed in a part of the outer edge 24 b of the first mounting portion 24. The outer edge 25 b of the second mounting portion 25 is curved in an arc along the outer peripheral surface 23 a of the second peripheral wall portion 23. A part of the outer edge 25b of the second mounting part 25 is formed with a bulging part 25c that bulges outward. The bulging portion 24c of the first mounting portion 24 and the bulging portion 25c of the second mounting portion 25 are respectively disposed at positions that are approximately 180 degrees apart in the circumferential direction of the virtual circle C1.

図４及び図５に示すように、第１取付部２４における膨出部２４ｃを含む部位には、螺子挿通孔２４ｈが形成されている。螺子挿通孔２４ｈは、第１取付部２４を厚み方向に貫通している。第２取付部２５における膨出部２５ｃを含む部位には、螺子挿通孔２５ｈが形成されている。螺子挿通孔２５ｈは、第２取付部２５を厚み方向に貫通している。   As shown in FIGS. 4 and 5, a screw insertion hole 24 h is formed in a portion including the bulging portion 24 c in the first attachment portion 24. The screw insertion hole 24h penetrates the first attachment portion 24 in the thickness direction. A screw insertion hole 25h is formed in a portion of the second attachment portion 25 including the bulging portion 25c. The screw insertion hole 25h penetrates the second attachment portion 25 in the thickness direction.

図１及び図２に示すように、吸入ハウジング１３の延設壁１３ｃの外周面には、第１ボス部１３ｅ及び第２ボス部１３ｆが突設されている。第１ボス部１３ｅ及び第２ボス部１３ｆは、延設壁１３ｃの外周面において、吸入ハウジング１３の周方向にほぼ１８０度離れた位置にそれぞれ配置されている。第１ボス部１３ｅ及び第２ボス部１３ｆにおいて、吸入ハウジング１３の軸方向で吐出ハウジング１２とは反対側に位置する端面は、平坦面状になっている。   As shown in FIGS. 1 and 2, a first boss portion 13 e and a second boss portion 13 f protrude from the outer peripheral surface of the extending wall 13 c of the suction housing 13. The first boss portion 13e and the second boss portion 13f are respectively disposed at positions 180 degrees apart in the circumferential direction of the suction housing 13 on the outer peripheral surface of the extending wall 13c. In the first boss portion 13e and the second boss portion 13f, end surfaces located on the side opposite to the discharge housing 12 in the axial direction of the suction housing 13 are flat.

第１取付部２４における保護部２１とは反対側の面において、膨出部２４ｃを含む部位は、第１ボス部１３ｅの端面に接触している。第２取付部２５における保護部２１とは反対側の面において、膨出部２５ｃを含む部位は、第２ボス部１３ｆの端面に接触している。そして、第１取付部２４の螺子挿通孔２４ｈを通過した螺子Ｂ１が、第１ボス部１３ｅにねじ込まれることにより第１取付部２４が第１ボス部１３ｅに取り付けられる。また、第２取付部２５の螺子挿通孔２５ｈを通過した螺子Ｂ２が、第２ボス部１３ｆにねじ込まれることにより、第２取付部２５が第２ボス部１３ｆに取り付けられる。これにより、保護部材２０が吸入ハウジング１３に取り付けられる。   The part including the bulging part 24c is in contact with the end face of the first boss part 13e on the surface of the first attachment part 24 opposite to the protection part 21. On the surface of the second attachment portion 25 opposite to the protection portion 21, the portion including the bulging portion 25c is in contact with the end surface of the second boss portion 13f. Then, the screw B1 that has passed through the screw insertion hole 24h of the first attachment portion 24 is screwed into the first boss portion 13e, whereby the first attachment portion 24 is attached to the first boss portion 13e. Further, the screw B2 that has passed through the screw insertion hole 25h of the second attachment portion 25 is screwed into the second boss portion 13f, whereby the second attachment portion 25 is attached to the second boss portion 13f. Thereby, the protection member 20 is attached to the suction housing 13.

図３に示すように、保護部２１の外縁は、第１弧状外縁部２１１における仮想円Ｃ１の周方向の一端と第２弧状外縁部２１２における仮想円Ｃ１の周方向の一端とを繋ぐ連繋外縁部２１３を有している。ここで、保護部材２０を保護部２１の外面２１ｂ側から見たときに、保護部２１を介した第１取付部２４と第２取付部２５との対向する方向を対向方向Ｘ１とすると、連繋外縁部２１３は、対向方向Ｘ１に直線状に延びている。   As shown in FIG. 3, the outer edge of the protection part 21 is a continuous outer edge that connects one end in the circumferential direction of the virtual circle C1 in the first arcuate outer edge 211 and one end in the circumferential direction of the virtual circle C1 in the second arcuate outer edge 212. Part 213. Here, when the protection member 20 is viewed from the outer surface 21b side of the protection part 21, the opposing direction of the first attachment part 24 and the second attachment part 25 through the protection part 21 is the opposing direction X1, and the connection is established. The outer edge portion 213 extends linearly in the facing direction X1.

また、第１弧状外縁部２１１における仮想円Ｃ１の周方向の長さは、第１取付部２４の基端縁２４ａにおける仮想円Ｃ１の周方向の長さよりも長くなっている。第１弧状外縁部２１１は、仮想円Ｃ１の周方向において、第１取付部２４の基端縁２４ａよりも連繋外縁部２１３とは反対側へ延びている。第１周壁部２２は、仮想円Ｃ１の周方向において、第１取付部２４の基端縁２４ａよりも連繋外縁部２１３とは反対側へ延びる延長壁部２２ｂを有している。   Further, the circumferential length of the virtual circle C1 at the first arcuate outer edge 211 is longer than the circumferential length of the virtual circle C1 at the base edge 24a of the first mounting portion 24. The first arc-shaped outer edge portion 211 extends to the side opposite to the outer edge portion 213 linked to the base end edge 24a of the first attachment portion 24 in the circumferential direction of the virtual circle C1. The first peripheral wall portion 22 has an extension wall portion 22b that extends to the side opposite to the outer edge portion 213 connected to the base end edge 24a of the first attachment portion 24 in the circumferential direction of the virtual circle C1.

さらに、保護部２１の外縁は、第１延在外縁部２１４、第２延在外縁部２１５、及びアール外縁部２１６を有している。第１延在外縁部２１４は、第２弧状外縁部２１２における仮想円Ｃ１の周方向の他端から連繋外縁部２１３に平行に延びている。第２延在外縁部２１５は、第１延在外縁部２１４に対して直交する方向であって、且つ第１弧状外縁部２１１の他端から連繋外縁部２１３に向けて延びている。アール外縁部２１６は、第１延在外縁部２１４における第２弧状外縁部２１２とは反対側の端部と、第２延在外縁部２１５における第１弧状外縁部２１１とは反対側の端部とを繋ぐ。したがって、保護部材２０は、仮想円Ｃ１の周方向において、第１周壁部２２の延長壁部２２ｂと第２周壁部２３との間が刳り貫かれている。   Furthermore, the outer edge of the protection part 21 has a first extending outer edge part 214, a second extending outer edge part 215, and a rounded outer edge part 216. The first extending outer edge portion 214 extends in parallel to the connecting outer edge portion 213 from the other end of the second arcuate outer edge portion 212 in the circumferential direction of the virtual circle C1. The second extending outer edge 215 extends in a direction orthogonal to the first extending outer edge 214 and extends from the other end of the first arcuate outer edge 211 toward the connecting outer edge 213. The rounded outer edge portion 216 includes an end portion of the first extending outer edge portion 214 opposite to the second arcuate outer edge portion 212 and an end portion of the second extending outer edge portion 215 opposite to the first arcuate outer edge portion 211. Connect with. Therefore, in the circumferential direction of the virtual circle C <b> 1, the protective member 20 is sandwiched between the extended wall portion 22 b of the first peripheral wall portion 22 and the second peripheral wall portion 23.

カバー１７は、カバー１７の外面１７ａから外方に突出する四角筒状のコネクタ接続部である第１コネクタ接続部１７１及び第２コネクタ接続部１７２を有する。第１コネクタ接続部１７１は、電力供給用のコネクタであり、車両に搭載された図示しないバッテリから駆動回路１６へ電力を供給するために用いられる。第２コネクタ接続部１７２は、図示しない電子制御装置（ＥＣＵ）との通信用のコネクタであり、電子制御装置からの制御信号を駆動回路１６へ送信するために用いられる。   The cover 17 includes a first connector connecting portion 171 and a second connector connecting portion 172 that are rectangular cylindrical connector connecting portions that protrude outward from the outer surface 17 a of the cover 17. The first connector connecting portion 171 is a power supply connector, and is used to supply power to the drive circuit 16 from a battery (not shown) mounted on the vehicle. The second connector connection portion 172 is a connector for communication with an electronic control unit (ECU) (not shown), and is used to transmit a control signal from the electronic control unit to the drive circuit 16.

カバー１７を外面１７ａ側から見たときに、第１コネクタ接続部１７１は、第１ボス部１３ｅ及び第２ボス部１３ｆに対して、吸入ハウジング１３の周方向にほぼ９０度離れた外面１７ａの外周部分に配置されている。第２コネクタ接続部１７２は、カバー１７を外面１７ａ側から見たときに、第１コネクタ接続部１７１に対して、吸入ハウジング１３の周方向にほぼ９０度離れた第１ボス部１３ｅ寄りの外面１７ａの外周部分に配置されている。   When the cover 17 is viewed from the outer surface 17a side, the first connector connecting portion 171 is formed on the outer surface 17a which is approximately 90 degrees away from the first boss portion 13e and the second boss portion 13f in the circumferential direction of the suction housing 13. It is arranged on the outer periphery. The second connector connecting portion 172 has an outer surface near the first boss portion 13e that is approximately 90 degrees away from the first connector connecting portion 171 in the circumferential direction when the cover 17 is viewed from the outer surface 17a side. It is arrange | positioned at the outer peripheral part of 17a.

第１コネクタ接続部１７１は、連繋外縁部２１３よりも外方に配置されている。言い換えると、保護部材２０は、保護部材２０が吸入ハウジング１３に取り付けられるときに、第１コネクタ接続部１７１と干渉しないように、連繋外縁部２１３が第１コネクタ接続部１７１よりも第２コネクタ接続部１７２側に位置する形状になっている。よって、連繋外縁部２１３は、保護部材２０が吸入ハウジング１３に取り付けられるときに、第１コネクタ接続部１７１との干渉を避ける逃げ部として機能している。   The first connector connecting portion 171 is disposed outward from the connecting outer edge portion 213. In other words, when the protective member 20 is attached to the suction housing 13, the protective outer member 213 is connected to the second connector rather than the first connector connecting portion 171 so that the connecting outer edge portion 213 does not interfere with the first connector connecting portion 171. The shape is located on the portion 172 side. Therefore, the connecting outer edge portion 213 functions as an escape portion that avoids interference with the first connector connecting portion 171 when the protection member 20 is attached to the suction housing 13.

保護部２１には、第２コネクタ接続部１７２が内側を通過する長孔状の貫通孔２１ｈが形成されている。貫通孔２１ｈは、貫通孔２１ｈの長手方向が対向方向Ｘ１と一致するように保護部２１に形成されている。貫通孔２１ｈは、保護部材２０が吸入ハウジング１３に取り付けられるときに、第２コネクタ接続部１７２との干渉を避ける逃げ部として機能している。   The protective part 21 is formed with a long through hole 21h through which the second connector connecting part 172 passes. The through-hole 21h is formed in the protection part 21 so that the longitudinal direction of the through-hole 21h coincides with the facing direction X1. The through-hole 21 h functions as a relief portion that avoids interference with the second connector connection portion 172 when the protection member 20 is attached to the suction housing 13.

図４に示すように、保護部２１は、保護部２１の内面２１ａから突出する凸部である第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４を有している。第１凸部３１は、貫通孔２１ｈよりも連繋外縁部２１３側に位置している。第１凸部３１は、対向方向Ｘ１に直線状に延びている。第２凸部３２は、貫通孔２１ｈよりも第１延在外縁部２１４側に位置している。第２凸部３２は、対向方向Ｘ１に直線状に延びている。第１凸部３１及び第２凸部３２は互いに平行である。第１凸部３１の対向方向Ｘ１の長さと、第２凸部３２の対向方向Ｘ１の長さとは同じである。   As shown in FIG. 4, the protective part 21 includes a first convex part 31, a second convex part 32, a third convex part 33, and a fourth convex part 34 that are convex parts protruding from the inner surface 21 a of the protective part 21. Have. The 1st convex part 31 is located in the outer edge part 213 side connected rather than the through-hole 21h. The first convex portion 31 extends linearly in the facing direction X1. The second convex portion 32 is located closer to the first extending outer edge portion 214 than the through hole 21h. The second convex portion 32 extends linearly in the facing direction X1. The 1st convex part 31 and the 2nd convex part 32 are mutually parallel. The length of the first protrusion 31 in the facing direction X1 is the same as the length of the second protrusion 32 in the facing direction X1.

第３凸部３３は、対向方向Ｘ１において貫通孔２１ｈと第２周壁部２３との間に位置している。第３凸部３３は、対向方向Ｘ１に直線状に延びている。第３凸部３３の対向方向Ｘ１の長さは、第１凸部３１及び第２凸部３２の対向方向Ｘ１の長さよりも短い。第４凸部３４は、第２凸部３２よりも延長壁部２２ｂ側に位置している。第４凸部３４の対向方向Ｘ１の長さは、第３凸部３３の対向方向Ｘ１の長さよりも短い。   The third convex portion 33 is located between the through hole 21h and the second peripheral wall portion 23 in the facing direction X1. The third convex portion 33 extends linearly in the facing direction X1. The length of the third convex portion 33 in the facing direction X1 is shorter than the length of the first convex portion 31 and the second convex portion 32 in the facing direction X1. The fourth convex portion 34 is located closer to the extended wall portion 22 b than the second convex portion 32. The length of the fourth protrusion 34 in the facing direction X1 is shorter than the length of the third protrusion 33 in the facing direction X1.

第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４は、保護部２１の内面２１ａから弧状に湾曲するように膨出している。よって、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４の外面はそれぞれ湾曲している。保護部２１の内面２１ａは、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４を除く内面２１ａ全体が平坦面状である。本実施形態において、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４を除く内面２１ａ全体が、同一平面上に位置している。   The first convex portion 31, the second convex portion 32, the third convex portion 33, and the fourth convex portion 34 bulge out from the inner surface 21 a of the protection portion 21 so as to be curved in an arc shape. Therefore, the outer surfaces of the first convex portion 31, the second convex portion 32, the third convex portion 33, and the fourth convex portion 34 are curved. As for the inner surface 21a of the protection part 21, the whole inner surface 21a except the 1st convex part 31, the 2nd convex part 32, the 3rd convex part 33, and the 4th convex part 34 is flat surface shape. In the present embodiment, the entire inner surface 21a excluding the first convex portion 31, the second convex portion 32, the third convex portion 33, and the fourth convex portion 34 is located on the same plane.

第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４は、保護部２１の外面２１ｂを凹ませることによって内面２１ａから突出するように形成されている。したがって、図５に示すように、保護部２１の外面２１ｂには、凹部である第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４が形成されている。   The 1st convex part 31, the 2nd convex part 32, the 3rd convex part 33, and the 4th convex part 34 are formed so that it may protrude from the inner surface 21a by denting the outer surface 21b of the protection part 21. FIG. Therefore, as shown in FIG. 5, the first recess 41, the second recess 42, the third recess 43, and the fourth recess 44, which are recesses, are formed on the outer surface 21 b of the protection portion 21.

第１凹部４１は、保護部２１の外面２１ｂにおける保護部２１の厚み方向で第１凸部３１に対応する部位に形成されている。第２凹部４２は、保護部２１の外面２１ｂにおける保護部２１の厚み方向で第２凸部３２に対応する部位に形成されている。第３凹部４３は、保護部２１の外面２１ｂにおける保護部２１の厚み方向で第３凸部３３に対応する部位に形成されている。第４凹部４４は、保護部２１の外面２１ｂにおける保護部２１の厚み方向で第４凸部３４に対応する部位に形成されている。   The first concave portion 41 is formed in a portion corresponding to the first convex portion 31 in the thickness direction of the protective portion 21 on the outer surface 21 b of the protective portion 21. The second concave portion 42 is formed in a portion corresponding to the second convex portion 32 in the thickness direction of the protective portion 21 on the outer surface 21 b of the protective portion 21. The third concave portion 43 is formed in a portion corresponding to the third convex portion 33 in the thickness direction of the protective portion 21 on the outer surface 21 b of the protective portion 21. The fourth concave portion 44 is formed in a portion corresponding to the fourth convex portion 34 in the thickness direction of the protective portion 21 on the outer surface 21 b of the protective portion 21.

保護部２１の外面２１ｂは、第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を除く外面２１ｂ全体が平坦面状である。本実施形態において、第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を除く外面２１ｂ全体が、同一平面上に位置している。   The outer surface 21b of the protection part 21 has a flat outer surface 21b except for the first recess 41, the second recess 42, the third recess 43, and the fourth recess 44. In the present embodiment, the entire outer surface 21b excluding the first recess 41, the second recess 42, the third recess 43, and the fourth recess 44 is located on the same plane.

図２に示すように、吸入ハウジング１３の外周面には、受け部２６が突出している。受け部２６は、吸入ハウジング１３の周壁１３ｂの外周面における延設壁１３ｃ寄りに位置している。受け部２６は、吸入ハウジング１３の軸方向に対して直交する方向に延びる平坦面状の受け面２６ａを有している。受け面２６ａの一部は、保護部材２０の延長壁部２２ｂと吸入ハウジング１３の軸方向において対向している。   As shown in FIG. 2, a receiving portion 26 projects from the outer peripheral surface of the suction housing 13. The receiving portion 26 is located near the extending wall 13 c on the outer peripheral surface of the peripheral wall 13 b of the suction housing 13. The receiving portion 26 has a flat receiving surface 26 a extending in a direction orthogonal to the axial direction of the suction housing 13. A part of the receiving surface 26 a faces the extension wall portion 22 b of the protection member 20 in the axial direction of the suction housing 13.

延長壁部２２ｂにおける受け面２６ａと吸入ハウジング１３の軸方向で対向する部位には、受け面２６ａに向けて吸入ハウジング１３の軸方向に突出する板状の当接部２２ｆが形成されている。当接部２２ｆは、衝突による外力を保護部２１が受けたときに、受け部２６の受け面２６ａに当接する。よって、本実施形態の保護部材２０は、衝突による外力を保護部２１が受けたときに、受け部２６に当接する当接部２２ｆを有している。   A plate-like contact portion 22f that protrudes in the axial direction of the suction housing 13 toward the receiving surface 26a is formed at a portion of the extension wall portion 22b that faces the receiving surface 26a in the axial direction of the suction housing 13. The contact portion 22f contacts the receiving surface 26a of the receiving portion 26 when the protective portion 21 receives an external force due to a collision. Therefore, the protection member 20 of this embodiment has the contact part 22f which contacts the receiving part 26, when the protective part 21 receives the external force by a collision.

図６に示すように、保護部２１は、カバー１７の外面１７ａから離間した位置に配置されている。したがって、保護部２１には、カバー１７に向かって突出するように凹ませた第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４が、保護部材２０の延在方向に沿って延在している。保護部２１の内面２１ａ、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４とカバー１７の外面１７ａとの間にはそれぞれ間隙が存在する。   As shown in FIG. 6, the protective portion 21 is disposed at a position spaced from the outer surface 17 a of the cover 17. Therefore, the first concave portion 41, the second concave portion 42, the third concave portion 43, and the fourth concave portion 44 that are recessed so as to protrude toward the cover 17 are formed in the protective portion 21 in the extending direction of the protective member 20. Extending along. There are gaps between the inner surface 21 a of the protection part 21, the first convex part 31, the second convex part 32, the third convex part 33, the fourth convex part 34 and the outer surface 17 a of the cover 17.

次に、本実施形態の作用について説明する。
車両の衝突によってエンジンルームを構成する車両のフレーム等の車両構成物Ｅ１が変形して、車両構成物Ｅ１が保護部２１の外面２１ｂに衝突したとする。例えば、保護部２１の外面２１ｂに凸部が設けられていると、車両構成物Ｅ１は凸部に衝突し、衝突による外力を凸部によって局所的に受ける可能性が高くなり、衝突による外力に伴う保護部２１の変形が局所的に生じ易くなってしまう。そこで、本実施形態において、保護部２１の外面２１ｂは、第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を除く外面２１ｂ全体が平坦面状であるため、車両構成物Ｅ１は外面２１ｂに衝突し、保護部２１は、衝突による外力を平坦面状である外面２１ｂで受ける。したがって、保護部２１の外面２１ｂに凸部が設けられている場合のように、衝突による外力を凸部によって局所的に受けることが無く、衝突による外力に伴う保護部２１の変形が生じ難い。 Next, the operation of this embodiment will be described.
It is assumed that the vehicle component E1 such as a vehicle frame constituting the engine room is deformed by the collision of the vehicle, and the vehicle component E1 collides with the outer surface 21b of the protection unit 21. For example, when a convex portion is provided on the outer surface 21b of the protective portion 21, the vehicle component E1 collides with the convex portion, and the possibility that the external force due to the collision is locally received by the convex portion increases, and the external force due to the collision is increased. The accompanying deformation of the protective part 21 is likely to occur locally. Therefore, in the present embodiment, the outer surface 21b of the protection portion 21 is a flat surface shape except for the entire outer surface 21b excluding the first recess 41, the second recess 42, the third recess 43, and the fourth recess 44. The object E1 collides with the outer surface 21b, and the protection unit 21 receives external force due to the collision with the outer surface 21b having a flat surface shape. Therefore, unlike the case where a convex portion is provided on the outer surface 21b of the protection portion 21, the external force due to the collision is not locally received by the convex portion, and the protection portion 21 is hardly deformed due to the external force due to the collision.

また、保護部２１は、カバー１７に向かって突出するように凹ませた第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を有しているため、保護部２１が、第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を有していない場合に比べて、保護部２１の剛性が高められており、衝突による外力を受けても変形し難い。   Moreover, since the protection part 21 has the 1st recessed part 41 dented so that it may protrude toward the cover 17, the 2nd recessed part 42, the 3rd recessed part 43, and the 4th recessed part 44, the protection part 21 has Compared to the case where the first concave portion 41, the second concave portion 42, the third concave portion 43, and the fourth concave portion 44 are not provided, the rigidity of the protective portion 21 is enhanced, and it is deformed even if it receives an external force due to a collision. It is hard to do.

さらには、衝突による外力を保護部２１が受けたときに、保護部２１が、対向方向Ｘ１で反るように変形しようとするが、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４が対向方向Ｘ１に延びているため、保護部２１が、対向方向Ｘ１で反るように変形してしまうことが抑制されている。   Furthermore, when the protective part 21 receives an external force due to a collision, the protective part 21 tries to deform so as to warp in the facing direction X1, but the first convex part 31, the second convex part 32, the third convex part. Since the part 33 and the 4th convex part 34 are extended in the opposing direction X1, it is suppressed that the protection part 21 deform | transforms so that it may warp in the opposing direction X1.

また、衝突による外力を保護部２１が受けたときに、当接部２２ｆが受け部２６の受け面２６ａに当接する。よって、保護部２１が受けた衝突による外力を当接部２２ｆから受け部２６へ逃がすことができるため、衝突による外力に伴う保護部２１の変形が生じ難くなる。   Further, when the protective part 21 receives an external force due to a collision, the contact part 22 f comes into contact with the receiving surface 26 a of the receiving part 26. Therefore, since the external force caused by the collision received by the protective part 21 can be released from the contact part 22f to the receiving part 26, the protective part 21 is hardly deformed due to the external force caused by the collision.

保護部２１の内面２１ａ、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４とカバー１７の外面１７ａとの間にはそれぞれ間隙が存在しており、保護部２１が多少変形したとしても、保護部２１がカバー１７に接触し難くなっている。よって、衝突による外力がカバー１７に作用し難く、駆動回路１６が保護される。   There are gaps between the inner surface 21a of the protection part 21, the first convex part 31, the second convex part 32, the third convex part 33, and the fourth convex part 34 and the outer surface 17a of the cover 17, respectively. Even if the protection part 21 is slightly deformed, the protection part 21 is difficult to contact the cover 17. Therefore, the external force due to the collision hardly acts on the cover 17 and the drive circuit 16 is protected.

上記実施形態では以下の効果を得ることができる。
（１）保護部２１が、カバー１７に向かって突出するように凹ませた第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を有しているため、保護部２１が、第１凹部４１、第２凹部４２、第３凹部４３、及び第４凹部４４を有してない場合に比べて、保護部２１の剛性を高めることができる。そして、保護部２１の外面２１ｂに凸部が設けられている場合のように、衝突による外力を凸部によって局所的に受けることが無く、衝突による外力に伴う保護部２１の変形を生じ難くすることができる。 In the above embodiment, the following effects can be obtained.
(1) Since the protection part 21 has the 1st recessed part 41 dented so that it may protrude toward the cover 17, the 2nd recessed part 42, the 3rd recessed part 43, and the 4th recessed part 44, the protection part 21 However, the rigidity of the protection part 21 can be increased as compared with the case where the first recess 41, the second recess 42, the third recess 43, and the fourth recess 44 are not provided. Then, unlike the case where a convex portion is provided on the outer surface 21b of the protective portion 21, external force due to the collision is not locally received by the convex portion, and the protective portion 21 is hardly deformed due to the external force due to the collision. be able to.

（２）吸入ハウジング１３の外周面には、受け部２６が突出している。保護部材２０は、衝突による外力を保護部２１が受けたときに、受け部２６に当接する当接部２２ｆを有している。これによれば、保護部２１が受けた衝突による外力を当接部２２ｆから受け部２６へ逃がすことができるため、衝突による外力に伴う保護部２１の変形をさらに生じ難くすることができる。   (2) A receiving portion 26 projects from the outer peripheral surface of the suction housing 13. The protective member 20 has a contact portion 22f that contacts the receiving portion 26 when the protective portion 21 receives an external force due to a collision. According to this, since the external force due to the collision received by the protective part 21 can be released from the contact part 22f to the receiving part 26, the deformation of the protective part 21 due to the external force due to the collision can be further prevented.

（３）保護部２１は、第１コネクタ接続部１７１との干渉を避ける逃げ部として機能する連繋外縁部２１３を有している。また、保護部２１は、第２コネクタ接続部１７２との干渉を避ける逃げ部として機能する貫通孔２１ｈを有している。これによれば、カバー１７における第１コネクタ接続部１７１及び第２コネクタ接続部１７２が突出している外面１７ａに対して保護部２１の内面２１ａが対向配置されるように、保護部材２０を、カバー１７に対して配置することが容易となる。   (3) The protection part 21 has a connecting outer edge part 213 that functions as an escape part to avoid interference with the first connector connection part 171. In addition, the protection part 21 has a through hole 21 h that functions as an escape part that avoids interference with the second connector connection part 172. According to this, the protection member 20 is attached to the cover so that the inner surface 21a of the protection portion 21 is disposed opposite to the outer surface 17a from which the first connector connection portion 171 and the second connector connection portion 172 of the cover 17 protrude. 17 can be easily arranged.

（４）第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４が対向方向Ｘ１に延びているため、保護部２１が、対向方向Ｘ１で反るように変形してしまうことを抑制することができる。   (4) Since the 1st convex part 31, the 2nd convex part 32, the 3rd convex part 33, and the 4th convex part 34 are extended in the opposing direction X1, the protection part 21 warps in the opposing direction X1. It can suppress that it deform | transforms.

（５）保護部材２０は、仮想円Ｃ１の周方向において、第１周壁部２２の延長壁部２２ｂと第２周壁部２３との間が刳り貫かれている。よって、第１周壁部２２の延長壁部２２ｂと第２周壁部２３とが直接繋がっている場合に比べて、保護部材２０の体格が小さくなるとともに保護部材２０の重量の増加を抑えることができる。   (5) In the circumferential direction of the virtual circle C <b> 1, the protection member 20 has a space between the extended wall portion 22 b of the first peripheral wall portion 22 and the second peripheral wall portion 23. Therefore, compared with the case where the extension wall part 22b of the 1st surrounding wall part 22 and the 2nd surrounding wall part 23 are directly connected, the physique of the protection member 20 becomes small and the increase in the weight of the protection member 20 can be suppressed. .

（６）保護部２１は、第２凸部３２よりも延長壁部２２ｂ側に位置する第４凸部３４を有している。保護部２１における延長壁部２２ｂ側の部位は、仮想円Ｃ１の周方向において、第１周壁部２２の延長壁部２２ｂと第２周壁部２３との間が刳り貫かれているため、剛性が低下し易い部分であるが、第４凸部３４によって、剛性が高めることができ、衝突による外力に伴う保護部２１の変形をさらに生じ難くすることができる。   (6) The protection part 21 has the 4th convex part 34 located in the extended wall part 22b side rather than the 2nd convex part 32. FIG. Since the portion of the protective portion 21 on the side of the extension wall portion 22b is pierced between the extension wall portion 22b of the first peripheral wall portion 22 and the second peripheral wall portion 23 in the circumferential direction of the virtual circle C1, the rigidity is high. Although it is a portion that tends to decrease, the fourth convex portion 34 can increase the rigidity, and can further prevent deformation of the protective portion 21 due to external force due to a collision.

なお、上記実施形態は以下のように変更してもよい。
○ 実施形態において、保護部２１の外面２１ｂにおける保護部２１の厚み方向で第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４に対応する部位以外の部位にも凹部が形成されていてもよい。 In addition, you may change the said embodiment as follows.
In the embodiment, the portion other than the portions corresponding to the first convex portion 31, the second convex portion 32, the third convex portion 33, and the fourth convex portion 34 in the thickness direction of the protective portion 21 on the outer surface 21 b of the protective portion 21. Also, a recess may be formed.

○ 実施形態において、第１凸部３１、第２凸部３２、第３凸部３３、及び第４凸部３４が対向方向Ｘ１とは異なる方向に延びていてもよい。
○ 実施形態において、第１取付部２４及び第２取付部２５の配置位置は、特に限定されるものではない。また、保護部材２０は、ハウジング１１に取り付けられる取付部を一つだけ有している構成であってもよいし、３つ以上有している構成であってもよい。 In the embodiment, the first convex portion 31, the second convex portion 32, the third convex portion 33, and the fourth convex portion 34 may extend in a direction different from the facing direction X1.
(Circle) in embodiment, the arrangement position of the 1st attaching part 24 and the 2nd attaching part 25 is not specifically limited. Further, the protection member 20 may have a configuration having only one attachment portion attached to the housing 11, or may have a configuration having three or more.

○ 実施形態において、吸入ハウジング１３の外周面に、受け部２６が無くてもよく、保護部材２０は、当接部２２ｆが無い構成であってもよい。
○ 実施形態において、第１コネクタ接続部１７１及び第２コネクタ接続部１７２が、カバー１７から突出しておらず、例えば、吸入ハウジング１３の周壁１３ｂの外周面から外方に突出していてもよい。この場合、保護部材２０は、保護部材２０が吸入ハウジング１３に取り付けられるときに、第１コネクタ接続部１７１と干渉しないように、連繋外縁部２１３が第１コネクタ接続部１７１よりも第２コネクタ接続部１７２側に位置する形状になっていなくてもよい。また、保護部２１は、第２コネクタ接続部１７２との干渉を避ける逃げ部として機能する貫通孔２１ｈが無い構成であってもよい。 In the embodiment, the receiving portion 26 may not be provided on the outer peripheral surface of the suction housing 13, and the protection member 20 may be configured without the contact portion 22f.
In the embodiment, the first connector connection portion 171 and the second connector connection portion 172 may not protrude from the cover 17 and may protrude outward from the outer peripheral surface of the peripheral wall 13b of the suction housing 13, for example. In this case, when the protective member 20 is attached to the suction housing 13, the connecting outer edge portion 213 is connected to the second connector rather than the first connector connecting portion 171 so as not to interfere with the first connector connecting portion 171. The shape may not be located on the portion 172 side. Further, the protection part 21 may be configured without the through-hole 21h that functions as an escape part that avoids interference with the second connector connection part 172.

○ 実施形態において、保護部２１の形状は適宜変更してもよい。
○ 実施形態において、カバー１７に向かって突出するように凹ませた凹部の数は２つや３つであってもよいし、５つ以上であってもよい。 (Circle) in embodiment, you may change the shape of the protection part 21 suitably.
In the embodiment, the number of recesses recessed so as to protrude toward the cover 17 may be two or three, or may be five or more.

○ 実施形態において、圧縮部１４、電動モータ１５、及び駆動回路１６は、この順序でハウジング１１の軸方向に並んで配置されていなくてもよい。例えば、カバー１７が吸入ハウジング１３の周壁１３ｂの外周面に取り付けられており、周壁１３ｂの外周面とカバー１７とで区画された空間に駆動回路１６が収容されていてもよい。   In the embodiment, the compression unit 14, the electric motor 15, and the drive circuit 16 may not be arranged side by side in the axial direction of the housing 11 in this order. For example, the cover 17 may be attached to the outer peripheral surface of the peripheral wall 13 b of the suction housing 13, and the drive circuit 16 may be accommodated in a space defined by the outer peripheral surface of the peripheral wall 13 b and the cover 17.

○ 実施形態において、圧縮部１４は、固定スクロールと可動スクロールとで構成されるタイプに限らず、例えば、ピストンタイプやベーンタイプなどに変更してもよい。
○ 実施形態において、電動圧縮機１０は、車両空調装置に用いられなくてもよく、その他の空調装置に用いられてもよい。 In embodiment, the compression part 14 is not restricted to the type comprised by a fixed scroll and a movable scroll, For example, you may change into a piston type, a vane type, etc.
(Circle) in embodiment, the electric compressor 10 may not be used for a vehicle air conditioner, and may be used for another air conditioner.

１０…電動圧縮機、１１…ハウジング、１４…圧縮部、１５…電動モータ、１６…駆動回路、１７…カバー、２０…保護部材、２１…保護部、２１ｈ…逃げ部として機能する貫通孔、２２ｆ…当接部、２４…取付部である第１取付部、２５…取付部である第２取付部、２６…受け部、４１…凹部である第１凹部、４２…凹部である第２凹部、４３…凹部である第３凹部、４４…凹部である第４凹部、１７１…コネクタ接続部である第１コネクタ接続部、１７２…コネクタ接続部である第２コネクタ接続部、２１３…逃げ部として機能する連繋外縁部。   DESCRIPTION OF SYMBOLS 10 ... Electric compressor, 11 ... Housing, 14 ... Compression part, 15 ... Electric motor, 16 ... Drive circuit, 17 ... Cover, 20 ... Protection member, 21 ... Protection part, 21h ... Through-hole which functions as escape part, 22f A contact portion, 24 a first attachment portion that is an attachment portion, 25 a second attachment portion that is an attachment portion, 26 a receiving portion, 41 a first recess that is a recess, 42 a second recess that is a recess, 43: a third concave portion that is a concave portion, 44: a fourth concave portion that is a concave portion, 171: a first connector connecting portion that is a connector connecting portion, 172 ... a second connector connecting portion that is a connector connecting portion, 213 ... functions as a relief portion Connected outer edge.

Claims (3)

冷媒を圧縮する圧縮部と、
前記圧縮部を駆動する電動モータと、
前記電動モータを駆動する駆動回路と、
前記圧縮部及び前記電動モータを収容する筒状のハウジングと、
前記ハウジングに取り付けられ、前記ハウジングとの間に前記駆動回路を収容するカバーと、
衝突による外力から前記カバーを保護する保護部材と、を備え、
前記保護部材は、前記ハウジングに取り付けられる取付部と、前記カバーから離間して前記カバーに対向する位置に配置される板状の保護部と、を有する電動圧縮機であって、
前記保護部材は、前記ハウジングの直径方向に延在しており、
前記保護部には、前記カバーに向かって突出するように凹ませた複数の凹部が、前記保護部材の延在方向に沿って延在していることを特徴とする電動圧縮機。 A compression section for compressing the refrigerant;
An electric motor for driving the compression unit;
A drive circuit for driving the electric motor;
A cylindrical housing that houses the compression section and the electric motor;
A cover attached to the housing and containing the drive circuit between the housing and the housing;
A protective member that protects the cover from an external force caused by a collision,
The protection member is an electric compressor having an attachment portion attached to the housing and a plate-like protection portion disposed at a position facing the cover apart from the cover,
The protective member extends in a diameter direction of the housing;
The electric compressor according to claim 1, wherein a plurality of concave portions recessed in the protective portion so as to protrude toward the cover extend along an extending direction of the protective member. 前記ハウジングの外面には、受け部が突出しており、
前記保護部材は、衝突による外力を前記保護部が受けたときに、前記受け部に当接する当接部を有することを特徴とする請求項１に記載の電動圧縮機。 A receiving portion protrudes from the outer surface of the housing,
The electric compressor according to claim 1, wherein the protection member includes a contact portion that contacts the receiving portion when the protection portion receives an external force due to a collision. 前記ハウジング又は前記カバーは、外方に突出する筒状のコネクタ接続部を有し、
前記保護部は、前記コネクタ接続部との干渉を避ける逃げ部を有していることを特徴とする請求項１又は請求項２に記載の電動圧縮機。 The housing or the cover has a cylindrical connector connecting portion protruding outward,
3. The electric compressor according to claim 1, wherein the protection portion includes a clearance portion that avoids interference with the connector connection portion. 4.
JP2016254082A 2016-12-27 2016-12-27 Motor compressor Withdrawn JP2018105264A (en)

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US15/852,984 US20180180046A1 (en) 2016-12-27 2017-12-22 Electric compressor
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