JP2007182848A - Water pump device - Google Patents

Water pump device Download PDF

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JP2007182848A
JP2007182848A JP2006002595A JP2006002595A JP2007182848A JP 2007182848 A JP2007182848 A JP 2007182848A JP 2006002595 A JP2006002595 A JP 2006002595A JP 2006002595 A JP2006002595 A JP 2006002595A JP 2007182848 A JP2007182848 A JP 2007182848A
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bearing
water pump
pump device
shaft
resin
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Shinichi Ino
伸一 伊能
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NSK Ltd
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NSK Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water pump device capable of reducing unevenness in a bearing clearance after assembly, reducing its weight, and improving assembly property and productivity. <P>SOLUTION: This water pump device 10 is constituted by molding a resin-made pulley 14 on an outer peripheral face of a bearing 13 integrally, arranging a shaft 15 rotating integrally with the resin-made pulley 14 on an inner peripheral face side of the bearing 13 by passing through it, providing a connection member 24 extending outward in the radial direction in an end part of the shaft 15, and fitting end faces in the axial direction of the connection member 24 and the resin-made pulley 14 mutually. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、水ポンプ装置に関するものであり、例えば、自動車のエンジン等に使用される外輪回転の水ポンプ装置に関する。   The present invention relates to a water pump device, for example, an outer ring rotating water pump device used for an engine of an automobile or the like.

近年、環境問題が重視される中、自動車においても燃費向上が開発課題となることが多く、各装置／部品の軽量化や性能向上、コスト低減が急務となっている。その中でも自動車に使用される水ポンプ装置は、専用設計されたものが殆どで、転動体がローラとボールとで構成されるタイプと両列ともボールで構成されるタイプとの２つのタイプがある。また、シャフトが内輪軌道面を兼ねるシャフト一体型の水ポンプ装置とすることにより、装置の組立性向上に貢献している（例えば、特許文献１〜７参照）。   In recent years, with increasing emphasis on environmental issues, improvement of fuel efficiency is often a development issue for automobiles, and there is an urgent need for weight reduction, performance improvement, and cost reduction of each device / part. Among them, most of the water pump devices used in automobiles are specially designed, and there are two types, a type in which the rolling elements are composed of rollers and balls, and a type in which both rows are composed of balls. . Moreover, the shaft-integrated water pump device in which the shaft also serves as the inner ring raceway surface contributes to an improvement in the assembly of the device (see, for example, Patent Documents 1 to 7).

従来の水ポンプ装置は、アルミダイカストホディ及びそれに嵌合される支持軸受、支持軸受への冷却水（ロングライフクーラント：ＬＬＣ）の浸入を遮断するメカニカルシール、冷却水を循環させるベーン、プーリを締結するハブ及びプーリ等、部品点数が多く、重量増加やコスト増となる場合がある。   The conventional water pump device has an aluminum die-casting body, a support bearing fitted to the aluminum die-casting body, a mechanical seal that blocks the ingress of cooling water (long life coolant: LLC) into the support bearing, a vane that circulates the cooling water, and a pulley. There are cases where the number of parts such as hubs and pulleys to be increased is increased, resulting in an increase in weight and cost.

また、支持軸受がアルミダイカストボディに嵌合されるため、低温から高温まで軸受外輪のクリープ防止を狙って、高温時でもしめしろが残るようなしまりばめ設定にしている。また、水ポンプ装置の機構特性として、メカニカルシールのシール性安定化のため、支持軸受のガタはできるだけ小さい方が好ましい。   In addition, since the support bearing is fitted to the aluminum die-cast body, the interference fit setting is set so that the interference remains even at high temperatures in order to prevent creep of the bearing outer ring from low to high temperatures. Further, as a mechanical characteristic of the water pump device, the backlash of the support bearing is preferably as small as possible in order to stabilize the sealing performance of the mechanical seal.

しかしながら、アルミニウムと軸受鋼との材料線膨張係数の違いから、低温時と高温時とで軸受外輪の面圧に大きく差がでるため、その結果、軸受内部すきまは、温度及び嵌合条件の影響を大きく受けて、それに伴い変化する。   However, due to the difference in material linear expansion coefficient between aluminum and bearing steel, there is a large difference in the surface pressure of the bearing outer ring at low temperature and high temperature. As a result, the bearing internal clearance is affected by temperature and fitting conditions. Is greatly affected and changes accordingly.

例えば、図５に示す水ポンプ装置５０は、ボディ１にアルミダイカストを用い、フロント列がローラ、リア列がボール、若しくは両列ともボールのシャフト一体型軸受２を装着している。プーリ３と一体回転するシャフト４の回転によりベーン５を回し、冷却水を循環させる。現状、もっともポピュラーな形式であるが、軽量化、部品点数の削減、コスト削減等の課題がある。なお、図中６はメカニカルシールである。   For example, the water pump device 50 shown in FIG. 5 uses an aluminum die cast for the body 1 and is equipped with a roller integrated at the front row, a ball at the rear row, or a ball integrated shaft bearing 2 in both rows. The vane 5 is rotated by the rotation of the shaft 4 that rotates integrally with the pulley 3 to circulate the cooling water. At present, it is the most popular format, but there are problems such as weight reduction, reduction in the number of parts, and cost reduction. In the figure, 6 is a mechanical seal.

一方、アルミダイカストボディに支持軸受が嵌合される仕様とは異なる低コスト／軽量化仕様の水ポンプ装置が開発され、徐々に市場に投入されつつある。
例えば、図６に示す水ポンプ装置６０は、プレス加工したプーリ３及びボディ１を用い、軸受２の外輪２ａにプーリ３を外嵌し、軸受２の内輪２ｂにボディ１を内嵌したものであるが、アルミダイカストほどの線膨張係数の差はないものの、プレス加工によるプーリ３及びボディ１の形状的制限やプレス精度等の嵌合相手部材の条件により、嵌合部の公差や真円度等の精度面においてバラツキを生じ、軸受残留すきまの適正狙い値のレンジが広くなってしまう（例えば、特許文献８参照）。 On the other hand, low-cost / light-weight specifications of water pump devices different from specifications in which support bearings are fitted to aluminum die-cast bodies have been developed and are gradually being put on the market.
For example, the water pump device 60 shown in FIG. 6 uses a press-processed pulley 3 and body 1, the pulley 3 is externally fitted to the outer ring 2 a of the bearing 2, and the body 1 is internally fitted to the inner ring 2 b of the bearing 2. Although there is no difference in linear expansion coefficient as aluminum die casting, tolerance and roundness of the fitting part are dependent on the conditions of the mating mating member such as the shape limitation of the pulley 3 and the body 1 by pressing and the press accuracy. As a result, the range of the appropriate target value of the bearing residual clearance is widened (for example, see Patent Document 8).

また、図７に示す水ポンプ装置７０は、リング３ａが内周部に埋め込まれたプーリ３とシャフト４とが樹脂の一体成形品とされ、軸受２の外輪２ａにリング３ａを介してプーリ３が嵌合されたものであるが、樹脂射出時でのリング３ａの変形及びリング３ａの寸法精度誤差等の積み重ねにより、軸受すきまへの影響が大きくなる（例えば、特許文献９参照）。   Further, in the water pump device 70 shown in FIG. 7, the pulley 3 in which the ring 3a is embedded in the inner peripheral portion and the shaft 4 are integrally formed of resin, and the pulley 3 is connected to the outer ring 2a of the bearing 2 via the ring 3a. However, due to the deformation of the ring 3a at the time of resin injection and the accumulation of dimensional accuracy errors of the ring 3a, the influence on the bearing clearance is increased (see, for example, Patent Document 9).

そこで、上記のような不都合を解消するために、図８に示す水ポンプ装置８０が提案されており、この水ポンプ装置８０は、ボディ１に軸受２を介して支持されている樹脂製のプーリ３と、プーリ３と一体成形された樹脂製のシャフト４と、を備え、軸受２及びプーリ３が、軸受２、プーリ３及びシャフト４のインサート射出成形によって結合されたものである。また、プーリ３とシャフト４とは、シャフト４の端部から径方向外方に延びるウェブ７を介して一体に連結される（例えば、特許文献１０参照）。   Therefore, in order to eliminate the above inconvenience, a water pump device 80 shown in FIG. 8 has been proposed. This water pump device 80 is a resin pulley supported on the body 1 via the bearing 2. 3 and a resin shaft 4 integrally formed with the pulley 3, and the bearing 2 and the pulley 3 are joined by insert injection molding of the bearing 2, the pulley 3 and the shaft 4. Further, the pulley 3 and the shaft 4 are integrally connected via a web 7 extending radially outward from the end of the shaft 4 (see, for example, Patent Document 10).

特開２００２−８９４８６号公報JP 2002-89486 A 特開２００３−２０６８８８号公報JP 2003-206888 A 特開２００３−２１４３８２号公報JP 2003-214382 A 特開２００３−２５４２９０号公報JP 2003-254290 A 特開２００４−５２７２３号公報JP 2004-52723 A 特開２００４−８４６１０号公報JP 2004-84610 A 特開２００４−１２４７１４号公報JP 2004-124714 A 特開２００３−２５４２８９号公報JP 2003-254289 A 特開２００２−３４９４８１号公報Japanese Patent Laid-Open No. 2002-349481 特開２００４−２３２４７０号公報JP 2004-232470 A

しかしながら、上記特許文献１０に記載の水ポンプ装置８０においては、軸受２、プーリ３及びシャフト４が、インサート射出成形によって一体的に形成されるため、インサート射出成形後の軸受２とウェブ７との間の部分の型抜きが難しく、生産性が低下してしまう可能性がある。   However, in the water pump device 80 described in Patent Document 10, since the bearing 2, the pulley 3, and the shaft 4 are integrally formed by insert injection molding, the bearing 2 and the web 7 after the insert injection molding are formed. It is difficult to punch the part between them, and productivity may be reduced.

本発明は、このような不都合を解消するためになされたものであり、その目的は、組立後の軸受すきまのバラツキを小さくすることができ、軽量化及び組立性の向上を図ることができ、生産性の向上を図ることができる水ポンプ装置を提供することにある。   The present invention has been made to eliminate such inconveniences, and its purpose is to reduce the variation in the bearing clearance after assembly, and to achieve weight reduction and improvement in assembly. An object of the present invention is to provide a water pump device capable of improving productivity.

本発明の上記目的は、下記の構成により達成される。
（１） 軸受の外周面に樹脂製プーリが一体成形されると共に、軸受の内周面側に樹脂製プーリと一体に回転するシャフトが貫通配置される水ポンプ装置であって、シャフトの端部に径方向外方に延びる連結部材を設けると共に、連結部材と樹脂製プーリの軸方向端面とを嵌合することを特徴とする水ポンプ装置。 The above object of the present invention can be achieved by the following constitution.
(1) A water pump device in which a resin pulley is integrally formed on the outer peripheral surface of a bearing, and a shaft that rotates integrally with the resin pulley is provided on the inner peripheral surface side of the bearing. The water pump device is characterized in that a connecting member extending radially outward is provided on the base member, and the connecting member and the axial end face of the resin pulley are fitted.

（２） 軸受の内輪にボディの支持筒を圧入すると共に、支持筒とシャフトとの間にメカニカルシールを介装することを特徴とする（１）に記載の水ポンプ装置。   (2) The water pump device according to (1), wherein a body support cylinder is press-fitted into an inner ring of the bearing, and a mechanical seal is interposed between the support cylinder and the shaft.

（３） シャフト及び連結部材が樹脂製であることを特徴とする（１）又は（２）に記載の水ポンプ装置。   (3) The water pump device according to (1) or (2), wherein the shaft and the connecting member are made of resin.

本発明の水ポンプ装置によれば、シャフトの端部に径方向外方に延びる連結部材を設けると共に、連結部材と樹脂製プーリの軸方向端面とを嵌合するため、シャフトと樹脂製プーリとを連結部材により一体的に連結できると共に、軸受及び樹脂製プーリとシャフト及び連結部材とを別々に射出成形することができるので、射出成形後の型抜きが容易になり、生産性の向上を図ることができる。   According to the water pump device of the present invention, the shaft and the resin pulley are provided to provide the connecting member extending radially outward at the end of the shaft and to fit the connecting member and the axial end surface of the resin pulley. Can be integrally connected by the connecting member, and the bearing and the resin pulley, the shaft and the connecting member can be separately injection-molded, so that the die-cutting after the injection molding becomes easy and the productivity is improved. be able to.

また、本発明の水ポンプ装置によれば、軸受の外周面に樹脂製プーリが一体成形されるため、従来のような、軸受の外輪にプーリを嵌合することによる軸受すきまの変化がなくなるので（射出成形後の軸受すきまを管理）、この嵌合後の軸受すきまのバラツキは軸受の内周面側の嵌合条件のみになる。これにより、装置組立後の軸受すきまのバラツキが小さくなり、設計狙い値付近のすきまで安定した運転が可能となるので、メカニカルシールのシール性能を安定化させることができる。   Further, according to the water pump device of the present invention, since the resin pulley is integrally formed on the outer peripheral surface of the bearing, there is no change in the bearing clearance caused by fitting the pulley to the outer ring of the bearing as in the prior art. (Management of bearing clearance after injection molding) The variation in bearing clearance after fitting is only the fitting condition on the inner peripheral surface side of the bearing. As a result, the variation in the bearing clearance after the assembly of the device is reduced, and stable operation is possible up to the clearance near the design target value, so that the sealing performance of the mechanical seal can be stabilized.

また、本発明の水ポンプ装置によれば、少なくともプーリに樹脂材料を用いているため、装置の軽量化を図ることができると共に、プレス加工では困難な複雑な形状にも対応することができる。   Further, according to the water pump device of the present invention, since a resin material is used for at least the pulley, the device can be reduced in weight and can cope with a complicated shape difficult to press.

さらに、本発明の水ポンプ装置によれば、軸受と樹脂製プーリとがユニット化されるため、部品点数が削減されて、製造コストを削減でき、装置の組立性の向上を図ることができる。   Furthermore, according to the water pump device of the present invention, since the bearing and the resin pulley are unitized, the number of parts can be reduced, the manufacturing cost can be reduced, and the assembly of the device can be improved.

以下、本発明に係る水ポンプ装置の各実施形態について、図面を参照して詳細に説明する。   Hereinafter, each embodiment of the water pump device concerning the present invention is described in detail with reference to drawings.

（第１実施形態）
まず、図１及び図２を参照して、本発明に係る水ポンプ装置の第１実施形態について説明する。
図１は本発明に係る水ポンプ装置の第１実施形態を示す図であり、（ａ）はフランジ部を軸方向から見た図、（ｂ）は（ａ）のＡ−Ａ線矢視断面図、図２は図１のフランジ部と樹脂製プーリとの嵌合構造の変形例を示す要部拡大断面図である。 (First embodiment)
First, with reference to FIG.1 and FIG.2, 1st Embodiment of the water pump apparatus which concerns on this invention is described.
1A and 1B are views showing a first embodiment of a water pump device according to the present invention, wherein FIG. 1A is a view of a flange portion viewed from an axial direction, and FIG. 1B is a cross-sectional view taken along line AA in FIG. FIG. 2 is an enlarged cross-sectional view of a main part showing a modification of the fitting structure between the flange portion and the resin pulley shown in FIG.

本実施形態の水ポンプ装置１０は、図１に示すように、不図示のエンジンの側面部に取り付けられるポンプボディ（ボディ）１１と、ポンプボディ１１の支持筒１２に圧入嵌合される軸受１３と、軸受１３の外周面にインサート成形等により一体に成形される樹脂製プーリ１４と、軸受１３の内周面側に貫通配置され、樹脂製プーリ１４と一体に回転するシャフト１５と、支持筒１２とシャフト１５との間に介装されるメカニカルシール１６と、シャフト１５の軸方向端部に取り付けられるベーン１７と、を備えている。   As shown in FIG. 1, the water pump device 10 according to the present embodiment includes a pump body (body) 11 attached to a side portion of an engine (not shown) and a bearing 13 press-fitted into a support cylinder 12 of the pump body 11. A resin pulley 14 integrally formed on the outer peripheral surface of the bearing 13 by insert molding or the like, a shaft 15 penetratingly arranged on the inner peripheral surface side of the bearing 13 and rotating integrally with the resin pulley 14, and a support cylinder 12 and a mechanical seal 16 interposed between the shaft 15 and a vane 17 attached to the axial end of the shaft 15.

軸受１３は、本実施形態では、単列の玉軸受が用いられており、外輪１８と内輪１９との間に複数の転動体２０が転動可能に配設されている。外輪１８の外周面には、周溝２１が形成されており、この周溝２１に樹脂製プーリ１４の内周面側の樹脂を入り込ませてクリープを防止するようにしている。   In the present embodiment, a single-row ball bearing is used as the bearing 13, and a plurality of rolling elements 20 are arranged between the outer ring 18 and the inner ring 19 so as to allow rolling. A circumferential groove 21 is formed on the outer circumferential surface of the outer ring 18, and the resin on the inner circumferential surface side of the resin pulley 14 is inserted into the circumferential groove 21 to prevent creep.

樹脂製プーリ１４は、外輪１８の軸方向両端部を挟み込むように外輪１８に装着されており、その外周面には、ベルトが掛け渡されるベルト溝２２が形成されている。また、樹脂製プーリ１４の軸方向端面（図１（ｂ）の左端面）には、複数の嵌合凸部２３が円周方向に所定の間隔を存して形成されている。   The resin pulley 14 is attached to the outer ring 18 so as to sandwich both axial ends of the outer ring 18, and a belt groove 22 is formed on the outer peripheral surface of the resin pulley 14. A plurality of fitting projections 23 are formed at predetermined intervals in the circumferential direction on the axial end surface of the resin pulley 14 (the left end surface in FIG. 1B).

シャフト１５は、本実施形態では合成樹脂で形成されており、その軸方向端部（図１（ｂ）の左端部）には、径方向外方に延びるフランジ部（連結部材）２４が一体に形成される。このフランジ部２４には、樹脂製プーリ１４の嵌合凸部２３を嵌合させるための嵌合穴２５が嵌合凸部２３に対応する位置にそれぞれ形成されている。なお、シャフト１５及びフランジ部２４は、鉄やステンレスなどの各種金属で形成されていてもよい。   The shaft 15 is formed of synthetic resin in the present embodiment, and a flange portion (connecting member) 24 extending radially outward is integrally formed at an axial end portion (left end portion in FIG. 1B). It is formed. In the flange portion 24, fitting holes 25 for fitting the fitting projections 23 of the resin pulley 14 are formed at positions corresponding to the fitting projections 23. In addition, the shaft 15 and the flange part 24 may be formed with various metals, such as iron and stainless steel.

そして、軸受１３と樹脂製プーリ１４との一体成形品に対して、シャフト１５を軸受１３の内輪１９に貫通配置し、樹脂製プーリ１４の嵌合凸部２３とフランジ部２４の嵌合穴２５とを嵌合することによって、樹脂製プーリ１４とシャフト１５とがフランジ部２４を介して一体的に連結される。   And with respect to the integrally molded product of the bearing 13 and the resin pulley 14, the shaft 15 is disposed through the inner ring 19 of the bearing 13, and the fitting convex portion 23 of the resin pulley 14 and the fitting hole 25 of the flange portion 24. , The resin pulley 14 and the shaft 15 are integrally connected via the flange portion 24.

従って、本実施形態の水ポンプ装置１０によれば、シャフト１５の端部に径方向外方に延びるフランジ部２４を設けると共に、フランジ部２４の嵌合穴２５と樹脂製プーリ１４の軸方向端面の嵌合凸部２３とを嵌合するため、シャフト１５と樹脂製プーリ１４とをフランジ部２４により一体的に連結できると共に、軸受１３及び樹脂製プーリ１４とシャフト１５及びフランジ部２４とを別々に射出成形することができるので、射出成形後の型抜きが容易になり、生産性の向上を図ることができる。   Therefore, according to the water pump device 10 of the present embodiment, the flange portion 24 extending radially outward is provided at the end portion of the shaft 15, and the fitting hole 25 of the flange portion 24 and the axial end surface of the resin pulley 14 are provided. The shaft 15 and the resin pulley 14 can be integrally connected to each other by the flange portion 24, and the bearing 13, the resin pulley 14, the shaft 15 and the flange portion 24 are separately provided. Therefore, it is easy to perform die-cutting after injection molding, and productivity can be improved.

また、本実施形態の水ポンプ装置１０によれば、軸受１３の外周面に樹脂製プーリ１４が一体成形されるため、従来のような、軸受の外輪にプーリを嵌合することによる軸受すきまの変化がなくなるので（射出成形後の軸受すきまを管理）、この嵌合後の軸受すきまのバラツキは、軸受１３の内輪１９とポンプボディ１１の支持筒１２との嵌合条件のみになる。これにより、装置組立後の軸受すきまのバラツキが小さくなり、設計狙い値付近のすきまで安定した運転が可能となるので、メカニカルシール１６のシール性能を安定化させることができる。   Further, according to the water pump device 10 of the present embodiment, the resin pulley 14 is integrally formed on the outer peripheral surface of the bearing 13, so that the bearing clearance can be reduced by fitting the pulley to the outer ring of the bearing as in the prior art. Since there is no change (the bearing clearance after injection molding is managed), the variation in the bearing clearance after the fitting is only the fitting condition between the inner ring 19 of the bearing 13 and the support cylinder 12 of the pump body 11. As a result, the variation in the bearing clearance after the assembly of the device is reduced, and stable operation is possible up to the clearance near the design target value, so that the sealing performance of the mechanical seal 16 can be stabilized.

また、本実施形態の水ポンプ装置１０によれば、樹脂製プーリ１４、シャフト１５及びフランジ部２４に樹脂材料を用いているため、装置の軽量化を図ることができると共に、プレス加工では困難な複雑な形状にも対応することができる。   Further, according to the water pump device 10 of the present embodiment, since the resin material is used for the resin pulley 14, the shaft 15, and the flange portion 24, the device can be reduced in weight and difficult to press. Even complicated shapes can be handled.

また、本実施形態の水ポンプ装置１０によれば、軸受１３と樹脂製プーリ１４とがユニット化されるため、部品点数を削減することができるので、製造コストを削減でき、装置の組立性の向上を図ることができる。   Further, according to the water pump device 10 of the present embodiment, since the bearing 13 and the resin pulley 14 are unitized, the number of parts can be reduced, so that the manufacturing cost can be reduced and the assembly of the device can be reduced. Improvements can be made.

さらに、本実施形態の水ポンプ装置１０によれば、ポンプボディ１１の支持筒１２に、外輪１８の外周面に樹脂製プーリ１４がインサート成形される軸受１３を圧入嵌合した後、内輪１９の内周面側にシャフト１５を挿入し、樹脂製プーリ１４の嵌合凸部２３とフランジ部２４の嵌合穴２５とを嵌合するため、上記圧入嵌合する際に使用する圧入ジグを挿入するための貫通穴をフランジ部２４に形成する必要がない。   Furthermore, according to the water pump device 10 of the present embodiment, after the bearing 13 in which the resin pulley 14 is insert-molded on the outer peripheral surface of the outer ring 18 is press-fitted into the support cylinder 12 of the pump body 11, The shaft 15 is inserted on the inner peripheral surface side, and a press-fitting jig used for the press-fitting is inserted to fit the fitting convex portion 23 of the resin pulley 14 and the fitting hole 25 of the flange portion 24. There is no need to form a through hole in the flange portion 24.

なお、本実施形態の変形例として、図２に示すように、樹脂製プーリ１４の嵌合凸部２３の先端部に、フランジ部２４の嵌合穴２５の周囲を係止する弾性変形可能なテーパ形状の係止部２６を設けるようにしてもよい。この場合、嵌合穴２５から嵌合凸部２３が抜けてしまうことを防止できる。   As a modification of the present embodiment, as shown in FIG. 2, elastic deformation is possible in which the periphery of the fitting hole 25 of the flange portion 24 is locked to the distal end portion of the fitting convex portion 23 of the resin pulley 14. A tapered locking portion 26 may be provided. In this case, it is possible to prevent the fitting convex portion 23 from coming off from the fitting hole 25.

（第２実施形態）
次に、図３及び図４を参照して、本発明に係る水ポンプ装置の第２実施形態について説明する。なお、第１実施形態と同一又は同等部分については、図面に同一符号を付してその説明を省略或いは簡略化する。
図３は本発明に係る水ポンプ装置の第２実施形態を示す図であり、（ａ）はフランジ部を軸方向から見た図、（ｂ）は（ａ）のＢ−Ｂ線矢視断面図、図４は図３のフランジ部と樹脂製プーリとの嵌合構造の変形例を示す要部拡大断面図である。 (Second Embodiment)
Next, with reference to FIG.3 and FIG.4, 2nd Embodiment of the water pump apparatus which concerns on this invention is described. In addition, about the same or equivalent part as 1st Embodiment, the same code | symbol is attached | subjected to drawing, and the description is abbreviate | omitted or simplified.
FIG. 3: is a figure which shows 2nd Embodiment of the water pump apparatus which concerns on this invention, (a) is the figure which looked at the flange part from the axial direction, (b) is the BB arrow directional cross-section of (a). FIGS. 4 and 4 are enlarged cross-sectional views of main parts showing a modification of the fitting structure between the flange portion and the resin pulley shown in FIG.

本実施形態の水ポンプ装置３０は、図３に示すように、樹脂製プーリ１４の軸方向端面（図３（ｂ）の左端面）に、複数の嵌合穴３１が円周方向に所定の間隔を存して形成されると共に、フランジ部２４の軸方向端面（図３（ｂ）の右端面）に、樹脂製プーリ１４の嵌合穴３１に嵌合させるための嵌合凸部３２が嵌合穴３１に対応する位置にそれぞれ形成されている。   As shown in FIG. 3, the water pump device 30 of the present embodiment has a plurality of fitting holes 31 in the circumferential direction on the axial end surface of the resin pulley 14 (the left end surface of FIG. 3B). A fitting convex portion 32 is formed on the axial end surface of the flange portion 24 (the right end surface in FIG. 3B) to be fitted into the fitting hole 31 of the resin pulley 14. Each is formed at a position corresponding to the fitting hole 31.

そして、軸受１３と樹脂製プーリ１４との一体成形品に対して、シャフト１５を軸受１３の内輪１９に貫通配置し、樹脂製プーリ１４の嵌合穴３１とフランジ部２４の嵌合凸部３２とを嵌合することによって、樹脂製プーリ１４とシャフト１５とがフランジ部２４を介して一体的に連結される。
その他の構成及び作用効果については、上記第１実施形態と同様である。 And with respect to the integrally molded product of the bearing 13 and the resin pulley 14, the shaft 15 is disposed through the inner ring 19 of the bearing 13, and the fitting hole 31 of the resin pulley 14 and the fitting convex portion 32 of the flange portion 24. , The resin pulley 14 and the shaft 15 are integrally connected via the flange portion 24.
About another structure and an effect, it is the same as that of the said 1st Embodiment.

なお、本実施形態の変形例として、図４に示すように、フランジ部２４の嵌合凸部３２の外周面に係止溝３３を設けると共に、樹脂製プーリ１４の嵌合穴３１の内周面に嵌合凸部３２の係止溝３３を係止する弾性変形可能なテーパ形状の係止片３４を設けるようにしてもよい。この場合、嵌合穴３１から嵌合凸部３２が抜けてしまうことを防止できる。   As a modification of the present embodiment, as shown in FIG. 4, a locking groove 33 is provided on the outer peripheral surface of the fitting convex portion 32 of the flange portion 24 and the inner periphery of the fitting hole 31 of the resin pulley 14. An elastically deformable tapered locking piece 34 for locking the locking groove 33 of the fitting convex portion 32 may be provided on the surface. In this case, it is possible to prevent the fitting convex portion 32 from coming off from the fitting hole 31.

なお、本発明は、前述した各実施形態に限定されるものではなく、適宜、変形、改良等が可能である。
例えば、本実施形態では、正面掛けタイプのプーリを装備した水ポンプ装置に本発明を適用した場合を例示したが、これに代えて、背面掛けタイプのプーリを装備した水ポンプ装置に本発明を適用してもよい。 In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
For example, in the present embodiment, the case where the present invention is applied to a water pump device equipped with a front-hanging type pulley is illustrated, but instead, the present invention is applied to a water pump device equipped with a back-hanging type pulley. You may apply.

本発明に係る水ポンプ装置の第１実施形態を示す図であり、（ａ）はフランジ部を軸方向から見た図、（ｂ）は（ａ）のＡ−Ａ線矢視断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment of the water pump apparatus which concerns on this invention, (a) is the figure which looked at the flange part from the axial direction, (b) is AA arrow sectional drawing of (a). . 図１のフランジ部と樹脂製プーリとの嵌合構造の変形例を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the modification of the fitting structure of the flange part and resin pulley of FIG. 本発明に係る水ポンプ装置の第２実施形態を示す図であり、（ａ）はフランジ部を軸方向から見た図、（ｂ）は（ａ）のＢ−Ｂ線矢視断面図である。It is a figure which shows 2nd Embodiment of the water pump apparatus which concerns on this invention, (a) is the figure which looked at the flange part from the axial direction, (b) is a BB arrow directional cross-sectional view of (a). . 図３のフランジ部と樹脂製プーリとの嵌合構造の変形例を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the modification of the fitting structure of the flange part of FIG. 3, and resin pulleys. 従来の水ポンプ装置の一例を示す断面図である。It is sectional drawing which shows an example of the conventional water pump apparatus. 従来の他の水ポンプ装置を示す断面図である。It is sectional drawing which shows the other conventional water pump apparatus. 従来の他の水ポンプ装置を示す断面図である。It is sectional drawing which shows the other conventional water pump apparatus. 従来の他の水ポンプ装置を示す断面図である。It is sectional drawing which shows the other conventional water pump apparatus.

符号の説明Explanation of symbols

１０，３０ 水ポンプ装置
１１ ポンプボディ（ボディ）
１２ 支持筒
１３ 軸受（玉軸受）
１４ 樹脂製プーリ
１５ シャフト
１６ メカニカルシール
１７ ベーン
１８ 外輪
１９ 内輪
２０ 転動体
２１ 周溝
２２ ベルト溝
２３，３２ 嵌合凸部
２４ フランジ部
２５，３１ 嵌合穴
２６ 係止部
３３ 係止溝
３４ 係止片 10, 30 Water pump device 11 Pump body (body)
12 Support cylinder 13 Bearing (ball bearing)
DESCRIPTION OF SYMBOLS 14 Resin pulley 15 Shaft 16 Mechanical seal 17 Vane 18 Outer ring 19 Inner ring 20 Rolling body 21 Circumferential groove 22 Belt groove 23,32 Fitting convex part 24 Flange part 25,31 Fitting hole 26 Locking part 33 Locking groove 34 Engagement Fragment

Claims (3)

軸受の外周面に樹脂製プーリが一体成形されると共に、軸受の内周面側に前記樹脂製プーリと一体に回転するシャフトが貫通配置される水ポンプ装置であって、
前記シャフトの端部に径方向外方に延びる連結部材を設けると共に、
前記連結部材と前記樹脂製プーリの軸方向端面とを嵌合することを特徴とする水ポンプ装置。 A water pump device in which a resin pulley is integrally formed on the outer peripheral surface of the bearing, and a shaft that rotates integrally with the resin pulley is penetratingly disposed on the inner peripheral surface side of the bearing,
While providing a connecting member extending radially outward at the end of the shaft,
The water pump device, wherein the connecting member and the axial end surface of the resin pulley are fitted. 前記軸受の内輪にボディの支持筒を圧入すると共に、前記支持筒と前記シャフトとの間にメカニカルシールを介装することを特徴とする請求項１に記載の水ポンプ装置。   The water pump device according to claim 1, wherein a support cylinder of a body is press-fitted into an inner ring of the bearing, and a mechanical seal is interposed between the support cylinder and the shaft. 前記シャフト及び前記連結部材が樹脂製であることを特徴とする請求項１又は２に記載の水ポンプ装置。   The water pump device according to claim 1, wherein the shaft and the connecting member are made of resin.
JP2006002595A 2006-01-10 2006-01-10 Water pump device Pending JP2007182848A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016060354A (en) * 2014-09-18 2016-04-25 三菱電機Ｆａ産業機器株式会社 Wheeled gear motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016060354A (en) * 2014-09-18 2016-04-25 三菱電機Ｆａ産業機器株式会社 Wheeled gear motor

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