JP2009002316A - Gear pump or motor - Google Patents

Gear pump or motor Download PDF

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JP2009002316A
JP2009002316A JP2007166857A JP2007166857A JP2009002316A JP 2009002316 A JP2009002316 A JP 2009002316A JP 2007166857 A JP2007166857 A JP 2007166857A JP 2007166857 A JP2007166857 A JP 2007166857A JP 2009002316 A JP2009002316 A JP 2009002316A
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gear
shaft
housing
driven
drive
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JP2007166857A
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Yuki Hagino
勇紀 萩野
Kenichi Okada
健一 岡田
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Shimadzu Corp
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Shimadzu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To reduce working manhour or assembly manhour in manufacturing and to decrease the number of parts in a gear pump or a motor provided with a casing with a body forming a gear storage chamber and a cover capable of blocking the gear storage chamber while being detachably attached to this body, a gear stored in the gear storage chamber, side plates attached respectively to both side surfaces of this gear, and a shaft separated from the gear and journaling the gear while passing therethrough. <P>SOLUTION: The driving shaft 4 journaling the driving gear 2 is provided with a flange body 41 regulating the relative movement of the driving shaft 4 in a stretching direction between the driving shaft 4 and the driving gear 2. Moreover, the driving gear 2 is provided with a flange storage recess 2x capable of storing the flange body 41. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、各種の油圧機器分野などにおいて利用される歯車ポンプ又はモータに関する。   The present invention relates to a gear pump or a motor used in various hydraulic equipment fields.

各種の油圧機器分野などにおいて利用される歯車ポンプ又はモータにおいて、焼結金属またはその他の方法により歯車を単独で形成することが考えられている。このような歯車を採用する場合、歯車と該歯車を軸支する支軸とは別体に構成し、歯車の軸方向への移動を規制すべく支軸に止め輪やピン等の移動規制手段を取り付けるようにすることが考えられる(例えば、特許文献1、2を参照)。   In gear pumps or motors used in various hydraulic equipment fields, etc., it is considered to form a gear independently by using sintered metal or other methods. When such a gear is employed, the gear and the support shaft that supports the gear are configured separately, and a movement restricting means such as a retaining ring or a pin is provided on the support shaft in order to restrict the movement of the gear in the axial direction. It is conceivable to attach (see, for example, Patent Documents 1 and 2).

このような構成の一例として、中央縦断面図を図4、図4の要部を拡大した図を図5に示すような以下の態様が考えられる。   As an example of such a configuration, there can be considered the following modes as shown in FIG. 4 showing a central longitudinal sectional view and FIG. 5 showing an enlarged view of the main part of FIG.

この態様に係る歯車ポンプは、歯車収納室X111を形成するボディX11及びこのボディX11に着脱可能に装着され前記歯車収納室X111を閉塞可能なカバーX12を有するケーシングX1と、前記歯車収納室X111に収納してなる駆動歯車X2及び従動歯車X3と、これら駆動歯車X2及び従動歯車X3の両側面にそれぞれ添接させてなる側板X6、X6と、前記駆動歯車X2と別体であり駆動歯車X2を貫通した状態で該駆動歯車X2を軸支する駆動軸X4と、前記従動歯車X3と別体であり従動歯車X3を貫通した状態で該従動歯車X3を軸支する従動軸X5とを具備する。そして、前記駆動軸X4には止め輪収納溝X4x、X4xを2箇所に設け、これら2箇所の止め輪収納溝X4x、X4x間に駆動歯車X2を配した状態で2箇所の止め輪収納溝X4x、X4xに止め輪X7、X7を取り付けるようにしている。また、前記従動軸X5にも止め輪収納溝X5x、X5xを2箇所に設け、これら2箇所の止め輪収納溝X5x、X5x間に従動歯車X3を配した状態で2箇所の止め輪収納溝X5x、X5xに止め輪X7、X7を取り付けるようにしている。そして、側板X6には、止め輪X7との干渉を防ぐべくこの止め輪X7を内部に収納可能な止め輪収納溝X6xを設けている。
特開平10−184560号公報 実開平6−67878号公報
The gear pump according to this aspect includes a body X11 that forms a gear housing chamber X111, a casing X1 that is detachably attached to the body X11 and can close the gear housing chamber X111, and a gear X in the gear housing chamber X111. The drive gear X2 and the driven gear X3 that are housed, the side plates X6 and X6 that are respectively brought into contact with both side surfaces of the drive gear X2 and the driven gear X3, and the drive gear X2 that is separate from the drive gear X2. A drive shaft X4 that pivotally supports the drive gear X2 in a penetrating state, and a driven shaft X5 that is a separate body from the driven gear X3 and pivotally supports the driven gear X3 while penetrating the driven gear X3. The drive shaft X4 is provided with two retaining ring storage grooves X4x, X4x, and two retaining ring storage grooves X4x with the drive gear X2 disposed between the two retaining ring storage grooves X4x, X4x. , X4x is attached with retaining rings X7, X7. The driven shaft X5 is also provided with two retaining ring storage grooves X5x, X5x, and two retaining ring storage grooves X5x with the driven gear X3 disposed between the two retaining ring storage grooves X5x, X5x. , X5x is attached with retaining rings X7, X7. The side plate X6 is provided with a retaining ring storage groove X6x in which the retaining ring X7 can be accommodated in order to prevent interference with the retaining ring X7.
Japanese Patent Laid-Open No. 10-184560 Japanese Utility Model Publication No. 6-67878

ところで、従来の構成では、上述した態様における止め輪X7を収納するための止め輪収納溝X4x、X5x、X6xや、特許文献1又は特許文献2記載の構成を採用した場合のピンを挿通させるためのピン挿通孔に代表される移動規制手段取付部を支軸に別途設ける必要がある。すなわち、これらピン挿通孔ないしリング収納溝に代表される移動規制手段取付部を支軸に設ける加工工程が別途必要になる。さらに、この場合ピンを挿通させる工程又はリング収納溝に止め輪を収納させる工程等の組立工程も別途必要になる。   By the way, in the conventional configuration, for retaining the retaining ring X4x, X5x, X6x for accommodating the retaining ring X7 in the above-described aspect, or a pin when the configuration described in Patent Document 1 or Patent Document 2 is adopted. It is necessary to separately provide a movement restricting means mounting portion typified by a pin insertion hole. In other words, a separate machining step is required in which a movement restricting means mounting portion represented by these pin insertion holes or ring housing grooves is provided on the support shaft. Furthermore, in this case, an assembling process such as a process of inserting the pin or a process of storing the retaining ring in the ring storing groove is required separately.

本発明は、以上に述べた課題を解決すべく構成するものである。   The present invention is configured to solve the problems described above.

すなわち、本発明に係る歯車ポンプ又はモータは、歯車収納室を形成するボディ及びこのボディに着脱可能に装着され前記歯車収納室を閉塞可能なカバーを有するケーシングと、前記歯車収納室に収納してなる歯車と、この歯車の両側面にそれぞれ添接させてなる側板と、前記歯車と別体であり歯車を貫通した状態で該歯車を軸支する軸とを具備するものであって、前記軸に、該軸と前記歯車との間の該軸の延伸方向への相対移動を規制する鍔体を設けているとともに、前記歯車又は側板の少なくとも一方に前記鍔体を収納可能な鍔体収納凹部を設けていることを特徴とする。   That is, a gear pump or a motor according to the present invention includes a body that forms a gear housing chamber, a casing that is detachably attached to the body and that can close the gear housing chamber, and is housed in the gear housing chamber. A side plate formed on both side surfaces of the gear, and a shaft that is separate from the gear and that supports the gear in a state of passing through the gear. And a housing housing recess for housing the housing in at least one of the gear and the side plate, and a housing for restricting relative movement between the shaft and the gear in the extending direction of the shaft. It is characterized by providing.

このようなものであれば、歯車と軸との間の軸方向への相対移動の規制を行うためには鍔体及び鍔体収納凹部は一つ設ければよいので、歯車の両側に対応する位置に止め輪を設ける上述した態様と比較して加工工数を削減できる。また、鍔体は軸に一つ設ければよいので、移動規制手段を歯車と軸との間に設ける上述した態様と比較して、このような歯車ポンプ又はモータの部品点数の削減を図ることができる。さらに、このような構成であれば、組付け作業の際に鍔体が鍔体収納凹部に収納されることにより歯車、軸、及び側板の位置決めを行うことができるので、組立工数の削減も行うことができる。そして、止め輪の切り欠き部分やピン等が側板と摺接して側板が摩耗する不具合を防ぎつつ、歯車と鍔体との間、及び鍔体と側板との間のクリアランスを少なくでき、歯車収納室内での軸のがたつきを抑えることができる。   In such a case, in order to regulate the relative movement between the gear and the shaft in the axial direction, it is sufficient to provide one housing and a housing housing recess, so that it corresponds to both sides of the gear. Compared with the above-described embodiment in which the retaining ring is provided at the position, the number of processing steps can be reduced. Further, since only one housing is provided on the shaft, the number of parts of the gear pump or motor can be reduced as compared with the above-described embodiment in which the movement restricting means is provided between the gear and the shaft. Can do. Furthermore, with such a configuration, the gears, shafts, and side plates can be positioned by housing the housing in the housing housing recess during assembly work, thus reducing the number of assembly steps. be able to. Further, while preventing a problem that the side plate is worn due to the notch portion or pin of the retaining ring slidingly contacting the side plate, the clearance between the gear and the housing and between the housing and the side plate can be reduced, and the gear can be stored. Shaking of the shaft in the room can be suppressed.

本発明に係る歯車ポンプ又はモータの構成によれば、軸に鍔体を設け、この鍔体を歯車又は側板に設けた鍔体収納凹部に収納するようにしているので、歯車と軸との間の軸方向への相対移動の規制を行うためには鍔体及び鍔体収納凹部は一つ設ければよく、従って、歯車の両側に対応する位置に止め輪を設ける上述した態様と比較して加工工数を削減できる。また、鍔体を軸に一つ設ければよいので、止め輪やピン等の移動規制手段を歯車と軸との間に設ける従来の態様と比較して、このような歯車ポンプ又はモータの部品点数の削減を図ることができる。さらに、このような構成であれば、組付け作業の際に鍔体が鍔体収納凹部に収納されることにより歯車、軸、及び側板の位置決めを行うことができるので、組立工数の削減も行うことができる。そして、止め輪の切り欠き部分やピン等が側板と摺接して側板が摩耗する不具合を防ぎつつ、歯車と鍔部との間、及び鍔部と側板との間のクリアランスを少なくでき、歯車収納室内での軸のがたつきを抑えることができる。   According to the configuration of the gear pump or motor according to the present invention, the housing is provided on the shaft, and the housing is stored in the housing housing recess provided on the gear or the side plate. In order to restrict the relative movement in the axial direction, it is only necessary to provide one housing and one housing housing recess, and therefore, compared with the above-described embodiment in which retaining rings are provided at positions corresponding to both sides of the gear. Processing man-hours can be reduced. In addition, since only one housing needs to be provided on the shaft, the gear pump or motor component is compared with the conventional mode in which movement restricting means such as a retaining ring and a pin are provided between the gear and the shaft. The number of points can be reduced. Furthermore, with such a configuration, the gears, shafts, and side plates can be positioned by housing the housing in the housing housing recess during assembly work, thus reducing the number of assembly steps. be able to. Further, while preventing a problem that the side plate is worn due to the notch portion or pin of the retaining ring being in sliding contact with the side plate, the clearance between the gear and the collar portion and between the collar portion and the side plate can be reduced, and the gear can be stored. Shaking of the shaft in the room can be suppressed.

以下、本発明の一実施形態を、図面を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

本発明に係る実施形態は、図1及び図2に示すように、主として、歯車収納室111を内部に有する形成するケーシング1と、このケーシング1内に保持され互いに噛合する駆動歯車2及び従動歯車3と、前記駆動歯車2を軸支する駆動軸4と、前記従動歯車2を軸支する従動軸5と、各歯車2、3の両側面2a、3aに添接する側板6、6とを具備する外接型のものである。   As shown in FIGS. 1 and 2, the embodiment according to the present invention mainly includes a casing 1 having a gear housing chamber 111 therein, and a driving gear 2 and a driven gear that are held in the casing 1 and mesh with each other. 3, a drive shaft 4 that pivotally supports the drive gear 2, a driven shaft 5 that pivotally supports the driven gear 2, and side plates 6 and 6 that are in contact with both side surfaces 2 a and 3 a of the gears 2 and 3. Circumscribed type.

駆動歯車2及び従動歯車3は、複数の歯体を外周面に沿って所定間隔で設けた周知のものであり、本実施形態においては焼結金属により構成している。また、前記駆動歯車2には前記駆動軸4を貫通させていて、これら駆動歯車2と駆動軸4とを駆動軸4の軸心周りに一体的に回転可能にすべくスプライン結合している。一方、前記従動歯車3には前記従動軸5を貫通させていて、これら従動歯車3と従動軸5とを従動軸5の軸心周りに一体的に回転可能にすべくスプライン結合している。   The drive gear 2 and the driven gear 3 are well-known ones in which a plurality of tooth bodies are provided at predetermined intervals along the outer peripheral surface, and in the present embodiment, are constituted by sintered metal. Further, the drive gear 2 is penetrated by the drive shaft 4, and the drive gear 2 and the drive shaft 4 are spline-coupled so as to be integrally rotatable around the axis of the drive shaft 4. On the other hand, the driven gear 3 is penetrated by the driven shaft 5, and the driven gear 3 and the driven shaft 5 are spline-coupled so as to be integrally rotatable around the axis of the driven shaft 5.

ケーシング1は、例えば、ボディ11とカバーたるリアカバー12とから構成したものである。ボディ11には、駆動歯車2及び従動歯車3を噛合状態で収容する略眼鏡状の歯車収納室111と、歯車収納室111に連通し前記駆動軸4及び従動軸5がそれぞれ嵌入可能な軸受孔112、113とが形成されている。駆動歯車2を挿入すべき位置寄りの軸受孔112にはブッシュ7を嵌装し、このブッシュ7に前記駆動軸4の一端部を挿入し回転可能に軸承している。一方、従動歯車3を挿入すべき位置寄りの軸受孔113にもブッシュ7を嵌装していて、このブッシュ7に前記従動軸5の一端部を挿入し回転可能に軸承している。また、ボディ11には、前記駆動歯車2と従動歯車3との噛合部位に臨む位置に開口部たる吸込口及び吐出口(図示略)をそれぞれ開口させてある。リアカバー12は、例えばボディ11にボルト等によって着脱可能に装着されて前記ボディ穴111の開口面を閉塞するものであり、前記駆動軸4及び従動軸5がそれぞれ嵌入可能な軸受孔122、123が形成さている。駆動歯車2を挿入すべき位置寄りの軸受孔122にはブッシュ7を嵌装し、このブッシュ7に前記駆動軸4の一端部を挿入し回転可能に軸承している。一方、従動歯車3を挿入すべき位置寄りの軸受孔123にもブッシュ7を嵌装していて、このブッシュ7に前記従動軸5の一端部を挿入し回転可能に軸承している。   The casing 1 is composed of, for example, a body 11 and a rear cover 12 as a cover. The body 11 has a substantially spectacle-shaped gear storage chamber 111 that accommodates the drive gear 2 and the driven gear 3 in mesh, and a bearing hole that communicates with the gear storage chamber 111 and into which the drive shaft 4 and the driven shaft 5 can be respectively fitted. 112 and 113 are formed. A bush 7 is fitted in the bearing hole 112 near the position where the drive gear 2 is to be inserted, and one end of the drive shaft 4 is inserted into the bush 7 so as to be rotatably supported. On the other hand, the bush 7 is also fitted into the bearing hole 113 near the position where the driven gear 3 is to be inserted, and one end of the driven shaft 5 is inserted into the bush 7 so as to be rotatably supported. Further, the body 11 is provided with a suction port and a discharge port (not shown) that are openings at positions facing the meshing portion of the drive gear 2 and the driven gear 3. The rear cover 12 is detachably attached to the body 11 with bolts or the like, for example, and closes the opening surface of the body hole 111, and has bearing holes 122 and 123 into which the drive shaft 4 and the driven shaft 5 can be respectively inserted. Is formed. A bush 7 is fitted into the bearing hole 122 near the position where the drive gear 2 is to be inserted, and one end of the drive shaft 4 is inserted into the bush 7 so as to be rotatably supported. On the other hand, a bush 7 is fitted into the bearing hole 123 near the position where the driven gear 3 is to be inserted, and one end of the driven shaft 5 is inserted into the bush 7 so as to be rotatably supported.

側板6は、前記駆動歯車2及び従動歯車3の両側面2a、3aに添接させるべく2箇所に配され、駆動歯車2及び従動歯車3の各側面2a、3aをそれぞれシールするためのものであり、全体の輪郭は互いに噛み合う歯車2、3を軸に垂直な面に投影した形状に略一致し、中央に前記駆動軸4及び従動軸5が嵌合可能な2つの軸穴61、62を打ち抜いている。また、図示はしないが、この側板6に、前記ボディ11に形成した吸込口から吸入した例えば作動油等の液体を高圧領域に閉じ込み得る閉じ込み部を設けており、この閉じ込み部の位置を、側板6を前記駆動歯車2及び従動歯車3の両側面2a、3aに添接した状態において、前記駆動歯車2及び従動歯車3の軸中心を結ぶ仮想直線から前記吸込口側へ偏位した位置に設定している。   The side plates 6 are arranged at two locations so as to be brought into contact with both side surfaces 2a and 3a of the drive gear 2 and the driven gear 3, and seal the side surfaces 2a and 3a of the drive gear 2 and the driven gear 3, respectively. The entire contour substantially coincides with the shape of the gears 2 and 3 meshing with each other and projected onto a plane perpendicular to the axis, and two shaft holes 61 and 62 into which the drive shaft 4 and the driven shaft 5 can be fitted are formed in the center. Punched out. Although not shown, the side plate 6 is provided with a closing portion capable of closing a liquid such as hydraulic oil sucked from a suction port formed in the body 11 in a high pressure region, and the position of the closing portion. In a state where the side plate 6 is in contact with both side surfaces 2a and 3a of the drive gear 2 and the driven gear 3, the side plate 6 is displaced from the imaginary straight line connecting the axis centers of the drive gear 2 and the driven gear 3 to the suction port side. The position is set.

上記各部材を備える歯車ポンプは、一端を外部に延出させてなる前記駆動軸4を介して前記駆動歯車2及び従動歯車3を同期逆回転駆動した場合に、吸込口と吐出口との間で高低圧差が生じ、図2に示すように前記駆動歯車2及び従動歯車3の歯体(図示略)同士が漸次離反する側のボディ11内空間、つまり前記吸込口側が低圧領域になるとともに、歯体同士が漸次噛合する側のボディ11内空間、つまり吐出口側が高圧領域になる。   The gear pump provided with each of the above members is provided between the suction port and the discharge port when the drive gear 2 and the driven gear 3 are driven synchronously and reversely via the drive shaft 4 having one end extended to the outside. As shown in FIG. 2, the internal space of the body 11 on the side where the tooth bodies (not shown) of the drive gear 2 and the driven gear 3 gradually separate from each other, that is, the suction port side becomes a low pressure region, as shown in FIG. The space in the body 11 on the side where the tooth bodies gradually mesh with each other, that is, the discharge port side becomes a high pressure region.

そして、吸込口より導入した作動液を、前記駆動歯車2及び従動歯車3の歯先とケーシング1の内周との間に閉成される容積空間に閉じ込めて吐出口にまで導き吐出するポンプ作用を営むようにしている。なお、この歯車ポンプは、吐出口より高圧の作動油を導入し、これにより前記駆動軸4から回転トルクを取り出して外部負荷を駆動するとともに、低圧となった作動油を前記吸込口から吐出するというモータ作用を営む歯車モータとして機能させることができるものであることはいうまでもない。   Then, the pumping action is such that the hydraulic fluid introduced from the suction port is confined in a volume space closed between the tooth tips of the drive gear 2 and the driven gear 3 and the inner periphery of the casing 1 and led to the discharge port to be discharged. To run. The gear pump introduces high-pressure hydraulic fluid from the discharge port, thereby taking out rotational torque from the drive shaft 4 to drive an external load and discharging low-pressure hydraulic fluid from the suction port. Needless to say, the motor can function as a gear motor having a motor action.

しかして本実施形態では、前記図2、及び図3に示すように、前記駆動歯車2と駆動軸4との間の軸方向への相対移動を規制すべく、前記駆動軸4に鍔体41を設けているとともに、前記駆動歯車2に前記鍔体41を収納可能な鍔体収納凹部2xを設けている。また、前記従動歯車3の軸方向への移動を規制すべく、前記従動軸5に鍔体51を設けているとともに、前記従動歯車3に前記鍔体51を収納可能な鍔体収納凹部3xを設けている。そして、本実施形態では、前記駆動歯車2とリアカバー12側の側板6との間に駆動軸4の鍔体41、また、前記従動歯車3とリアカバー12側の側板6との間に従動軸5の鍔体51をそれぞれ配するようにしている。   Therefore, in this embodiment, as shown in FIGS. 2 and 3, the housing 41 is attached to the drive shaft 4 in order to restrict relative movement in the axial direction between the drive gear 2 and the drive shaft 4. And a housing housing recess 2x capable of housing the housing 41 in the drive gear 2. Further, in order to restrict the movement of the driven gear 3 in the axial direction, a casing 51 is provided on the driven shaft 5, and a casing housing recess 3 x capable of storing the casing 51 in the driven gear 3 is provided. Provided. In this embodiment, the housing 41 of the drive shaft 4 is provided between the drive gear 2 and the side plate 6 on the rear cover 12 side, and the driven shaft 5 is provided between the driven gear 3 and the side plate 6 on the rear cover 12 side. The housings 51 are arranged respectively.

このような歯車ポンプの組付けの手順について述べる。まず、前記ボディ11のボディ穴111内に側板6を配置し、次いで駆動歯車2及び従動歯車3を配置する。次いで、これら駆動歯車2及び従動歯車3の支持孔に駆動軸4及び従動軸5をそれぞれ挿通させる。そして、鍔部41、51を駆動歯車2及び従動歯車3の鍔部収納凹部2x、3xと係合させ、側板6をさらに配置した後、リアカバー2を取り付ける。この状態において、駆動軸4の鍔部41は駆動歯車2及び側板6に当接ないし近接しているので、該駆動軸4の延伸方向への移動が規制される。そして、従動軸5の鍔部51は従動歯車3及び側板6に当接ないし近接しているので、該従動軸5の延伸方向への移動も規制される。   The procedure for assembling such a gear pump will be described. First, the side plate 6 is disposed in the body hole 111 of the body 11, and then the driving gear 2 and the driven gear 3 are disposed. Next, the drive shaft 4 and the driven shaft 5 are inserted through the support holes of the drive gear 2 and the driven gear 3, respectively. Then, after the flange portions 41 and 51 are engaged with the flange housing recesses 2x and 3x of the drive gear 2 and the driven gear 3 and the side plate 6 is further disposed, the rear cover 2 is attached. In this state, the flange portion 41 of the drive shaft 4 is in contact with or close to the drive gear 2 and the side plate 6, so that the movement of the drive shaft 4 in the extending direction is restricted. Since the flange portion 51 of the driven shaft 5 is in contact with or close to the driven gear 3 and the side plate 6, the movement of the driven shaft 5 in the extending direction is also restricted.

以上に述べたように、本実施形態に係る歯車ポンプの構成によれば、前記駆動歯車2と駆動軸4とを、また、前記従動歯車3と従動軸5とを、それぞれ別体に設けて製造コストの削減を図ることができる。その上で、駆動歯車2と駆動軸4との間の軸方向への相対移動の規制を行うためには、鍔体41及び鍔体収納凹部2xは一つずつ設ければよいので、歯車の両側に対応する位置に止め輪を設ける態様と比較して加工工数を削減できる。従動側についても同様に、従動歯車3と従動軸5との間の軸方向への相対移動の規制を行うためには、鍔体51及び鍔体収納凹部3xは一つずつ設ければよいので、同様に加工工数を削減できる。また、鍔体41、51は駆動軸2及び従動軸3にそれぞれ一つ設ければよいので、移動規制手段を歯車と軸との間に設ける上述した態様と比較して、このような歯車ポンプ又はモータの部品点数の削減を図ることができる。さらに、このような構成であれば、組付け作業の際に鍔体41、51が鍔体収納凹部2x、3xに収納されることにより駆動歯車2、駆動軸4、従動歯車3、従動軸5、及び側板6、6の位置決めを行うことができるので、組立工数の削減も行うことができる。そして、止め輪の切り欠き部分やピン等が側板と摺接して側板が摩耗する不具合を防ぎつつ、駆動歯車2又は従動歯車3と鍔体41、51との間、及び鍔体41、51と側板6との間のクリアランスを少なくでき、駆動軸4及び従動軸5のがたつきを抑えることができる。   As described above, according to the configuration of the gear pump according to the present embodiment, the drive gear 2 and the drive shaft 4 are provided separately, and the driven gear 3 and the driven shaft 5 are provided separately. The manufacturing cost can be reduced. In addition, in order to restrict the relative movement in the axial direction between the drive gear 2 and the drive shaft 4, the housing 41 and the housing housing recess 2x may be provided one by one. Compared with an aspect in which retaining rings are provided at positions corresponding to both sides, the number of processing steps can be reduced. Similarly, on the driven side, in order to restrict the relative movement between the driven gear 3 and the driven shaft 5 in the axial direction, the casing 51 and the casing housing recess 3x may be provided one by one. Similarly, the number of processing steps can be reduced. Further, since only one housing 41, 51 is provided for each of the drive shaft 2 and the driven shaft 3, such a gear pump as compared with the above-described embodiment in which the movement restricting means is provided between the gear and the shaft. Alternatively, the number of motor parts can be reduced. Furthermore, with such a configuration, the housing 41 and 51 are housed in the housing housing recesses 2x and 3x during the assembly work, so that the drive gear 2, the drive shaft 4, the driven gear 3, and the driven shaft 5 are accommodated. Since the side plates 6 and 6 can be positioned, the number of assembling steps can be reduced. And while preventing the malfunction which the notch part of a retaining ring, a pin, etc. slidably contact with a side plate and a side plate wears, between drive gear 2 or driven gear 3 and housings 41 and 51, and housings 41 and 51, The clearance with the side plate 6 can be reduced, and rattling of the drive shaft 4 and the driven shaft 5 can be suppressed.

なお、各部の具体的な構成は、以上に述べたような実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形が可能である。   The specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

例えば、上述した実施形態に係る歯車ポンプは外接型歯車ポンプであるが、内接型歯車ポンプに本発明の構成を適用してもよい。すなわち、内接型歯車ポンプの歯車対を構成する2つの歯車のうち、駆動軸に接続される該歯車を軸支する支軸と別体に構成し、この支軸に鍔体を設けるようにしてもよい。   For example, the gear pump according to the above-described embodiment is a circumscribed gear pump, but the configuration of the present invention may be applied to an inscribed gear pump. That is, of the two gears constituting the gear pair of the internal gear pump, the gear connected to the drive shaft is configured separately from the support shaft that supports the gear, and the housing is provided on the support shaft. May be.

また、多連歯車ポンプにおいて、1つの鍔体を有する軸要素をスプライン結合等により結合して1つの駆動軸又は従動軸として形成するとともに、各軸要素の鍔体ごとに歯車をそれぞれ当接可能にしてもよい。   Also, in a multiple gear pump, shaft elements having one housing are joined by spline coupling or the like to form one drive shaft or driven shaft, and gears can be brought into contact with each housing of each shaft element. It may be.

加えて、上述した実施形態では歯車側に鍔部収納凹部を設けているが、側板側に鍔部収納凹部を設けるようにしてもよい。   In addition, in the above-described embodiment, the collar housing recess is provided on the gear side, but the collar housing recess may be provided on the side plate side.

さらに、上述した実施形態では、ケーシングが、後方に開口した歯車収納室を形成するボディと歯車収納室を閉塞可能なリアカバーとを具備する構成にしているが、ケーシングが、前方及び後方に開口した歯車収納室を形成するボディと、このボディの前方に配され歯車収納室を閉塞可能なフロントカバーと、このボディの後方に配され歯車収納室を閉塞可能なリアカバーとを具備する構成を採用してもよい。   Furthermore, in the above-described embodiment, the casing includes a body that forms a gear storage chamber that opens rearward and a rear cover that can close the gear storage chamber. However, the casing opens frontward and rearward. Adopting a structure comprising a body forming a gear storage chamber, a front cover arranged in front of the body and capable of closing the gear storage chamber, and a rear cover arranged behind the body and capable of closing the gear storage chamber May be.

そして、上述した実施形態では駆動歯車と駆動軸とを別体に構成しているとともに、従動歯車と従動軸とを別体に構成しているが、これらのいずれか一方は一体に構成してもよい。すなわち、駆動歯車と駆動軸とを別体に構成しつつ従動歯車と従動軸とを一体に構成してもよく、逆に、駆動歯車と駆動軸とを一体に構成しつつ従動歯車と従動軸とを別体に構成してもよい。   In the above-described embodiment, the drive gear and the drive shaft are configured separately, and the driven gear and the driven shaft are configured separately, but either one of these is configured integrally. Also good. In other words, the driven gear and the driven shaft may be integrally configured while the drive gear and the drive shaft are configured separately, and conversely, the driven gear and the driven shaft are configured integrally with the drive gear and the drive shaft. And may be configured separately.

また歯車と支軸を別体に構成する場合、歯車の形成方法は焼結金属などが考えられるが、歯車として所定の強度を有する方案であればその他の方法でも本発明は適用可能である。   Further, when the gear and the support shaft are configured separately, a method of forming the gear may be sintered metal or the like, but the present invention can be applied to other methods as long as the gear has a predetermined strength.

その他、本発明の趣旨を損ねない範囲で種々に変形してよい。   In addition, various modifications may be made without departing from the spirit of the present invention.

本発明の一実施形態に係る歯車ポンプの正面図。The front view of the gear pump concerning one embodiment of the present invention. 同実施形態に係る歯車ポンプの中央縦断面図。The center longitudinal cross-sectional view of the gear pump which concerns on the embodiment. 図2の要部を拡大して示す図。The figure which expands and shows the principal part of FIG. 従来の歯車ポンプの中央縦断面図。The center longitudinal cross-sectional view of the conventional gear pump. 図4の要部を拡大して示す図。The figure which expands and shows the principal part of FIG.

符号の説明Explanation of symbols

1…ケーシング
11…ボディ
12…リアカバー(カバー)
2…駆動歯車
3…従動歯車
2x、3x…鍔体収納凹部
4…駆動軸
5…従動軸
41、51…鍔体
6…側板
DESCRIPTION OF SYMBOLS 1 ... Casing 11 ... Body 12 ... Rear cover (cover)
DESCRIPTION OF SYMBOLS 2 ... Drive gear 3 ... Driven gear 2x, 3x ... Housing accommodating recessed part 4 ... Drive shaft 5 ... Driven shaft 41, 51 ... Housing 6 ... Side plate

Claims (1)

歯車収納室を形成するボディ及びこのボディに着脱可能に装着され前記歯車収納室を閉塞可能なカバーを有するケーシングと、前記歯車収納室に収納してなる歯車と、この歯車の両側面にそれぞれ添接させてなる側板と、前記歯車と別体であり歯車を貫通した状態で該歯車を軸支する軸とを具備するものであって、前記軸に、該軸と前記歯車との間の該軸の延伸方向への相対移動を規制する鍔体を設けているとともに、前記歯車又は側板の少なくとも一方に前記鍔体を収納可能な鍔体収納凹部を設けていることを特徴とする歯車ポンプ又はモータ。 A body that forms a gear housing chamber, a casing that is detachably attached to the body and has a cover that can close the gear housing chamber, a gear that is housed in the gear housing chamber, and both side surfaces of the gear. A side plate that is in contact with the shaft, and a shaft that is separate from the gear and that supports the gear in a state of passing through the gear, and the shaft includes the shaft between the shaft and the gear. A gear pump comprising a housing for restricting relative movement of the shaft in the extending direction and a housing housing recess capable of housing the housing in at least one of the gear or the side plate. motor.
JP2007166857A 2007-06-25 2007-06-25 Gear pump or motor Withdrawn JP2009002316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007166857A JP2009002316A (en) 2007-06-25 2007-06-25 Gear pump or motor

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Application Number Priority Date Filing Date Title
JP2007166857A JP2009002316A (en) 2007-06-25 2007-06-25 Gear pump or motor

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Publication Number Publication Date
JP2009002316A true JP2009002316A (en) 2009-01-08

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Application Number Title Priority Date Filing Date
JP2007166857A Withdrawn JP2009002316A (en) 2007-06-25 2007-06-25 Gear pump or motor

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Country Link
JP (1) JP2009002316A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629110A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Dual-gear oil pump compensating axial clearance by side plates
CN103629109A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Side plate axial clearance compensation gear oil pump
CN108488603A (en) * 2018-03-16 2018-09-04 重庆永发工业有限公司 A kind of motorcycle engine oil pump assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629110A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Dual-gear oil pump compensating axial clearance by side plates
CN103629109A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Side plate axial clearance compensation gear oil pump
CN108488603A (en) * 2018-03-16 2018-09-04 重庆永发工业有限公司 A kind of motorcycle engine oil pump assembly

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