JP6423178B2 - Solenoid valve and manufacturing method thereof - Google Patents

Solenoid valve and manufacturing method thereof Download PDF

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JP6423178B2
JP6423178B2 JP2014120488A JP2014120488A JP6423178B2 JP 6423178 B2 JP6423178 B2 JP 6423178B2 JP 2014120488 A JP2014120488 A JP 2014120488A JP 2014120488 A JP2014120488 A JP 2014120488A JP 6423178 B2 JP6423178 B2 JP 6423178B2
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valve
solenoid
valve body
hole
solenoid valve
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JP2016001015A (en
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晃士 河西
晃士 河西
俊哉 中村
俊哉 中村
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Keihin Corp
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Description

本発明は、自動車の油圧システムに用いられるソレノイドバルブ及びその製造方法に関する。   The present invention relates to a solenoid valve used in a hydraulic system of an automobile and a manufacturing method thereof.

自動車は、油圧機器への作動油や潤滑油の供給制御を行うために、油圧の流通路の所定位置にソレノイドバルブを備える。ソレノイドバルブは、バルブ本体及びソレノイド部を有し、バルブ本体内に配置されたスプール弁をソレノイド部の通電作用により変位させる構成となっている(特許文献1参照)。スプール弁が変位して調節栓によりバルブ本体内の所定位置に配置されると、油圧の流通路とバルブ本体(弁孔)内が連通して油圧が流通可能となる。   An automobile is provided with a solenoid valve at a predetermined position of a hydraulic flow path in order to control supply of hydraulic oil and lubricating oil to hydraulic equipment. The solenoid valve has a valve body and a solenoid portion, and is configured to displace a spool valve disposed in the valve body by an energizing action of the solenoid portion (see Patent Document 1). When the spool valve is displaced and is arranged at a predetermined position in the valve main body by the adjustment plug, the hydraulic flow passage and the valve main body (valve hole) communicate with each other to allow the hydraulic pressure to flow.

特許第3488862号公報Japanese Patent No. 3488862

ところで、ソレノイドバルブの製造では、バルブ本体の一端にソレノイド部を取り付け、この状態でバルブ本体の他端側(ソレノイド部と反対側)から調節栓を挿入固定する作業が営まれる。   By the way, in the manufacture of the solenoid valve, a solenoid part is attached to one end of the valve body, and in this state, an operation of inserting and fixing the adjustment plug from the other end side (the side opposite to the solenoid part) of the valve body is performed.

しかしながら、バルブ本体の側周面には、バルブ本体内に油圧を流通させるための流路部が設けられており、バルブ本体は、調節栓を挿入固定する際の組立応力により流路部周辺の側壁に応力集中が生じることで、その形状が変形してしまうおそれがある。このため、ソレノイドバルブは、応力集中で変形しないように、バルブ本体の肉厚を厚くする等の設計が要求される。この場合、肉厚が増加した分だけバルブ本体が大型化や重量化するという別の不都合が生じる。   However, the side peripheral surface of the valve body is provided with a flow path portion for circulating hydraulic pressure in the valve body, and the valve main body is surrounded by the assembly stress when the adjustment plug is inserted and fixed. If stress concentration occurs on the side wall, the shape may be deformed. For this reason, the solenoid valve is required to be designed to increase the thickness of the valve body so as not to be deformed by stress concentration. In this case, there arises another inconvenience that the valve body is increased in size and weight by the increase in thickness.

本発明は、上記の実情に鑑みてなされたものであって、調節栓を組み付ける際のバルブ本体の変形を抑止して製品の高品質化を図ることができ、且つ装置の小型化及び軽量化を一層促進し得るソレノイドバルブ及びその製造方法を提供することを目的とする。   The present invention has been made in view of the above circumstances, and can suppress the deformation of the valve body when assembling the adjustment plug, thereby improving the quality of the product, and reducing the size and weight of the device. An object of the present invention is to provide a solenoid valve and a method for manufacturing the solenoid valve.

前記の目的を達成するために、本発明は、電磁推力を付与してスプール弁を軸方向に押圧するソレノイド部と、前記ソレノイド部が一端に取り付けられると共に、前記スプール弁を摺動可能に収容する弁孔と、電磁推力作用下の前記スプール弁と前記弁孔との位置関係を調節する調節栓と、前記ソレノイド部とは反対側の他端部内で前記弁孔に連なり前記調節栓を収容固定する取付孔と、前記弁孔と外部とを連通する複数の流路部とを有するバルブ本体と、を含むソレノイドバルブであって、前記取付孔の径方向外側に位置する前記バルブ本体の外周面には、前記バルブ本体を軸方向に保持するための保持部が設けられることを特徴とする。   In order to achieve the above object, the present invention provides a solenoid part that applies an electromagnetic thrust to press the spool valve in the axial direction, the solenoid part is attached to one end, and the spool valve is slidably accommodated. A regulating hole for adjusting the positional relationship between the spool valve and the valve hole under the action of electromagnetic thrust, and the regulating hole connected to the valve hole in the other end opposite to the solenoid part. A solenoid valve including a mounting hole to be fixed and a valve body having a plurality of flow passage portions communicating with the valve hole and the outside, and an outer periphery of the valve body located radially outside the mounting hole The surface is provided with a holding portion for holding the valve body in the axial direction.

上記によれば、ソレノイドバルブは、製造時に、調節栓が固定される取付孔の外側位置で、保持部を介してバルブ本体を保持することで、バルブ本体の変形を抑止することができる。すなわち、調節栓を取付孔に固定する際に、取付孔近くの保持部により調節栓の組立応力を受けるので、取付孔よりも基端側のバルブ本体に組立応力が伝わることを防いで、流路部付近に歪みが生じることがなくなる。従って、バルブ本体に対しスプール弁や調節栓を高精度に嵌め合わせることが可能となり、製品の高品質化が図られる。また、スプール弁を高精度に収容配置することで、ソレノイド部の電磁推力を小さくすることが可能となり、ソレノイド部の小型化も図られる。さらに、バルブ本体の強度を下げて、薄肉化(小型化)及び軽量化を一層促進することができる。   According to the above, the solenoid valve can suppress the deformation of the valve body by holding the valve body via the holding part at a position outside the mounting hole to which the adjustment plug is fixed at the time of manufacture. In other words, when the adjustment plug is fixed to the mounting hole, the holding portion near the mounting hole receives the assembly stress of the adjustment plug, so that the assembly stress is prevented from being transmitted to the valve body on the proximal side of the mounting hole. Distortion does not occur near the road. Accordingly, it becomes possible to fit the spool valve and the adjustment plug to the valve body with high accuracy, and the quality of the product can be improved. In addition, since the spool valve is accommodated and arranged with high accuracy, the electromagnetic thrust of the solenoid portion can be reduced, and the solenoid portion can be reduced in size. Furthermore, the strength of the valve body can be reduced to further promote thinning (downsizing) and weight reduction.

この場合、前記保持部は、前記バルブ本体の軸方向と直交する方向に沿って形成された一対の溝部であることが好ましい。   In this case, the holding portion is preferably a pair of grooves formed along a direction orthogonal to the axial direction of the valve body.

このように、保持部を一対の溝部で構成することで、溝部に嵌め合わせる固定部材をバルブ本体に向けて落とし込むだけで、バルブ本体を固定することができ、ソレノイドバルブの製造を容易化することができる。   Thus, by configuring the holding portion with a pair of groove portions, the valve body can be fixed simply by dropping the fixing member that fits into the groove portion toward the valve body, facilitating the manufacture of the solenoid valve. Can do.

また、前記の目的を達成するために、本発明は、電磁推力を付与してスプール弁を軸方向に押圧するソレノイド部と、前記ソレノイド部が一端に取り付けられると共に、前記スプール弁を摺動可能に収容する弁孔と、電磁推力作用下の前記スプール弁と前記弁孔との位置関係を調節する調節栓と、前記ソレノイド部とは反対側の他端部内で前記弁孔に連なり前記調節栓を収容固定する取付孔と、前記弁孔と外部とを連通する複数の流路部とを有するバルブ本体と、を含むソレノイドバルブの製造方法であって、前記取付孔の径方向外側に位置する前記バルブ本体の外周面には、前記バルブ本体を軸方向に保持するための保持部が設けられるものであり、組立装置の治具部によりバルブ本体の外周面を外嵌し、且つ前記治具部に前記バルブ本体の軸方向と異なる方向から固定部材を差し込んで該固定部材により前記保持部を保持するソレノイドバルブ固定工程と、前記ソレノイドバルブに圧力流体を流通すると共に前記ソレノイド部に所定の通電を行って前記スプール弁を作動させる準備工程と、前記圧力流体の圧力を測定しながら前記調節栓を前記取付孔内に進入させていき、前記圧力流体の圧力が予め規定された圧に至ったときに前記調節栓の進入を終了する調節栓調整工程と、を有することを特徴とする。   In order to achieve the above-mentioned object, the present invention provides a solenoid part that applies electromagnetic thrust to press the spool valve in the axial direction, the solenoid part is attached to one end, and the spool valve is slidable. A control hole for adjusting the positional relationship between the spool valve and the valve hole under the action of electromagnetic thrust, and the adjustment plug connected to the valve hole in the other end opposite to the solenoid part. And a valve main body having a plurality of flow passage portions communicating with the valve hole and the outside, the solenoid valve manufacturing method being located radially outside the mounting hole A holding portion for holding the valve main body in the axial direction is provided on the outer peripheral surface of the valve main body, the outer peripheral surface of the valve main body is externally fitted by a jig portion of an assembly apparatus, and the jig The valve body A solenoid valve fixing step in which a fixing member is inserted from a direction different from the axial direction and the holding portion is held by the fixing member; a pressure fluid is circulated through the solenoid valve; The adjusting plug is inserted into the mounting hole while measuring the pressure fluid pressure, and when the pressure fluid pressure reaches a predetermined pressure, And an adjusting plug adjusting step for ending the entry.

上記によれば、ソレノイドバルブの製造時に、ソレノイドバルブ固定工程の実施により、調節栓が固定される取付孔の外側位置で、保持部を介してバルブ本体を保持することで、バルブ本体の変形を抑止することができる。また、バルブ本体は、固定部材を治具部に差し込むだけで固定され、固定部材自体も治具部に内挿することで補剛される。よって、調節栓の取付時に固定部材が変形し、ソレノイドバルブがずれて変形してしまう不都合を防ぐことができる。これにより、ソレノイドバルブは、高品質化が図られると共に、ソレノイド部の小型化、バルブ本体の薄肉化(小型化)及び軽量化を一層促進することができる。   According to the above, when the solenoid valve is manufactured, the valve body is deformed by holding the valve body via the holding portion at the position outside the mounting hole where the adjustment plug is fixed by performing the solenoid valve fixing step. Can be deterred. Further, the valve body is fixed simply by inserting the fixing member into the jig portion, and the fixing member itself is stiffened by being inserted into the jig portion. Therefore, it is possible to prevent the inconvenience that the fixing member is deformed when the adjustment plug is attached and the solenoid valve is displaced and deformed. As a result, the quality of the solenoid valve can be improved, and it is possible to further promote downsizing of the solenoid part, thinning (downsizing) and lightening of the valve body.

また、前記治具部には、前記バルブ本体の流路部に対応する複数の試験圧力流体路が設けられるとよい。   The jig portion may be provided with a plurality of test pressure fluid passages corresponding to the flow passage portion of the valve body.

このように、治具部に試験圧力流体路が設けられることで、バルブ本体を治具部に嵌めるだけで流通路を試験圧力流体路に連通させることができる。治具部は、調節栓調整工程の実施時に、試験圧力流体路を介してバルブ本体への圧力流体の供給を良好に行うことができる。   Thus, by providing the test pressure fluid path in the jig portion, the flow passage can be communicated with the test pressure fluid path simply by fitting the valve body to the jig portion. The jig portion can satisfactorily supply the pressure fluid to the valve main body via the test pressure fluid path when the adjustment plug adjustment process is performed.

本発明によれば、ソレノイドバルブは、調節栓を組み付ける際のバルブ本体の変形を抑止して製品の高品質化を図ることができ、且つ装置の小型化及び軽量化を一層促進することができる。   According to the present invention, the solenoid valve can suppress the deformation of the valve body when assembling the adjusting plug, can improve the quality of the product, and can further promote the downsizing and weight reduction of the device. .

図1Aは、本発明の一実施形態に係るソレノイドバルブの全体構成を下方向から示す平面図であり、図1Bは、図1Aのソレノイドバルブを示す部分側面断面図である。FIG. 1A is a plan view showing the entire configuration of a solenoid valve according to an embodiment of the present invention from below, and FIG. 1B is a partial side sectional view showing the solenoid valve of FIG. 1A. 図1Aのソレノイドバルブを組立装置に取り付けた状態を示す斜視図である。It is a perspective view which shows the state which attached the solenoid valve of FIG. 1A to the assembly apparatus. 図3Aは、ソレノイドバルブと組立装置の取付状態を示す部分側面断面図であり、図3Bは、図3Aのソレノイドバルブの調節栓の挿入状態を示す拡大断面図である。3A is a partial side cross-sectional view showing a mounting state of the solenoid valve and the assembling apparatus, and FIG. 3B is an enlarged cross-sectional view showing an insertion state of the adjustment plug of the solenoid valve of FIG. 3A. 図4Aは、固定部材によるソレノイドバルブの固定状態を示す平面断面図であり、図4Bは、図4AのIVB−IVB線断面図である。4A is a plan sectional view showing a state in which the solenoid valve is fixed by a fixing member, and FIG. 4B is a sectional view taken along line IVB-IVB in FIG. 4A.

以下、本発明に係るソレノイドバルブについて、ソレノイドバルブの製造方法との関係で好適な実施形態を挙げ、添付の図面を参照して詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, a solenoid valve according to the present invention will be described in detail with reference to the accompanying drawings by giving preferred embodiments in relation to a method for manufacturing a solenoid valve.

本発明の一実施形態に係るソレノイドバルブ10は、圧力流体である油圧(作動油等)の供給又は供給停止を制御するために用いられる。このソレノイドバルブ10は、自動車の油圧システム(例えば、エンジンの吸排気弁の開閉タイミングを可変とする可変バルブ機構)に設けられる。作動油は、自動車の油圧源Aに貯留され、ソレノイドバルブ10を含む流通路Bを流動して油圧作動部Cに供給される。この際、ソレノイドバルブ10は、電力供給に比例した励磁作用を行うことで、作動油の流通を適宜制御する。   The solenoid valve 10 according to an embodiment of the present invention is used to control supply or stop of supply of hydraulic pressure (such as hydraulic fluid) that is a pressure fluid. The solenoid valve 10 is provided in a hydraulic system of an automobile (for example, a variable valve mechanism that makes the opening / closing timing of an intake / exhaust valve of an engine variable). The hydraulic oil is stored in the hydraulic pressure source A of the automobile, flows through the flow passage B including the solenoid valve 10, and is supplied to the hydraulic pressure operating unit C. At this time, the solenoid valve 10 appropriately controls the flow of the hydraulic oil by performing an excitation action proportional to the power supply.

ソレノイドバルブ10は、図1A及び図1Bに示すように、バルブ本体12と、ソレノイド部14とを有する。なお、以下の説明では、図1A及び図1Bに記載の矢印方向に基づき、図中左側をソレノイドバルブ10の先端側と言い、図中右側をソレノイドバルブ10の基端側と言う。また、ソレノイドバルブ10を下方向から平面視した図1A中の上下方向を幅方向と言い、ソレノイドバルブ10を側面断面視した図1B中の上下方向を高さ方向と言う。これらの方向指示は、説明の便宜上のものであり、ソレノイドバルブ10を任意の向きで使用してもよいことは勿論である。   As shown in FIGS. 1A and 1B, the solenoid valve 10 includes a valve body 12 and a solenoid portion 14. In the following description, the left side in the drawing is referred to as the distal end side of the solenoid valve 10 and the right side in the drawing is referred to as the proximal end side of the solenoid valve 10 based on the arrow directions shown in FIGS. 1A and 1B. Moreover, the up-down direction in FIG. 1A which planarly viewed the solenoid valve 10 from below is referred to as a width direction, and the up-down direction in FIG. These direction indications are for convenience of explanation, and it is a matter of course that the solenoid valve 10 may be used in an arbitrary direction.

ソレノイドバルブ10のバルブ本体12は、自動車の油圧システムにおいて油圧の流通路Bの一部を構成し、油圧の流通を制御する機械的機構部である。このバルブ本体12は、基端及び先端にわたって所定の軸方向長さを有する円筒状の筐体として構成されている。バルブ本体12の基端側には、略一定の外径を呈する胴体部12aに対し径方向外側に突出したフランジ部12bが一体成形されている。このフランジ部12bには、かしめや圧入等の所定の取付手段によりソレノイド部14が取り付けられる。   The valve body 12 of the solenoid valve 10 is a mechanical mechanism part that constitutes a part of the hydraulic flow passage B in the hydraulic system of the automobile and controls the flow of hydraulic pressure. The valve body 12 is configured as a cylindrical casing having a predetermined axial length over the base end and the tip end. On the proximal end side of the valve main body 12, a flange portion 12b that protrudes radially outward with respect to the body portion 12a having a substantially constant outer diameter is integrally formed. The solenoid portion 14 is attached to the flange portion 12b by predetermined attachment means such as caulking or press fitting.

ソレノイドバルブ10のソレノイド部14は、バルブ本体12よりも大径な円筒状の筐体14aを有し、この筐体14a内にバルブ本体12内に電磁推力を付与する電気的機構部を備える。このソレノイド部14は、周知の構成を採用することが可能である。例えば、ソレノイド部14は、軸心に配置される可動軸16(アーマチャ)と、電力供給に基づき可動軸16に電磁推力をかけるコイル部18と、コイル部18に電力を供給(通電)するカプラ20とを含む。ソレノイド部14は、カプラ20の電力供給量に比例して、コイル部18を励磁して、可動軸16を先端方向に進出移動させる。   The solenoid portion 14 of the solenoid valve 10 has a cylindrical casing 14a having a diameter larger than that of the valve main body 12, and an electric mechanism section that applies electromagnetic thrust to the valve main body 12 in the casing 14a. The solenoid unit 14 can employ a known configuration. For example, the solenoid unit 14 includes a movable shaft 16 (armature) disposed at the shaft center, a coil unit 18 that applies electromagnetic thrust to the movable shaft 16 based on power supply, and a coupler that supplies (energizes) power to the coil unit 18. 20 and so on. The solenoid unit 14 excites the coil unit 18 in proportion to the power supply amount of the coupler 20 to move the movable shaft 16 forward in the distal direction.

バルブ本体12は、上記ソレノイド部14の駆動状態に基づき流通路Bを開放及至遮断する。バルブ本体12は、種々の構成を内部に収容するため、軸心部を貫通形成した貫通孔22を有する。この貫通孔22は、バルブ本体12の基端面から胴体部12aの先端寄り途中部位にわたって形成された弁孔24と、弁孔24の先端側に連なりバルブ本体12の先端開口26aまで形成された取付孔26とを含む。貫通孔22内には、基端側から先端側に向かって順に、スプール弁30、弁バネ32、調節栓34が収容される。   The valve body 12 opens and closes the flow path B based on the driving state of the solenoid unit 14. The valve body 12 has a through-hole 22 formed so as to penetrate the shaft center portion in order to accommodate various configurations therein. The through-hole 22 is formed from the base end surface of the valve body 12 to the valve hole 24 formed in the middle of the body portion 12a, and to the tip opening 26a of the valve body 12 connected to the distal end side of the valve hole 24. Hole 26. In the through hole 22, a spool valve 30, a valve spring 32, and an adjustment plug 34 are accommodated in order from the proximal end side to the distal end side.

スプール弁30は、ソレノイドバルブ10の可動部材であり、軸心方向に沿って所定長さを有する円柱体として構成されている。スプール弁30の基端は、ソレノイド部14の可動軸16に接触して、可動軸16の電磁推力を受ける平坦状の受面30aとなっている。スプール弁30の先端には、弁バネ32の基端部を収容するスプール弁側収容凹部36が設けられている。   The spool valve 30 is a movable member of the solenoid valve 10 and is configured as a cylindrical body having a predetermined length along the axial direction. The base end of the spool valve 30 is a flat receiving surface 30 a that contacts the movable shaft 16 of the solenoid portion 14 and receives the electromagnetic thrust of the movable shaft 16. At the tip of the spool valve 30, a spool valve side accommodation recess 36 for accommodating the base end portion of the valve spring 32 is provided.

また、スプール弁30の側壁には、周方向に沿って径方向内側に陥没する第1環状溝38及び第2環状溝40が設けられている。第1環状溝38は、スプール弁30の中間部よりも若干基端寄りに形成され、軸方向に広い溝幅を有する。第2環状溝40は、スプール弁30の第1環状溝38よりも先端寄りに形成され、第1環状溝38よりも狭い溝幅を有する。第1環状溝38と第2環状溝40は、スプール弁30の内部に斜めに形成された連通路42を介して連通している。   Further, a first annular groove 38 and a second annular groove 40 that are recessed radially inward along the circumferential direction are provided on the side wall of the spool valve 30. The first annular groove 38 is formed slightly closer to the base end than the intermediate portion of the spool valve 30 and has a wider groove width in the axial direction. The second annular groove 40 is formed closer to the tip than the first annular groove 38 of the spool valve 30 and has a narrower groove width than the first annular groove 38. The first annular groove 38 and the second annular groove 40 communicate with each other via a communication passage 42 formed obliquely inside the spool valve 30.

スプール弁側収容凹部36は、スプール弁30の先端面から基端方向に向かって所定(第2環状溝40近くに達する)深さ陥没している。スプール弁側収容凹部36の内径は、弁バネ32の外径に略一致する。これによりスプール弁側収容凹部36は、弁バネ32の基端をぶれることなく保持する。   The spool valve-side accommodation recess 36 is recessed by a predetermined depth (approaching the vicinity of the second annular groove 40) from the distal end surface of the spool valve 30 toward the proximal direction. The inner diameter of the spool valve side accommodation recess 36 substantially matches the outer diameter of the valve spring 32. Thereby, the spool valve side accommodation recess 36 holds the base end of the valve spring 32 without being shaken.

弁バネ32は、バルブ本体12の軸方向に略一致する軸心を有するコイルスプリングとして形成される。この弁バネ32は、スプール弁30と調節栓34との間に配置される。弁バネ32の基端は、スプール弁側収容凹部36の底面に着座し、弁バネ32の先端は、後述する調節栓34の調節栓側収容凹部44の底面に着座する。弁バネ32は、調節栓34の固定に伴い収縮して収容される。そのため、弁バネ32は、調節栓34を基点に、スプール弁30を基端方向(ソレノイド部14側)に定常的に付勢する。従って、スプール弁30の基端は、ソレノイド部14の可動軸16と常に接触した状態となる。   The valve spring 32 is formed as a coil spring having an axial center that substantially coincides with the axial direction of the valve body 12. The valve spring 32 is disposed between the spool valve 30 and the adjustment plug 34. The base end of the valve spring 32 is seated on the bottom surface of the spool valve side accommodation recess 36, and the tip of the valve spring 32 is seated on the bottom surface of an adjustment plug side accommodation recess 44 of the adjustment plug 34 described later. The valve spring 32 is retracted and accommodated as the adjustment plug 34 is fixed. Therefore, the valve spring 32 constantly urges the spool valve 30 in the proximal direction (solenoid part 14 side) with the adjustment plug 34 as a base point. Therefore, the base end of the spool valve 30 is always in contact with the movable shaft 16 of the solenoid unit 14.

調節栓34は、バルブ本体12の取付孔26に収容固定されることで、弁バネ32のセット長を規定する。つまり、調節栓34の取付孔26への押込深さにより弁バネ32の初期荷重は調節される。調節栓34は、その基端側に調節栓側収容凹部44を有すると共に、先端側に押込用凹部46を有する筒状に形成される。   The adjustment plug 34 is accommodated and fixed in the mounting hole 26 of the valve body 12, thereby defining the set length of the valve spring 32. That is, the initial load of the valve spring 32 is adjusted by the depth of pressing the adjustment plug 34 into the mounting hole 26. The adjustment plug 34 is formed in a cylindrical shape having an adjustment plug side accommodation recess 44 on the base end side and a pressing recess 46 on the distal end side.

調節栓側収容凹部44は、調節栓34の基端面から先端方向に向かって所定の深さ陥没し、且つスプール弁側収容凹部36と略一致する内径を有する。上述したように、調節栓側収容凹部44には、弁バネ32の先端側が挿入される。   The adjustment stopper side accommodation recess 44 is depressed by a predetermined depth from the base end surface of the adjustment stopper 34 toward the distal end, and has an inner diameter that substantially coincides with the spool valve side accommodation recess 36. As described above, the distal end side of the valve spring 32 is inserted into the adjustment plug side accommodation recess 44.

一方、押込用凹部46には、調節栓34を取付孔26に組み付ける際に、この調節栓34を基端方向に押し込む圧入棒94(図2参照)が挿脱自在に収容される。押込用凹部46に重なる調節栓34の側周面は、取付孔26との圧入嵌合面34aとして形成される。   On the other hand, when the adjustment plug 34 is assembled into the mounting hole 26, a press-fit rod 94 (see FIG. 2) for pushing the adjustment plug 34 in the proximal direction is accommodated in the depression 46 for insertion. A side peripheral surface of the adjustment plug 34 that overlaps the depression 46 for pressing is formed as a press-fit fitting surface 34 a with the mounting hole 26.

また、調節栓側収容凹部44に重なる調節栓34の側周面は、前述の圧入嵌合面34aよりもわずかに小径な小径部34bに形成され、この小径部34bにはOリング50を装着するための環状溝部48が周方向に沿って形成されている。調節栓34は、圧入嵌合面34aにより取付孔26の内周面との間で隙間なく密着し、バルブ本体12の軸方向に対して強固に収容固定される。また、この状態では、この圧入嵌合面34aに加えてOリング50が環状溝部48に装着されることも相まって、バルブ本体12の先端側(取付孔26)は液密に閉塞される。   The side peripheral surface of the adjustment plug 34 that overlaps the adjustment plug-side accommodation recess 44 is formed as a small-diameter portion 34b that is slightly smaller in diameter than the press-fit fitting surface 34a, and an O-ring 50 is attached to the small-diameter portion 34b. An annular groove 48 is formed along the circumferential direction. The adjustment plug 34 is in close contact with the inner peripheral surface of the mounting hole 26 by the press-fitting fitting surface 34a, and is firmly housed and fixed in the axial direction of the valve body 12. Further, in this state, in addition to the press-fitting fitting surface 34a, the O-ring 50 is attached to the annular groove 48, and the distal end side (mounting hole 26) of the valve main body 12 is liquid-tightly closed.

バルブ本体12の周壁には、弁孔24とバルブ本体12の外部とを連通する複数の流路部52(以下、バルブ本体12の基端側から先端側に向かって第1〜第5ポート52a〜52eという)が設けられる。第1ポート52aは、弁孔24内のスプール弁30と可動軸16の接触部分を収容するように設けられた環状油路53aに連通すると共に、油溜Dに開放されている。第2ポート52bは、第1環状溝38からスプール弁30の基端側側壁にわたって囲繞するごとく弁孔24内に画成される環状油路53bと連通するように設けられ、第1ポート52aと同様に油溜Dに開放される。第3ポート52cは、スプール弁30の第1環状溝38に対向して設けられ、さらに自動車の油圧作動部Cに連なる流通路Bに連通する。第4ポート52dも、スプール弁30の第1環状溝38に対向可能に設けられる環状油路53c、並びに自動車の油圧源Aに連なる流通路Bに連通し、後述するスプール弁30のポート開閉作用下に油圧源Aから供給される作動油を、第1環状溝38を介して第3ポート52cへ流通する。第5ポート52eは、スプール弁30の先端が臨む弁バネ32が配置される空間に連通すると共に、オリフィス54を介して油溜Dに開放される。   The peripheral wall of the valve body 12 has a plurality of flow passage portions 52 (hereinafter referred to as first to fifth ports 52a from the proximal end side to the distal end side of the valve body 12) that communicate the valve hole 24 with the outside of the valve body 12. To 52e). The first port 52 a communicates with an annular oil passage 53 a provided so as to accommodate the contact portion between the spool valve 30 and the movable shaft 16 in the valve hole 24 and is open to the oil reservoir D. The second port 52b is provided so as to communicate with the annular oil passage 53b defined in the valve hole 24 so as to surround from the first annular groove 38 to the proximal side wall of the spool valve 30, and with the first port 52a Similarly, the oil reservoir D is opened. The third port 52c is provided so as to face the first annular groove 38 of the spool valve 30, and further communicates with the flow passage B connected to the hydraulic operation part C of the automobile. The fourth port 52d also communicates with an annular oil passage 53c provided so as to be opposed to the first annular groove 38 of the spool valve 30 and a flow passage B connected to a hydraulic pressure source A of the automobile. The hydraulic oil supplied from the hydraulic pressure source A flows through the first annular groove 38 to the third port 52c. The fifth port 52 e communicates with a space in which the valve spring 32 facing the tip of the spool valve 30 is disposed and is opened to the oil reservoir D through the orifice 54.

ソレノイドバルブ10は、ソレノイド部14への電力の供給停止状態において、図1Bに示すように、弁バネ32の付勢力によりスプール弁30を弁孔24の基端側に位置させる。この状態では、スプール弁30の側壁が第4ポート52dに対向して油圧源Aから第3ポート52cへの作動油の流動を遮断する。   The solenoid valve 10 positions the spool valve 30 on the proximal end side of the valve hole 24 by the urging force of the valve spring 32 as shown in FIG. 1B in a state where the supply of power to the solenoid unit 14 is stopped. In this state, the side wall of the spool valve 30 faces the fourth port 52d and blocks the flow of hydraulic oil from the hydraulic power source A to the third port 52c.

一方、ソレノイドバルブ10は、ソレノイド部14への電力供給状態において、可動軸16を駆動して先端方向に推進する。可動軸16は、供給電流の大きさに比例した推進力で弁バネ32の付勢力に抗してスプール弁30を先端方向に変位させる。スプール弁30は、先端方向に所定量変位することで、ポート開閉作用を成し、第3ポート52cと第4ポート52dに対し同時に第1環状溝38を連通させると共に第3ポート52cへの作動油の圧力を調圧する。従って、油圧源Aから油圧作動部Cへ供給電流の大きさに対応した通路開口を介して調圧された制御油圧が流動する。ソレノイドバルブ10は、この制御油圧に基づき油圧作動部Cを動作させることができる。   On the other hand, the solenoid valve 10 drives the movable shaft 16 in the power supply state to the solenoid unit 14 and propels it in the distal direction. The movable shaft 16 displaces the spool valve 30 in the distal direction against the urging force of the valve spring 32 with a propulsive force proportional to the magnitude of the supply current. The spool valve 30 is displaced by a predetermined amount in the distal direction, thereby opening and closing the port. The first annular groove 38 is simultaneously communicated with the third port 52c and the fourth port 52d, and the operation to the third port 52c is performed. Regulate oil pressure. Therefore, the control hydraulic pressure adjusted from the hydraulic power source A to the hydraulic operation unit C flows through the passage opening corresponding to the magnitude of the supply current. The solenoid valve 10 can operate the hydraulic actuator C based on this control hydraulic pressure.

第4ポート52dを経て第1環状溝38に供給された作動油は、連通路42を介して第2環状溝40にも分流する。連通路42は、フィードバック油路である。これにより、制御油圧は、フィードバック圧として第2環状溝40に作用し、この第2環状溝40に入力されるフィードバック圧が高まることに応じて、スプール弁30は基端方向に移動され、従って制御油圧は適宜補正(調圧)される。貫通孔22内に供給された作動油の一部は、スプール弁30の周囲を回り込んだ後に第1、第2及び第5ポート52a、52b、52eを経由してそれぞれ油溜Dに排出される。これによりスプール弁30の潤滑性が向上する。而して、第5ポート52eに設けられたオリフィス54は、その流路抵抗によりスプール弁30の軸方向振動を低減する作用を果たす。   The hydraulic fluid supplied to the first annular groove 38 via the fourth port 52d also diverts to the second annular groove 40 via the communication path 42. The communication path 42 is a feedback oil path. As a result, the control hydraulic pressure acts on the second annular groove 40 as a feedback pressure, and the spool valve 30 is moved in the proximal direction in response to an increase in the feedback pressure input to the second annular groove 40. The control oil pressure is corrected (regulated) as appropriate. A part of the hydraulic oil supplied into the through hole 22 circulates around the spool valve 30 and then is discharged to the oil reservoir D via the first, second and fifth ports 52a, 52b and 52e. The Thereby, the lubricity of the spool valve 30 is improved. Thus, the orifice 54 provided in the fifth port 52e serves to reduce the axial vibration of the spool valve 30 due to its flow path resistance.

そして、バルブ本体12には、製造時に上記の構成を貫通孔22内に組み付ける際に、バルブ本体12の軸方向の移動やバルブ本体12の変形を防止するため、保持部60が設けられている。本実施形態に係る保持部60は、図1Aに示すように、バルブ本体12の外周面13に形成した一対の溝部62により構成される。   The valve main body 12 is provided with a holding portion 60 in order to prevent the valve main body 12 from moving in the axial direction and the valve main body 12 from being deformed when the above-described configuration is assembled into the through hole 22 at the time of manufacture. . As shown in FIG. 1A, the holding portion 60 according to the present embodiment includes a pair of groove portions 62 formed on the outer peripheral surface 13 of the valve body 12.

一対の溝部62は、バルブ本体12の軸心部を挟んで互いに対向する位置(バルブ本体12の同軸上)に設けられる。溝部62は、バルブ本体12の先端側、すなわちバルブ本体12の取付孔26と重なる位置の径方向外側に形成されている。このように溝部62は、調節栓34の圧入嵌合面34aにできるだけ近接して形成されることが好ましい。これにより、調節栓34をバルブ本体12へ挿入する際にバルブ本体12を良好に保持して、挿入応力によるバルブ本体12の歪みを好適に抑止することができる。   The pair of grooves 62 are provided at positions (on the same axis as the valve main body 12) facing each other across the axial center portion of the valve main body 12. The groove portion 62 is formed on the distal end side of the valve body 12, that is, on the radially outer side at a position overlapping the mounting hole 26 of the valve body 12. Thus, the groove 62 is preferably formed as close as possible to the press-fit fitting surface 34a of the adjustment plug 34. Thereby, when inserting the adjustment plug 34 in the valve main body 12, the valve main body 12 can be hold | maintained favorably and distortion of the valve main body 12 by insertion stress can be suppressed suitably.

これら一対の溝部62は、バルブ本体12の高さ方向に沿って直線状に切り欠くことにより、溝部62の底部62a同士が互いに平行に延びるように形成されている。すなわち、底部62aが直線状に延在する溝部62は、円筒状のバルブ本体12の高さ方向中間部において最も深くなり、この中間部から上下に離間するに従って徐々に浅くなる。このような形状に形成することにより、バルブ本体12は、溝部62の形成箇所の強度低下を抑制することができる。また、平行に延びる一対の溝部62は、後述する固定部材76を溝部62の延在方向から容易に進入させることができ、しかも固定部材76と係合することでバルブ本体12の軸心回りの回転を規制することもできる。   The pair of groove portions 62 are formed so that the bottom portions 62a of the groove portions 62 extend in parallel with each other by being cut out linearly along the height direction of the valve body 12. That is, the groove part 62 in which the bottom part 62a extends linearly becomes the deepest in the intermediate part in the height direction of the cylindrical valve body 12, and becomes gradually shallower as it is vertically separated from the intermediate part. By forming it in such a shape, the valve body 12 can suppress a decrease in strength at the location where the groove 62 is formed. Further, the pair of groove portions 62 extending in parallel allows a fixing member 76 to be described later to easily enter from the extending direction of the groove portion 62, and is engaged with the fixing member 76 so as to be around the axis of the valve body 12. Rotation can also be regulated.

一対の溝部62は、最も深くなる高さ方向中間部でも取付孔26に連通しない、すなわちバルブ本体12の周壁の肉厚よりも浅く形成される。よって、取付孔26は調節栓34の挿入応力により歪むことは無く、その断面円形状は良好に保たれる。なお、溝部62の溝幅(バルブ本体12の軸方向に沿う幅)は、固定部材76と緩合(すき間ばめ)する程度に設定される。   The pair of groove portions 62 are formed so as not to communicate with the mounting hole 26 even at the deepest intermediate portion in the height direction, that is, shallower than the wall thickness of the peripheral wall of the valve body 12. Therefore, the mounting hole 26 is not distorted by the insertion stress of the adjusting plug 34, and the circular shape of the cross section is kept good. The groove width of the groove portion 62 (width along the axial direction of the valve body 12) is set to such an extent that it loosely fits (clearance fit) with the fixing member 76.

ソレノイドバルブ10は、基本的に以上のように構成されるものであり、次に、ソレノイドバルブ10のバルブ本体12に調節栓34を取り付ける組立装置70の構成について説明する。図2に示すように、この組立装置70は、基部72、治具部74、固定部材76及び押込部78を含む。   The solenoid valve 10 is basically configured as described above. Next, the configuration of the assembly device 70 for attaching the adjustment plug 34 to the valve body 12 of the solenoid valve 10 will be described. As shown in FIG. 2, the assembling apparatus 70 includes a base portion 72, a jig portion 74, a fixing member 76, and a pushing portion 78.

基部72は、方形状に形成されたブロック体であり、上面に治具部74がねじ止め固定されると共に、一の側面に押込部78がねじ止めされる。これにより、基部72は治具部74及び押込部78の相対位置を固定する。   The base portion 72 is a block body formed in a square shape, and the jig portion 74 is screwed and fixed to the upper surface, and the pushing portion 78 is screwed to one side surface. Thereby, the base 72 fixes the relative position of the jig part 74 and the pushing part 78.

治具部74は、複数の固定ボルト孔74aを有し、この固定ボルト孔74aに挿通される複数の固定ボルトにより基台(図示せず)の上面へ基部72を挟持して強固に固定される。治具部74の内部には、バルブ本体12の外形に適合し、自動車の油圧システムにおけるソレノイドバルブ10の挿入部内径(図示せず)と略一致する嵌合孔80が設けられ、治具部74はこの嵌合孔80にソレノイドバルブ10を挿脱自在に収容する。これにより嵌合孔80の内面は、バルブ本体12の外周面13に適度な摩擦力で接触してバルブ本体12を支え、バルブ本体12の曲げ・歪み変形を抑制する作用を呈する。調節栓34の押込時には、嵌合孔80の基端開口から先端方向に向かってバルブ本体12を挿入し、その先端が治具部74の先端面から露出した状態とされる。   The jig portion 74 has a plurality of fixing bolt holes 74a, and is firmly fixed by sandwiching the base portion 72 on the upper surface of a base (not shown) by a plurality of fixing bolts inserted through the fixing bolt holes 74a. The A fitting hole 80 that fits the outer shape of the valve body 12 and substantially matches the inner diameter (not shown) of the insertion portion of the solenoid valve 10 in the automobile hydraulic system is provided inside the jig portion 74. 74 accommodates the solenoid valve 10 in the fitting hole 80 so as to be detachable. As a result, the inner surface of the fitting hole 80 is brought into contact with the outer peripheral surface 13 of the valve main body 12 with an appropriate frictional force to support the valve main body 12 and to suppress the bending / distortion deformation of the valve main body 12. When the adjustment plug 34 is pushed in, the valve body 12 is inserted from the proximal end opening of the fitting hole 80 toward the distal end, and the distal end is exposed from the distal end surface of the jig portion 74.

図3Aに示すように、基部72及び治具部74には、バルブ本体12の嵌合状態で、第1〜第5ポート52a〜52eに連通する複数の試験圧力流体路82(第1〜第4圧力流体路82a〜82d)が設けられている。この場合、第1圧力流体路82aは、一方側が第1及び第2ポート52a、52bに連通するように分岐した流路に形成され、他方側が図示しない油溜に接続されている。第2圧力流体路82bは、一方側が第3ポート52cに連通すると共に、他方側が油圧計84(図2参照)に接続されている。第3圧力流体路82cは、一方側が第4ポート52dに連通すると共に、他方側が油圧源86(図2参照)に接続されている。第4圧力流体路82dは、一方側が第5ポート52eに連通すると共に、他方側が図示しない油溜に接続されている。   As shown in FIG. 3A, the base 72 and the jig portion 74 have a plurality of test pressure fluid paths 82 (first to first ports) communicating with the first to fifth ports 52 a to 52 e in the fitted state of the valve body 12. Four pressure fluid paths 82a-82d) are provided. In this case, the first pressure fluid passage 82a is formed in a flow path branched so that one side communicates with the first and second ports 52a and 52b, and the other side is connected to an oil reservoir (not shown). One side of the second pressure fluid path 82b communicates with the third port 52c, and the other side is connected to a hydraulic gauge 84 (see FIG. 2). The third pressure fluid path 82c has one side communicating with the fourth port 52d and the other side connected to a hydraulic pressure source 86 (see FIG. 2). The fourth pressure fluid path 82d has one side communicating with the fifth port 52e and the other side connected to an oil reservoir (not shown).

また、治具部74の上面には、図2及び図3Aに示すように、固定部材76を挿入するための挿入孔88が形成されている。挿入孔88は、幅方向に所定の(嵌合孔80の内径よりも長い)寸法を有すると共に軸方向寸法が後述する固定部材76の板厚に適合する断面長方形状に形成され、上面から下方向に直線状に貫通することで嵌合孔80に対し直交方向に連通している。なお、基部72の治具部74下面との対向面に挿入孔88を延長するような陥没部をさらに設けることによって、固定部材76が治具部74並びに基部72の双方へ架け渡される如く形成されてもよい。   Further, as shown in FIGS. 2 and 3A, an insertion hole 88 for inserting the fixing member 76 is formed on the upper surface of the jig portion 74. The insertion hole 88 has a predetermined dimension in the width direction (longer than the inner diameter of the fitting hole 80), and the axial dimension is formed in a rectangular cross section that matches the plate thickness of the fixing member 76 described later. It communicates in the orthogonal direction with respect to the fitting hole 80 by penetrating linearly in the direction. In addition, the fixing member 76 is formed so as to be bridged over both the jig portion 74 and the base portion 72 by further providing a recessed portion that extends the insertion hole 88 on the surface of the base portion 72 facing the lower surface of the jig portion 74. May be.

固定部材76は、バルブ本体12を治具部74の嵌合孔80に挿入した後に、挿入孔88の上面から挿入されることで、バルブ本体12の溝部62に進入してバルブ本体12を治具部74に係合する。この固定部材76は、正面視で逆U字状を呈し、治具部74に対し高さ方向に突出する突出部77が形成されている。なお、突出部77には、後述するソレノイドバルブ10の調節栓調整工程の後に固定部材76を治具部74から取り外すために利用される引っ掛け孔77aが開口されている。固定部材76の幅方向長さは、バルブ本体12の外径よりも大きく且つ挿入孔88の幅よりも小さく設定され、これにより固定部材76と挿入孔88との間には、幅方向において所定の遊び空間が形成される。この遊び空間は、固定部材76がバルブ本体12を治具部74に係合する際に、固定部材76がバルブ本体12を変形させる不都合を防ぐために設定される。なお、固定部材76は、例えば工具鋼(SK材)等の炭素鋼鋼材より製作され、その板厚と相まって、バルブ本体12への調節栓34の圧入時に、バルブ本体12を介して固定部材76自体が変形しないように形成されている。   The fixing member 76 is inserted from the upper surface of the insertion hole 88 after the valve body 12 is inserted into the fitting hole 80 of the jig portion 74, thereby entering the groove portion 62 of the valve body 12 to cure the valve body 12. Engage with the tool part 74. The fixing member 76 has an inverted U shape when viewed from the front, and is formed with a protruding portion 77 that protrudes in the height direction with respect to the jig portion 74. The protruding portion 77 is provided with a hooking hole 77a that is used to remove the fixing member 76 from the jig portion 74 after an adjustment plug adjusting step of the solenoid valve 10 described later. The length in the width direction of the fixing member 76 is set to be larger than the outer diameter of the valve body 12 and smaller than the width of the insertion hole 88, whereby a predetermined distance in the width direction is set between the fixing member 76 and the insertion hole 88. A play space is formed. This play space is set to prevent the fixing member 76 from deforming the valve body 12 when the fixing member 76 engages the valve body 12 with the jig portion 74. The fixing member 76 is made of a carbon steel material such as tool steel (SK material), for example, and coupled with the plate thickness, the fixing member 76 is inserted via the valve body 12 when the adjustment plug 34 is pressed into the valve body 12. It is formed so as not to deform itself.

固定部材76は、高さ方向の略中間部から下側に向かって突出する一対の脚部90を備える。一対の脚部90は、治具部74に挿入され保持されたバルブ本体12の一対の溝部62に進入する部分である。脚部90の幅方向長さは、バルブ本体12の溝部62の深さよりも充分に長く設定されている。つまり、脚部90は、固定部材76がバルブ本体12を保持した状態で、溝部62と治具部74の挿入孔88の両方に位置する(図4Bも参照)。従って、固定部材76は、治具部74に挿入した状態で、バルブ本体12に係合してバルブ本体12の軸方向の移動を良好に規制することができる。   The fixing member 76 includes a pair of leg portions 90 that protrude downward from a substantially middle portion in the height direction. The pair of leg portions 90 are portions that enter the pair of groove portions 62 of the valve body 12 inserted and held in the jig portion 74. The length in the width direction of the leg 90 is set sufficiently longer than the depth of the groove 62 of the valve body 12. That is, the leg portion 90 is positioned in both the groove portion 62 and the insertion hole 88 of the jig portion 74 in a state where the fixing member 76 holds the valve body 12 (see also FIG. 4B). Accordingly, the fixing member 76 can be engaged with the valve main body 12 in a state where the fixing member 76 is inserted into the jig portion 74, and can effectively restrict the movement of the valve main body 12 in the axial direction.

一方、押込部78は、複数の固定ボルト孔78aを有し、基部72の一側面に固定されるガイド部材92と、ガイド部材92のガイド孔92aに挿入されガイドされる圧入棒94とを含む。ガイド部材92は、ガイド孔92aの軸心が治具部74の嵌合孔80の軸心に一致するように基部72の上方向に突出して固定される。圧入棒94は、その一端がアクチュエータ96に接続され、中間部分がガイド部材92のガイド孔92aに挿入される。圧入棒94は、アクチュエータ96からの駆動力の付与により、ガイド孔92aのガイドに基づき治具部74及び固定部材76により固定されたバルブ本体12の軸方向に沿って進退する。   On the other hand, the push-in portion 78 has a plurality of fixing bolt holes 78a, and includes a guide member 92 fixed to one side surface of the base portion 72, and a press-fit rod 94 inserted and guided in the guide hole 92a of the guide member 92. . The guide member 92 is fixed so as to protrude upward from the base 72 so that the axis of the guide hole 92 a coincides with the axis of the fitting hole 80 of the jig portion 74. One end of the press-fit rod 94 is connected to the actuator 96, and an intermediate portion is inserted into the guide hole 92 a of the guide member 92. The press-fitting rod 94 advances and retreats along the axial direction of the valve main body 12 fixed by the jig portion 74 and the fixing member 76 based on the guide of the guide hole 92 a by applying a driving force from the actuator 96.

なお、ソレノイドバルブ10は、調節栓34を圧入棒94によって圧入する構成に代えて、調節栓34を取付孔26にねじ込む構成としてもよい。この場合、押込部78は、調節栓34を回転させつつ基端方向に押し込むねじ込み用の棒等を備えるようにし、同様に、調節栓34の押込用凹部46もねじ込み用(例えば、6角形状)にするとよい。バルブ本体12は、固定部材76の脚部90に溝部62が係合することで軸心回りの回転も規制される。このため、調節栓34をねじ込んでもバルブ本体12を強固に固定し続けて、調節栓34の位置を設定することができる。   The solenoid valve 10 may be configured such that the adjustment plug 34 is screwed into the mounting hole 26 instead of the configuration in which the adjustment plug 34 is press-fitted by the press-fitting rod 94. In this case, the pushing portion 78 includes a screwing rod or the like that pushes the adjusting plug 34 in the proximal direction while rotating the adjusting plug 34. Similarly, the pushing recess 46 of the adjusting plug 34 is also used for screwing (for example, a hexagonal shape). ). The valve body 12 is also restricted from rotating about its axis by engaging the groove 62 with the leg portion 90 of the fixing member 76. For this reason, even if the adjustment plug 34 is screwed in, the valve body 12 can be firmly fixed and the position of the adjustment plug 34 can be set.

組立装置70は、基本的には以上のように構成される。以下、この組立装置70を用いたソレノイドバルブ10の製造方法について具体的に説明していく。   The assembling apparatus 70 is basically configured as described above. Hereinafter, a method for manufacturing the solenoid valve 10 using the assembling apparatus 70 will be specifically described.

ソレノイドバルブ10の製造においては、先ずバルブ本体12の貫通孔22の基端側からスプール弁30を挿入し、次いで基端にソレノイド部14を取り付ける。これにより、ソレノイド部14の可動軸16の先端がバルブ本体12の弁孔24内に挿入される。   In manufacturing the solenoid valve 10, first, the spool valve 30 is inserted from the base end side of the through hole 22 of the valve body 12, and then the solenoid portion 14 is attached to the base end. Thereby, the tip of the movable shaft 16 of the solenoid part 14 is inserted into the valve hole 24 of the valve body 12.

次に、この状態のバルブ本体12を、組立装置70に装着及び保持させるソレノイドバルブ固定工程を実施する。ソレノイドバルブ固定工程では、治具部74の嵌合孔80の基端開口から先端方向に向かってバルブ本体12を挿入し、図3Aに示すように、治具部74によりバルブ本体12の外周面13を外嵌する。この状態では、バルブ本体12の第1、第2ポート52a、52bが治具部74の第1圧力流体路82aに連通する。また、第3ポート52cは第2圧力流体路82bに連通し、第4ポート52dは第3圧力流体路82cに連通し、第5ポート52eは第4圧力流体路82dに連通する。   Next, a solenoid valve fixing step of mounting and holding the valve body 12 in this state on the assembly apparatus 70 is performed. In the solenoid valve fixing step, the valve body 12 is inserted from the proximal end opening of the fitting hole 80 of the jig portion 74 toward the distal end, and the outer peripheral surface of the valve body 12 is moved by the jig portion 74 as shown in FIG. 3A. 13 is fitted. In this state, the first and second ports 52 a and 52 b of the valve body 12 communicate with the first pressure fluid path 82 a of the jig portion 74. The third port 52c communicates with the second pressure fluid path 82b, the fourth port 52d communicates with the third pressure fluid path 82c, and the fifth port 52e communicates with the fourth pressure fluid path 82d.

さらに、バルブ本体12を嵌合孔80により外嵌した状態で、治具部74の上面の挿入孔88から固定部材76を差し込んで、固定部材76の一対の脚部90によりバルブ本体12の一対の溝部62を係合する。すなわち、バルブ本体12の軸方向の移動を、該軸方向と直交する方向から挿入した固定部材76により規制する。これにより、バルブ本体12が治具部74に強固に固定される。   Further, in a state where the valve main body 12 is externally fitted through the fitting hole 80, the fixing member 76 is inserted from the insertion hole 88 on the upper surface of the jig portion 74, and a pair of the valve main body 12 is connected by the pair of leg portions 90 of the fixing member 76. The groove 62 is engaged. That is, the movement of the valve body 12 in the axial direction is restricted by the fixing member 76 inserted from the direction orthogonal to the axial direction. Thereby, the valve body 12 is firmly fixed to the jig portion 74.

ソレノイドバルブ固定工程の実施後は、調節栓仮挿入工程を実施する。調節栓仮挿入工程では、圧入棒94をバルブ本体12から離間させた状態で、バルブ本体12の貫通孔22に対し弁バネ32を挿入し、先端開口26aに調節栓34を嵌め込む。つまり、図3Bに示すように、調節栓34のOリング50の装着部分である、圧入嵌合面34aよりもわずかに小径な小径部34bだけがバルブ本体12の取付孔26内に挿入され、Oリング50により調節栓34が取付孔26内に保持されると共に、調節栓側収容凹部44及びスプール弁側収容凹部36に弁バネ32が収容された状態とする。その後、アクチュエータ96を駆動して圧入棒94をバルブ本体12に向けて移動し、調節栓34の押込用凹部46に圧入棒94が進入し軽く接した状態でアクチュエータ96の駆動を停止する。   After the solenoid valve fixing step is performed, a control plug temporary insertion step is performed. In the adjustment plug temporary insertion step, the valve spring 32 is inserted into the through hole 22 of the valve main body 12 with the press-fitting rod 94 separated from the valve main body 12, and the adjustment plug 34 is fitted into the tip opening 26a. That is, as shown in FIG. 3B, only the small-diameter portion 34b, which is a portion where the O-ring 50 of the adjustment plug 34 is mounted, which is slightly smaller in diameter than the press-fitting fitting surface 34a, is inserted into the mounting hole 26 of the valve body 12. The adjustment plug 34 is held in the mounting hole 26 by the O-ring 50, and the valve spring 32 is accommodated in the adjustment plug side accommodation recess 44 and the spool valve side accommodation recess 36. Thereafter, the actuator 96 is driven to move the press-fit rod 94 toward the valve main body 12, and the drive of the actuator 96 is stopped in a state where the press-fit rod 94 enters the pushing recess 46 of the adjustment plug 34 and is lightly in contact therewith.

調節栓仮挿入工程の実施後は、準備工程を実施する。準備工程では、油圧源86から組立装置70の第3圧力流体路82cに向けて、所定の基準圧(例えば200kPa)の作動油を供給する。さらにこの状態で、ソレノイド部14のカプラ20からコイル部18に所定の電力(例えば中間電流)を供給し、基準の励磁状態とする。これにより、可動軸16が先端方向に移動することになり、この可動軸16に押圧されてスプール弁30も先端方向に変位する。   After the adjustment plug temporary insertion step, a preparation step is performed. In the preparation process, hydraulic oil having a predetermined reference pressure (for example, 200 kPa) is supplied from the hydraulic pressure source 86 toward the third pressure fluid path 82c of the assembling apparatus 70. Further, in this state, predetermined power (for example, an intermediate current) is supplied from the coupler 20 of the solenoid unit 14 to the coil unit 18 to obtain a reference excitation state. As a result, the movable shaft 16 moves in the distal direction, and the spool valve 30 is also displaced in the distal direction by being pressed by the movable shaft 16.

そして、上記の準備工程を実施した状態で調節栓調整工程を実施する。調節栓調整工程では、組立装置70の第2圧力流体路82bから出力される作動油の圧力を油圧計84で計測(モニタリング)しながら再びアクチュエータ96を駆動して、バルブ本体12の基端方向に向けて圧入棒94を徐々に移動する。これにより、調節栓34の圧入嵌合面34aがバルブ本体12の取付孔26の基端方向に徐々に押し込まれていく。   And the adjustment plug adjustment process is implemented in the state which implemented said preparation process. In the adjustment plug adjustment process, the actuator 96 is driven again while measuring the pressure of the hydraulic oil output from the second pressure fluid passage 82b of the assembling apparatus 70 with the oil pressure gauge 84, and the proximal direction of the valve body 12 is determined. The press-fitting rod 94 is gradually moved toward. As a result, the press-fitting fitting surface 34 a of the adjustment plug 34 is gradually pushed toward the proximal end of the mounting hole 26 of the valve body 12.

ここで、バルブ本体12は、図4A及び図4Bに示すように、固定部材76の脚部90が溝部62を係合していることで、治具部74に対し軸方向の移動が規制されている。従って、圧入棒94を圧入してもバルブ本体12が移動することなく、調節栓34のみを基端方向に押し込むことができる。特に、固定部材76は、バルブ本体12の先端部付近(取付孔26の径方向外側)を固定しているので、圧入棒94の押込力をこの固定部材76において受けることができる。従って、バルブ本体12の基端側に押込力が伝達されることを防ぐことができ、バルブ本体12の胴体部12aの変形が抑止される。なお、弁バネ32は、調節栓34の押し込みに伴い収縮が促進される。   Here, as shown in FIGS. 4A and 4B, the valve main body 12 is restricted from moving in the axial direction with respect to the jig portion 74 because the leg portion 90 of the fixing member 76 engages the groove portion 62. ing. Therefore, even if the press-fitting rod 94 is press-fitted, only the adjustment plug 34 can be pushed in the proximal direction without moving the valve body 12. In particular, since the fixing member 76 fixes the vicinity of the tip end portion of the valve body 12 (the radially outer side of the mounting hole 26), the pressing force of the press-fit rod 94 can be received by the fixing member 76. Therefore, it is possible to prevent the pushing force from being transmitted to the proximal end side of the valve main body 12, and the deformation of the body portion 12a of the valve main body 12 is suppressed. The valve spring 32 is accelerated to contract as the adjustment plug 34 is pushed.

調節栓調整工程により、調節栓34を押し込むことで作動油の流動量が変化する。そのため、油圧計84を監視(測定)して、作動油の圧力が規定の圧(例えば、100kPa)に至ったところで圧入棒94の押し込みを停止し、調節栓調整工程を終了する。   The flow amount of hydraulic oil changes by pushing in the adjustment plug 34 by the adjustment plug adjustment process. Therefore, the oil pressure gauge 84 is monitored (measured), and when the pressure of the hydraulic oil reaches a specified pressure (for example, 100 kPa), the pushing-in of the press-fitting rod 94 is stopped, and the adjustment plug adjustment process is terminated.

その後は、第3圧力流体路82cに対する油圧の供給を停止し、作動油の代わりに工場エアを吹き込みソレノイドバルブ10内に残っている作動油を抜き取る。その後、圧入棒94を調節栓34から退避させる。なおこのとき、調節栓34は圧入嵌合面34aにより取付孔26内へ強固に固定されており、従って退避させる圧入棒94には追従せず圧入棒94の押し込みを停止した位置にそのまま残留することとなる。さらに、固定部材76の引っ掛け孔77aに所定の工具を掛けて上方に吊り上げることで、固定部材76を治具部74から抜き取り、ソレノイドバルブ10を治具部74から取り外すことで、ソレノイドバルブ10の製造(組立調整)を完了する。   Thereafter, the supply of hydraulic pressure to the third pressure fluid passage 82c is stopped, and factory air is blown in place of the hydraulic oil, and the hydraulic oil remaining in the solenoid valve 10 is extracted. Thereafter, the press-fit rod 94 is retracted from the adjustment plug 34. At this time, the adjustment plug 34 is firmly fixed in the mounting hole 26 by the press-fitting fitting surface 34a, and therefore does not follow the retracted press-fit rod 94 and remains in the position where the push-in of the press-fit rod 94 is stopped. It will be. Furthermore, by hanging a predetermined tool on the hooking hole 77a of the fixing member 76 and lifting it upward, the fixing member 76 is removed from the jig portion 74, and the solenoid valve 10 is removed from the jig portion 74. Complete manufacturing (assembly adjustment).

以上のように、本実施形態に係るソレノイドバルブ10及びその製造方法によれば、保持部60を備えることで、その製造時に、調節栓34が固定される取付孔26の外側位置でバルブ本体12を保持することにより、バルブ本体12の変形を抑止することができる。すなわち、調節栓34を取付孔26に固定する際に、取付孔26近くの保持部60により調節栓34の押込力を受けるので、取付孔26よりも基端側のバルブ本体12に押込力が伝わることを防いで、流路部52付近に歪みが生じることがなくなる。従って、バルブ本体12に対しスプール弁30及び調節栓34を高精度に嵌め合わせることが可能となり、製品の高品質化が図られる。また、スプール弁30を高精度に収容配置することで、ソレノイド部14の電磁推力を小さくすることが可能となり、ソレノイド部14の小型化も図られる。さらに、バルブ本体12の強度を下げて、薄肉化(小型化)及び軽量化を一層促進することができる。   As described above, according to the solenoid valve 10 and the method for manufacturing the same according to the present embodiment, the valve main body 12 is provided at the outer position of the mounting hole 26 to which the adjustment plug 34 is fixed by providing the holding portion 60. By holding this, deformation of the valve body 12 can be suppressed. That is, when the adjusting plug 34 is fixed to the mounting hole 26, the pressing force of the adjusting plug 34 is received by the holding portion 60 near the mounting hole 26, so that the pressing force is applied to the valve body 12 on the base end side with respect to the mounting hole 26. This prevents transmission and prevents distortion near the flow path portion 52. Therefore, the spool valve 30 and the adjustment plug 34 can be fitted to the valve body 12 with high accuracy, and the quality of the product can be improved. Further, by accommodating and arranging the spool valve 30 with high accuracy, the electromagnetic thrust of the solenoid unit 14 can be reduced, and the solenoid unit 14 can be downsized. Furthermore, the strength of the valve main body 12 can be reduced to further promote thinning (downsizing) and weight reduction.

この場合、保持部60を一対の溝部62により構成することで、溝部62に嵌め合わせる固定部材76をバルブ本体12に向けて落とし込むだけで、バルブ本体12を固定することができ、ソレノイドバルブ10の製造を容易化することができる。   In this case, by configuring the holding portion 60 with the pair of groove portions 62, the valve main body 12 can be fixed simply by dropping the fixing member 76 fitted into the groove portion 62 toward the valve main body 12. Manufacturing can be facilitated.

また、バルブ本体12は、固定部材76を治具部74に差し込むだけで固定され、固定部材76自体も治具部74に内挿することで補剛される。よって、調節栓34の取付時に固定部材76が変形し、ソレノイドバルブ10がずれて変形してしまう不都合を防ぐことができる。さらに、治具部74に試験圧力流体路82が設けられることで、バルブ本体12を嵌めるだけで流路部52を試験圧力流体路82に連通させることができる。治具部74は、調節栓調整工程の実施時に、試験圧力流体路82を介してバルブ本体12への圧力流体の供給を良好に行うことができる。   Further, the valve body 12 is fixed by simply inserting the fixing member 76 into the jig portion 74, and the fixing member 76 itself is stiffened by being inserted into the jig portion 74. Therefore, it is possible to prevent a problem that the fixing member 76 is deformed when the adjustment plug 34 is attached, and the solenoid valve 10 is displaced and deformed. Further, the test pressure fluid passage 82 is provided in the jig portion 74, so that the flow passage portion 52 can be communicated with the test pressure fluid passage 82 only by fitting the valve body 12. The jig portion 74 can satisfactorily supply the pressure fluid to the valve body 12 via the test pressure fluid passage 82 when the adjustment plug adjustment process is performed.

上記において、本発明について好適な実施形態を挙げて説明したが、本発明は前記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々の改変が可能なことは言うまでもない。例えば、ソレノイドバルブ10は、変速機で使用する作動油、エンジンや自動変速機の摺動部に供給する潤滑油、エンジン等の高温部に循環供給される冷却水等、種々の圧力流体の流動を制御する目的で自動車の適宜な箇所に設けられてよい。   In the above description, the present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Yes. For example, the solenoid valve 10 is used for the flow of various pressure fluids such as hydraulic oil used in a transmission, lubricating oil supplied to a sliding part of an engine or an automatic transmission, cooling water circulated and supplied to a high temperature part of the engine or the like. It may be provided at an appropriate location of the automobile for the purpose of controlling the motor.

また、組立装置70は、治具部74と固定部材76を別部材とする構成に限定されるものではない。例えば、治具部74を分割可能として嵌合孔80を開放する構成であれば、嵌合孔80の内面に上記の脚部90に相当する係止部(凸部等)を一体成形した構成でもよい。また治具部74と固定部材76を機械的に組み付けておき、バルブ本体12を嵌合孔80に嵌合した際に、固定部材76の脚部90が溝部62に自動的に(又は手動で)挿入される構成でもよい。   The assembling apparatus 70 is not limited to the configuration in which the jig portion 74 and the fixing member 76 are separate members. For example, if it is the structure which open | releases the fitting hole 80 so that the jig | tool part 74 can be divided | segmented, the structure which integrally formed the latching | locking part (convex part etc.) equivalent to said leg part 90 in the inner surface of the fitting hole 80 But you can. Further, when the jig portion 74 and the fixing member 76 are mechanically assembled and the valve body 12 is fitted into the fitting hole 80, the leg portion 90 of the fixing member 76 is automatically (or manually) fitted into the groove portion 62. ) It may be configured to be inserted.

また、バルブ本体12を保持する保持部60は、一対の溝部62に限定されず種々の構成を適用することが可能であり、例えば、溝部62は、3以上設けられ、溝部62がバルブ本体12の周方向に沿って断面視でコ字状に配置されてもよい。この場合、固定部材76も同様にコ字状に形成されることで溝部62と嵌め合うことになり、バルブ本体12の軸心回りの回転をより強固に規制することができる。   The holding portion 60 that holds the valve main body 12 is not limited to the pair of groove portions 62, and various configurations can be applied. For example, three or more groove portions 62 are provided, and the groove portions 62 are provided in the valve main body 12. It may be arranged in a U shape in a sectional view along the circumferential direction. In this case, the fixing member 76 is similarly formed in a U-shape, so that it fits into the groove 62, and the rotation of the valve body 12 around the axis can be more firmly regulated.

10…ソレノイドバルブ 12…バルブ本体
14…ソレノイド部 22…貫通孔
24…弁孔 26…取付孔
30…スプール弁 32…弁バネ
34…調節栓 52…流路部
60…保持部 62…溝部
70…組立装置 74…治具部
76…固定部材 78…押込部
80…嵌合孔 82…試験圧力流体路
90…脚部
DESCRIPTION OF SYMBOLS 10 ... Solenoid valve 12 ... Valve body 14 ... Solenoid part 22 ... Through-hole 24 ... Valve hole 26 ... Mounting hole 30 ... Spool valve 32 ... Valve spring 34 ... Adjustment plug 52 ... Flow path part 60 ... Holding part 62 ... Groove part 70 ... Assembly device 74 ... Jig part 76 ... Fixing member 78 ... Pushing part 80 ... Fitting hole 82 ... Test pressure fluid path 90 ... Leg part

Claims (4)

電磁推力を付与してスプール弁を軸方向に押圧するソレノイド部と、
前記ソレノイド部が一端に取り付けられると共に、前記スプール弁を摺動可能に収容する弁孔と、電磁推力作用下の前記スプール弁と前記弁孔との位置関係を調節する調節栓と、前記ソレノイド部とは反対側の他端部内で前記弁孔に連なる圧入嵌合面を有して該圧入嵌合面に前記調節栓を収容固定する取付孔と、前記弁孔と外部とを連通する複数の流路部とを有するバルブ本体と、を含むソレノイドバルブであって、
前記取付孔の径方向外側に位置する前記バルブ本体の外周面には、前記バルブ本体軸方向の移動及び軸心回りの回転を規制するための保持部が設けられ
前記保持部は、前記バルブ本体の軸方向と直交する方向に沿って前記バルブ本体の外周面を直線状に切り欠くことにより底部同士が互いに平行に延びるように形成されている一対の溝部である、ソレノイドバルブ。
A solenoid portion that applies electromagnetic thrust to press the spool valve in the axial direction;
The solenoid part is attached to one end, a valve hole for slidably housing the spool valve, an adjustment plug for adjusting the positional relationship between the spool valve and the valve hole under the action of electromagnetic thrust, and the solenoid part communicates with the mounting hole, and said valve hole and the outside for accommodating fixing the adjusting plug Tsurana press-fitted with a mating surface on the piezoelectric inlet fitting surface that the valve hole in the other end portion opposite to the A solenoid valve including a valve body having a plurality of flow paths,
Wherein the outer peripheral surface of the valve body located radially outward of the mounting hole, the holding portion for regulating the movement and rotation of the axis about the axial direction of the valve body is provided,
The holding portions are a pair of grooves formed so that the bottoms extend in parallel with each other by cutting out the outer peripheral surface of the valve main body linearly along a direction orthogonal to the axial direction of the valve main body. , Solenoid valve.
請求項1記載のソレノイドバルブにおいて、
前記バルブ本体は、円筒状であり、
前記溝部は、前記直交する方向の中間部において最も深く、該中間部から前記直交する方向に離れる程浅くなる、ソレノイドバルブ。
The solenoid valve according to claim 1, wherein
The valve body is cylindrical,
The solenoid valve is a solenoid valve that is deepest at an intermediate portion in the orthogonal direction and becomes shallower as the distance from the intermediate portion increases in the orthogonal direction .
電磁推力を付与してスプール弁を軸方向に押圧するソレノイド部と、
前記ソレノイド部が一端に取り付けられると共に、前記スプール弁を摺動可能に収容する弁孔と、電磁推力作用下の前記スプール弁と前記弁孔との位置関係を調節する調節栓と、前記ソレノイド部とは反対側の他端部内で前記弁孔に連なり前記調節栓を収容固定する取付孔と、前記弁孔と外部とを連通する複数の流路部とを有するバルブ本体と、を含むソレノイドバルブの製造方法であって、
前記取付孔の径方向外側に位置する前記バルブ本体の外周面には、前記バルブ本体軸方向の移動及び軸心回りの回転を規制するための保持部が設けられるものであり、
組立装置の治具部によりバルブ本体の外周面を外嵌し、且つ前記治具部に前記バルブ本体の軸方向と異なる方向から固定部材を差し込んで該固定部材により前記保持部を保持するソレノイドバルブ固定工程と、
前記ソレノイドバルブに圧力流体を流通すると共に前記ソレノイド部に所定の通電を行って前記スプール弁を作動させる準備工程と、
前記圧力流体の圧力を測定しながら前記調節栓を前記取付孔内に進入させていき、前記圧力流体の圧力が予め規定された圧に至ったときに前記調節栓の進入を終了する調節栓調整工程と、を有するソレノイドバルブの製造方法。
A solenoid portion that applies electromagnetic thrust to press the spool valve in the axial direction;
The solenoid part is attached to one end, a valve hole for slidably housing the spool valve, an adjustment plug for adjusting the positional relationship between the spool valve and the valve hole under the action of electromagnetic thrust, and the solenoid part A valve body having a mounting hole that is connected to the valve hole in the other end opposite to the valve and accommodates and fixes the adjustment plug, and a valve body that has a plurality of flow passage portions that communicate the valve hole and the outside. A manufacturing method of
Wherein the outer peripheral surface of the valve body located radially outward of the mounting hole, which holding portion for regulating the movement and rotation of the axis about the axial direction of the valve body is provided,
A solenoid valve that externally fits the outer peripheral surface of the valve body by a jig portion of the assembly apparatus, and that holds the holding portion by the fixing member by inserting a fixing member into the jig portion from a direction different from the axial direction of the valve body. A fixing process;
A preparatory step of operating the spool valve by circulating a pressure fluid through the solenoid valve and applying a predetermined current to the solenoid portion;
Adjusting plug adjustment that advances the adjusting plug into the mounting hole while measuring the pressure fluid pressure, and terminates the entering of the adjusting plug when the pressure fluid reaches a predetermined pressure. A method of manufacturing a solenoid valve.
請求項3記載のソレノイドバルブの製造方法において、
前記治具部には、前記バルブ本体の流路部に対応する複数の試験圧力流体路が設けられ
前記ソレノイドバルブ固定工程において、前記固定部材により前記保持部を保持するとともに前記流路部が前記試験圧力流体路に連通する、ソレノイドバルブの製造方法。
In the manufacturing method of the solenoid valve according to claim 3,
The jig part is provided with a plurality of test pressure fluid paths corresponding to the flow path part of the valve body ,
In the solenoid valve fixing step, the holding member is held by the fixing member, and the flow path portion communicates with the test pressure fluid path .
JP2014120488A 2014-06-11 2014-06-11 Solenoid valve and manufacturing method thereof Expired - Fee Related JP6423178B2 (en)

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