JP2013224681A - Poppet valve press fit structure - Google Patents

Poppet valve press fit structure Download PDF

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JP2013224681A
JP2013224681A JP2012096133A JP2012096133A JP2013224681A JP 2013224681 A JP2013224681 A JP 2013224681A JP 2012096133 A JP2012096133 A JP 2012096133A JP 2012096133 A JP2012096133 A JP 2012096133A JP 2013224681 A JP2013224681 A JP 2013224681A
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press
poppet valve
valve
valve body
thickness
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JP5976372B2 (en
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Hironori Sanuki
宏典 佐貫
Satoshi Yabushita
聡 藪下
Takashi Takai
貴志 高井
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Nidec Powertrain Systems Corp
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Nidec Tosok Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a poppet valve press fit structure which can secure leakage performance by restraining deformation at a sealing part of a poppet valve.SOLUTION: A poppet valve press fit structure is configured to set respective press fitted parts 92, 93 in which respective protuberances 73, 74 projected on a press fitting pin 71 locate in a position different from a sealing part 91 in which a poppet valve 81 abuts against a valve seat part 64 of an opening/closing flow port 61 in a press fit state that press-fits the press fitting pin 71 in the poppet valve. In addition, the wall thickness from the peripheral surface of the poppet valve to an insertion hole 85 is set so that the wall thickness at the base end side press fitted part 92 is thicker than the wall thickness at the sealing part 91.

Description

本発明は、比例制御弁用のポペットバルブ圧入構造に関する。   The present invention relates to a poppet valve press-fitting structure for a proportional control valve.

従来、自動車の自動変速機の油圧回路において油圧を制御する際には、電磁弁が用いられており、該電磁弁には、通流量をオンオフ制御するオンオフタイプが知られている（例えば、特許文献１）。   2. Description of the Related Art Conventionally, when controlling hydraulic pressure in a hydraulic circuit of an automatic transmission of an automobile, an electromagnetic valve has been used, and an on / off type for controlling on / off of a flow rate is known as the electromagnetic valve (for example, a patent) Reference 1).

このようなオンオフタイプの電磁弁８０１としては、図３に示すようなものが挙げられる。   An example of such an on / off type electromagnetic valve 801 is shown in FIG.

この電磁弁８０１のカバー８１１を内には、ソレノイド８１２が収容されており、該ソレノイド８１２内には、コア８１３が設けられている。該コア８１３には、作動軸８１４が上下動自在に挿通しており、前記コア８１３より上方へ延出した前記作動軸８１４の上端部には、前記コア８１３に吸引される円板状の被吸引部８１５が固定されている。   A solenoid 812 is accommodated in the cover 811 of the electromagnetic valve 801, and a core 813 is provided in the solenoid 812. An operating shaft 814 is inserted through the core 813 so as to be movable up and down. The upper end of the operating shaft 814 extending upward from the core 813 has a disk-shaped object to be sucked by the core 813. A suction part 815 is fixed.

前記コア８１３より下方へ延出した前記作動軸８１４の下端側は、シート部材８２１の上面に設けられた上部シート穴８２２を挿通しており、この部位には、該上部シート穴８２２を開閉する上部弁体８２３が設けられている。   The lower end side of the operating shaft 814 extending downward from the core 813 passes through an upper seat hole 822 provided on the upper surface of the sheet member 821, and the upper seat hole 822 is opened and closed at this portion. An upper valve body 823 is provided.

前記作動軸８１４の下端部は、前記シート部材８２１に設けられた下部シート穴８３１を挿通しており、該シート部材８２１より下側へ延出した前記作動軸８１４の部分には、前記下部シート穴８３１を開閉する下部弁体８３２が設けられている。   The lower end portion of the operating shaft 814 passes through a lower seat hole 831 provided in the sheet member 821, and the lower portion of the operating shaft 814 extending downward from the sheet member 821 has the lower seat. A lower valve body 832 that opens and closes the hole 831 is provided.

すなわち、前記作動軸８１４の先端部には、小径円柱状の弁耐圧入部８４１が形成されており、該弁耐圧入部８４１に前記下部弁体８３２が固定されている。前記弁耐圧入部８４１の外周面には、先端側凸条８４２と基端側凸条８４３とが周面に沿って形成されており、前記下部弁体８３２は、合成樹脂で形成されている。   In other words, a small-diameter columnar valve pressure-resistant insertion portion 841 is formed at the distal end portion of the operating shaft 814, and the lower valve body 832 is fixed to the valve pressure-resistant insertion portion 841. On the outer peripheral surface of the valve pressure-resistant insertion portion 841, a distal-side convex ridge 842 and a proximal-side convex ridge 843 are formed along the peripheral surface, and the lower valve body 832 is formed of a synthetic resin.

これにより、前記下部弁体８３２の差込穴８５１へ前記弁耐圧入部８４１を圧入する際に、該弁耐圧入部８４１の前記各凸条８４２，８４３が前記差込穴８５１を広げながら当該差込穴８５１を進むとともに、圧入停止位置において前記差込穴８５１を外側に広げる力が作用することで、当該下部弁体８３２の不用意な抜けを防止できるように構成されている。   Accordingly, when the valve pressure-resistant insertion portion 841 is press-fitted into the insertion hole 851 of the lower valve body 832, the protrusions 842 and 843 of the valve pressure-proof insertion portion 841 are expanded while the insertion hole 851 is expanded. While proceeding through the hole 851, a force that expands the insertion hole 851 to the outside at the press-fitting stop position acts to prevent the lower valve body 832 from being inadvertently pulled out.

このような電磁弁８０１において、前記下部シート穴８３１の通流量の制御を行う際には、前記下部弁体８３２を、テーパー形状のポペットバルブに変更する必要がある。   In such an electromagnetic valve 801, when the flow rate of the lower seat hole 831 is controlled, the lower valve body 832 needs to be changed to a tapered poppet valve.

これにより、このポペットバルブの前記下部シート穴８３１への挿入量を制御することで、当該ポペットバルブと前記下部シート穴８３１との間に形成される間隙面積を変動し、通流量を制御できるように構成する。   Thus, by controlling the amount of insertion of the poppet valve into the lower seat hole 831, the gap area formed between the poppet valve and the lower seat hole 831 can be changed, and the flow rate can be controlled. Configure.

特開２００５−５１３３９０号公報JP 2005-513390 A

しかしながら、このようなポペットバルブ圧入構造にあっては、ポペットバルブで下部シート穴８３１を閉鎖した状態において、当該下部シート穴８３１の開口縁部に当接する前記ポペットバルブ周面のシール部における裏側に基端側凸条８４３が配置されてしまう。   However, in such a poppet valve press-fitting structure, in a state where the lower seat hole 831 is closed by the poppet valve, the poppet valve is in contact with the opening edge of the lower seat hole 831 on the back side of the seal portion of the peripheral surface of the poppet valve. Proximal ridge 843 will be arranged.

この場合、前記シール部での変形が大きくなるため、真円度の精度確保が困難となる。これにより、前記下部シート穴８３１でのリーク性能が低下する恐れがあった。   In this case, since the deformation at the seal portion becomes large, it is difficult to ensure the accuracy of roundness. As a result, the leak performance at the lower sheet hole 831 may be reduced.

本発明は、このような従来の課題に鑑みてなされたものであり、ポペットバルブのシール部での変形を抑えることでリーク性能を確保することができるポペットバルブ圧入構造を提供することを目的とするものである。   The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a poppet valve press-fitting structure capable of ensuring leakage performance by suppressing deformation at the seal portion of the poppet valve. To do.

前記課題を解決するために本発明の請求項１のポペットバルブ圧入構造にあっては、作動軸に設けられた弁体に、一端側から他端側へ向けて外形寸法が縮径する略テーパ状のテーパ部が設けられ、前記弁体の周面を通流口の開口縁部に当接して前記通流口を閉鎖した閉鎖状態と、前記作動軸を軸方向へ移動して前記開口縁部及び前記弁体間の間隙を変化して通流量を制御する制御状態とを形成する比例電磁弁におけるポペットバルブ圧入構造であって、前記弁体の挿入穴に圧入される前記作動軸の圧入部分に外側に突出した突出部が形成されたポペットバルブ圧入構造において、前記圧入部分に前記弁体を圧入した状態で、前記開口縁部に当接する前記弁体周面のシール部と、前記突出部が位置する圧入部とを前記作動軸の軸方向にて異なる位置に設定するとともに、前記弁体の周面から前記挿入穴までの肉厚が、前記シール部での肉厚より前記圧入部での肉厚が厚肉となるように設定した。   In order to solve the above-mentioned problem, in the poppet valve press-fitting structure according to claim 1 of the present invention, the valve body provided on the operating shaft has a substantially tapered shape whose outer dimension is reduced from one end side to the other end side. And a closed state in which the flow passage is closed by abutting against the opening edge of the flow port through the peripheral surface of the valve body, and the opening edge by moving the operating shaft in the axial direction. A poppet valve press-fitting structure in a proportional solenoid valve that forms a control state in which the gap between the valve body and the valve body is changed to control the flow rate, and the press-fitting of the operating shaft press-fitted into the insertion hole of the valve body In a poppet valve press-fitting structure in which a protruding portion that protrudes outward is formed in the portion, the valve body peripheral surface abutting against the opening edge in the state where the valve body is press-fitted into the press-fitted portion, and the protrusion The press-fitting part where the part is located differs in the axial direction of the operating shaft And it sets the location, thickness from the circumferential surface of the valve body to the insertion hole, the wall thickness at the press-fitting portion than the wall thickness at the sealing portion is set to be thicker.

すなわち、弁体の挿入穴に作動軸の圧入部分を圧入した状態において、該圧入部分に突設された突出部が位置する弁体の圧入部は、通流口の開口縁部に当接する当該弁体周面のシール部と異なる位置に設定されている。   That is, in a state where the press-fitting part of the operating shaft is press-fitted into the insertion hole of the valve element, the press-fitting part of the valve element where the projecting part protruding from the press-fitting part is located is in contact with the opening edge of the flow port It is set at a position different from the seal portion of the valve body peripheral surface.

このため、前記圧入部と前記シール部とが前記作動軸の軸方向で同位置に設定され、前記シール部の真下に前記突出部が配置される従来と比較して、前記弁体の前記挿入穴の壁面を外側に押圧する前記突出部に起因した前記シール部の変形が抑制される。   For this reason, the insertion of the valve body is performed as compared with the conventional case in which the press-fitting portion and the seal portion are set at the same position in the axial direction of the operating shaft, and the protruding portion is disposed directly below the seal portion. Deformation of the seal portion due to the protruding portion pressing the wall surface of the hole outward is suppressed.

また、前記弁体の周面から前記挿入穴までの肉厚は、前記シール部での肉厚より前記圧入部での肉厚が厚肉となるように設定されている。   Further, the thickness from the peripheral surface of the valve body to the insertion hole is set such that the thickness at the press-fitting portion is thicker than the thickness at the seal portion.

このため、前記弁体の前記挿入穴の壁面を外側に押圧する前記突出部が薄肉部分に形成された場合と比較して、前記押圧による変形の吸収代が大きくなり、当該弁体周面への影響が抑えられる。   For this reason, as compared with the case where the protruding portion that presses the wall surface of the insertion hole of the valve body outward is formed in a thin portion, an absorption margin for deformation due to the pressing is increased, and the valve body circumferential surface is The influence of is suppressed.

また、請求項２のポペットバルブ圧入構造においては、前記シール部での肉厚より肉厚の大きな方向に前記突出部を複数設けた。   In the poppet valve press-fitting structure according to claim 2, a plurality of the projecting portions are provided in a direction in which the thickness is larger than the thickness of the seal portion.

すなわち、前記突出部は、肉厚の大きな方向に複数設けられており、これら突出部による当該弁体の抜け防止効果が高められ、かつ弁体周面への影響が抑制される。   That is, a plurality of the protrusions are provided in the direction of increasing thickness, and the effect of preventing the valve body from being removed by the protrusions is enhanced, and the influence on the peripheral surface of the valve body is suppressed.

さらに、請求項３のポペットバルブ圧入構造では、前記テーパ部の縮径側に位置する前記弁体の先端が当接し、当該弁体の軸方向の移動を規制する突き当て部を前記作動軸に設けた。   Furthermore, in the poppet valve press-fitting structure according to claim 3, the tip of the valve body located on the diameter-reduced side of the tapered portion abuts, and an abutting portion that restricts the axial movement of the valve body is used as the operating shaft. Provided.

すなわち、弁体を圧入部分に圧入した際には、テーパ部の縮径側に位置する前記弁体の先端が作動軸に設けられた突き当て部に当接することで、前記弁体の軸方向への移動が規制され、位置決めされる。   That is, when the valve body is press-fitted into the press-fitted portion, the tip of the valve body located on the diameter-reduced side of the taper portion comes into contact with the abutting portion provided on the operating shaft, so that the axial direction of the valve body Movement is restricted and positioned.

以上説明したように本発明の請求項１のポペットバルブ圧入構造にあっては、圧入部分に突設された突出部が位置する弁体の圧入部を、通流口の開口縁部に当接する当該弁体周面のシール部と異なる位置に設定したので、前記圧入部と前記シール部とが前記作動軸の軸方向で同位置に設定され前記シール部の真下に前記突出部が配置される従来と比較して、前記弁体の挿入穴の壁面を外側に押圧する前記突出部に起因した前記シール部の変形を抑制することができる。   As described above, in the poppet valve press-fitting structure according to the first aspect of the present invention, the press-fitting portion of the valve body in which the projecting portion projecting from the press-fitting portion is abutted with the opening edge of the flow opening. Since it is set at a position different from the seal portion on the peripheral surface of the valve body, the press-fit portion and the seal portion are set at the same position in the axial direction of the operating shaft, and the projecting portion is disposed directly below the seal portion. Compared with the prior art, it is possible to suppress deformation of the seal portion due to the protruding portion pressing the wall surface of the insertion hole of the valve body outward.

また、前記弁体の周面から前記挿入穴までの肉厚を、前記シール部での肉厚より前記圧入部での肉厚が厚肉となるように設定したので、前記弁体の前記挿入穴の壁面を外側に押圧する前記突出部が薄肉部分に形成された場合と比較して、前記押圧による変形の吸収代を大きくすることができ、当該弁体周面への影響を抑えることができる。   Further, since the thickness from the peripheral surface of the valve body to the insertion hole is set so that the thickness at the press-fitting portion is thicker than the thickness at the seal portion, the insertion of the valve body is performed. Compared with the case where the protruding portion that presses the wall surface of the hole outward is formed in a thin portion, the absorption allowance of deformation due to the pressing can be increased, and the influence on the peripheral surface of the valve body can be suppressed. it can.

これらにより、前記弁体周面の前記シール部での変形を抑えることができ、当該シール部での真円度の精度の確保が容易となり、当該弁体で開閉する通流口でのリーク性能を向上することができる。   As a result, it is possible to suppress deformation of the peripheral surface of the valve body at the seal portion, and it is easy to ensure the accuracy of roundness at the seal portion, and leakage performance at a flow opening that opens and closes by the valve body Can be improved.

また、請求項２のポペットバルブ圧入構造においては、突出部を肉厚の大きな方向に複数設けることによって、これら突出部による当該弁体の抜け防止効果を高めることができるとともに、前記弁体周面への影響も抑制することができる。   Further, in the poppet valve press-fitting structure according to claim 2, by providing a plurality of protrusions in the direction of increasing thickness, it is possible to increase the effect of preventing the valve body from being removed by the protrusions, and The influence on can also be suppressed.

さらに、請求項３のポペットバルブ圧入構造では、弁体を圧入部分に圧入した際には、テーパ部の縮径側に位置する前記弁体の先端が作動軸に設けられた突き当て部に当接することで、前記弁体の軸方向への移動を規制し、当該弁体を位置決めすることができる。   Furthermore, in the poppet valve press-fitting structure according to claim 3, when the valve body is press-fitted into the press-fitted portion, the tip of the valve body located on the diameter-reduced side of the tapered portion abuts against the abutting portion provided on the operating shaft. By contact, the movement of the valve body in the axial direction can be restricted and the valve body can be positioned.

これにより、突出部が位置する弁体の圧入部と、通流口の開口縁部に当接する弁体周面のシール部との位置関係を、所定の位置に位置決めすることができる。   Thereby, the positional relationship between the press-fitting portion of the valve body where the protruding portion is located and the seal portion of the valve body peripheral surface that is in contact with the opening edge portion of the flow port can be positioned at a predetermined position.

本発明の一の実施の形態を示す説明図である。It is explanatory drawing which shows one embodiment of this invention. 同実施の形態の効果を示す説明図である。It is explanatory drawing which shows the effect of the same embodiment. 従来例の電磁弁を示す断面図である。It is sectional drawing which shows the solenoid valve of a prior art example.

以下、本発明の一実施の形態を図面に従って説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は、本実施の形態にかかるポペットバルブ圧入構造を備えた比例電磁弁１を示す図であり、該比例電磁弁１は、主に内燃機関の燃料供給系統で使用され、燃料の流量を制御するものである。   FIG. 1 is a diagram showing a proportional solenoid valve 1 having a poppet valve press-fitting structure according to the present embodiment. The proportional solenoid valve 1 is mainly used in a fuel supply system of an internal combustion engine, and controls the flow rate of fuel. It is something to control.

この比例電磁弁１は、金属製円筒状のカバー１１を備えており、該カバー１１は、図中右方側の先端側へ向けて開口した容器状に形成されている。該カバー１１の基端面１２には、凸部１３が膨出形成されており、当該カバー１１は前記凸部１３が構成する小径部１４と大径部１５とによって構成されている。該大径部１５には、ボビン１６にコイル１７が巻回されてなるソレノイド１８が内嵌されており、該ソレノイド１８の先端側には、中間部材１９及び抜け止め部材２１が配設されている。該抜け止め部材２１は、前記カバー１１にカシメ構造等で固定されており、前記ソレノイド１８等の内蔵部品の不用意な離脱を防止できるように構成されている。   The proportional solenoid valve 1 includes a metal cylindrical cover 11, and the cover 11 is formed in a container shape that opens toward the distal end on the right side in the figure. A convex portion 13 is formed to bulge on the base end surface 12 of the cover 11, and the cover 11 is composed of a small diameter portion 14 and a large diameter portion 15 that are formed by the convex portion 13. A solenoid 18 formed by winding a coil 17 around a bobbin 16 is fitted into the large-diameter portion 15, and an intermediate member 19 and a retaining member 21 are disposed on the distal end side of the solenoid 18. Yes. The retaining member 21 is fixed to the cover 11 with a caulking structure or the like, and is configured to prevent inadvertent removal of built-in components such as the solenoid 18.

前記ソレノイド１８の基端側には、当該ソレノイド１８で励磁されるコア３２が内嵌されており、該コア３２は、その基端部が前記小径部１４に内嵌した状態で前記カバー１１に固定されている。また、前記ソレノイド１８の先端側には、ヨーク３１の一部が内嵌されており、当該ヨーク３１の端部は、前記コア３２から離間するとともに当該コア３２に対向して配置されている。該ヨーク３１の他端部は、前記抜け止め部材２１に内嵌しており、該抜け止め部材２１を介して前記カバー１１に磁気的に接続されている。このヨーク３１には、ノズル部材３３の基端部３４が内嵌された状態で固定されている。   A core 32 excited by the solenoid 18 is fitted into the base end side of the solenoid 18, and the core 32 is attached to the cover 11 in a state where the base end portion is fitted into the small diameter portion 14. It is fixed. Further, a part of the yoke 31 is fitted into the front end side of the solenoid 18, and the end portion of the yoke 31 is disposed away from the core 32 and opposed to the core 32. The other end of the yoke 31 is fitted into the retaining member 21 and is magnetically connected to the cover 11 via the retaining member 21. The base end portion 34 of the nozzle member 33 is fixed to the yoke 31 in a state of being fitted inside.

前記コア３２と前記ヨーク３１との間には、プランジャー４１が軸方向へ移動自在に収容されており、該プランジャー４１には、作動軸４２が挿通した状態で固定されている。前記プランジャー４１より基端側へ延出した前記作動軸４２は、第一軸受け４３を介して前記コア３２に移動自在に支持されており、前記プランジャー４１より先端側へ延出した前記作動軸４２は、第二軸受け４４を介して、前記ノズル部材３３の前記基端部３４に移動自在に支持されている。   A plunger 41 is accommodated between the core 32 and the yoke 31 so as to be movable in the axial direction, and is fixed to the plunger 41 with an operating shaft 42 inserted therethrough. The operating shaft 42 extending from the plunger 41 toward the base end side is supported by the core 32 via a first bearing 43 so as to be movable, and the operation extending from the plunger 41 toward the distal end side. The shaft 42 is movably supported by the base end portion 34 of the nozzle member 33 via a second bearing 44.

このノズル部材３３は、前記基端部３４より先端側に大径の鍔部５１が形成されており、該鍔部５１の先端側には、油圧回路等に挿入される小径のノズル部５２が形成されている。当該ノズル部材３３には、長さ方向に貫通する貫通穴５３が設けられており、該貫通穴５３の中途部には、内側へ突出したリング部５４によって縮径部分が形成されている。これにより、前記貫通穴５３は、前記リング部５４より基端側の基端側弁室５５と、先端側の先端側弁室５６とが形成されており、前記基端側弁室５５は、出力ポート５７を介して外部へ連通している。   The nozzle member 33 has a large-diameter flange 51 formed on the distal end side of the base end portion 34, and a small-diameter nozzle portion 52 inserted into a hydraulic circuit or the like is provided on the distal end side of the flange 51. Is formed. The nozzle member 33 is provided with a through hole 53 penetrating in the length direction, and a reduced diameter portion is formed in the middle portion of the through hole 53 by a ring portion 54 protruding inward. As a result, the through-hole 53 is formed with a proximal valve chamber 55 on the proximal side from the ring portion 54 and a distal valve chamber 56 on the distal side, and the proximal valve chamber 55 is The output port 57 communicates with the outside.

前記リング部５４で包囲された通流口６１は、その内径寸法が先端側から基端側へ向かうに従って縮径するように構成されており、当該リング部５４には、すり鉢状の傾斜面６２が形成されている。該傾斜面６２の基端側には、中心軸と平行な内面を有する平行穴６３が設けられており、該平行穴６３と前記傾斜面６２との交差部分は、当該通流口６１の開口縁部を構成するとともに、弁体が離着座する弁座部６４を構成している。   The through-flow port 61 surrounded by the ring portion 54 is configured such that the inner diameter thereof decreases in diameter from the distal end side toward the proximal end side, and the ring portion 54 includes a mortar-shaped inclined surface 62. Is formed. A parallel hole 63 having an inner surface parallel to the central axis is provided on the base end side of the inclined surface 62, and the intersection of the parallel hole 63 and the inclined surface 62 is an opening of the flow port 61. While constituting an edge portion, a valve seat portion 64 on which a valve body is seated is formed.

一方、前記作動軸４２の先端部には、小径の圧入ピン７１が一体形成されており、該圧入ピン７１は、前記通流口６１を挿通する長さに設定されている。前記圧入ピン７１の基端側の部位には、側方へ突出した突き当て部７２が一体形成されており、該突き当て部７２より先端側には、側方へ突出した基端側突出部７３が形成されている。該基端側突出部よりさらに先端側には、側方へ突出した先端側突出部７４が前記基端側突出部７３から離間して配設されている。   On the other hand, a small-diameter press-fit pin 71 is integrally formed at the distal end portion of the operating shaft 42, and the press-fit pin 71 is set to have a length for inserting the flow passage 61. An abutting portion 72 projecting sideways is integrally formed at a base end side portion of the press-fit pin 71, and a proximal end projecting portion projecting sideways is formed on the distal end side of the abutting portion 72. 73 is formed. A distal-side projecting portion 74 projecting sideways is disposed away from the proximal-side projecting portion 73 further on the distal end side than the proximal-side projecting portion.

この圧入ピン７１には、金属製のポペットバルブ８１が先端側から圧入された状態で固定されている。該ポペットバルブ８１は、一端側から他端側へ向けて外形寸法が縮径する略テーパ状のテーパ部８２と、該テーパ部８２の基端に形成された円柱状の円柱部８３と、該円柱部８３の端面より先端側へ延出した小径円柱部８４とによって構成されており、当該ポペットバルブ８１には、前記圧入ピン７１が圧入される長さ方向に貫通した挿入穴８５が設けられている。この挿入穴８５で形成された前記テーパ部８２の端部には、円形リング状の一端面８６が形成されており、当該ポペットバルブ８１を前記圧入ピン７１に圧入した状態で、前記テーパ部８２の縮径側に位置する前記一端面８６が前記突き当て部７２に当接して当該ポペットバルブ８１の前記圧入ピン７１での軸方向への挿入位置が規制されるように構成されている。   A metal poppet valve 81 is fixed to the press-fit pin 71 in a state of being press-fitted from the distal end side. The poppet valve 81 includes a substantially tapered portion 82 whose outer diameter is reduced from one end side to the other end side, a columnar cylindrical portion 83 formed at the base end of the tapered portion 82, and The poppet valve 81 is provided with an insertion hole 85 penetrating in the length direction in which the press-fit pin 71 is press-fitted. ing. A circular ring-shaped one end face 86 is formed at the end of the tapered portion 82 formed by the insertion hole 85, and the tapered portion 82 is in a state where the poppet valve 81 is press-fitted into the press-fit pin 71. The one end face 86 located on the diameter-reducing side is in contact with the abutting portion 72 so that the insertion position of the poppet valve 81 in the axial direction at the press-fit pin 71 is restricted.

また、前記挿入穴８５の内径寸法は、前記圧入ピン７１の外形寸法とほぼ同寸法に設定されており、前記ポペットバルブ８１を前記圧入ピン７１に圧入した圧入状態では、前記各突出部７３，７４が前記挿入穴８５の内側面に圧接されるように構成されている。   The inner diameter of the insertion hole 85 is set to be substantially the same as the outer dimension of the press-fit pin 71. In the press-fitted state where the poppet valve 81 is press-fitted into the press-fit pin 71, the protrusions 73, 74 is configured to be pressed against the inner surface of the insertion hole 85.

前記圧入状態において、図２にも示したように、前記弁座部６４に当接する前記ポペットバルブ８１周面のシール部９１と、前記基端側突出部７３が位置する前記基端側圧入部９２とは、前記作動軸４２の軸方向にて異なる位置に設定されており、前記ポペットバルブ８１周面から前記挿入穴８５までの肉厚が、前記シール部９１での肉厚より前記基端側圧入部９２での肉厚が厚肉となるように設定されている。また、前記圧入状態において、前記ポペットバルブ８１周面から前記挿入穴８５までの肉厚が、前記シール部９１での肉厚より、前記先端側突出部７４が位置する前記先端側圧入部９３での肉厚が厚肉となるように設定されている。そして、前記シール部９１での肉厚より肉厚の大きな方向、すなわち図中右側に前記基端側及び先端側突出部７３，７４が設けられている。   In the press-fitted state, as shown in FIG. 2, the proximal-side press-fit portion 92 where the seal portion 91 on the peripheral surface of the poppet valve 81 contacting the valve seat portion 64 and the proximal-side protruding portion 73 are located. Is set at a different position in the axial direction of the operating shaft 42, and the thickness from the peripheral surface of the poppet valve 81 to the insertion hole 85 is greater than the thickness at the seal portion 91. The thickness at the insertion portion 92 is set to be thick. Further, in the press-fitted state, the thickness from the peripheral surface of the poppet valve 81 to the insertion hole 85 is larger than the thickness at the seal portion 91 at the tip-side press-fit portion 93 where the tip-side protrusion 74 is located. The wall thickness is set to be thick. And the base end side and the front end side protrusion parts 73 and 74 are provided in the direction where thickness is larger than the thickness in the said seal part 91, ie, the right side in the figure.

前記圧入状態において、前記テーパ部８２の縮径側に位置する前記一端面８６から前記弁座部６４に当接する前記シール部９１までの軸方向での離間距離Ｒ１より、前記一端面８６から前記基端側圧入部９２までの軸方向での基端側圧入代Ｒ２が長くなるように設定されており、前記一端面８６から前記先端側圧入部９３までの軸方向での先端側圧入代Ｒ３がさらに長くなるように設定されている。   In the press-fitted state, a distance R1 in the axial direction from the one end face 86 located on the reduced diameter side of the taper part 82 to the seal part 91 in contact with the valve seat part 64, and from the one end face 86 to the The proximal-side press-fitting allowance R2 in the axial direction to the proximal-end press-fit portion 92 is set to be long, and the distal-end press-fit allowance R3 in the axial direction from the one end face 86 to the distal-end press-fit portion 93 is further increased. It is set to be long.

そして、前記ポペットバルブ８１の前記小径円柱部８４の外周部には、コイルスプリング１０１が設けられており、該コイルスプリング１０１の一端は、前記テーパ部８２の端面に当接している。このコイルスプリング１０１は、前記貫通穴５３が構成する入力ポート１０２に固定された抜け止め１０３と前記ポペットバルブ８１との間に弾持されており（図１参照）、当該コイルスプリング１０１によって前記作動軸４２は、基端側へ付勢されている。   A coil spring 101 is provided on the outer peripheral portion of the small diameter cylindrical portion 84 of the poppet valve 81, and one end of the coil spring 101 is in contact with the end surface of the tapered portion 82. The coil spring 101 is elastically supported between a stopper 103 fixed to the input port 102 formed by the through hole 53 and the poppet valve 81 (see FIG. 1), and the coil spring 101 operates the operation. The shaft 42 is biased toward the proximal end side.

これにより、前記ソレノイド１８への通電を遮断した非通電時には、前記コイルスプリング１０１の付勢力によって前記作動軸４２に設けられた前記ポペットバルブ８１が基端側に付勢され、前記シール部９１が前記弁座部６４に密着して前記通流口６１を閉鎖した閉弁状態１１１を形成できるように構成されており、前記入力ポート１０２から前記出力ポート５７へのオイルの通流を阻止できるように構成されている。   As a result, when the energization of the solenoid 18 is interrupted, the poppet valve 81 provided on the operating shaft 42 is urged toward the proximal end by the urging force of the coil spring 101, and the seal portion 91 is It is configured to be able to form a closed valve state 111 in close contact with the valve seat portion 64 and closing the flow port 61 so that oil flow from the input port 102 to the output port 57 can be prevented. It is configured.

また、前記ソレノイド１８に加えられる電流が制御された制御時には、前記作動軸４２に設けられた前記ポペットバルブ８１の先端側への移動量を制御することで、前記弁座部６４と前記シール部９１間に形成される間隙面積を調整できるように構成されており、これにより前記入力ポート１０２から前記出力ポート５７へのオイルの通流を制御する制御状態１２１を形成できるように構成されている。   When the current applied to the solenoid 18 is controlled, the valve seat portion 64 and the seal portion are controlled by controlling the amount of movement of the poppet valve 81 provided on the operating shaft 42 toward the distal end side. 91 is configured such that a gap area formed between the two ports 91 can be adjusted, whereby a control state 121 for controlling the flow of oil from the input port 102 to the output port 57 can be formed. .

以上の構成にかかる本実施の形態において、ポペットバルブ８１の挿入穴８５に作動軸４２の圧入部分である圧入ピン７１を圧入する際には、該圧入ピン７１に突設された各突出部７３，７４が前記ポペットバルブ８１の前記挿入穴８５を押し広げながら移動する。   In the present embodiment having the above-described configuration, when the press-fit pin 71 which is the press-fit portion of the operating shaft 42 is press-fitted into the insertion hole 85 of the poppet valve 81, each protrusion 73 projecting from the press-fit pin 71 is provided. , 74 move while expanding the insertion hole 85 of the poppet valve 81.

そして、前記ポペットバルブ８１に前記圧入ピン７１を圧入した圧入状態においては、該圧入ピン７１に突設された各突出部７３，７４が位置する前記ポペットバルブ８１の各圧入部９２，９３は、当該ポペットバルブ８１が開閉する通流口６１の開口縁部が構成する弁座部６４に当接する当該ポペットバルブ８１周面のシール部９１と異なる位置に設定されている。   In the press-fitted state in which the press-fit pin 71 is press-fitted into the poppet valve 81, the press-fit portions 92 and 93 of the poppet valve 81 where the projecting portions 73 and 74 projecting from the press-fit pin 71 are located are: The poppet valve 81 is set at a position different from the seal portion 91 on the peripheral surface of the poppet valve 81 that abuts the valve seat portion 64 formed by the opening edge portion of the flow opening 61 that opens and closes.

このため、図２中左方に示したように、前記各圧入部９２，９３と前記シール部９１とが前記作動軸４２の軸方向で同位置に設定され、前記シール部９１の真下に前記基端側突出部７３が配置される場合と比較して、前記ポペットバルブ８１の前記挿入穴８５の壁面を外側に押圧する前記基端側突出部７３に起因した前記シール部９１の変形を抑制することができる。   For this reason, as shown on the left side in FIG. 2, the press-fit portions 92 and 93 and the seal portion 91 are set at the same position in the axial direction of the operation shaft 42, and the seal portion 91 is directly below the seal portion 91. Compared with the case where the base end side protruding portion 73 is arranged, the deformation of the seal portion 91 due to the base end side protruding portion 73 pressing the wall surface of the insertion hole 85 of the poppet valve 81 outward is suppressed. can do.

また、前記ポペットバルブ８１の周面から前記挿入穴８５までの肉厚は、前記シール部９１での肉厚より前記基端側圧入部９２での肉厚が厚肉となるように設定されている。   Further, the thickness from the peripheral surface of the poppet valve 81 to the insertion hole 85 is set so that the thickness at the proximal end press-fitting portion 92 is thicker than the thickness at the seal portion 91. .

このため、前記ポペットバルブ８１の前記挿入穴８５の壁面を外側に押圧する前記基端側突出部７３が薄肉部分に形成される場合と比較して、前記押圧による変形の吸収代が大きくなり、当該ポペットバルブ８１周面への影響を抑えることができる。   For this reason, as compared with the case where the base end side protruding portion 73 that presses the wall surface of the insertion hole 85 of the poppet valve 81 is formed in a thin portion, an absorption margin of deformation due to the pressing is increased. The influence on the peripheral surface of the poppet valve 81 can be suppressed.

さらに、前記ポペットバルブ８１のテーパ部８２の縮径側に位置する一端面８６から前記基端側圧入部９２までの軸方向での基端側圧入代Ｒ２を、前記一端面８６から前記シール部９１までの軸方向での離間距離Ｒ１より、十分に長く設定したので、前記基端側突出部７３通過時に生じ得る変形の復元を可能とするとともに、前記基端側圧入部９２にて前記ポペットバルブ８１周面で生じた変形の前記シール部９１への影響を防止することができる。   Further, the base end side press-fitting allowance R2 in the axial direction from the one end face 86 positioned on the reduced diameter side of the taper portion 82 of the poppet valve 81 to the base end side press-fit portion 92 is changed from the one end face 86 to the seal portion 91. Is set to be sufficiently longer than the axial separation distance R1 until the base end side protruding portion 73 can be restored, and at the base end side press fitting portion 92, the poppet valve 81 can be restored. The influence which the deformation | transformation which arose on the surrounding surface has on the said seal part 91 can be prevented.

これらにより、前記ポペットバルブ８１周面の前記シール部９１での変形を抑えることができ、当該シール部９１での真円度の精度の確保が容易となり、前記ポペットバルブ８１で開閉する前記通流口６１でのリーク性能を向上することができる。   As a result, deformation of the peripheral surface of the poppet valve 81 at the seal portion 91 can be suppressed, and the accuracy of roundness at the seal portion 91 can be easily ensured, and the flow opening and closing by the poppet valve 81 is facilitated. The leak performance at the mouth 61 can be improved.

また、前記各突出部７３，７４は、ポペットバルブ８１において肉厚の大きな先端側に複数設けられており、これら突出部７３，７４による当該ポペットバルブ８１の不用意な抜け防止効果を高めることができるとともに、前記ポペットバルブ８１周面への影響も抑制することができる。   Further, a plurality of the projecting portions 73 and 74 are provided on the leading end side of the poppet valve 81 having a large thickness, and the effect of preventing the poppet valve 81 from being carelessly removed by the projecting portions 73 and 74 is enhanced. In addition, the influence on the peripheral surface of the poppet valve 81 can be suppressed.

さらに、前記ポペットバルブ８１を前記圧入ピン７１に圧入した際には、前記ポペットバルブ８１のテーパ部８２の縮径側に位置する前記ポペットバルブ８１の一端が作動軸４２に設けられた突き当て部７２に当接することで、前記ポペットバルブ８１の軸方向への移動を規制し、当該ポペットバルブ８１を位置決めすることができる。   Further, when the poppet valve 81 is press-fitted into the press-fit pin 71, the abutment portion in which one end of the poppet valve 81 located on the reduced diameter side of the tapered portion 82 of the poppet valve 81 is provided on the operating shaft 42. By abutting on 72, the movement of the poppet valve 81 in the axial direction is restricted, and the poppet valve 81 can be positioned.

これにより、前記各突出部７３，７４が位置するポペットバルブ８１の各圧入部９２，９３と、前記通流口６１の弁座部６４に当接するポペットバルブ８１周面の前記シール部９１との位置関係を一定位置に保つことができる。   Thereby, each press-fit part 92 and 93 of the poppet valve 81 in which each said protrusion part 73 and 74 is located, and the said seal part 91 of the poppet valve 81 peripheral surface contact | abutted to the valve seat part 64 of the said flow port 61. The positional relationship can be maintained at a fixed position.

なお、本実施の形態では、内燃機関の燃料供給系統における燃料の流量制御用に前記比例電磁弁１を用いた場合を例に挙げて説明したが、これに限定されるものではなく、例えば油圧回路の流量制御に用いる流量制御用の比例電磁弁１として用いても良い。   In the present embodiment, the case where the proportional solenoid valve 1 is used for controlling the flow rate of the fuel in the fuel supply system of the internal combustion engine has been described as an example. However, the present invention is not limited to this. You may use as the proportional solenoid valve 1 for flow control used for the flow control of a circuit.

１ 比例電磁弁
４２ 作動軸
６１ 通流口
６４ 弁座部
７１ 圧入ピン
７２ 突き当て部
７３ 基端側突出部
７４ 先端側突出部
８１ ポペットバルブ
８２ テーパ部
８５ 挿入穴
９１ シール部
９２ 基端側圧入部
９３ 先端側圧入部
１１１ 閉弁状体
１２１ 制御状態 DESCRIPTION OF SYMBOLS 1 Proportional solenoid valve 42 Actuation shaft 61 Flow port 64 Valve seat part 71 Press-fit pin 72 Butting part 73 Base end side protrusion part 74 Front end side protrusion part 81 Poppet valve 82 Taper part 85 Insertion hole 91 Seal part 92 Base end side press injection part 93 Tip side press-fitting part 111 Valve-closing body 121 Control state

Claims (3)

作動軸に設けられた弁体に、一端側から他端側へ向けて外形寸法が縮径する略テーパ状のテーパ部が設けられ、前記弁体の周面を通流口の開口縁部に当接して前記通流口を閉鎖した閉鎖状態と、前記作動軸を軸方向へ移動して前記開口縁部及び前記弁体間の間隙を変化して通流量を制御する制御状態とを形成する比例電磁弁におけるポペットバルブ圧入構造であって、前記弁体の挿入穴に圧入される前記作動軸の圧入部分に外側に突出した突出部が形成されたポペットバルブ圧入構造において、
前記圧入部分に前記弁体を圧入した状態で、前記開口縁部に当接する前記弁体周面のシール部と、前記突出部が位置する圧入部とを前記作動軸の軸方向にて異なる位置に設定するとともに、前記弁体の周面から前記挿入穴までの肉厚が、前記シール部での肉厚より前記圧入部での肉厚が厚肉となるように設定したことを特徴とするポペットバルブ圧入構造。 The valve body provided on the operating shaft is provided with a substantially tapered taper portion whose outer dimension is reduced from one end side to the other end side, and the peripheral surface of the valve body is provided at the opening edge of the flow opening. A closed state in which the flow port is closed by contact and a control state in which the operating shaft is moved in the axial direction to change the gap between the opening edge and the valve body to control the flow rate are formed. In a poppet valve press-fitting structure in a proportional solenoid valve, a poppet valve press-fitting structure in which a protruding portion protruding outward is formed at a press-fitting portion of the operating shaft that is press-fitted into an insertion hole of the valve body.
In a state in which the valve body is press-fitted into the press-fitted portion, the seal portion of the valve body peripheral surface that abuts on the opening edge and the press-fit portion where the protruding portion is located are different in the axial direction of the operating shaft. And the thickness from the peripheral surface of the valve body to the insertion hole is set such that the thickness at the press-fit portion is thicker than the thickness at the seal portion. Poppet valve press-fit structure. 前記シール部での肉厚より肉厚の大きな方向に前記突出部を複数設けたことを特徴とする請求項１記載のポペットバルブ圧入構造。   The poppet valve press-fitting structure according to claim 1, wherein a plurality of the protruding portions are provided in a direction in which the thickness is larger than the thickness at the seal portion. 前記テーパ部の縮径側に位置する前記弁体の先端が当接し、当該弁体の軸方向の移動を規制する突き当て部を前記作動軸に設けたことを特徴とする請求項１又は２記載のポペットバルブ圧入構造。   The tip of the said valve body located in the diameter reduction side of the said taper part contact | abuts, and the abutting part which controls the movement of the axial direction of the said valve body was provided in the said operating shaft, The 1st or 2 characterized by the above-mentioned. The poppet valve press-fit structure described.
JP2012096133A 2012-04-20 2012-04-20 Poppet valve press-fit structure Expired - Fee Related JP5976372B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015200334A (en) * 2014-04-04 2015-11-12 株式会社三栄水栓製作所 check valve
JP2019113097A (en) * 2017-12-22 2019-07-11 日本電産サンキョー株式会社 Flow control device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501407A (en) * 1982-08-11 1985-02-26 Industrial Electronic Rubber Company Solenoid actuated fluid control valve
JPH07103614A (en) * 1993-09-27 1995-04-18 Emerson Electric Co Valve structure for fluid flow
JPH11280606A (en) * 1998-03-31 1999-10-15 Denso Corp Fuel injection nozzle
JP2005030586A (en) * 2003-07-07 2005-02-03 Lg Electron Inc Electromagnetic fluid control valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501407A (en) * 1982-08-11 1985-02-26 Industrial Electronic Rubber Company Solenoid actuated fluid control valve
JPH07103614A (en) * 1993-09-27 1995-04-18 Emerson Electric Co Valve structure for fluid flow
JPH11280606A (en) * 1998-03-31 1999-10-15 Denso Corp Fuel injection nozzle
JP2005030586A (en) * 2003-07-07 2005-02-03 Lg Electron Inc Electromagnetic fluid control valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015200334A (en) * 2014-04-04 2015-11-12 株式会社三栄水栓製作所 check valve
JP2019113097A (en) * 2017-12-22 2019-07-11 日本電産サンキョー株式会社 Flow control device

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