JP2017089858A - Press-fitting member - Google Patents

Press-fitting member Download PDF

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Publication number
JP2017089858A
JP2017089858A JP2015224750A JP2015224750A JP2017089858A JP 2017089858 A JP2017089858 A JP 2017089858A JP 2015224750 A JP2015224750 A JP 2015224750A JP 2015224750 A JP2015224750 A JP 2015224750A JP 2017089858 A JP2017089858 A JP 2017089858A
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press
flow path
main body
fluid
fitted
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長坂　良一
Ryoichi Nagasaka
良一 長坂
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KYB Corp
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KYB Corp
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Priority to JP2015224750A priority Critical patent/JP2017089858A/en
Priority to PCT/JP2016/077688 priority patent/WO2017086017A1/en
Publication of JP2017089858A publication Critical patent/JP2017089858A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a foreign matter that is generated when a press-fitting member is press-fitted from contaminating into fluid.SOLUTION: A check valve 10 provided in a flow passage 2 of a fluid device 1 includes: a body part 21 press-fitted into the flow passage 2 of the fluid device 1; a small diameter part 22 positioned on a side of a press-fitting direction relative to the body part 21 and formed, of which diameter is formed smaller than the body part 21; and a groove 23 provided between the body part 21 and the small diameter part 22 and formed in a circumferential direction.SELECTED DRAWING: Figure 1

Description

本発明は、流体機器の流路に設けられる圧入部材に関するものである。   The present invention relates to a press-fitting member provided in a flow path of a fluid device.

特許文献１には、シリンダヘッドに流出弁が設けられた高圧ポンプが記載されている。この流出弁は、シリンダヘッドの流出孔内にばねホルダを圧入することで固定される。   Patent Document 1 describes a high-pressure pump having a cylinder head provided with an outflow valve. This outflow valve is fixed by press-fitting a spring holder into the outflow hole of the cylinder head.

特表２００８−５４０９３４号公報Special table 2008-540934 gazette

特許文献１に記載の高圧ポンプでは、ばねホルダを流出孔に圧入する際に、ばねホルダの先端部分が流出孔の内壁を削って異物が発生することがある。このような異物が流路内の流体に混入すると、異物が流体とともに流れて流体回路を構成する流体機器のシール部や摺動部に入り込んでしまい、シール部や摺動部においてシール不良や摩耗が発生するおそれがある。   In the high-pressure pump described in Patent Document 1, when the spring holder is press-fitted into the outflow hole, the tip of the spring holder may scrape the inner wall of the outflow hole to generate foreign matter. When such foreign matter is mixed into the fluid in the flow path, the foreign matter flows with the fluid and enters the seal portion or sliding portion of the fluid equipment that constitutes the fluid circuit, resulting in poor sealing or wear at the seal portion or sliding portion. May occur.

本発明は、上記の問題点に鑑みてなされたものであり、圧入部材を圧入した際に発生する異物の流体への混入を防止することを目的とする。   The present invention has been made in view of the above-described problems, and an object of the present invention is to prevent foreign matters generated when a press-fitting member is press-fitted into a fluid.

第１発明は、流体機器の流路に設けられる圧入部材であって、流体機器の流路に圧入される本体部と、本体部よりも圧入方向側に位置し本体部よりも小径に形成される小径部と、本体部と小径部の間に設けられ周方向に形成される溝と、を備えることを特徴とする。   A first invention is a press-fitting member provided in a flow channel of a fluid device, and is formed with a main body portion press-fitted into the flow channel of the fluid device, and positioned closer to the press-fitting direction than the main body portion and having a smaller diameter than the main body portion. And a groove provided between the main body portion and the small diameter portion and formed in the circumferential direction.

第１の発明では、圧入部材の本体部を圧入する際に発生した異物は、本体部と小径部の間に設けられた溝内に捕捉される。   In the first invention, the foreign matter generated when the main body portion of the press-fitting member is press-fitted is captured in a groove provided between the main body portion and the small diameter portion.

第２の発明は、溝は、本体部を流路に圧入させる際に発生する異物を捕捉するためのものであることを特徴とする。   According to a second aspect of the present invention, the groove is for capturing a foreign matter generated when the main body is press-fitted into the flow path.

本発明によれば、圧入部材を圧入した際に発生する異物の流路中の流体への混入を防止できる。   ADVANTAGE OF THE INVENTION According to this invention, mixing with the fluid in the flow path of the foreign material which generate | occur | produces when a press-fit member is press-fit can be prevented.

本発明の実施形態に係る圧入部材の断面図である。It is sectional drawing of the press fit member which concerns on embodiment of this invention. 本発明の実施形態に係る圧入部材の溝付近の拡大図である。It is an enlarged view near the groove | channel of the press-fit member which concerns on embodiment of this invention.

以下、図面を参照して、本発明の実施形態に係る圧入部材について説明する。   Hereinafter, a press-fitting member according to an embodiment of the present invention will be described with reference to the drawings.

圧入部材は、流体機器の流路に設けられる。本実施形態では、流体機器がポンプ１であり、圧入部材がチェック弁１０である場合について説明する。   The press-fitting member is provided in the flow path of the fluid device. In the present embodiment, a case where the fluid device is the pump 1 and the press-fitting member is the check valve 10 will be described.

図１は、ポンプ１に形成された流路２に設けられるチェック弁１０を示している。チェック弁１０は、カートリッジ式のチェック弁である。   FIG. 1 shows a check valve 10 provided in a flow path 2 formed in the pump 1. The check valve 10 is a cartridge type check valve.

図１に示すように、チェック弁１０は、流路２に固定され内部に貫通路２４が形成されたハウジング２０と、貫通路２４の段差部２５に形成された弁座２６に対して着座又は離間する球状の弁体３０と、弁体３０を弁座２６に向かって付勢する付勢ばね４０と、貫通路２４の一端に固定され付勢ばね４０の端部を支持するばね受５０と、を備える。チェック弁１０は、ハウジング２０に弁体３０、付勢ばね４０、及びばね受５０を組み付けた後、流路２の開口２ｂから流路２内に圧入される。   As shown in FIG. 1, the check valve 10 is seated on a housing 20 fixed to the flow path 2 and having a through passage 24 formed therein, and a valve seat 26 formed in a step portion 25 of the through passage 24. A spherical valve body 30 that is spaced apart, a biasing spring 40 that biases the valve body 30 toward the valve seat 26, and a spring receiver 50 that is fixed to one end of the through passage 24 and supports the end of the biasing spring 40. . The check valve 10 is press-fitted into the flow path 2 from the opening 2 b of the flow path 2 after assembling the valve body 30, the urging spring 40, and the spring receiver 50 to the housing 20.

このように構成されたチェック弁１０の機能について説明する。   The function of the check valve 10 thus configured will be described.

図１における左側から流体が流路２内を流れてくると、チェック弁１０の貫通路２４内に流体が流入する。そして、流体の圧力が弁体３０に作用すると、弁体３０は付勢ばね４０の付勢力に抗して弁座２６から離間する。これにより、流体はチェック弁１０を通過して、チェック弁１０の下流側へと流れていく。これに対して、図１における右側から流体が流路２内を流れてくると、ばね受５０側から貫通路２４内に流体が流入する。このとき、弁体３０は付勢ばね４０の付勢力によって弁座２６に着座している。このため、流体はチェック弁１０を通過することができない。つまり、チェック弁１０は、図１における右側からの流体の流れに対してチェック機能を果たすことになる。このように、チェック弁１０は、流路２内の流体の一方向の流れのみを許容するものである。   When the fluid flows in the flow path 2 from the left side in FIG. 1, the fluid flows into the through passage 24 of the check valve 10. When the fluid pressure acts on the valve body 30, the valve body 30 moves away from the valve seat 26 against the biasing force of the biasing spring 40. As a result, the fluid passes through the check valve 10 and flows to the downstream side of the check valve 10. On the other hand, when the fluid flows in the flow path 2 from the right side in FIG. 1, the fluid flows into the through passage 24 from the spring receiver 50 side. At this time, the valve body 30 is seated on the valve seat 26 by the biasing force of the biasing spring 40. For this reason, the fluid cannot pass through the check valve 10. That is, the check valve 10 performs a check function on the fluid flow from the right side in FIG. As described above, the check valve 10 allows only the flow in one direction of the fluid in the flow path 2.

次に、チェック弁１０のハウジング２０の具体的な構成について説明する。   Next, a specific configuration of the housing 20 of the check valve 10 will be described.

図１及び図２に示すように、ハウジング２０は、流路２に圧入される本体部２１と、本体部２１よりも圧入方向側に位置し本体部２１よりも小径に形成される小径部２２と、本体部２１と小径部２２の間に設けられ周方向に形成される環状の溝２３と、を備える。本体部２１と小径部２２とは、一体のものとして連続的に形成される。本体部２１は、流路２の内周面２ａの径よりもわずかに大きな径を有し、小径部２２は、流路２の内周面２ａよりも小さな径を有する。これにより、流路２の内周面２ａと小径部２２との間には、隙間Ｃが存在する。なお、小径部２２は、流路２の内周面２ａと略同じ径であってもよい。この場合には、隙間Ｃは存在しないことになる。   As shown in FIGS. 1 and 2, the housing 20 includes a main body 21 that is press-fitted into the flow path 2, and a small-diameter portion 22 that is positioned on the press-fitting direction side of the main body 21 and has a smaller diameter than the main body 21. And an annular groove 23 provided between the main body portion 21 and the small diameter portion 22 and formed in the circumferential direction. The main body portion 21 and the small diameter portion 22 are continuously formed as an integrated body. The main body 21 has a diameter slightly larger than the diameter of the inner peripheral surface 2 a of the flow channel 2, and the small diameter portion 22 has a diameter smaller than that of the inner peripheral surface 2 a of the flow channel 2. Thereby, a gap C exists between the inner peripheral surface 2 a of the flow path 2 and the small diameter portion 22. The small diameter portion 22 may have a diameter substantially the same as the inner peripheral surface 2a of the flow path 2. In this case, the gap C does not exist.

次に、溝２３の機能について、図２を参照しながら具体的に説明する。図２は、溝２３付近の拡大図である。   Next, the function of the groove 23 will be specifically described with reference to FIG. FIG. 2 is an enlarged view of the vicinity of the groove 23.

チェック弁１０は、流路２の開口２ｂから図１、２に示す矢印の方向に圧入されることによって、流路２に固定される。具体的には、本体部２１が流路２の内周面２ａに圧入されることによって流路２の内周面２ａに固定される。   The check valve 10 is fixed to the flow path 2 by being press-fitted in the direction of the arrow shown in FIGS. Specifically, the main body portion 21 is fixed to the inner peripheral surface 2 a of the flow channel 2 by being press-fitted into the inner peripheral surface 2 a of the flow channel 2.

本体部２１を流路２の内周面２ａに圧入する際に、本体部２１の圧入方向の先端部２１Ａによって、流路２の内周面２ａが削られて異物６０が発生することがある。このような異物６０が流路２内の流体に混入してしまうと、異物６０が流体とともに流れて、例えば、弁体３０と弁座２６との間のシート部分に噛みこんでしまうおそれがある。異物６０がこのようなシート部分に噛みこんでしまうと、閉弁時に弁体３０と弁座２６との間に隙間ができてしまい、流体が漏れてしまい、チェック弁１０の機能が損なわれる。また、異物６０が、アクチュエータなどの摺動部分に入り込んでしまうと、摩耗や作動不良の原因となる。   When the main body 21 is press-fitted into the inner peripheral surface 2 a of the flow path 2, the inner peripheral surface 2 a of the flow path 2 may be scraped by the distal end portion 21 </ b> A in the press-fitting direction of the main body 21 to generate the foreign matter 60. . If such foreign matter 60 is mixed into the fluid in the flow path 2, the foreign matter 60 may flow along with the fluid and may be caught in the seat portion between the valve body 30 and the valve seat 26, for example. . If the foreign matter 60 is caught in such a seat portion, a gap is formed between the valve body 30 and the valve seat 26 when the valve is closed, fluid leaks, and the function of the check valve 10 is impaired. Further, if the foreign matter 60 enters a sliding portion such as an actuator, it causes wear and malfunction.

このため、チェック弁１０では、本体部２１と小径部２２の境界部分に溝２３が形成される。これにより、ハウジング２０を圧入した際に本体部２１の先端部２１Ａによって発生した異物６０は、溝２３内において捕捉される。これにより、異物６０が流路２内の流体に混入することを防止できる。   For this reason, in the check valve 10, a groove 23 is formed at the boundary portion between the main body 21 and the small diameter portion 22. As a result, the foreign matter 60 generated by the distal end portion 21 </ b> A of the main body portion 21 when the housing 20 is press-fitted is captured in the groove 23. Thereby, it can prevent that the foreign material 60 mixes in the fluid in the flow path 2.

また、小径部２２と流路２の内周面２ａとの間の隙間Ｃを所定の小さな隙間とすることで、溝２３内において捕捉された異物６０が隙間Ｃを通過しづらくなるので、異物６０が流路２へ流出することを防止できる。   In addition, since the gap C between the small diameter portion 22 and the inner peripheral surface 2a of the flow path 2 is a predetermined small gap, the foreign matter 60 captured in the groove 23 is difficult to pass through the gap C. 60 can be prevented from flowing out into the flow path 2.

小径部２２は、流路２の内周面２ａとの間に所定の隙間Ｃを有するように形成されるため、小径部２２と流路２の内周面２ａとが接することはない。したがって、小径部２２が流路２の内周面２ａを削ってしまうことはないため、溝２３よりも圧入方向側から異物が発生することはない。   Since the small-diameter portion 22 is formed so as to have a predetermined gap C between the small-diameter portion 22 and the inner peripheral surface 2 a of the flow channel 2, the small-diameter portion 22 and the inner peripheral surface 2 a of the flow channel 2 do not contact each other. Therefore, since the small diameter portion 22 does not scrape the inner peripheral surface 2a of the flow path 2, no foreign matter is generated from the press-fitting direction side of the groove 23.

以上の本実施形態によれば、以下の効果を奏する。   According to the above embodiment, the following effects are obtained.

チェック弁１０では、本体部２１と小径部２２の境界部分に溝２３が形成される。したがって、チェック弁１０のハウジング２０を圧入する際に発生した異物６０は溝２３内に捕捉される。これにより、異物６０が流路２内の流体に混入することを防止できる。   In the check valve 10, a groove 23 is formed at a boundary portion between the main body portion 21 and the small diameter portion 22. Therefore, the foreign matter 60 generated when the housing 20 of the check valve 10 is press-fitted is captured in the groove 23. Thereby, it can prevent that the foreign material 60 mixes in the fluid in the flow path 2.

チェック弁１０では、小径部２２と流路２の内周面２ａとの間の隙間Ｃを所定の小さな隙間が形成される。これにより、溝２３内に捕捉された異物６０は隙間Ｃを通過しづらいため、異物６０が流路２へ流出することを防止できる。   In the check valve 10, a predetermined small gap is formed as the gap C between the small diameter portion 22 and the inner peripheral surface 2 a of the flow path 2. Thereby, since the foreign material 60 captured in the groove 23 is difficult to pass through the gap C, the foreign material 60 can be prevented from flowing out into the flow path 2.

また、小径部２２はハウジング２０を圧入する際にガイドとして機能する。これにより、チェック弁１０を流路２に対して同軸に圧入することができる。   The small diameter portion 22 functions as a guide when the housing 20 is press-fitted. Thereby, the check valve 10 can be press-fitted coaxially with respect to the flow path 2.

以上のように構成された本発明の実施形態の構成、作用、及び効果をまとめて説明する。   The configuration, operation, and effect of the embodiment of the present invention configured as described above will be described together.

第１の発明は、流体機器（ポンプ１）の流路２に設けられた圧入部材（チェック弁１０）は、流体機器（ポンプ１）の流路２に圧入される本体部２１と、本体部２１よりも圧入方向側に位置し本体部２１よりも小径に形成される小径部２２と、本体部２１と小径部２２の間に設けられ周方向に形成される溝２３と、を備えることを特徴とする。   In the first invention, a press-fitting member (check valve 10) provided in a flow path 2 of a fluid device (pump 1) includes a main body portion 21 that is press-fitted into the flow path 2 of the fluid device (pump 1), and a main body portion. A small-diameter portion 22 that is positioned closer to the press-fitting direction than 21 and is formed with a smaller diameter than the main body portion 21, and a groove 23 that is provided between the main body portion 21 and the small-diameter portion 22 and is formed in the circumferential direction. Features.

この構成によれば、圧入部材（チェック弁１０）の本体部２１を圧入する際に発生した異物６０は、本体部２１と小径部２２の間に設けられた溝２３内に捕捉される。これにより、圧入部材（チェック弁１０）を圧入したときに発生する異物６０の流路２中の流体への混入を防止できる。   According to this configuration, the foreign matter 60 generated when the main body 21 of the press-fitting member (check valve 10) is press-fitted is captured in the groove 23 provided between the main body 21 and the small diameter portion 22. Thereby, mixing of the foreign matter 60 generated when the press-fitting member (check valve 10) is press-fitted into the fluid in the flow path 2 can be prevented.

第２の発明は、溝は、本体部２１を流路２に圧入させる際に発生する異物６０を捕捉するためのものであることを特徴とする。   The second invention is characterized in that the groove is for capturing the foreign matter 60 generated when the main body 21 is press-fitted into the flow path 2.

以上、本発明の実施形態について説明したが、上記実施形態は本発明の適用例の一部を示したに過ぎず、本発明の技術的範囲を上記実施形態の具体的構成に限定する趣旨ではない。   The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

本実施形態では、チェック弁１０を例にして説明したが、圧入部材は、各種バルブ、オリフィス、フィルタのハウジングや、管、継手などであってもよい。また、流体機器は、内部に流路を有するものであればよく、コンプレッサ、アクチュエータ、バルブ、管、あるいは、タンクなどであってもよい。   In this embodiment, the check valve 10 has been described as an example, but the press-fitting member may be various valves, orifices, filter housings, pipes, joints, and the like. Further, the fluid device may be any device having a flow path inside, and may be a compressor, an actuator, a valve, a pipe, a tank, or the like.

１・・・ポンプ（流体機器）、２・・・流路、１０・・・チェック弁（圧入部材）、２０・・・ハウジング、２１・・・本体部、２１Ａ・・・先端部、２２・・・小径部、２３・・・溝、２６・・・弁座、３０・・・弁体、４０・・・付勢ばね、５０・・・ばね座、６０・・・異物 DESCRIPTION OF SYMBOLS 1 ... Pump (fluid apparatus), 2 ... Flow path, 10 ... Check valve (press-fit member), 20 ... Housing, 21 ... Main-body part, 21A ... Tip part, 22. ..Small diameter part, 23 ... groove, 26 ... valve seat, 30 ... valve element, 40 ... biasing spring, 50 ... spring seat, 60 ... foreign matter

Claims (2)

流体機器の流路に設けられる圧入部材であって、
前記流体機器の前記流路に圧入される本体部と、
前記本体部よりも圧入方向側に位置し前記本体部よりも小径に形成される小径部と、
前記本体部と前記小径部の間に設けられ周方向に形成される溝と、を備えることを特徴とする圧入部材。 A press-fitting member provided in a flow path of a fluid device,
A main body portion press-fitted into the flow path of the fluidic device;
A small-diameter portion that is positioned closer to the press-fitting direction than the main body portion and is formed with a smaller diameter than the main body portion;
A press-fitting member comprising a groove provided between the main body portion and the small-diameter portion and formed in a circumferential direction. 前記溝は、前記本体部を前記流路に圧入させる際に発生する異物を捕捉するためのものであることを特徴とする請求項１に記載の圧入部材。   The press-fitting member according to claim 1, wherein the groove is for capturing a foreign matter generated when the main body is press-fitted into the flow path.
JP2015224750A 2015-11-17 2015-11-17 Press-fitting member Pending JP2017089858A (en)

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JP2015224750A JP2017089858A (en) 2015-11-17 2015-11-17 Press-fitting member
PCT/JP2016/077688 WO2017086017A1 (en) 2015-11-17 2016-09-20 Preess-fit member

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