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JP5579375B2 - Flare nut - Google Patents
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JP5579375B2 - Flare nut - Google Patents

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JP5579375B2
JP5579375B2 JP2008185771A JP2008185771A JP5579375B2 JP 5579375 B2 JP5579375 B2 JP 5579375B2 JP 2008185771 A JP2008185771 A JP 2008185771A JP 2008185771 A JP2008185771 A JP 2008185771A JP 5579375 B2 JP5579375 B2 JP 5579375B2
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nut
nut portion
flare
connector
hole
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JP2010025194A (en
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克英 小林
圭介 島田
佳哉 丸山
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Hino Motors Ltd
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Description

本発明は、配管をコネクタに接続するフレアナットに関するものである。   The present invention relates to a flare nut that connects piping to a connector.

一般に、車両に設置されるエアドライヤ本体等の対象物に、金属薄管等の配管を接続する際には、図５〜図７に示す如くフレアナット１を介して対象物のコネクタ２に配管３を接続している。   Generally, when connecting a pipe such as a thin metal pipe to an object such as an air dryer main body installed in a vehicle, the pipe 3 is connected to the connector 2 of the object via a flare nut 1 as shown in FIGS. Is connected.

コネクタ２は、対象物から突出するコネクタ本体４を備えており、コネクタ本体４の軸心部分にはエア等の流体を流す貫通孔５が形成され、コネクタ２の先端部には貫通孔５の端部を周回する傾斜当接面６が形成され、更にコネクタ本体４の外周にはネジ溝を切ったネジ部７が形成されている。   The connector 2 includes a connector body 4 that protrudes from an object. A through hole 5 through which a fluid such as air flows is formed in an axial center portion of the connector body 4, and a through hole 5 is formed at the tip of the connector 2. An inclined contact surface 6 that circulates around the end portion is formed, and a screw portion 7 having a thread groove is formed on the outer periphery of the connector body 4.

フレアナット１は、テーパ状のフレアナット本体８を備えており、フレアナット本体８の大径側の端部には六角のナット部９が備えられると共にフレアナット本体８の軸心部分には配管３を通す貫通孔１０が形成されている。フレアナット本体８の貫通孔１０は、ナット部９側（大径側）の内径を大きく形成すると共に他端側（小径側）の内径を小さく形成して中央位置に段差部１１を構成しており、ナット部９側の貫通孔１０の内周面には、コネクタ２に螺合し得るようにネジ溝のネジ部１２が形成されている。   The flare nut 1 is provided with a tapered flare nut main body 8, a hexagonal nut portion 9 is provided at an end of the flare nut main body 8 on the large diameter side, and a pipe is provided at the axial center portion of the flare nut main body 8. 3 is formed. The through hole 10 of the flare nut body 8 is formed with a large inner diameter on the nut portion 9 side (large diameter side) and a small inner diameter on the other end side (small diameter side) to form a step portion 11 at the center position. On the inner peripheral surface of the through hole 10 on the nut portion 9 side, a screw portion 12 of a screw groove is formed so as to be screwed into the connector 2.

配管３は、フレアナット１の貫通孔１０に通した後、ナット部９側に位置する先端が円錐状に広がる形状に成形されており、円錐状の先端部１３は、フレアナット１の貫通孔１０の段差部１１で支持されるようになっている。   The pipe 3 passes through the through hole 10 of the flare nut 1 and is then formed into a shape in which the tip located on the nut portion 9 side expands in a conical shape, and the conical tip portion 13 is formed in the through hole of the flare nut 1. 10 step portions 11 are supported.

配管３をコネクタ２に接続する際には、コネクタ２にフレアナット１を螺合して締結し、配管３の円錐状の先端部１３をコネクタ２の傾斜当接面６に押し当てて配管３とコネクタ２を接続する。ここでフレアナット１をコネクタ２に締結する際には、ナット部９に電動レンチ（オープンエンドレンチ）等の電動工具（図示せず）を係合してフレアナット１をコネクタ２に締結し、その後、ナット部９にトルクレンチ（図示せず）を係合してトルク値を確認するようにしている。   When connecting the pipe 3 to the connector 2, the flare nut 1 is screwed and fastened to the connector 2, and the conical tip 13 of the pipe 3 is pressed against the inclined contact surface 6 of the connector 2 to connect the pipe 3. And connector 2 are connected. Here, when the flare nut 1 is fastened to the connector 2, an electric tool (not shown) such as an electric wrench (open end wrench) is engaged with the nut portion 9 to fasten the flare nut 1 to the connector 2. Thereafter, a torque wrench (not shown) is engaged with the nut portion 9 to check the torque value.

尚、本発明と関連する先行技術文献情報としては、例えば、下記の特許文献１、２が既に存在し、電動レンチには下記の特許文献３が存在している。
特開平６−２３５４８３号公報 特開平１０−８９５５７号公報 特開２００３−３４０７３９号公報 As prior art document information related to the present invention, for example, the following Patent Documents 1 and 2 already exist, and the following Patent Document 3 exists for an electric wrench.
Japanese Patent Laid-Open No. 6-235383 JP-A-10-89557 JP 2003-340739 A

しかしながら、図７に示す如くコネクタ２の近傍に隣接部材１４を備える場合には、隣接部材１４とナット部９との隙間Ｓ１に電動工具（図示せず）を挿入し且つナット部９に対して電動工具が回転可能に係合することができないため、フレアナット１を通常のレンチ等により人手で締める必要があり、コネクタ２とフレアナット１の締結に手間と時間がかかり、コストが増加するという問題があった。   However, when the adjacent member 14 is provided in the vicinity of the connector 2 as shown in FIG. 7, an electric tool (not shown) is inserted into the gap S <b> 1 between the adjacent member 14 and the nut portion 9 and the nut portion 9 is inserted. Since the electric tool cannot be rotatably engaged, it is necessary to manually tighten the flare nut 1 with a normal wrench or the like, and it takes time and labor to fasten the connector 2 and the flare nut 1, which increases costs. There was a problem.

本発明は、上述の実情に鑑みてなされたものであり、コネクタとの締結を容易にするフレアナットを提供することを目的としている。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a flare nut that facilitates fastening with a connector.

本発明は、配管を支持してコネクタのネジ部に螺合し、配管をコネクタに接続するフレアナットであって、前記配管を通し得るように内部に貫通孔を形成したフレアナット本体と、前記貫通孔と同軸でフレアナット本体の一端側に配置される第一ナット部と、該第一ナット部と同軸でフレアナット本体の他端側に配置される第二ナット部とを備え、
前記第一ナット部と第二ナット部とは、フレアナット本体の周囲面を露出させるように離間して配置され、
前記フレアナット本体は、第二ナット部側の貫通孔が第一ナット部側の貫通孔より小径であると共に、外径が第一ナット部から第二ナット部へ向かって小さくなるテーパ状であり、
前記第二ナット部の外径は、第二ナット部側の貫通孔及びフレアナット本体の第二ナット部側の外径より大径に形成されると共に、第一ナット部の外径より小径に形成されたことを特徴とするフレアナット、にかかるものである。 The present invention is a flare nut that supports a pipe and is screwed into a threaded portion of a connector to connect the pipe to the connector, and a flare nut body having a through hole formed therein so that the pipe can be passed through, A first nut portion disposed on one end side of the flare nut main body coaxially with the through hole, and a second nut portion disposed on the other end side of the flare nut main body coaxial with the first nut portion,
The first nut portion and the second nut portion are spaced apart so as to expose the peripheral surface of the flare nut body,
The flare nut body has a tapered shape in which the through hole on the second nut portion side has a smaller diameter than the through hole on the first nut portion side, and the outer diameter decreases from the first nut portion toward the second nut portion. ,
The outer diameter of the second nut portion is formed larger than the outer diameter of the through hole on the second nut portion side and the second nut portion side of the flare nut body, and smaller than the outer diameter of the first nut portion. The present invention relates to a flare nut characterized by being formed.

上記した本発明のフレアナットによれば、コネクタの近傍に隣接部材を備える状態で第一ナット部と隣接部材との隙間が狭い場合であっても、第二ナット部に対して電動工具を回転可能に係合するので、コネクタとの締結を容易にすることができる。またコネクタとフレアナットとの締結を容易にするので、手間と時間を削減してコストを抑制することができるという種々の優れた効果を奏し得る。   According to the flare nut of the present invention described above, the power tool is rotated with respect to the second nut portion even when the gap between the first nut portion and the adjacent member is narrow with the adjacent member provided in the vicinity of the connector. Since it engages possible, fastening with a connector can be made easy. In addition, since it is easy to fasten the connector and the flare nut, it is possible to achieve various excellent effects that labor and time can be reduced and costs can be suppressed.

以下本発明の実施の形態を図面を参照しつつ説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１〜図４は本発明を実施する形態の一例を示すもので、本形態例においてフレアナット１５は、テーパ状のフレアナット本体１６を備えており、フレアナット本体１６の軸心部分には配管３を通す貫通孔１７が形成されている。またフレアナット本体１６の大径側の端部には、貫通孔１７と同軸に位置する六角の第一ナット部１８が備えられると共に、フレアナット本体１６の小径側の端部には、第一ナット部１８と同軸に位置する六角の第二ナット部１９が備えられている。更にフレアナット本体１６の貫通孔１７は、第一ナット部１８側（大径側）の内径を大きく形成すると共に第二ナット部１９側（小径側）の内径を小さく形成して中央位置に配管を支持する段差部２０を構成しており、ナット部側の貫通孔１７の内周面には、コネクタ２のネジ部７に螺合し得るようにネジ溝のネジ部２１が形成されている。   1 to 4 show an example of an embodiment for carrying out the present invention. In this embodiment, the flare nut 15 includes a tapered flare nut main body 16. A through hole 17 through which the pipe 3 passes is formed. Further, a hexagonal first nut portion 18 positioned coaxially with the through hole 17 is provided at the end portion on the large diameter side of the flare nut body 16, and a first end portion on the small diameter side of the flare nut body 16 is provided at the first end portion. A hexagonal second nut part 19 positioned coaxially with the nut part 18 is provided. Further, the through-hole 17 of the flare nut body 16 is formed with a large inner diameter on the first nut portion 18 side (large diameter side) and a small inner diameter on the second nut portion 19 side (small diameter side), and is piped at the center position. Is formed on the inner peripheral surface of the through hole 17 on the nut portion side so as to be screwed into the screw portion 7 of the connector 2. .

ここで、第二ナット部１９と第一ナット部１８との外径の大きさを比較すると、第二ナット部１９の外径は、図２に示す如く第一ナット部１８の外径よりも半径距離で所定長さＬほど短くなるように小径で構成されると共に、電動レンチ（オープンエンドレンチ）等の電動工具（図示せず）が係合し得る大きさで形成されている。   Here, comparing the outer diameters of the second nut portion 19 and the first nut portion 18, the outer diameter of the second nut portion 19 is larger than the outer diameter of the first nut portion 18 as shown in FIG. It is configured with a small diameter so as to be shorter by a predetermined distance L in the radial distance, and is formed in a size that can be engaged with an electric tool (not shown) such as an electric wrench (open end wrench).

また図４に示す如くコネクタ２の近傍に隣接部材１４を備える状態でフレアナット１５をコネクタ２に締結した場合に、第一ナット部１８と隣接部材１４との隙間Ｓ１は、トルクレンチ（図示せず）を挿入し且つトルクレンチが回転可能に係合できる広さになると同時に、第一ナット部１８に対して電動レンチ（オープンエンドレンチ）等の電動工具（図示せず）が回転可能に係合できない広さになり、第二ナット部１９と隣接部材１４との隙間Ｓ２は、電動工具を挿入し且つ第二ナット部１９に対して電動工具が回転可能に係合し得る広さになる。ここで、コネクタ２の隣接位置に配置される隣接部材１４は、エアドライヤ本体（図示せず）の側面部分でも良いし、コネクタ２を備える対象物の一部でも良いし、コネクタ２とは無関係の構成物でも良い。また隣接部材１４は、図４の如く側面を備えるものでも良いし、他の凹凸の構造を備えるものでも良く、第一ナット部１８が隣接部材１４に対して少なくとも隙間Ｓ１を備えると共に第二ナット部１９が隣接部材１４に対して少なくとも隙間Ｓ２を備えるならば特に制限されるものではない。   4, when the flare nut 15 is fastened to the connector 2 with the adjacent member 14 provided in the vicinity of the connector 2, the gap S1 between the first nut portion 18 and the adjacent member 14 is a torque wrench (not shown). And an electric tool (not shown) such as an electric wrench (open end wrench) can be rotated with respect to the first nut portion 18 at the same time. The gap S2 between the second nut portion 19 and the adjacent member 14 is wide enough to insert the electric tool and allow the electric tool to be rotatably engaged with the second nut portion 19. . Here, the adjacent member 14 disposed at the adjacent position of the connector 2 may be a side surface portion of an air dryer main body (not shown), may be a part of an object including the connector 2, or is irrelevant to the connector 2. It may be a composition. Further, the adjacent member 14 may have a side surface as shown in FIG. 4 or may have another uneven structure, and the first nut portion 18 has at least a gap S1 with respect to the adjacent member 14 and a second nut. If the part 19 is provided with the clearance gap S2 at least with respect to the adjacent member 14, it will not restrict | limit in particular.

以下、本発明を実施する形態例の作用を説明する。   The operation of the embodiment for carrying out the present invention will be described below.

配管３をコネクタ２に接続するためにコネクタ２にフレアナット１５を締結する際には、第二ナット部１９に電動工具（図示せず）を係合してフレアナット１５をコネクタ２に締結し、その後、第一ナット部１８にトルクレンチ（図示せず）を係合してトルク値を確認する。   When the flare nut 15 is fastened to the connector 2 in order to connect the pipe 3 to the connector 2, an electric tool (not shown) is engaged with the second nut portion 19 to fasten the flare nut 15 to the connector 2. Thereafter, a torque wrench (not shown) is engaged with the first nut portion 18 to check the torque value.

従って、上記形態例によれば、コネクタ２の近傍に隣接部材１４を備える状態で第一ナット部１８と隣接部材１４との隙間Ｓ１が狭い場合であっても、第二ナット部１９に対して電動工具が回転可能に係合するので、コネクタ２との締結を容易にすることができる。またコネクタ２とフレアナット１５との締結を容易にするので、手間と時間を削減してコストを抑制することができる。更に外径の異なる第一ナット部１８と第二ナット部１９とを備えるので、フレアナット１５の締結方法の自由度が高まり、コネクタ２とフレアナット１５との締結を容易にすることができる。   Therefore, according to the above-described embodiment, even when the gap S1 between the first nut portion 18 and the adjacent member 14 is narrow with the adjacent member 14 provided in the vicinity of the connector 2, the second nut portion 19 is not affected. Since the electric tool is rotatably engaged, the fastening with the connector 2 can be facilitated. Further, since the connector 2 and the flare nut 15 are easily fastened, labor and time can be reduced and the cost can be suppressed. Furthermore, since the first nut portion 18 and the second nut portion 19 having different outer diameters are provided, the degree of freedom in the method of fastening the flare nut 15 is increased, and the fastening between the connector 2 and the flare nut 15 can be facilitated.

尚、本発明のフレアナットは、上述の形態例にのみ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内において種々変更を加え得ることは勿論である。   In addition, the flare nut of this invention is not limited only to the above-mentioned example, Of course, various changes can be added within the range which does not deviate from the summary of this invention.

本発明を実施する形態例を示す正面図である。It is a front view which shows the example of an embodiment which implements this invention. 本発明を実施する形態例を示す断面図である。It is sectional drawing which shows the example of an embodiment which implements this invention. 図１のＩＩＩ−ＩＩＩ方向の矢視図である。It is an arrow view of the III-III direction of FIG. 隣接部材と第一ナット部、隣接部材と第二ナット部との隙間を示す概念図である。It is a conceptual diagram which shows the clearance gap between an adjacent member and a 1st nut part, and an adjacent member and a 2nd nut part. 従来例を示す正面図である。It is a front view which shows a prior art example. 従来例を示す断面図である。It is sectional drawing which shows a prior art example. 従来例のフレアナットにコネクタ及び配管を備えた状態を示す概念図である。It is a conceptual diagram which shows the state provided with the connector and piping in the flare nut of the prior art example.

符号の説明Explanation of symbols

１５ フレアナット
１６ フレアナット本体
１７ 貫通孔
１８ 第一ナット部
１９ 第二ナット部 15 Flare nut 16 Flare nut body 17 Through hole 18 First nut part 19 Second nut part

Claims (1)

配管を支持してコネクタのネジ部に螺合し、配管をコネクタに接続するフレアナットであって、前記配管を通し得るように内部に貫通孔を形成したフレアナット本体と、前記貫通孔と同軸でフレアナット本体の一端側に配置される第一ナット部と、該第一ナット部と同軸でフレアナット本体の他端側に配置される第二ナット部とを備え、
前記第一ナット部と第二ナット部とは、フレアナット本体の周囲面を露出させるように離間して配置され、
前記フレアナット本体は、第二ナット部側の貫通孔が第一ナット部側の貫通孔より小径であると共に、外径が第一ナット部から第二ナット部へ向かって小さくなるテーパ状であり、
前記第二ナット部の外径は、第二ナット部側の貫通孔及びフレアナット本体の第二ナット部側の外径より大径に形成されると共に、第一ナット部の外径より小径に形成されたことを特徴とするフレアナット。 A flare nut that supports a pipe and is screwed to a screw portion of a connector to connect the pipe to the connector, and a flare nut body having a through hole formed therein so that the pipe can be passed through, and coaxial with the through hole A first nut portion disposed on one end side of the flare nut body, and a second nut portion disposed coaxially with the first nut portion and disposed on the other end side of the flare nut body,
The first nut portion and the second nut portion are spaced apart so as to expose the peripheral surface of the flare nut body,
The flare nut body has a tapered shape in which the through hole on the second nut portion side has a smaller diameter than the through hole on the first nut portion side, and the outer diameter decreases from the first nut portion toward the second nut portion. ,
The outer diameter of the second nut portion is formed larger than the outer diameter of the through hole on the second nut portion side and the second nut portion side of the flare nut body, and smaller than the outer diameter of the first nut portion. Flared nut characterized by being formed.
JP2008185771A 2008-07-17 2008-07-17 Flare nut Active JP5579375B2 (en)

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JPS5377256U (en) * 1976-11-30 1978-06-27
JPS53104868U (en) * 1977-01-27 1978-08-23
JPS53140455A (en) * 1977-05-12 1978-12-07 Kazumi Matsumoto Square bolt and nut with two different widths available in various sizes
JPS55162072U (en) * 1979-05-09 1980-11-20
JPS5956408U (en) * 1982-10-06 1984-04-13 松田　国守 Multiple outer diameter nuts
JPS6012709U (en) * 1983-07-07 1985-01-28 東出　昭 two-stage hexagonal nut
JPS633515U (en) * 1986-06-25 1988-01-11
JPH0614674U (en) * 1992-06-24 1994-02-25 株式会社柿崎製作所 Resin cap nut
JPH06235483A (en) * 1993-02-04 1994-08-23 Hino Motors Ltd Flare nut
JPH06331076A (en) * 1993-05-17 1994-11-29 Hino Motors Ltd Connector part using flare nut
JP3022314U (en) * 1995-09-01 1996-03-22 ユニオート、インコーポレーテッド Improved wheel nut
JPH09242950A (en) * 1996-03-11 1997-09-16 Hayakawa Valve Seisakusho:Kk Inserting joint for fluid pipe
JP3056855U (en) * 1998-08-20 1999-03-05 株式会社ウェッズ Hub nut for automobile wheel
JP2005291430A (en) * 2004-04-02 2005-10-20 Trinity Ind Corp Pipe coupling

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