JP6119446B2 - Delivery pipe - Google Patents

Delivery pipe Download PDF

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Publication number
JP6119446B2
JP6119446B2 JP2013127751A JP2013127751A JP6119446B2 JP 6119446 B2 JP6119446 B2 JP 6119446B2 JP 2013127751 A JP2013127751 A JP 2013127751A JP 2013127751 A JP2013127751 A JP 2013127751A JP 6119446 B2 JP6119446 B2 JP 6119446B2
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Prior art keywords
cylindrical connector
protrusion
delivery pipe
cylindrical
fuel injection
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JP2013127751A
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JP2015001224A (en
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達矢 井上
達矢 井上
大雄 粟田
大雄 粟田
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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Priority to JP2013127751A priority Critical patent/JP6119446B2/en
Priority to CN201410256846.1A priority patent/CN104234896B/en
Priority to DE102014211136.6A priority patent/DE102014211136B4/en
Publication of JP2015001224A publication Critical patent/JP2015001224A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025Common rails
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04Injectors peculiar thereto
    • F02M69/042Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/852Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/853Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/855Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/856Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/857Mounting of fuel injection apparatus characterised by mounting fuel or common rail to engine

Description

本発明は、デリバリパイプに関し、特に、車両に搭載され、燃料噴射弁の回転を防止する突起を有する筒状ホルダを有するデリバリパイプに関する。   The present invention relates to a delivery pipe, and more particularly to a delivery pipe having a cylindrical holder that is mounted on a vehicle and has a protrusion that prevents rotation of a fuel injection valve.

従来、車両に搭載される内燃機関は、シリンダヘッドの近傍に気筒列方向と同方向にデリバリパイプが配設されている、このデリバリパイプには各シリンダに燃料を噴射する燃料噴射弁が取付けられており、この燃料噴射弁は、デリバリパイプの本体部に設けられた筒状コネクタに連結されている。   2. Description of the Related Art Conventionally, an internal combustion engine mounted on a vehicle has a delivery pipe disposed in the same direction as the cylinder row direction in the vicinity of the cylinder head, and a fuel injection valve that injects fuel into each cylinder is attached to the delivery pipe. The fuel injection valve is connected to a cylindrical connector provided in the main body of the delivery pipe.

ところで、多孔式の燃料噴射弁を用いる場合等には、燃料噴射弁の中心軸回りの回転位置(向き)が異なると、吸気ポートまたは燃焼室への燃料噴射状態が変化するので、排気ガスの成分や燃費等の燃焼状態に悪影響を与えることがあることから、燃料噴射弁のデリバリパイプへの取付けにあっては、シリンダ毎に燃料噴射弁の向きが所望する方向に向くように調整する必要がある。   By the way, when using a porous fuel injection valve or the like, if the rotational position (orientation) around the central axis of the fuel injection valve is different, the fuel injection state to the intake port or the combustion chamber changes. Because it may adversely affect the combustion state such as components and fuel consumption, it is necessary to adjust the direction of the fuel injection valve to the desired direction for each cylinder when mounting the fuel injection valve to the delivery pipe There is.

このため、例えば、特許文献1に記載されるように、デリバリパイプの本体部に溶着された筒状コネクタに位置決め部としての角形の突起を形成し、この突起を燃料噴射弁に嵌め込むことで、燃料噴射弁の向きを所望する向きに位置させるようにしている。   For this reason, for example, as described in Patent Document 1, a rectangular projection as a positioning portion is formed on a cylindrical connector welded to a main body portion of a delivery pipe, and this projection is fitted into a fuel injection valve. The fuel injection valve is positioned in a desired direction.

一方、複数の筒状コネクタをデリバリパイプの本体部に取付ける場合には、治具によって複数の筒状コネクタをデリバリパイプの本体部に仮固定した後に、本体部に溶着するようにしている。具体的には、図16に示すように、各筒状コネクタ51の外周部に設けられた突起52を治具53の凹部53aに嵌め込んだ状態で筒状コネクタ51を治具53に保持し、この状態で筒状コネクタ51をデリバリパイプの本体部54に仮固定した後、溶接機によって筒状コネクタ51をデリバリパイプの本体部54に溶着するようにしている。   On the other hand, when a plurality of cylindrical connectors are attached to the main body of the delivery pipe, the plurality of cylindrical connectors are temporarily fixed to the main body of the delivery pipe with a jig and then welded to the main body. Specifically, as shown in FIG. 16, the cylindrical connector 51 is held on the jig 53 in a state in which the protrusions 52 provided on the outer peripheral portion of each cylindrical connector 51 are fitted in the recess 53 a of the jig 53. In this state, the cylindrical connector 51 is temporarily fixed to the main body portion 54 of the delivery pipe, and then the cylindrical connector 51 is welded to the main body portion 54 of the delivery pipe by a welding machine.

特開2003−120466号公報JP 2003-120466 A

しかしながら、このような従来のデリバリパイプにあっては、筒状コネクタ51の突起52が角形であるため、それぞれの燃料噴射弁の向きが一定でない、すなわち、筒状コネクタ51の突起52の向きが同方向に向いていない場合には、筒状コネクタ51を本体部54に溶着した後、治具53を筒状コネクタ51から引き抜く際に、突起52が治具53の凹部53aに引っ掛かってしまい、筒状コネクタ51から治具53を引き抜くことができない。   However, in such a conventional delivery pipe, since the projection 52 of the cylindrical connector 51 is square, the direction of each fuel injection valve is not constant, that is, the direction of the projection 52 of the cylindrical connector 51 is If they are not oriented in the same direction, the projection 52 is caught in the recess 53a of the jig 53 when the jig 53 is pulled out from the cylindrical connector 51 after the cylindrical connector 51 is welded to the main body 54. The jig 53 cannot be pulled out from the cylindrical connector 51.

このため、複数の治具によって筒状コネクタ51を保持するか、あるいは、図17に示すように、筒状コネクタ51の間の治具53の部位に治具53と別体の複数の入れ子55を設け、治具53を引き抜く前に、矢印で示すように治具53から入れ子55を引き抜く必要がある。したがって、治具53の構成が複雑になってデリバリパイプの製造が面倒なものとなってしまい、デリバリパイプの製造作業の作業性が悪化してしまうという問題があった。   For this reason, the cylindrical connector 51 is held by a plurality of jigs, or as shown in FIG. Before the jig 53 is pulled out, it is necessary to pull out the insert 55 from the jig 53 as indicated by an arrow. Therefore, the configuration of the jig 53 is complicated, and the manufacture of the delivery pipe becomes troublesome, and the workability of the delivery operation of the delivery pipe is deteriorated.

本発明は、上記のような問題点に着目してなされたものであり、デリバリパイプの製造作業の作業性を向上させつつ、燃料噴射弁をその中心軸回りの回転方向で所望の位置に位置決めすることができるデリバリパイプを提供することを目的とするものである。   The present invention has been made paying attention to the above-mentioned problems, and positioning the fuel injection valve at a desired position in the rotational direction around its central axis while improving the workability of the delivery pipe manufacturing operation. It is an object of the present invention to provide a delivery pipe that can be used.

本発明の第1の態様は、内燃機関の気筒列方向に延在する本体部と、前記本体部に前記気筒列方向に沿って設けられ、外周部に第1の突起が形成された複数の燃料噴射弁が連結される複数の筒状コネクタと、前記筒状コネクタの外周部に形成された第2の突起とを含んで構成され、前記第2の突起に係合する凹部を有する治具によって少なくとも1組の隣接する筒状コネクタにおいて前記第2の突起が異なる方向に向くように、前記筒状コネクタが前記本体部に仮固定された後に、前記筒状コネクタと前記本体部とが溶着され、前記第1の突起および前記第2の突起が前記筒状コネクタの中心軸方向に重なるように前記第1の突起および前記第2の突起に係合する係合部を有する回転規制部材によって、前記筒状コネクタの中心軸回りに回転しないように前記燃料噴射弁が前記筒状コネクタに連結されるデリバリパイプであって、前記第2の突起が、前記筒状コネクタに外接する円弧と、前記円弧の端点から互いに交差する方向に直線的に延在する一対の斜辺とを有し、前記筒状コネクタの中心軸を通り前記気筒列方向と直交する方向に延在する直線を基準線とした場合に、前記筒状コネクタの円弧が前記基準線に対して非対称となるように前記第2の突起が前記筒状コネクタに配置され、かつ、前記第2の突起の斜辺が、前記円弧の各端点を通り、前記基準線と平行な2本の仮想線の間の領域に配置されるものから構成されている。 According to a first aspect of the present invention, there are provided a main body portion extending in a cylinder row direction of an internal combustion engine, and a plurality of the main body portion provided along the cylinder row direction and having a first protrusion formed on an outer peripheral portion. A jig including a plurality of cylindrical connectors to which a fuel injection valve is connected and a second protrusion formed on an outer peripheral portion of the cylindrical connector, and having a recess that engages with the second protrusion. The cylindrical connector and the main body are welded after the cylindrical connector is temporarily fixed to the main body so that the second protrusion faces in a different direction in at least one pair of adjacent cylindrical connectors. And a rotation restricting member having an engaging portion that engages with the first protrusion and the second protrusion so that the first protrusion and the second protrusion overlap with each other in the central axis direction of the cylindrical connector . , Rotating around the central axis of the cylindrical connector The fuel injection valve is a delivery pipe connected to the cylindrical connector so that the second protrusion is linearly extending in a direction intersecting with each other from an arc circumscribing the cylindrical connector and an end point of the arc. Having a pair of oblique sides extending in a straight line, and a straight line extending in a direction orthogonal to the cylinder row direction passing through the central axis of the cylindrical connector is a reference line, the arc of the cylindrical connector is The second protrusion is disposed on the cylindrical connector so as to be asymmetric with respect to the reference line, and the hypotenuse of the second protrusion passes through each end point of the arc and is parallel to the reference line. It is comprised from what is arrange | positioned in the area | region between two virtual lines.

本発明の第2の態様としては、筒状コネクタが、同一の気筒に2つ設けられ、同一の気筒に設けられた第2の突起の少なくとも1つが、基準線に対して隣接する筒状コネクタ側に傾くようにしてもよい。
本発明の第3の態様としては、第1の突起は、斜辺が筒状コネクタの中心軸と円弧の二等分点を通る仮想線に対して対称な三角形または台形に形成されるようにしてもよい。
As a second aspect of the present invention, two cylindrical connectors are provided in the same cylinder, and at least one of the second protrusions provided in the same cylinder is adjacent to the reference line. You may make it incline to the side.
As a third aspect of the present invention, the first protrusion is formed in a triangular or trapezoidal shape with a hypotenuse that is symmetrical with respect to an imaginary line that passes through the bisector of the arc and the central axis of the cylindrical connector Also good.

このように上記の第1の態様によれば、筒状コネクタの第2の突起が、筒状コネクタに外接する円弧と、円弧の端点から互いに交差する方向に直線的に延在する一対の斜辺とを有し、筒状コネクタの中心軸を通り気筒列方向と直交する方向に延在する直線を基準線とした場合に、筒状コネクタの円弧が基準線に対して非対称となるように第2の突起が筒状コネクタに配置され、第1の突起および第2の突起に係合する係合部を有する回転規制部材によって、筒状コネクタの中心軸回りに回転しないように燃料噴射弁が筒状コネクタに連結される。このため、燃料噴射弁をその中心軸回りの回転方向の所望の位置に位置決めすることができる。   As described above, according to the first aspect, the second protrusion of the cylindrical connector has an arc circumscribing the cylindrical connector and a pair of oblique sides extending linearly in a direction intersecting with each other from the end point of the arc. When the straight line extending in the direction perpendicular to the cylinder row direction through the central axis of the cylindrical connector is used as the reference line, the circular arc of the cylindrical connector is asymmetrical with respect to the reference line. The fuel injection valve is prevented from rotating around the central axis of the tubular connector by the rotation restricting member having the engaging portions engaged with the first protrusion and the second protrusion. Connected to the cylindrical connector. For this reason, the fuel injection valve can be positioned at a desired position in the rotation direction around the central axis.

また、筒状コネクタの第2の突起の斜辺が、円弧の各端点を通り、基準線と平行な2本の仮想線の間の領域に配置されるので、筒状コネクタを本体部に仮固定するための治具を筒状コネクタに着脱する際に、第2の突起が治具の凹部に引っ掛かることを防止することができる。
このため、従来のように複雑な構成の治具や多数の治具を用いることなく、筒状コネクタを本体部に容易に溶着することができ、デリバリパイプの製造作業の作業性を向上させることができる。
In addition, since the hypotenuse of the second projection of the cylindrical connector passes through each end point of the arc and is disposed in a region between two virtual lines parallel to the reference line, the cylindrical connector is temporarily fixed to the main body. It is possible to prevent the second protrusion from being caught in the concave portion of the jig when the jig for doing so is attached to or detached from the cylindrical connector.
For this reason, the cylindrical connector can be easily welded to the main body without using a complicatedly configured jig or a large number of jigs as in the past, and the workability of the delivery pipe manufacturing work is improved. Can do.

上記の第2の態様によれば、筒状コネクタが、同一の気筒に2つ設けられ、同一の気筒に設けられた第2の突起の少なくとも1つが、基準線に対して隣接する筒状コネクタ側に傾くように構成されるので、筒状コネクタが気筒列方向に短い間隔で本体部に取付けられる場合に、多数の筒状コネクタを治具によって本体部に仮固定する必要がある。
この場合でも、燃料噴射弁をその中心軸回りの回転方向の所望の位置に位置決めすることができるとともに、従来のように複雑な構成の治具や多数の治具を用いることなく、筒状コネクタを本体部に容易に溶着することができ、デリバリパイプの製造作業の作業性を向上させることができる。
According to the second aspect, two cylindrical connectors are provided in the same cylinder, and at least one of the second protrusions provided in the same cylinder is adjacent to the reference line. Therefore, when the cylindrical connector is attached to the main body at short intervals in the cylinder row direction, it is necessary to temporarily fix a large number of cylindrical connectors to the main body with a jig.
Even in this case, the fuel injection valve can be positioned at a desired position in the rotational direction around its central axis, and the cylindrical connector can be used without using a jig having a complicated structure or a large number of jigs as in the prior art. Can be easily welded to the main body, and the workability of the delivery pipe manufacturing operation can be improved.

上記の第3の態様によれば、第2の突起が、斜辺が筒状コネクタの中心軸と円弧の二等分点を通る仮想線に対して対称な三角形または台形に形成されるので、基準線に対して円周方向の一方または円周方向の他方のいずれの方向に第2の突起を位置させた場合であっても、筒状コネクタを本体部に仮固定するための治具を筒状コネクタに着脱する際に、第2の突起が治具の凹部に引っ掛かることを防止することができる。
このため、従来のように複雑な構成の治具や多数の治具を用いることなく、筒状コネクタを本体部に容易に溶着することができ、デリバリパイプの製造作業の作業性をより効果的に向上させることができる。
According to the third aspect, the second protrusion is formed in a triangular or trapezoidal shape that is symmetrical with respect to an imaginary line whose hypotenuse passes through a bisection point between the central axis of the cylindrical connector and the arc. Even if the second protrusion is positioned in one of the circumferential directions or the other circumferential direction with respect to the wire, a jig for temporarily fixing the cylindrical connector to the main body portion is The second protrusion can be prevented from being caught in the concave portion of the jig when being attached to and detached from the connector.
For this reason, the cylindrical connector can be easily welded to the main body without using a complicatedly configured jig or a large number of jigs as in the past, and the workability of the delivery pipe manufacturing work is more effective. Can be improved.

図1は、本発明のデリバリパイプの一実施形態を示す図であり、デリバリパイプを備えた内燃機関の左側正面図である。FIG. 1 is a diagram showing an embodiment of a delivery pipe according to the present invention, and is a left front view of an internal combustion engine provided with a delivery pipe. 図2は、本発明のデリバリパイプの一実施形態を示す図であり、後方側から見たシリンダヘッドおよび吸気マニホールドの外観図である。FIG. 2 is a view showing an embodiment of the delivery pipe of the present invention, and is an external view of the cylinder head and the intake manifold as seen from the rear side. 図3は、本発明のデリバリパイプの一実施形態を示す図であり、シリンダヘッドおよび吸気マニホールドの縦断面図である。FIG. 3 is a view showing an embodiment of the delivery pipe of the present invention, and is a longitudinal sectional view of a cylinder head and an intake manifold. 図4は、本発明のデリバリパイプの一実施形態を示す図であり、デリバリパイプおよび燃料噴射弁の正面図である。FIG. 4 is a view showing an embodiment of the delivery pipe of the present invention, and is a front view of the delivery pipe and the fuel injection valve. 図5は、本発明のデリバリパイプの一実施形態を示す図であり、デリバリパイプおよび燃料噴射弁の分解斜視図である。FIG. 5 is a view showing an embodiment of the delivery pipe of the present invention, and is an exploded perspective view of the delivery pipe and the fuel injection valve. 図6は、本発明のデリバリパイプの一実施形態を示す図であり、燃料噴射弁をデリバリパイプに取付ける状態を示す図である。FIG. 6 is a view showing an embodiment of the delivery pipe of the present invention, and is a view showing a state in which the fuel injection valve is attached to the delivery pipe. 図7は、本発明のデリバリパイプの一実施形態を示す図であり、燃料噴射弁がデリバリパイプに取付けられた状態を示す図である。FIG. 7 is a view showing an embodiment of the delivery pipe of the present invention, and is a view showing a state in which the fuel injection valve is attached to the delivery pipe. 図8は、本発明のデリバリパイプの一実施形態を示す図であり、クリップの外観図である。FIG. 8 is a view showing an embodiment of the delivery pipe of the present invention, and is an external view of a clip. 図9は、本発明のデリバリパイプの一実施形態を示す図であり、図9と異なる方向から見たクリップの外観図である。FIG. 9 is a view showing an embodiment of the delivery pipe of the present invention, and is an external view of the clip viewed from a different direction from FIG. 図10は、本発明のデリバリパイプの一実施形態を示す図であり、デリバリパイプの底面図である。FIG. 10 is a view showing an embodiment of the delivery pipe of the present invention, and is a bottom view of the delivery pipe. 図11は、本発明のデリバリパイプの一実施形態を示す図であり、治具によって円筒コネクタを本体部に仮固定する状態を示す図である。FIG. 11 is a view showing an embodiment of the delivery pipe of the present invention, and is a view showing a state in which a cylindrical connector is temporarily fixed to a main body portion by a jig. 図12は、本発明のデリバリパイプの一実施形態を示す図であり、他の構成の突起を有する円筒コネクタを示す図である。FIG. 12 is a view showing an embodiment of the delivery pipe of the present invention, and is a view showing a cylindrical connector having a protrusion having another configuration. 図13は、本発明のデリバリパイプの一実施形態を示す図であり、他の構成の突起を有する円筒コネクタを示す図である。FIG. 13 is a view showing an embodiment of the delivery pipe of the present invention, and is a view showing a cylindrical connector having a protrusion having another configuration. 図14は、本発明のデリバリパイプの一実施形態を示す図であり、燃料噴射弁を他の構成のデリバリパイプに取付ける状態を示す図である。FIG. 14 is a view showing an embodiment of a delivery pipe of the present invention, and is a view showing a state in which a fuel injection valve is attached to a delivery pipe having another configuration. 図15は、本発明のデリバリパイプの一実施形態を示す図であり、他の構成を有するデリバリパイプに対し、治具によって円筒コネクタを本体部に仮固定する状態を示す図である。FIG. 15 is a view showing an embodiment of a delivery pipe according to the present invention, and is a view showing a state in which a cylindrical connector is temporarily fixed to a main body by a jig with respect to a delivery pipe having another configuration. 図16は、本発明のデリバリパイプの一実施形態を示す図であり、治具によって従来の円筒コネクタを本体部に仮固定する状態を示す図である。FIG. 16 is a view showing an embodiment of a delivery pipe according to the present invention, and is a view showing a state in which a conventional cylindrical connector is temporarily fixed to a main body by a jig. 図17は、本発明のデリバリパイプの一実施形態を示す図であり、他の治具によって従来の円筒コネクタを本体部に仮固定する状態を示す図である。FIG. 17 is a view showing an embodiment of a delivery pipe according to the present invention, and is a view showing a state in which a conventional cylindrical connector is temporarily fixed to a main body by another jig.

以下、本発明に係るデリバリパイプの実施形態について、図面を用いて説明する。
図1〜図15は、本発明に係る一実施形態のデリバリパイプを示す図である。
まず、構成を説明する。図1〜図3において、内燃機関としてのエンジン1は、図示しないピストンを内蔵した気筒を有し、クランクシャフト6を回転自在に支持するクランクケース3が一体的に設けられたシリンダブロック2と、シリンダブロック2の底部に設けられたオイルパン4と、シリンダブロック2の上部に設けられたシリンダヘッド5とを備えている。
Hereinafter, embodiments of a delivery pipe according to the present invention will be described with reference to the drawings.
1 to 15 are views showing a delivery pipe according to an embodiment of the present invention.
First, the configuration will be described. 1 to 3, an engine 1 as an internal combustion engine has a cylinder with a piston (not shown), and a cylinder block 2 integrally provided with a crankcase 3 that rotatably supports a crankshaft 6; An oil pan 4 provided at the bottom of the cylinder block 2 and a cylinder head 5 provided at the top of the cylinder block 2 are provided.

シリンダヘッド5に吸気マニホールド7が取付けられており、吸気マニホールド7は、図示しない吸気管から吸入された空気をシリンダヘッド5の吸気ポート5aを通して各気筒に分配して導入するようになっている。なお、本実施形態の吸気マニホールド7は、4つの吸気枝管7a〜7dが設けられており、エンジン1は、4気筒エンジンを構成している。また、シリンダヘッド5には図示しない吸気バルブが設けられており、この吸気バルブは、図示しない吸気カムの回転に伴って吸気ポート5aを開閉するようになっている。   An intake manifold 7 is attached to the cylinder head 5, and the intake manifold 7 distributes and introduces air sucked from an unillustrated intake pipe to each cylinder through an intake port 5 a of the cylinder head 5. The intake manifold 7 of the present embodiment is provided with four intake branch pipes 7a to 7d, and the engine 1 constitutes a four-cylinder engine. The cylinder head 5 is provided with an intake valve (not shown). The intake valve opens and closes the intake port 5a as the intake cam (not shown) rotates.

また、シリンダヘッド5にはデリバリパイプ8が設けられており、このデリバリパイプ8は、図2中、左右方向の気筒列方向に沿って延在し、高圧燃料配管8Aを通して燃料が導入される本体部9と、本体部9の下部に設けられ、燃料噴射弁11が接続される筒状コネクタ10とを含んで構成されている。
筒状コネクタ10および燃料噴射弁11は、気筒毎に2つ設けられており、本実施形態のエンジン1は、図4、図5に示すように、8個の筒状コネクタ10および燃料噴射弁11を備えている。
The cylinder head 5 is provided with a delivery pipe 8. The delivery pipe 8 extends in the left-right cylinder row direction in FIG. 2, and a main body into which fuel is introduced through the high-pressure fuel pipe 8A. It includes a portion 9 and a cylindrical connector 10 provided at the lower portion of the main body portion 9 and connected to the fuel injection valve 11.
Two cylindrical connectors 10 and two fuel injection valves 11 are provided for each cylinder. As shown in FIGS. 4 and 5, the engine 1 according to the present embodiment includes eight cylindrical connectors 10 and fuel injection valves. 11 is provided.

ここで、図3に示すように、同一の気筒に設けられた2つの燃料噴射弁11の一方は、吸気ポート5aの上方に設けられており、燃料噴射弁11の他方は、図示される吸気ポート5aの紙面方向の奥側(車両の幅方向の右側)に設けられて吸気ポート5aに隣接する図示しない吸気ポートの上方に設けられている。すなわち、本実施形態の燃料噴射弁11は、気筒毎に設けられた一対の吸気ポートにそれぞれ設けられている。   Here, as shown in FIG. 3, one of the two fuel injection valves 11 provided in the same cylinder is provided above the intake port 5a, and the other of the fuel injection valves 11 is the intake air shown in the figure. The port 5a is provided on the far side (the right side in the width direction of the vehicle) in the paper surface direction and above the intake port (not shown) adjacent to the intake port 5a. That is, the fuel injection valve 11 of this embodiment is provided in each of a pair of intake ports provided for each cylinder.

このように燃料噴射弁11が吸気ポート5a毎に設けられるのは、例えば、主に以下の理由による。
吸気ポート内に燃料を噴射するエンジン1において、吸気ポート5aの内壁への燃料の付着を抑制することが望ましいが、燃料噴射弁11の噴射孔が燃焼室から遠い側にあるほど、噴射された燃料のうち吸気ポート5aの内壁に付着する割合が高くなる。
1気筒当たり吸気弁を2つ有するエンジン1では、吸気ポート5aが2つに分岐しているので、吸気ポート5aの分岐部より上流側に燃料噴射弁11を1つ配置していた。このため、吸気ポート5aの内壁に付着する燃料の割合が高くなる。
The fuel injection valve 11 is provided for each intake port 5a as described above mainly for the following reasons, for example.
In the engine 1 that injects fuel into the intake port, it is desirable to suppress the adhesion of fuel to the inner wall of the intake port 5a. However, the more the injection hole of the fuel injection valve 11 is located on the side farther from the combustion chamber, the more the fuel is injected. The ratio of fuel adhering to the inner wall of the intake port 5a increases.
In the engine 1 having two intake valves per cylinder, since the intake port 5a is branched into two, one fuel injection valve 11 is arranged on the upstream side of the branched portion of the intake port 5a. For this reason, the ratio of the fuel adhering to the inner wall of the intake port 5a increases.

これに対し、1つの気筒の2つの吸気ポート5aのそれぞれに燃料噴射弁11を配置すれば、燃料噴射弁11の位置を燃焼室に近づけ、吸気ポート5aの内壁への燃料の付着を抑制することができる。
さらに、2つの吸気ポート5aを開閉する吸気弁のうち、一方の吸気弁の最大リフト量が他方の吸気弁の最大リフト量よりも小さくなるような状態で運転される場合に、2つの燃料噴射弁11の燃料噴射時期や噴射量を異ならせることにより、燃費向上や燃焼促進等を図るためである。
On the other hand, if the fuel injection valve 11 is arranged in each of the two intake ports 5a of one cylinder, the position of the fuel injection valve 11 is brought close to the combustion chamber, and the adhesion of fuel to the inner wall of the intake port 5a is suppressed. be able to.
Further, when the engine is operated in a state where the maximum lift amount of one of the intake valves that opens and closes the two intake ports 5a is smaller than the maximum lift amount of the other intake valve, two fuel injections This is because the fuel injection timing and the injection amount of the valve 11 are made different so as to improve fuel consumption and promote combustion.

本体部9には2つのブラケット9aが設けられており、このブラケット9aに形成されたボルト穴にボルト14を挿通してブラケット9aをシリンダヘッド5に固定することにより、デリバリパイプ8がシリンダヘッド5に固定される。   The main body 9 is provided with two brackets 9a. The bolts 14 are inserted into the bolt holes formed in the bracket 9a to fix the bracket 9a to the cylinder head 5, whereby the delivery pipe 8 is connected to the cylinder head 5. Fixed to.

燃料噴射弁11は、燃料噴射弁本体11Aの内部に形成され、筒状コネクタ10を通して本体部9に連通する燃料通路と、燃料噴射弁本体11Aに内蔵され、燃料通路上に設けられたニードルバルブと、燃料噴射弁本体11Aに内蔵され、ニードルバルブへの通電をオンおよびオフ制御して、ニードルバルブによって燃料噴射弁11の先端に形成された噴射孔と燃料通路とを連通または非連通とする電磁コイルとを備えており、ニードルバルブによって噴射孔と燃料通路とを連通状態とすることにより、気筒の燃焼室に燃料を噴射する構成になっている。   The fuel injection valve 11 is formed inside the fuel injection valve main body 11A, communicates with the main body portion 9 through the tubular connector 10, and a needle valve provided on the fuel passage built in the fuel injection valve main body 11A. The fuel injection valve main body 11A is turned on and off to control the energization of the needle valve so that the injection hole formed at the tip of the fuel injection valve 11 by the needle valve communicates with the fuel passage. An electromagnetic coil is provided, and fuel is injected into the combustion chamber of the cylinder by bringing the injection hole and the fuel passage into communication with each other by a needle valve.

また、燃料噴射弁本体11Aには図示しないワイヤハーネスの先端に設けられた図示しない給電コネクタが接続される受電コネクタ12が取付けられている。受電コネクタ12は、給電コネクタの端子と接続されるとともに、電磁ソレノイドに電気的に接続されており、電磁ソレノイドは、給電コネクタから受電コネクタ12に電気信号が伝達されると、ニードルバルブを制御して、噴射孔と燃料通路とを連通させるようになっている。   In addition, a power receiving connector 12 to which a power supply connector (not shown) provided at the tip of a wire harness (not shown) is connected is attached to the fuel injection valve main body 11A. The power receiving connector 12 is connected to a terminal of the power supply connector and is electrically connected to an electromagnetic solenoid. The electromagnetic solenoid controls the needle valve when an electric signal is transmitted from the power supply connector to the power receiving connector 12. Thus, the injection hole and the fuel passage are communicated with each other.

また、燃料噴射弁本体11Aの上端部の外周部には図示しないOリングが設けられており、燃料噴射弁本体11Aを筒状コネクタ10の内部に挿通して燃料噴射弁本体11Aを筒状コネクタ10に連結したときに、Oリングによって筒状コネクタ10を密閉して筒状コネクタ10から燃料が漏出することが防止される。
また、図4、図5に示すように、本体部9には3つのブラケット9bが設けられており、このブラケット9bには給電コネクタのワイヤハーネスが固定されるようになっている。
Further, an O-ring (not shown) is provided on the outer peripheral portion of the upper end portion of the fuel injection valve main body 11A. The fuel injection valve main body 11A is inserted into the cylindrical connector 10 and the fuel injection valve main body 11A is connected to the cylindrical connector. When connected to the connector 10, the tubular connector 10 is sealed by the O-ring to prevent fuel from leaking from the tubular connector 10.
Also, as shown in FIGS. 4 and 5, the main body 9 is provided with three brackets 9b, and a wire harness of a power feeding connector is fixed to the bracket 9b.

図5〜図7に示すように、筒状コネクタ10の底部にはフランジ部10Aが形成されており、このフランジ部10Aの外周部には第2の突起としての突起16が形成されている。また、燃料噴射弁本体11Aの上部の外周部には第1の突起として突起15が形成されており、筒状コネクタ10および燃料噴射弁11は、突起15、16が燃料噴射弁11の中心軸方向に重なるようにクリップ13によって連結されている。   As shown in FIGS. 5 to 7, a flange portion 10 </ b> A is formed on the bottom of the cylindrical connector 10, and a protrusion 16 as a second protrusion is formed on the outer peripheral portion of the flange portion 10 </ b> A. Further, a protrusion 15 is formed as a first protrusion on the outer peripheral portion of the upper part of the fuel injection valve main body 11A, and the protrusions 15 and 16 of the cylindrical connector 10 and the fuel injection valve 11 are the central axis of the fuel injection valve 11. They are connected by clips 13 so as to overlap in the direction.

図8、図9に示すように回転規制部材を構成するクリップ13は、連結片13aによって連結された一対の挟持部13bを備えており、挟持部13bには筒状コネクタ10のフランジ部10Aに係合する開口部13cがそれぞれ形成されている。また、挟持部13bの間には係合部としての係合溝13dが形成されており、この係合溝13dには突起15、16が係合されるようになっている。   As shown in FIGS. 8 and 9, the clip 13 constituting the rotation restricting member includes a pair of holding portions 13b connected by a connecting piece 13a, and the holding portion 13b is connected to the flange portion 10A of the tubular connector 10. Engaging openings 13c are formed respectively. Further, an engaging groove 13d as an engaging portion is formed between the sandwiching portions 13b, and the protrusions 15 and 16 are engaged with the engaging groove 13d.

このクリップ13は、挟持部13bが離隔するように挟持部13bを広げ、係合溝13dに筒状コネクタ10の突起16および燃料噴射弁11の突起15を係合させた後、開口部13cに筒状コネクタ10のフランジ部10Aを挿通させることで、挟持部13bによって筒状コネクタ10および燃料噴射弁11を保持する。   The clip 13 expands the clamping portion 13b so that the clamping portion 13b is separated, and engages the projection 16 of the tubular connector 10 and the projection 15 of the fuel injection valve 11 with the engagement groove 13d, and then the opening 13c. By inserting the flange portion 10A of the cylindrical connector 10, the cylindrical connector 10 and the fuel injection valve 11 are held by the clamping portion 13b.

このとき、開口部13cに筒状コネクタ10のフランジ部10Aが挿通されるとともに、連結片13aの上端面に燃料噴射弁11の突起15が当接することにより、燃料噴射弁11が筒状コネクタ10の軸線方向に対して位置決めされて筒状コネクタ10から抜け出ることを防止することができる。   At this time, the flange portion 10A of the cylindrical connector 10 is inserted into the opening 13c, and the protrusion 15 of the fuel injection valve 11 comes into contact with the upper end surface of the connecting piece 13a, so that the fuel injection valve 11 is connected to the cylindrical connector 10. It is possible to prevent the cylindrical connector 10 from being pulled out by being positioned with respect to the axial direction.

また、係合溝13dに突起15、16が係合されることにより、突起15、16が筒状コネクタ10の中心軸方向に重なるように位置決めされるとともに、突起15、16の円周方向両端が係合溝13dに当接するため、燃料噴射弁11が筒状コネクタ10に対してその中心軸回りに回転しないように筒状コネクタに連結される。   Further, by engaging the protrusions 15 and 16 with the engaging groove 13d, the protrusions 15 and 16 are positioned so as to overlap with the central axis direction of the tubular connector 10, and both ends of the protrusions 15 and 16 in the circumferential direction are positioned. Is in contact with the engagement groove 13d, so that the fuel injection valve 11 is connected to the cylindrical connector 10 so as not to rotate about its central axis with respect to the cylindrical connector 10.

一方、本実施形態の筒状コネクタ10の突起16は、図10に示すように、筒状コネクタ10に外接する円弧16Aと、円弧16Aの端点21、22から互いに交差する方向に直線的に延在する一対の斜辺16B、16Cとを有している。
すなわち、本実施形態の突起16は、斜辺16B、16Cが筒状コネクタ10の中心軸23と円弧16Aの二等分点を通る仮想線25に対して対称な三角形に形成されている。
On the other hand, as shown in FIG. 10, the projection 16 of the cylindrical connector 10 of the present embodiment linearly extends in a direction intersecting with each other from the arc 16A circumscribing the cylindrical connector 10 and the end points 21 and 22 of the arc 16A. It has a pair of existing hypotenuses 16B and 16C.
That is, the protrusion 16 of the present embodiment is formed in a triangular shape that is symmetrical with respect to an imaginary line 25 in which the oblique sides 16B and 16C pass through the bisector of the central axis 23 of the cylindrical connector 10 and the arc 16A.

また、突起16は、筒状コネクタ10の中心軸23を通り気筒列方向と直交する方向に延在する直線を基準線24とした場合に、筒状コネクタ10の円弧16Aが基準線24に対して非対称となるように、突起16が筒状コネクタ10に配置されている。具体的に円弧16Aが基準線24に対して非対称とは、上述した仮想線25が基準線24と重ならないことである。換言すれば、仮想線25が基準線24に対して対称とは、仮想線25が基準線24に重なることである。   Further, the protrusion 16 has an arc 16A of the cylindrical connector 10 with respect to the reference line 24 when a straight line extending through the central axis 23 of the cylindrical connector 10 and extending in a direction perpendicular to the cylinder row direction is used as the reference line 24. The protrusion 16 is disposed on the tubular connector 10 so as to be asymmetrical. Specifically, the arc 16 </ b> A being asymmetric with respect to the reference line 24 means that the virtual line 25 described above does not overlap the reference line 24. In other words, the virtual line 25 being symmetrical with respect to the reference line 24 means that the virtual line 25 overlaps the reference line 24.

また、突起16の斜辺16B、16Cが、円弧16Aの端点21、22を通り、基準線24と平行な2本の仮想線26、27の間の領域に配置されている。
また、同一の気筒に設けられた2つの筒状コネクタ10のそれぞれの突起16は、同一方向でかつ、基準線24に対して隣接する筒状コネクタ10側に傾いている。したがって、燃料噴射弁11は、その中心軸回りの回転方向の所望の位置に位置決めされて筒状コネクタ10に取付けられる。
Further, the oblique sides 16B and 16C of the protrusion 16 are arranged in a region between two virtual lines 26 and 27 that pass through the end points 21 and 22 of the arc 16A and are parallel to the reference line 24.
Further, the protrusions 16 of the two cylindrical connectors 10 provided in the same cylinder are inclined in the same direction and toward the adjacent cylindrical connector 10 with respect to the reference line 24. Accordingly, the fuel injection valve 11 is positioned at a desired position in the rotational direction around the central axis and attached to the tubular connector 10.

ここで、燃料噴射弁11をその中心軸回りの回転方向の所望の位置に位置決めするのは、多孔式の燃料噴射弁11を用いる場合には、燃料噴射弁11の中心軸回りの回転位置(向き)が異なると、吸気ポート5aまたは燃焼室への燃料噴射状態が変化するので、排気ガスの成分や燃費等の燃焼状態に影響を与えることに加えて、受電コネクタ12の向きによって受電コネクタ12に給電コネクタを接続するためのスペースやワイヤハーネスを配線するスペースが確保し難い場合があるからである。このため、燃料噴射弁11のデリバリパイプ8の本体部9への取付けは、シリンダ毎に燃料噴射弁11の向きが所望の方向に向くように調整する必要がある。
このような要求から、本実施形態の筒状コネクタ10は、同一の気筒に設けられた突起16の向きを同一方向にし、かつ互いに隣接する気筒に配置される突起16の向きを異なる向きに設定している。
Here, the fuel injection valve 11 is positioned at a desired position in the rotational direction around the central axis when the porous fuel injection valve 11 is used, the rotational position around the central axis of the fuel injection valve 11 ( If the direction is different, the fuel injection state to the intake port 5a or the combustion chamber changes, so that in addition to affecting the combustion state such as the exhaust gas component and fuel consumption, the power receiving connector 12 depends on the direction of the power receiving connector 12. This is because it may be difficult to secure a space for connecting the power supply connector to the cable and a space for wiring the wire harness. For this reason, it is necessary to adjust the attachment of the fuel injection valve 11 to the main body 9 of the delivery pipe 8 so that the direction of the fuel injection valve 11 is in a desired direction for each cylinder.
From such a demand, the cylindrical connector 10 of the present embodiment sets the direction of the protrusions 16 provided in the same cylinder to the same direction and the direction of the protrusions 16 arranged in the cylinders adjacent to each other to different directions. doing.

次に、作用を説明する。
本実施形態のデリバリパイプ8は、図11に示すように、製造装置に固定された本体部9に対して、治具31を用いて複数の筒状コネクタ10を取付ける作業を行う。
Next, the operation will be described.
The delivery pipe 8 of this embodiment performs the operation | work which attaches the several cylindrical connector 10 using the jig | tool 31 with respect to the main-body part 9 fixed to the manufacturing apparatus, as shown in FIG.

図11において、治具31は、筒状コネクタ10の外周形状と同一の形状を有し、筒状コネクタ10の外周面の一部が当接する湾曲部31aと、突起16が係合される凹部31bとを備えている。図11では、4つの筒状コネクタ10を治具31に取付けているが、1つの治具31に8つの筒状コネクタ10を取付けてもよく、2つの治具31にそれぞれ4つの筒状コネクタ10を取付けてもよい。また、この凹部31bの位置は、予め筒状コネクタ10の突起16の向きに応じた位置に形成されている。また、図示していないが、治具31の底部には筒状コネクタ10を載置するための載置部が形成されており、筒状コネクタ10は、治具31から落下しないようになっている。   In FIG. 11, the jig 31 has the same shape as the outer peripheral shape of the cylindrical connector 10, a curved portion 31 a with which a part of the outer peripheral surface of the cylindrical connector 10 abuts, and a concave portion where the protrusion 16 is engaged. 31b. In FIG. 11, four cylindrical connectors 10 are attached to the jig 31, but eight cylindrical connectors 10 may be attached to one jig 31, and four cylindrical connectors are respectively attached to the two jigs 31. 10 may be attached. The position of the recess 31b is previously formed at a position corresponding to the direction of the protrusion 16 of the cylindrical connector 10. Although not shown, a mounting portion for mounting the cylindrical connector 10 is formed at the bottom of the jig 31 so that the cylindrical connector 10 does not fall from the jig 31. Yes.

本体部9に複数の筒状コネクタ10を取付ける作業において、突起16を凹部31bに挿入しながら、筒状コネクタ10の外周面を湾曲部31aに当接させるようにして複数の筒状コネクタ10を治具31に取付ける。
次いで、治具31によって製造装置に固定された本体部9の下部に筒状コネクタ10を仮固定し、この仮固定した状態で図示しない溶接機によって筒状コネクタ10を本体部9に溶着する。次いで、筒状コネクタ10から治具31を引き抜くことにより、デリバリパイプ8の製造作業が終了する。なお、本実施形態の治具31の凹部31bは、凹部31bの内周面の一方の面31cが治具31の着脱方向Aと同一方向に形成されている。
In the operation of attaching the plurality of cylindrical connectors 10 to the main body 9, the plurality of cylindrical connectors 10 are arranged so that the outer peripheral surface of the cylindrical connector 10 is brought into contact with the curved portion 31 a while inserting the protrusions 16 into the recesses 31 b. Attach to the jig 31.
Next, the cylindrical connector 10 is temporarily fixed to the lower part of the main body 9 fixed to the manufacturing apparatus by the jig 31, and the cylindrical connector 10 is welded to the main body 9 by a welding machine (not shown) in the temporarily fixed state. Next, by pulling out the jig 31 from the cylindrical connector 10, the manufacturing operation of the delivery pipe 8 is completed. In addition, as for the recessed part 31b of the jig | tool 31 of this embodiment, one surface 31c of the internal peripheral surface of the recessed part 31b is formed in the same direction as the attachment / detachment direction A of the jig | tool 31. FIG.

一方、デリバリパイプ8に燃料噴射弁11を取付ける場合には、筒状コネクタ10に燃料噴射弁本体11Aの上部を係合させる。次いで、クリップ13によって燃料噴射弁11と筒状コネクタ10とを固定することにより、燃料噴射弁11を筒状コネクタ10の中心軸方向と回転方向とに位置決め固定する。そして、燃料噴射弁11の先端をシリンダヘッド5に形成された弁孔に挿入しつつ、デリバリパイプ8をボルト4によってシリンダヘッド5に固定する。   On the other hand, when attaching the fuel injection valve 11 to the delivery pipe 8, the upper part of the fuel injection valve main body 11 </ b> A is engaged with the cylindrical connector 10. Next, the fuel injection valve 11 and the cylindrical connector 10 are fixed by the clip 13, whereby the fuel injection valve 11 is positioned and fixed in the central axis direction and the rotation direction of the cylindrical connector 10. Then, the delivery pipe 8 is fixed to the cylinder head 5 with the bolt 4 while the tip of the fuel injection valve 11 is inserted into the valve hole formed in the cylinder head 5.

以上のように、本実施形態の筒状コネクタ10の突起16は、筒状コネクタ10に外接する円弧16Aと、円弧16Aの端点21、22から互いに交差する方向に直線的に延在する一対の斜辺16B、16Cとを有し、筒状コネクタ10の中心軸23を通り気筒列方向と直交する方向に延在する直線を基準線24とした場合に、筒状コネクタ10の円弧16Aが基準線24に対して非対称となるように突起16が筒状コネクタ10に配置され、突起15、16に係合する係合溝13dを有するクリップ13によって、筒状コネクタ10の中心軸回りに回転しないように燃料噴射弁11が筒状コネクタ10に連結される。このため、燃料噴射弁11をその中心軸回りの回転方向の所望の位置に位置決めすることができる。   As described above, the projection 16 of the cylindrical connector 10 of the present embodiment has a pair of arcs 16A circumscribing the cylindrical connector 10 and linearly extending from the end points 21 and 22 of the arc 16A in a direction intersecting with each other. When the reference line 24 is a straight line having the oblique sides 16B and 16C and extending in the direction orthogonal to the cylinder row direction through the central axis 23 of the cylindrical connector 10, the arc 16A of the cylindrical connector 10 is the reference line. The protrusion 16 is disposed on the tubular connector 10 so as to be asymmetric with respect to the protrusion 24, and the clip 13 having the engaging groove 13 d that engages with the protrusions 15, 16 does not rotate around the central axis of the tubular connector 10. The fuel injection valve 11 is connected to the cylindrical connector 10. For this reason, the fuel injection valve 11 can be positioned at a desired position in the rotational direction around the central axis.

また、筒状コネクタ10の突起16が、突起16の斜辺16B、16Cが円弧16Aの端点21、22を通り、基準線24と平行な2本の仮想線26、27の間の領域に配置されるので、筒状コネクタ10を本体部9に仮固定するための治具31を筒状コネクタ10に着脱する際に、突起16が治具31の凹部31bに引っ掛かることを防止することができる。   Further, the projection 16 of the cylindrical connector 10 is arranged in a region between two virtual lines 26 and 27 parallel to the reference line 24 through the oblique sides 16B and 16C of the projection 16 passing through the end points 21 and 22 of the arc 16A. Therefore, when the jig 31 for temporarily fixing the cylindrical connector 10 to the main body portion 9 is attached to or detached from the cylindrical connector 10, the protrusion 16 can be prevented from being caught by the recess 31 b of the jig 31.

このため、従来のように複雑な構成の治具や多数の治具を用いることなく、筒状コネクタ10を本体部9に容易に溶着することができ、デリバリパイプ8の製造作業の作業性を向上させることができる。
また、本実施形態の筒状コネクタ10は、同一の気筒に2つ設けられ、同一の気筒に設けられた突起16の少なくとも1つが、基準線24に対して隣接する筒状コネクタ10側に傾くように構成されるので、気筒列方向に短い間隔で筒状コネクタ10が本体部9に取付けられる場合に、多数の筒状コネクタ10を治具31によって本体部9に仮固定する必要がある。なお、同一の気筒に設けられた突起16のそれぞれが基準線24に対して隣接する筒状コネクタ10側に傾くように構成されてもよい。
For this reason, the cylindrical connector 10 can be easily welded to the main body portion 9 without using a jig having a complicated structure or a large number of jigs as in the prior art, and the workability of manufacturing the delivery pipe 8 is improved. Can be improved.
In addition, two cylindrical connectors 10 of the present embodiment are provided in the same cylinder, and at least one of the protrusions 16 provided in the same cylinder is inclined toward the adjacent cylindrical connector 10 with respect to the reference line 24. Thus, when the cylindrical connector 10 is attached to the main body 9 at short intervals in the cylinder row direction, it is necessary to temporarily fix a large number of the cylindrical connectors 10 to the main body 9 with the jig 31. Note that each of the protrusions 16 provided in the same cylinder may be configured to be inclined toward the cylindrical connector 10 adjacent to the reference line 24.

本実施形態の筒状コネクタ10は、このように同一の気筒に2つ設けられ、同一の気筒に設けられた突起16の少なくとも1つが、基準線24に対して隣接する筒状コネクタ10側に傾くように構成される場合であっても、燃料噴射弁11をその中心軸回りの回転方向の所望の位置に位置決めすることができるとともに、治具31を筒状コネクタ10に着脱する際に、突起16が治具31の凹部31bに引っ掛かることを防止することができる。このため、筒状コネクタ10を本体部9に容易に溶着することができ、デリバリパイプ8の製造作業の作業性を向上させることができる。   Two cylindrical connectors 10 of the present embodiment are provided in the same cylinder in this way, and at least one of the protrusions 16 provided in the same cylinder is on the side of the cylindrical connector 10 adjacent to the reference line 24. Even when configured to tilt, the fuel injection valve 11 can be positioned at a desired position in the rotational direction around its central axis, and when the jig 31 is attached to or detached from the cylindrical connector 10, The protrusion 16 can be prevented from being caught in the recess 31 b of the jig 31. For this reason, the cylindrical connector 10 can be easily welded to the main body 9, and the workability of the manufacturing operation of the delivery pipe 8 can be improved.

また、本実施形態の筒状コネクタ10の突起16は、斜辺16B、16Cが筒状コネクタ10の中心軸23と円弧16Aの二等分点を通る仮想線25に対して対称な三角形に形成される。このため、基準線24に対して円周方向の一方または円周方向の他方のいずれの方向に突起16を位置させた場合であっても、治具31を筒状コネクタ10に着脱する際に、本体部9に突起16が治具31の凹部31bに引っ掛かることを防止することができる。このため、筒状コネクタ10を本体部9に容易に溶着することができ、デリバリパイプ8の製造作業の作業性を向上させることができる。   Further, the projection 16 of the cylindrical connector 10 of the present embodiment is formed in a triangular shape that is symmetrical with respect to an imaginary line 25 in which the oblique sides 16B and 16C pass through the bisector of the central axis 23 of the cylindrical connector 10 and the arc 16A. The For this reason, even when the protrusion 16 is positioned in one of the circumferential directions or the other circumferential direction with respect to the reference line 24, when the jig 31 is attached to or detached from the cylindrical connector 10, Thus, the protrusion 16 can be prevented from being caught in the recess 31 b of the jig 31 on the main body 9. For this reason, the cylindrical connector 10 can be easily welded to the main body 9, and the workability of the manufacturing operation of the delivery pipe 8 can be improved.

なお、本実施形態の突起16は、三角形に形成されるが、図12に示すように突起41が台形に形成されてもよい。具体的には、筒状コネクタ10の外周部に形成された第2の突起としての突起41を、斜辺41B、41Cが筒状コネクタ10の中心軸23と円弧41Aの二等分点を通る仮想線25に対して対称な台形に形成してもよい。   In addition, although the protrusion 16 of this embodiment is formed in a triangle, as shown in FIG. 12, the protrusion 41 may be formed in a trapezoid. Specifically, the protrusion 41 as the second protrusion formed on the outer peripheral portion of the cylindrical connector 10 is assumed to have a hypothetical side 41B, 41C, the virtual axis passing through the bisector between the central axis 23 of the cylindrical connector 10 and the arc 41A. A trapezoidal shape symmetrical to the line 25 may be formed.

また、図13に示すように突起42が山形に形成されてもよい。具体的には、筒状コネクタ10の外周部に形成された第2の突起としての突起42を、斜辺42B、42Cが筒状コネクタ10の中心軸23と円弧42Aの二等分点を通る仮想線25に対して対称な山形に形成してもよい。   Further, as shown in FIG. 13, the protrusion 42 may be formed in a mountain shape. Specifically, the projection 42 as the second projection formed on the outer peripheral portion of the cylindrical connector 10 is hypothesized that the hypotenuses 42B and 42C pass through the bisector of the central axis 23 of the cylindrical connector 10 and the arc 42A. You may form the mountain shape symmetrical with respect to the line 25. FIG.

また、本実施形態の筒状コネクタ10および燃料噴射弁11は、気筒毎に2つ設けられているが、図14に示すように、筒状コネクタ10および燃料噴射弁11が気筒毎に1つずつ設けられているように構成されてもよい。
この場合にも図15に示すように、筒状コネクタ10を本体部9に仮固定した後、筒状コネクタ10を本体部に溶着して治具31を筒状コネクタ10から引き抜くときに、突起16が治具31の凹部31bに引っ掛かることを防止することができる。
Further, two cylindrical connectors 10 and fuel injection valves 11 of this embodiment are provided for each cylinder, but as shown in FIG. 14, one cylindrical connector 10 and one fuel injection valve 11 are provided for each cylinder. You may comprise so that it may be provided one by one.
Also in this case, as shown in FIG. 15, when the cylindrical connector 10 is temporarily fixed to the main body portion 9, the cylindrical connector 10 is welded to the main body portion, and the jig 31 is pulled out from the cylindrical connector 10. 16 can be prevented from being caught in the recess 31 b of the jig 31.

このため、従来のように複雑な構成の治具や多数の治具を用いることなく、異なる方向に向いた突起16を有する筒状コネクタ10から治具を容易に引き抜くことができ、筒状コネクタ10を本体部9に容易に溶着することができる。したがって、デリバリパイプ8の製造作業の作業性を向上させることができる。   Therefore, the jig can be easily pulled out from the cylindrical connector 10 having the protrusions 16 facing in different directions without using a jig having a complicated configuration or a large number of jigs as in the prior art. 10 can be easily welded to the main body 9. Therefore, the workability of the manufacturing operation of the delivery pipe 8 can be improved.

本発明の実施形態を開示したが、当業者によっては本発明の範囲を逸脱することなく変更が加えられうることは明白である。すべてのこのような修正及び等価物が次の請求項に含まれることが意図されている。   While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

8…デリバリパイプ、9…本体部、10…筒状コネクタ、11…燃料噴射弁、13…クリップ(回転規制部材)、13d…(係合部)、15…突起(第1の突起)、16,41,42…突起(第2の突起)、16A,41A,42A…円弧、16B,16C、41B,41C,42B,42C…斜辺、21,22…端点、23…中心軸、24…基準線、25、26…仮想線、31…治具、31b…凹部   DESCRIPTION OF SYMBOLS 8 ... Delivery pipe, 9 ... Main-body part, 10 ... Cylindrical connector, 11 ... Fuel injection valve, 13 ... Clip (rotation restricting member), 13d ... (engagement part), 15 ... Protrusion (1st protrusion), 16 , 41, 42 ... projection (second projection), 16A, 41A, 42A ... arc, 16B, 16C, 41B, 41C, 42B, 42C ... hypotenuse, 21, 22 ... end point, 23 ... central axis, 24 ... reference line , 25, 26 ... virtual line, 31 ... jig, 31b ... concave portion

Claims (3)

内燃機関の気筒列方向に延在する本体部と、前記本体部に前記気筒列方向に沿って設けられ、外周部に第1の突起が形成された複数の燃料噴射弁が連結される複数の筒状コネクタと、前記筒状コネクタの外周部に形成された第2の突起とを含んで構成され、
前記第2の突起に係合する凹部を有する治具によって少なくとも1組の隣接する筒状コネクタにおいて前記第2の突起が異なる方向に向くように、前記筒状コネクタが前記本体部に仮固定された後に、前記筒状コネクタと前記本体部とが溶着され、前記第1の突起および前記第2の突起が前記筒状コネクタの中心軸方向に重なるように前記第1の突起および前記第2の突起に係合する係合部を有する回転規制部材によって、前記筒状コネクタの中心軸回りに回転しないように前記燃料噴射弁が前記筒状コネクタに連結されるデリバリパイプであって、
前記第2の突起が、前記筒状コネクタに外接する円弧と、前記円弧の端点から互いに交差する方向に直線的に延在する一対の斜辺とを有し、
前記筒状コネクタの中心軸を通り前記気筒列方向と直交する方向に延在する直線を基準線とした場合に、前記筒状コネクタの円弧が前記基準線に対して非対称となるように前記第2の突起が前記筒状コネクタに配置され、かつ、前記第2の突起の斜辺が、前記円弧の各端点を通り、前記基準線と平行な2本の仮想線の間の領域に配置されることを特徴とするデリバリパイプ。
A main body portion extending in the cylinder row direction of the internal combustion engine, and a plurality of fuel injection valves provided in the main body portion along the cylinder row direction and having a first protrusion formed on the outer peripheral portion. Comprising a cylindrical connector and a second protrusion formed on the outer periphery of the cylindrical connector;
The cylindrical connector is temporarily fixed to the main body so that the second protrusion faces in a different direction in at least one pair of adjacent cylindrical connectors by a jig having a recess that engages with the second protrusion. After that, the cylindrical connector and the main body are welded, and the first protrusion and the second protrusion are arranged such that the first protrusion and the second protrusion overlap in the central axis direction of the cylindrical connector. A delivery pipe in which the fuel injection valve is coupled to the cylindrical connector so as not to rotate around a central axis of the cylindrical connector by a rotation restricting member having an engaging portion that engages with a protrusion ;
The second protrusion has an arc circumscribing the cylindrical connector and a pair of hypotenuses extending linearly in directions intersecting with each other from end points of the arc;
When the straight line passing through the central axis of the cylindrical connector and extending in the direction orthogonal to the cylinder row direction is used as a reference line, the circular arc of the cylindrical connector is asymmetric with respect to the reference line. 2 projections are arranged on the cylindrical connector, and the hypotenuse of the second projection passes through each end point of the arc and is arranged in a region between two imaginary lines parallel to the reference line. A delivery pipe characterized by that.
前記筒状コネクタが、同一の前記気筒に2つ設けられ、同一の前記気筒に設けられた前
記第2の突起の少なくとも1つが、前記基準線に対して隣接する前記筒状コネクタ側に傾
くことを特徴とする請求項1に記載のデリバリパイプ。
Two cylindrical connectors are provided in the same cylinder, and at least one of the second protrusions provided in the same cylinder is inclined toward the cylindrical connector adjacent to the reference line. The delivery pipe according to claim 1.
前記第2の突起は、前記斜辺が前記筒状コネクタの中心軸と前記円弧の二等分点を通る
仮想線に対して対称な三角形または台形に形成されることを特徴とする請求項1または請
求項2に記載のデリバリパイプ。
The second protrusion is formed in a triangular or trapezoidal shape in which the hypotenuse is symmetrical with respect to an imaginary line passing through a bisection point between the central axis of the cylindrical connector and the arc. The delivery pipe according to claim 2.
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DE102014211136B4 (en) 2023-09-21
CN104234896B (en) 2016-11-16
DE102014211136A1 (en) 2014-12-18
JP2015001224A (en) 2015-01-05

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