JP6586214B1 - Fuel supply device - Google Patents

Fuel supply device Download PDF

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JP6586214B1
JP6586214B1 JP2018207845A JP2018207845A JP6586214B1 JP 6586214 B1 JP6586214 B1 JP 6586214B1 JP 2018207845 A JP2018207845 A JP 2018207845A JP 2018207845 A JP2018207845 A JP 2018207845A JP 6586214 B1 JP6586214 B1 JP 6586214B1
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holding
housing
supply device
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敏彦 内藤
敏彦 内藤
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Keihin Corp
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Abstract

【課題】燃料供給装置においてシール部材の装着忘れを確実に検知すると同時に作動音の低減を図る。【解決手段】燃料供給装置10を構成するハウジング34には、その第2保持部40にプレッシャレギュレータ42の収納される収納部48を有し、該収納部48の第2保持筒部52には、径方向に貫通して収納室56と外部とを連通するリーク孔64が形成されると共に、前記第2保持筒部52の外周面には径方向外側へと突出した複数の第1及び第2リブ60、62が設けられている。また、リーク孔64は、収納部48の第1保持筒部50内に装着されたシール部材78とプレッシャレギュレータ42の圧入筒部86との間となる位置に開口している。【選択図】図3An object of the present invention is to reliably detect forgetting to attach a seal member in a fuel supply device and simultaneously reduce operating noise. A housing constituting a fuel supply apparatus has a storage portion in which a pressure regulator is stored in a second holding portion, and the second holding cylinder portion of the storage portion includes a storage portion. In addition, a leak hole 64 that penetrates in the radial direction and communicates between the storage chamber 56 and the outside is formed, and a plurality of first and first protrusions projecting radially outward are formed on the outer peripheral surface of the second holding cylinder portion 52. Two ribs 60 and 62 are provided. The leak hole 64 opens at a position between the seal member 78 mounted in the first holding cylinder part 50 of the storage part 48 and the press-fitting cylinder part 86 of the pressure regulator 42. [Selection] Figure 3

Description

本発明は、車両の燃料タンクから内燃機関へと燃料を供給するための燃料供給装置に関する。   The present invention relates to a fuel supply device for supplying fuel from a fuel tank of a vehicle to an internal combustion engine.

本出願人は、鞍乗り型車両に搭載された燃料タンク内の燃料を燃料ポンプで吸い込んで加圧した後、吐出することで内燃機関へと供給する燃料供給装置を提案している(特許文献1参照)。   The present applicant has proposed a fuel supply device that supplies fuel to an internal combustion engine by sucking and pressurizing fuel in a fuel tank mounted on a saddle-ride type vehicle with a fuel pump (Patent Document). 1).

この燃料供給装置は、取り付けベース部材と、該取り付けベース部材に装着され燃料タンク内の燃料を吸い上げて燃料取り出し管へと送出する電動ポンプと、余剰となった燃料を燃料タンク側へと排出するレギュレータ弁とを備え、前記取り付けベース部材には、前記燃料取り出し管と連通し前記レギュレータ弁の弁筒を嵌合保持するガイド孔と、該ガイド孔に連なり前記弁筒の一部が圧入される保持筒とを有している。   This fuel supply device includes an attachment base member, an electric pump that is attached to the attachment base member and sucks up the fuel in the fuel tank and delivers it to a fuel take-out pipe, and discharges excess fuel to the fuel tank side. A regulator valve, and a guide hole for fitting and holding the valve cylinder of the regulator valve in communication with the fuel take-off pipe, and a part of the valve cylinder connected to the guide hole is press-fitted into the mounting base member. And a holding cylinder.

この弁筒は、シール部材を介してガイド孔に嵌合するガイド筒部と、保持筒の内周面に圧入される圧入筒部とを備え、前記保持筒の内周面には、ガイド筒部の外周面との間に軸方向に沿って延在し外部へと開放されたリーク溝が設けられている。   The valve cylinder includes a guide cylinder portion that fits into the guide hole via a seal member, and a press-fit cylinder portion that is press-fitted into the inner peripheral surface of the holding cylinder, and the guide cylinder is provided on the inner peripheral surface of the holding cylinder. A leak groove extending along the axial direction and opened to the outside is provided between the outer peripheral surface of the portion.

そして、上述した燃料供給装置の燃料漏れ検査を行う際、シール部材が未装着の状態では、レギュレータ弁の入口側の燃料がリーク溝を通じて外部へと流出することで前記シール部材の装着忘れを検知可能としている。   When performing the fuel leakage inspection of the fuel supply device described above, when the seal member is not installed, the fuel on the inlet side of the regulator valve flows out through the leak groove to detect that the seal member is forgotten to be installed. It is possible.

この構成では、圧入筒部の外周面と保持筒の内周面との一部がリーク溝によって非接触となるため、周方向に沿った全周で接触させて保持筒の剛性をさらに高め、レギュレータ弁の弁体が開閉した際に生じる振動に伴った作動音を低減したいという要請がある。   In this configuration, since a part of the outer peripheral surface of the press-fitted cylinder portion and the inner peripheral surface of the holding cylinder are not in contact by the leak groove, the rigidity of the holding cylinder is further increased by contacting the entire circumference along the circumferential direction, There is a demand to reduce the operating noise associated with the vibration that occurs when the valve body of the regulator valve opens and closes.

特開2009−235942号公報JP 2009-235942 A

本発明は、前記の提案に関連してなされたものであり、シール部材の装着忘れを確実に検知すると同時に作動音の低減を図ることが可能な燃料供給装置を提供することを目的とする。   The present invention has been made in connection with the above proposal, and an object of the present invention is to provide a fuel supply device that can reliably detect forgetting to attach a seal member and at the same time reduce the operating noise.

前記の目的を達成するために、本発明の態様は、燃料タンクに配置され、燃料タンク内の燃料を吸入して外部へと吐出する燃料ポンプと、燃料ポンプの吐出口が接続される燃料通路を有したハウジングと、ハウジングの内部に設けられ燃料通路内で余剰となった燃料を外部へと排出することで燃料の圧力を調整するレギュレータとを備えた燃料供給装置において、
ハウジングは、レギュレータにおける弁筒の少なくとも一部が圧入され保持される圧入保持部と、圧入保持部に対して燃料通路側に隣接して設けられた挿入保持部とを備え、
弁筒には、圧入保持部に圧入される第1弁筒部と、挿入保持部に対してシール部材を間にして挿入され、且つ、挿入保持部との間に間隙を有した第2弁筒部とを備え、
挿入保持部には、シール部材と圧入保持部との間となる位置にハウジングの内部と外部とを連通するリーク孔が形成される。
In order to achieve the above object, according to an aspect of the present invention, there is provided a fuel pump that is disposed in a fuel tank, sucks fuel in the fuel tank and discharges the fuel to the outside, and a fuel passage to which a discharge port of the fuel pump is connected. And a regulator that adjusts the pressure of the fuel by discharging the excess fuel in the fuel passage that is provided inside the housing to the outside,
The housing includes a press-fit holding portion in which at least a part of the valve cylinder in the regulator is press-fitted and held, and an insertion holding portion provided adjacent to the press-fit holding portion on the fuel passage side,
A second valve having a gap between the first valve cylinder portion to be press-fitted into the press-fit holding portion and a seal member with respect to the insertion holding portion and having a gap between the insertion and holding portion. A cylinder portion,
The insertion holding portion is formed with a leak hole that communicates the inside and the outside of the housing at a position between the seal member and the press-fit holding portion.

本発明によれば、燃料供給装置は、燃料通路内で余剰となった燃料を外部へと排出して燃料の圧力を調整するレギュレータをハウジング内に備え、このハウジングには、レギュレータにおける弁筒の少なくとも一部が圧入され保持される圧入保持部と、圧入保持部に対して燃料通路側に隣接し弁筒との間に間隙を有した挿入保持部とを備えている。一方、弁筒には、圧入保持部に圧入される第1弁筒部と、挿入保持部に対してシール部材を間にして挿入される第2弁筒部とを備え、ハウジングの内部と外部とを連通するリーク孔が、挿入保持部においてシール部材と圧入保持部との間となる位置に設けられている。   According to the present invention, the fuel supply device includes a regulator in the housing that discharges excess fuel in the fuel passage to the outside and adjusts the pressure of the fuel, and the housing includes a valve cylinder in the regulator. There are provided a press-fit holding part in which at least a part is press-fitted and held, and an insertion holding part adjacent to the press-fit holding part on the fuel passage side and having a gap between the valve cylinder. On the other hand, the valve cylinder includes a first valve cylinder portion that is press-fitted into the press-fit holding portion, and a second valve cylinder portion that is inserted into the insertion holding portion with a seal member interposed therebetween, and the inside and outside of the housing. Is provided at a position between the seal member and the press-fit holding portion in the insertion holding portion.

従って、燃料供給装置の組付けが完了した後に燃料の漏れを確認する際、シール部材を誤って装着し忘れている場合には、燃料通路側から供給された燃料がハウジングの挿入保持部と第2弁筒部との間の間隙を通じてリーク孔から外部へと流出することで、シール部材の装着忘れを容易且つ確実に検知することが可能となる。また、弁筒の第1弁筒部をハウジングの圧入保持部に対して全周で圧入することができるため、リーク溝によって全周での圧入が行われず一部が非接触であった従来の燃料供給装置と比較し、ハウジングの剛性を高めることができ、それに伴って、レギュレータの開閉動作時に生じる振動に起因した作動音を効果的に低減することができる。   Therefore, when checking for fuel leakage after the assembly of the fuel supply device is completed, if the seal member is forgotten to be installed by mistake, the fuel supplied from the fuel passage side is connected to the insertion holding portion of the housing. By flowing out from the leak hole through the gap between the two valve cylinder portions, it becomes possible to easily and reliably detect forgetting to attach the seal member. In addition, since the first valve cylinder portion of the valve cylinder can be press-fitted all around the press-fitting holding portion of the housing, the leak groove does not perform press-fitting on the entire circumference and a part thereof is non-contact. Compared with the fuel supply device, the rigidity of the housing can be increased, and accordingly, the operation noise caused by the vibration generated during the opening / closing operation of the regulator can be effectively reduced.

本発明によれば、以下の効果が得られる。   According to the present invention, the following effects can be obtained.

すなわち、組み付けの完了した燃料供給装置に対して燃料漏れを確認する際、誤ってシール部材を装着し忘れている場合でも、燃料通路側から供給された燃料がハウジングの挿入保持部と第2弁筒部との間の間隙を通じてリーク孔から外部へと流出することで、シール部材の装着忘れを容易且つ確実に検知することができる。また、弁筒の第1弁筒部をハウジングの圧入保持部に対して全周で圧入することで、リーク溝によって周方向の一部が非接触であった従来の燃料供給装置と比較し、ハウジングの剛性をより高めることができ、それに伴って、レギュレータの開閉動作時における作動音の低減を図ることが可能となる。   That is, when checking for fuel leakage with respect to the fuel supply device that has been assembled, even if the user forgets to attach the seal member by mistake, the fuel supplied from the fuel passage side is inserted into the housing insertion holding portion and the second valve. Forgetting to attach the seal member can be detected easily and reliably by flowing out from the leak hole to the outside through the gap between the cylinder portion. In addition, by press-fitting the first valve cylinder portion of the valve cylinder with respect to the press-fit holding portion of the housing all around, compared with a conventional fuel supply device in which a part in the circumferential direction is non-contact by the leak groove, The rigidity of the housing can be further increased, and accordingly, the operating noise during the opening / closing operation of the regulator can be reduced.

本発明の実施の形態に係る燃料供給装置の全体正面図である。1 is an overall front view of a fuel supply device according to an embodiment of the present invention. 図2Aは、図1に示す燃料供給装置の収納部近傍を示す拡大正面図であり、図2Bは、図2Aに示す収納部近傍の外観斜視図である。2A is an enlarged front view showing the vicinity of the storage section of the fuel supply device shown in FIG. 1, and FIG. 2B is an external perspective view of the vicinity of the storage section shown in FIG. 2A. 図3Aは、図2AのIIIA−IIIA線に沿った断面図であり、図3Bは、図3Aにおいてシール部材が装着されていない状態を示す断面図である。3A is a cross-sectional view taken along line IIIA-IIIA in FIG. 2A, and FIG. 3B is a cross-sectional view showing a state where the seal member is not mounted in FIG. 3A.

本発明に係る燃料供給装置について好適な実施の形態を挙げ、添付の図面を参照しながら以下詳細に説明する。図1において、参照符号10は、本発明の実施の形態に係る燃料供給装置を示す。   Preferred embodiments of the fuel supply apparatus according to the present invention will be described below and described in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a fuel supply apparatus according to an embodiment of the present invention.

この燃料供給装置10は、例えば、鞍乗り型車両である自動二輪車の燃料タンク12に搭載され、図1に示されるように、前記燃料タンク12の底壁12aに固定される蓋部材14と、該蓋部材14に設けられ燃料ポンプ16を含んだポンプモジュール18と、該ポンプモジュール18の端部に接続されるフィルタ20とを含む。   The fuel supply device 10 is mounted on, for example, a fuel tank 12 of a motorcycle that is a saddle-ride type vehicle, and as shown in FIG. 1, a lid member 14 fixed to the bottom wall 12a of the fuel tank 12, It includes a pump module 18 provided on the lid member 14 and including a fuel pump 16, and a filter 20 connected to an end of the pump module 18.

蓋部材14は、例えば、燃料タンク12のタンク開口を覆うベース部22と、該ベース部22の上面から上方へと突出したホルダ部24と、該ホルダ部24と隣接した端子接続部26と、前記ベース部22の下面側に設けられたコネクタ部28及び吐出部30とを含む。   The lid member 14 includes, for example, a base portion 22 that covers the tank opening of the fuel tank 12, a holder portion 24 that protrudes upward from the upper surface of the base portion 22, a terminal connection portion 26 adjacent to the holder portion 24, The connector part 28 and the discharge part 30 provided on the lower surface side of the base part 22 are included.

ベース部22は、例えば、一定厚さの板状に形成され、車両の前後方向となる長手方向(矢印A、B方向)に沿って長尺な長円状に形成され、その上面が燃料タンク12の底壁12aの外側に当接するように設けられる。   The base portion 22 is formed, for example, in a plate shape with a constant thickness, and is formed in a long oval shape along the longitudinal direction (arrow A, B direction) that is the front-rear direction of the vehicle, and the upper surface thereof is a fuel tank. 12 is provided so as to contact the outside of the bottom wall 12a.

端子接続部26には、後述する燃料ポンプ16に接続されたリード線32が電気的に接続され、ベース部22を挟んでコネクタ部28と接続されている。そして、図示しないコントローラに接続されたカプラ(図示せず)がコネクタ部28へと接続されることで、燃料ポンプ16のリード線32及び端子接続部26に対して電気的に接続される。   A lead wire 32 connected to a fuel pump 16 to be described later is electrically connected to the terminal connection portion 26 and is connected to the connector portion 28 with the base portion 22 interposed therebetween. A coupler (not shown) connected to a controller (not shown) is connected to the connector portion 28, thereby being electrically connected to the lead wire 32 and the terminal connection portion 26 of the fuel pump 16.

吐出部30は、ベース部22の下面において、該ベース部22に対して略直交するように突出して図示しない燃料チューブが接続される。   The discharge part 30 projects on the lower surface of the base part 22 so as to be substantially orthogonal to the base part 22 and is connected to a fuel tube (not shown).

そして、蓋部材14は、そのホルダ部24及び端子接続部26が燃料タンク12内に収納され、前記ベース部22、前記コネクタ部28及び吐出部30が前記燃料タンク12の外側となるように設けられ、ベース部22の外縁部が燃料タンク12の底壁12aに当接してタンク開口を閉塞した状態で図示しない固定ボルトによって固定される。   The lid member 14 is provided so that the holder portion 24 and the terminal connection portion 26 are accommodated in the fuel tank 12, and the base portion 22, the connector portion 28, and the discharge portion 30 are outside the fuel tank 12. The outer edge portion of the base portion 22 is fixed to a bottom wall 12a of the fuel tank 12 by a fixing bolt (not shown) in a state where the tank opening is closed.

ポンプモジュール18は、燃料タンク12の内部に収納され、その一端部が蓋部材14に対して保持されるハウジング34と、該ハウジング34の他端部に接続されるエンドブロック36と、前記ハウジング34に収納される燃料ポンプ16とを含み、前記ハウジング34と前記エンドブロック36とがスナップフィット機構(図示せず)によって互いに長手方向(矢印A、B方向)に連結される。   The pump module 18 is housed inside the fuel tank 12, a housing 34 having one end held against the lid member 14, an end block 36 connected to the other end of the housing 34, and the housing 34. The housing 34 and the end block 36 are connected to each other in the longitudinal direction (arrow A, B direction) by a snap fit mechanism (not shown).

ハウジング34は、例えば、樹脂製材料から形成され、長手方向(矢印A、B方向)に沿って互いに平行に延在する第1及び第2保持部38、40を有し、前記第1保持部38には燃料ポンプ16がベース部22と平行に保持され、第2保持部40は、第1保持部38の上部に設けられプレッシャレギュレータ(レギュレータ)42が収納されている。そして、ハウジング34は、第1保持部38の一端部が、蓋部材14と略平行となるように該蓋部材14のホルダ部24に対して接続されている。   The housing 34 includes, for example, first and second holding portions 38 and 40 that are made of a resin material and extend in parallel with each other along the longitudinal direction (the directions of arrows A and B). The fuel pump 16 is held in parallel with the base portion 22, and the second holding portion 40 is provided on the upper portion of the first holding portion 38 and stores a pressure regulator (regulator) 42. The housing 34 is connected to the holder portion 24 of the lid member 14 so that one end portion of the first holding portion 38 is substantially parallel to the lid member 14.

第1保持部38の内部には、長手方向(矢印A、B方向)に沿って第1燃料通路44が形成され、その一端部が後述する第3燃料通路100と連通している。   A first fuel passage 44 is formed in the first holding portion 38 along the longitudinal direction (directions of arrows A and B), and one end portion thereof communicates with a third fuel passage 100 described later.

燃料ポンプ16は、例えば、ブラシレスモータが採用され、その軸線が蓋部材14のベース部22と略平行となるようにハウジング34の第1保持部38に対して略平行に保持される。また、燃料ポンプ16は、燃料を供給する吸入口16a側がエンドブロック36の吸入通路102と接続され、前記燃料を吐出する吐出口16b側がハウジング34の第1燃料通路44と接続されている。   The fuel pump 16 is, for example, a brushless motor, and is held substantially parallel to the first holding portion 38 of the housing 34 so that the axis thereof is substantially parallel to the base portion 22 of the lid member 14. The fuel pump 16 is connected to the suction passage 102 of the end block 36 on the suction port 16 a side for supplying fuel, and connected to the first fuel passage 44 of the housing 34 on the discharge port 16 b side for discharging the fuel.

そして、燃料ポンプ16は、図示しないモータ部に接続された複数のリード線32が外部へと取り出されて蓋部材14の端子接続部26に対して電気的に接続され、図示しないコントローラからコネクタ部28及び端子接続部26へと入力される制御信号に基づいて駆動制御される。   The fuel pump 16 has a plurality of lead wires 32 connected to a motor unit (not shown) taken out to the outside and electrically connected to the terminal connection part 26 of the lid member 14. Drive control is performed based on control signals input to the terminal 28 and the terminal connection unit 26.

第2保持部40は、その内部に長手方向(矢印A、B方向)に沿って延在する第2燃料通路46を有し、この第2燃料通路46の一端部が、第1及び第2保持部38、40の一端部側において上下方向に延在する第3燃料通路100と接続され連通している。   The second holding portion 40 has a second fuel passage 46 extending in the longitudinal direction (the directions of arrows A and B) therein, and one end portion of the second fuel passage 46 has first and second ends. The holding portions 38 and 40 are connected to and communicate with a third fuel passage 100 extending in the vertical direction on one end side of the holding portions 38 and 40.

また、図1〜図3Bに示されるように、第2保持部40の他端部にはプレッシャレギュレータ42の収納される収納部48が設けられる。   As shown in FIGS. 1 to 3B, a storage portion 48 for storing the pressure regulator 42 is provided at the other end of the second holding portion 40.

この収納部48は、長手方向(矢印A、B方向)に沿って延在する略円筒状に形成され、第2燃料通路46側(矢印B方向)に形成されて接続される第1保持筒部(挿入保持部)50と、該第1保持筒部50と隣接して径方向外側へと拡径した第2保持筒部52と、該第2保持筒部52に隣接した他端部側(矢印A方向)に形成される加締部54とを有し、これらの内部が第2燃料通路46と連通しプレッシャレギュレータ42の収納される収納室56となる。   The storage portion 48 is formed in a substantially cylindrical shape extending along the longitudinal direction (arrows A and B directions), and is formed on the second fuel passage 46 side (arrow B direction) and connected thereto. Part (insertion holding part) 50, second holding cylinder part 52 that is adjacent to the first holding cylinder part 50 and has a diameter increased radially outward, and the other end side adjacent to the second holding cylinder part 52 And a caulking portion 54 formed in the direction of arrow A, and the inside of the caulking portion 54 communicates with the second fuel passage 46 and serves as a storage chamber 56 in which the pressure regulator 42 is stored.

第1保持筒部50の内周面は、第2燃料通路46に対して段付状となるように拡径し略一定径で延在している。そして、第1保持筒部50の内周面は、他端部側に向かって徐々に拡径し、第2保持筒部52の内周面へと接続されている。この第2保持筒部52の内周面は、長手方向に沿って略一定径で形成されている。また、加締部54の内周面は、第2保持筒部52の内周面に対してさらに若干だけ大径となるように形成される。   The inner peripheral surface of the first holding cylinder portion 50 is enlarged in diameter so as to be stepped with respect to the second fuel passage 46 and extends with a substantially constant diameter. The inner peripheral surface of the first holding cylinder portion 50 gradually increases in diameter toward the other end side and is connected to the inner peripheral surface of the second holding cylinder portion 52. The inner peripheral surface of the second holding cylinder portion 52 is formed with a substantially constant diameter along the longitudinal direction. Further, the inner peripheral surface of the caulking portion 54 is formed to have a slightly larger diameter than the inner peripheral surface of the second holding cylinder portion 52.

一方、収納部48の外周面は、第2保持筒部52が最も径方向外側となり、第1保持筒部50と加締部54とが略同一径となるように形成されている。   On the other hand, the outer peripheral surface of the storage portion 48 is formed such that the second holding cylinder portion 52 is the outermost in the radial direction, and the first holding cylinder portion 50 and the caulking portion 54 have substantially the same diameter.

この第2保持筒部52の外周面には、径方向外側に向かって環状に突出した複数の第1リブ(第1リブ部)60と、複数の第1リブ60を互いに接続する複数の第2リブ(第2リブ部)62とを備えている。第1リブ60は、例えば、収納部48の長手方向(矢印A、B方向)と直交するように突出し該長手方向に沿って互いに等間隔離間し、第2リブ62は前記長手方向に沿って延在すると共に、第2保持筒部52の周方向に沿って互いに等間隔離間して形成される。すなわち、第2保持筒部52の外周面において、第1リブ60と第2リブ62とが交差状に形成されている。   On the outer peripheral surface of the second holding cylinder portion 52, a plurality of first ribs (first rib portions) 60 projecting annularly outward in the radial direction and a plurality of first ribs 60 connecting the plurality of first ribs 60 to each other are provided. 2 ribs (second rib portions) 62. For example, the first ribs 60 project so as to be orthogonal to the longitudinal direction (arrows A and B directions) of the storage portion 48 and are spaced apart from each other along the longitudinal direction, and the second ribs 62 extend along the longitudinal direction. In addition to extending, the second holding cylinder part 52 is formed at equal intervals along the circumferential direction. That is, the first rib 60 and the second rib 62 are formed in an intersecting manner on the outer peripheral surface of the second holding cylinder portion 52.

なお、ここでは、第1及び第2リブ60、62をそれぞれ3つずつ備える場合について説明する。   Here, a case where three each of the first and second ribs 60 and 62 are provided will be described.

また、第2保持筒部52の外周面には、その一端部側(矢印B方向)に形成された第1リブ60と他端部側に隣接した第1リブ60との間にリーク孔64が開口している。リーク孔64は、第2保持筒部52の長手方向(矢印A、B方向)と直交する径方向に貫通し収納室56と外部とを連通させると共に、後述するプレッシャレギュレータ42の弁ハウジング66に臨む位置に開口している。   Further, a leak hole 64 is formed between the first rib 60 formed on one end side (in the direction of arrow B) and the first rib 60 adjacent to the other end side on the outer peripheral surface of the second holding cylinder portion 52. Is open. The leak hole 64 penetrates in the radial direction orthogonal to the longitudinal direction (arrow A, B direction) of the second holding cylinder portion 52 to communicate the storage chamber 56 with the outside, and to the valve housing 66 of the pressure regulator 42 described later. It opens to the position where it faces.

プレッシャレギュレータ42は、第2保持部40の収納室56に収納され、図3Aに示されるように、円筒状に形成された弁ハウジング(弁筒)66と、該弁ハウジング66の一端部に設けられる弁座部材(弁筒)68と、前記弁座部材68の弁路70に着座する弁体72と、前記弁体72に当接して押圧するリテーナ74と、前記リテーナ74を前記弁座部材68側(矢印B方向)に向かって付勢するばね76と、前記弁ハウジング66の一端部側(矢印B方向)に装着されるシール部材78とから構成される。   The pressure regulator 42 is housed in the housing chamber 56 of the second holding unit 40, and as shown in FIG. 3A, is provided in a cylindrical valve housing (valve) 66 and one end of the valve housing 66. A valve seat member (valve) 68, a valve body 72 seated on a valve passage 70 of the valve seat member 68, a retainer 74 that contacts and presses the valve body 72, and the retainer 74 is connected to the valve seat member. The spring 76 is biased toward the 68 side (arrow B direction), and a seal member 78 is mounted on one end side (arrow B direction) of the valve housing 66.

弁ハウジング66は、その他端部側(矢印A方向)に底部80を有した有底円筒状に形成され、一端部側に形成される先細部82と、該先細部82に隣接して外周面が拡径した挿入筒部(第2弁筒部)84と、該挿入筒部84と隣接し他端部側(矢印A方向)に形成された圧入筒部(第1弁筒部)86とを有し、前記圧入筒部86は前記挿入筒部84に対して若干だけ外周面が大径となるように形成されると共に、その他端部が底部80と略直交するように接合されている。   The valve housing 66 is formed in a bottomed cylindrical shape having a bottom portion 80 on the other end side (in the direction of arrow A), a tapered portion 82 formed on one end portion side, and an outer peripheral surface adjacent to the tapered portion 82. An insertion cylinder part (second valve cylinder part) 84 having a diameter increased, and a press-fitting cylinder part (first valve cylinder part) 86 adjacent to the insertion cylinder part 84 and formed on the other end side (arrow A direction), The press-fit cylinder part 86 is formed so that the outer peripheral surface is slightly larger in diameter than the insertion cylinder part 84, and the other end part is joined so as to be substantially orthogonal to the bottom part 80. .

この底部80の中央には、後述するリテーナ74の軸部98が挿入される軸孔88が貫通すると共に、該軸孔88の径方向外側には複数の排出孔90が貫通するように形成される。   A shaft hole 88 into which a shaft portion 98 of a retainer 74 (described later) is inserted passes through the center of the bottom portion 80, and a plurality of discharge holes 90 are formed on the radially outer side of the shaft hole 88. The

そして、弁ハウジング66は、その先細部82が収納部48における第1保持筒部50の内周面に臨み、挿入筒部84が第2保持筒部52の内周面に臨み、圧入筒部86が前記第2保持筒部52の内周面の一部に対して圧入されると共に加締部54の内周面に臨むように設けられ、先細部82と第1保持筒部50との間、挿入筒部84と第2保持筒部52の内周面との間にはそれぞれ間隙92a、92bが形成される。   The valve housing 66 has a tip 82 facing the inner peripheral surface of the first holding cylinder portion 50 in the storage portion 48, and an insertion cylinder portion 84 facing the inner peripheral surface of the second holding cylinder portion 52. 86 is press-fitted into a part of the inner peripheral surface of the second holding cylinder portion 52 and is provided so as to face the inner peripheral surface of the crimping portion 54. In the meantime, gaps 92a and 92b are formed between the insertion tube portion 84 and the inner peripheral surface of the second holding tube portion 52, respectively.

この弁ハウジング66は、圧入筒部86が第2保持部40の第2保持筒部52に対して圧入されることで同軸上に保持され、先細部82及び挿入筒部84は、第1及び第2保持筒部50、52に対して間隙92a、92bを有した状態で挿入されることで、該間隙92aと間隙92bとリーク孔64とが連通する。   The valve housing 66 is held coaxially by press-fitting the press-fit cylinder part 86 into the second holding cylinder part 52 of the second holding part 40, and the tapered part 82 and the insertion cylinder part 84 are the first and The gap 92a, the gap 92b, and the leak hole 64 communicate with each other by being inserted into the second holding cylinder portions 50, 52 with the gaps 92a, 92b.

また、弁ハウジング66は、加締部54の他端部が図示しない治具によって径方向内側に折曲するように加締められることで、圧入筒部86の他端部が加締部54の他端部によって長手方向に係止される。なお、この加締部54の加締めには、例えば、加熱によって折曲させる熱かしめが用いられる。   Further, the valve housing 66 is crimped so that the other end of the crimping portion 54 is bent inward in the radial direction by a jig (not shown), so that the other end of the press-fit cylinder 86 is connected to the crimping portion 54. The other end is locked in the longitudinal direction. The caulking portion 54 is caulked using, for example, heat caulking that is bent by heating.

弁座部材68は、略一定径で形成された円筒体からなり、その中央には軸方向(矢印A、B方向)に沿って弁路70が貫通し、第2保持部40の内部において一端部が第2燃料通路46に臨み、他端部が挿入筒部84の一端部近傍の内周面に対して圧入されることで、弁ハウジング66に対して所定長さだけ一端部側へと突出した状態で同軸上に保持される。なお、弁座部材68は、先細部82に対しては圧入されることなく単に挿入されているだけとなる。   The valve seat member 68 is formed of a cylindrical body formed with a substantially constant diameter. The valve passage 70 passes through the center along the axial direction (directions of arrows A and B), and ends in the second holding portion 40. The portion faces the second fuel passage 46 and the other end is press-fitted into the inner peripheral surface in the vicinity of one end of the insertion tube portion 84, so that the valve housing 66 moves toward the one end by a predetermined length. It is held coaxially in a protruding state. The valve seat member 68 is merely inserted into the tapered portion 82 without being press-fitted.

また、弁座部材68の他端部中央には、弁路70の他端部となる位置に弁体72の着座する弁座94が形成される。この弁体72は、例えば、金属製材料からなる球体であり、弁座部材68の弁路70の直径よりも大きな直径で形成され、前記弁座部材68の弁座94へと着座することで前記弁路70の他端部を閉塞する。   In addition, a valve seat 94 on which the valve body 72 is seated is formed at a position to be the other end of the valve passage 70 at the center of the other end of the valve seat member 68. The valve body 72 is, for example, a sphere made of a metal material, is formed with a diameter larger than the diameter of the valve passage 70 of the valve seat member 68, and is seated on the valve seat 94 of the valve seat member 68. The other end of the valve passage 70 is closed.

リテーナ74は、例えば、断面略T字状に形成され、一端部側(矢印B方向)に形成され弁体72の一部に当接する当接部96と、該当接部96の中心から長手方向に沿って他端部側へと延在した軸部98とを有し、該軸部98が弁ハウジング66の軸孔88へと挿通された状態で、弁ハウジング66における挿入筒部84及び圧入筒部86の内部に移動自在に設けられる。そして、リテーナ74の当接部96と弁ハウジング66の底部80との間には、例えば、コイルスプリングからなるばね76が設けられ、前記リテーナ74を弁体72側(矢印B方向)に向かって付勢することで、弁体72が弁座部材68の弁座94に対して押圧された弁閉状態となる。   The retainer 74 is formed in, for example, a substantially T-shaped cross section, is formed on one end side (in the direction of arrow B) and contacts a part of the valve body 72, and the longitudinal direction from the center of the corresponding contact portion 96. A shaft portion 98 extending to the other end side of the valve housing 66 in a state where the shaft portion 98 is inserted into the shaft hole 88 of the valve housing 66 and the press fitting. It is movably provided inside the cylindrical portion 86. A spring 76 made of, for example, a coil spring is provided between the contact portion 96 of the retainer 74 and the bottom portion 80 of the valve housing 66, and the retainer 74 is directed toward the valve body 72 (in the direction of arrow B). By energizing, the valve body 72 is closed against the valve seat 94 of the valve seat member 68.

シール部材78は、例えば、弾性材料から形成されたОリングであり、弁ハウジング66の先細部82に臨み、且つ、弁座部材68の一端部外周側に当接し、且つ、第1保持筒部50の内周面に当接している。すなわち、シール部材78は、弁ハウジング66内において、第2保持部40の第1保持筒部50と弁座部材68との間を通じて第2燃料通路46の燃料が他端部側(矢印A方向)へと流入することを防止している。   The seal member 78 is, for example, an O-ring formed of an elastic material, faces the tapered portion 82 of the valve housing 66, contacts the outer peripheral side of one end portion of the valve seat member 68, and the first holding cylinder portion 50 is in contact with the inner peripheral surface. That is, in the valve member 66, the seal member 78 passes between the first holding cylinder portion 50 of the second holding portion 40 and the valve seat member 68 so that the fuel in the second fuel passage 46 is on the other end side (in the direction of arrow A). ).

そして、プレッシャレギュレータ42は、第2保持部40の第2燃料通路46から弁路70へと供給された燃料の圧力によって弁体72が弁座部材68から離間する方向(矢印A方向)へと押圧されることで、前記燃料が前記弁路70から弁ハウジング66の内部、排出孔90を通じて外部へと排出される。   Then, the pressure regulator 42 moves in a direction (arrow A direction) in which the valve body 72 is separated from the valve seat member 68 by the pressure of fuel supplied from the second fuel passage 46 of the second holding unit 40 to the valve passage 70. By being pressed, the fuel is discharged from the valve passage 70 to the inside of the valve housing 66 and the discharge hole 90.

このハウジング34は、その一端部側に第3燃料通路100が上下方向に延在し、その上端部が第2燃料通路46を通じてプレッシャレギュレータ42と連通し、下端部が蓋部材14のベース部22を介して吐出部30と接続されて連通すると共に、長手方向に沿った途中に第1燃料通路44が接続されて燃料ポンプ16の吐出口16bと連通している。   In the housing 34, the third fuel passage 100 extends in the vertical direction on one end portion side, the upper end portion communicates with the pressure regulator 42 through the second fuel passage 46, and the lower end portion is the base portion 22 of the lid member 14. The first fuel passage 44 is connected midway along the longitudinal direction to communicate with the discharge port 16 b of the fuel pump 16.

エンドブロック36は、ハウジング34の他端部を覆うように着脱自在に設けられ、その内部には後方側(矢印A方向)に向かって延在する吸入通路102が形成されている。   The end block 36 is detachably provided so as to cover the other end of the housing 34, and a suction passage 102 extending rearward (in the direction of arrow A) is formed therein.

フィルタ20は、燃料中に含まれる不純物等を除去する目的で設けられ、例えば、燃料供給装置10の長手方向(矢印A、B方向)に沿って設けられると共に厚さ寸法の小さな袋状に形成される。このフィルタ20には、エンドブロック36側となる一方の側面に図示しないアタッチメントを介して前記エンドブロック36の吸入通路102が接続され連通している。   The filter 20 is provided for the purpose of removing impurities contained in the fuel. For example, the filter 20 is provided along the longitudinal direction (arrow A, B direction) of the fuel supply device 10 and is formed in a bag shape with a small thickness. Is done. The suction path 102 of the end block 36 is connected to and communicated with the filter 20 via an attachment (not shown) on one side surface on the end block 36 side.

本発明の実施の形態に係る燃料供給装置10は、基本的には以上のように構成されるものであり、次に前記燃料供給装置10が組み付けられた状態でシール部材78の装着忘れを確認するための検査を行う場合について、図3A及び図3Bを参照しながら説明する。   The fuel supply device 10 according to the embodiment of the present invention is basically configured as described above, and then confirms that the seal member 78 is forgotten to be mounted in the state where the fuel supply device 10 is assembled. A case where an inspection for performing the inspection is performed will be described with reference to FIGS. 3A and 3B.

先ず、図3Bに示されるシール部材78(図中、二点鎖線形状参照)を装着し忘れて組み付けられた燃料供給装置10に対し、第2燃料通路46から収納室56へと燃料を供給する。この燃料は、シール部材78の設けられていない弁座部材68と第1保持筒部50との間を通じて他端部側(矢印A方向)へと流れた後に、弁ハウジング66の先細部82と第1保持筒部50の間の間隙92a、挿入筒部84と第2保持筒部52との間の間隙92bを通じて他端部側(矢印A方向)へと流れ、前記第2保持筒部52に開口したリーク孔64を通じて外部へと導出される。これにより、図示しない作業者が、リーク孔64から外部へと排出される燃料を確認することでシール部材78が装着されていないことを容易且つ確実に視認することができる。   First, fuel is supplied from the second fuel passage 46 to the storage chamber 56 to the fuel supply device 10 that has been forgotten to attach the seal member 78 (see the two-dot chain line shape in the drawing) shown in FIG. 3B. . The fuel flows between the valve seat member 68 without the seal member 78 and the first holding cylinder portion 50 to the other end side (in the direction of arrow A), and then the tip 82 of the valve housing 66 and It flows to the other end side (arrow A direction) through the gap 92a between the first holding cylinder part 50 and the gap 92b between the insertion cylinder part 84 and the second holding cylinder part 52, and the second holding cylinder part 52 It is led out to the outside through the leak hole 64 opened to the outside. Thereby, an operator (not shown) can easily and surely recognize that the seal member 78 is not mounted by checking the fuel discharged from the leak hole 64 to the outside.

一方、図3Aに示されるように、シール部材78が所定の位置に装着されている燃料供給装置10では、第2燃料通路46から収納室56へと燃料を供給すると、弁座部材68の外周と第1保持筒部50の内周面との間に設けられたシール部材78によって前記弁座部材68と前記収納部48との間を通じた燃料の他端部側への流入が確実に防止される。また、弁座部材68が弁ハウジング66の挿入筒部84に対して圧入されているため、前記弁座部材68と前記挿入筒部84との間を通じた燃料の流入も防止される。   On the other hand, as shown in FIG. 3A, in the fuel supply device 10 in which the seal member 78 is mounted at a predetermined position, when fuel is supplied from the second fuel passage 46 to the storage chamber 56, the outer periphery of the valve seat member 68. And a seal member 78 provided between the first holding cylinder portion 50 and the inner peripheral surface of the first holding cylinder portion 50 reliably prevent the fuel from flowing into the other end portion between the valve seat member 68 and the storage portion 48. Is done. Further, since the valve seat member 68 is press-fitted into the insertion tube portion 84 of the valve housing 66, the inflow of fuel through the valve seat member 68 and the insertion tube portion 84 is also prevented.

そのため、収納室56内に供給された燃料がリーク孔64から外部へと排出されることがなく、図示しない作業者が前記リーク孔64からの燃料の排出がないことを視認することで、シール部材78が所定の位置へと確実に装着されていることが確認される。   Therefore, the fuel supplied into the storage chamber 56 is not discharged from the leak hole 64 to the outside, and an operator (not shown) visually recognizes that the fuel is not discharged from the leak hole 64, thereby It is confirmed that the member 78 is securely attached to the predetermined position.

次に、上述したようにシール部材78の装着有無の確認がなされた燃料供給装置10の動作について説明する。   Next, the operation of the fuel supply apparatus 10 in which the presence / absence of the seal member 78 is confirmed as described above will be described.

先ず、図示しないコントローラからの制御信号が、蓋部材14のコネクタ部28及び端子接続部26を通じてリード線32から燃料ポンプ16へと入力されることで該燃料ポンプ16が駆動する。そして、燃料タンク12の内部に蓄えられた燃料が、フィルタ20を通過してアタッチメント、エンドブロック36の吸入通路102を通じて燃料ポンプ16の吸入口16aから内部へと吸入される。   First, a control signal from a controller (not shown) is input from the lead wire 32 to the fuel pump 16 through the connector portion 28 and the terminal connection portion 26 of the lid member 14 to drive the fuel pump 16. The fuel stored in the fuel tank 12 passes through the filter 20 and is sucked into the fuel pump 16 through the suction passage 102 of the attachment and end block 36 from the suction port 16a.

そして、燃料ポンプ16へと吸入された燃料は、その吐出口16bからハウジング34の第1燃料通路44へと吐出された後、第3燃料通路100を経て蓋部材14の吐出部30から燃料チューブ(図示せず)へと導出される。その後、燃料チューブを通じて内燃機関のインジェクタへと燃料が供給される。   The fuel sucked into the fuel pump 16 is discharged from the discharge port 16b to the first fuel passage 44 of the housing 34, and then passes through the third fuel passage 100 to the fuel tube from the discharge portion 30 of the lid member 14. (Not shown). Thereafter, fuel is supplied to the injector of the internal combustion engine through the fuel tube.

一方、第1燃料通路44から第3燃料通路100へと流れた燃料は、該第3燃料通路100から第2燃料通路46を通じて収納室56のプレッシャレギュレータ42へと供給され、このプレッシャレギュレータ42の弁体72が燃料の圧力によって弁座部材68の弁座94から離間して弁開することで、余剰となった前記燃料が弁路70から弁ハウジング66の内部へと流入して複数の排出孔90を通じて燃料タンク12内へと排出される。   On the other hand, the fuel flowing from the first fuel passage 44 to the third fuel passage 100 is supplied from the third fuel passage 100 to the pressure regulator 42 in the storage chamber 56 through the second fuel passage 46. When the valve body 72 is opened from the valve seat 94 of the valve seat member 68 by the pressure of the fuel, the surplus fuel flows into the valve housing 66 from the valve passage 70 and is discharged into a plurality of positions. It is discharged into the fuel tank 12 through the hole 90.

この際、第2保持部40の第1保持筒部50と弁座部材68との間に設けられたシール部材78によって、第2保持部40の収納部48とプレッシャレギュレータ42との間を通じた燃料の漏出が防止される。   At this time, the seal member 78 provided between the first holding cylinder portion 50 of the second holding portion 40 and the valve seat member 68 passes between the storage portion 48 of the second holding portion 40 and the pressure regulator 42. Fuel leakage is prevented.

以上のように、本実施の形態では、燃料供給装置10を構成するハウジング34に、第1及び第3燃料通路44、100内で余剰となった燃料を外部へと排出して前記燃料の圧力を調整するプレッシャレギュレータ42が設けられ、該プレッシャレギュレータ42の弁ハウジング66は、圧入筒部86がハウジング34の第2保持筒部52に対して圧入され、挿入筒部84が第1保持筒部50に対して間隙92a、92bを有した状態で挿入されている。また、ハウジング34内において第3燃料通路100側となる弁ハウジング66の先細部82と第1保持筒部50との間にシール部材78が設けられると共に、第2保持筒部52において前記シール部材78と圧入筒部86との間には、収納室56と外部とを連通するリーク孔64が開口している。   As described above, in the present embodiment, surplus fuel in the first and third fuel passages 44 and 100 is discharged to the housing 34 constituting the fuel supply apparatus 10 to the outside and the pressure of the fuel is increased. A pressure regulator 42 is provided. In the valve housing 66 of the pressure regulator 42, the press-fit cylinder 86 is press-fitted into the second holding cylinder 52 of the housing 34, and the insertion cylinder 84 is a first holding cylinder. 50 with gaps 92a and 92b. In addition, a seal member 78 is provided between the tapered portion 82 of the valve housing 66 on the third fuel passage 100 side in the housing 34 and the first holding cylinder portion 50, and the seal member is provided in the second holding cylinder portion 52. A leak hole 64 that communicates between the storage chamber 56 and the outside is opened between 78 and the press-fit cylinder portion 86.

これにより、燃料供給装置10の組付けが完了した後に燃料の漏れを確認する検査を行う際、誤ってシール部材78を組み付け忘れた場合には、第2燃料通路46側から供給された燃料が弁ハウジング66と第2保持筒部52との間の間隙92a、92bを通じてリーク孔64から外部へと流出し、前記シール部材78が所定の位置に装着されていないことを容易且つ確実に検知することが可能となる。   As a result, when an inspection for confirming fuel leakage is performed after the assembly of the fuel supply device 10 is completed, if the assembly of the seal member 78 is mistakenly forgotten, the fuel supplied from the second fuel passage 46 side is removed. It flows out of the leak hole 64 through the gaps 92a and 92b between the valve housing 66 and the second holding cylinder portion 52, and it is easily and reliably detected that the seal member 78 is not mounted at a predetermined position. It becomes possible.

また、弁ハウジング66の圧入筒部86を収納部48に対して全周で圧入することができるため、リーク溝によって全周での圧入が行われず一部が非接触であった従来の燃料供給装置と比較し、収納部48の剛性をより高めることができ、それに伴って、プレッシャレギュレータ42の開閉動作時に生じる振動に起因した作動音を低減することができる。   Further, since the press-fitting cylinder portion 86 of the valve housing 66 can be press-fitted around the entire circumference of the storage portion 48, the conventional fuel supply is not partly in contact with the leak groove and is not partly in contact. Compared with the device, the rigidity of the storage portion 48 can be further increased, and accordingly, the operation noise caused by the vibration generated during the opening / closing operation of the pressure regulator 42 can be reduced.

さらに、収納部48において、弁ハウジング66の圧入される第2保持筒部52の外周側に第1及び第2リブ60、62を設けることで、前記第1及び第2リブ60、62によって前記第2保持筒部52の剛性をさらに高めることができ、内部に収納されたプレッシャレギュレータ42の開閉動作時の作動音をより一層低減できる。   Furthermore, in the storage part 48, the first and second ribs 60, 62 are provided on the outer peripheral side of the second holding cylinder part 52 into which the valve housing 66 is press-fitted, whereby the first and second ribs 60, 62 are used to The rigidity of the 2nd holding cylinder part 52 can further be raised, and the operation sound at the time of opening / closing operation | movement of the pressure regulator 42 accommodated in the inside can be reduced further.

さらにまた、収納部48において、リーク孔64を第2保持筒部52の外周側に設けられた複数の第1リブ60の間に設けることで、リーク孔64を前記収納部48に開口させた場合でも剛性に対する影響が低減される。   Furthermore, in the storage portion 48, the leak hole 64 is opened in the storage portion 48 by providing the leak hole 64 between the plurality of first ribs 60 provided on the outer peripheral side of the second holding cylinder portion 52. Even in this case, the influence on the rigidity is reduced.

またさらに、収納部48における第2保持筒部52の外周面に対して径方向外側へ環状に突出し、ハウジング34の長手方向に沿って互いに離間した複数の第1リブ60と、前記長手方向に沿って延在して複数の第1リブ60を互いに接続する第2リブ62とを備えることで、前記第1及び第2リブ60、62を交差状とすることができ、剛性をより一層高めることが可能となる。   Furthermore, a plurality of first ribs 60 projecting annularly outward in the radial direction with respect to the outer peripheral surface of the second holding cylinder portion 52 in the storage portion 48 and spaced apart from each other along the longitudinal direction of the housing 34, and in the longitudinal direction The first and second ribs 60, 62 can be crossed by extending along the second ribs 62 that connect the plurality of first ribs 60 to each other, thereby further increasing the rigidity. It becomes possible.

また、収納部48内に設けられるシール部材78は、弁ハウジング66の一端部側に設けられる場合に限定されるものではなく、例えば、前記弁ハウジング66の外周面と第1保持筒部50の内周面との間に設けて両者に当接させるようにしてもよい。   Further, the seal member 78 provided in the storage portion 48 is not limited to the case where the seal member 78 is provided on one end portion side of the valve housing 66, and for example, the outer peripheral surface of the valve housing 66 and the first holding cylinder portion 50. It may be provided between the inner peripheral surface and abutted on both.

なお、本発明に係る燃料供給装置は、上述の実施の形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることはもちろんである。   In addition, the fuel supply device according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

10…燃料供給装置 12…燃料タンク
14…蓋部材 16…燃料ポンプ
18…ポンプモジュール 20…フィルタ
34…ハウジング 36…エンドブロック
38…第1保持部 40…第2保持部
42…プレッシャレギュレータ 48…収納部
50…第1保持筒部 52…第2保持筒部
56…収納室 60…第1リブ
62…第2リブ 64…リーク孔
66…弁ハウジング 68…弁座部材
72…弁体 78…シール部材
84…挿入筒部 86…圧入筒部
92a、92b…間隙
DESCRIPTION OF SYMBOLS 10 ... Fuel supply apparatus 12 ... Fuel tank 14 ... Cover member 16 ... Fuel pump 18 ... Pump module 20 ... Filter 34 ... Housing 36 ... End block 38 ... 1st holding | maintenance part 40 ... 2nd holding | maintenance part 42 ... Pressure regulator 48 ... Storage Part 50: first holding cylinder part 52 ... second holding cylinder part 56 ... storage chamber 60 ... first rib 62 ... second rib 64 ... leak hole 66 ... valve housing 68 ... valve seat member 72 ... valve body 78 ... seal member 84 ... Insertion cylinder part 86 ... Press fit cylinder part 92a, 92b ... Gap

Claims (4)

燃料タンクに配置され、該燃料タンク内の燃料を吸入して外部へと吐出する燃料ポンプと、該燃料ポンプの吐出口が接続される燃料通路を有したハウジングと、前記ハウジングの内部に設けられ前記燃料通路内で余剰となった燃料を外部へと排出することで前記燃料の圧力を調整するレギュレータとを備えた燃料供給装置において、
前記ハウジングは、前記レギュレータにおける弁筒の少なくとも一部が圧入され保持される圧入保持部と、該圧入保持部に対して前記燃料通路側に隣接して設けられた挿入保持部とを備え、
前記弁筒には、前記圧入保持部に圧入される第1弁筒部と、前記挿入保持部に対してシール部材を間にして挿入され、且つ、前記挿入保持部との間に間隙を有した第2弁筒部とを備え、
前記挿入保持部には、前記シール部材と前記圧入保持部との間となる位置に前記ハウジングの内部と外部とを連通するリーク孔が形成される、燃料供給装置。
A fuel pump that is disposed in the fuel tank and sucks the fuel in the fuel tank and discharges the fuel to the outside, a housing having a fuel passage to which a discharge port of the fuel pump is connected, and an interior of the housing. In a fuel supply device comprising a regulator that adjusts the pressure of the fuel by discharging the fuel surplus in the fuel passage to the outside,
The housing includes a press-fit holding portion in which at least a part of the valve cylinder in the regulator is press-fitted and held, and an insertion holding portion provided adjacent to the fuel passage side with respect to the press-fit holding portion,
The valve cylinder is inserted with a seal member between the first valve cylinder part to be press-fitted into the press-fitting holding part and the insertion holding part, and there is a gap between the insertion holding part. A second valve cylinder portion,
The fuel supply apparatus, wherein the insertion holding portion is formed with a leak hole that communicates the inside and the outside of the housing at a position between the seal member and the press-fit holding portion.
請求項1記載の燃料供給装置において、
前記圧入保持部の外周側にリブが立設される、燃料供給装置。
The fuel supply device according to claim 1, wherein
A fuel supply device, wherein a rib is erected on the outer peripheral side of the press-fit holding portion.
請求項2記載の燃料供給装置において、
前記リーク孔は複数のリブの間に形成される、燃料供給装置。
The fuel supply device according to claim 2, wherein
The fuel supply device, wherein the leak hole is formed between a plurality of ribs.
請求項2又は3記載の燃料供給装置において、
前記リブは、前記ハウジングの延在方向に沿って互いに離間して設けられる第1リブ部と、
前記延在方向に沿って設けられ、複数の第1リブ部を互いに接続する第2リブ部と、
を備える、燃料供給装置。
The fuel supply device according to claim 2 or 3,
The ribs are spaced apart from each other along the extending direction of the housing;
A second rib portion provided along the extending direction and connecting the plurality of first rib portions to each other;
A fuel supply device comprising:
JP2018207845A 2018-11-05 2018-11-05 Fuel supply device Active JP6586214B1 (en)

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