JP6444481B1

JP6444481B1 - Manufacturing method of fuel supply device

Info

Publication number: JP6444481B1
Application number: JP2017239201A
Authority: JP
Inventors: 金子　哲也; 哲也金子; 田中　聡; 聡田中; 聡一郎奈尾; 鈴木　隆之; 隆之鈴木; 裕仁鎌田
Original assignee: Keihin Corp
Current assignee: Keihin Corp
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2018-12-26
Anticipated expiration: 2037-12-14
Also published as: JP2019105246A

Abstract

【課題】燃料供給装置において複数の部材からなる筐体の接続を効率的に行うことで製造性を高める。
【解決手段】燃料供給装置１０を構成するハウジング１２の他端部に開口部３０が形成され、この開口部３０には隔壁部材２０が収納され、燃料ポンプ１４の吐出部５８及びプレッシャレギュレータ１３０を前記隔壁部材２０で保持すると共に、前記開口部３０を閉塞するようにカバー部材２２が設けられる。また、ハウジング１２の他端部に第１溶着部３６が形成され、隔壁部材２０には第１溶着部３６と略同一平面となる第２溶着部１２４が形成され、前記ハウジング１２及び前記隔壁部材２０に対して前記カバー部材２２を当接させ溶着する際、前記第１及び第２溶着部３６、１２４が前記カバー部材２２に対して同時に溶着され接続される。
【選択図】図２Manufacturability is improved by efficiently connecting housings made of a plurality of members in a fuel supply device.
An opening 30 is formed at the other end of a housing 12 constituting the fuel supply device 10, and a partition member 20 is accommodated in the opening 30, and a discharge part 58 and a pressure regulator 130 of a fuel pump 14 are provided. A cover member 22 is provided so as to be held by the partition member 20 and to close the opening 30. A first weld 36 is formed at the other end of the housing 12, and a second weld 124 that is substantially flush with the first weld 36 is formed on the partition member 20. The housing 12 and the partition member When the cover member 22 is brought into contact with and welded to the first member 20, the first and second welded portions 36 and 124 are simultaneously welded and connected to the cover member 22.
[Selection] Figure 2

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の製造方法に関する。
The present invention relates to a method for producing a fuel supply equipment for supplying fuel from a fuel tank of the vehicle to the internal combustion engine.

従来から、自動二輪車等の車両における燃料タンクの外側に配置され内燃機関の燃料噴射装置へと燃料を供給する燃料供給装置が知られている。 2. Description of the Related Art Conventionally, a fuel supply device that is disposed outside a fuel tank in a vehicle such as a motorcycle and supplies fuel to a fuel injection device of an internal combustion engine is known.

このような燃料供給装置は、例えば、特許文献１に開示されるように、燃料タンクの外側に装着され、第１ケース及び第２ケースからハウジングが構成され、このハウジング内に配置される支持部材と第１ケースとの間に燃料ポンプが保持される。そして、第１ケースの吸込みポートから吸入された燃料が、前記燃料ポンプ内で加圧された後、吐出口から前記支持部材と第２ケースとの間に形成される空所を通じて吐出ポートへと導出される。 For example, as disclosed in Patent Document 1, such a fuel supply device is mounted on the outside of a fuel tank, and a housing is constituted by a first case and a second case, and a support member disposed in the housing. And the first case hold the fuel pump. Then, after the fuel sucked from the suction port of the first case is pressurized in the fuel pump, it passes from the discharge port to the discharge port through a space formed between the support member and the second case. Derived.

また、この空所において吐出ポートの反対側にはプレッシャレギュレータが接続され、このプレッシャレギュレータから排出された燃料は、燃料ポンプのベーパ排出口から排出された燃料と共に戻しポートから燃料タンクへと戻される。 In addition, a pressure regulator is connected to the opposite side of the discharge port in this space, and the fuel discharged from the pressure regulator is returned from the return port to the fuel tank together with the fuel discharged from the vapor discharge port of the fuel pump. .

上述した第１ケースと第２ケースとは、それぞれのフランジ同士が溶着されることで接合され、内部に収納される支持部材と前記第２ケースとは、該支持部材の環状基部の端面と第２ケースの底部内面とが溶着されることで接合されている。 The first case and the second case described above are joined together by welding the flanges, and the support member housed inside and the second case are the end face of the annular base portion of the support member and the second case. The two cases are joined together by welding to the bottom inner surface.

特許第３７６４２９６号公報Japanese Patent No. 3764296

しかしながら、上述した燃料供給装置では、第２ケースの底部内面に対して支持部材の環状基部を溶着した後、この第２ケースのフランジに対して第１ケースのフランジを当接させて溶着する構成としているため、２回の溶着工程が必要となるため製造工程の増加を招き製造性が低下してしまうという問題がある。 However, in the fuel supply device described above, after the annular base portion of the support member is welded to the inner surface of the bottom portion of the second case, the flange of the first case is brought into contact with the flange of the second case and welded. Therefore, since two welding steps are required, there is a problem in that the manufacturing process is increased and the productivity is lowered.

本発明は、前記の課題を考慮してなされたものであり、複数の部材からなる筐体の接続を効率的に行うことで製造性を高めることが可能な燃料供給装置の製造方法を提供することを目的とする。
The present invention has been made in consideration of the above problems, provides a method for manufacturing a fuel supply equipment that can increase the productivity by performing the connection of the housing comprising a plurality of members efficiently The purpose is to do.

前記の目的を達成するために、本発明は、車両に搭載された燃料タンクの外側に配置される燃料供給装置の製造方法において、
内部に収納される燃料ポンプの吐出部側に開口部を有した筐体と、
開口部を閉塞するカバー部材と、
吐出部が接続され、カバー部材との間にプレッシャレギュレータ又は内燃機関と連通する高圧燃料室を有する隔壁部材と、
筐体と隔壁部材との間に形成され、燃料ポンプを収容し、高圧燃料室の余剰燃料がプレッシャレギュレータにより排出される排出室と、
を備え、
筐体における開口部側の端部とカバー部材とを溶着によって接続する第１溶着部と、
隔壁部材とカバー部材とを高圧燃料室の外縁部で溶着によって接続する第２溶着部と、
を有し、
第１溶着部と第２溶着部とが、開口部側の端部において同一面上となり、
燃料ポンプの吐出部を隔壁部材の挿入孔へと挿入することで、隔壁部材を前記筐体内で位置決めし、筐体に形成されるコネクタ部と燃料ポンプの端子との間を接続するリード線を隔壁部材と筐体との接続によって形成された閉ざされた空間となる排出室内に配置する第１の工程と、
カバー部材を隔壁部材及び筐体に対して溶着する第２の工程と、
を有することを特徴とする。
To achieve the above object, the present invention provides a method for manufacturing a fuel supply device disposed outside a fuel tank mounted on a vehicle.
A housing having an opening on the discharge side of the fuel pump housed inside;
A cover member that closes the opening;
A partition member having a high-pressure fuel chamber connected to the discharge part and communicating with the pressure regulator or the internal combustion engine between the cover member,
A discharge chamber that is formed between the housing and the partition member, accommodates the fuel pump, and surplus fuel in the high-pressure fuel chamber is discharged by the pressure regulator;
With
A first welded portion for connecting the end portion on the opening side of the housing and the cover member by welding;
A second welding part that connects the partition member and the cover member by welding at the outer edge of the high-pressure fuel chamber;
Have
A first weld portion and the second weld portion is Ri Do and on the same plane at the end of the opening side,
By inserting the discharge part of the fuel pump into the insertion hole of the partition member, the partition member is positioned in the casing, and a lead wire for connecting between the connector part formed on the casing and the terminal of the fuel pump is provided. A first step of disposing in a discharge chamber that is a closed space formed by connecting the partition wall member and the housing;
A second step of welding the cover member to the partition member and the housing;
It is characterized by having .

本発明によれば、燃料ポンプが内部に収納される筐体と、筐体の開口部を閉塞するカバー部材と、燃料ポンプの吐出部が接続されカバー部材との間にプレッシャレギュレータ又は内燃機関と連通する高圧燃料室を有した隔壁部材とを備え、開口部側となる筐体の端部とカバー部材とを接続する第１溶着部と、隔壁部材とカバー部材とを高圧燃料室の外縁部において接続する第２溶着部とを、開口部側の端部において同一面上に形成している。 According to the present invention, the housing in which the fuel pump is housed, the cover member that closes the opening of the housing, the pressure regulator or the internal combustion engine between the cover member and the discharge portion of the fuel pump is connected A partition member having a high-pressure fuel chamber in communication, a first welded portion for connecting the end of the housing on the opening side and the cover member, and an outer edge portion of the high-pressure fuel chamber between the partition member and the cover member The second welded portion to be connected at is formed on the same surface at the end on the opening side.

従って、カバー部材と筐体及び隔壁部材を接続する際、同一面上の第１及び第２溶着部を同時に溶着して接続することができるため、２回の溶着工程によって第１及び第２ケース、支持部材を２回の溶着工程で順番に接続していた従来技術に係る燃料供給装置と比較し、カバー部材と筐体及び隔壁部材との接続を効率的に行うことができ、それに伴って製造性を高めることが可能となる。 Therefore, when connecting the cover member, the housing, and the partition member, the first and second welded portions on the same surface can be welded and connected at the same time. Therefore, the first and second cases are formed by two welding processes. Compared with the fuel supply device according to the prior art in which the support member is connected in order in the two welding steps, the connection between the cover member, the housing and the partition member can be performed efficiently. Manufacturability can be improved.

また、燃料ポンプの吐出部を隔壁部材の挿入孔へと挿入することで、隔壁部材を筐体内で位置決めする第１の工程と、カバー部材を隔壁部材及び筐体に対して溶着する第２の工程とを有することで、例えば、作業者が燃料ポンプと隔壁部材とを組み付ける際、この燃料ポンプが傾いてしまっていても軸ずれを手で修正しながら挿入孔へと挿入することで容易且つ確実に位置決めを行って接続することができる。 Also, a first step of positioning the partition member in the casing by inserting the discharge portion of the fuel pump into the insertion hole of the partition member, and a second step of welding the cover member to the partition member and the casing For example, when the operator assembles the fuel pump and the partition member, even if the fuel pump is tilted, it can be easily inserted by inserting it into the insertion hole while correcting the axis deviation by hand. Positioning can be performed with certainty.

さらに、第１の工程において、燃料ポンプを隔壁部材によって予め筐体に対して所定位置へと位置決めしておくことで、第２の工程においてカバー部材を筐体及び隔壁部材に溶着する際、燃料ポンプの軸ずれを考慮することなく確実且つ効率的に作業を行うことができる。 Furthermore, in the first step, the fuel pump is previously positioned at a predetermined position with respect to the casing by the partition member, so that the fuel can be removed when the cover member is welded to the casing and the partition member in the second step. Work can be performed reliably and efficiently without considering the shaft misalignment of the pump.

さらにまた、燃料ポンプの端子に接続されるリード線を隔壁部材と筐体との間の空間に配置することにより、このリード線を隔壁部材と筐体との間の空間に収納しつつ、隔壁部材とカバー部材とを溶着する際に、第１溶着部又は第２溶着部にリード線が挟まれてしまうことを防止できるため、リード線の挟み込みを考慮することなく確実且つ効率的に溶着作業を行うことができる。 Furthermore, by arranging the lead wire connected to the terminal of the fuel pump in the space between the partition wall member and the housing, the lead wire is accommodated in the space between the partition wall member and the housing, and the partition wall When the member and the cover member are welded, the lead wire can be prevented from being caught between the first welded portion and the second welded portion, so that the welding operation can be performed reliably and efficiently without considering the pinching of the lead wire. It can be performed.

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、燃料供給装置を構成する筐体における開口部側の端部とカバー部材とを接続する第１溶着部と、燃料ポンプの吐出部が接続されカバー部材との間にプレッシャレギュレータ又は内燃機関と連通する高圧燃料室を有した隔壁部材とカバー部材とを接続する第２溶着部を有し、この第１溶着部と第２溶着部とを、開口部側の端部において同一面上とすることにより、カバー部材と筐体及び隔壁部材を接続する際に、同一面上の第１及び第２溶着部を同時に溶着して接続することができる。 That is, a pressure regulator or an internal combustion engine is connected between the first welded portion that connects the end portion on the opening side in the casing constituting the fuel supply device and the cover member, and the discharge portion of the fuel pump and the cover member. It has the 2nd welding part which connects the partition member which has a high-pressure fuel chamber which connects, and a cover member, and makes the 1st welding part and the 2nd welding part on the same surface in the end by the side of an opening Thereby, when connecting a cover member, a housing | casing, and a partition member, the 1st and 2nd welding part on the same surface can be welded and connected simultaneously.

その結果、２回の溶着工程で第１及び第２ケース、支持部材を順番に接続していた従来技術に係る燃料供給装置と比較し、カバー部材と筐体及び隔壁部材との接続を効率的に行うことができ、それに伴って製造性を高めることができる。 As a result, the connection between the cover member, the casing, and the partition member is more efficient as compared with the fuel supply device according to the prior art in which the first and second cases and the support member are connected in order in the two welding steps. The productivity can be increased accordingly.

また、第１ケースと第２ケースとの溶着部と、支持部材と第２ケースの溶着部とが同一面上にない従来技術では、溶着面と垂直方向（板厚方向）における２カ所で溶着部を形成するために板厚方向の寸法を大きくする必要があったが、本発明では２カ所の第１及び第２溶着部が同一面上にあるため板厚方向の寸法を低減することが可能となる。 Further, in the conventional technique in which the welded portion between the first case and the second case and the welded portion of the support member and the second case are not on the same plane, the weld is performed at two locations in the direction perpendicular to the welded surface (plate thickness direction). In order to form the portion, it is necessary to increase the dimension in the thickness direction. However, in the present invention, since the two first and second welded portions are on the same plane, the dimension in the thickness direction can be reduced. It becomes possible.

図１Ａは、本発明の実施の形態に係る燃料供給装置の外観斜視図であり、図１Ｂは、図１Ａに示す燃料供給装置の正面図である。1A is an external perspective view of a fuel supply apparatus according to an embodiment of the present invention, and FIG. 1B is a front view of the fuel supply apparatus shown in FIG. 1A. 図１ＢのＩＩ−ＩＩ線に沿った一部省略断面図である。FIG. 2 is a partially omitted cross-sectional view taken along line II-II in FIG. 1B. 図１ＢのＩＩＩ−ＩＩＩ線に沿った一部省略断面図である。FIG. 3 is a partially omitted cross-sectional view taken along line III-III in FIG. 1B. 図１ＢのＩＶ−ＩＶ線に沿った一部省略断面図である。FIG. 4 is a partially omitted cross-sectional view taken along line IV-IV in FIG. 1B. 図１ＢのＶ−Ｖ線に沿った一部省略断面図である。FIG. 5 is a partially omitted cross-sectional view taken along line VV in FIG. 1B. 図６Ａ〜図６Ｃは、ハウジング及び隔壁部材に対してカバー部材を溶着して接続する製造方法を示す工程説明図である。6A to 6C are process explanatory views showing a manufacturing method in which a cover member is welded and connected to a housing and a partition wall member.

本発明に係る燃料供給装置の製造方法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１Ａ及び図１Ｂ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。
DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment for a manufacturing method of the fuel supply equipment according to the present invention will be described in detail with reference to the accompanying drawings. 1A and 1B, 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、図示しない二輪車等の車両において燃料タンク（図示せず）の外側に配置され使用されるものであり、図１Ａ〜図５に示されるように、筒状のハウジング（筐体）１２と、該ハウジング１２の内部に収納される燃料ポンプ１４と、前記ハウジング１２の一端部に連結されフィルタ１６の収納されるフィルタボディ１８と、前記ハウジング１２の他端部側に収納される隔壁部材２０と、前記隔壁部材２０及び前記ハウジング１２の他端部を閉塞するカバー部材２２とを含む。 The fuel supply device 10 is disposed and used outside a fuel tank (not shown) in a vehicle such as a motorcycle (not shown). As shown in FIGS. 1A to 5, the fuel supply device 10 has a cylindrical housing (housing). Body) 12, a fuel pump 14 housed in the housing 12, a filter body 18 connected to one end of the housing 12 and housing the filter 16, and housed on the other end side of the housing 12. And a cover member 22 that closes the other end portion of the partition member 20 and the housing 12.

なお、この燃料供給装置１０は、図示しない車両において燃料ポンプ１４の軸線が矢印Ａ、Ｂ方向（図２参照）に沿って略水平となるように搭載される横置き式の燃料供給装置である。 The fuel supply device 10 is a horizontal fuel supply device that is mounted on a vehicle (not shown) so that the axis of the fuel pump 14 is substantially horizontal along the directions of arrows A and B (see FIG. 2). .

ハウジング１２は、例えば、樹脂製材料から有底筒状に形成され、その一端部となる底部には筒状に突出した連結部２４が形成され後述するフィルタボディ１８が接続される。連結部２４は、図２に示されるように、ハウジング１２の中心から径方向外側にオフセットして形成され、その中心には軸方向（矢印Ａ、Ｂ方向）に貫通した吸入通路２６が形成されると共に、この吸入通路２６に対してさらに径方向外側にオフセットして燃料ポンプ１４がハウジング１２の内部に収納される。 For example, the housing 12 is formed in a bottomed cylindrical shape from a resin material, and a connecting portion 24 that protrudes in a cylindrical shape is formed on a bottom portion that is one end portion thereof, and a filter body 18 described later is connected thereto. As shown in FIG. 2, the connecting portion 24 is formed to be offset radially outward from the center of the housing 12, and a suction passage 26 penetrating in the axial direction (the directions of arrows A and B) is formed at the center. At the same time, the fuel pump 14 is housed inside the housing 12 offset further radially outwardly from the suction passage 26.

また、ハウジング１２の一端部には、フィルタボディ１８の接続される接続端２８が外縁部に沿って形成される。この接続端２８は、ハウジング１２の外周面に対して径方向外側に膨出して環状に形成され、前記フィルタボディ１８に臨む端面がハウジング１２の軸線と略直交した略同一平面となるように形成される。そして、接続端２８に対してフィルタボディ１８が当接することでハウジング１２とフィルタボディ１８とが所定位置に位置決めされ、溶着等によって互いに接続される。 A connection end 28 to which the filter body 18 is connected is formed at one end of the housing 12 along the outer edge. The connection end 28 bulges radially outward with respect to the outer peripheral surface of the housing 12 and is formed in an annular shape so that the end surface facing the filter body 18 is substantially in the same plane substantially orthogonal to the axis of the housing 12. Is done. The housing 12 and the filter body 18 are positioned at a predetermined position by the filter body 18 coming into contact with the connection end 28 and are connected to each other by welding or the like.

一方、ハウジング１２の他端部には軸方向（矢印Ｂ方向）に向かって開口した開口部３０が形成され、この開口部３０の外周側となる外縁部にはカバー部材２２の接続される第１接続端３２が形成される。この第１接続端３２は、径方向外側に膨出して環状に形成され、その端面がハウジング１２の軸線と略直交した略同一平面となるように形成されると共に、環状に形成された環状溝を挟んで外側に形成された第１位置規制部３４と、該環状溝の内側に形成された第１溶着部３６とを有する。 On the other hand, the other end of the housing 12 is formed with an opening 30 that opens in the axial direction (arrow B direction). The outer edge of the opening 30 is connected to the cover member 22 at the outer edge. One connection end 32 is formed. The first connection end 32 bulges outward in the radial direction, is formed in an annular shape, and its end surface is formed in substantially the same plane substantially orthogonal to the axis of the housing 12, and an annular groove formed in an annular shape A first position restricting portion 34 formed on the outer side of the ring and a first welded portion 36 formed on the inner side of the annular groove.

そして、第１接続端３２に対してカバー部材２２が当接することで、該カバー部材２２がハウジング１２の軸線と略直交した状態で第１位置規制部３４によって所定位置へと位置決めされハウジング１２の開口部３０が閉塞される。 Then, when the cover member 22 abuts against the first connection end 32, the cover member 22 is positioned to a predetermined position by the first position restricting portion 34 in a state substantially orthogonal to the axis of the housing 12. The opening 30 is closed.

また、ハウジング１２の内部には、燃料ポンプ１４の側方となる位置に所定容積を有した排出室（空間）３８が設けられ、この排出室３８には、後述する燃料ポンプ１４で脱気された燃料の気体成分が排出されると共に、前記燃料ポンプ１４から吐出され余剰となった燃料（余剰燃料）が導入される。 A discharge chamber (space) 38 having a predetermined volume is provided inside the housing 12 at a position on the side of the fuel pump 14, and the discharge chamber 38 is deaerated by the fuel pump 14 described later. The gaseous component of the remaining fuel is discharged, and surplus fuel (surplus fuel) discharged from the fuel pump 14 is introduced.

さらに、図５に示されるように、ハウジング１２の内部には通路壁４０を介して排出室３８と分離され、該ハウジング１２の軸方向に沿って延在する排出通路４２が形成される。 Further, as shown in FIG. 5, a discharge passage 42 that extends along the axial direction of the housing 12 is formed inside the housing 12, separated from the discharge chamber 38 through the passage wall 40.

この排出通路４２は、ハウジング１２の一端部から他端部まで延在し、その一端部側（矢印Ａ方向）がフィルタボディ１８との間に形成された連通路４４と連通し、他端部側（矢印Ｂ方向）が排出室３８と連通している。すなわち、排出通路４２は、ハウジング１２及び燃料ポンプ１４の軸線と略平行に形成されている。そして、燃料供給装置１０が燃料タンクに搭載された際、排出通路４２が重力方向下方となる位置に形成される。 The discharge passage 42 extends from one end portion of the housing 12 to the other end portion, and one end portion side (in the direction of arrow A) communicates with a communication passage 44 formed between the filter body 18 and the other end portion. The side (arrow B direction) communicates with the discharge chamber 38. That is, the discharge passage 42 is formed substantially parallel to the axis of the housing 12 and the fuel pump 14. When the fuel supply device 10 is mounted on the fuel tank, the discharge passage 42 is formed at a position that is downward in the direction of gravity.

さらにまた、ハウジング１２には、図３に示されるように、その内部に形成され排出室３８と分離された吐出通路４６と、この吐出通路４６と連通し前記ハウジング１２の外部へと突出した管状の吐出管４８を有している。この吐出管４８は、上方に向かって突出し図示しない配管を介して内燃機関のインジェクタと接続される。 Further, as shown in FIG. 3, the housing 12 has a discharge passage 46 formed therein and separated from the discharge chamber 38, and a tubular tube that communicates with the discharge passage 46 and protrudes outside the housing 12. The discharge pipe 48 is provided. The discharge pipe 48 protrudes upward and is connected to an injector of the internal combustion engine via a pipe (not shown).

またさらに、ハウジング１２の外部には、図１Ａ及び図１Ｂに示されるように、吐出管４８と略平行にコネクタ部５０が設けられ、図示しないコントローラに接続されるハーネス（図示せず）が接続可能に設けられると共に、後述する燃料ポンプ１４の給電端子（端子）８０（図４参照）と接続されている。 Further, as shown in FIGS. 1A and 1B, a connector portion 50 is provided outside the housing 12 substantially in parallel with the discharge pipe 48, and a harness (not shown) connected to a controller (not shown) is connected. In addition to being provided, it is connected to a power supply terminal (terminal) 80 (see FIG. 4) of the fuel pump 14 described later.

燃料ポンプ１４は、図２〜図５に示されるように、例えば、円筒状のケーシング５２と、このケーシング５２の一端部側（矢印Ａ方向）に収納されるポンプ部５４と、前記ケーシング５２の中央部に収納され該ポンプ部５４を駆動するモータ部５６と、前記ケーシング５２の他端部側（矢印Ｂ方向）に設けられ前記ポンプ部５４によって吸い込まれた燃料を吐出する吐出部５８とを含む。 As shown in FIGS. 2 to 5, the fuel pump 14 includes, for example, a cylindrical casing 52, a pump portion 54 housed on one end side (in the direction of arrow A) of the casing 52, and the casing 52. A motor unit 56 that is housed in the center and drives the pump unit 54, and a discharge unit 58 that is provided on the other end side (in the direction of arrow B) of the casing 52 and discharges the fuel sucked in by the pump unit 54. Including.

ポンプ部５４は、ポンプボディ６０と、このポンプボディ６０を覆うポンプカバー６２と、前記ポンプボディ６０と前記ポンプカバー６２との間に設けられるインペラ６４とを含み、前記ポンプボディ６０と前記ポンプカバー６２とが軸方向（矢印Ａ、Ｂ方向）に沿って積層された状態でケーシング５２の一端部に固定される。 The pump unit 54 includes a pump body 60, a pump cover 62 covering the pump body 60, and an impeller 64 provided between the pump body 60 and the pump cover 62, and the pump body 60 and the pump cover 62 is fixed to one end of the casing 52 in a state of being laminated along the axial direction (arrow A, B direction).

ポンプボディ６０には、その中央部にモータ部５６を構成するシャフト６６が挿通されると共に、該シャフト６６の径方向外側には軸方向（矢印Ａ、Ｂ方向）に貫通し燃料の吐出される吐出口６８が形成され、内部に形成された断面円形状のポンプ室７０に円盤状のインペラ６４が回転自在に収納される。そして、ポンプ室７０と吐出口６８とが連通している。 A shaft 66 constituting the motor unit 56 is inserted into the pump body 60 at the center thereof, and fuel is discharged through the shaft 66 in the axial direction (in the directions of arrows A and B) radially outward. A discharge port 68 is formed, and a disk-like impeller 64 is rotatably accommodated in a pump chamber 70 having a circular cross section formed inside. The pump chamber 70 and the discharge port 68 communicate with each other.

ポンプカバー６２は、ポンプボディ６０のポンプ室７０を覆うように設けられ、その一端面に形成され軸方向（矢印Ａ、Ｂ方向）に貫通した吸入口７２と、ポンプボディ６０に臨む他端面に形成されたポンプ流路７４と、このポンプ流路７４に開口し気体燃料を外部へと排出させる脱気孔７６（図４参照）とを備える。 The pump cover 62 is provided so as to cover the pump chamber 70 of the pump body 60. The pump cover 62 is formed on one end surface of the pump cover 62 and penetrates in the axial direction (arrows A and B directions) and on the other end surface facing the pump body 60. The formed pump flow path 74 and a deaeration hole 76 (see FIG. 4) that opens to the pump flow path 74 and discharges gaseous fuel to the outside.

そして、吸入口７２は、ポンプカバー６２の一端面から軸方向（矢印Ａ方向）へ突出した吸入管７８に形成され、この吸入管７８がハウジング１２の吸入通路２６と接続され連通している。また、脱気孔７６は、ハウジング１２の排出室３８と連通している。 The suction port 72 is formed in a suction pipe 78 protruding in the axial direction (direction of arrow A) from one end face of the pump cover 62, and the suction pipe 78 is connected to and communicated with the suction passage 26 of the housing 12. The deaeration hole 76 communicates with the discharge chamber 38 of the housing 12.

モータ部５６は、ブラシレスモータからなり、ケーシング５２内に回転自在に設けられるステータコア及びロータ（図示せず）を含み、このロータの中心に保持されるシャフト６６の一端部がインペラ６４の中心に連結され、他端部がポンプボディ６０に対して回転自在に支持される。 The motor unit 56 is a brushless motor and includes a stator core and a rotor (not shown) rotatably provided in the casing 52, and one end of a shaft 66 held at the center of the rotor is connected to the center of the impeller 64. Then, the other end is rotatably supported with respect to the pump body 60.

また、モータ部５６には、図４に示されるように、ケーシング５２の他端部に設けられた複数の給電端子８０が電気的に接続され、この給電端子８０にはそれぞれリード線８２が接続され、このリード線８２は排出室３８の内部に延在した後にコネクタ部５０へと電気的に接続される。 As shown in FIG. 4, a plurality of power supply terminals 80 provided at the other end of the casing 52 are electrically connected to the motor unit 56, and lead wires 82 are connected to the power supply terminals 80, respectively. The lead wire 82 extends into the discharge chamber 38 and is then electrically connected to the connector portion 50.

そして、図示しないコントローラからの制御信号がコネクタ部５０、リード線８２及び給電端子８０を介してモータ部５６へと出力されることで、このモータ部５６を構成するロータが回転し、それに伴って、シャフト６６を介してインペラ６４がポンプ室７０で回転する。 A control signal from a controller (not shown) is output to the motor unit 56 via the connector unit 50, the lead wire 82, and the power supply terminal 80, whereby the rotor constituting the motor unit 56 rotates, and accordingly. The impeller 64 rotates in the pump chamber 70 via the shaft 66.

吐出部５８は、図２〜図５に示されるように、モータ部５６の他端部に臨むようにケーシング５２の他端部に固定され、前記ケーシング５２に連結される基部８４と、この基部８４に対して前記ケーシング５２から離間する方向（矢印Ｂ方向）へ突出した円筒部８６とを含み、この円筒部８６が後述する隔壁部材２０へ挿入され保持される。 2-5, the discharge part 58 is fixed to the other end part of the casing 52 so as to face the other end part of the motor part 56, and is connected to the casing 52. And a cylindrical portion 86 protruding in a direction away from the casing 52 (arrow B direction) with respect to 84, and this cylindrical portion 86 is inserted and held in the partition member 20 described later.

円筒部８６の中心には、ケーシング５２の燃料を外部へ吐出する燃料出口８８が軸方向に沿って貫通すると共に、その内部には燃料が所定圧力となることで弁開状態となり前記燃料出口８８を開放する第１チェック弁９０が設けられる。この第１チェック弁９０は、円筒部８６との間に介装されたスプリング９２によってモータ部５６側（矢印Ａ方向）へと常に付勢されており、弁閉状態から燃料の圧力によって開放される。 A fuel outlet 88 for discharging the fuel in the casing 52 to the outside penetrates in the center of the cylindrical portion 86 along the axial direction. The fuel outlet 88 is opened when the fuel reaches a predetermined pressure. A first check valve 90 is provided to open the valve. The first check valve 90 is always urged toward the motor portion 56 (in the direction of arrow A) by a spring 92 interposed between the cylindrical portion 86 and is opened by the fuel pressure from the valve closed state. The

フィルタボディ１８は、例えば、樹脂製材料から形成され、ハウジング１２の一端部に連結され、円筒状に形成されたボディ本体９４と、このボディ本体９４の外周面から突出した燃料供給管９６及び燃料排出管９８とを有し、前記ボディ本体９４の開口した一端部にキャップ１００が装着されることで閉塞される。 The filter body 18 is formed of, for example, a resin material and is connected to one end of the housing 12. The body body 94 is formed in a cylindrical shape, and the fuel supply pipe 96 and the fuel projecting from the outer peripheral surface of the body body 94. It has a discharge pipe 98 and is closed by attaching a cap 100 to one end of the body main body 94 that is open.

ボディ本体９４は、ハウジング１２の一端部に対して燃料ポンプ１４と略同軸状となるように設けられ、このハウジング１２に臨む端部に第１当接部１０２が環状、且つ、前記ボディ本体９４の軸線と略直交するように形成される。そして、フィルタボディ１８は、その第１当接部１０２がハウジング１２における接続端２８と当接することで、ハウジング１２の一端部に対して所定の位置へと位置決めされた状態で溶着等によって互いに接続される。 The body main body 94 is provided so as to be substantially coaxial with the fuel pump 14 with respect to one end portion of the housing 12, the first abutting portion 102 is annular at the end facing the housing 12, and the body main body 94. It is formed so as to be substantially orthogonal to the axis. The filter body 18 is connected to each other by welding or the like in a state where the first abutting portion 102 abuts the connection end 28 in the housing 12 and is positioned at a predetermined position with respect to one end portion of the housing 12. Is done.

これにより、連結部２４がフィルタボディ１８の内部に挿入された状態で、ハウジング１２の一端部にフィルタボディ１８が接続され、前記ハウジング１２の吸入通路２６を通じてフィルタボディ１８の内部と燃料ポンプ１４のポンプ室７０とが連通する。 Thus, the filter body 18 is connected to one end of the housing 12 in a state where the connecting portion 24 is inserted into the filter body 18, and the inside of the filter body 18 and the fuel pump 14 are connected through the suction passage 26 of the housing 12. The pump chamber 70 communicates.

一方、ボディ本体９４の内部には、ホルダ１０４を介して円筒状のフィルタ１６が装着され、このホルダ１０４の中央がハウジング１２の連結部２４に保持されることで、前記フィルタ１６が燃料ポンプ１４の吸入管７８と同軸状となるように保持されると共に、前記フィルタ１６の内部に吸入通路２６が開口した状態となる。このフィルタ１６は、燃料供給管９６からフィルタボディ１８内へ導入される燃料中の塵埃等を除去する目的で設けられている。 On the other hand, a cylindrical filter 16 is mounted inside the body main body 94 via a holder 104, and the center of the holder 104 is held by the connecting portion 24 of the housing 12, so that the filter 16 is connected to the fuel pump 14. The suction pipe 26 is held coaxially with the suction pipe 78, and the suction passage 26 is opened inside the filter 16. The filter 16 is provided for the purpose of removing dust and the like in the fuel introduced from the fuel supply pipe 96 into the filter body 18.

燃料供給管９６は、ボディ本体９４の外周面から該ボディ本体９４の軸線と直交方向に延在した管状に形成され、図示しない配管を介して燃料タンクと接続されている（図２参照）。そして、燃料タンク中の燃料が燃料供給管９６を通じてフィルタボディ１８の内部へと導入され、フィルタ１６を通過することで塵埃等が除去された後、吸入通路２６を通じて燃料ポンプ１４へと吸入される。 The fuel supply pipe 96 is formed in a tubular shape extending from the outer peripheral surface of the body main body 94 in a direction orthogonal to the axis of the body main body 94, and is connected to a fuel tank via a pipe (not shown) (see FIG. 2). Then, the fuel in the fuel tank is introduced into the filter body 18 through the fuel supply pipe 96, and dust and the like are removed by passing through the filter 16, and then sucked into the fuel pump 14 through the suction passage 26. .

燃料排出管９８は、燃料供給管９６と同様にボディ本体９４の外周面から該ボディ本体９４の軸線と直交方向に延在した管状に形成され、前記燃料供給管９６と所定間隔離間して略平行に形成される（図５参照）。この燃料排出管９８は、ボディ本体９４及び燃料供給管９６と非連通に設けられると共に、後述するハウジング１２の連通路４４を通じて排出室３８と連通している。 Similar to the fuel supply pipe 96, the fuel discharge pipe 98 is formed in a tubular shape extending from the outer peripheral surface of the body main body 94 in a direction orthogonal to the axis of the body main body 94, and is substantially spaced apart from the fuel supply pipe 96 by a predetermined distance. They are formed in parallel (see FIG. 5). The fuel discharge pipe 98 is provided not in communication with the body main body 94 and the fuel supply pipe 96 and communicates with the discharge chamber 38 through a communication passage 44 of the housing 12 described later.

また、燃料排出管９８には、図５に示されるように、フィルタボディ１８から図示しない燃料タンク側への燃料の流れのみを許容する第２チェック弁１０６が設けられている。第２チェック弁１０６は、燃料排出管９８内に設けられたスプリング１０８の弾発作用下に弁座１１０側に向かって常に付勢され、この弁座１１０へと着座することで燃料タンクから排出室３８側への塵埃等の進入を防止し、前記燃料排出管９８に連通路４４側から供給される燃料の圧力によって弁座１１０から離間することで弁閉状態から開放される。 Further, as shown in FIG. 5, the fuel discharge pipe 98 is provided with a second check valve 106 that allows only the flow of fuel from the filter body 18 to a fuel tank (not shown). The second check valve 106 is always urged toward the valve seat 110 under the elastic action of a spring 108 provided in the fuel discharge pipe 98, and is discharged from the fuel tank by being seated on the valve seat 110. The entry of dust or the like to the chamber 38 side is prevented, and the valve is released from the valve closed state by being separated from the valve seat 110 by the pressure of fuel supplied from the communication passage 44 side to the fuel discharge pipe 98.

そして、燃料排出管９８は、図示しない配管を介して燃料タンクと接続され、排出室３８へと排出された余剰燃料の圧力によって第２チェック弁１０６が弁開することで、前記燃料排出管９８を通じて燃料が前記燃料タンクへと戻される。 The fuel discharge pipe 98 is connected to a fuel tank via a pipe (not shown), and the second check valve 106 is opened by the pressure of excess fuel discharged to the discharge chamber 38, whereby the fuel discharge pipe 98 is discharged. Through which fuel is returned to the fuel tank.

隔壁部材２０は、例えば、樹脂製材料から形成され、ハウジング１２における他端部の開口部３０内に収納され、この他端部の第１接続端３２と略同一平面状となるベース部１１２と、このベース部１１２に対して軸方向（矢印Ａ、Ｂ方向）に突出した第１〜第３保持部１１４、１１６、１１８とを含む。 The partition member 20 is formed of, for example, a resin material, and is accommodated in the opening 30 at the other end of the housing 12. The base 112 is substantially flush with the first connection end 32 at the other end. The first to third holding portions 114, 116, and 118 projecting in the axial direction (the directions of arrows A and B) with respect to the base portion 112.

ベース部１１２は、例えば、プレート状に形成され、その外縁部がハウジング１２の内周面に臨むように該ハウジング１２の内部に収納され、前記外縁部の一端部がハウジング１２の開口部３０に臨んだ係合段部１２０へと挿入され当接する。これにより、ベース部１１２は、ハウジング１２に対して軸方向に位置決めされると共に、前記ベース部１１２の他端面に形成された第２接続端１２２がハウジング１２の第１接続端３２と略同一面となる。すなわち、ハウジング１２の係合段部１２０は、隔壁部材２０の軸方向及び径方向への位置決めを行う位置決め手段として機能する。 The base portion 112 is formed in a plate shape, for example, and is housed inside the housing 12 so that the outer edge portion faces the inner peripheral surface of the housing 12, and one end portion of the outer edge portion is formed in the opening 30 of the housing 12. It is inserted into and brought into contact with the engaging stepped portion 120 that has come. Accordingly, the base portion 112 is positioned in the axial direction with respect to the housing 12, and the second connection end 122 formed on the other end surface of the base portion 112 is substantially flush with the first connection end 32 of the housing 12. It becomes. That is, the engagement step portion 120 of the housing 12 functions as a positioning unit that positions the partition member 20 in the axial direction and the radial direction.

この第２接続端１２２は、ベース部１１２に対してカバー部材２２側（矢印Ｂ方向）へと所定高さだけ突出して環状に形成され、外縁部側に形成された第２溶着部１２４と、環状溝を挟んで前記第２溶着部１２４の径方向内側に形成された第２位置規制部１２６とを有し、前記第２溶着部１２４及び前記第２位置規制部１２６の端面が略同一平面となるように形成される。 The second connection end 122 protrudes from the base portion 112 toward the cover member 22 (in the direction of arrow B) by a predetermined height, is formed in an annular shape, and a second welded portion 124 formed on the outer edge side, And a second position restricting portion 126 formed on the radially inner side of the second welded portion 124 with an annular groove interposed therebetween, and the end surfaces of the second welded portion 124 and the second position restricting portion 126 are substantially flush. It is formed to become.

そして、隔壁部材２０がハウジング１２の開口部３０へと収納された際、第２溶着部１２４とハウジング１２の第１溶着部３６とが隣接するように配置されると共に、前記第１及び第２溶着部３６、１２４、第１及び第２位置規制部３４、１２６が全て略同一平面となるように形成される。 When the partition member 20 is stored in the opening 30 of the housing 12, the second welded portion 124 and the first welded portion 36 of the housing 12 are disposed adjacent to each other, and the first and second portions are disposed. The welded portions 36 and 124 and the first and second position restricting portions 34 and 126 are formed so as to be substantially on the same plane.

第１〜第３保持部１１４、１１６、１１８は、それぞれハウジング１２の軸方向（矢印Ａ、Ｂ方向）に沿った円筒状に形成され、ベース部１１２の中心に対して径方向外側にそれぞれ設けられると共に、該ベース部１１２の周方向に沿って互いに離間するように形成される。 The first to third holding portions 114, 116, 118 are each formed in a cylindrical shape along the axial direction (arrow A, B direction) of the housing 12, and are respectively provided radially outward with respect to the center of the base portion 112. And formed so as to be separated from each other along the circumferential direction of the base portion 112.

第１保持部（挿入孔）１１４には、燃料ポンプ１４における吐出部５８の円筒部８６が内部に挿入されることで保持され、第２保持部１１６には、図３に示されるようにハウジング１２の吐出通路４６の端部が挿入され、後述するカバー部材２２の高圧燃料室１４２とそれぞれ連通している。 The first holding portion (insertion hole) 114 holds the cylindrical portion 86 of the discharge portion 58 of the fuel pump 14 by being inserted therein, and the second holding portion 116 holds the housing as shown in FIG. 12 end portions of the discharge passages 46 are inserted and communicated with a high-pressure fuel chamber 142 of the cover member 22 described later.

また、第３保持部１１８は、図４に示されるように、ハウジング１２の排出室３８側（矢印Ａ方向）に向かって突出し、その中心には軸方向（矢印Ａ、Ｂ方向）に貫通した連通孔１２８が形成され、カバー部材２２の高圧燃料室１４２及び排出室３８と連通すると共にプレッシャレギュレータ１３０が装着されている。 Further, as shown in FIG. 4, the third holding portion 118 protrudes toward the discharge chamber 38 side (arrow A direction) of the housing 12, and penetrates the center in the axial direction (arrow A, B direction). A communication hole 128 is formed, communicates with the high-pressure fuel chamber 142 and the discharge chamber 38 of the cover member 22 and is equipped with a pressure regulator 130.

このプレッシャレギュレータ１３０は、連通孔１２８の段部に着座自在な弁体１３２と、この弁体１３２を段部側に向かって付勢するスプリング１３４とを有し、前記弁体１３２がスプリング１３４の弾発力によって段部に着座することで前記連通孔１２８を通じた高圧燃料室１４２と排出室３８との連通が遮断された弁閉状態となる。 The pressure regulator 130 includes a valve body 132 that can be seated on a step portion of the communication hole 128, and a spring 134 that urges the valve body 132 toward the step portion side. By sitting on the stepped portion by the elastic force, the valve closed state in which the communication between the high-pressure fuel chamber 142 and the discharge chamber 38 through the communication hole 128 is blocked.

一方、プレッシャレギュレータ１３０は、高圧燃料室１４２から連通孔１２８へと流入する燃料の圧力によって弁体１３２が押圧されることで弁開状態となり、燃料（余剰燃料）が高圧燃料室１４２から排出室３８へと流れる。 On the other hand, the pressure regulator 130 is opened when the valve element 132 is pressed by the pressure of fuel flowing from the high pressure fuel chamber 142 into the communication hole 128, and fuel (surplus fuel) is discharged from the high pressure fuel chamber 142 to the discharge chamber. It flows to 38.

カバー部材２２は、例えば、樹脂製材料からプレート状に形成され、ハウジング１２及び隔壁部材２０の他端部を覆うように装着され、前記ハウジング１２の第１接続端３２及び前記隔壁部材２０の第２接続端１２２に当接する第２当接部１３６を有している。 The cover member 22 is formed, for example, in a plate shape from a resin material, and is mounted so as to cover the other end portions of the housing 12 and the partition member 20, and the first connection end 32 of the housing 12 and the first of the partition member 20. The second contact portion 136 is in contact with the two connection ends 122.

この第２当接部１３６は、カバー部材２２の外縁部近傍に環状に形成され、ハウジング１２及び隔壁部材２０に溶着される溶着部１３８と、この溶着部１３８に対して環状溝を挟んで径方向外側及び径方向内側に形成された一組の位置規制部１４０とを有する。 The second contact portion 136 is formed in an annular shape in the vicinity of the outer edge portion of the cover member 22, a welded portion 138 welded to the housing 12 and the partition wall member 20, and a diameter across the annular groove with respect to the welded portion 138. And a pair of position restricting portions 140 formed on the outer side in the direction and the inner side in the radial direction.

この溶着部１３８及び位置規制部１４０の端面は、ハウジング１２及び隔壁部材２０に組み付けられた状態において略同一平面となるように形成され、位置規制部１４０は、前記ハウジング１２の第１位置規制部３４及び隔壁部材２０の第２位置規制部１２６にそれぞれ当接することで軸方向（矢印Ａ、Ｂ方向）に互いに位置決めされ、溶着部１３８がハウジング１２の第１溶着部３６及び隔壁部材２０の第２溶着部１２４に当接して溶着されることで互いに接続される。 The end surfaces of the welded portion 138 and the position restricting portion 140 are formed so as to be substantially in the same plane when assembled to the housing 12 and the partition wall member 20, and the position restricting portion 140 is the first position restricting portion of the housing 12. 34 and the second position restricting portion 126 of the partition wall member 20 are respectively positioned in the axial direction (directions of arrows A and B), and the welded portion 138 is the first welded portion 36 of the housing 12 and the first position of the partition wall member 20. The two welded parts 124 are connected to each other by being abutted and welded.

また、カバー部材２２には、隔壁部材２０側となる端面が凹状に窪み、この隔壁部材２０のベース部１１２との間に高圧燃料室１４２が形成される。この高圧燃料室１４２には、第１保持部１１４を介して燃料ポンプ１４の吐出部５８が接続され燃料出口８８と連通すると共に、第２保持部１１６を介して吐出通路４６と連通すると共に、第３保持部１１８を介してプレッシャレギュレータ１３０の装着された連通孔１２８と連通している。 Further, the cover member 22 has a concave end surface on the partition member 20 side, and a high-pressure fuel chamber 142 is formed between the cover member 22 and the base portion 112 of the partition member 20. A discharge part 58 of the fuel pump 14 is connected to the high-pressure fuel chamber 142 via the first holding part 114 and communicates with the fuel outlet 88, and communicates with the discharge passage 46 via the second holding part 116. The third holding portion 118 communicates with the communication hole 128 in which the pressure regulator 130 is mounted.

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、ハウジング１２に対して隔壁部材２０及びカバー部材２２を組み付ける場合について説明する。なお、隔壁部材２０には、その第３保持部１１８にプレッシャレギュレータ１３０が予め組み付けられた状態とする。 The fuel supply device 10 according to the embodiment of the present invention is basically configured as described above. Next, a case where the partition member 20 and the cover member 22 are assembled to the housing 12 will be described. . In the partition member 20, the pressure regulator 130 is assembled in advance to the third holding portion 118 thereof.

先ず、ハウジング１２の内部に燃料ポンプ１４が収納され、その吸入管７８が連結部２４の吸入通路２６へと挿入された状態とすることで一端部側（矢印Ａ方向）が支持され、前記ハウジング１２の開口部３０に隔壁部材２０を挿入し、同時に燃料ポンプ１４の吐出部５８を第１保持部１１４へと挿入すると共にベース部１１２の外縁部を係合段部１２０へと係合させる。 First, the fuel pump 14 is housed inside the housing 12, and the suction pipe 78 is inserted into the suction passage 26 of the connecting portion 24 so that one end side (in the direction of arrow A) is supported. The partition member 20 is inserted into the 12 opening portions 30, and at the same time, the discharge portion 58 of the fuel pump 14 is inserted into the first holding portion 114 and the outer edge portion of the base portion 112 is engaged with the engagement step portion 120.

これにより、ハウジング１２に対して隔壁部材２０が係合段部１２０によって径方向及び軸方向に位置決めされ第１接続端３２と第２接続端１２２とが略同一平面状となった仮組み状態となる。また、隔壁部材２０によって燃料ポンプ１４の他端部側（矢印Ｂ方向）が保持されることで、ハウジング１２内において燃料ポンプ１４の吐出部５８を容易且つ確実に接続可能となる。 Thereby, the partition member 20 is positioned in the radial direction and the axial direction by the engagement step portion 120 with respect to the housing 12, and the first connection end 32 and the second connection end 122 are substantially coplanar. Become. Further, the other end side (in the direction of arrow B) of the fuel pump 14 is held by the partition member 20, so that the discharge part 58 of the fuel pump 14 can be easily and reliably connected in the housing 12.

次に、上述したハウジング１２及び隔壁部材２０からなる仮組み体Ｓとカバー部材２２とを互いに接続する場合について図６Ａ〜図６Ｃを参照しながら説明する。なお、ここでは、例えば、ヒータ等によって加熱された熱板Ｈを用いて溶着を行う熱板溶着を行う場合について説明する。 Next, a case where the temporary assembly S composed of the housing 12 and the partition wall member 20 and the cover member 22 are connected to each other will be described with reference to FIGS. 6A to 6C. Here, for example, a case where hot plate welding is performed using a hot plate H heated by a heater or the like will be described.

最初に、互いに溶着される前のハウジング１２、隔壁部材２０及びカバー部材２２について図６Ａを参照しながら説明する。 First, the housing 12, the partition member 20, and the cover member 22 before being welded to each other will be described with reference to FIG. 6A.

このハウジング１２における第１溶着部３６は、第１位置規制部３４に対して軸方向（カバー部材２２側、矢印Ｂ方向）に若干だけ高く突出して形成され、隔壁部材２０における第２溶着部１２４は、第２位置規制部１２６に対して軸方向（カバー部材２２側、矢印Ｂ方向）に若干だけ高く突出して形成され、一方、カバー部材２２における溶着部１３８は、ハウジング１２及び隔壁部材２０側（矢印Ａ方向）に向かって位置規制部１４０よりも若干だけ高く突出して形成される。 The first welded portion 36 in the housing 12 is formed to protrude slightly higher in the axial direction (the cover member 22 side, the arrow B direction) than the first position restricting portion 34, and the second welded portion 124 in the partition wall member 20. Is formed so as to protrude slightly higher in the axial direction (cover member 22 side, arrow B direction) than the second position restricting portion 126, while the welded portion 138 in the cover member 22 is formed on the housing 12 and the partition member 20 side. It is formed to protrude slightly higher than the position restricting portion 140 in the direction of arrow A.

すなわち、溶着される第１及び第２溶着部３６、１２４、溶着部１３８が、若干だけ高く形成され、第１溶着部３６及び第１位置規制部３４、第２溶着部１２４及び第２位置規制部１２６、溶着部１３８及び位置規制部１４０が、それぞれ段差状に形成されている。 That is, the first and second welded parts 36 and 124 and the welded part 138 to be welded are formed slightly higher, and the first welded part 36 and the first position restricting part 34, the second welded part 124 and the second position restricting part are formed. The portion 126, the welded portion 138, and the position restricting portion 140 are formed in steps.

例えば、図６Ａに示されるように、ハウジング１２及び隔壁部材２０からなる仮組み体Ｓを、その第１接続端３２及び第２接続端１２２が上方（矢印Ｂ方向）となるように配置すると共に、カバー部材２２を前記仮組み体Ｓに臨むように上方に所定間隔離間させて配置する。そして、カバー部材２２と仮組み体Ｓとの間に、例えば、ヒータ等によって所定温度に加熱された平板状の熱板Ｈを水平方向に挿入し、前記第１及び第２接続端３２、１２２、前記カバー部材２２と略平行に配置する。すなわち、熱板Ｈを挟んで仮組み体Ｓとカバー部材２２とが上下方向（矢印Ａ、Ｂ方向）に離間して配置されている。 For example, as shown in FIG. 6A, the temporary assembly S composed of the housing 12 and the partition wall member 20 is disposed so that the first connection end 32 and the second connection end 122 are upward (in the direction of arrow B). The cover member 22 is arranged at a predetermined distance upward so as to face the temporary assembly S. Then, between the cover member 22 and the temporary assembly S, for example, a flat hot plate H heated to a predetermined temperature by a heater or the like is inserted in the horizontal direction, and the first and second connection ends 32 and 122 are inserted. The cover member 22 is disposed substantially in parallel. That is, the temporary assembly S and the cover member 22 are spaced apart in the vertical direction (arrows A and B directions) with the hot plate H interposed therebetween.

次に、図６Ｂに示されるように、図示しない治具に把持された仮組み体Ｓを熱板Ｈに対して略平行な状態を維持しつつ接近させると同時に、別の図示しない治具によって把持されたカバー部材２２を前記熱板Ｈに対して略平行な状態を維持しつつ接近させる。そして、仮組み体Ｓにおける第１及び第２溶着部３６、１２４、カバー部材２２における溶着部１３８をそれぞれ熱板Ｈに対して当接させる。 Next, as shown in FIG. 6B, the temporary assembly S held by a jig (not shown) is brought close to the hot plate H while maintaining a substantially parallel state, and at the same time, another jig (not shown) is used. The gripped cover member 22 is brought close to the hot plate H while maintaining a substantially parallel state. Then, the first and second welded portions 36 and 124 in the temporary assembly S and the welded portion 138 in the cover member 22 are brought into contact with the hot plate H, respectively.

この際、ハウジング１２の第１位置規制部３４、隔壁部材２０の第２位置規制部１２６、カバー部材２２の位置規制部１４０は、それぞれ第１及び第２溶着部３６、１２４、溶着部１３８よりも高さが低く形成されているため、熱板Ｈに接することがない。 At this time, the first position restricting portion 34 of the housing 12, the second position restricting portion 126 of the partition wall member 20, and the position restricting portion 140 of the cover member 22 are from the first and second welding portions 36 and 124 and the welding portion 138, respectively. Is not formed in contact with the hot plate H.

そして、上述した第１及び第２溶着部３６、１２４、溶着部１３８をそれぞれ熱板Ｈに当接させた状態で所定時間だけ加熱することにより、前記第１及び第２溶着部３６、１２４、前記溶着部１３８の端部が加熱されて溶融した状態となる。 Then, by heating the first and second welded portions 36 and 124 and the welded portion 138, which are in contact with the hot plate H, for a predetermined time, the first and second welded portions 36 and 124, The end of the welded portion 138 is heated and melted.

次に、所定時間加熱した仮組み体Ｓ及びカバー部材２２をそれぞれ熱板Ｈから離間させるように移動させる。すなわち、仮組み体Ｓとカバー部材２２とを反対方向に向かってそれぞれ移動させる。その後、熱板Ｈを水平方向に移動させ、仮組み体Ｓとカバー部材２２との間から取り除く。 Next, the temporary assembly S and the cover member 22 heated for a predetermined time are moved away from the hot plate H, respectively. That is, the temporary assembly S and the cover member 22 are moved in opposite directions. Thereafter, the hot plate H is moved in the horizontal direction and removed from between the temporary assembly S and the cover member 22.

最後に、図６Ｃに示されるように、仮組み体Ｓとカバー部材２２とを再び互いに接近するように上下方向に移動させ、第１及び第２位置規制部３４、１２６と、カバー部材２２の位置規制部１４０をそれぞれ当接させることで互いに所定位置に位置決めされ、同時に溶融している第１及び第２溶着部３６、１２４とカバー部材２２の溶着部１３８とを当接させることで、溶融している端部同士が溶着される。 Finally, as shown in FIG. 6C, the temporary assembly S and the cover member 22 are moved up and down so as to approach each other again, and the first and second position restricting portions 34 and 126 and the cover member 22 are moved. The first and second welding parts 36 and 124 that are positioned at predetermined positions by bringing the position restricting parts 140 into contact with each other and are simultaneously melted are brought into contact with the welding parts 138 of the cover member 22 to be melted. The ends that are connected are welded together.

これにより、ハウジング１２の第１接続端３２、隔壁部材２０の第２接続端１２２に対してカバー部材２２の第２当接部１３６がそれぞれ同時に溶着されて接続されることで、前記ハウジング１２及び前記隔壁部材２０に対する前記カバー部材２２の組み付け作業が完了する。 Accordingly, the second contact portion 136 of the cover member 22 is simultaneously welded and connected to the first connection end 32 of the housing 12 and the second connection end 122 of the partition wall member 20, respectively. The assembly work of the cover member 22 to the partition member 20 is completed.

すなわち、１回の溶着工程において、ハウジング１２、該ハウジング１２の内部に収納される隔壁部材２０及び前記ハウジング１２の開口部３０を覆うカバー部材２２を互いに固定することが可能となる。 That is, it is possible to fix the housing 12, the partition member 20 accommodated in the housing 12, and the cover member 22 covering the opening 30 of the housing 12 to each other in one welding step.

なお、ハウジング１２の一端部側に形成された接続端２８とフィルタボディ１８の第１当接部１０２とを、上述した同様の方法で溶着して接続するようにしてもよい。 The connection end 28 formed on the one end side of the housing 12 and the first contact portion 102 of the filter body 18 may be welded and connected in the same manner as described above.

このようなハウジング１２、隔壁部材２０及びカバー部材２２の組み付け方法では、燃料ポンプ１４の吐出部５８を隔壁部材２０の第１保持部１１４へと挿入することで、作業者が前記燃料ポンプ１４と前記隔壁部材２０とを組み付ける場合、例えば、前記燃料ポンプ１４が一端部側を支点として傾いて吐出部５８と第１保持部１１４とがずれてしまっていても、前記燃料ポンプ１４の軸ずれを手で矯正しながら吐出部５８と第１保持部１１４とを同軸状となるように、容易且つ確実に位置決めを行って接続することが可能となる。 In such a method of assembling the housing 12, the partition member 20, and the cover member 22, an operator can connect the fuel pump 14 with the fuel pump 14 by inserting the discharge portion 58 of the fuel pump 14 into the first holding portion 114 of the partition member 20. When the partition member 20 is assembled, for example, even if the fuel pump 14 is inclined with the one end side as a fulcrum and the discharge part 58 and the first holding part 114 are displaced, the axial displacement of the fuel pump 14 is reduced. It is possible to easily and surely position and connect the discharge unit 58 and the first holding unit 114 so as to be coaxial while correcting by hand.

また、この仮組み状態とすることで燃料ポンプ１４が隔壁部材２０によって予めハウジング１２に対して所定位置に位置決めされるため、前記ハウジング１２及び隔壁部材２０と前記カバー部材２２との溶着作業を前記燃料ポンプ１４の軸ずれを考慮することなく確実且つ効率的に行うことができる。 Further, since the fuel pump 14 is positioned at a predetermined position with respect to the housing 12 by the partition member 20 in this temporarily assembled state, the welding operation of the housing 12 and the partition member 20 and the cover member 22 is performed. This can be carried out reliably and efficiently without considering the axial displacement of the fuel pump 14.

次に、上述したように組み付けられた燃料供給装置１０の動作について説明する。 Next, the operation of the fuel supply device 10 assembled as described above will be described.

この燃料供給装置１０において、図示しないコントローラからの制御信号がコネクタ部５０、リード線８２、給電端子８０を通じて燃料ポンプ１４へと出力され、モータ部５６のロータ（図示せず）が回転駆動することでシャフト６６を介してポンプ部５４のインペラ６４がポンプ室７０で回転駆動する。そして、このインペラ６４の回転によってフィルタボディ１８の内部に導入されている燃料がフィルタ１６を通過した後に、吸入通路２６及び吸入管７８の吸入口７２を通じてポンプ室７０の内部へと吸入される。 In the fuel supply device 10, a control signal from a controller (not shown) is output to the fuel pump 14 through the connector portion 50, the lead wire 82, and the power supply terminal 80, and the rotor (not shown) of the motor portion 56 is rotationally driven. Thus, the impeller 64 of the pump unit 54 is rotationally driven in the pump chamber 70 via the shaft 66. Then, the fuel introduced into the filter body 18 by the rotation of the impeller 64 passes through the filter 16 and is then sucked into the pump chamber 70 through the suction passage 26 and the suction port 72 of the suction pipe 78.

この吸入口７２から吸入された燃料は、ポンプ室７０においてポンプ流路７４を通じてポンプカバー６２に沿って周方向へと流れることで徐々に圧力が上昇すると共に、その気体成分が脱気孔７６を通じて外部へと排出された後、ポンプボディ６０の吐出口６８へと流通して高圧となった燃料が吐出される。 The fuel sucked from the suction port 72 flows in the circumferential direction along the pump cover 62 through the pump flow path 74 in the pump chamber 70, and the pressure gradually rises. After being discharged, the fuel that has flowed to the discharge port 68 of the pump body 60 and became high pressure is discharged.

この吐出口６８から吐出された燃料は、モータ部５６の内部空間を通じて吐出部５８の燃料出口８８まで流れ、第１チェック弁９０を押圧して弁開状態とすることで前記燃料出口８８からカバー部材２２側へと吐出される。この高圧となった燃料は、図３に示されるカバー部材２２の高圧燃料室１４２、ハウジング１２の吐出通路４６及び吐出管４８を通じて外部へと吐出され、図示しない配管を通じて内燃機関のインジェクタへと供給される。 The fuel discharged from the discharge port 68 flows through the internal space of the motor unit 56 to the fuel outlet 88 of the discharge unit 58 and presses the first check valve 90 to open the valve, thereby covering the fuel outlet 88. It discharges to the member 22 side. The high pressure fuel is discharged to the outside through the high pressure fuel chamber 142 of the cover member 22 shown in FIG. 3, the discharge passage 46 and the discharge pipe 48 of the housing 12, and is supplied to the injector of the internal combustion engine through a pipe (not shown). Is done.

一方、燃料ポンプ１４から吐出され余剰となった燃料は、図４に示される高圧燃料室１４２において所定の圧力より高くなることで、プレッシャレギュレータ１３０の弁体１３２を押圧して弁開状態とし、余剰燃料が前記プレッシャレギュレータ１３０を通じて加圧状態で排出室３８へと流入する。また、排出室３８には、燃料ポンプ１４のポンプ流路７４から脱気孔７６を通じて排出された気体燃料成分が加圧状態で流入している。この排出室３８内の液体燃料成分は、図５に示される排出通路４２を通じて連通路４４から燃料排出管９８へと流れ、第２チェック弁１０６を押し上げて開放状態とすることで、図示しない配管を通じて燃料タンクへと戻される。 On the other hand, surplus fuel discharged from the fuel pump 14 becomes higher than a predetermined pressure in the high-pressure fuel chamber 142 shown in FIG. 4, thereby pressing the valve element 132 of the pressure regulator 130 to open the valve, Excess fuel flows into the discharge chamber 38 through the pressure regulator 130 in a pressurized state. The gaseous fuel component discharged from the pump flow path 74 of the fuel pump 14 through the deaeration hole 76 flows into the discharge chamber 38 in a pressurized state. The liquid fuel component in the discharge chamber 38 flows from the communication passage 44 to the fuel discharge pipe 98 through the discharge passage 42 shown in FIG. 5 and pushes up the second check valve 106 to open the pipe, which is not shown. Is returned to the fuel tank.

以上のように、本実施の形態では、燃料供給装置１０において、燃料ポンプ１４の収納されるハウジング１２と、該ハウジング１２の内部に収納され該燃料ポンプ１４の吐出部５８及びプレッシャレギュレータ１３０を保持する隔壁部材２０と、前記ハウジング１２の他端部に開口した開口部３０を閉塞するカバー部材２２とを備え、前記カバー部材２２に臨むハウジング１２の他端部には、軸線に対して直交した第１接続端３２が形成され、該カバー部材２２に臨む隔壁部材２０の端面には、前記軸線に対して直交した第２接続端１２２が形成され、前記第１及び第２接続端３２、１２２が略同一平面上に形成される。 As described above, in the present embodiment, in the fuel supply device 10, the housing 12 in which the fuel pump 14 is accommodated, and the discharge portion 58 of the fuel pump 14 and the pressure regulator 130 that are accommodated in the housing 12 are retained. And a cover member 22 that closes the opening 30 opened at the other end of the housing 12, and the other end of the housing 12 facing the cover member 22 is orthogonal to the axis. A first connection end 32 is formed, and a second connection end 122 orthogonal to the axis is formed on an end surface of the partition wall member 20 facing the cover member 22, and the first and second connection ends 32, 122 are formed. Are formed on substantially the same plane.

そして、カバー部材２２を、それぞれハウジング１２の第１接続端３２、隔壁部材２０の第２接続端１２２へと当接させた状態で互いに溶着することで、１回の溶着工程によって第１及び第２接続端３２、１２２の２カ所を同時に接続できる。その結果、ハウジング１２及び隔壁部材２０における第１及び第２溶着部３６、１２４を該ハウジング１２の軸方向において同一位置（同一面）とすることで、２回の溶着工程で第１及び第２ケース、支持部材を順番に溶着して接続していた従来技術に係る燃料供給装置と比較し、溶着工程の短縮化を図ることで製造性の向上が可能となる。 Then, the cover member 22 is welded to the first connection end 32 of the housing 12 and the second connection end 122 of the partition wall member 20 so as to be welded to each other. Two connection ends 32 and 122 can be connected simultaneously. As a result, the first and second welding portions 36 and 124 in the housing 12 and the partition wall member 20 are set to the same position (same surface) in the axial direction of the housing 12, so that the first and second welding steps are performed twice. Compared with the fuel supply apparatus according to the prior art in which the case and the support member are welded and connected in order, the productivity can be improved by shortening the welding process.

また、燃料ポンプ１４の給電端子８０に接続されるリード線８２を、ハウジング１２と隔壁部材２０との間の排出室３８内に配置することで、前記隔壁部材２０を前記ハウジング１２の他端部に対して作業者が組み付ける際、前記リード線８２を前記隔壁部材２０と前記ハウジング１２との間に確実に収めることができ、しかも、前記ハウジング１２と前記隔壁部材２０とカバー部材２２とを溶着する際に、第１溶着部３６、第２溶着部１２４、溶着部１３８に対して前記リード線８２が挟まれてしまうことを防止でき、前記リード線８２の挟み込みを考慮することなく確実且つ効率的に溶着作業を行うことができる。 Further, by arranging the lead wire 82 connected to the power supply terminal 80 of the fuel pump 14 in the discharge chamber 38 between the housing 12 and the partition wall member 20, the partition wall member 20 is connected to the other end of the housing 12. When the operator attaches the lead wire 82 to the partition member 20 and the housing 12, the housing 12, the partition member 20 and the cover member 22 are welded together. In this case, the lead wire 82 can be prevented from being sandwiched between the first welded portion 36, the second welded portion 124, and the welded portion 138, and the lead wire 82 can be reliably and efficiently taken into consideration. Welding operation can be performed.

なお、本発明に係る燃料供給装置の製造方法は、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。
The manufacturing method of the fuel supply equipment according to the present invention is not limited to the above embodiments without departing from the gist of the present invention, it is should be understood that various configurations.

１０…燃料供給装置１２…ハウジング
１４…燃料ポンプ１６…フィルタ
１８…フィルタボディ２０…隔壁部材
２２…カバー部材３０…開口部
３２…第１接続端３４…第１位置規制部
３６…第１溶着部３８…排出室
５４…ポンプ部５６…モータ部
５８…吐出部１０２…第１当接部
１２０…係合段部１２２…第２接続端
１２４…第２溶着部１２６…第２位置規制部
１３０…プレッシャレギュレータ１３６…第２当接部
１３８…溶着部１４０…位置規制部
１４２…高圧燃料室Ｈ…熱板
Ｓ…仮組み体 DESCRIPTION OF SYMBOLS 10 ... Fuel supply apparatus 12 ... Housing 14 ... Fuel pump 16 ... Filter 18 ... Filter body 20 ... Partition member 22 ... Cover member 30 ... Opening part 32 ... 1st connection end 34 ... 1st position control part 36 ... 1st welding part 38 ... Discharge chamber 54 ... Pump part 56 ... Motor part 58 ... Discharge part 102 ... 1st contact part 120 ... Engagement step part 122 ... 2nd connection end 124 ... 2nd welding part 126 ... 2nd position control part 130 ... Pressure regulator 136 ... second contact portion 138 ... welding portion 140 ... position regulating portion 142 ... high pressure fuel chamber H ... hot plate S ... temporary assembly

Claims

In a method for manufacturing a fuel supply device disposed outside a fuel tank mounted on a vehicle,
A housing having an opening on the discharge side of the fuel pump housed inside;
A cover member that closes the opening;
A partition member having a high-pressure fuel chamber connected to the discharge portion and communicating with a pressure regulator or an internal combustion engine between the cover member,
A discharge chamber that is formed between the housing and the partition member, accommodates the fuel pump, and discharges excess fuel in the high-pressure fuel chamber by the pressure regulator;
With
A first welded portion for connecting the end on the opening side of the housing and the cover member by welding;
A second welding part for connecting the partition member and the cover member by welding at an outer edge part of the high-pressure fuel chamber;
Have
Wherein the first weld portion and said second weld portion is Ri Do and on the same plane at the end of the opening side,
By inserting the discharge part of the fuel pump into the insertion hole of the partition member, the partition member is positioned in the casing, and between the connector part formed on the casing and the terminal of the fuel pump. A first step of arranging a lead wire to be connected in the discharge chamber, which is a closed space formed by the connection between the partition wall member and the housing;
A second step of welding the cover member to the partition member and the housing;
A method for manufacturing a fuel supply apparatus, comprising: