WO2022050906A1 - An engagement structure of a fuel pump cover for a vehicle - Google Patents

An engagement structure of a fuel pump cover for a vehicle Download PDF

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Publication number
WO2022050906A1
WO2022050906A1 PCT/TH2020/000063 TH2020000063W WO2022050906A1 WO 2022050906 A1 WO2022050906 A1 WO 2022050906A1 TH 2020000063 W TH2020000063 W TH 2020000063W WO 2022050906 A1 WO2022050906 A1 WO 2022050906A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel pump
arm extension
connecting member
attaching portion
pump cover
Prior art date
Application number
PCT/TH2020/000063
Other languages
French (fr)
Inventor
Theeradesh RITHIKRAIKRIANG
Original Assignee
Asian Honda Motor Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asian Honda Motor Co., Ltd. filed Critical Asian Honda Motor Co., Ltd.
Priority to BR112023003402A priority Critical patent/BR112023003402A2/en
Priority to PCT/TH2020/000063 priority patent/WO2022050906A1/en
Publication of WO2022050906A1 publication Critical patent/WO2022050906A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks

Definitions

  • the present invention relates to an engagement structure of a fuel pump cover for a vehicle.
  • a fuel pump apparatus has a fuel pump, a filter case that is positioned above the fuel pump to cover parts such as a pressure regulator, and a stopper that is positioned above the filter case to cover the upper portion of the filter case, as disclosed in US Publication of Unexamined Patent Application No. US2009/0000601A1 hereinafter called PTL1.
  • the stopper is mounted to a stay of the filter case by a screw so that the filter case is prevented from being pulled out upwardly.
  • a fuel pump apparatus has a fuel pump, a holder that covers a fuel pump and is formed with hole portions in its upper surface, and a cover which has attaching portions which are inserted into the hole portions respectively and is directly mounted on the upper surface of the holder, as disclosed in EP Patent No. EP 1045133B 1 hereinafter called PTL2.
  • the cover is mounted directly on the upper surface of the holder without any additional mounting elements.
  • an embodiment of the present invention provides an engagement structure of a fuel pump cover for a vehicle comprising: a fuel pump; an upper case that is positioned to cover an upper portion of the fuel pump; the fuel pump cover that covers the upper case from its upper side; an arm extension that extends outward from the upper case; and an attaching portion that extends outward from the fuel pump cover and is configured to be inserted into a gap, the gap being formed between the arm extension and the upper case, wherein the arm extension includes an arm extension connecting member to engage with an attaching portion connecting member of the attaching portion, and wherein the attaching portion further includes a first opening portion that extends from the attaching portion connecting member beyond a height position of the gap.
  • the arm extension includes the arm extension connecting member to engage with the attaching portion connecting member of the attaching portion, if the fuel pump cover is released from the upper case, the attaching portion connecting member is merely necessitated to be released from the arm extension connecting member.
  • the arm extension extends outward from the upper case as well as the attaching portion extends outward from the fuel pump cover, the engagement structure is not interfere with the upper surface of the upper case. It is possible to improve the design flexibility of the upper surface of the upper case.
  • the attaching portion further includes the first opening portion that extends from the attaching portion connecting member beyond the height of the gap, it is possible to improve a visibility of the engagement structure through the first opening portion.
  • the engagement structure according to the embodiment of the present invention easily enables the engineer to performing the maintenance of a fuel pump without using any special tools, is constructed compact, and is not interfere with the upper surface of the upper case.
  • the first opening portion is formed to extend above an upper surface of the upper case.
  • the engagement between the arm extension connecting member of the arm extension and the attaching portion connecting member of the attaching portion can be viewed from above through the first opening portion. Therefore, the visibility in the maintenance is further improved.
  • the arm extension further includes a second opening portion that extends from the arm extension connecting member beyond a bottom of the gap.
  • the second opening portion provides a visible area to visibly recognize the engagement structure in the engagement state of the arm extension connecting member and the attaching portion connecting member when viewed from side and when viewed from below.
  • the arm extension connecting member and the attaching portion connecting member are engaged each other not to exceed an outer boundary of the arm extension.
  • the arm extension connecting member and the attaching portion connecting member are engaged inside the engagement structure inside the outer boundary of the arm extension. As such, there is no member projected outward. Therefore, it is possible that the whole of the engagement structure becomes more compact.
  • the arm extension further includes a releasing portion at a tip end of the arm extension, that is configured to function to release the arm extension connecting member from the attaching portion connecting member, and wherein the releasing portion is bent outward.
  • the arm extension connecting member is only released from the attaching portion connecting member by pushing out the releasing portion to outside. Therefore, it becomes much easier to release the engagement state of the engagement structure and to perform the maintenance of a fuel pump by a quick operation to release the fuel pump cover from the upper case.
  • FIG.l is a perspective view of an engagement structure 10 of a fuel pump cover for a vehicle according to an embodiment of the present invention
  • FIG.2 is an enlarged view of a fuel pump cover 40 of the structure 10;
  • FIG.3 is an enlarged view of an arm extension 60 of the structure 10;
  • FIG.4 is an explanation view of an engagement state between the fuel pump cover 40 and an upper case 30 when viewed from above;
  • FIG.5 is an explanation view of an engagement state between the fuel pump cover 40 and an upper case 30 when viewed from side;
  • FIG.6 is a cross sectional view taken along a line VI-VI in FIG.l .
  • an engagement structure 10 of a fuel pump cover 40 for a vehicle includes a fuel pump 20, an upper case 30, the fuel pump cover 40, an attaching portion 50 and an arm extension 60.
  • the fuel pump 20 is a device which is disposed inside the fuel tank (not shown) for pumping fuel.
  • the fuel pump 20 takes in fuel based on the amount of fuel which is required by the engine (not shown).
  • the upper case 30 is a case member formed cylindrically shaped in the vertical direction.
  • the upper case 30 is positioned to cover an upper portion of the fuel pump 20 and placed on the fuel tank in a state where the fuel pump 20 is inserted inside into the fuel tank.
  • the fuel pump 20 has a fuel injection system located between the fuel tank and the engine.
  • the fuel injection system usually includes an inlet (not shown), a filter head (not shown), an outlet (not shown) and other general components (not shown) assembled to be the fuel injection system.
  • the components of the fuel injection system are placed at the upper portion of the fuel pump 20 and covered by the upper case 30.
  • the upper case 30 includes an upper surface 34 that opens so that the components of the fuel injection system pass through an opening of the upper surface 34.
  • the fuel pump 20 is usually disposed inside the fuel tank and faced under the vehicle floor.
  • the fuel pump cover 40 that is a cover member covers the components of the fuel injection system and the upper case 30 from above.
  • an attaching portion 50 is formed to extend outward from the fuel pump cover 40 in the horizontal direction along the upper surface 34 and bend the attaching portion 50 downward in an outer peripheral part of an upper surface 34.
  • the attaching portion 50 is formed in a nearly L-shape in cross section.
  • the attaching portion 50 and the fuel pump cover 40 are integrally formed.
  • the fuel pump cover 40 and the attaching portion 50 are colored by light gray in FIG.l, FIG.2, and FIG.4 to FIG.6.
  • the attaching portion 50 includes a first opening portion 52 which is formed with the center section of the bent portion of the attaching portion 50 as a center.
  • the shape of the first opening portion 52 is a nearly rectangular when viewed from above and when viewed from side.
  • the first opening portion 52 at the bottom end thereof includes an attaching portion connecting member 54 which engages with an arm extension connecting member 62 (described later) of the arm extension 60.
  • an arm extension 60 is formed to extend outward from the upper case 30 in the horizontal direction by a predetermined length and bend the arm extension 60 upward. Moreover, the arm extension 60 is formed in an L- shape in cross section and extends outward from the upper case 30. Since the attaching portion 50 is formed to extend outward from the fuel pump cover 40, the engagement structure that the arm extension connecting member 62 engages with the attaching portion connecting member 54 does not interfere with the upper surface 34 of the upper case 30. This enables to improve the design flexibility of the upper surface 34 of the upper case 30. Therefore, the engagement structure 10 easily enables the engineer to performing the maintenance of the fuel pump 20 without using any special tools, is constructed compactly, and does not interfere with the upper surface 34 of the upper case 30.
  • the arm extension 60 includes the arm extension connecting member 62 which is formed like a projection projecting toward the upper case 30.
  • a gap 70 is formed between the arm extension 60 and the upper case 30 (See FIG.3 and FIG.6).
  • the height of the gap 70 is indicated by “H” (See FIG.6), where the arm extension connecting member 62 is further formed toward the gap 70.
  • the engagement state of the attaching portion connecting member 54 of the attaching portion 50 and the arm extension connecting member 62 of the arm extension 60 is arranged in the area within the height H of the gap 70.
  • the first opening portion 52 extends from the attaching portion connecting member 54 beyond the height H of the gap 70. As such, since it is possible to improve a visibility of the engagement through the first opening portion 52, the maintenance is facilitated.
  • the first opening portion 52 which extends beyond the height H of the gap 70, further is formed to extend to the distal end placed above the upper surface 34 of the upper case 30.
  • the engagement between the arm extension connecting member 62 of the arm extension 60 and the attaching portion connecting member 54 of the attaching portion 50 can be viewed from above through the first opening portion. Therefore, the visibility in the maintenance is furthermore improved.
  • the arm extension 60 includes a second opening portion 64 that extends from the arm extension connecting member 62 beyond a bottom of the gap 70. Since the second opening portion 64 is formed to extend beyond the bottom of the gap 70, the area inside the gap 70 can be seen from the outside through the second opening portion 64. Therefore, since the visibility of the engagement structure when viewed from side and when viewed from below is improved, it becomes easier to perform the maintenance of a fuel pump 20.
  • the outer boundary of the arm extension 60 excluding a releasing portion 66 described below is indicated by “X”.
  • the arm extension connecting member 62 and the attaching portion connecting member 54 are engaged each other not to exceed an outer boundary X of the arm extension 60.
  • the arm extension connecting member 62 and the attaching portion connecting member 54 are engaged inside the engagement structure 10 that is not exceeded the outer boundary X of the arm extesion. As such, there is no member outside the arm extension 60. Therefore, it is possible that the whole of the engagement structure 10 becomes more compact.
  • the arm extension 60 includes a releasing portion 66 at a tip end of the arm extension 60.
  • the releasing portion 66 is formed to be bent outward. When the releasing portion 66 is operated, the engagement state between the attaching portion 50 and arm extension 60 is released.
  • the releasing portion 66 is configured to function to release the arm extension connecting member 62 from the attaching portion connecting member 54.
  • the arm extension connecting member 62 is only released from the attaching portion connecting member 54 by pushing out the releasing portion 66 to outside.
  • reinforcing members 68, 68 are provided with an outer surface 69 of the arm extension 60 (See FIG.l and FIG.5).
  • the number of combinations of the attaching portion 50 and the arm extension 60 is not especially limited.
  • the fuel pump cover 40 is placed at a predetermined position of the upper surface 34 of the upper case 30.
  • the fuel pump cover 40 that is prepared to cover the components of the fuel injection system, is easily placed at a predetermined position of the upper surface 34 of the upper case 30.
  • the attaching portion 50 is inserted into the gap 70 between the arm extension 60 and the upper case 30.
  • the attaching portion connecting member 54 moves downward. As such, the attaching portion connecting member 54 is pushed under the arm extension connecting member 62. By the energizing force of the arm extension 60, the arm extension connecting member 62 returns to the original position and engages with the attaching portion connecting member 54.
  • the arm extension connecting member 62 is only released from the attaching portion connecting member 54.
  • the releasing portion 66 is pushed outward. As such, since the attaching portion connecting member 54 is disengaged from the arm extension connecting member 62, the fuel pump cover 40 can be moved upward.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The present invention discloses an engagement structure 10 of a fuel pump cover 40 for a vehicle comprising: a fuel pump 20; an upper case 30 that covers the fuel pump; the fuel pump cover 40 that covers the upper case 30; an arm extension 60 that extends outward from the upper case 30; and an attaching portion 50 that extends outward from the fuel pump cover 40. The arm extension 60 includes an arm extension connecting member 62 to engage with an attaching portion connecting member 54 of the attaching portion 50. The attaching portion 50 further includes a first opening portion 52 that extends from the attaching portion connecting member 54 beyond a height H of the gap 70.

Description

TITLE OF THE INVENTION
AN ENGAGEMENT STRUCTURE OF A FUEL PUMP COVER FOR A VEHICLE
FIELD OF INVENTION
The present invention relates to an engagement structure of a fuel pump cover for a vehicle.
BACKGROUND OF THE INVENTION
It is known that a fuel pump apparatus has a fuel pump, a filter case that is positioned above the fuel pump to cover parts such as a pressure regulator, and a stopper that is positioned above the filter case to cover the upper portion of the filter case, as disclosed in US Publication of Unexamined Patent Application No. US2009/0000601A1 hereinafter called PTL1.
For the purpose of protecting the upper portion of the fuel pump, the stopper is mounted to a stay of the filter case by a screw so that the filter case is prevented from being pulled out upwardly.
However, if the fuel pump has to be maintained from the upper side of the fuel pump, the maintenance work becomes difficult since the stopper is mounted to the filter case by the screw. Moreover, there are cases where it is necessary to use a special tool to remove the screw in order to perform the maintenance of the fuel pump.
Moreover, it is known that a fuel pump apparatus has a fuel pump, a holder that covers a fuel pump and is formed with hole portions in its upper surface, and a cover which has attaching portions which are inserted into the hole portions respectively and is directly mounted on the upper surface of the holder, as disclosed in EP Patent No. EP 1045133B 1 hereinafter called PTL2.
In the fuel pump apparatus disclosed in PTL2, for the purpose of more easily mounting the cover on the holder, the cover is mounted directly on the upper surface of the holder without any additional mounting elements. As such, in comparison to PTL1, it is possible to mount the cover on the upper surface of the holder more easily than to mount the stopper to the side of the filter case disclosed in PTL1.
However, since the other parts are normally located on the upper surface of the holder, the space where the attaching portions are mounted to the upper surface of the holder is limited.
Therefore, the development of an engagement structure of a fuel pump cover for a vehicle, that easily enables the engineer to performing the maintenance of a fuel pump without using any special tools, is constructed compact, and is not interfere with the upper surface of the upper case, is required. CITATION LIST
Patent Literature
PTL1 : US Publication of Unexamined Patent Application No. US2009/0000601 Al PTL2: EP Patent No. EP1045133B1
SUMMARY OF THE INVENTION
It is an objective of the present inventions to provide an engagement structure of a fuel pump cover for a vehicle, that easily enables the engineer to performing the maintenance of a fuel pump without using any special tools, is constructed compact, and is not interfere with the upper surface of the upper case.
In order to achieve the above objective, an embodiment of the present invention provides an engagement structure of a fuel pump cover for a vehicle comprising: a fuel pump; an upper case that is positioned to cover an upper portion of the fuel pump; the fuel pump cover that covers the upper case from its upper side; an arm extension that extends outward from the upper case; and an attaching portion that extends outward from the fuel pump cover and is configured to be inserted into a gap, the gap being formed between the arm extension and the upper case, wherein the arm extension includes an arm extension connecting member to engage with an attaching portion connecting member of the attaching portion, and wherein the attaching portion further includes a first opening portion that extends from the attaching portion connecting member beyond a height position of the gap.
According to the embodiment of the present invention, firstly, since the arm extension includes the arm extension connecting member to engage with the attaching portion connecting member of the attaching portion, if the fuel pump cover is released from the upper case, the attaching portion connecting member is merely necessitated to be released from the arm extension connecting member.
As such, it is easily to perform the maintenance of the fuel pump without using any special tools for a screw or a bolt to release the fuel pump cover from the upper case. Moreover, since the screw, etc. is not required, the engagement structure becomes compact in the width direction.
Secondly, since the arm extension extends outward from the upper case as well as the attaching portion extends outward from the fuel pump cover, the engagement structure is not interfere with the upper surface of the upper case. It is possible to improve the design flexibility of the upper surface of the upper case. Thirdly, since the attaching portion further includes the first opening portion that extends from the attaching portion connecting member beyond the height of the gap, it is possible to improve a visibility of the engagement structure through the first opening portion.
Therefore, the engagement structure according to the embodiment of the present invention, easily enables the engineer to performing the maintenance of a fuel pump without using any special tools, is constructed compact, and is not interfere with the upper surface of the upper case.
In the engagement structure of the embodiment of the present invention, the first opening portion is formed to extend above an upper surface of the upper case.
According to the embodiment of the present invention, the engagement between the arm extension connecting member of the arm extension and the attaching portion connecting member of the attaching portion can be viewed from above through the first opening portion. Therefore, the visibility in the maintenance is further improved.
In the engagement structure of the embodiment of the present invention, the arm extension further includes a second opening portion that extends from the arm extension connecting member beyond a bottom of the gap.
According to the embodiment of the present invention, the second opening portion provides a visible area to visibly recognize the engagement structure in the engagement state of the arm extension connecting member and the attaching portion connecting member when viewed from side and when viewed from below.
Therefore, since the visibility of the engagement structure when viewed from side and when viewed from below is improved, it becomes easier to perform the maintenance of a fuel pump.
In the engagement structure of the embodiment of the present invention, the arm extension connecting member and the attaching portion connecting member are engaged each other not to exceed an outer boundary of the arm extension.
According to the embodiment of the present invention, the arm extension connecting member and the attaching portion connecting member are engaged inside the engagement structure inside the outer boundary of the arm extension. As such, there is no member projected outward. Therefore, it is possible that the whole of the engagement structure becomes more compact.
In the engagement structure of the embodiment of the present invention, the arm extension further includes a releasing portion at a tip end of the arm extension, that is configured to function to release the arm extension connecting member from the attaching portion connecting member, and wherein the releasing portion is bent outward.
According to the embodiment of the present invention, if the engagement state of the engagement structure is released, the arm extension connecting member is only released from the attaching portion connecting member by pushing out the releasing portion to outside. Therefore, it becomes much easier to release the engagement state of the engagement structure and to perform the maintenance of a fuel pump by a quick operation to release the fuel pump cover from the upper case.
BRIEF DESCRIPTION OF DRAWINGS
The principle of the present invention and its advantages will become apparent in the following description taking in consideration with the accompanying drawings in which: FIG.l is a perspective view of an engagement structure 10 of a fuel pump cover for a vehicle according to an embodiment of the present invention;
FIG.2 is an enlarged view of a fuel pump cover 40 of the structure 10;
FIG.3 is an enlarged view of an arm extension 60 of the structure 10;
FIG.4 is an explanation view of an engagement state between the fuel pump cover 40 and an upper case 30 when viewed from above;
FIG.5 is an explanation view of an engagement state between the fuel pump cover 40 and an upper case 30 when viewed from side; and
FIG.6 is a cross sectional view taken along a line VI-VI in FIG.l .
DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG.l to FIG.6.
As shown in FIG. 1, an engagement structure 10 of a fuel pump cover 40 for a vehicle includes a fuel pump 20, an upper case 30, the fuel pump cover 40, an attaching portion 50 and an arm extension 60.
The fuel pump 20 is a device which is disposed inside the fuel tank (not shown) for pumping fuel. In particular, the fuel pump 20 takes in fuel based on the amount of fuel which is required by the engine (not shown).
The upper case 30 is a case member formed cylindrically shaped in the vertical direction. The upper case 30 is positioned to cover an upper portion of the fuel pump 20 and placed on the fuel tank in a state where the fuel pump 20 is inserted inside into the fuel tank. In general, the fuel pump 20 has a fuel injection system located between the fuel tank and the engine. The fuel injection system usually includes an inlet (not shown), a filter head (not shown), an outlet (not shown) and other general components (not shown) assembled to be the fuel injection system. The components of the fuel injection system are placed at the upper portion of the fuel pump 20 and covered by the upper case 30. Moreover, the upper case 30 includes an upper surface 34 that opens so that the components of the fuel injection system pass through an opening of the upper surface 34.
The fuel pump 20 is usually disposed inside the fuel tank and faced under the vehicle floor. In order to prevent a direct touch or a contact between the components of the fuel injection system and the vehicle floor, the fuel pump cover 40 that is a cover member covers the components of the fuel injection system and the upper case 30 from above.
As shown in FIG.1 and FIG.2, an attaching portion 50 is formed to extend outward from the fuel pump cover 40 in the horizontal direction along the upper surface 34 and bend the attaching portion 50 downward in an outer peripheral part of an upper surface 34. As such, the attaching portion 50 is formed in a nearly L-shape in cross section.
In the embodiment, the attaching portion 50 and the fuel pump cover 40 are integrally formed. For the purpose of distinguishing between the fuel pump cover 40 / attaching portion 50 and other elements, the fuel pump cover 40 and the attaching portion 50 are colored by light gray in FIG.l, FIG.2, and FIG.4 to FIG.6.
Moreover, the attaching portion 50 includes a first opening portion 52 which is formed with the center section of the bent portion of the attaching portion 50 as a center. The shape of the first opening portion 52 is a nearly rectangular when viewed from above and when viewed from side.
Furthermore, the first opening portion 52 at the bottom end thereof includes an attaching portion connecting member 54 which engages with an arm extension connecting member 62 (described later) of the arm extension 60.
As shown in FIG. 1 and FIG. 3, an arm extension 60 is formed to extend outward from the upper case 30 in the horizontal direction by a predetermined length and bend the arm extension 60 upward. Moreover, the arm extension 60 is formed in an L- shape in cross section and extends outward from the upper case 30. Since the attaching portion 50 is formed to extend outward from the fuel pump cover 40, the engagement structure that the arm extension connecting member 62 engages with the attaching portion connecting member 54 does not interfere with the upper surface 34 of the upper case 30. This enables to improve the design flexibility of the upper surface 34 of the upper case 30. Therefore, the engagement structure 10 easily enables the engineer to performing the maintenance of the fuel pump 20 without using any special tools, is constructed compactly, and does not interfere with the upper surface 34 of the upper case 30.
The arm extension 60 includes the arm extension connecting member 62 which is formed like a projection projecting toward the upper case 30. A gap 70 is formed between the arm extension 60 and the upper case 30 (See FIG.3 and FIG.6). The height of the gap 70 is indicated by “H” (See FIG.6), where the arm extension connecting member 62 is further formed toward the gap 70. The engagement state of the attaching portion connecting member 54 of the attaching portion 50 and the arm extension connecting member 62 of the arm extension 60, is arranged in the area within the height H of the gap 70.
In the relation between the first opening portion 52, the attaching portion connecting member 54 and the arm extension connecting member 62, the first opening portion 52 extends from the attaching portion connecting member 54 beyond the height H of the gap 70. As such, since it is possible to improve a visibility of the engagement through the first opening portion 52, the maintenance is facilitated.
In particular, the first opening portion 52 which extends beyond the height H of the gap 70, further is formed to extend to the distal end placed above the upper surface 34 of the upper case 30. As such, the engagement between the arm extension connecting member 62 of the arm extension 60 and the attaching portion connecting member 54 of the attaching portion 50 can be viewed from above through the first opening portion. Therefore, the visibility in the maintenance is furthermore improved.
Also, the arm extension 60 includes a second opening portion 64 that extends from the arm extension connecting member 62 beyond a bottom of the gap 70. Since the second opening portion 64 is formed to extend beyond the bottom of the gap 70, the area inside the gap 70 can be seen from the outside through the second opening portion 64. Therefore, since the visibility of the engagement structure when viewed from side and when viewed from below is improved, it becomes easier to perform the maintenance of a fuel pump 20.
As shown in FIG.6, the outer boundary of the arm extension 60 excluding a releasing portion 66 described below is indicated by “X”. The arm extension connecting member 62 and the attaching portion connecting member 54 are engaged each other not to exceed an outer boundary X of the arm extension 60.
Namely, the arm extension connecting member 62 and the attaching portion connecting member 54 are engaged inside the engagement structure 10 that is not exceeded the outer boundary X of the arm extesion. As such, there is no member outside the arm extension 60. Therefore, it is possible that the whole of the engagement structure 10 becomes more compact.
Furthermore, the arm extension 60 includes a releasing portion 66 at a tip end of the arm extension 60. The releasing portion 66 is formed to be bent outward. When the releasing portion 66 is operated, the engagement state between the attaching portion 50 and arm extension 60 is released. The releasing portion 66 is configured to function to release the arm extension connecting member 62 from the attaching portion connecting member 54.
As such, when the releasing portion 66 is pushed outward from the upper case 30, the arm extension connecting member 62 is only released from the attaching portion connecting member 54 by pushing out the releasing portion 66 to outside.
Therefore, it becomes much easier to release the engagement state of the engagement structure and to perform the maintenance of a fuel pump 20 by a quick operation to release the fuel pump cover 40 from the upper case 30 without using any special tools for a screw or a bolt to release the fuel pump cover 40 from the upper case 30. Moreover, since the screw, etc. is not required, the engagement structure 10 becomes compact in the width direction of the engagement structure 10.
For the purpose of reinforcing the arm extension 60, reinforcing members 68, 68 are provided with an outer surface 69 of the arm extension 60 (See FIG.l and FIG.5).
The number of combinations of the attaching portion 50 and the arm extension 60 is not especially limited.
Next, the operation of the structure 10 of the fuel pump cover 40 for a vehicle when assembled will be provided with reference to FIG.4 to FIG.6.
Firstly, the fuel pump cover 40 is placed at a predetermined position of the upper surface 34 of the upper case 30. The fuel pump cover 40 that is prepared to cover the components of the fuel injection system, is easily placed at a predetermined position of the upper surface 34 of the upper case 30. At the same time, the attaching portion 50 is inserted into the gap 70 between the arm extension 60 and the upper case 30.
Secondly, in a state where the attaching portion 50 is inserted into the gap 70, a force is applied to the fuel pump cover 40 from above. Then, the attaching portion connecting member 54 moves downward, pushes out the arm extension connecting member 62 to outside.
Thirdly, furthermore, the attaching portion connecting member 54 moves downward. As such, the attaching portion connecting member 54 is pushed under the arm extension connecting member 62. By the energizing force of the arm extension 60, the arm extension connecting member 62 returns to the original position and engages with the attaching portion connecting member 54.
On the other hand, the operation of the structure 10 of the fuel pump cover 40 for a vehicle when releasing the fuel pump cover 40 from the upper case 30 will be provided.
If the engagement state of the engagement structure 10 is released, the arm extension connecting member 62 is only released from the attaching portion connecting member 54.
Firstly, in the engagement state, the releasing portion 66 is pushed outward. As such, since the attaching portion connecting member 54 is disengaged from the arm extension connecting member 62, the fuel pump cover 40 can be moved upward.
Secondly, furthermore the fuel pump cover 40 is moved upward. Therefore, the fuel pump cover 40 is disengaged from the arm extension 60.
Although specific embodiments of the invention have been disclosed and described as well as illustrated in the companying drawings, it is simply for the purpose of better understanding of the principle of the present invention and it is not as a limitation of the scope and spirit of the teaching of the present invention. Adaption and modification to various structures such as design or material of the invention, mounting mechanism of various parts and elements or embodiments are possible and apparent to a skilled person without departing from the scope of the present invention which is to be determined by the claims.
List of reference:
10 engagement structure of a fuel pump cover
20 fuel pump
30 upper case
34 upper surface
40 fuel pump cover
50 attaching portion
52 first opening portion
54 attaching portion connecting member
60 arm extension
62 arm extension connecting member
64 second opening portion
66 releasing portion
68 reinforcing member
69 outer surface 70 gap
X outer boundary
H height of the gap

Claims

1. An engagement structure (10) of a fuel pump cover (40) for a vehicle comprising: a fuel pump (20); an upper case (30) that is positioned to cover an upper portion of said fuel pump (20); said fuel pump cover (40) that covers said upper case (30) from its upper side; an arm extension (60) that extends outward from said upper case (30); and an attaching portion (50) that extends outward from said fuel pump cover (40) and is configured to be inserted into a gap (70), said gap (70) being formed between said arm extension (60) and said upper case (30), wherein said arm extension (60) includes an arm extension connecting member (62) to engage with an attaching portion connecting member (54) of said attaching portion (50), and wherein said attaching portion (50) further includes a first opening portion (52) that extends from said attaching portion connecting member (54) beyond a height (H) of said gap (70).
2. The engagement structure (10) of said fuel pump cover (40) of claim 1, wherein said first opening portion (52) is formed to extend above an upper surface (34) of said upper case (30).
3. The engagement structure (10) of said fuel pump cover (40) of claim 1, wherein said arm extension (60) further includes a second opening portion (64) that extends from said arm extension connecting member (62) beyond a bottom of said gap (70).
4. The engagement structure (10) of said fuel pump cover (40) of claim 1, wherein said arm extension connecting member (62) and said attaching portion connecting member (54) are engaged each other not to exceed an outer boundary of said arm extension (60).
5. The engagement structure (10) of said fuel pump cover (40) of claim 1, wherein said arm extension (60) further includes a releasing portion (66) at a tip end of said arm extension (60), that is configured to function to release said arm extension connecting member (62) from said attaching portion connecting member (54), and wherein said releasing portion (66) is bent outward.
PCT/TH2020/000063 2020-09-02 2020-09-02 An engagement structure of a fuel pump cover for a vehicle WO2022050906A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112023003402A BR112023003402A2 (en) 2020-09-02 2020-09-02 FUEL PUMP COVER COUPLING STRUCTURE FOR VEHICLE
PCT/TH2020/000063 WO2022050906A1 (en) 2020-09-02 2020-09-02 An engagement structure of a fuel pump cover for a vehicle

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PCT/TH2020/000063 WO2022050906A1 (en) 2020-09-02 2020-09-02 An engagement structure of a fuel pump cover for a vehicle

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004190661A (en) * 2002-11-28 2004-07-08 Denso Corp Fuel feed apparatus
CN2632329Y (en) * 2003-06-06 2004-08-11 爱三工业株式会社 Storage container unit
US20050217735A1 (en) * 2001-12-21 2005-10-06 Inergy Automotive Systems Research Motor vehicle fuel tank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050217735A1 (en) * 2001-12-21 2005-10-06 Inergy Automotive Systems Research Motor vehicle fuel tank
JP2004190661A (en) * 2002-11-28 2004-07-08 Denso Corp Fuel feed apparatus
CN2632329Y (en) * 2003-06-06 2004-08-11 爱三工业株式会社 Storage container unit

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