US20060083631A1 - Fuel pump assembly - Google Patents
Fuel pump assembly Download PDFInfo
- Publication number
- US20060083631A1 US20060083631A1 US10/964,140 US96414004A US2006083631A1 US 20060083631 A1 US20060083631 A1 US 20060083631A1 US 96414004 A US96414004 A US 96414004A US 2006083631 A1 US2006083631 A1 US 2006083631A1
- Authority
- US
- United States
- Prior art keywords
- pump
- motor
- clamp device
- set forth
- spring clamp
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/20—Fluid liquid, i.e. incompressible
- F04C2210/203—Fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
Definitions
- the present invention relates generally to a fuel pump assembly and more particularly to a spring clamp device for securing a motor to a pump of the assembly.
- Prior art automotive fuel pump assemblies typically have an electric motor with a stator and an armature with a drive shaft connected to a fuel pump between inlet and outlet end caps which are all received inside of a metallic sleeve extending axially along the entire length of the assembly.
- the ends of the sleeve are rolled over and project radially inward of the end caps to generally align and hold the assembly together and prevent de-coupling of the pump from the motor.
- the various components of the pump and motor and the end caps are all assembled inside the sleeve and then both of its ends are rolled over the end caps thus securing all of the components of the pump and motor together in axial alignment.
- a fuel pump assembly has a pump coupled to an electric motor by a spring clamp device preferably having a plurality of arms spaced circumferentially around the pump and motor and extending generally axially and parallel to an axis of rotation of the motor, from a common first member and to a plurality of second members.
- the first member spans radially and is preferably received by the motor, and the plurality of second members preferably project radially inward from the respective arms to contact an outboard face of the pump.
- the second members are preferably disengageable clips which exert a controlled force upon the pump, thus exhibiting a consistent and controlled stress across the pump encasement to eliminate any potential distortion of the preferably plastic encasement.
- Objects, feature, and advantages of this invention include a fuel pump assembly which can be dis-assembled without destroying any of the assembly components, the motor and pump can be separately manufactured and pre-assembled, and the pump encasement can be made of relatively inexpensive plastic without concern of distortion. Operation reliability and performance is improved, and the assembly is rugged, durable, maintenance free, of relatively simple design, inexpensive to manufacture and assemble, and in service has a long useful life.
- FIG. 1 is a side view of a fuel pump assembly of the present invention
- FIG. 2 is a bottom end view of the fuel pump assembly
- FIG. 3 is a segmented cross section of a fuel pump and spring clamp device of the fuel pump assembly taken along line 3 - 3 of FIG. 2 ;
- FIG. 4 is a cross section of the fuel pump assembly illustrating two fasteners and taken along line 4 - 4 of FIG. 2 ;
- FIG. 5 is a top view of the spring clamp assembly
- FIG. 6 is a side view of the spring clamp assembly
- FIG. 7 is an enlarged fragmentary side view of the spring clamp assembly of FIG. 6 ;
- FIG. 8 is a side view of a second embodiment of a fuel pump assembly
- FIG. 9 is a side view of a second embodiment of the spring clamp device utilized in FIG. 8 ;
- FIG. 10 is a segmented cross section of a third embodiment of a fuel pump assembly.
- FIGS. 1-4 illustrate an electric fuel pump assembly 20 embodying the present invention and having an electric motor 22 coupled to a fuel pump 24 secured by a spring clamp device 26 to the motor.
- the motor 22 is generally elongate axially and has a stator encircling an armature with a drive shaft 34 journaled for rotation by bearings carried by end caps 28 and 30 received in a housing shell 32 .
- the drive shaft 34 projects axially outward from the inboard end cap or surface 30 along an axis of rotation 36 for mechanical coupling to the fuel pump 24 .
- the motor 22 and the pump 24 are preferably pre-assembled, “off-the-shelf,” items which are releasably mounted together in coaxial alignment by the snap fitting spring clamp device 26 .
- the fuel pump 24 has an encasement or housing 38 with a base 48 and a cover or end cap 52 preferably made of non-corrosive and economical plastic which defines a cavity 40 receiving a gear-rotor assembly 42 of a positive displacement pump.
- the base 48 has an inboard face 44 which faces the inboard end cap or surface 30 of the motor 22 and a through bore 50 for receipt of the motor shaft 34 .
- the pump end cap or cover 52 is attached and sealed to the base 48 during assembly and after the gear-rotor assembly 42 is installed therein.
- the end cap 52 has an outboard end face 46 and an axially projecting fuel outlet 54 and a fuel inlet 56 .
- Inlet 56 communicates with the fuel inlet of the gear-rotor assembly 42 and outlet 54 communicates with the cavity or outlet 40 of the gear-rotor assembly through which it discharges fuel at a high pressure when operating.
- a turbine pump assembly or other type of fuel pump assembly may be utilized in lieu of the gear-rotor pump assembly 42 .
- the spring clamp device 26 releasably mounts and attaches together the motor 22 and pump 24 of the fuel pump assembly 20 .
- the clamp device 26 preferably attaches to the inboard end cap or surface 30 of the motor 22 by two fasteners or screws 60 and extends radially outward and axially along the pump housing 38 to partially envelope or “cage,” and resiliently engage the pump 24 .
- An annular member or base plate 62 of the spring clamp device 26 has two diametrically opposed holes 64 to receive the screws 60 which thread into the end cap 30 of the motor 22 and hold the base plate 62 directly against the end cap 30 in a substantially perpendicular orientation to the axis of rotation 36 .
- each arm 68 project substantially axially downward from a peripheral edge 66 of the base plate 62 and are preferably integral and unitary with the base plate.
- the arms 68 are preferably substantially equally spaced circumferentially from one another and are preferably slightly bowed outward when not flexed for engagement to the pump 24 .
- Located at the distal end 70 of each arm 68 is a finger or clip 72 , which projects generally radially inward, and resiliently snaps over the outboard face 46 of the pump encasement 38 as the arms 68 resiliently flex from a radially outward unstressed state and in a generally radially inward direction toward a radial unstressed state and axial stressed state.
- Each clip 72 has a contact portion 74 which projects radially inward from its associated flex arm 68 and preferably angles axially inward at an angle 78 preferably about five degrees when in a disengaged state (as best shown in FIGS. 6 and 7 ) and with respect to an imaginary plane 76 disposed perpendicular to the axis of rotation 36 . From the contact portion 74 , the clip 72 has a rounded cam-like return bend 80 which extends to a generally axially outward projecting distal tab 82 of the clip 72 .
- the spring clamp device 26 is preferably made from a single stamping of sheet metal or spring steel.
- a downward projecting cylindrical shoulder 84 of the motor housing 32 disposed concentrically about the shaft 34 , is received in the base plate 62 of the spring clamp device 26 through a central hole 86 (as best shown in FIG. 5 ).
- the screws 60 are then threaded into the motor end cap 30 which rigidly holds the base plate 62 to the motor 22 with the flex arms 68 projecting generally axially away from the motor 22 (as best shown in FIGS. 3 and 4 ).
- the clips 72 of the flex arms 68 are then resiliently moved radially outward so that the clips 72 radially clear the pump housing 38 when the pump 24 is moved between them, and axially toward and coupled with the motor 22 .
- the cam-like bends 80 of the clips 72 are preferably in biased contact with a slightly rounded peripheral edge 81 of the pump encasement 38 but not yet in direct contact with the outboard face 46 .
- An external force applied in a radially inward direction against the mid-section of each bowed flex arm 68 causes the flex arms to generally straighten and the contact portions 74 of the clips 72 to align parallel with the imaginary plane 76 (as best shown in FIG. 7 ).
- the cam-like bend 80 then assists each clip 72 to snap over the edge 81 and slide over the outboard face 46 in a radially inward direction.
- the resilience or spring force of the bowed flex arms 68 and clips 72 exert an evenly distributed and consistent force upon the plastic pump encasement 38 in an axially inward direction. If removing the pump 24 from the motor 22 is desired, a radially outward force is placed upon the clip tabs 82 which flexes the arms 68 radially outward to radially clear the clips 72 from the cylindrical pump housing 38 . Once cleared, the pump 24 can then be moved axially away and de-coupled and removed from the motor 22 .
- FIGS. 8 and 9 illustrate a modified spring clamp device 26 ′ wherein the flex arms 68 ′ extend the entire axial length of the pump 24 ′ and motor 22 ′ and the base plate 62 ′ is in biased contact with the outboard end cap 28 ′ of the motor housing 32 ′.
- the end cap 28 ′ has a cylindrical shoulder 88 over which the base plate 62 ′ is received.
Abstract
A fuel pump assembly has a pump mounted to an electric motor by a spring clamp device preferably having a plurality of arms spaced circumferentially around the pump and extending axially generally parallel to an axis of rotation of the motor, from a common base member. The base member is preferably received by the motor, and each arm preferably has a clip which projects radially inward to contact an outboard end face of the pump. The clips are preferably disengageable from the pump and exert a controlled force on the pump, thus producing a consistent and controlled clamping force across the housing encasement to eliminate any potential distortion of the preferably plastic housing.
Description
- The present invention relates generally to a fuel pump assembly and more particularly to a spring clamp device for securing a motor to a pump of the assembly.
- Prior art automotive fuel pump assemblies typically have an electric motor with a stator and an armature with a drive shaft connected to a fuel pump between inlet and outlet end caps which are all received inside of a metallic sleeve extending axially along the entire length of the assembly. The ends of the sleeve are rolled over and project radially inward of the end caps to generally align and hold the assembly together and prevent de-coupling of the pump from the motor. During manufacturing, the various components of the pump and motor and the end caps are all assembled inside the sleeve and then both of its ends are rolled over the end caps thus securing all of the components of the pump and motor together in axial alignment.
- Unfortunately, this process requires the entire assembly be purchased from a single manufacturer who assembles and/or produces both pump and motor components. Furthermore, rolling the ends of the sleeve places a compressive force on the internal components which is not easily controlled or consistently repeated. Excessive stress placed upon the plastic components of the pump can degrade pump performance. Yet further, the sleeve-type of pump and motor assembly is expensive to manufacture and can not be repaired without destroying the sleeve.
- A fuel pump assembly has a pump coupled to an electric motor by a spring clamp device preferably having a plurality of arms spaced circumferentially around the pump and motor and extending generally axially and parallel to an axis of rotation of the motor, from a common first member and to a plurality of second members. The first member spans radially and is preferably received by the motor, and the plurality of second members preferably project radially inward from the respective arms to contact an outboard face of the pump. The second members are preferably disengageable clips which exert a controlled force upon the pump, thus exhibiting a consistent and controlled stress across the pump encasement to eliminate any potential distortion of the preferably plastic encasement.
- Objects, feature, and advantages of this invention include a fuel pump assembly which can be dis-assembled without destroying any of the assembly components, the motor and pump can be separately manufactured and pre-assembled, and the pump encasement can be made of relatively inexpensive plastic without concern of distortion. Operation reliability and performance is improved, and the assembly is rugged, durable, maintenance free, of relatively simple design, inexpensive to manufacture and assemble, and in service has a long useful life.
- These and other objects, features and advantages of this invention will be apparent from the following detailed description of the presently preferred embodiments and best mode, appended claims, and accompanying drawings in which:
-
FIG. 1 is a side view of a fuel pump assembly of the present invention; -
FIG. 2 is a bottom end view of the fuel pump assembly; -
FIG. 3 is a segmented cross section of a fuel pump and spring clamp device of the fuel pump assembly taken along line 3-3 ofFIG. 2 ; -
FIG. 4 is a cross section of the fuel pump assembly illustrating two fasteners and taken along line 4-4 ofFIG. 2 ; -
FIG. 5 is a top view of the spring clamp assembly; -
FIG. 6 is a side view of the spring clamp assembly; -
FIG. 7 is an enlarged fragmentary side view of the spring clamp assembly ofFIG. 6 ; -
FIG. 8 is a side view of a second embodiment of a fuel pump assembly; -
FIG. 9 is a side view of a second embodiment of the spring clamp device utilized inFIG. 8 ; and -
FIG. 10 is a segmented cross section of a third embodiment of a fuel pump assembly. - Referring in more detail to the drawings,
FIGS. 1-4 illustrate an electricfuel pump assembly 20 embodying the present invention and having anelectric motor 22 coupled to afuel pump 24 secured by aspring clamp device 26 to the motor. Themotor 22 is generally elongate axially and has a stator encircling an armature with adrive shaft 34 journaled for rotation by bearings carried byend caps housing shell 32. Thedrive shaft 34 projects axially outward from the inboard end cap orsurface 30 along an axis ofrotation 36 for mechanical coupling to thefuel pump 24. Themotor 22 and thepump 24 are preferably pre-assembled, “off-the-shelf,” items which are releasably mounted together in coaxial alignment by the snap fittingspring clamp device 26. - Referring to
FIGS. 3 and 4 , thefuel pump 24 has an encasement orhousing 38 with abase 48 and a cover orend cap 52 preferably made of non-corrosive and economical plastic which defines acavity 40 receiving a gear-rotor assembly 42 of a positive displacement pump. Thebase 48 has aninboard face 44 which faces the inboard end cap orsurface 30 of themotor 22 and athrough bore 50 for receipt of themotor shaft 34. The pump end cap orcover 52 is attached and sealed to thebase 48 during assembly and after the gear-rotor assembly 42 is installed therein. Theend cap 52 has anoutboard end face 46 and an axially projectingfuel outlet 54 and afuel inlet 56.Inlet 56 communicates with the fuel inlet of the gear-rotor assembly 42 andoutlet 54 communicates with the cavity oroutlet 40 of the gear-rotor assembly through which it discharges fuel at a high pressure when operating. If desired, a turbine pump assembly or other type of fuel pump assembly may be utilized in lieu of the gear-rotor pump assembly 42. - Referring to
FIGS. 5-7 , thespring clamp device 26 releasably mounts and attaches together themotor 22 andpump 24 of thefuel pump assembly 20. Theclamp device 26 preferably attaches to the inboard end cap orsurface 30 of themotor 22 by two fasteners orscrews 60 and extends radially outward and axially along thepump housing 38 to partially envelope or “cage,” and resiliently engage thepump 24. An annular member orbase plate 62 of thespring clamp device 26 has two diametrically opposedholes 64 to receive thescrews 60 which thread into theend cap 30 of themotor 22 and hold thebase plate 62 directly against theend cap 30 in a substantially perpendicular orientation to the axis ofrotation 36. Fourresilient flex arms 68 project substantially axially downward from aperipheral edge 66 of thebase plate 62 and are preferably integral and unitary with the base plate. Thearms 68 are preferably substantially equally spaced circumferentially from one another and are preferably slightly bowed outward when not flexed for engagement to thepump 24. Located at thedistal end 70 of eacharm 68 is a finger orclip 72, which projects generally radially inward, and resiliently snaps over theoutboard face 46 of thepump encasement 38 as thearms 68 resiliently flex from a radially outward unstressed state and in a generally radially inward direction toward a radial unstressed state and axial stressed state. - Each
clip 72 has acontact portion 74 which projects radially inward from its associatedflex arm 68 and preferably angles axially inward at anangle 78 preferably about five degrees when in a disengaged state (as best shown inFIGS. 6 and 7 ) and with respect to animaginary plane 76 disposed perpendicular to the axis ofrotation 36. From thecontact portion 74, theclip 72 has a rounded cam-like return bend 80 which extends to a generally axially outward projectingdistal tab 82 of theclip 72. Thespring clamp device 26 is preferably made from a single stamping of sheet metal or spring steel. - During assembly of the
fuel pump assembly 20, a downward projectingcylindrical shoulder 84 of themotor housing 32, disposed concentrically about theshaft 34, is received in thebase plate 62 of thespring clamp device 26 through a central hole 86 (as best shown inFIG. 5 ). Thescrews 60 are then threaded into themotor end cap 30 which rigidly holds thebase plate 62 to themotor 22 with theflex arms 68 projecting generally axially away from the motor 22 (as best shown inFIGS. 3 and 4 ). Theclips 72 of theflex arms 68 are then resiliently moved radially outward so that theclips 72 radially clear thepump housing 38 when thepump 24 is moved between them, and axially toward and coupled with themotor 22. - With the
pump 24 coupled to themotor drive shaft 34 and theflex arms 68 released, the cam-like bends 80 of theclips 72 are preferably in biased contact with a slightly roundedperipheral edge 81 of thepump encasement 38 but not yet in direct contact with theoutboard face 46. An external force applied in a radially inward direction against the mid-section of each bowedflex arm 68 causes the flex arms to generally straighten and thecontact portions 74 of theclips 72 to align parallel with the imaginary plane 76 (as best shown inFIG. 7 ). The cam-like bend 80 then assists eachclip 72 to snap over theedge 81 and slide over theoutboard face 46 in a radially inward direction. When the external force placed upon the flex arms is released, the resilience or spring force of thebowed flex arms 68 andclips 72 exert an evenly distributed and consistent force upon theplastic pump encasement 38 in an axially inward direction. If removing thepump 24 from themotor 22 is desired, a radially outward force is placed upon theclip tabs 82 which flexes thearms 68 radially outward to radially clear theclips 72 from thecylindrical pump housing 38. Once cleared, thepump 24 can then be moved axially away and de-coupled and removed from themotor 22. -
FIGS. 8 and 9 illustrate a modifiedspring clamp device 26′ wherein theflex arms 68′ extend the entire axial length of thepump 24′ andmotor 22′ and thebase plate 62′ is in biased contact with theoutboard end cap 28′ of themotor housing 32′. Preferably theend cap 28′ has a cylindrical shoulder 88 over which thebase plate 62′ is received. With this modification, separate fasteners or screws are not required. - Skilled persons will understand that the orientation of the
spring clamp device 26″ relative to themotor 22″ andpump 24″ could be reversed so that theclips 72″ engage the motor end cap orsurface 28″ and thebase plate 62″ is attached to thepump base 48″ or overlies and engages to thepump end cap 52″ (as best shown inFIG. 10 ). - While the forms of the invention herein disclosed constitute presently preferred embodiments, many others are possible. It is not intended herein to mention all the possibly equivalent forms or ramifications of the invention and it is understood that the terms used herein are merely descriptive rather than limiting and that various changes may be made without departing from the spirit or scope of the invention.
Claims (19)
1. An electric motor pump assembly comprising:
a pump;
a separate electric motor coupled to the pump along an axis of rotation; and
a spring clamp device having;
a base member carried by one of the pump and the motor;
at least two flex arms each carried by the base member and circumferentially spaced apart and extending axially along at least one portion of the pump and motor; and
a clip projecting radially inward from each flex arm adjacent a distal end of the flex arm and received by the other of the pump and motor.
2. The pump assembly set forth in claim 1 comprising:
an inboard end cap of the motor axially facing the pump; and
at least one fastener engaging the base member to the inboard end cap.
3. The pump assembly set forth in claim 2 wherein the base member is substantially disposed axially between the pump and motor.
4. The pump assembly set forth in claim 3 wherein the at least one fastener threads into the inboard end cap.
5. The pump assembly set forth in claim 1 wherein the flex arm is bowed radially outward when the spring clamp device is in a disengaged state.
6. The pump assembly set forth in claim 1 comprising a contact portion of the clip projecting radially inward from the flex arm and projecting slightly axially inward with respect to the axis of rotation when the spring clamp device is in a disengaged state, and the contact portion being biased directly against the other of the pump and motor when the spring clamp device is in an engaged state by the flex arm.
7. The pump assembly set forth in claim 6 comprising a distal tab projecting substantially axially outward from the contact portion for moving the clip radially outward against the radially inward biasing force of the flex arm to release the spring clamp device from the other of the pump and motor.
8. The pump assembly set forth in claim 1 wherein the at least two flex arms are equally spaced circumferentially about the motor and pump and are each bowed radially outward.
9. The pump assembly set forth in claim 8 comprising a contact portion of the clip projecting radially inward from each one of the plurality of flex arms and projecting slightly axially inward with respect to the axis of rotation when the spring clamp device is in the disengaged state, and the contact portion being biased directly against the other of the pump and motor when the spring clamp device is in an engaged state by the respective plurality of flex arms.
10. The pump assembly set forth in claim 9 comprising a distal tab projecting substantially axially outward from the contact portion of the clip for moving the clip radially outward against the radially inward biasing force of each one of the at least two flex arms to release the spring clamp device from the other of the pump and motor.
11. The pump assembly set forth in claim 1 comprising:
an inboard end cap of the motor axially facing the pump;
an opposite outboard end cap of the motor;
an outboard face of the pump facing axially from the motor; and
the base member being in biased contact with the outboard end cap when the clips are in biased contact with the outboard face.
12. The pump assembly set forth in claim 11 wherein the base member is planar and annular in shape.
13. A spring clamp device for preventing de-coupling of a pump from a motor of a pump sub-assembly and along an axis of rotation, the spring clamp device having:
a base member spanning radially with respect to the axis of rotation;
a plurality of arms projecting axially from the first member and spaced circumferentially from one-another about the pump sub-assembly; and
a clip projecting radially with respect to the axis of rotation and from a distal end of each one of the plurality of arms.
14. The spring clamp device set forth in claim 13 comprising an engaged state wherein the base member and the clips are biased axially away from one-another by at least a portion of the pump sub-assembly.
15. The spring clamp device set forth in claim 14 comprising:
a disengaged state wherein each one of the plurality of arms are bowed radially outward with respect to the axis of rotation; and
the engaged state causing each one of the plurality of arms to be less bowed than when in the disengaged state.
16. The spring clamp device set forth in claim 14 comprising:
the base member being in contact with an outboard surface carried by the pump sub-assembly;
the clips being in biased contact with an opposite outboard face carried by the pump sub-assembly; and
wherein the pump sub-assembly extends axially between the outboard surface and the outboard face.
17. The spring clamp device set forth in claim 13 comprising:
the base member being in contact with an outboard surface carried by the motor;
the clips being in biased contact with an outboard face carried by the pump; and
wherein the outboard surface faces axially away from to the outboard face.
18. The spring clamp device set forth in claim 13 comprising:
the base member being engaged to the motor via at least one fastener; and
the clips being in biased contact with an outboard face carried by the pump.
19. The spring clamp device set forth in claim 13 wherein the base member, the plurality of arms and the clips are unitarily formed together from a single stamping of metal.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/964,140 US20060083631A1 (en) | 2004-10-13 | 2004-10-13 | Fuel pump assembly |
IT000506A ITRM20050506A1 (en) | 2004-10-13 | 2005-10-12 | FUEL PUMP COMPLEX. |
JP2005298509A JP2006112427A (en) | 2004-10-13 | 2005-10-13 | Fuel pump assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/964,140 US20060083631A1 (en) | 2004-10-13 | 2004-10-13 | Fuel pump assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060083631A1 true US20060083631A1 (en) | 2006-04-20 |
Family
ID=36180954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/964,140 Abandoned US20060083631A1 (en) | 2004-10-13 | 2004-10-13 | Fuel pump assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060083631A1 (en) |
JP (1) | JP2006112427A (en) |
IT (1) | ITRM20050506A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080107549A1 (en) * | 2006-11-08 | 2008-05-08 | Ti Group Automotive Systems, L.L.C. | Fuel pump and filter assembly |
US20140079578A1 (en) * | 2012-09-20 | 2014-03-20 | Asmo Co., Ltd. | Electric pump |
US20220372970A1 (en) * | 2021-05-19 | 2022-11-24 | Wen-San Chou | Fixing device of motor of air compressor |
EP4170127A1 (en) * | 2021-10-22 | 2023-04-26 | A. u. K. Müller GmbH & Co. KG | Gear wheel pump |
EP4296469A1 (en) * | 2022-06-21 | 2023-12-27 | FTE automotive GmbH | Hydraulic pump and module formed from such a hydraulic pump and a receptacle |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5133699B2 (en) * | 2004-12-22 | 2013-01-30 | アクティブ ツールズ インターナショナル(ホンコン)リミティド | Compression chamber unit and method for forming such a unit |
JP4901661B2 (en) * | 2007-09-13 | 2012-03-21 | 日立オートモティブシステムズ株式会社 | Pump device and power steering device to which this pump device is applied |
TWI698581B (en) * | 2018-12-14 | 2020-07-11 | 周文三 | Conenction structure for motor of air compressor |
TWI691649B (en) * | 2018-12-17 | 2020-04-21 | 周文三 | Positioning structure of motor of air compressor |
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US3491696A (en) * | 1968-10-11 | 1970-01-27 | Henry H Howard | Centrifugal pump |
US4306841A (en) * | 1980-01-30 | 1981-12-22 | Whirlpool Corporation | Pump mounting for an automatic washer |
US4904166A (en) * | 1988-11-30 | 1990-02-27 | White Consolidated Industries, Inc. | Vertical axis motor-pump assembly for clothes washing machine |
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2004
- 2004-10-13 US US10/964,140 patent/US20060083631A1/en not_active Abandoned
-
2005
- 2005-10-12 IT IT000506A patent/ITRM20050506A1/en unknown
- 2005-10-13 JP JP2005298509A patent/JP2006112427A/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3491696A (en) * | 1968-10-11 | 1970-01-27 | Henry H Howard | Centrifugal pump |
US4306841A (en) * | 1980-01-30 | 1981-12-22 | Whirlpool Corporation | Pump mounting for an automatic washer |
US4904166A (en) * | 1988-11-30 | 1990-02-27 | White Consolidated Industries, Inc. | Vertical axis motor-pump assembly for clothes washing machine |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080107549A1 (en) * | 2006-11-08 | 2008-05-08 | Ti Group Automotive Systems, L.L.C. | Fuel pump and filter assembly |
US20140079578A1 (en) * | 2012-09-20 | 2014-03-20 | Asmo Co., Ltd. | Electric pump |
US9810223B2 (en) * | 2012-09-20 | 2017-11-07 | Asmo Co., Ltd. | Electric pump |
US10385855B2 (en) | 2012-09-20 | 2019-08-20 | Denso Corporation | Electric pump |
US20220372970A1 (en) * | 2021-05-19 | 2022-11-24 | Wen-San Chou | Fixing device of motor of air compressor |
US11913440B2 (en) * | 2021-05-19 | 2024-02-27 | Wen-San Chou | Fixing device of motor of air compressor |
EP4170127A1 (en) * | 2021-10-22 | 2023-04-26 | A. u. K. Müller GmbH & Co. KG | Gear wheel pump |
EP4296469A1 (en) * | 2022-06-21 | 2023-12-27 | FTE automotive GmbH | Hydraulic pump and module formed from such a hydraulic pump and a receptacle |
Also Published As
Publication number | Publication date |
---|---|
ITRM20050506A1 (en) | 2006-04-14 |
JP2006112427A (en) | 2006-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: WALBRO ENGINE MANAGEMENT, L.L.C., ARIZONA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ISRAELSON, KEVIN L.;ROCHE, RONALD H.;REEL/FRAME:015898/0181 Effective date: 20041010 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |