CN103261654A - Fuel supply device - Google Patents
Fuel supply device Download PDFInfo
- Publication number
- CN103261654A CN103261654A CN2011800611870A CN201180061187A CN103261654A CN 103261654 A CN103261654 A CN 103261654A CN 2011800611870 A CN2011800611870 A CN 2011800611870A CN 201180061187 A CN201180061187 A CN 201180061187A CN 103261654 A CN103261654 A CN 103261654A
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- China
- Prior art keywords
- fuel
- petrolift
- pump case
- protuberance
- pump
- 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.)
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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
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
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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
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
- F02M37/103—Mounting pumps on fuel tanks
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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
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/50—Filters arranged in or on fuel tanks
Abstract
A fuel supply device (1) is provided with a flange unit (4) mounted to the bottom wall (2b) (bottom surface) of a fuel tank (2). A fuel pump (3) is provided with a metallic housing case (20) formed so as to cover the periphery of a motor unit (30) and a pump unit (40). The pump unit (40) has a pump case (45) formed from resin. A flange (21) which makes contact with the pump case (45) is formed on the inside of the housing case (20). The fuel pump (3) is supported by the flange unit (4) via the flange (21).
Description
Technical field
The present invention relates to a kind of fuel supplying device.The application is based on December 24th, 2010 being willing to require preference 2010-288664 number in that the Japan Patent of Japanese publication is special, and the content of this application is incorporated herein.
Background technique
Generally, as the fuel supply device for vehicle of automatic two-wheeled cycle, four-wheel wagon, use the so-called built-in (Japanese: fuel supplying device イ Application タ Application Network formula) of configuration petrolift in fuel tank.As this fuel supplying device, known have a kind of pump assembly (" petrolift " that be equivalent to the application) be contained in flange unit, and the structure (reference example such as patent documentation 1) of glass shell be installed above it.
In the petrolift of the fuel supplying device of patent documentation 1, motor, pump portion, pressure regulator and safety check one are housed in the frame (Japanese: シ ェ ル ケ ー ス) in (" case body " that be equivalent to the application) of steel.Distolateral riveted fixing at case body cylindraceous has inlet cover (" pump case " that be equivalent to the application).
In addition, the storage tank portion that accumulates for fuel is formed on the bottom of flange unit.Locator protrusions from storage tank portion towards petrolift with the state setting that erects.In addition, from another distolateral glass shell of installing of case body, just can utilize flange unit and last cup shell that petrolift is supported (with reference to Fig. 1 of patent documentation 1) by a distolateral butt that makes locator protrusions and pump case.
Contain the impeller that is connected with shaft of motor in the inside of pump case herein.Yet when impeller contacted with the internal surface of pump case, slip resistance increased and causes the efficient of petrolift to reduce.Therefore, the gap of the internal surface of pump case and impeller need be maintained constant, in case the uppermost leaf wheel contacts with the internal surface of pump case.
But in the structure of locator protrusions and pump case butt as mentioned above, when petrolift was discharged fuel, pump case was subjected to the reaction force of head pressure, and made the distortion of pump portion.In addition, when petrolift bore very big vibration, impulsive load, vibration, impulsive load can directly be passed to pump case from locator protrusions.Consequently, pump case deforms, and can't be maintained the internal surface of pump case and the gap of impeller constant.Therefore, the pump case of patent documentation 1 is to be formed by modes such as aluminium compression mouldings by metal, thereby even if be subjected to the reaction force of head pressure, also can not deform.
The prior art document
Patent documentation
Patent documentation 1: the Japan Patent spy opens the 2009-62813 communique
Summary of the invention
Invent technical problem to be solved
Yet, be purpose to reduce cost, can consider the material of pump case is changed into resin from metals such as aluminium.But, as a rule, when the material of pump case is changed into resin from aluminium, can reduce the intensity of pump case.Therefore, in the structure of locator protrusions and pump case butt as mentioned above, the pump case that is formed by resin can deform.When pump case deformed, the internal surface of pump case and the gap of impeller had just disappeared, and the slip resistance that produces because of contacting between the internal surface of impeller and pump case is increased, thereby the efficient of petrolift is reduced.
The invention provides a kind of fuel supplying device cheaply, this fuel supplying device can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
The technological scheme that the technical solution problem adopts
In order to solve the problems of the technologies described above, the fuel supplying device of the present invention's first technological scheme comprises: petrolift, and this petrolift is disposed in the fuel tank, and the fuel in the above-mentioned fuel tank is drawn the back carry towards internal-combustion engine pressure; And housing, this housing supports above-mentioned fuel tank, and is installed on the wall of above-mentioned fuel tank.In addition, above-mentioned petrolift comprises: motor part; Pump portion, this pump portion is located at the bottom of above-mentioned motor part; And metal case body, this case body will cover around above-mentioned motor part and the said pump portion.In addition, said pump portion has the pump case that is formed by resin.In addition, be formed with protuberance with said pump housing butt in the inboard of above-mentioned case body.In addition, above-mentioned petrolift is supported by above-mentioned housing via above-mentioned protuberance.
The fuel supplying device of first technological scheme according to the present invention, in the time of in petrolift is positioned in housing, petrolift is supported by housing via the protuberance of case body.Therefore, even if produce the external force such as reaction force of head pressure, external force can directly not be passed to resinous pump case yet.Thereby, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
In addition, owing to form pump case by resin, therefore, for example compared by the situation that modes such as aluminium compression moulding form by metal with pump case, can form pump case with low cost.Thereby, fuel supplying device cheaply can be provided.
In addition, in the fuel supplying device of the present invention's second technological scheme, in above-mentioned housing, be provided with the base portion that the said pump housing is supported via above-mentioned protuberance.
The fuel supplying device of second technological scheme according to the present invention, in the time of in petrolift is positioned in housing, the protuberance butt of the base portion of housing and case body.Therefore, base portion not with the direct butt of pump case, but can support petrolift via protuberance.Consequently, even if produce the external force such as reaction force of head pressure, external force can directly not be passed to pump case from base portion yet.Thereby, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case reliably, and can prevent effectively that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
In addition, the root that forms via above-mentioned protuberance of the fuel supplying device of the present invention's the 3rd technological scheme supports the said pump housing.
Therefore the root of protuberance, is had the higher intensity of intensity than the front end of protuberance by the supporting of the lower end of shell.The fuel supplying device of the 3rd technological scheme according to the present invention, base portion supports pump case via the root of the protuberance with intensity.Therefore, can suppress the distortion of protuberance.Thereby, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
In addition, in the fuel supplying device of four embodiment of the invention, between said pump housing and above-mentioned protuberance, be provided with sealing component.
According to the fuel supplying device of four embodiment of the invention, even if produce for example external force such as reaction force of head pressure, can not utilize the sealing component that is located between pump case and the protuberance to absorb external force.Therefore, can relax the external force that is passed to pump case.Therefore, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.In addition, can keep stable fuel pump performance for a long time.
In addition, in the fuel supplying device of the present invention's the 5th technological scheme, above-mentioned protuberance constitutes the inward flange portion of the lower end that is formed at above-mentioned case body.
The fuel supplying device of the 5th technological scheme according to the present invention can form protuberance securely, therefore, can suppress the distortion of protuberance.Thereby, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case reliably, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.In addition, can be reliably with motor part and pump integrally.In addition, sealing component and pump case and protuberance are close to reliably, therefore, can improve sealing.
In addition, the fuel supplying device of the present invention's the 6th technological scheme is installed on the diapire of above-mentioned fuel tank, uploads in the above-mentioned base portion that is formed at above-mentioned housing and is equipped with above-mentioned petrolift.
The fuel supplying device of the 6th technological scheme according to the present invention can be suitable for said structure in the fuel supplying device of the diapire that is installed on fuel tank.The downside that said structure especially can be used in petrolift ideally is provided with in the fuel supplying device of so-called underneath type of flange unit.Therefore, in the fuel supplying device that is fixed in the fuel tank downside, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case reliably, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
The invention effect
According to the fuel supplying device of embodiment of the present invention, in the time of in petrolift is positioned in housing, petrolift is supported by housing via the protuberance of case body.Therefore, even if produce the external force such as reaction force of head pressure, external force can directly not be passed to resinous pump case yet.Thereby, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.
In addition, owing to form pump case by resin, therefore, for example compared by the situation that modes such as aluminium compression moulding form by metal with pump case, can form pump case with low cost.Thereby, fuel supplying device cheaply can be provided.
Description of drawings
Fig. 1 is the stereogram of the fuel supplying device of expression first embodiment of the invention.
Fig. 2 is the sectional view along the A-A line of Fig. 1.
Fig. 3 is the enlarged view of the regional B of Fig. 2.
Fig. 4 is the stereogram of the flange unit of first embodiment of the invention.
Fig. 5 is the stereogram of the fuel supplying device of expression second embodiment of the invention.
Fig. 6 is the sectional view along the C-C line of Fig. 5.
Fig. 7 is the enlarged view of the regional D of Fig. 6.
Fig. 8 is the stereogram of the following glass shell of expression second embodiment of the invention.
Embodiment
(fuel supplying device of first mode of execution, underneath type)
Below, with reference to accompanying drawing, the fuel supplying device of first embodiment of the invention is described.In addition, the fuel supplying device of underneath type has petrolift and is installed on the top loaded type fuel supplying device on fuel tank top and the underneath type fuel supplying device that petrolift is installed on fuel tank bottom.In first embodiment of the invention, be that example describes with the underneath type.In addition, only the axial relative position of petrolift is shown as upside, downside simply.
(petrolift)
Petrolift 3 forms the substantial cylindrical shape, has the motor part 30 that is disposed at petrolift 3 upsides and the pump portion 40 that is disposed at petrolift 3 downsides.
In motor part 30, for example can use the direct current motor 30a of charged brush (not shown).
Centre in motor part 30 disposes output shaft 30b, and this output shaft 30b is become and can freely rotate by the following side shaft pivot suspension of the upside of motor part 30 and pump portion 40.In addition, at pump portion 40 sides of the output shaft 30b D type tangent plane (not shown) of position restriction usefulness as described later.
In addition, at the upside of motor part 30, the pair of motors terminal 32 that engages with brush electricity is arranged to the state that erects along central shaft O at the upside of petrolift 3.Pair of motors terminal 32 is connected with wire harness 6.Utilize wire harness 6 that external power supply is electrically connected with motor part 60, thereby supply with the electric power that is used for driving direct current motor 30a from external power supply.
In addition, the diameter of the Terminal of motor 32 of the upside of motor part 30 and the periphery of brush is slightly littler than the diameter of the other parts of motor part 30, thereby forms stepped part 30c.The upper end that case body 20 described later is arranged in stepped part 30c riveted joint.
In addition, the upside in motor part 30 is provided with the discharge port 31 that fuel is discharged and the safety check 74 that is communicated with this discharge port 31.Discharge port 31 and safety check 74 and be connected with fuel flow path described later unit 52, thereby be communicated with the fuel flow path unit.
(pump portion)
In pump portion 40, use the pump of the non-volume type with impeller 47.Pump portion 40 is made of impeller 47 and pump case 45 that the integral body of impeller 47 is covered.
Be formed with a plurality of blade parts (not shown) at the upper surface of impeller 47 and the outer circumferential side of lower surface.The lower surface and the upper surface that run through impeller 47 between a plurality of impeller portion.In addition, be formed with the lower surface that runs through impeller 47 and the fuel flow path hole (not shown) of upper surface between the inserting hole 47c that makes progress in the footpath of impeller 47 and the blade part.When making impeller 47 rotation when direct current motor 30a is driven, fuel flow through the fuel flow path hole and from the downside of impeller up side pressure carry.
(pump case)
The pump case 45 that the integral body of impeller 47 is covered is made of lower shell body 42, upper shell 43 and middle shell 44.Particularly, pump case 45 forms by using lower shell body 42 and upper shell 43 that the middle shell 44 that the inboard disposes impeller 47 is clamped, and covers the integral body of impeller 47 by this.In addition, lower shell body 42, upper shell 43 and middle shell 44 are arranged side by side with the order of pressing housing 42, middle shell 44, upper shell 43 along the mode of central shaft from downside towards upside.
Each housing of lower shell body 42, upper shell 43 and middle shell 44 constitutes by the resin of oil resistance, and it forms by for example molding and forming etc.
Outside diameter at the lower surface 42b of lower shell body 42 is formed with side-prominent fuel suction port 41 down.Fuel suction port 41 forms roughly tubular.The inboard of fuel suction port 41 constitutes the path of fuel, and the outside of fuel suction port 41 and flange unit described later 4 are chimeric.Therefore, fuel suction port 41 is communicated with the filter unit (not shown) that filter discharge tube 51 reaches and fuel supplying device 1 split arranges that is formed at flange unit 4.
In addition, the edge portion at the lower surface 42b of lower shell body 42 is formed with stepped part 48.Stepped part 48 is to form by the lower surface 42b side undergauge that makes lower shell body 42.On stepped part 48, in the mode that contacts with the bottom 48a of stepped part 48 square ring 46 as sealing component is installed.Subtending ring 46 describes in the back.
On the upper surface 42a of lower shell body 42, be the roughly slot part of C word shape (not shown) when being formed with from end on observation.The distolateral lower surface 42b that runs through lower shell body 42 and the fuel flow path hole (not shown) of upper surface 42a of being formed with at slot part.The fuel flow path hole is communicated with fuel suction port 41, flows through for the fuel that sucks from fuel suction port 41.
In the inboard of middle shell 44, so that the central shaft of middle shell 44 mode consistent with the central shaft of impeller 47 disposes impeller 47.The internal diameter of middle shell 44 is bigger slightly than the external diameter of impeller 47.In addition, at the internal surface 44a(of middle shell 44 be the internal surface 44a of pump case) and the outer circumferential face of impeller 47 between be formed with clearance C 1(with reference to Fig. 3).Herein, the efficient of petrolift 3 depends on the gap between pump case 45 and the impeller 47.Therefore, clearance C 1 is set at specified value according to the efficient of desired petrolift 3.
Herein, above-mentioned motor part 30 and pump portion 40 are covered by case body 20.Case body 20 is the roughly members cylindraceous that are made of iron etc., and it for example forms by seamless steel pipe (seamless pipe) is cut off.
The upper side end of case body 20 constitutes caulking part 22, and is riveted on the stepped part 30c that is formed at motor part 30.
(protuberance)
The internal diameter of the front end 21a of protuberance 21 forms bigger slightly than the external diameter of the sidepiece 48b of the stepped part 48 that is formed at lower shell body 42.Therefore, dispose the sidepiece 48b of lower shell body 42 at the internal side diameter of the front end 21a of protuberance 21.
Between the protuberance 21 of the stepped part 48 of pump case 45 and case body 20, be provided with square ring 46.Square ring 46 is members that the cross section forms essentially rectangular, is made of the material of oil resistance excellences such as fluorine rubber.The axial thickness setting of square ring 46 becomes littler than the axial height of the stepped part 48 that is formed at pump case 45.
(going up the cup shell)
The cup shell 25 of going up that is enclosed within petrolift 3 is members that resin by the oil resistance excellence forms, the tubular bottom having, and it is to form by for example molding and forming etc.
Therefore, be formed with the assembly department 61 of liquid level detector 60 at the upside of last cup shell 25.Assembly department 61 is to extend and the tabular member of formation towards radial outside.Assembly department 61 on forming during cup shell 25 simultaneously by injection molded type.Liquid level detector 60 is fixed in assembly department 61 by modes such as cooperations.
Position on the outer circumferential face of the large-diameter portion 26 of tube portion 24, corresponding with the card complex hole of the snap-latch piece 15a that is located at flange unit 4 is formed with engaging protuberance 25a.Snap-latch piece 15a of the engaging protuberance 25a of cup shell 25 and flange unit 4 cooperates on these, and makes cup shell 25 integrated with flange unit 4.
Inboard in the tube portion 24 of last cup shell 25 is provided with the fuel flow path unit 52 that flows through for the fuel from petrolift 3 discharges.The cross section of fuel flow path unit 52 forms roughly L word shape, and is arranged on upside end face from the minor diameter part 27 of tube portion 24 in the scope of the outer circumferential face of tube portion 24.
In addition, the inboard at the minor diameter part 27 of last cup shell 25 is being provided with pressure regulator 76 across central shaft O with an opposite side of safety check 74.Pressure regulator 76 is for the fuel pressure in the fuel flow path unit 52 is remained constant member.Produce in fuel flow path unit 52 under the situation of unnecessary fuel pressure, pressure regulator 76 is expelled to storage tank portion 11 with the fuel in the fuel flow path unit 52.
(flange unit)
Flange unit 4 is made of the lip part 12 of disc-shape roughly, the engagement portion 15 that is formed at lip part 12 upsides, the unit main body 10 that is formed at lip part 12 downsides.
Upside at lip part 12 is provided with engagement portion 15, and this engagement portion 15 engages with the protuberance 25a that engages that is formed at cup shell 25 described later.Engagement portion 15 forms the circular shape during from end on observation.A plurality of positions of 15 periphery in the engagement portion (being four positions in the present embodiment) are formed with up side-prominent snap-latch piece 15a.Snap-latch piece 15a forms and can carry out resiliently deformable towards the direction of its forward end enlarged-diameter.In addition, snap-latch piece 15a be formed with can with the card complex hole that engages protuberance 25a engaging that is formed at cup shell 25.By making cup shell 25 cooperate (snap fit) with engagement portion 15, just flange unit 4 and last cup shell 25 can be fixed.
Unit main body 10 forms the tubular with bottom, is enclosed within on the petrolift 3 from the downside of petrolift 3.It is bigger than the external diameter of petrolift 3 that the inner peripheral surface 10a of unit main body 10 sets diameter for.In addition, between the outer circumferential face of the inner peripheral surface 10a of unit main body 10 and petrolift 3, be formed with the gap.The fuel that utilizes this gap to form pressure regulator 76 is communicated with storage tank portion 11 return stream.
Be formed with connector 14 in unit main body 10.Connector 14 is the members with tubular of bottom, and has the connector chimeric surface towards the radial outside opening.
Be provided with bonder terminal 34 in the inside of connector 14.One distolateral 34a of bonder terminal 34 is interior side-prominent towards connector 14.Be connected with the aerial lug (not shown) that is electrically connected with external power supply (not shown) at a distolateral 34a of this bonder terminal 34.
In addition, the distolateral 34b of another of bonder terminal 34 last side-prominent towards lip part 12.Wire harness 6 is connected with another distolateral 34b of bonder terminal 34, thereby from external power supply motor part 30 and liquid level detector 60 is powered.
Inner peripheral surface 10a and bottom surface 10b in the inboard of unit main body 10 by unit main body 10 are formed with the space.Work as the storage tank portion 11 that accumulates for fuel in this space.In addition, be formed with not shown filter ingress pipe, filter discharge tube 51 and the fuel take-off pipe 57 of the stream that is communicated with to constitute fuel with storage tank portion 11 in the outside of unit main body 10.
Filter ingress pipe and filter discharge tube 51 with and the not shown filter unit that arranges of fuel supplying device 1 split be communicated with.The fuel that accumulates in the storage tank portion 11 imports filter unit via the filter ingress pipe, and is discharged from after filtering.
Then, petrolift 3 draws fuel via filter discharge tube 51 from the fuel suction port 41 of pump portion 40.Then, fuel flows through in the pump case 45 to be carried towards the last side pressure of motor part 30, and after flowing through fuel flow path unit 52, is carried to internal-combustion engine (not shown) via fuel take-off pipe 57.
(base portion)
Be formed with base portion 65 in the inboard of unit main body 10.Base portion 65 is that the downside undergauge by the inner peripheral surface 10a that makes unit main body 10 forms.In the present embodiment, the downside undergauge of the inner peripheral surface 10a of unit main body 10 and form storage tank portion 11.In addition, form base portion 65 by this storage tank portion 11.With petrolift 3 mountings after base portion 65, the upside of last cup shell 25 from petrolift 3 put, and will go up glass shell 25 and be fixed in flange unit 4, by this, petrolift 3 is supported by flange unit 4.
The internal diameter of base portion 65 is set for bigger and littler than the external diameter of case body 20 than the front end 21a internal diameter of protuberance 21.Set the internal diameter of base portion 65 as mentioned above, make the upper surface 65a of base portion 65 and the root 21b butt of protuberance 21, thereby petrolift 3 is positioned on the flange unit 4.
In addition, as mentioned above, protuberance 21 is that therefore, the root 21b of protuberance 21 is connected with the end of case body 20 by crooked formation of downside end with case body 20.Therefore, the intensity height of the front end 21a of the strength ratio protuberance 21 of the front end 21b of protuberance 21.Therefore, comparatively it is desirable to, make the upper surface 65a of base portion 65 and the root 21b butt of protuberance 21 as mentioned above.
(effect)
According to present embodiment, in the time of in petrolift 3 is positioned in flange unit 4, petrolift 3 is supported by flange unit 4 by the protuberance 21 of case body 20.Therefore, even if produce the external force such as reaction force of head pressure, external force can directly not be passed to resinous pump case 45 yet.By this, can relax the external force that is passed to pump case 45, therefore, can suppress the distortion of pump case 45, keep clearance C 1, C2 and C3 between impeller 47 and the pump case 45.Thereby, can suppress contacting between the internal surface of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.
In addition, owing to forms pump case 45 by resin, therefore, form the situation of pump case 45 compared with for example passing through aluminium compression moulding etc. by metal, can form pump case 45 with low cost.Therefore, can provide fuel supplying device 1 cheaply.
In addition, according to present embodiment, in the time of in petrolift 3 is positioned in flange unit 4, the base portion 65 of flange unit 4 and protuberance 21 butts of case body 20.Therefore, base portion 65 not with pump case 45 direct butts, but can support via 21 pairs of petrolifts 3 of protuberance.By this, even if produce the external force such as reaction force of head pressure, external force can directly not be passed to pump case 45 from base portion 65 yet.Consequently, the distortion of pump case 45 can be suppressed, thereby clearance C 1, C2 and C3 between impeller 47 and the pump case 45 can be kept.Thereby, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45 reliably, and can prevent effectively that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.
In addition, in the present embodiment, therefore the root 21b of protuberance 21, is had the intensity higher than the front end 21a of protuberance 21 by the supporting of the lower end of case body 20.That is, according to the fuel supplying device 1 of present embodiment, the pump case 45 of root 21b of the protuberance 21 of base portion 65 by having intensity supports, and therefore, can suppress the distortion of protuberance 21.Thereby, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.
In addition, according to present embodiment, even if produce for example external force such as reaction force of head pressure, also can utilize the square ring 46(sealing component that is located between pump case 45 and the protuberance 21) absorb external force.Therefore, can relax the external force that is passed to pump case 45.Therefore, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.In addition, can keep the performance of stable petrolift 3 for a long time.
In addition, according to present embodiment, protuberance 21 can be formed securely, therefore, the distortion of protuberance 21 can be suppressed.Thereby, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45 reliably, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.In addition, can be reliably that motor part 30 is integrated with pump portion 40.In addition, square ring 46 is close to reliably with pump case 45 and protuberance 21, therefore, can improve sealing.
In addition, according to present embodiment, in the fuel supplying device 1 of the diapire 2b that is installed on fuel tank 2, be suitable for said structure.Especially the downside at petrolift 3 is provided with flange unit 4, therefore, can be used in ideally in the fuel supplying device 1 of so-called underneath type.Thereby, in the fuel supplying device 1 of the downside that is fixed in fuel tank 2, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45 reliably, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.
(fuel supplying device of second mode of execution, top loaded type)
Then, use Fig. 5 to Fig. 8, second embodiment of the invention is described.In the first embodiment, be illustrated being suitable for situation of the present invention in the fuel supplying device 1 of the so-called underneath type that is installed on fuel tank 2 bottoms at fuel tank.Yet, in second mode of execution, describe being suitable for situation of the present invention in the fuel supplying device 1 of the so-called top loaded type that is installed on fuel tank 2 tops at fuel tank.In this, second embodiment of the invention is different with first embodiment of the invention.In addition, to the component part identical with the variation of first embodiment of the invention and first embodiment of the invention, omit detailed explanation.
The fuel supplying device 1 of second embodiment of the invention inserts and is formed at the upper wall 2c(of fuel tank 2 with reference to Fig. 6) opening portion 2a, and be installed on the upper wall 2c of fuel tank 2.Fuel supplying device 1 comprises: be disposed at the petrolift 3 in the fuel tank 2; The following glass of shell 100(" housing " that is enclosed within on the petrolift 3 and petrolift 3 is supported); And the flange unit 4 that is installed on the upper wall 2c of fuel tank 2.
(flange unit)
Be formed with annulus 13 at lip part 12, corresponding with the opening portion 2a of fuel tank 2 position.By lip part 12 is installed on fuel tank 2, more be exposed to the outside of fuel tank 2 by the part of upside than lip part 12.In addition, than lip part 12 more on the lower the part of side be immersed in the fuel in the fuel tank 2.
Downside at lip part 12 is provided with engagement portion 15, and this engagement portion 15 engages with the protuberance 25a that engages that is formed at down cup shell 100 described later.A plurality of positions of 15 periphery in the engagement portion (being four positions in the present embodiment) are formed with down side-prominent snap-latch piece 15a.By cup shell 100 is cooperated with engagement portion 15, just flange unit 4 and following glass shell 100 can be fixed.
Unit main body 10 forms the tubular with bottom, is enclosed within on the petrolift 3 from the downside of petrolift 3.Be formed with fuel flow path unit 52 in the inboard of unit main body 10.
Fuel flow path unit 52 is communicated with pressure regulator 76, safety check 74 and fuel take-off pipe 57.
(following glass shell)
The following glass shell 100 that is enclosed within the downside of petrolift 3 is members that the resin by the oil resistance excellence forms, that have the tubular of bottom, and it is to form by for example molding and forming etc.
Be formed with the assembly department 61 of liquid level detector 60 at the radial outside of following glass shell 100.Assembly department 61 is to extend and the tabular member of formation towards radial outside.Assembly department 61 on forming during cup shell 25 simultaneously by injection molded type.
In addition, the downside at following glass shell 100 is equipped with filter unit 90.
Filter unit 90 is communicated with fuel suction port 41 via filter discharge tube 51.Fuel in the fuel tank 2 imports the fuel suction port 41 of pump portion 40 via filter unit 90 and filter discharge tube 51.Then, fuel flows through in the pump case 45 to be carried towards the last side pressure of motor part 30, and after flowing through fuel flow path unit 52, is carried to internal-combustion engine (not shown) via fuel take-off pipe 57.
(base portion)
In addition, as shown in Figures 7 and 8, be formed with base portion 65 in the inboard of following glass shell 100.Base portion 65 is that the downside undergauge by the inner peripheral surface 100a that makes unit main body 100 forms.With petrolift 3 mountings after the base portion 65 of following glass shell 100, the upside of flange unit 4 from petrolift 3 put, and flange unit 4 is fixed in following glass shell 100.Consequently, the case body 20 of petrolift 3 is supported to the state with base 65 butts of following glass shell 100.
(effect of second mode of execution)
According to present embodiment, in the fuel supplying device 1 of the upper wall 2c that is installed on fuel tank 2, be suitable for said structure.The upside that said structure especially can be used in petrolift 3 ideally is provided with in the fuel supplying device 1 of so-called top loaded type of flange unit 4.Therefore, in the fuel supplying device 1 that is fixed in fuel tank 2 upsides, can suppress contacting between the internal surface 44a of the distortion of the pump case 45 that formed by resin and impeller 47 and pump case 45 reliably, and can prevent that the efficient of the petrolift 3 that the increase because of slip resistance causes from reducing.
In addition, the present invention is not limited to above-mentioned mode of execution.
In first embodiment of the invention, make the downside undergauge of the inner peripheral surface 100a of unit main body 10 form storage tank portion 11, and form base portion 65 by this storage tank portion 11.Yet, also can by with storage tank portion 11 splits inner peripheral surface 10a is set diameter reducing part form base portion 65.Yet, effectively using the space of flange unit 4 to arrange on base portion 65 these aspects, first embodiment of the invention has superiority.
In first embodiment of the invention, carry out bending by the downside end to case body 20 and wait to form protuberance 21.Yet, for example also can after the formation protuberance is as another part, by modes such as welding the end of this protuberance with case body 20 be connected.Yet, because protuberance 21 is integrally formed with case body 20, therefore, can form protuberance 21 with low cost, and on this aspect of excellent strength, first embodiment of the invention has superiority.
In first embodiment of the invention, the sealing component as being configured between pump case 45 and the protuberance 21 has adopted square ring 46.Yet sealing component is not limited to square ring 46, also can be O shape ring.In addition, when being assembled into case body 20 on the petrolift 3, also can be by between pump case 45 and protuberance 21, disposing sealing component at the stepped part 48 coating silicone of pump case 45 etc.
Industrial utilizability
According to the present invention, can suppress contacting between the internal surface of the distortion of the pump case that formed by resin and impeller and pump case, and can prevent that the efficient of the petrolift that the increase because of slip resistance causes from reducing.In addition, can form pump case with low cost, and fuel supplying device cheaply can be provided.
Symbol description
1 fuel supplying device
2 fuel tanks
The 2b diapire
3 petrolifts
4 flange unit (housing)
20 case bodies
21 protuberances
The 21b root
30 motor part
40 pump portions
46 square rings (sealing component)
65 base portion
Claims (6)
1. fuel supplying device comprises:
Petrolift, this petrolift is disposed in the fuel tank, and the fuel in the described fuel tank is drawn the back carry towards internal-combustion engine pressure; And
Housing, this housing supports described fuel tank, and is installed on the wall of described fuel tank,
It is characterized in that,
Described petrolift comprises:
Motor part;
Pump portion, this pump portion is located at the bottom of described motor part; And
Metal case body, this case body will cover around described motor part and the described pump portion,
Described pump portion has the pump case that is formed by resin,
Be formed with the protuberance with described pump case butt in the inboard of described case body,
Described petrolift is supported by described housing via described protuberance.
2. fuel supplying device as claimed in claim 1 is characterized in that,
In described housing, be provided with the base portion that described pump case is supported via described protuberance.
3. fuel supplying device as claimed in claim 2 is characterized in that,
Described base portion supports described pump case via the root of described protuberance.
4. as each described fuel supplying device in the claim 1 to 3, it is characterized in that,
Between described pump case and described protuberance, be provided with sealing component.
5. as each described fuel supplying device in the claim 1 to 4, it is characterized in that,
Described lip part is the inward flange portion that is formed at the lower end of described case body.
6. as each described fuel supplying device in the claim 1 to 5, it is characterized in that,
Described housing is installed on the diapire of described fuel tank, uploads in the described base portion that is formed at described housing and is equipped with described petrolift.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-288664 | 2010-12-24 | ||
| JP2010288664A JP5777878B2 (en) | 2010-12-24 | 2010-12-24 | Fuel supply device |
| PCT/JP2011/079483 WO2012086634A1 (en) | 2010-12-24 | 2011-12-20 | Fuel supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103261654A true CN103261654A (en) | 2013-08-21 |
| CN103261654B CN103261654B (en) | 2016-02-17 |
Family
ID=46313903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180061187.0A Expired - Fee Related CN103261654B (en) | 2010-12-24 | 2011-12-20 | Fuel supplying device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5777878B2 (en) |
| CN (1) | CN103261654B (en) |
| BR (1) | BR112013016016B1 (en) |
| WO (1) | WO2012086634A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133303A (en) * | 2014-03-28 | 2016-11-16 | 株式会社京浜 | Fuel supply system |
| CN106533133A (en) * | 2016-12-01 | 2017-03-22 | 南通沃特光电科技有限公司 | Packaging method of high-voltage frequency converter power unit |
| CN111120163A (en) * | 2015-07-30 | 2020-05-08 | 德尔福技术有限公司 | Fluid delivery module |
| CN111670301A (en) * | 2018-02-01 | 2020-09-15 | 株式会社电装 | Fuel supply device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6260865B2 (en) * | 2014-03-28 | 2018-01-17 | 株式会社ケーヒン | Fuel supply device |
| JP6433011B2 (en) * | 2014-03-28 | 2018-12-05 | 株式会社ケーヒン | Fuel supply device |
| JP6510281B2 (en) * | 2015-03-13 | 2019-05-08 | 株式会社ケーヒン | Fuel supply system |
| JP6661736B1 (en) * | 2018-11-30 | 2020-03-11 | 株式会社ケーヒン | Fuel supply device |
| JP6840274B1 (en) * | 2020-01-08 | 2021-03-10 | 三菱電機株式会社 | Fuel supply device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270899A (en) * | 1999-04-16 | 2000-10-25 | 株式会社美姿把 | Fuel supply device |
| CN101238284A (en) * | 2005-07-06 | 2008-08-06 | 株式会社美姿把 | Fuel pump |
| JP2010133263A (en) * | 2008-12-02 | 2010-06-17 | Mitsuba Corp | Fuel supply system |
| JP2010180856A (en) * | 2009-02-09 | 2010-08-19 | Mitsuba Corp | Fuel pump and fuel supply device using fuel pump |
| WO2010104058A1 (en) * | 2009-03-09 | 2010-09-16 | 株式会社ミツバ | Pressure regulator and fuel supply device |
-
2010
- 2010-12-24 JP JP2010288664A patent/JP5777878B2/en not_active Expired - Fee Related
-
2011
- 2011-12-20 WO PCT/JP2011/079483 patent/WO2012086634A1/en active Application Filing
- 2011-12-20 BR BR112013016016-0A patent/BR112013016016B1/en not_active IP Right Cessation
- 2011-12-20 CN CN201180061187.0A patent/CN103261654B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270899A (en) * | 1999-04-16 | 2000-10-25 | 株式会社美姿把 | Fuel supply device |
| CN101238284A (en) * | 2005-07-06 | 2008-08-06 | 株式会社美姿把 | Fuel pump |
| JP2010133263A (en) * | 2008-12-02 | 2010-06-17 | Mitsuba Corp | Fuel supply system |
| JP2010180856A (en) * | 2009-02-09 | 2010-08-19 | Mitsuba Corp | Fuel pump and fuel supply device using fuel pump |
| WO2010104058A1 (en) * | 2009-03-09 | 2010-09-16 | 株式会社ミツバ | Pressure regulator and fuel supply device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133303A (en) * | 2014-03-28 | 2016-11-16 | 株式会社京浜 | Fuel supply system |
| CN111120163A (en) * | 2015-07-30 | 2020-05-08 | 德尔福技术有限公司 | Fluid delivery module |
| CN106533133A (en) * | 2016-12-01 | 2017-03-22 | 南通沃特光电科技有限公司 | Packaging method of high-voltage frequency converter power unit |
| CN111670301A (en) * | 2018-02-01 | 2020-09-15 | 株式会社电装 | Fuel supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112013016016A2 (en) | 2018-07-10 |
| JP5777878B2 (en) | 2015-09-09 |
| JP2012136975A (en) | 2012-07-19 |
| CN103261654B (en) | 2016-02-17 |
| BR112013016016B1 (en) | 2020-12-29 |
| WO2012086634A1 (en) | 2012-06-28 |
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