CN102913357A - Electric fuel pump - Google Patents
Electric fuel pump Download PDFInfo
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- CN102913357A CN102913357A CN2011102203793A CN201110220379A CN102913357A CN 102913357 A CN102913357 A CN 102913357A CN 2011102203793 A CN2011102203793 A CN 2011102203793A CN 201110220379 A CN201110220379 A CN 201110220379A CN 102913357 A CN102913357 A CN 102913357A
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- magnetic shoe
- dividing plate
- combination
- stator
- brush holder
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Abstract
An electric fuel pump comprises an end cover assembly, a stator assembly, an armature, and a pump station assembly; a brush bracket is arranged at the lower end of the end cover assembly; the stator assembly comprises a stator casing, a left magnetic shoe, a right magnetic shoe, and a metal spring leaf between one end of the left magnetic shoe and one end of the right magnetic shoe, wherein the left and the right magnetic shoes are placed in the stator casing; the armature is arranged at the inner center of the stator casing; a pump casing with a pump cover at the lower end is arranged at the outer end of the pump station assembly; the electric fuel pump is characterized in that a brush bracket lug boss is arranged at one end of the bottom surface of the peripheral wall of the brush bracket in a downward extending manner; a magnetic shoe partition board is arranged between the other end of the left magnetic shoe and the other end of the right magnetic shoe; a magnetic shoe partition board groove is formed at the middle part of the end surface of the upper end of the magnetic shoe partition board; a magnetic shoe partition board lug boss is arranged at the middle part of the end surface of the lower end of the magnetic shoe partition board in a downward extending manner; a magnetic shoe partition board outer wing is arranged at each of the lower ends, the middle parts and the upper end parts of the left side and the right side of the magnetic shoe partition board; a magnetic shoe partition board inner wing is arranged at each of the upper end parts and the lower end parts of the left side and the right side of the magnetic shoe partition board; and a pump casing groove is formed at one end of the end surface of the upper end of the peripheral wall of the pump casing. The electric fuel pump is applicable to electronic control fuel injection systems of automobiles.
Description
Technical field
The present invention relates to a kind of fuel pump, particularly relate to a kind of electric fuel punp.
Background technique
The effect of electric fuel punp is with fuel pressurization, and pumps into continuously oil supply pipeline, fuel system fuel oil enough and that have certain pressure.Electric fuel punp is made of end cap combination, stator combination, armature and pumping plant combination usually, the motor portion of electric fuel punp comprises the permanent magnet that is fixed on the shell and produces the armature of electromagnetic torque and be installed in the brushgear that end cap makes up, the permanent magnet motor energising namely drives pump housing rotation, fuel oil is sucked from filler opening, the electric fuel punp inside of flowing through, extrude from oil outlet again, to the oil-fired system fuel feeding.
For guaranteeing the normal operation of electric fuel punp, and the working life that ensures electric fuel punp, the high leak tightness that end cap combination, stator combination and the pumping plant of electric fuel punp makes up the junction of three parts is very important, if the electric fuel punp upper shell is combined the flatness error on plane with lower shell body overproof, will cause gas leakage, oil impregnate, affect the oil pump capacity of electric fuel punp and go out oil pressure.In addition, it is even more important that end cap combination, stator combination and the pumping plant of electric fuel punp makes up in the assembly process of junction of three parts the location of upper shell and lower shell body, also is the key factor that directly affects assembly quality.
Existing a kind of electric fuel punp that is made of end cap combination, stator combination, armature and pumping plant combination, it adopts two metal clipss, a stator casing in stator combination.To come the stretching magnetic shoe with two metal clipss in this stator combined structure, stator casing because to satisfy fuel pump seal request can not open locating notch, can only realize by anchor clamps one by one for the location that end cap combination and pumping plant make up.The shortcoming of this stator combined structure is that assembly fixture is complicated, and the assembly accumulation error is larger, and manufacturing efficiency is low.
The electric fuel punp that existing another kind is made of end cap combination, stator combination, armature and pumping plant combination, it adopts a stator casing in stator combination, and come the stretching magnetic shoe with a metal clips between the end of the left and right magnetic shoe in stator casing, between the other end of left and right magnetic shoe and the long baffle plate that stretches out on the brush holder with end cap combination come the stretching magnetic shoe, utilize simultaneously the long baffle plate that stretches out on the brush holder of end cap combination to realize the location that end cap makes up.The shortcoming of this structure is that the long baffle plate that stretches out on the brush holder of end cap combination is so that the part molding and forming is difficult, when making up, assembling stator need load onto first the end cap combination with electrical apparatus element such as inductance, electric capacity, this has not only increased assembling difficulty, and, when using high-voltage pulse current that left and right magnetic shoe is magnetized, can damage electrical apparatus element, when pumping plant combination assembling, especially the pump case of pumping plant combination still needs to locate with anchor clamps, this will can cause the assembly accumulation error larger equally, and manufacturing efficiency is low.
The existing more another kind of electric fuel punp that is consisted of by end cap combination, stator combination, armature and pumping plant combination, it has adopted inside and outside two stator casings and two metal clipss in stator combination, two metal clipss place respectively between the two ends of the left and right magnetic shoe in the inner stator shell, utilize these two metal clipss to come the stretching magnetic shoe, the upper and lower end place of inner stator shell also is shaped with respectively a notch, during assembling, locate by the notch of inner stator shell upper and lower end of location to(for) end cap combination and pumping plant combination, and the external stator shell is for guaranteeing sealing.The shortcoming of this stator combined structure is the inner stator shell with the notch of upper and lower end in the stator combination, not only so that metal stamping volume riveting trouble but also be difficult to reach the cylindricity of high-precision inner stator shell, in addition, for the seal request that satisfies fuel pump and more than the external stator shell of the metal stretching of a high-precision requirement has been installed, thereby so that assembling difficulty further improves, simultaneously, also increase cost of production.
In sum, the structure of these three kinds of stator combination still exists such or such defective unavoidably, for this reason, the utmost point needs a kind of simple and easy and orientation type fast, it not only can be conducive to the assembly quality of product, and can also effectively enhance productivity, reducing product cost, this is problem to be solved by this invention just.
Summary of the invention
The objective of the invention is to provide a kind of electric fuel punp of novelty, it not only can be realized simple and easy in assembly process and locate fast, assembling is carried out smoothly, and effectively enhanced productivity, and reduces product cost.
The present invention is achieved in that electric fuel punp of the present invention comprises the end cap combination to achieve the above object, stator combination, armature and pumping plant combination, lower end in the outer end connecting cover of described end cap combination has brush holder, described stator combination includes stator casing, left side in the stator casing, right magnetic shoe, left, metal clips between right magnetic shoe one end, described armature is placed in the central authorities in the stator casing, the outer end of described pumping plant combination is the pump case of lower end Tapes pump cover, one end place of the bottom surface of the perisporium of the lower end brush holder in the outer end connecting cover of described end cap combination is extended with a brush holder boss downwards, left side in the stator casing of described stator combination, also be provided with a magnetic shoe dividing plate between the other end of right magnetic shoe, the center of the upper end end face of described magnetic shoe dividing plate be provided with one with the outer end connecting cover of described end cap combination in the magnetic shoe partition groove that matches to the brush holder boss of downward-extension of the end place of bottom surface of perisporium of lower end brush holder, the center of the lower end surface of described magnetic shoe dividing plate is extended with a magnetic shoe dividing plate boss downwards, described magnetic shoe dividing plate is left, the end, upper end of right both sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing respectively, described magnetic shoe dividing plate is left, right both sides upper, lower end is provided with a magnetic shoe dividing plate inner wing respectively, one end place of the upper end end face of the perisporium of the outer end pump case of described pumping plant combination is provided with a pump case groove that matches to the magnetic shoe dividing plate boss of downward-extension with described magnetic shoe dividing plate lower end surface center, left side in the stator casing of described stator combination, magnetic shoe dividing plate between the other end of right magnetic shoe is by its left side, the end, upper end of right both sides, magnetic shoe dividing plate outer wing and the left side at middle part and place, end, lower end, right both sides upper, the magnetic shoe dividing plate inner wing of lower end respectively with a left side, the other end of right magnetic shoe forms to embed to clamp and is connected and fixed, left side in the stator casing of described stator combination, one end of the bottom surface of the perisporium of the lower end brush holder in the magnetic shoe partition groove place at the end face middle part, magnetic shoe dividing plate upper end between the other end of right magnetic shoe and the outer end connecting cover of described end cap combination is connected and fixed the left side in the stator casing of described stator combination to the brush holder boss place formation interlocking of downward-extension, magnetic shoe dividing plate lower end surface center between the other end of right magnetic shoe forms interlocking to the pump case groove of an end of the upper end end face of the perisporium of the outer end pump case of the magnetic shoe dividing plate boss place of downward-extension and the combination of described pumping plant and is connected and fixed.
Because the present invention has improved existing electric fuel punp, and made up by end cap, stator combination, adopt a stator casing in the stator combination of the electric fuel punp that armature and pumping plant combination consist of, a metal clips, a magnetic shoe dividing plate, and the center that makes the upper end end face of described magnetic shoe dividing plate is provided with a magnetic shoe partition groove, the center of the lower end surface of described magnetic shoe dividing plate is extended with a magnetic shoe dividing plate boss downwards, described magnetic shoe dividing plate is left, the end, upper end of right both sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing respectively, described magnetic shoe dividing plate is left, right both sides upper, lower end is provided with a magnetic shoe dividing plate inner wing respectively, simultaneously, one end place of the bottom surface of the perisporium of the lower end brush holder in the outer end connecting cover of described end cap combination is extended with a brush holder boss downwards, and an end place of end face is provided with a pump case groove on the perisporium of the outer end pump case that described pumping plant makes up.
AndThe advantage of electric fuel punp of the present invention is as follows:
1. brush holder and magnetic shoe dividing plate injection molding process are all simple;
2. adopt magnetic shoe dividing plate inner wing and magnetic shoe dividing plate outer wing in the cross-over design of magnetic shoe dividing plate arranged on left and right sides, can make the more firmly the other end of the left and right magnetic shoe of clamping of intersection limit structure, and pin magnetic shoe;
3. adopt the stator combination of magnetic shoe baffle design, can operate separately stator combination when magnetizing, can not affect the performance of other electrical apparatus element (such as inductance, electric capacity etc.);
4. be equipped with stator combination of the present invention, and come the stretching magnetic shoe with a metal clips and a magnetic shoe dividing plate, and can utilize the magnetic shoe partition groove of magnetic shoe dividing plate upper end end face center and described magnetic shoe dividing plate lower end surface center to the magnetic shoe dividing plate boss of downward-extension, end cap combination and the pumping plant combination satisfied simultaneously electric fuel punp position, thus, both simplified assembly technology, be easy to again assembling, and also guaranteed assembly quality and greatly improved manufacturing efficiency.
Description of drawings
Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of electric fuel punp of the present invention.
Fig. 2 is the sectional drawing along A-A line among Fig. 1.
Fig. 3 is the schematic diagram of the end cap combination of electric fuel punp of the present invention.
Fig. 4 is the schematic diagram of the stator combination of electric fuel punp of the present invention.
Fig. 5 is the schematic diagram of the pumping plant combination of electric fuel punp of the present invention.
Fig. 6 is the schematic diagram of the magnetic shoe dividing plate in the stator combination of electric fuel punp of the present invention.
Fig. 7 is the schematic diagram of the rear side viewing of the magnetic shoe dividing plate in the stator combination of electric fuel punp of the present invention.
Embodiment
Below with reference to accompanying drawing electric fuel punp of the present invention is described in further detail.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the electric fuel punp of this invention includes end cap combination 1, stator combination 2, armature 9 and pumping plant combination 3.
Lower end in the outer end connecting cover of described end cap combination 1 has brush holder 4, and an end place of the bottom surface of the perisporium of the lower end brush holder 4 in the outer end connecting cover of described end cap combination 1 is extended with a brush holder boss 11 downwards.
Described stator combination 2 includes the magnetic shoe dividing plate 12 between metal clips 8 between left and right magnetic shoe 6,7 in the stator casing 5, stator casing 5, left and right magnetic shoe 6,7 the end, left and right magnetic shoe 6,7 the other end.
The center of the upper end end face of described magnetic shoe dividing plate 12 is provided with a magnetic shoe partition groove 13, one end place of the bottom surface of the perisporium of the lower end brush holder 4 in the outer end connecting cover of the magnetic shoe partition groove 13 of described magnetic shoe dividing plate 12 upper end end face center and described end cap combination 1 matches to the brush holder boss 11 of downward-extension, the center of the lower end surface of described magnetic shoe dividing plate 12 is extended with a magnetic shoe dividing plate boss 14 downwards, described magnetic shoe dividing plate 12 left sides, the end, upper end of right both sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing 15 respectively, 16,17,18,19,20, described magnetic shoe dividing plate 12 left sides, right both sides upper, lower end is provided with a magnetic shoe dividing plate inner wing 21 respectively, 22,23,24.
Described armature 9 is placed in the central authorities in the stator casing 5.
The outer end of described pumping plant combination 3 is the pump case 10 of lower end Tapes pump cover, one end place of the upper end end face of the perisporium of the outer end pump case 10 of described pumping plant combination 3 is provided with a pump case groove 25, and described pump case groove 25 matches with the magnetic shoe dividing plate boss 14 of described magnetic shoe dividing plate 12 lower end surface center to downward-extension.
Left side in the stator casing 5 of described stator combination 2, right magnetic shoe 6, magnetic shoe dividing plate 12 between 7 the other end is by its left side, the end, upper end of right both sides, the magnetic shoe dividing plate outer wing 15 at middle part and place, end, lower end, 16,17,18,19,20 and left, right both sides upper, the magnetic shoe dividing plate inner wing 21 of lower end, 22,23,24 respectively with a left side, right magnetic shoe 6,7 the other end forms to embed to clamp and is connected and fixed, left side in the stator casing 5 of described stator combination 2, right magnetic shoe 6, one end of the bottom surface of the perisporium of the lower end brush holder 4 in magnetic shoe partition groove 13 places at the end face middle part, magnetic shoe dividing plate 12 upper end between 7 the other end and the outer end connecting cover of described end cap combination 1 is connected and fixed the left side in the stator casing 5 of described stator combination 2 to the brush holder boss 11 places formation interlocking of downward-extension, right magnetic shoe 6, pump case groove 25 places to magnetic shoe dividing plate boss 14 places of downward-extension and an end of the upper end end face of the perisporium of the outer end pump case 10 of described pumping plant combination 3 at magnetic shoe dividing plate 12 lower end surfaces between 7 the other end middle part form to rabbet and are connected and fixed.
On the brush holder such as roller pump, gear pump or the vane pump of just simply feature of the present invention being transplanted to electric fuel punp, locate between the other end of left and right magnetic shoe and pump case on belong to equally protection category of the present invention.
Claims (1)
1. electric fuel punp, it comprises end cap combination (1), stator combination (2), armature (9) and pumping plant combination (3), lower end in the outer end connecting cover of described end cap combination (1) has brush holder (4), described stator combination (2) includes stator casing (5), left side in the stator casing (5), right magnetic shoe (6,7), left, right magnetic shoe (6,7) metal clips between the end (8), described armature (9) is placed in the central authorities in the stator casing (5), the outer end of described pumping plant combination (3) is the pump case (10) of lower end Tapes pump cover, an end place of bottom surface that it is characterized in that the perisporium of the lower end brush holder (4) in the outer end connecting cover of described end cap combination (1) is extended with a brush holder boss (11) downwards, left side in the stator casing (5) of described stator combination (2), right magnetic shoe (6,7) also be provided with a magnetic shoe dividing plate (12) between the other end, the center of the upper end end face of described magnetic shoe dividing plate (12) be provided with one with the outer end connecting cover of described end cap combination (1) in the magnetic shoe partition groove (13) that matches to the brush holder boss (11) of downward-extension of the end place of bottom surface of perisporium of lower end brush holder (4), the center of the lower end surface of described magnetic shoe dividing plate (12) is extended with a magnetic shoe dividing plate boss (14) downwards, described magnetic shoe dividing plate (a 12) left side, the end, upper end of right both sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing (15 respectively, 16,17,18,19,20), described magnetic shoe dividing plate (a 12) left side, right both sides upper, lower end is provided with a magnetic shoe dividing plate inner wing (21 respectively, 22,23,24), one end place of the upper end end face of the perisporium of the outer end pump case (10) of described pumping plant combination (3) is provided with a pump case groove (25) that matches to the magnetic shoe dividing plate boss (14) of downward-extension with described magnetic shoe dividing plate (12) lower end surface center, left side in the stator casing (5) of described stator combination (2), right magnetic shoe (6,7) the magnetic shoe dividing plate (12) between the other end is by its left side, the end, upper end of right both sides, the magnetic shoe dividing plate outer wing (15 at middle part and place, end, lower end, 16,17,18,19,20) and left, right both sides upper, the magnetic shoe dividing plate inner wing (21 of lower end, 22,23,24) respectively with a left side, right magnetic shoe (6,7) the other end forms to embed to clamp and is connected and fixed, left side in the stator casing (5) of described stator combination (2), right magnetic shoe (6, the end of bottom surface that the magnetic shoe partition groove (13) at end face middle part, magnetic shoe dividing plate (12) between the other end 7) upper end is located the perisporium of the lower end brush holder (4) in the outer end connecting cover with described end cap combination (1) is located to form interlocking to the brush holder boss (11) of downward-extension and is connected and fixed the left side in the stator casing (5) of described stator combination (2), right magnetic shoe (6,7) magnetic shoe dividing plate (12) lower end surface between the other end middle part is located to locate to form interlocking with the pump case groove (25) of upper end end face one end of the perisporium of the outer end pump case (10) of described pumping plant combination (3) to the magnetic shoe dividing plate boss (14) of downward-extension and is connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110220379.3A CN102913357B (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110220379.3A CN102913357B (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913357A true CN102913357A (en) | 2013-02-06 |
| CN102913357B CN102913357B (en) | 2014-06-11 |
Family
ID=47611885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110220379.3A Expired - Fee Related CN102913357B (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913357B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821566A (en) * | 2006-03-19 | 2006-08-23 | 曹宝军 | Electric fuel pump suitable for fuel containing alcohol |
| DE102006035354A1 (en) * | 2005-10-18 | 2007-04-19 | Denso Corp., Kariya | Brushless motor and fluid pump with a brushless motor |
| US20070122300A1 (en) * | 2005-11-29 | 2007-05-31 | Keihin Corporation | Electric fuel pump |
| CN201786505U (en) * | 2010-09-21 | 2011-04-06 | 重庆德格科技发展有限公司 | Integral brushless electric fuel injection pump |
| CN202203008U (en) * | 2011-08-03 | 2012-04-25 | 上海柱信汽车电子燃油系统有限公司 | Electric fuel pump |
-
2011
- 2011-08-03 CN CN201110220379.3A patent/CN102913357B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006035354A1 (en) * | 2005-10-18 | 2007-04-19 | Denso Corp., Kariya | Brushless motor and fluid pump with a brushless motor |
| US20070122300A1 (en) * | 2005-11-29 | 2007-05-31 | Keihin Corporation | Electric fuel pump |
| CN1821566A (en) * | 2006-03-19 | 2006-08-23 | 曹宝军 | Electric fuel pump suitable for fuel containing alcohol |
| CN201786505U (en) * | 2010-09-21 | 2011-04-06 | 重庆德格科技发展有限公司 | Integral brushless electric fuel injection pump |
| CN202203008U (en) * | 2011-08-03 | 2012-04-25 | 上海柱信汽车电子燃油系统有限公司 | Electric fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102913357B (en) | 2014-06-11 |
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Granted publication date: 20140611 Termination date: 20180803 |