CN202203008U - Electric fuel pump - Google Patents
Electric fuel pump Download PDFInfo
- Publication number
- CN202203008U CN202203008U CN2011202790779U CN201120279077U CN202203008U CN 202203008 U CN202203008 U CN 202203008U CN 2011202790779 U CN2011202790779 U CN 2011202790779U CN 201120279077 U CN201120279077 U CN 201120279077U CN 202203008 U CN202203008 U CN 202203008U
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- China
- Prior art keywords
- magnetic shoe
- dividing plate
- combination
- stator
- brush holder
- 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.)
- Withdrawn - After Issue
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Abstract
An electric fuel pump is disclosed, which comprises an end cover assembly, a stator assembly, an armature and a pump station assembly, wherein a brush carrier is arranged at the lower end of the end cover assembly; the stator assembly comprises a stator housing, left and right magnetic shoes in the stator housing, and a metal elastic piece between the first ends of the left and right magnetic shoes, wherein the armature is mounted at the center in the stator housing; and the outer end of the pump station assembly is a pump housing with a pump cover at the lower end thereof, and wherein a brush carrier lug boss extends downwards from one end of the bottom surface of the peripheral wall of the brush carrier; a magnetic shoe separator is further arranged between the other ends of the left and right magnetic shoes; a magnetic shoe separator groove is formed at the middle part of the upper end face of the magnetic shoe separator; a magnetic shoe separator lug boss extends downwards from the middle part of the lower end face of the magnetic shoe separator; outside magnetic shoe separator wings are arranged at the upper end parts, the middle parts and the lower end parts of the left and right sides of the magnetic shoe separator, respectively; inside magnetic shoe separator wings are arranged at the upper end parts and the lower end parts of the left and right sides of the magnetic shoe separator, respectively; and a pump housing groove is formed at one end of the upper end face of the periphery wall of the pump housing. The electric fuel pump is suitable for the electronic control fuel injection systems of automobiles.
Description
Technical field
The utility model relates to a kind of fuel pump, particularly relates to a kind of electric fuel punp.
Background technique
The effect of electric fuel punp is with fuel pressurization, and pumps into oil supply pipeline continuously, supplies with the enough and fuel oil that have certain pressure of oil-fired system.Electric fuel punp is made up of end cap combination, stator combination, armature and pumping plant combination usually; The motor portion of electric fuel punp comprises permanent magnet that is fixed on the shell and the armature that produces electromagnetic torque and is installed in the brushgear in the end cap combination; The permanent magnet motor energising promptly drives pump housing rotation, fuel oil is sucked the electric fuel punp inside of flowing through from filler opening; Extrude from oil outlet again, to the oil-fired system fuel feeding.
For guaranteeing the proper functioning 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 combines the flatness error on plane overproof with lower shell body, will cause gas leakage, oil impregnate, influence 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 influences assembly quality.
Existing a kind of electric fuel punp that is made up of end cap combination, stator combination, armature and pumping plant combination, it adopts two metal clipss, a stator casing in stator combination.Be to use two metal clipss to come the stretching magnetic shoe in this stator combined structure, stator casing because to satisfy fuel pump seal request can not open locating notch, can only realize through anchor clamps one by one for end cap combination and the location that pumping plant makes up.The shortcoming of this stator combined structure is that assembly fixture is complicated, and the assembly accumulation error is bigger, and manufacturing efficiency is low.
The electric fuel punp that existing another kind is made up 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 use the long baffle plate that stretches out on the brush holder of end cap combination to come the stretching magnetic shoe, utilize the long baffle plate that stretches out on the brush holder of end cap combination to realize the location that end cap makes up simultaneously.The shortcoming of this structure is that the long baffle plate that stretches out on the brush holder of end cap combination makes the part molding and forming difficult;, assembling stator need load onto the end cap combination of electrical apparatus element such as having inductance, electric capacity when making up earlier; 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 the pumping plant combine and assemble; Especially the pump case of pumping plant combination still need use anchor clamps to locate, and this will can cause the assembly accumulation error bigger equally, and manufacturing efficiency is low.
The existing another kind of again electric fuel punp that is constituted 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 on a notch respectively, during assembling; Locate through 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 of the notch that has upper and lower end in the stator combination; Not only made 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 make assembling difficulty further improve; Simultaneously, also increase cost of production.
In sum; The structure of these three kinds of stator combination still exists such or such defective unavoidably, and for this reason, the utmost point needs a kind of simple and easy and orientation type fast; It not only can help the assembly quality of product; And can also enhance productivity effectively, reducing product cost, this is the utility model problem to be solved just.
Summary of the invention
The purpose of the utility model is the electric fuel punp that a kind of novelty will be provided, and it not only can be realized simple and easy in assembly process and locate fast, assembling is carried out smoothly, and can also be enhanced productivity effectively, reduces product cost.
Be achieved in that in order to reach above-mentioned purpose the utility model the electric fuel punp of the utility model comprises end cap combination, stator combination, armature and pumping plant combination; Lower end in the outer end connection cover of described end cap combination has brush holder; Described stator combination includes the left and right magnetic shoe in stator casing, the stator casing, the metal clips between left and 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 band pump cover; One end place of the bottom surface of the perisporium of the lower end brush holder in the outer end connection cover of described end cap combination is extended with a brush holder boss downwards; Also be provided with a magnetic shoe dividing plate between the other end of the left and right magnetic shoe in the stator casing of described stator combination; The center of the upper end end face of described magnetic shoe dividing plate be provided with one with the outer end connection cover of described end cap combination in the magnetic shoe partition groove that matches to the brush holder boss that extends below 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; The end, upper end of described magnetic shoe dividing plate and arranged on left and right sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing respectively; The place, upper and lower end of described magnetic shoe dividing plate and arranged on left and right sides 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 that extends below with described magnetic shoe dividing plate lower end surface center; The magnetic shoe dividing plate inner wing at the place, upper and lower end of magnetic shoe dividing plate outer wing and the and arranged on left and right sides of the magnetic shoe dividing plate between the other end of the left and right magnetic shoe in the stator casing of described stator combination by end, upper end, middle part and the place, end, lower end of its and arranged on left and right sides forms to embed to clamp with the other end of left and right magnetic shoe respectively and is connected and fixed; One end of the bottom surface of the perisporium of the lower end brush holder that the magnetic shoe partition groove place at the end face middle part, magnetic shoe dividing plate upper end between the other end of the left and right magnetic shoe in the stator casing of described stator combination and the outer end connection cover of described end cap combination are interior forms interlocking to the brush holder boss place that extends below and is connected and fixed, and the magnetic shoe dividing plate lower end surface center between the other end of the left and right magnetic shoe in the stator casing of described stator combination is connected and fixed to the pump case groove formation interlocking of an end of the upper end end face of the perisporium of the outer end pump case of magnetic shoe dividing plate boss place that extends below and the combination of described pumping plant.
Because the utility model has improved existing electric fuel punp; And in the stator combination of the electric fuel punp that is constituted by end cap combination, stator combination, armature and pumping plant combination, adopt a stator casing, 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; The end, upper end of described magnetic shoe dividing plate and arranged on left and right sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing respectively; The place, upper and lower end of described magnetic shoe dividing plate and arranged on left and right sides is provided with a magnetic shoe dividing plate inner wing respectively; Simultaneously, an 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, is provided with a pump case groove at an end place of the upper end end face of the perisporium of the outer end pump case of described pumping plant combination.
The advantage of the electric fuel punp of the utility model is following:
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 cross-over design, can make the intersection limit structure the other end of the left and right magnetic shoe of clamping more firmly, and pin magnetic shoe in magnetic shoe dividing plate and arranged on left and right sides;
3. adopt the stator combination of magnetic shoe baffle design, can operate separately stator combination when magnetizing, can not influence the performance of other electrical apparatus element (like inductance, electric capacity etc.);
4. be equipped with the stator combination of the utility model; And use a metal clips and a magnetic shoe dividing plate to come the stretching magnetic shoe, and magnetic shoe partition groove and the described magnetic shoe dividing plate lower end surface center that can utilize magnetic shoe dividing plate upper end end face center be to the magnetic shoe dividing plate boss that extends below, satisfy the end cap combination of electric fuel punp made up with pumping plant positioning simultaneously; Thus; Both simplified assembly technology, be easy to assembling again, and also guaranteed assembly quality and improved manufacturing efficiency greatly.
Description of drawings
The concrete structure of the utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the electric fuel punp of the utility model.
Fig. 2 is the sectional drawing along A-A line among Fig. 1.
Fig. 3 is the schematic representation that the end cap of the electric fuel punp of the utility model makes up.
Fig. 4 is the schematic representation of stator combination of the electric fuel punp of the utility model.
Fig. 5 is the schematic representation that the pumping plant of the electric fuel punp of the utility model makes up.
Fig. 6 is the schematic representation of the magnetic shoe dividing plate in the stator combination of electric fuel punp of the utility model.
Fig. 7 is the schematic representation of the rear side viewing of the magnetic shoe dividing plate in the stator combination of electric fuel punp of the utility model.
Embodiment
Below will combine accompanying drawing that the electric fuel punp of the utility model is done further to describe in detail.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the electric fuel punp of this model utility 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 the other end of metal clips 8 between the end of left and right magnetic shoe 6,7 in the stator casing 5, stator casing 5, left and right magnetic shoe 6,7, left and right magnetic shoe 6,7.
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 that extends below; 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; The end, upper end of described magnetic shoe dividing plate 12 and arranged on left and right sides, middle part and place, end, lower end are provided with a magnetic shoe dividing plate outer wing 15,16,17,18,19,20 respectively, and the place, upper and lower end of described magnetic shoe dividing plate 12 and arranged on left and right sides is provided with a magnetic shoe dividing plate inner wing 21,22,23,24 respectively.
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 band 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 to the magnetic shoe dividing plate boss 14 that extends below with described magnetic shoe dividing plate 12 lower end surface center.
The magnetic shoe dividing plate inner wing 21,22,23,24 at the place, upper and lower end of magnetic shoe dividing plate outer wing 15,16,17,18,19,20 and the and arranged on left and right sides of the magnetic shoe dividing plate 12 between the other end of the left and right magnetic shoe 6,7 in the stator casing 5 of described stator combination 2 through end, upper end, middle part and the place, end, lower end of its and arranged on left and right sides forms to embed to clamp with the other end of left and right magnetic shoe 6,7 respectively and is connected and fixed; 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 faces middle part, magnetic shoe dividing plate 12 upper end between the other end of the left and right magnetic shoe 6,7 in the stator casing 5 of described stator combination 2 and the outer end connecting cover of described end cap combination 1 forms interlocking to brush holder boss 11 places that extend below and is connected and fixed, and rabbeting with the pump case groove 25 places formation of an end of the upper end end face of the perisporium of the outer end pump case 10 of described pumping plant combination 3 to magnetic shoe dividing plate boss 14 places that extend below of the magnetic shoe dividing plate 12 lower end surfaces middle part between the other end of the left and right magnetic shoe 6,7 in the stator casing 5 of described stator combination 2 is connected and fixed.
As just simply with the characteristic of the utility model be transplanted on the brush holder of roller pump, gear pump or vane pump of electric fuel punp, locate between the other end of left and right magnetic shoe and pump case on belong to the protection category of the utility model equally.
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 connection 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); A left side; 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 band 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 connection 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 connection cover of described end cap combination (1) in the magnetic shoe partition groove (13) that matches to the brush holder boss (11) that extends below 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; On the right both sides; 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) that extends below 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 a left side; On the right both sides; 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 connection cover with described end cap combination (1) is located to form interlocking to the brush holder boss (11) that extends below 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 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) that extends below and is connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202790779U CN202203008U (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202790779U CN202203008U (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203008U true CN202203008U (en) | 2012-04-25 |
Family
ID=45967131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202790779U Withdrawn - After Issue CN202203008U (en) | 2011-08-03 | 2011-08-03 | Electric fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913357A (en) * | 2011-08-03 | 2013-02-06 | 上海柱信汽车电子燃油系统有限公司 | Electric fuel pump |
-
2011
- 2011-08-03 CN CN2011202790779U patent/CN202203008U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913357A (en) * | 2011-08-03 | 2013-02-06 | 上海柱信汽车电子燃油系统有限公司 | Electric fuel pump |
| CN102913357B (en) * | 2011-08-03 | 2014-06-11 | 上海柱信汽车电子燃油系统有限公司 | Electric fuel pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120425 Effective date of abandoning: 20140611 |
|
| RGAV | Abandon patent right to avoid regrant |