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CN1288104A - Electric fuel pump - Google Patents

Electric fuel pump Download PDF

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Publication number
CN1288104A
CN1288104A CN00129237A CN00129237A CN1288104A CN 1288104 A CN1288104 A CN 1288104A CN 00129237 A CN00129237 A CN 00129237A CN 00129237 A CN00129237 A CN 00129237A CN 1288104 A CN1288104 A CN 1288104A
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CN
China
Prior art keywords
fuel pump
electric fuel
housing
contact
socket
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.)
Pending
Application number
CN00129237A
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Chinese (zh)
Inventor
G·P·巴利尔
D·施米德尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN1288104A publication Critical patent/CN1288104A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/40—Structural association with grounding devices
    • 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
    • F02M2037/082—Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

本发明涉及一种电动燃料泵(10),具有一个接线盖(11)和一个与所述接线盖(11)相连的外壳(12)。一个与车载电路地线相连的接线插座触片(22)位于接线盖(11)内,并与一个弧形连接元件(43)相连,后者插在外壳(12)内的一个磁铁固定件(40)内。经接触面(41)贴在外壳(12)上的磁铁固定件(40)具有一个整体相连的插接套(50),它可将连接元件(43)的端头(48)夹紧。本发明所述电动燃料泵(10)至所述外壳(12)的接地连接不仅可靠,而且装配开销低。

Figure 00129237

The invention relates to an electric fuel pump (10), which has a wiring cover (11) and a casing (12) connected to the wiring cover (11). A terminal socket contact piece (22) connected to the ground wire of the vehicle circuit is located in the terminal cover (11) and connected to an arc-shaped connection element (43), which is inserted into a magnet holder ( 40) within. The magnet fixing part (40) attached to the housing (12) via the contact surface (41) has an integrally connected plug sleeve (50), which can clamp the end (48) of the connecting element (43). The ground connection of the electric fuel pump (10) to the casing (12) of the present invention is not only reliable, but also has low assembly costs.

Figure 00129237

Description

电动燃料泵electric fuel pump

本发明涉及一种如权利要求1前序部分所述并公开在德国实用新型DE-GM9200625中的电动燃料泵。这种电动燃料泵具有一个外壳和一个与所述外壳相连的接线盖，其中的接线盖具有一个地线接点，它经一个连接元件与所述外壳的内壁实现电接触。公知的电动燃料泵具有一个电刷形状的连接元件，它与电动燃料泵的一个地线接点相连。此外电刷在外壳内壁上有一段对应的弯曲，所以能将外壳的地线接点与电动燃料泵的地线接点相连。这种结构的缺点是，外壳和电动燃料泵的零件必须采用专有结构，以便为外壳壁上的电刷结构提供相应的自由空间。此外，所述连接元件只能以很小的面积与外壳接触，所以在某些情况下，电动燃料泵的驱动电机不能达到足够的去干扰特性。The present invention relates to an electric fuel pump as stated in the preamble of claim 1 and disclosed in the German utility model DE-GM9200625. The electric fuel pump has a housing and a terminal cover connected to the housing, wherein the terminal cover has a ground contact, which is in electrical contact with the inner wall of the housing via a connection element. Known electric fuel pumps have a brush-shaped connecting element, which is connected to a ground connection of the electric fuel pump. In addition, the brush has a corresponding bend on the inner wall of the housing, so that the ground connection of the housing can be connected to the ground connection of the electric fuel pump. The disadvantage of this construction is that the housing and parts of the electric fuel pump have to be constructed in a proprietary way in order to provide corresponding free space for the brush structures on the housing wall. Furthermore, the connecting element can only be in contact with the housing over a small area, so that in some cases the drive motor of the electric fuel pump cannot achieve sufficient interference-canceling properties.

本发明的方案是，所述连接元件以异形连接方式插接在一个接触元件内，该接触元件与所述外壳的内壁之间存在有效连接。The solution of the present invention is that the connection element is plugged into a contact element in a special-shaped connection manner, and there is an effective connection between the contact element and the inner wall of the housing.

所述接触元件是一个磁铁固定件，具有一个至少部分地贴在所述外壳内壁上的接触面，而且所述磁铁固定件具有一个可将所述连接元件部分包围的、起夹紧作用的插口。The contact element is a magnet mount with a contact surface at least partially abutting against the inner wall of the housing, and the magnet mount has a clamping receptacle that partially surrounds the connection element .

所述磁铁固定件用薄板制成，而且所述插口与磁铁固定件采用变形工艺制成一个整体。The magnet fixing part is made of a thin plate, and the socket and the magnet fixing part are made into a whole by deformation process.

所述插口在位于外壳内壁对面的一侧有接触面，而且其结束位置在所述接线盖的对面，大致与磁铁固定件的端面平齐。The socket has a contact surface on the side opposite to the inner wall of the housing, and its end position is opposite to the wiring cover, roughly flush with the end surface of the magnet holder.

所述连接元件是一个弧形导线。The connecting element is an arc-shaped wire.

根据本发明，具有权利要求1特征部分所述结构的电动燃料泵的优点是，其连接元件和外壳之间的地线连接的接触面较大，而且可靠。该连接是在接线盖与外壳的装配工艺中建立的。According to the invention, an electric fuel pump having the structure described in the characterizing part of claim 1 has the advantage that the ground connection between the connection element and the housing has a large and reliable contact surface. This connection is made during the assembly process of the terminal cover and the housing.

本发明所述电动燃料泵的进一步改进体现在从属权利要求中。Further developments of the electric fuel pump according to the invention are presented in the dependent claims.

特别有利的是，所述接触元件是一个磁铁固定件，因为其结构可保证有一个接触面贴在内壁上。此外与所述连接元件接触的插口以相对简单的方式集成在磁铁固定件内。一种制造插口的特别简单的方式是，所述插口是磁铁固定件的组成部分，而且与后者连成一体。It is particularly advantageous if the contact element is a magnet mount, since its design ensures that a contact surface rests on the inner wall. Furthermore, the receptacle which makes contact with the connecting element is integrated in the magnet holder in a relatively simple manner. A particularly simple way of producing the socket is that the socket is a component part of the magnet holder and is integrally connected with the latter.

下面对照附图所示实施例对本发明作进一步的说明。The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

图1表示电动燃料泵的局部纵向剖视图，Figure 1 shows a partial longitudinal sectional view of an electric fuel pump,

图2表示图1所示电动燃料泵在外壳/地线接触部分的截面剖视图。FIG. 2 shows a cross-sectional view of the electric fuel pump shown in FIG. 1 at the housing/ground contact portion.

在图1中，电动燃料泵用标号10表示，它是机动车燃料喷射系统的一个组成部分。该电动燃料泵10具有一个接线盖11，它与基本上为圆筒形的外壳12密封连接。该密封连接是通过位于外壳边缘13对面的接线盖11插在外壳12内实现的，而且通过接线盖连接段16上的斜面14卷边固定。In FIG. 1, the electric fuel pump is indicated by reference numeral 10, which is an integral part of the fuel injection system of the motor vehicle. The electric fuel pump 10 has a connection cover 11 which is tightly connected to a substantially cylindrical housing 12 . The sealed connection is realized by inserting the wiring cover 11 opposite the edge 13 of the casing into the casing 12 , and is fixed by crimping the inclined surface 14 on the connection section 16 of the wiring cover.

优选采用塑料通过注射工艺制造的接线盖11具有—个压力管17，里面集成有一个止回阀18，通过该阀，处在压力下并沿所述电动燃料泵10的纵向流动的燃料被送出。平行于压力管是一个接线插座19，用于外壳12内的电枢20在接线盖11内的电接触。在接线插座19内有接线插座触片22，它穿过接线盖11，在图1中仅可以看到一个接线插座触片22，它与机动车电路上的地线相连。所述接线插座触片22的一个弧形段23通过一根未画出的导线与电枢绕组实现电连接。该弧形段23靠在一个支座和轴承座25上，后者有一个孔26用于容纳电枢轴28的滑动轴承27。此外所述支座和轴承座25还有一个对准压力管17的通孔29，用于流通燃料，以及一个法兰形状的支承面31，它位于外壳12的凸肩32和接线盖11的一个端面之间，所以可保证接线盖11在外壳12上具有正确的轴向位置。The terminal cover 11, which is preferably manufactured from plastic by injection, has a pressure line 17 in which a non-return valve 18 is integrated, through which the fuel under pressure and flowing in the longitudinal direction of the electric fuel pump 10 is sent out . Parallel to the pressure tube is a terminal socket 19 for electrical contacting of the armature 20 in the housing 12 in the terminal cover 11 . In the terminal socket 19 there is a terminal socket contact piece 22, which passes through the terminal cover 11, and only one terminal socket contact piece 22 can be seen in FIG. 1, which is connected to the ground wire on the motor vehicle circuit. An arc segment 23 of the terminal socket contact piece 22 is electrically connected to the armature winding through an unillustrated wire. This arcuate section 23 rests on a support and bearing housing 25 which has a bore 26 for receiving a slide bearing 27 of an armature shaft 28 . In addition, the support and bearing housing 25 also has a through hole 29 aligned with the pressure pipe 17 for the passage of fuel, and a flange-shaped support surface 31, which is located between the shoulder 32 of the housing 12 and the connection cover 11. Between one end face, it can ensure that the wiring cover 11 has a correct axial position on the housing 12 .

在电枢20的圆柱形中间段34的高度上，在外壳12的内壁35上设置了一个条形磁铁36(图2)。该磁铁36的截面分别有两个相互平行的较宽的侧面37，在其相对的接触面上有两个较窄的侧面38，它们具有与外壳12的直径相匹配的半径，而且具有相应的斜面。为固定磁铁36的位置，在外壳12的内壁35上设置了一个磁铁固定件40。At the height of the cylindrical middle section 34 of the armature 20, a bar magnet 36 is arranged on the inner wall 35 of the housing 12 (FIG. 2). The cross-section of the magnet 36 has two mutually parallel wider sides 37 and two narrower sides 38 on its opposite contact surface, which have a radius matched to the diameter of the housing 12 and have corresponding inclined plane. To fix the position of the magnet 36 , a magnet holder 40 is provided on the inner wall 35 of the housing 12 .

在冲压/变形工艺中，用薄板制成的磁铁固定件40紧贴在内壁35上的弯曲状接触面41上，以及两个作用有预应力的折角形斜边42，它们分别靠在磁铁36的窄侧面38上，在其预应力的作用下，磁铁36被径向固定在外壳12的内壁35上。During the stamping/forming process, the magnet holder 40 made of sheet metal rests against the curved contact surface 41 on the inner wall 35 and the two prestressed angled bevels 42 which respectively rest against the magnet 36 On the narrow side 38 of the magnet 36 is fixed radially on the inner wall 35 of the housing 12 under the action of its prestress.

以上所述电动燃料泵10及其功能均是公知的。本发明的本质性改进在于外壳12与地线或相应的接线插座触片22之间的特殊接触结构。为此，所述电动燃料泵10具有一个弧形连接元件43，它有—个平行于电动燃料泵10的纵轴线44延伸的引入段45和一个垂直并弯折的接触段46。弧形导线形状的连接元件43具有矩形截面，并用一个相应长度的导线条按照其形状弯曲制成。所述连接元件43的接触段46与接地的接线插座触片22实现电接触。接触段46的位于电枢20对面的端部47从接线盖11中伸出，并在外壳12内的磁铁固定件40的高度上插到该磁铁固定件40内。插在磁铁固定件40内并与其相连的接触段46的端头48，其截面有少许缩小，而且在其前端有插入斜面49。端头48与磁铁固定件40的连接是通过一个插接套50实现的。该插接套是由磁铁固定件40的分段51形成的，它是在接触面41上局部冲压形成的，而且被变形或弯曲成插接套50。该插接套50是磁铁固定件40的一部分，而且与后者连成一体。该插接套50构成了连接元件43的端头48的插口52，并将后者夹紧。The electric fuel pump 10 described above and its functions are well known. The essential improvement of the present invention resides in the special contact configuration between the housing 12 and the ground wire or the corresponding socket contact 22 . For this purpose, the electric fuel pump 10 has an arc-shaped connecting element 43 with an insertion section 45 running parallel to the longitudinal axis 44 of the electric fuel pump 10 and a vertical and angled contact section 46 . The connecting element 43 in the shape of an arc wire has a rectangular cross-section and is made by bending a wire strip of corresponding length according to its shape. The contact section 46 of the connecting element 43 makes electrical contact with the grounded terminal socket contact 22 . An end 47 of the contact section 46 facing the armature 20 protrudes from the connection cover 11 and is inserted into the magnet holder 40 in the housing 12 at the level of the magnet holder 40 . The end 48 of the contact section 46 which is inserted into the magnet holder 40 and connected thereto has a slightly reduced section and has an insertion slope 49 at its front end. The connection between the terminal 48 and the magnet holder 40 is realized through a socket 50 . The socket is formed by a segment 51 of the magnet holder 40 which is partially stamped on the contact surface 41 and is deformed or bent into the socket 50 . The plug socket 50 is a part of the magnet holder 40 and is integrated with the latter. The socket 50 forms the socket 52 of the head 48 of the connection element 43 and clamps the latter.

电动燃料泵10是在一个装配设备上装配的，装配时将接线盖11沿共同的纵轴线44插到外壳12上，并且将接触段46对准插接套50，将接线盖11推到外壳12上。此时连接元件43的端头48将插到插接套50的插口52内，并且与后者实现电接触，直到接线盖11靠在支座和轴承座25的支承面31上。然后将外壳12与接线盖11卷边固定。通过连接元件43和磁铁固定件40的特殊结构，装配电动燃料泵10时无需额外的装配开销，即可将接地接线插座触片22经连接元件43和插接套50与磁铁固定件40的接触面41连接，从而在外壳12的内壁35上可靠地实现大面积接触连接。The electric fuel pump 10 is assembled on an assembly device. During assembly, the terminal cover 11 is inserted into the housing 12 along the common longitudinal axis 44, and the contact section 46 is aligned with the socket 50, and the terminal cover 11 is pushed to the housing. 12 on. The end 48 of the connection element 43 will now be inserted into the socket 52 of the socket 50 and will be in electrical contact with the latter until the terminal cover 11 abuts against the supporting surface 31 of the support and the bearing housing 25 . Then the shell 12 and the wiring cover 11 are crimped and fixed. Through the special structure of the connection element 43 and the magnet holder 40 , when assembling the electric fuel pump 10 , the contact piece 22 of the ground terminal socket can be contacted with the magnet holder 40 through the connection element 43 and the socket sleeve 50 without additional assembly costs. The surface 41 is connected, so that a large-area contact connection is reliably realized on the inner wall 35 of the housing 12 .

Claims (5)

1、电动燃料泵(10)，具有一个外壳(12)和一个与所述外壳(12)相连的接线盖(11)，其中的接线盖(11)具有一个地线接点(22)，它经一个连接元件(43)与所述外壳(12)的内壁(35)实现电接触，本发明的特征是，所述连接元件(43)以异形连接方式插接在一个接触元件(40)内，该接触元件与所述外壳(12)的内壁(35)之间存在有效连接。1. The electric fuel pump (10) has a housing (12) and a wiring cover (11) connected to the housing (12), wherein the wiring cover (11) has a ground wire contact (22), which is passed through A connection element (43) realizes electrical contact with the inner wall (35) of the housing (12), and the feature of the present invention is that the connection element (43) is plugged into a contact element (40) in a special-shaped connection mode, There is an operative connection between the contact element and the inner wall (35) of said housing (12). 2、如权利要求1所述的电动燃料泵，其特征是，所述接触元件是一个磁铁固定件(40)，具有一个至少部分地贴在所述外壳(12)的内壁(35)上的接触面(41)，而且所述磁铁固定件(40)具有一个可将所述连接元件(43)部分包围的、起夹紧作用的插口(50)。2. The electric fuel pump according to claim 1, characterized in that said contact element is a magnet mount (40) having a contact at least partially attached to the inner wall (35) of said casing (12) The contact surface (41), and the magnet fixing part (40) has a socket (50) that can partially surround the connecting element (43) and play a clamping role. 3、如权利要求2所述的电动燃料泵，其特征是，所述磁铁固定件(40)用薄板制成，而且所述插口(50)与磁铁固定件(40)采用变形工艺制成一个整体。3. The electric fuel pump according to claim 2, characterized in that, the magnet fixing part (40) is made of a thin plate, and the socket (50) and the magnet fixing part (40) are made into one by deformation process. overall. 4、如权利要求2或3所述的电动燃料泵，其特征是，所述插口(50)在位于外壳(12)的内壁(35)对面的一侧有接触面(41)，而且其结束位置在所述接线盖(11)的对面，大致与磁铁固定件(40)的端面平齐。4. The electric fuel pump according to claim 2 or 3, characterized in that the socket (50) has a contact surface (41) on the side opposite to the inner wall (35) of the casing (12), and its end The position is on the opposite side of the wiring cover (11), roughly flush with the end face of the magnet fixing piece (40). 5、如权利要求1-4中任何一项所述的电动燃料泵，其特征是，所述连接元件是一个弧形导线(43)。5. The electric fuel pump according to any one of claims 1-4, characterized in that said connecting element is an arc-shaped wire (43).
CN00129237A 1999-09-14 2000-09-14 Electric fuel pump Pending CN1288104A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19943959A DE19943959A1 (en) 1999-09-14 1999-09-14 Electric fuel pump has connecting element which engages in receptacle of magnet holder to form earth connection with wall of housing shell
DE19943959.1 1999-09-14

Publications (1)

Publication Number Publication Date
CN1288104A true CN1288104A (en) 2001-03-21

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ID=7921946

Family Applications (1)

Application Number Title Priority Date Filing Date
CN00129237A Pending CN1288104A (en) 1999-09-14 2000-09-14 Electric fuel pump

Country Status (4)

Country Link
JP (1) JP2001115917A (en)
CN (1) CN1288104A (en)
DE (1) DE19943959A1 (en)
FR (1) FR2798529A1 (en)

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CN100347435C (en) * 2002-03-27 2007-11-07 西门子公司 Connector piece for a fuel pump
CN105874686A (en) * 2014-01-03 2016-08-17 卡特燃料系统有限公司 Grounding device for brushless motors
CN109563797A (en) * 2016-07-26 2019-04-02 株式会社京浜 Fuel pump components

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DE102011012457A1 (en) 2011-02-25 2012-08-30 Hoffmann & Co. Elektrokohle Ag Brush assembly for an electric fuel pump for conveying electrically conductive fuels
JP6239393B2 (en) 2014-01-27 2017-11-29 愛三工業株式会社 Fuel pump
DE102021107317A1 (en) 2021-03-24 2022-09-29 Nidec Motors & Actuators (Germany) Gmbh Motor assembly with sealed housing cover

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100347435C (en) * 2002-03-27 2007-11-07 西门子公司 Connector piece for a fuel pump
CN105874686A (en) * 2014-01-03 2016-08-17 卡特燃料系统有限公司 Grounding device for brushless motors
CN105874686B (en) * 2014-01-03 2018-11-16 卡特燃料系统有限公司 Grounding device for brushless motors
CN109563797A (en) * 2016-07-26 2019-04-02 株式会社京浜 Fuel pump components
CN109563797B (en) * 2016-07-26 2021-02-12 株式会社京浜 Fuel pump assembly

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JP2001115917A (en) 2001-04-27
DE19943959A1 (en) 2001-03-15
FR2798529A1 (en) 2001-03-16

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