WO2017187493A1 - スタータ用電磁スイッチ装置 - Google Patents
スタータ用電磁スイッチ装置 Download PDFInfo
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- WO2017187493A1 WO2017187493A1 PCT/JP2016/062966 JP2016062966W WO2017187493A1 WO 2017187493 A1 WO2017187493 A1 WO 2017187493A1 JP 2016062966 W JP2016062966 W JP 2016062966W WO 2017187493 A1 WO2017187493 A1 WO 2017187493A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/026—Details concerning isolation between driving and switching circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H2050/049—Assembling or mounting multiple relays in one common housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
- H01H50/443—Connections to coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
- H01H50/543—Auxiliary switch inserting resistor during closure of contactor
Definitions
- the present invention relates to a starter electromagnetic switch device used for a starter for starting an engine mounted on, for example, an automobile.
- the starter electromagnetic switch device has a function of engaging a starter pinion with a ring gear and a function of opening and closing a motor main electric circuit.
- the starter electromagnetic switch device has a suction coil and a holding coil in order to generate these two functions.
- One end of the suction coil is connected to the motor main electric circuit.
- the magnitude and temporal change of the current flowing through the suction coil affect the two functions, the timing at which the motor starts rotating, and the angular acceleration of the motor. Because of this interaction, it is difficult to optimize all four functions in the design of the suction and holding coils.
- an electromagnetic switch device for a starter in which the suction coil is changed to an activation circuit and the holding coil is changed to a suction coil having suction and holding functions (for example, Patent Document 1).
- This starting circuit has a starting resistor and a starting circuit contact.
- the starting circuit contact exists in the same space (contact chamber) as the contact of the motor main circuit, and the starting circuit contact is close to the main fixed iron core that is body-grounded. Also, the screw for fixing the starting circuit contact and the main fixing iron core are close to each other. As a result, there is a drawback in that a leak path is generated between the starting circuit contact and the main fixed iron core due to contact wear powder of the main fixed contact, the main movable contact, and the starting circuit contact, and a leakage current flows.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide an electromagnetic switch device for a starter which has a built-in start circuit and prevents leakage current due to contact wear powder.
- An electromagnetic switch device for a starter includes a pair of main fixed contacts constituting a main electric circuit of a motor, a pair of starting circuit contacts constituting a starting circuit of the motor, the pair of main fixed contacts, and the pair of It is movably arranged between the starting circuit contacts, opens and closes the main electric circuit of the motor by opening and closing between the pair of main fixed contacts, and opens and closes between the pair of starting circuit contacts.
- a main movable contact that opens and closes a starting circuit, a starting resistor that constitutes the starting circuit and through which a starting current of the motor flows, and a suction coil that generates a magnetic field for moving the main movable iron core in the direction of the pair of main fixed contacts
- a main fixed iron core constituting a magnetic circuit for generating a magnetic force by the magnetic field of the suction coil, and a contact chamber serving as a space in which the main fixed contact is fixed and the movable contact is movable.
- a terminal block a connector A constituting the starting resistor circuit and connected to the starting resistor and disposing one of the pair of starting circuit contacts at one end, and one of the pair of main fixed contacts constituting the starting resistor circuit
- a connector B which is disposed at one end of the pair of starting circuit contacts, an insulating member which electrically insulates the connector A and the connector B from the fixed iron core, and an elastic member which seals the contact chamber
- the connector A and the connector B are sandwiched between the terminal block and the fixed iron core via the insulating member and the elastic member.
- the connector A and the connector B are sandwiched between the terminal block and the main fixed iron core via the insulating member and the elastic member, so that the pair of starting circuit contacts are fixed. There is no need to use conductive members such as screws. Further, the contact chamber is separated into the main fixed contact side and the main fixed iron core side by the connector A, the connector B, the starting circuit contact, and the insulating member. Thereby, the abrasion powder generated from the main movable contact, the pair of main fixed contacts, and the pair of starting circuit contacts does not come into electrical contact with the main fixed iron core as the ground circuit. Therefore, a leak path does not occur between the pair of starting circuit contacts to which a voltage is applied when the starter electromagnetic switch device is operated, the connector A, the connector B, and the main fixed iron core as the ground circuit, and no leak current flows.
- FIG. 1 is a circuit diagram of an internal combustion engine starting device equipped with an electromagnetic switch device for a starter according to Embodiment 1 of the present invention. It is an external view of the electromagnetic switch device for starters concerning Embodiment 1 of the present invention. It is the top view which looked at the electromagnetic switch apparatus for starters of FIG. 2 from the top.
- FIG. 4 is a cross-sectional view of the starter electromagnetic switch device taken along line IV-IV in FIG. 2.
- FIG. 5 is a cross-sectional view of a main part around a contact chamber taken along line VV in FIG. 2.
- FIG. 3 is a cross-sectional view of a main part around a contact chamber taken along line VI-VI in FIG. 2.
- FIG. It is the perspective view which showed the connection state of the connector A in the electromagnetic switch apparatus for starters which concerns on Embodiment 1 of this invention, and the connector B.
- FIG. It is the perspective view which removed the insulating member from FIG. It is the perspective view which showed the connection state of the connector A and the connector B in the electromagnetic switch apparatus for starters which concerns on Embodiment 2 of this invention.
- FIG. It is the perspective view which showed the connection state of the connector A and connector B in the electromagnetic switch apparatus for starters which concerns on Embodiment 3 of this invention.
- It is the perspective view which removed the elastic member from FIG. It is principal part sectional drawing of the contact chamber periphery in the electromagnetic switch apparatus for starters which concerns on Embodiment 3 of this invention.
- the starter 1 includes an auxiliary relay 2, a starter electromagnetic switch device 3, and a motor 4.
- the starter 1 is a device that rotates an internal combustion engine that cannot be started by itself.
- the auxiliary relay 2 is a device for turning ON / OFF the operation of the starter electromagnetic switch device 3.
- the starter electromagnetic switch device 3 is a device that meshes the pinion of the starter 1 with the ring gear of the internal combustion engine and opens and closes the main electric circuit 7 of the motor 4.
- the motor 4 is a device that generates power for rotating the internal combustion engine.
- the starter 1 is operated by electric power from the battery 5. The operation is controlled by the key switch 6.
- the electric circuit of the starter 1 includes a main electric circuit 7 of the motor 4, a starting circuit 8, a suction holding circuit 9, and an auxiliary relay circuit 10, and the circuit excluding the motor 4 of the main electric circuit 7 is configured as the starter electromagnetic switch device 3. Is done.
- the main electric circuit 7 includes the motor 4 and the main fixed contact 18, and the starting circuit 8 includes the main movable contact 13, the starting circuit contact 14, the connector A 15, the connector B 16, and the starting resistor 20, and the suction holding circuit 9. Is provided with a suction coil 21.
- the connector A15 connects between the starting resistor 20 and one of the pair of starting circuit contacts 14.
- the connector B16 connects between the other of the pair of activation circuit contacts 14 and the pair of main fixed contacts 18 to which the motor 4 is connected.
- the terminal block 11 of the starter electromagnetic switch device 3 is made of an insulating material, and a part of the cylindrical shape protrudes in the radial direction, and there is an opening in the protruding part at one end in the cylindrical axis direction, and the auxiliary relay 2 is in the opening.
- a contact chamber 11a is provided at the other end on the opposite side.
- the contact chamber 11a is a space composed of an opening provided on the opposite side in the axial direction to the opening containing the auxiliary relay 2 and the main fixed iron core 12, and is a space in which the main movable contact 13 is movable.
- a pair of main fixed contacts 18 are installed on the bottom of the contact chamber 11a, and an activation circuit contact 14, a connector A15, a connector B16, and an insulating member 17 are installed on the opening side. These parts installed on the opening side separate the contact chamber 11a into a pair of main fixed contact side 11b and main fixed core side 11c (FIG. 4).
- the insulating member 17 is made of an insulating material such as synthetic resin, and the connector A15 and the connector B16 are integrally formed.
- the insulating member 17 is sandwiched between the terminal block 11 and the main fixed iron core 12, but chloroprene is used for the purpose of absorbing dimensional variations in manufacturing and for sealing the contact chamber 11a to prevent water from entering the contact chamber 11a. It is pressed and clamped between the terminal block 11 and the main fixed iron core 12 through an elastic member 19 such as rubber (FIG. 4).
- the position of the insulating member 17 is determined by the lead portions 22a, 22b, and 22c of the main winding frame 22 around which the starting resistor 20 and the suction coil 21 are wound (FIG. 7). In this state, the connector A15, one end of the starting resistor 20, the lead connector 23, the main fixed iron core 12, the lead connector 23, and one end of the suction coil 21 are welded (FIG. 8).
- the insulating member 17 is made of a material and shape that can receive a load when the main movable contact 13 collides and a load when the main movable contact 13 and the pair of starting circuit contacts 14 are peeled off.
- the elastic member 19 is made of a material and shape capable of generating a contact surface pressure for preventing flooding.
- the insulating member 17 and the elastic member 19 may be integrated parts formed by molding different materials (so-called two-color molding) in the same mold. Therefore, the connector A15 and the connector B16 are not limited to being integrally formed with either the insulating member 17 or the elastic member 19, and may be formed between the insulating member 17 and the elastic member 19.
- the main fixed iron core 12 is a magnetic material, and constitutes a magnetic circuit that generates a magnetic force by the magnetic field of the starting resistor 20 and the suction coil 21. It is also a ground circuit for the suction coil 21 and is electrically connected to the negative side of the battery 5.
- the main fixed iron core 12 is provided with a female screw 12a to fix the terminal block 11 with a screw 24 (FIG. 6).
- the starter 1 is an earth float type
- the main fixed iron core 12 does not serve as a ground circuit for the suction coil 21, and the suction coil 21 is configured to maintain the required spatial distance and creepage distance.
- the pair of starting circuit contacts 14 uses two parts of the same material and the same shape.
- the starting circuit contact 14 is made of a conductive material and has a hollow rivet shape.
- the head of the starting circuit contact 14 is a contact portion with the main movable contact 13, and the opposite side is hollow. By plastically deforming the hollow portion, one is fixed to the connector A15 and the other is fixed to the connector B16 (FIGS. 7 and 8).
- the connector A15 is a conductive material and connects between the starting resistor 20 and one of the pair of starting circuit contacts 14.
- the connector B16 is a conductive material and is connected to the other of the pair of start circuit contacts 14 and the pair of main fixed contacts 18 to which the motor 4 is connected.
- the lead connector 23 is made of a conductive material, one end is welded to the main fixed core 12, the other end is electrically joined to the subcoil 25, and the suction coil 21 is welded and fixed at the intermediate portion (FIGS. 7 and 8). By connecting in this way, one end of the suction coil 21 and one end of the auxiliary coil 25 are electrically connected to the negative side of the battery 5. If possible, the suction coil 21 may be welded directly to the main fixed iron core 12 or the secondary coil 25, and a configuration without using the lead connector 23 is also possible. When the starter 1 is an earth float type, the lead connector 23 and the main fixed iron core 12 are not welded, and are configured to maintain the required spatial distance and creepage distance.
- the starting resistor 20 is a conductive material.
- a material is selected from a steel material, a non-ferrous metal material, an electric resistance material, etc. so that the required electric resistance value and magnetic field strength are obtained, and the main winding frame 22 is wound as many times as necessary.
- One end of the starting resistor 20 is electrically connected to one of the pair of sub fixed contacts 28, and the other end is electrically connected to one of the pair of starting circuit contacts 14.
- the suction coil 21 is a conductive material and is wound around the main winding frame 22. One end of the suction coil 21 is electrically connected to one of the pair of sub fixed contacts 28, and the other end is electrically connected to the minus side of the battery 5.
- the secondary coil 25 is a conductive material and is wound around the secondary winding frame 26 (FIG. 5). One end of the sub coil 25 is electrically connected to the key switch 6, and the other end is electrically connected to the minus side of the battery 5.
- the main movable contact 13 starts to move in the direction of the pair of main fixed contacts 18 by the magnetic force between the starting resistor 20 and the suction coil 21.
- the pinion of the starter 1 starts to mesh with the ring gear of the internal combustion engine, and the motor 4 also starts to rotate gently with the current from the starting resistor 20.
- the main movable contact 13 starts to move, and the pair of starter circuit contacts 14 are separated before and after the timing at which the pinion of the starter 1 and the ring gear of the internal combustion engine complete the meshing operation. As a result, no current flows through the starting circuit 8, but the main movable contact 13 continues to move due to the magnetic force of the suction coil 21. Finally, the pair of main fixed contacts 18 are short-circuited by the main movable contact 13, and the electric power from the battery 5 is supplied to the motor 4 so that the motor 4 rotates at full power to rotate the internal combustion engine.
- the starter electromagnetic switch device includes: A pair of main fixed contacts 18 constituting the main electric circuit 7 of the motor 4; A pair of start circuit contacts 14 constituting the start circuit 8 of the motor 4; The main electric circuit 7 of the motor 4 is opened and closed by opening and closing the pair of main fixed contacts 18, which are movably disposed between the pair of main fixed contacts 18 and the pair of starting circuit contacts 14.
- a main movable contact 13 for opening and closing the start circuit 8 of the motor 4 by opening and closing between the pair of start circuit contacts 14;
- a starting resistor 20 which constitutes the starting circuit 8 and through which the starting current of the motor 4 flows
- An attraction coil 21 for generating a magnetic field for moving the main movable iron core in the direction of the pair of main fixed contacts;
- a main fixed iron core 12 constituting a magnetic circuit for generating a magnetic force by the magnetic field of the suction coil 21;
- a terminal block 11 having a contact chamber 11a in which a main fixed contact 18 is fixed and a main movable contact 13 is movable;
- a connector A15 that constitutes the starter circuit 8 and is connected to the starter resistor 20 and places one of the pair of starter circuit contacts 14 at one end;
- a connector B16 that constitutes the starting circuit 8 and is connected to one of the pair of main fixed contacts 18 and has the other of the pair of starting circuit contacts 14 disposed at one end;
- An insulating member 17 that electrically insulate
- the connector A15 and the connector B16 are pressed and sandwiched between the terminal block 11 and the main fixed iron core 12 via the insulating member 17 and the elastic member 19, so that a pair of It is not necessary to use a conductive member such as a screw to fix the starting circuit contact 14.
- the contact chamber 11a is separated into the main fixed contact side 11b and the main fixed iron core side 11c by the connector A15, the connector B16, the starting circuit contact 14 and the insulating member 17.
- the abrasion powder generated from the main movable contact 13, the pair of main fixed contacts 18, and the pair of start circuit contacts 14 does not come into electrical contact with the main fixed iron core 12, which is a ground circuit.
- the starter 1 can be reduced in size by incorporating the auxiliary relay 2 in the terminal block 11. Also, since the wiring for electrically connecting the auxiliary relay 2 and the starter electromagnetic switch device 3 can be incorporated in the starter electromagnetic switch device 3, the starter 1 can be downsized.
- FIG. 9 Next, the configuration of the starter electromagnetic switch device according to the second embodiment will be described.
- the connector A15, the connector B16, and the lead connector 23 which are integrally molded with the insulating member 17 in the first embodiment are configured to penetrate the elastic member 19. .
- the elastic member 19 includes the connector A15, the connector B16, and the lead connector.
- work which assembles 23 is required.
- the connector A15 and the connector B16 it is necessary to set the connector A15 and the connector B16 in the molding die of the insulating member 17. Which of the first and second embodiments is the best depends on conditions such as the number of productions, and therefore, the number of choices increases according to the second embodiment, and the best mode can be obtained.
- the pair of starting circuit contacts 14 fixed to the connector A15 and the connector B16 in the first embodiment are formed of the same member as the connector A15 and the connector B16. It is.
- the material shape of the connector A15 and the connector B16 is a plate shape, and is manufactured by sheet metal processing such as bending and punching.
- a pair of starting circuit contacts 14 is formed by a processing method such as drawing and overhanging using the same sheet metal processing machine (sequential feeding press) during the sheet metal processing.
- sheet-shaped material and sheet-metal processing were used here, arbitrary shapes and methods, such as a bar shape and a square material, can be selected as a processing method, such as a forging process.
- the starter electromagnetic switch device 3 configured as described above, it is not necessary to manufacture the pair of starting circuit contacts 14 in a separate process, and the work for fixing the pair of starting circuit contacts 14 to the connector A15 and the connector B16 is unnecessary. Therefore, the manufacturing cost can be reduced.
- the present invention is not limited to the embodiments, and various design changes can be made.
- the embodiments can be freely combined or the embodiments can be combined. Modifications and omissions can be made as appropriate.
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Abstract
Description
スタータ用電磁スイッチ装置はその2つの機能を発生させるために吸引コイル、保持コイルを有している。この吸引コイルの一端はモータ主電気回路に接続している。
このように接続することで吸引コイルは前記機能であるピニオン噛合動作中と、モータ主電気回路閉路動作中の短時間のみ電流を通電することができる。
その結果、吸引コイルは温度上昇が小さく、通電電流に対して低い耐熱性の材料であっても構成可能としている。
この相互作用があるため、吸引コイルと保持コイルの設計において、この4つの機能すべてを最良の状態とすることは困難である。
これを解決するため、吸引コイルを起動回路に変更し、保持コイルを吸引及び保持の機能を持たせた吸引コイルに変更したスタータ用電磁スイッチ装置が知られている(例えば特許文献1)。
この起動回路とは起動抵抗と起動回路接点を有しているものである。
この結果、主固定接点、主可動接点、起動回路接点の接点磨耗粉によって、起動回路接点と主固定鉄心の間にリークパスが生成され、リーク電流が流れるという欠点があった。
またコネクタAとコネクタBと起動回路接点と絶縁部材で接点室を主固定接点側と主固定鉄心側に分離している。これにより、主可動接点、一対の主固定接点、一対の起動回路接点から発生する磨耗粉がアース回路である主固定鉄心と電気的に触れることがない。
よってスタータ用電磁スイッチ装置の作動時に電圧が印加される一対の起動回路接点、コネクタA、コネクタBとアース回路である主固定鉄心の間にリークパスが発生せず、リーク電流が流れることがない。
図1~13において、スタータ1は補助リレー2、スタータ用電磁スイッチ装置3、モータ4を備えている。スタータ1は自力始動できない内燃機関を回転させる装置である。
補助リレー2はスタータ用電磁スイッチ装置3の作動をON/OFFする装置である。
スタータ用電磁スイッチ装置3はスタータ1のピニオンと内燃機関のリングギヤを噛み合わせるとともに、モータ4の主電気回路7を開閉する装置である。モータ4は内燃機関を回転させる動力を発生する装置である。
スタータ1はバッテリ5からの電力で作動する。その作動はキースイッチ6で制御される。
スタータ1の電気回路はモータ4の主電気回路7、起動回路8、吸引保持回路9、補助リレー回路10からなり、主電気回路7のモータ4を除いた回路がスタータ用電磁スイッチ装置3として構成される。
コネクタA15は、起動抵抗20と一対の起動回路接点14の一方の間を接続している。コネクタB16は、一対の起動回路接点14の他方と、一対の主固定接点18のモータ4が接続される方の間を接続している。
スタータ用電磁スイッチ装置3の端子台11は絶縁材料からなり、円柱形状の一部が径方向に突出した形状で、円柱軸方向一端の突出部に開口部があり、その開口部に補助リレー2を内蔵している。その反対側の他端には接点室11aが設けられる。
接点室11aは補助リレー2を内蔵する開口部とは軸方向反対側に設けられた開口部と主固定鉄心12で構成される空間であって、主可動接点13が可動する空間である共に一対の起動回路接点14、コネクタA15、コネクタB16、絶縁部材17を設置する空間である。
接点室11aの底部には一対の主固定接点18が設置され、開口部側には起動回路接点14、コネクタA15、コネクタB16、絶縁部材17が設置される。
開口部側に設置したこれらの部品によって接点室11aを一対の主固定接点側11bと主固定鉄心側11cに分離している(図4)。
また絶縁部材17は起動抵抗20と吸引コイル21が巻回される主巻枠22の口出し部22a、22b、22cで位置が決められる(図7)。
その状態でコネクタA15と起動抵抗20の一端および口出しコネクタ23と主固定鉄心12および口出しコネクタ23と吸引コイル21の一端が溶接される(図8)。
また絶縁部材17は主可動接点13が衝突した際の荷重および主可動接点13と一対の起動回路接点14が引き剥がされる際の荷重を受けられる材料・形状によって製作されるものである。
そして弾性部材19は浸水を防止するための接触面圧を発生可能な材料・形状によって製作されるものである。
この絶縁部材17と弾性部材19は同一金型内で異なる材料を成形(いわゆる2色成型)した一体化された部品でもよい。
よってコネクタA15とコネクタB16は、絶縁部材17と弾性部材19のどちらか一方に一体成型すると限られるものではなく、絶縁部材17と弾性部材19の中間に成形されるものであっても良い。
主固定鉄心12には雌ネジ12aが設けられ端子台11をネジ24を使って固定する(図6)。
なお、スタータ1がアースフロートタイプの場合、主固定鉄心12は吸引コイル21のアース回路とはならず、吸引コイル21とは必要とされる空間距離と沿面距離を保つように構成される。
起動回路接点14の頭部は主可動接点13との接触部で、その反対側は中空形状である。この中空部を塑性変形させることで一方はコネクタA15、他方はコネクタB16に固定している(図7,8)。
コネクタA15は導電材料であって起動抵抗20と一対の起動回路接点14の一方の間を接続している。
コネクタB16は導電材料であって一対の起動回路接点14の他方と一対の主固定接点18のモータ4が接続される方と接続している。
このように接続することで吸引コイル21の一端と副コイル25の一端をバッテリ5のマイナス側と電気的に接続している。
なお、可能であれば吸引コイル21を直接主固定鉄心12に溶接したり、副コイル25と溶接すればよく、口出しコネクタ23を使用しない構成も可能である。
またスタータ1がアースフロートタイプの場合、口出しコネクタ23と主固定鉄心12は溶接されず、必要とされる空間距離と沿面距離を保つように構成される。
起動抵抗20の一端は一対の副固定接点28の一方と電気的に接続され、他端は一対の起動回路接点14の一方と電気的に接続される。
副コイル25は導電材料であり副巻枠26に巻回される(図5)。副コイル25の一端はキースイッチ6と電気的に接続され、他端はバッテリ5のマイナス側と電気的に接続される。
スタータ1はキースイッチ6がONになると補助リレー2の副コイル25に電流が流れ、その磁力により副可動接点27が一対の副固定接点28方向に移動し、一対の副固定接点28間が副可動接点27で短絡され、起動回路8と吸引保持回路9にバッテリ5から電流が流れる。
同時にスタータ1のピニオンが内燃機関のリングギヤと噛合い動作を始め、モータ4も起動抵抗20からの電流で緩やかに回転を始める。
その結果、起動回路8に電流が流れなくなるが、吸引コイル21の磁力で主可動接点13は移動し続ける。
最終的に一対の主固定接点18間が主可動接点13で短絡され、モータ4にバッテリ5からの電力が供給されてモータ4が全力で回転し内燃機関を回転させる。
これにより副コイル25に電流が流れなくなるので、副可動接点27は一対の副固定接点28から離れる方向に移動する。
そして一対の副固定接点28間の短絡が解除され、吸引コイル21に電流が流れなくなる。その結果、主可動接点13は一対の主固定接点18から離れる方向に移動し、一対の主固定接点18間の短絡が解除されることで、モータ4に電流が流れなくなる。
また吸引コイル21に電流が流れなくなると、スタータ1のピニオンと内燃機関のリングギヤの噛合いも外れるので、モータ4、ピニオンともに動作前の静止状態に戻る。
モータ4の主電気回路7を構成する一対の主固定接点18と、
モータ4の起動回路8を構成する一対の起動回路接点14と、
一対の主固定接点18と一対の起動回路接点14との間に移動可能に配置され、一対の主固定接点18を開閉することでモータ4の主電気回路7を開閉すると共に、
一対の起動回路接点14間を開閉することでモータ4の起動回路8を開閉する主可動接点13と、
起動回路8を構成しモータ4の起動電流が流れる起動抵抗20と、
主可動鉄心を一対の主固定接点方向に移動させるための磁界を発生する吸引コイル21と、
吸引コイル21の磁界により磁力を発生させる磁気回路を構成する主固定鉄心12と、
主固定接点18が固定されると共に主可動接点13が可動する空間となる接点室11aを備えた端子台11と、
起動回路8を構成し起動抵抗20と接続され一対の起動回路接点14の一方を一端に配置するコネクタA15と、
起動回路8を構成し一対の主固定接点18の一方と接続され一対の起動回路接点14の他方を一端に配置するコネクタB16と、
コネクタA15とコネクタB16を主固定鉄心12から電気的に絶縁する絶縁部材17と、
接点室11aを封止する弾性部材19を備え、
コネクタA15とコネクタB16は絶縁部材17と弾性部材19を介して端子台11と主固定鉄心12で挟持されるように構成されている。
またコネクタA15とコネクタB16と起動回路接点14と絶縁部材17で接点室11aを主固定接点側11bと主固定鉄心側11cに分離している。これにより主可動接点13、一対の主固定接点18、一対の起動回路接点14から発生する磨耗粉がアース回路である主固定鉄心12と電気的に触れることがない。
よってスタータ用電磁スイッチ装置3の作動時に電圧が印加される一対の起動回路接点14、コネクタA15、コネクタB16とアース回路である主固定鉄心12の間にリークパスが発生せず、リーク電流が流れることがない。
また補助リレー2を端子台11に内蔵することで、スタータ1が小型化が可能である。
また補助リレー2とスタータ用電磁スイッチ装置3を電気的に接続する配線もスタータ用電磁スイッチ装置3に内蔵することが可能になるので、スタータ1の小型化が可能である。
次に、実施の形態2によるスタータ用電磁スイッチ装置の構成について説明する。
実施の形態2においては、図9,10に示すように、実施の形態1で絶縁部材17と一体成型していたコネクタA15、コネクタB16、口出しコネクタ23が弾性部材19を貫通するように構成した。
一方、実施の形態1の場合は絶縁部材17の成形金型内にコネクタA15、コネクタB16をセットする作業が必要である。
実施の形態1,2のどちらが最良の形態であるかは、生産数等の条件によって変わるので、実施の形態2によって選択肢が増え、最良の形態を得ることが可能である。
次に、実施の形態3によるスタータ用電磁スイッチ装置の構成について説明する。
実施の形態3においては、図11~13に示すように、実施の形態1でコネクタA15、コネクタB16に固定していた一対の起動回路接点14をコネクタA15、コネクタB16と同一部材で形成したものである。
コネクタA15、コネクタB16の材料形状は板状であって曲げ、打抜といった板金加工で製作する。
この板金加工時に同じ板金加工機械(順送プレス機)を用いて絞り加工、張出し加工といった加工方法により一対の起動回路接点14を形成したものである。
なお、ここでは板状の材料、板金加工を使用したが、材料形状は棒材や角材等、加工方法は鍛造加工等、任意の形状、方法を選択可能である。
Claims (6)
- モータの主電気回路を構成する一対の主固定接点と、
前記モータの起動回路を構成する一対の起動回路接点と、
前記一対の主固定接点と前記一対の起動回路接点との間に移動可能に配置され、前記一対の主固定接点間を開閉することで前記主電気回路を開閉すると共に、前記一対の起動回路接点間を開閉することで前記起動回路を開閉する主可動接点と、
前記起動回路を構成し前記モータの起動電流が流れる起動抵抗と、
主可動鉄心を前記一対の主固定接点方向に移動させるための磁界を発生する吸引コイルと、
前記吸引コイルの磁界により磁力を発生させる磁気回路を構成する主固定鉄心と、
前記一対の主固定接点が固定されるとともに主可動接点が可動する空間となる接点室を備える端子台と、
前記起動抵抗回路を構成し前記起動抵抗と接続され前記一対の起動回路接点の一方を一端に配置するコネクタAと、
前記起動抵抗回路を構成し前記一対の主固定接点の一方と接続され前記一対の起動回路接点の一方を一端に配置するコネクタBと、
前記コネクタAと前記コネクタBを主固定鉄心から電気的に絶縁する絶縁部材と、
前記接点室を封止する弾性部材を備え、
前記コネクタAと前記コネクタBは前記絶縁部材と前記弾性部材を介して前記端子台と前記主固定鉄心で挟持されている
ことを特徴とするスタータ用電磁スイッチ装置。 - 前記コネクタAと前記コネクタBの少なくとも一方は、前記絶縁部材と前記弾性部材の少なくとも一方と一体化して構成されたことを特徴とする請求項1に記載のスタータ用電磁スイッチ装置。
- 前記コネクタAと前記コネクタBの少なくとも一方が、前記弾性部材を貫通していることを特徴とする請求項1または2に記載のスタータ用電磁スイッチ装置。
- 前記起動回路と前記吸引コイルの電流を通電・遮断する補助リレーが前記端子台に内蔵されていることを特徴とする請求項1から3のいずれか一項に記載のスタータ用電磁スイッチ装置。
- 前記起動回路接点の一方は前記コネクタAと、前記起動回路接点の他方は前記コネクタBと同一部材から形成されていることを特徴とする請求項1から4のいずれか一項に記載のスタータ用電磁スイッチ装置。
- 前記接点室は、前記コネクタAと前記コネクタBと前記起動回路接点と前記絶縁部材で前記主固定接点側と前記主固定鉄心側に分離されていることを特徴とする請求項1から5のいずれか一項に記載のスタータ用電磁スイッチ装置。
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JP2018513966A JP6407486B2 (ja) | 2016-04-26 | 2016-04-26 | スタータ用電磁スイッチ装置 |
PCT/JP2016/062966 WO2017187493A1 (ja) | 2016-04-26 | 2016-04-26 | スタータ用電磁スイッチ装置 |
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- 2016-04-26 JP JP2018513966A patent/JP6407486B2/ja not_active Expired - Fee Related
- 2016-04-26 US US16/070,715 patent/US10890154B2/en active Active
- 2016-04-26 EP EP16900366.2A patent/EP3450742B1/en active Active
- 2016-04-26 CN CN201680084720.8A patent/CN109072851B/zh not_active Expired - Fee Related
- 2016-04-26 WO PCT/JP2016/062966 patent/WO2017187493A1/ja active Application Filing
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DE112018008125T5 (de) | 2018-11-09 | 2021-07-29 | Mitsubishi Electric Corporation | Elektromagnetische Schaltungseinrichtung |
Also Published As
Publication number | Publication date |
---|---|
US20190017485A1 (en) | 2019-01-17 |
EP3450742A1 (en) | 2019-03-06 |
EP3450742A4 (en) | 2019-03-06 |
CN109072851B (zh) | 2020-10-27 |
JPWO2017187493A1 (ja) | 2018-07-05 |
JP6407486B2 (ja) | 2018-10-17 |
EP3450742B1 (en) | 2019-09-25 |
CN109072851A (zh) | 2018-12-21 |
US10890154B2 (en) | 2021-01-12 |
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