CN107835898A - Magnetic switch and engine starting gear - Google Patents

Abstract

It is an object of the invention to provide it is a kind of will can be not pushed out to the position of engagement with ring gear in little gear in the state of drive and this case that starter motor be preventive from the electromagnetic switch and engine starting gear of possible trouble.The magnetic switch (7) of the present invention has：Fixed contact (212,214), it is fixed on shell (217)；Travelling contact (211), it is configured to abut with fixed contact (212,214)；First plunger (207), it transfers travelling contact (211) towards fixed contact (212,214)；And second plunger (201), it transfers the little gear being arranged on engine starting gear, the second plunger (201) feeding amount for below setting in the case of, the transfer of the first plunger (207) is restricted.

Description

Magnetic switch and engine starting gear

Technical field

The engine starting gear (starter) and its magnetic switch employed are acted the present invention relates to a kind of engine of vehicle.

Background technology

As the background technology of the art, there are Japanese Patent Laid-Open 2010-248999 publications (patent document 1). A kind of starter (engine starting gear) has been recorded in the publication, wherein, to what little gear was released towards ring gear side Little gear release is powered to respectively having with switch and formed by being powered with solenoid and the motor that motor contact is opened and closed The solenoid coil and switch coil of electromagnet, the fixation that both share is configured between the solenoid coil and switch coil Iron core, and release the solenoid yoke and covering motor with solenoidal periphery formed with covering little gear continuously in axial direction The switch yoke of the periphery of energization switch, and be to be set in the form of an overall yoke integral (with reference to summary).

Prior art literature

Patent document

Patent document 1：Japanese Patent Laid-Open 2010-248999 publications

The content of the invention

Problems to be solved by the invention

In the starter of patent document 1, little gear (is kept out of the way into position from initial position using little gear release solenoid Put) release and it is engaged to the ring gear linked with engine, it is powered using motor closed motor contact with switch afterwards Close and starter motor (motor) is powered, so that pinion rotation.The release of little gear and the control of the driving of starter motor System is by controller provisioned on the control unit of engine (ECU) and engine starting gear of the control of carry out engine (starting machine controller) is performed.

In the usual engine starting gear including the starter of patent document 1, for can be examined by ECU For the obstacle or failure that measure, ECU can prevent the driving of starter motor in possible trouble.But it can not be detected ECU occurs Obstacle or failure and cause in the case that little gear is not pushed out to the position of engagement with ring gear, probably can be in little gear Start the driving of starter motor in the state of not engaged with ring gear.In addition, the motor contact being powered to starter motor is logical Motor energization is crossed to be opened and closed with switch, and motor is powered and driven with switch typically by relay.If the relay Device malfunctions and causes motor energization switch to be driven, then can be not pushed out in little gear to the position of engagement with ring gear In the state of to starter motor be powered and start the driving of starter motor.

It will can be not pushed out it is an object of the invention to provide a kind of in little gear to the position of engagement with ring gear In the state of drive and this case that starter motor be preventive from the magnetic switch and engine starting gear of possible trouble.

The technological means solved the problems, such as

In order to reach above-mentioned purpose, magnetic switch of the invention has：Fixed contact, it is fixed on shell；Movably connect Point, it is arranged to abut to the fixed contact；First plunger, it moves the travelling contact towards the fixed contact Send；And second plunger, it is transferred little gear set on engine starting gear, is in the feeding amount of second plunger In the case of below setting, the transfer of first plunger is restricted.

In order to reach above-mentioned purpose, engine control system of the invention possesses：Starter motor；Little gear, it is by described Starter motor is rotated driving；And shift mechanism, it transfers described little gear, and possesses above-mentioned magnetic switch conduct pair Go to the mechanism that contact set on the power-on circuit of the starter motor is opened and closed.

The effect of invention

According to the present invention, in the case where little gear is not moved to the position engaged with ring gear by the second plunger, One plunger can not be moved to the position of junction closure set on the power-on circuit for going to starter motor, therefore, it is possible to incite somebody to action Possible trouble is preventive from this case that starter motor is driven under little gear is not pushed out to the position of engagement state with ring gear.

Problem, composition and effect other than the above will be subject to clearly by the explanation of implementation below.

Brief description of the drawings

Fig. 1 is the stereogram of the outward appearance for the engine starting gear 1 for representing the 1st embodiment of the present invention.

Fig. 2 is the side view for the engine starting gear 1 that the direction shown in the arrow II from Fig. 1 is observed.

Fig. 3 is the outside drawing of the engine starting gear 1 of the present embodiment from rear side.

Fig. 4 is the circuit diagram of the major part of the electric composition for the engine starting gear 1 for representing the present embodiment.

Fig. 5 is the schematic diagram for representing to be arranged at the distribution structure of the outside of the engine starting gear 1 of the present embodiment.

Fig. 6 is the figure of the composition of the run through bolt 9 for the engine starting gear 1 for representing the present embodiment.

Fig. 7 is the outside drawing for the outward appearance observed from side for representing magnetic switch 7.

Fig. 8 is the outside drawing for the outward appearance observed from rear side (portion of terminal side) for representing magnetic switch 7.

Fig. 9 is the IX-IX for representing the magnetic switch 7 shown in Fig. 6 to the sectional view regarding section.

Figure 10 is the IX-IX for representing the magnetic switch 7 shown in Fig. 6 to the sectional view regarding section.

Figure 11 is the sectional view near enlarged representation the first solenoid coil 30AC and the second solenoid coil 30BC.

Embodiment

Below, embodiments of the invention are illustrated.

Embodiment 1

First, using Fig. 1 and Fig. 2, to being monolithically fabricated for engine starting gear (starter) 1 of the invention It is bright.Fig. 1 is the stereogram of the outward appearance for the engine starting gear 1 for representing the present embodiment.Fig. 2 is shown in the arrow II from Fig. 1 The side view for the engine starting gear 1 that direction is observed.Fig. 3 is the engine starting gear 1 of the present embodiment from rear side Outside drawing.Furthermore in the following description, front side and rear side are defined to be used as shown in FIG. 2.That is, On the direction along center line CL, the side of gear cover 2 is defined as front side, the side of starter control apparatus 3 is defined as rear side.

Engine starting gear 1 possesses gear cover (gear housing) 2 in front side, possesses starter control apparatus 3 in rear side, Possesses starter motor 4 in the pars intermedia of gear cover 2 and starter control apparatus 3.The periphery of starter motor 4 is covered by case 4A, The end of case 4A rear side is covered by bonnet 6.Case 4A and bonnet 6 form the housing (starter motor housing) of starter motor 4. Furthermore case 4A is the component for the yoke for forming starter motor 4.Case 4A and bonnet 6 are included in starter motor 4, following Explanation in, the starter motor comprising case 4A and bonnet 6 is also collectively referred to as starter motor 4 sometimes and illustrated.

Gear cover 2 houses shift mechanism 12 (with reference to figure 4), one-way clutch 10 (with reference to figure 4) and (reference chart of little gear 13 4) etc., there is cylindrical portion 2A in rear side.Engine starting gear 1 is fixed on the installation portion 5 of engine side from cylindrical portion 2A's Outer peripheral face is protruding outside towards radial direction and is in be arranged on flange shapely on gear cover 2.Pass through the spiral shell on installation portion 5 is formed at Intert bolt (not shown) in bolt inserting hole 5A, engine starting gear 1 is able to be fastened on engine side.

And then the outer peripheral face of the cylindrical portion 2A in gear cover 2, by from a manner of the outer peripheral face is protruding outside towards radial direction It is provided with the magnetic switch installation portion 8 of the drive division i.e. magnetic switch (electromagnetic switch) 7 (with reference to figure 4) of fixed shift mechanism 12. The cylindrical portion 2A of gear cover 2 forms the fixed part of starter motor 4, and starter motor 4 is provided with the end of cylindrical portion 2A rear side. Starter motor 4 is in the cantilever-shaped rear end installed in cylindrical portion 2A, in addition, magnetic switch 7 is opened in cantilever-shaped installed in magnetic Installation portion 8 is closed, starter motor 4 and magnetic switch 7 are with the rotating shaft of starter motor 4 or the output across decelerator (not shown) Mode parallel with the drive shaft of magnetic switch 7 axle 4B (with reference to figure 5) is arranged side by side.

Starter control apparatus 3 is solenoid 30 (reference of the control to being arranged in starter motor 4 and magnetic switch 7 The device of energization Fig. 4).The shell 3A for housing starter control apparatus 3 is installed in the opposite with the side of starter motor 4 of bonnet 6 The end (end face) of that side.It is provided with the shell 3A of starter control apparatus 3 peripheral part and is filled to be controlled with engine Put (control unit of engine：ECU the connector 104) being electrically connected.

Herein, using Fig. 6, the composition of run through bolt 9 is illustrated.Fig. 6 is that the engine for representing the present embodiment starts The figure of the composition of the run through bolt 9 of device 1.

In the present embodiment, 3 run through bolt are provided with a manner of circumferentially vacating interval in shell 3A peripheral part Linking part 3B (with reference to figure 3).Formed with being penetrated from rear side to the through hole 3B1 of front side on run through bolt linking part 3B.In through hole 3B1 pars intermedia is provided with metal system (being copper in the present embodiment) annular component 3B2.Formed with edge on annular component 3B2 Axis direction insertion annular component 3B2 through hole 3B3.

Shell 3A forms the resin-made housing (starter control apparatus housing) of starter control apparatus 3, and forms and start The circuit unit of machine starting device 1.Above-mentioned metal annular component 3B2 is molded in be formed on shell 3A resin.In addition, shell 3A is by the circuit substrate resettlement section 3AA for containing circuit substrate and the flange portion (flange part) for being formed through bolt link portion 3B 3AB is formed, and circuit substrate resettlement section 3AA and flange portion (flange part) 3AB are to be laminated and form along center line CL directions.Furthermore Shell 3A is comprised in starter control apparatus 3, in the following description, is sometimes also controlled the starter comprising shell 3A Device is collectively referred to as starter control apparatus 3 and illustrated.

Center line CL is the line segment through the axle center of the rotating shaft of starter motor 4, is through across decelerator (not shown) The line segment in the axle center of the output shaft of starter motor 4.

3 run through bolt breakthrough parts (flange portion) are provided with a manner of circumferentially vacating interval in the peripheral part of bonnet 6 6A.Formed with the through hole 6A1 penetrated in the axial direction on run through bolt breakthrough part 6A.Bonnet 6 is metal system (in the present embodiment For aluminum), the ground connection of composition starter motor 4.Starter control apparatus 3 is assembled from the rear side of bonnet 6.

Screw forming portion 2B at 3, the spiral shell are provided with a manner of circumferentially vacating interval on the cylindrical portion 2A of gear cover 2 Hole forming portion 2B is formed the outer peripheral face protrusion from cylindrical portion 2A.In the axial direction formed with screw on screw forming portion 2B 2B1。

Bolt 9 is will pass through towards front side (side of gear cover 2) be interspersed in the ring that is arranged on run through bolt linking part 3B from rear side In shape component 3B2 through hole 3B3 and run through bolt breakthrough part 6A through hole 6A1, and it is threaded onto the screw for being formed at gear cover 2 Screw 2B1 on forming portion 2B.Thus, starter control apparatus 3 (shell 3A) is able to link with gear cover 2, fixed.

Now, the annular component 3B2 of starter control apparatus 3 is abutted to run through bolt breakthrough part 6A end face 6A2, is passed through The fastening force for wearing bolt 9 is pressed against on the 6A2 of end face.1 annular component 3B2 in 3 annular component 3B2 by bus 3B2B with The ground terminal 103 of starter control apparatus 3 electrically connects.Thus, it is by using run through bolt 9 that starter control apparatus 3 is tight Gu on gear cover 2, the ground terminal 103 of starter control apparatus 3 is able to electrically connect with the ground connection of the i.e. starter motor 4 of bonnet 6.

The run through bolt 9 being interspersed in shell 3A run through bolt linking part 3B through hole 3B1 is configured to interspersed bonnet 6 Run through bolt breakthrough part 6A.Fastening force between shell 3A and gear cover 2 is acted on to start horse by run through bolt 9 The mode that the case 4A of starter motor 4 is compressed on up to 4 rotating shaft 4B directions works.The fastening force causes bonnet 6 and starts horse Up to 4 sandwicheds, it is fixed between shell 3A and gear cover 2.In the present embodiment, run through bolt 9 configures the case in starter motor 4 (yoke) 4A outside and be exposed to outside.

In the present embodiment, the distance L1 of 2 run through bolt 9 of the side of magnetic switch 7 is disposed in than 2 run through bolt Formed distance L2, L3 is short between each side in 9 and the run through bolt 9 for arranging farthest from magnetic switch 7.The present embodiment is such as Lower composition：Especially distance L2 is being set to equal with distance L3 and is being projected in the plane of the rotating shaft 4B perpendicular to starter motor 4 In the case of upper, 3 run through bolt 9 are configured on the summit of isosceles triangle.

In the present embodiment, by the way that 3 run through bolt 9 are configured on the summit of isosceles triangle, carried in the side of magnetic switch 7 The high supporting force (fixed force) of starter motor 4.Thus, reduce vibration and filled to being arranged at magnetic switch 7 with starter control Put the influence of wiring part (bus) 20B, 20M, 20S between 3.In addition, by running through spiral shell in 2 of side L1 both ends in configuration Wiring part (the inside distribution for including starter control apparatus 3) 20B, 20M, 20S is set between bolt 9, avoids starter control The fixed part of device 3 and wiring part 20B, 20M, 20S interference, so as to be easy to carry out wiring operation.

Also 3 run through bolt 9 can be configured on the top of equilateral triangle in a manner of distance L1, distance L2, distance L3 are equal Point.In this case, configured compared to by 3 run through bolt 9 for the situation on the summit of isosceles triangle, the branch in circumference Load becomes uniform.But can avoid the fixed structure of starter control apparatus 3 and wiring part 20B, 20M, 20S interference this Situation is constant.

Case (magnetic switch housing) 7A of magnetic switch 7 back end surface 7AB be provided with cell connection terminal 15B, Motor connection terminal 15M and solenoid connection terminal 15S, the cell connection terminal 15B connections come from battery 50 (with reference to figure 4) Wirning harness 22 (with reference to figure 4) and bus 20B from starter control apparatus 3, the motor connection terminal 15M connections to The bus 20M being powered from starter control apparatus 3 to starter motor 4, the solenoid connection terminal 15S connections to from The bus 20S that starter control apparatus 3 is powered to the solenoid 30B of magnetic switch 7 (with reference to figure 4).Cell connection terminal 15B, motor connection terminal 15M and solenoid connection terminal 15S are the connection terminals for Wiring construction element electrical connection.

Furthermore case 7A is included in magnetic switch 7, in the following description, will also include case 7A magnetic sometimes Switch is collectively referred to as magnetic switch 7 and illustrated.

The bus 20B from starter control apparatus 3, cell connection terminal are electrically connected with cell connection terminal 15B 15B turns into the relay terminal that cell voltage is supplied to starter control apparatus 3.In addition, it is connected with motor connection terminal 15M The wirning harness 21 drawn from starter motor 4, then from starter control apparatus 3 to starting in being carried out to motor connection terminal 15M Motor 4 is powered.That is, motor connection terminal 15M is to from the relay that starter motor 4 is powered to starter motor 4 Son.

Bus 20B, bus 20M and bus 20S are from starter control apparatus 3 towards the side of the rotating shaft 4B along starter motor 4 To being extended, it is connected with cell connection terminal 15B, motor connection terminal 15M and solenoid connection terminal 15S.

Bus 20B, bus 20M and bus 20S's connects with cell connection terminal 15B, motor connection terminal 15M and solenoid The end set of connecting terminal 15S connections has the branch for being divided into two strands, and branch is with around each terminal 15B, 15M, 15S The mode of a part be fastened on by nut 28B, 28M, 28S on each terminal 15B, 15M, 15S.Thus, become electrical connection Obtain well, and realize the attachment structure of vibration resistance.

Then, using Fig. 4 and Fig. 5, the electric composition of engine starting gear and action are illustrated.Fig. 4 is expression The circuit diagram of the major part of the electric composition of the engine starting gear 1 of the present embodiment.Fig. 5 is to represent starting for the present embodiment The outside of machine starting device 1 distribution structure schematic diagram.

The side of the positive electrode of battery supply 50 is via ignition switch 60 and engine control system (control unit of engine：ECU) 70 electrical connections.ECU electrically connects via connector 104 with the controller (ASIC) 110 of starter control apparatus 3.In addition, igniting is opened The outlet side of pass 60 also electrically connects with controller 110, and controller 110 is via the side of the positive electrode of ignition switch 60 and battery supply 50 electricity Connection.

Magnetic switch 7 is made up of the solenoid 30 for possessing the first solenoid 30A and the second solenoid 30B.First solenoid 30A one end electrically connects with the terminal 17 being arranged on magnetic switch 7, and terminal 17 is defeated via wirning harness 24 and relay 80 Go out side electrical connection.The input side of relay 80 electrically connects with the side of the positive electrode of battery supply 50.On the other hand, the first solenoid 30A The other end electrically connected with terminal 19.Terminal 19 is grounded on noumenally 31.

It is noumenally gear cover 2, gear cover 2 is in earthing potential.

Second solenoid 30B one end is connected with solenoid connection terminal 15S, and solenoid connection terminal 15S is via mother Line 20S electrically connects with the terminal 105 of starter control apparatus 3.Terminal 105 is electrically connected with the switch element 150 being made up of MOSFET Connect.On the other hand, the second solenoid 30B the other end electrically connects with terminal 19.

First solenoid 30A electrically connects via relay 80 with the side of the positive electrode of battery supply 50, by turn-on relay 80, First solenoid 30A is powered from battery supply 50.Relay 80 controls conducting disconnected by ECU 70 by signal wire 25 Open.

MOSFETs 150 of the second solenoid 30B with forming switch element source S electrically connects, MOSFET 150 drain electrode D is connected via the terminal 101 and bus 20B of starter control apparatus 3 with cell connection terminal 15B, and then via wirning harness 22 electrically connect with the side of the positive electrode of battery supply 50.MOSFET 150 grid G passes through signal wire 150S and controller (ASIC) 110 Electrical connection, MOSFET 150 receive the control signal from controller 110 and turn on disconnection.Turned on by MOSFET150, to Two solenoid 30B carry out the energization from battery supply 50.

In the present embodiment, the transfer of the first plunger 207 (with reference to figure 7) described later is by as electric switch MOSFET150 limitation.That is, MOSFET 150 controls the transfer of the first plunger 207.In this case, the shifting of the first plunger 207 Control is sent to be carried out by MOSFET 150, the MOSFET 150 is to transferring the second of the second plunger 201 (with reference to figure 7) described later Solenoid 30B energization is controlled.

Starter motor 4 is made up of d.c. motor, and the electrode of the side of the positive electrode of starter motor 4 is connected via wirning harness 21 with motor Terminal 15M is electrically connected.Motor connection terminal 15M electrically connects via bus 20M with the terminal 102 of starter control apparatus 3.Terminal 102 MOSFET 120 with forming switch element source S is electrically connected, and MOSFET 120 drain D controls via starter to be filled The terminal 101 and bus 20B for putting 3 are connected with cell connection terminal 15B, and then via wirning harness 22 and battery supply 50 just Pole side electrically connects.On the other hand, the electrode of the negative side of starter motor 4 is connected with terminal 18.Terminal 18 via run through bolt 9 or Case (yoke) 4A of person's starter motor 4 electrically connects with noumenally 31.

The fixed contact 214 of magnetic switch 7 described later, another fixation are electrically connected with motor connection terminal 15M Contact 212 is connected via cell connection terminal 15B with the positive terminal of battery supply 50.

Because noumenally 31 are arranged on gear cover 2, therefore, case (yoke) 4A of run through bolt 9 or starter motor 4 Between the terminal 18 and terminal 19 of the electrode for the negative side for being stored in connection starter motor 4 that is situated between.

In the present embodiment, as the power-on circuit for going to starter motor 4, it is provided with fixed contact 212 and fixes Contact 214 is come the power-on circuit that is powered and by MOSFET 120 come the power-on circuit that is powered.Stop in long-time , it is necessary to which larger driving current is to drive starter motor 4 in the case of starting engine afterwards.In contrast, by relatively Short dwell time and in the case of restarting, the driving current of starter motor 4 is low current.For example, put out for idling For fire etc., MOSFET 120 power-on circuit can be used to be powered to starter motor 4 and start engine.

MOSFET 120 grid G is electrically connected by signal wire 120S with controller 110, and MOSFET 120, which is received, carrys out automatic control The control signal of device 110 processed and turn on disconnection.Turned on by MOSFET 120, starter motor 4 is carried out to come from battery supply 50 Energization.Furthermore from control in a manner of the on-state rate (Duty) based on the instruction from ECU 70 is powered to starter motor 4 Grid G output control signal of the device 110 processed to MOSFET 120.

Furthermore MOSFET 150 drain D and MOSFET 120 drain D are grounded via capacitor 170.Electricity is set Container 170 is to absorb surge when MOSFET 150 and MOSFET 120 switch.

MOSFET 150 source S is connected by terminal 105 with the second solenoid 30B, on the other hand, via diode 160 are connected with the terminal 103 of starter control apparatus 3.In addition, MOSFET 120 source S passes through terminal 102 and starter motor 4 connections, on the other hand, are connected via diode 130 with the terminal 103 of starter control apparatus 3.Terminal 103 is via distribution zero The terminal 18 of negative electrode side of the part 23 with being arranged at starter motor 4 is connected.

Specifically, terminal 18 electrically connects with bonnet 6, and terminal 18 and bonnet 6 are ground connection (ground connection) current potential.In addition, end Son 103 is ground connection (ground connection) terminal of starter control apparatus 3, is electrically connected with bonnet 6.The earth terminal of starter control apparatus 3 Son 103 electrically connects with the terminal 18 of the negative electrode side of starter motor 4 via bonnet 6, and bonnet 6 forms one of Wiring construction element 23 Point.

In the present embodiment, preferably by fastening run through bolt 9 by the ground terminal 103 of starter control apparatus 3 and bonnet 6 Electrical connection.In this case, ground terminal 103 can be electrically connected with bonnet 6 via run through bolt 9.Or also can be through spiral shell The abutting part for tethering knot (flange portion) 3B and run through bolt breakthrough part (flange portion) 6A sets conductive member respectively, will pass through spiral shell The conductive member for tethering knot 3B sides is electrically connected to terminal 103, will pass through the conductive member of bolt breakthrough part (flange portion) 6A sides Terminal 18 is electrically connected to, abuts two conductive members to electrically connect by fastening run through bolt 9.In this case, also can profit Terminal 103 is formed with the conductive member of run through bolt linking part 3B sides.

Bonnet 6 noumenally 31 electrically connects via the yoke 4A of run through bolt 9 or starter motor 4 and gear cover 2.Cause And bonnet 6 is ideally equipotential with gear cover 2, in earthing potential.In fact, due to run through bolt 9 or starter motor Resistance be present in 4 yoke 4A etc., thus it is strict for, potential difference can be produced between bonnet 6 and gear cover 2.

Diode 130 is to be back to caused surge current Is when being cut off the energization of starter motor 4 to start horse Up to 4 fly-wheel diode, terminal 103 is electrically connected with terminal 18 by using distribution part 23, forms connection fly-wheel diode 130th, terminal 102, bus 20M, motor connection terminal 15M, starter motor 4, terminal 18 (ground connection), terminal 103 (ground connection) are closed Close circuit.I.e., in the present embodiment, constituted in the power-on circuit being powered to starter motor 4 and flow circulating current Is To the closed circuit of starter motor 4.It is used for the drive of starter motor 4 by the circulating current Is that will be circulated in the closed circuit It is dynamic, it is able to seek power saving.Furthermore Id is represented by MOSFET 120 and the driving current of the starter motor 4 of supply.

Above-mentioned electrical connection is realized as being schematically shown in Fig. 5.As described above, in Fig. 5, starter control apparatus 3 Ground terminal 103 electrically connected with the terminal 18 of the negative electrode side of starter motor 4 via bonnet 6.

When ignition switch 60 turns on, ECU 70 starts controller 110 at the time point that initialization is completed, and starts starter The action of control device 3.In addition, ECU 70 turns on relay 80 at the time point that initialization is completed by the output of signal wire 25 Signal.In addition, in starter control apparatus 3 upon actuation, from controller 110 by signal wire 150S to MOSFET 150 Grid G output Continuity signal.

When relay 80 and MOSFET 150 are turned on and when being powered to the first solenoid 30A and the second solenoid 30B, Shift mechanism 12 is driven, so as to release one-way clutch 10 and little gear 13 towards the direction shown in arrow A.It is shifted mechanism 12 The little gear 13 released from retreating position engages with being linked to the ring gear 500A of engine 500.That is, shift mechanism 12 is to use So that the mechanism of the displacement between retreating position and the position of engagement of the ring gear 500A with being linked to engine of little gear 13.

When little gear 13 engages with ring gear 500A, from controller 110 by signal wire 120S to MOSFET 120 Export Continuity signal.Furthermore Continuity signal in this case is defeated in a manner of as the conductance indicated by ECU (Duty) Go out.Thus, starter motor 4 causes little gear 13 to rotate by driving.And then the ring gear 500A engaged with little gear 13 turns It is dynamic, so that engine 500 starts.

Then, using Fig. 2, the composition of bus is illustrated.In the present embodiment, bending is provided with bus 20B Portion 20-3.As bus 20B, bending section 20-3 is also equipped with bus 20M, 20S, but in Fig. 2, bus 20M, 20S's Bending section 20-3 is the state that is blocked and can't see.

The bending section 20-3 being arranged on bus 20B, 20M, 20S improves the assembleability of engine starting gear 1.That is, exist In engine starting gear 1 as the present embodiment, on the direction along the rotating shaft 4B of starter motor 4, it is difficult to make size smart Degree reaches high accuracy.Therefore, bus 20B, the bus 20M of the side of starter control apparatus 3 and bus 20S position are arranged on setting Put the cell connection terminal 15B, motor connection terminal 15M and solenoid connection end in magnetic switch case 7B back end surface 7B Sub- 15S position is possible to deviate on the direction along the rotating shaft 4B of starter motor 4.Bending section 20-3 is absorbed along this The deviation in rotating shaft 4B direction, thus, the assembleability being improved particularly in wiring operation.In addition, causing bus because of thermal expansion 20B, bus 20M and bus 20S position and cell connection terminal 15B, motor connection terminal 15M and solenoid connection terminal In the case that 15S position is deviateed, also the deviation can be absorbed by bending section 20-3.And then bending section can be passed through 20-3 come reduce because of vibration and caused by the stress of bus wire portion.

If illustrating, bus 20B, 20M, 20S of the present embodiment possess part 1 20-1 and part 2 20-2, institute State part 1 20-1 to be extended from starter control apparatus 3 towards the direction of the rotating shaft 4B along starter motor 4, described 2nd Divide 20-2 on the direction (radial direction of starter motor 4) vertical with the direction of the rotating shaft 4B along starter motor 4 from starting The central side of motor 4 is extended towards outside, also, is provided between part 1 20-1 and part 2 20-2 along rising More loose bending section 20-3 on the rotating shaft 4B of dynamic motor 4 direction.That is, bending section 20-3 connection part 1 20-1 and the 2nd Part 20-2.

Then, using Fig. 7, the composition of magnetic switch 7 is described in detail.Fig. 7 is by the first solenoid 30A and second Solenoid 30B be set to obstructed electricity condition in the case of magnetic switch 7 sectional view (Fig. 3 VII-VII is to regarding section).Again Person, in the following description, illustrated using the direction in Fig. 7 shown in arrow l7 as axis direction.Axis direction l7 be with Center line CL is parallel and direction in the same plane is included together with center line CL.Also, axis direction l7 and plunger axis 207B, transfer limitation shaft component 207C and shaft component 201A axle center (central axis) are consistent.

First, using Fig. 7, the composition of magnetic switch 7 is illustrated.Furthermore Fig. 7 shows the first solenoid 30A and the second solenoid 30B be set to obstructed electricity condition in the case of state.

The first solenoid 30A and the second solenoid 30B are provided with magnetic switch 7.First solenoid 30A is formed to inciting somebody to action Battery electric power leads to the actuator that the switch 211,212,214 of starter motor 4 is opened and closed.In addition, the second solenoid 30B is formed The actuator being driven to the shift mechanism 12 for transferring little gear 13.In the magnetic switch 7 of the present embodiment, connecting end sub-portion 200A, main contact portion 200B, the first solenoid 30A electromagnetic drive part and the second solenoid 30B electromagnetic drive part are along axle Line direction l7 sequentially configures from rear side towards front side.That is, the magnetic switch 7 of the present embodiment is the first solenoid 30A the first plunger Composition of the central axis tandem configuration of 207 central axis and the second solenoid 30B the second plunger 201 on coaxial.That is, First plunger 207 and the second plunger 201 configure vertically.

First, the second solenoid 30B is illustrated.Second solenoid 30B possesses little gear transfer plunger (the second post Plug) 201, little gear transfer secured core (the second secured core) 202, little gear on coil rack 203 transfer Plunger return spring 205 is used with the transfer of solenoid coil (the second solenoid coil) 30BC, yoke 204 and little gear.

Little gear transfer forms the movable core in the second solenoid 30B with plunger 201, by formed with along central axis l7 Through hole 201H1,201H2,201H3 with jump of direction insertion central part cylindrical member are formed.On through hole 201H1, 201H2,201H3 internal diameter, through-hole section 201H1 internal diameter is maximum, and through-hole section 210H2 internal diameter is less than through-hole section 201H1, through hole Portion 201H3 internal diameter is minimum.Through-hole section 201H1 is arranged on the plunger 201 that outside is projected to from the yoke 204 of magnetic switch 7 End side.Through-hole section 201H3 is arranged in the end side of the inner side of yoke 204.Through-hole section 201H2 is arranged on through-hole section 201H1 Between through-hole section 201H2.

One end inserted with shaft component 201A in through-hole section 210H1, shaft component 201A the other end is from plunger 201 End face 201F project to outside.Shaft component 201A one end formed with wide diameter portion (flange part) 201A1.In shaft component 201A the other end is provided with the holding section 201A2 of the channel-shaped engaged with shift mechanism 12.Shaft component 201A is interspersed in spiral Spring 201B, helical spring 201B one end abut with wide diameter portion 201A1.Helical spring 201B the other end is with being fixed on The back-up ring 201C of the ring-type of through-hole section 201H1 end is abutted.Helical spring 201B is pressed from both sides by wide diameter portion 201A1 and back-up ring 201C Firmly, wide diameter portion 201A1 end face 201A3 is urged to through-hole section 201H1 and through-hole section 201H2 end difference 201H4 side Formula exerts a force to shaft component 201A.

Through-hole section 201H2 and through-hole section 201H3 end difference 201H5 is formed transfers plunger for contact described later The holding section of 207 transfer limitation shaft component 207C engagings.Also, through-hole section 201H2, which is formed, causes insertion through-hole section 201H3's Transfer limitation shaft component 207C can be carried out and the space of the relative displacement of plunger 201 on central axis l7 directions.

Little gear transfer secured core 202 is to attract plunger 201 towards end face (suction surface) 202S by magnetic attracting force Component.Secured core 202 is by annular component structure of the central part formed with the through hole 202A penetrated along central axis l7 directions Into.Transfer limitation shaft component 207C is interspersed in through hole 202A.

In little gear transfer with being provided with little gear transfer plunger return spring between secured core 202 and plunger 201 205, plunger 201 is assigned on central axis l7 directions and returns the plunger 201 moved by magnetic attraction towards secured core 202 The active force in the direction pushed away.Rank on one end of back-moving spring 205 and the end face 202S for being formed at secured core 202 peripheral part Terraced portion 202C is abutted, and the end difference 201D on the peripheral part of rear end of the other end with being formed at plunger 201 is abutted.

Little gear transfer is to cross over the outer circumferential side and little gear of little gear transfer plunger 201 with solenoid coil 30BC Transfer is configured with the mode of the outer circumferential side of the mobile space 206 of plunger 201.Solenoid coil 30BC is coiled in coil rack On 203.In the central part of coil rack 203, formed by the through hole 203A penetrated along central axis l7 directions inner peripheral surface There is mobile space 206.

The peripheral part of secured core 202 and solenoid coil 30BC peripheral part are covered by yoke component 204.Yoke structure Part 204 is made up of the component of the bottomed tube with bottom 204A, in bottom 204A central part formed with for plunger 201 along axle The through hole 204B of line direction insertion.The bottom 204A of yoke component 204 opposite side covers the first solenoid 30A peripheral part, To the peripheral part for reaching contact shell 217.Yoke component 204 also doubles as the first solenoid 30A yoke component, forms magnetic and opens Close 7 case (shell) 7A.

Then, the first solenoid 30A is illustrated.First solenoid 30A possesses contact transfer plunger (the first post Plug) 207, contact transfer with secured core A (the first secured core A) 208 and contact transfer with secured core B (first fix iron Core B) 209, solenoid coil (the first solenoid coil) 30AC of the contact transfer on coil rack 213, yoke 204th, plunger return spring 221 and travelling contact 211 are used in contact transfer.

Contact transfer is made up of with plunger 207 movable core 207A, plunger axis 207B and transfer limitation shaft component 207C. Plunger axis 207B one end (end of the side of plunger 201) is equipped with as other components for being different from plunger axis 207B and formed Movable core 207A.Therefore, movable core 207A central part formed with the through hole penetrated along central axis l7 directions 207AA.In addition, in minor diameter part 207BB of the plunger axis 207B one end formed with formation end difference 207BA.By plunger axis 207B minor diameter part 207BB interts to movable core 207A through hole 207AA, so as to which movable core 207A is assembled in plunger axis On 207B.

In plunger axis 207B one end, end side shape is more being leaned on compared to being equipped with for movable core 207A position Into there is endless groove 207BC, the engagement pawl of the plunger axis 207B sides (rear side) by will be formed in transfer limitation shaft component 207C 207CA is locked to endless groove 207BC, and transfer limitation shaft component 207C is able to link together with plunger axis 207B.Transfer limitation Through hole 207AA of the external diameter than movable core 207A of shaft component 207C especially plunger axis 207B sides internal diameter is big.Therefore, lead to Cross and link transfer limitation shaft component 207C and plunger axis 207B, be able to prevent movable core 207A from taking off from plunger axis 207B Fall.

In the end of the transfer limitation shaft component 207C side of plunger 201 formed with wide diameter portion (flange part) 207CB, pass through expansion Footpath portion 207CB is stuck in the end difference 201H5 of plunger 201, and transfer limitation shaft component 207C obtains relative to the relative displacement of plunger 201 To limitation.If transfer limitation shaft component 207C is limited relative to the relative displacement of plunger 201, comprising with transferring limitation axle The contact transfer plunger 207 for the plunger axis 207B that component 207C links also can not make relative displacement relative to plunger 201 again.Again Person, transfer limitation shaft component 207C in this case or contact transfer are transfer limits with the relative displacement of plunger 207 and plunger 201 Shaft component 207C processed wide diameter portion 207CB is abutted to the displacement in the end difference 201H5 of plunger 201 direction, relative relative to this For displacement, the relative displacement of opposite direction can be carried out.

In the present embodiment, shaft component 207C is limited by transferring, is the feelings below setting in the feeding amount of plunger 201 Under condition, contact transfer is limited in the feeding amount of the first plunger 207 and offseted than travelling contact 211 and fixed contact 212,214 The small size of the feeding amount that connects.Especially in the present embodiment, transfer limitation shaft component 207C is as the feeding amount in plunger 201 Function is played to limit the limiting member of the transfer of contact transfer plunger 207 in the case of below setting.

As described above, transfer limitation shaft component 207C is to link plunger axis 207B or contact transfer plunger 207 and plunger 201 coupling member.

From the end of plunger axis 207B that side opposite with the side of plunger 201 to plunger axis 207B middle part or so formed with Minor diameter part 207BE, minor diameter part 207BE and large-diameter portion 207BF connecting portion formed with end difference 207BD.In minor diameter part The travelling contact 211 of ring-type is provided with 207BE.For travelling contact 211, in minor diameter part 207BE tip side, back-up ring 220 It is embedded to be arranged on the endless groove 207BG being formed on minor diameter part 207BE, so as to prevent travelling contact 211 from plunger axis 207B Come off.

The spring for pushing travelling contact 211 towards back-up ring 220 is provided between travelling contact 211 and end difference 207BD Component 223.In the present embodiment, spring member 223 is made up of helical spring.Travelling contact 211 is and fixed contact 212 and solid The component (conductive member) that fixed juncture 214 electrically connects, the insulation structure of ring-type is provided between back-up ring 220 and travelling contact 211 Part 222A, the insulating component 222B of ring-type is provided between spring member 223 and travelling contact 211.

Contact is provided between the end face of that side opposite with the side of travelling contact 211 of back-up ring 220 and contact shell 217 Plunger return spring 221 is used in transfer.Back-moving spring 221 is that plunger 207 is exerted a force up towards the side of plunger 201 in central axis l7 side Spring member.That is, back-moving spring 221 is towards making the movable core 207A of plunger 207 leave the first secured core A 208 direction Force.

In contact transfer with being provided with the end face relative with movable core 207A end face 207AB on secured core A 208 (magnetic attachment face) 208A and through hole 208B that central part is penetrated along central axis l7 directions.Plunger axis 207B is interspersed in through hole 208B。

Contact transfer is configured to together with contact transfer secured core A208 in central axis with secured core B209 Solenoid coil 30AC is clamped on l7 directions.Formed with cylindrical portion 209A on secured core B209, cylindrical portion 209A from its End face 208A of the inner peripheral side end portion along central axis l7 directions towards secured core A 208 is extended and formed.Cylindrical portion 209A Inner peripheral surface it is relative with movable core 207A outer peripheral face.The outer peripheral face of cylindrical portion 209A inner peripheral surface and movable core 207A supports Connect, work(is played to guide the guide surface of the movement in plunger axis 207B central axis l7 directions as via movable core 207A Energy.

Secured core A208 and secured core B209 is the component that secured core is formed in the first solenoid 30A.It is fixed Iron core A208 forms a part for secured core, secured core B209 structures in the first solenoid 30A in the first solenoid 30A Into a part for secured core.

Yoke 204 is set in a manner of peripheral part and secured core B209 peripheral part across secured core A208. In addition, in secured core B209 and little gear transfer with being provided between secured core 202 and secured core A208, secured core B209 and secured core 202 compare the minimum non-magnetic member 210 of permeability so that the magnetic circuit formed on secured core B209 With the magnetic circuit Magnetic Isolation formed on secured core 202.As non-magnetic member 210, aluminium, resin or rubber etc. can be utilized To form.

As described later, when not being powered to the first solenoid 30A, the spring 221 that is reset of plunger 207 exerts a force, will be movable Iron core 207A end face 207AC abut to non-magnetic member 210 and it is static.Formed by using components such as resin or rubber non- Magnetic component 210, caused impact sound when movable core 207A is abutted can be reduced.Aluminium etc. is being utilized easily in movable core The component of impact sound is produced when 207A is abutted in the case of forming non-magnetic member 210, preferably to make such as rubber, resin or dish The elastic components such as spring, which are situated between, to be stored between non-magnetic member 210 and movable core 207A.

Formed with the through hole 210A that central part is penetrated along central axis l7 directions in non-magnetic member 210.Transfer limitation Shaft component 207C is interspersed in through hole 210A.

Then, main contact portion 200B is illustrated.On contact shell 217, across plunger rod 207B (central axis L7) symmetrical position configuration is fixed with fixed contact 212 and fixed contact 214.When travelling contact 211 is along central axis l7 side To during movement, abutted with 214 liang of sides of fixed contact 212 and fixed contact, so as to which fixed contact 212 and fixed contact 214 is electric Connection.When fixed contact 212 electrically connects with fixed contact 214, starter motor 4 is powered from battery supply 50.

Herein, the assembly method of plunger 201 and plunger 207 is illustrated.Inserted from the through-hole section 201H1 sides of plunger 201 Enter transfer limitation shaft component 207C, shaft component 201A is then inserted into through-hole section 201H1, then inserted helical spring 201B To through-hole section 201H1, and back-up ring 201C is installed.

Spring member 223 is assembled from plunger axis 207B one end, thereafter, according to insulating component 222B, travelling contact 211st, insulating component 222A assembled in sequence is to plunger axis 207.Finally, back-up ring 220 is assembled, prevents spring member 223, insulation structure Part 222B, travelling contact 211 and insulating component 222A come off.Movable core is assembled from plunger axis 207B the other end side 207A, the component of plunger 207 is inserted into the inner side of yoke 204 afterwards, and will be interspersed in the through hole 202A of secured core 202 Transfer limitation shaft component 207C be linked to plunger axis 207B.Furthermore intert by transfer limitation shaft component 207C to fixed iron During the through hole 202A of core 202, back-moving spring 205 is assembled be wound with solenoid coil 30BC coil rack 203 in advance Inner side.

Then, using Fig. 7 to Figure 10, the action to engine starting gear illustrates.Fig. 8 is by the first solenoid 30A is set to obstructed electricity condition, the second solenoid 30B is set to "on" position in the case of magnetic switch 7 sectional view (Fig. 3 VII-VII to regarding section).Fig. 9 is that the first solenoid 30A is set into "on" position, the second solenoid 30B is set into no power The sectional view of magnetic switch 7 in the case of state (Fig. 3 VII-VII is to regarding section).Figure 10 be by the first solenoid 30A and Second solenoid 30B be set to "on" position in the case of magnetic switch 7 sectional view (Fig. 3 VII-VII is to regarding section).

Fig. 7 illustrates the state (obstructed electricity condition) not being powered to the first solenoid 30A and the second solenoid 30B. Hereinafter, Fig. 7 state is referred to as original state to illustrate.

In this condition, the spring 221 that is reset of plunger 207 exerts a force, the movable core 207A and non-magnetic member of plunger 207 210 abut and it is static.In addition, travelling contact 211 is pressed against on back-up ring 220 by spring member 223 across insulating component 222B. Now, the gap L 4 of travelling contact 211 and fixed contact 212 and fixed contact 214 is length La.That is, between under original state Gap L4 length is La.

In addition, movable core 207A end face 207AB and the first secured core A208 end face 208A gap L 5 are length Spend Lb.That is, the length of the gap L 5 under original state is Lb.

The spring 205 that is reset of plunger 201 exerts a force, between the end face 201E of plunger 201 and the end face 202S of secured core 202 Gap L6 is length Lc.That is, the length of the gap L 6 under original state is Lc.

Shaft component 201A is exerted a force by helical spring 201B so that shaft component 201A wide diameter portion 201A1 and the rank of plunger 201 Terraced portion 201H4 is abutted.In addition, plunger 201 is reset, spring 205 exerts a force and is still in transfer limitation shaft component 207C wide diameter portion The position that 207CB engages with end difference 201H5.In this condition, shaft component 201A end face 201A3 and transfer limitation shaft component 207C wide diameter portion 207CB end face 207CC gap L 7 is length Ld.That is, the length of the gap L 7 under original state is Ld.

Furthermore transfer limitation shaft component 207C wide diameter portion 207CB limits the motion of the right into figure of plunger 201, because This plunger 201 will not come off from magnetic switch 7.

Length dimension La, Lb, Lc, Ld are in La ＜ Lb ＜ Ld ＜ Lc relation.

Fig. 8 illustrates the situation that the first solenoid 30A is in obstructed electricity condition, the second solenoid 30B is "on" position.It is logical The second solenoid coil 30BC energizations to the second solenoid 30B are crossed, in plunger 201, the secured core 202 of yoke 204 and second Between produce magnetic flux φ B on the magnetic circuit that circulates.By producing magnetic flux φ B, magnetic attraction acts on the second secured core 202 and plunger Between 201 so that plunger 201 is attracted by the second secured core 202.The end face 201E and second that plunger 201 is illustrated in Fig. 8 is solid The state that the end face 202S of fixed core 202 is abutted.

In this condition, plunger 201 moves the length Lc under the original state of gap L 6.Now, due to original state Under gap L 6 (=Lc) and gap L 7 (=Ld) be in L7 ＜ L6 relation, therefore, shaft component 201A end face 201A3 and shifting Send limitation shaft component 207C end face 207CB to abut, and then transfer is limited into shaft component 207C towards the first secured core 208A sides Push distance (Lc-Ld).As a result, between the end face 208A of movable core 207A end face 207AB and the first secured core 208 Gap L5 is changed into Lb- (Lc-Ld) size.In addition, the gap L 4 of travelling contact 211 and fixed contact 212 and fixed contact 214 It is changed into La- (Lc-Ld) size.In this case, there is Lb ＞ (Lc-Ld) relation, the relation for having La ＞ (Lc-Ld). Further, since La ＜ Lb, therefore, in the state of Fig. 8, the relation in L4 ＜ L5.

In the present embodiment, can in the case where the first solenoid 30A is obstructed electricity condition, the second solenoid 30B energizations The gap L 4 of movable contact 211 and fixed contact 212 and fixed contact 214 is more than zero, travelling contact 211 and fixed contact 212 and Fixed contact 214 does not abut.Thus, if simply the second solenoid 30B is powered, will not be connect by fixed contact 212 and fixation Point 214 carries out the energization to starter motor 4.

Fig. 9 illustrates the situation that the first solenoid 30A is in "on" position, the second solenoid 30B is obstructed electricity condition.It is logical Cross to the first solenoid 30A the first solenoid coil 30AC energization, in the first secured core A208, movable core 207A, the Magnetic flux φ A are produced on the magnetic circuit circulated between one secured core B209 and yoke 204.By producing magnetic flux φ A, magnetic attraction effect Between the first secured core A208 and movable core 207A.

In the present embodiment, in the second solenoid 30B no powers, the feelings that make plunger 201 be moved towards the side of secured core 202 Moving resistance under condition attracts movable core 207A magnetic attraction big than secured core 208.Specifically, by back-moving spring 205 active force is set to attract movable core 207A magnetic attraction big than secured core 208.

Thus, in this condition, plunger 207 and plunger 201 are all failure to actuate and maintain original state (Fig. 7 state).By This, if simply the first solenoid 30A is powered, will not be carried out to starter motor 4 by fixed contact 212 and fixed contact 214 Energization.

Figure 10 illustrates the situation that the first solenoid 30A and the second solenoid 30B is "on" position.By to the first helical Pipe 30A the first solenoid coil 30AC and the second solenoid 30B the second solenoid coil 30BC are powered, in the first helical Magnetic flux φ A (with reference to figure 9) and magnetic flux φ B are produced in pipe 30A and the second solenoid 30B respectively (with reference to figure 8).By producing magnetic flux φ A, magnetic attraction are acted between the first secured core 208 and movable core 207A, and movable core 207A fixes iron by first Core 208 attracts.In addition, by producing magnetic flux φ B, magnetic attraction is acted between the second secured core 202 and plunger 201, post Plug 201 is attracted by the second secured core 202.

As a result, the movement of plunger 201 is abutted untill the end face 202S of the second secured core 202 until its end face 201E.That is, Plunger 201 becomes the state shown in Fig. 8.In this case, the end face 201E of plunger 201 and secured core 202 end face 202S Gap L 6 be zero.

On the other hand, movable core 207A movements are until its end face 207AB is abutted to the first secured core A208 end face Untill 208A.The state is moved up to abutting to the first secured core A208's with movable core 207A since Fig. 8 state State untill the 208A of end face is identical.In this case, movable core 207A end face 207AB and the first secured core A208 End face 208A gap L 5 is zero.

In the state of Figure 10, travelling contact 211 abuts with fixed contact 212 and fixed contact 214, and relative to plunger Bar 207B relative displacements are changed into the position of Lb-La size to insulating component 222A and back-up ring 220 gap L 8.Now, movably Contact 211 is urged to fixed contact 212 and fixed contact 214 by spring member 223, maintains to connect with fixed contact 212 and fixation The state that point 214 abuts.That is, the gap L 4 of travelling contact 211 and fixed contact 212 and fixed contact 214 is zero.

L5=Lb size is bigger than L4=La size.Thereby, it is possible to the model of the stroke L5=Lb in movable core 207A Travelling contact 211 is set reliably to contact fixed contact 212 and fixed contact 214 in enclosing, without higher dimensional accuracy And assembly precision.Further, since magnetic attraction is the end face 207AB by movable core 207A and secured core 208 end face 208S is abutted and born by movable core 207A, therefore the power that travelling contact 211 is subject to is little.Travelling contact 211 along leave gear The direction of circle 220 is pushed back Lb-La distance, is urged to fixed contact 212 by the active force of spring member 223 and fixation connects Point 214.That is, the active force of spring member 223 is set to that travelling contact 211 and fixed contact 212 and fixed contact can be obtained Size needed for 214 electrical connection.

L6=Lc size is bigger than L5=Lb size.Thus, in the end face 201E and secured core 202 of plunger 201 In the state of end face 202S is abutted, movable core 207A can be made to be moved to the position abutted with secured core 208.

Size by the way that L7=Ld size to be set to L6=Lc is subtracted obtained by L5=Lb size more than value, in plunger 201 and plunger 207 be moved respectively in the state of the position that is abutted with secured core 202 and secured core 208, transfer limitation Shaft component 207C no longer abuts with shaft component 201A.In view of the second solenoid 30B quilts when the first solenoid 30A is not driven The state of driving, the size that L7=Ld size is preferably set to L6=Lc are subtracted obtained by L4=La size more than value.Thus, energy Enough prevent merely because the second solenoid 30B action just causes travelling contact 211 and fixed contact 212 and fixed contact 214 Abut this case.In addition, by making L7=Ld size be less than L6=Lc size, the magnetic on axis direction l7 can be avoided Property switch 7 unnecessary maximization.

Starting to engine illustrates.As described above, starter motor 4 is connected to starting as by battery supply 50 The power-on circuit of engine, have by fixed contact 212 and fixed contact 214 power-on circuit that is powered and pass through MOSFET120 is come the power-on circuit that is powered.

First, to battery supply 50 to be connected to the energization of starter motor 4 by fixed contact 212 and fixed contact 214 Circuit illustrates.When ignition switch 60 turns on, ECU70 starts controller 110 at the time point that initialization is completed, and has started The action of motivation control device 3.In addition, ECU70 makes relay 80 at the time point that initialization is completed by the output of signal wire 25 The signal of conducting.In addition, in starter control apparatus 3 upon actuation, pass through 150S pairs of signal wire from controller 110 MOSFET150 grid G output Continuity signal.

By turn-on relay 80, the first solenoid 30A solenoid coil 30AC is powered, by secured core 208, Magnetic flux φ A are produced on the magnetic circuit that movable core 207A, secured core 209 and yoke 204 are formed.On the other hand, conducting is passed through MOSFET150, the second solenoid 30B solenoid coil 30BC is powered, by secured core 202, plunger 201 and yoke Magnetic flux φ B are produced on 204 magnetic circuits formed.

By producing magnetic flux φ B so that plunger 201 is moved to the end face 201E of plunger 201 and the end face of secured core 202 The position that 202S is abutted.Now, the one of the shift mechanism 12 that the holding section 201A2 of the end with being formed at shaft component 201A engages End is pulled, and little gear 13 is pushed out to the position of engagement with ring gear 500A by the other end of shift mechanism 12.It is another Aspect, by producing magnetic flux φ A so that plunger 207 is moved to movable core 207A end face 207AB and secured core 208 The position that end face 208A is abutted.Thus, travelling contact 211 abuts with fixed contact 212 and fixed contact 214, so as to be able to from Battery supply 50 is by fixed contact 212 and fixed contact 214 come supply electric power.Furthermore the starting of starter motor 4 is in small tooth Wheel 13 performs after being engaged with ring gear 500A.

It is defeated to MOSFET120 by signal wire 120S from controller 110 when little gear 13 engages with ring gear 500A Go out Continuity signal.Furthermore Continuity signal in this case is exported in a manner of as the conductance indicated by ECU (Duty). Thus, starter motor 4 is driven, so that little gear 13 rotates.And then the ring gear 500A engaged with little gear 13 turns It is dynamic, so that engine 500 starts.

Herein, it is contemplated that following situation：The state of the original state shown in Fig. 7 is in (not to the first solenoid in plunger 201 The state that 30A and the second solenoid 30B is powered) under, certain obstacle or failure occurs, causes the second solenoid 30B not act. Or contemplate following situation：In the state of not being powered to the second solenoid 30B, relay 80 turns on because of malfunction.

In these cases, the second solenoid 30B will not be acted, and plunger 201 persistently maintains inactive state, therefore, even if Relay 80 is switched on and the first solenoid 30A is powered, and is limited to the transfer limitation shaft component 207C of plunger 201 Also the movement of plunger 207 can be hindered.Therefore, plunger 207 can not be towards making travelling contact 211 and fixed contact 212 and fixed contact 214 abut and the movement of the direction (being right side in Figure 10) of circuit-closing contacts 212 and 214.

In order to realize the action, in the present embodiment, plunger 201 is towards secured core when making the second solenoid 30B no powers Moving resistance in the case that 202 sides are moved attracts movable core 207A magnetic attraction big than secured core 208.It is specific and Speech, the active force of back-moving spring 205 is set to attract movable core 207A magnetic attraction big than secured core 208.

Thus, even if being powered in the second solenoid 30B no powers to the first solenoid 30A, the movement of plunger 207 Also can be limited by plunger 201, plunger 207 can not be towards direction (being right side in Figure 10) movement of circuit-closing contacts 212 and 214.Therefore, The energization to starter motor 4 will not be carried out by contact 212 and 214.Thereby, it is possible to will little gear 13 be not pushed out to ring This case of starter motor 4 is driven to be preventive from possible trouble in the state of the shape gear 500A position of engagement.

In the present embodiment, the first solenoid 30A and the second solenoid 30B is in a manner of adjacent on axis direction l7 Configuration.Also, it is that the first solenoid 30A solenoid 30B of secured core 209 and second secured core 202 is configured as pole Structure closely.In the present embodiment, by being arranged between the secured core 209 of point blank and secured core 202 Nonmagnetic material 210 is set, the magnetic circuit of the first solenoid 30A magnetic circuit and the second solenoid 30B is separated.Also one can be utilized Individual component forms secured core 209 and secured core 202.

Then, using Figure 11, coil rack 103 and coil rack 213 are illustrated.Figure 11 is the spiral shell of enlarged representation first Sectional view (the XI-XI sectional views shown in Fig. 3) near spool coil 30AC and the second solenoid coil 30BC.

First solenoid coil 30AC is wound onto on coil rack 203 and is housed in the case 7A's of magnetic switch 7 Inner side.Second solenoid coil 30BC is wound onto on coil rack 213 and is housed in the interior of the case 7A of magnetic switch 7 Side.Coil rack 203 configures with coil rack 213 along central axis l7 directions tandem.

On secured core 202, the position roughly the same with solenoid coil 30BC inner circumferential is formed in the radial direction There is the through hole 202B penetrated along central axis l7 directions.In addition, the outer circumferential side in secured core B209 cylindrical portion 209A is formed There is the through hole 209C penetrated along central axis l7 directions.In addition, non-magnetic member 210 through hole 210A outer circumferential side formed with The through hole 210B penetrated along central axis l7 directions.In contact transfer with secured core A208, in through hole 208B outer circumferential side It is provided with the through hole 208C penetrated along central axis l7 directions.

First solenoid coil 30AC lead-out wire is drawn to the sky for being configured with travelling contact 211 through through hole 208C Between 230.Second solenoid coil 30BC lead-out wire through through hole 202B, through hole 209C, through hole 210B and through hole 208C and by Lead to the space 230 for being configured with travelling contact 211.The first solenoid coil is drawn therefore, being provided with coil rack 213 30AC the first solenoid coil lead division 213B and the second solenoid coil lead division for drawing the second solenoid coil 30BC 213A.First solenoid coil lead division 213B and the second solenoid coil lead division 213A is interspersed in the logical of secured core A208 In the 208C of hole.In addition, the second solenoid coil lead division 213A is interspersed in secured core B209 through hole 208C.

First solenoid coil lead division 213B and the second solenoid coil lead division 213A clip plunger 207 in post respectively The both sides of plug 207 are each provided with one.Terminal 231A, 231B are provided with coil rack 213.Terminal 231A, 231B are set Put between the first solenoid coil lead division 213B and the second solenoid coil lead division 213A.Plunger 207 is clipped in plunger 207 side sets terminal 231A, and terminal 231B is set in opposite side.It is connected with terminal 231A from the first neighbouring helical The lead-out wire for the first solenoid coil 30AC that pipeline circle lead division 213B is drawn.First the another of solenoid coil 30AC draws Outlet electrically connects with secured core 208.It is connected with from the second neighbouring solenoid coil lead division 213A and draws on terminal 231B The the second solenoid coil 30BC gone out a lead-out wire.Second solenoid coil 30BC another lead-out wire and secured core 208 Electrical connection.

Terminal 231A projects to space 230, and its top ends electrically connects with terminal 17.Terminal 231B projects to space 230, its Top ends electrically connect with solenoid connection terminal 15S.

In the present embodiment, by by the first solenoid coil lead division 213B and the second solenoid coil lead division 213A Intert to through hole 208C and intert the second solenoid coil lead division 213A to through hole 208C, can simply assemble first Solenoid coil 30AC and its lead-out wire, the second solenoid coil 30BC and its lead-out wire, secured core 202, non-magnetic member 210th, secured core B209 and secured core A208.That is, by from the first solenoid coil 30AC winder along central shaft The the first solenoid coil lead division 213B and the second solenoid coil lead division 213A that line l7 directions protrude, can be fixed Iron core 202, non-magnetic member 210, the positioning in secured core B209 and secured core A208 circumference, so that assembling Operating efficiency improves.

Furthermore the present invention includes various modifications example, is not limited to above-described embodiment.For example, above-described embodiment be in order to The detailed description for being illustrated the present invention in a manner of understandable and being made, is not necessarily defined in and possesses all compositions.Furthermore, it is possible to The addition, deletion, replacement of other compositions are carried out to a part for the composition of embodiment.

Symbol description

1 ... engine starting gear, 2 ... gear covers, 2A ... cylindrical portions, 2B ... screw forming portions, 3 ... starters control dress Put, the shell of 3A ... starter control apparatus, 3B ... run through bolt linking part (flange portion), 3B' ... bolts fastening part, 4 ... rise Dynamic motor, 4A ... cases (yoke), the rotating shaft of 4B ... starter motors 4,5 ... installation portions, 5A ... bolt insertion holes, 6 ... bonnets, 6A ... run through bolt breakthrough part (flange portion), 6A' ... bolts fastening part, 7 ... magnetic switch, the case of 7A ... magnetic switch 7, 7AB ... cases 7A back end surface, 8 ... magnetic switch installation portions, 9 ... run through bolt, 10 ... one-way clutch, 11 ... rotate biography Sensor, the connector of 11A ... rotation sensors, 12 ... shift mechanisms, 13 ... little gears, 15B ... cell connection terminals, 15M ... Motor connection terminal, 15S ... solenoid connection terminals, 17 ... terminals, 18 ... terminals, 19 ... terminals, 20B, 20M, 20S ... bus (wiring part), the bending section of 20C ... buses, 22 ... wirning harnesses, 23 ... distribution parts, 24 ... wirning harnesses, 25 ... signal wires, 28B, 28M, 28S ... nut, 29 ... bolts, 30 ... solenoids, the solenoids of 30A ... first, 30AC ... contact transfer solenoid coils Solenoid coil (the second line solenoid is used in (the first solenoid coil), the solenoids of 30B ... second, the transfer of 30BC ... little gears Circle), 31 ... noumenally, 50 ... battery supplies, 60 ... ignition switches, 70 ... engine control system (control unit of engine： ECU), 80 ... relays, 101 ... terminals, 102 ... terminals, 103 ... terminals, 104 ... connectors, 105 ... terminals, 110 ... controls Device (ASIC), 120 ... switch elements (MOSFET), 150 ... switch elements (MOSFET), 120S ... signal wires, 130 ... two poles Pipe, 150S ... signal wires, 170 ... capacitors, 160 ... diodes, 200A ... connecting end sub-portions, 200B ... main contacts portion, 201 ... Little gear transfer plunger (the second plunger), 201A ... shaft components, 201A1 ... shaft components 201A wide diameter portion (flange part), 201A2 ... and shift mechanism 12 holding section, 201A3 ... end faces, 201B ... helical springs, 201C ... back-up rings, 201D ... ladders Portion, 201E ... end faces, 201H1,201H2,201H3 ... through-hole section, 201H4,201H5 ... end difference, the transfer of 202 ... little gears are used Secured core (the second secured core), 202A, 202B ... through hole, 202C ... end differences, the fixed iron of 202S ... little gears transfer The end face (suction surface) of core 202,203 ... coil racks, 203A ... through holes, 204 ... yokes, the bottom of 204A ... yokes component 204 Portion, 205 ... little gears transfer plunger return spring, 206 ... the little gears transfer mobile space of plunger 201,207 ... contacts Transfer plunger, 207A ... movable cores, 207AA ... through holes, 207AB ... end faces, 207B ... plunger axis, 207BA ... end differences, 207BB ... minor diameter parts, 207BC ... endless grooves, 207BD ... end differences, 207BE ... minor diameter parts, 207BF ... large-diameter portions, 207BG ... Endless groove, 207C ... transfer limitation shaft components, 207CA ... engagement pawl, 207CB ... wide diameter portions (flange part), the transfer of 208 ... contacts With secured core A (the first secured core A), 208A ... end faces, 208B, 208C ... through hole, 209 ... contact transfer secured cores B (the first secured core B), 209A ... cylindrical portions, 209B ... inner peripheral surfaces, 209C ... through holes, 210 ... non-magnetic members, 210A, 210B ... through holes, 211 ... travelling contacts, 212 ... fixed contacts, 213 ... coil racks, the solenoid coils of 213A ... second are drawn Portion, 213B ... the first solenoid coil lead divisions, 214 ... fixed contacts, 217 ... contact shells, 220 ... back-up rings, 221 ... contacts Plunger return spring, 222A, 222B ... insulating component, 223 ... spring members, 500 ... engines, 500A ... annular tooths are used in transfer Wheel.

Claims (11)

1. a kind of electromagnetic switch, it has：Fixed contact, it is fixed on shell；Travelling contact, it is configured to and institute State fixed contact abutting；First plunger, it transfers the travelling contact towards the fixed contact；And second plunger, it is moved The little gear being arranged on engine starting gear is sent, the electromagnetic switch is characterised by,

Second plunger feeding amount for below setting in the case of, the transfer of first plunger is restricted.

2. electromagnetic switch according to claim 1, it is characterised in that

Possess：First solenoid, it makes magnetic attraction act on first plunger and transfer first plunger；Second helical Pipe, it makes magnetic attraction act on second plunger and transfer second plunger；And coupling member, it makes described first Plunger interlocks with second plunger,

First plunger and second plunger are configured vertically,

By second plunger towards the first plunger side move when suffered Resistance Setting must be than first plunger from institute It is big to state the magnetic attraction that the first solenoid is subject to.

3. electromagnetic switch according to claim 1, it is characterised in that

The limitation of the transfer of first plunger is carried out by electric switch.

4. electromagnetic switch according to claim 3, it is characterised in that

The electric switch is the switch for the described second solenoidal energization that second plunger is transferred in control.

5. a kind of engine starting gear, it is characterised in that possess：Starter motor；Little gear, it is subject to by the starter motor Rotate driving；And shift mechanism, it transfers the little gear, and possesses according to any one of claim 1 to 4 Electromagnetic switch is used as the mechanism that docking point is opened and closed, and the contact, which is arranged at, to be gone on the power-on circuit of the starter motor.

6. a kind of engine starting gear, it is characterised in that possess：Starter motor；Little gear, it is subject to by the starter motor Rotate driving；Shift mechanism, it transfers the little gear；And magnetic switch, it has described in the first solenoid and driving Second solenoid of shift mechanism, first solenoid enter to the contact being arranged on the power-on circuit for going to the starter motor Row opening and closing,

First solenoid has the first secured core, the first plunger and the first solenoid coil, is configured to：By to described The energization of first solenoid coil, magnetic attraction is set to act on towards that side opposite with the first secured core side described in exerting a force First plunger, first plunger is attracted to the first secured core side,

Second solenoid has the second secured core, the second plunger and the second solenoid coil, is configured to：By to described The energization of second solenoid coil, magnetic attraction is set to act on towards that side opposite with the second secured core side described in exerting a force Second plunger, second plunger is attracted to the second secured core side,

First solenoid and second solenoid are configured to the drive along first plunger and second plunger Dynamic direction configuration, and as caused by first secured core to the magnetic attraction of first plunger with being consolidated by described second It is identical to the direction of the magnetic attraction of second plunger caused by fixed core,

It is provided with coupling member, the coupling member links with second plunger, to limit first plunger towards described The displacement of first secured core side,

Second plunger is set to be acted on towards the moving resistance of the second secured core side than first secured core described The magnetic attraction of first plunger is big.

7. engine starting gear according to claim 6, it is characterised in that it is solid to possess first electrically connected with mains side Fixed juncture and the second fixed contact electrically connected with the starter motor side,

First solenoid possesses movable core in the one end of first plunger, and possess in the other end with it is described First fixed contact and the relative travelling contact of second fixed contact.

8. engine starting gear according to claim 7, it is characterised in that

It is described movable relative to being formed in the state of not being powered to first solenoid and second solenoid For gap L 4 between contact and first fixed contact and second fixed contact, it is formed at described first and fixes iron Gap L 5 between core and the movable core is larger.

9. engine starting gear according to claim 8, it is characterised in that

Second plunger has：First hole portion, it is in the end face of that side opposite with the end face of the second secured core side Opening, and set in the axial direction；Second hole portion, it is formed as diameter and is less than first hole portion；And the 3rd hole portion, its shape It is less than first hole portion as diameter, is penetrated in the bottom surface opening of second hole portion to the second secured core side The end face, and second plunger possesses shaft component, and the one end of the shaft component is inserted into first hole portion, The other end is provided with the holding section engaged with the shift mechanism,

The coupling member is configured to：The end of one end and first plunger links, in the other end formed with wide diameter portion, And the wide diameter portion is inserted into second hole portion, and the wide diameter portion is limited to second hole portion and the described 3rd The end difference of hole portion.

10. engine starting gear according to claim 9, it is characterised in that

Described the other end of the coupling member limits axle by abutting to the end face of the one end of the shaft component The movement in line direction,

Abutted in the shaft component with the end difference of first hole portion and second hole portion, the wide diameter portion is limited to institute The second hole portion is stated with the state of the end difference of the 3rd hole portion, being formed at described the other end and the institute of the coupling member State when the length L7 ratios in the gap between the end face of shaft component are not powered to second solenoid and be formed at described second The length L6 in the gap between the end face and the second secured core side of the second secured core side of plunger is small.

11. engine starting gear according to claim 10, it is characterised in that

It is smaller than the length L7 in the gap that the length L6 in the gap subtracts length obtained by the length L4 in the gap.