CN103854927A - Vehicle starter and electromagnetic switch thereof - Google Patents
Vehicle starter and electromagnetic switch thereof Download PDFInfo
- Publication number
- CN103854927A CN103854927A CN201210513278.XA CN201210513278A CN103854927A CN 103854927 A CN103854927 A CN 103854927A CN 201210513278 A CN201210513278 A CN 201210513278A CN 103854927 A CN103854927 A CN 103854927A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic switch
- pushes against
- against sleeve
- moving
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Electromagnets (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a vehicle starter and an electromagnetic switch thereof. The electromagnetic switch comprises a push and press sleeve device which can penetrate through a fixed iron core in a sliding mode, wherein the push and press sleeve device is provided with a first end and a second end opposite to the first end, the first end is close to a wiring post, and a contact bridge can be arranged at the first end of the push and press sleeve device in a sliding mode. The push and press sleeve device is arranged in the mode that after the electromagnetic switch is powered on, the push and press sleeve device moves in the direction of the wiring post, so that the contact bridge is driven to make contact with the wiring post, and the first end of the push and press sleeve device gets away from the contact bridge by a certain distance; after the electromagnetic switch is powered off, in the process that the push and press sleeve device moves in the direction away from the wiring post under the action of a first return spring, the first end of the push and press sleeve device makes contact with the contact bridge. The electromagnetic switch can rapidly separate the contact bridge from the wiring post after an engine is started. The vehicle starter comprises a direct current motor, a transmission mechanism and the electromagnetic switch.
Description
Technical field
The present invention relates to a kind of electromagnetic switch using in vehicle starter, and relate to the vehicle starter that comprises this electromagnetic switch.
Background technology
Starter uses in vehicle, is used for starting the engine of vehicle.Starter generally comprises DC motor, transmission mechanism and controlling organization.The controlling organization of normally used starter is electromagnetic switch, and it is easy to use, dependable performance.
Fig. 1 illustrates a kind of structural representation of electromagnetic switch of starter.As shown in Figure 1, this electromagnetic switch mainly comprises: housing 2; Two binding posts 10 that carried by the cap 8 being fixed on housing 2; Hard-wired fixed iron core 4 and solenoid 6; Can move axially and be arranged on the push rod 12 in fixed iron core 4; Be arranged on the contact bridge 14 of push rod 12 front ends; Can axially movable moving core 16; And the pull bar 18 being fixedly connected with moving core 16.
In the time that ignition switch is activated, solenoid 6 is powered, to produce the electromagnetic force that acts on moving core 16.Moving core 16 drives pull bar 18 to move towards fixed iron core 4.The left part of pull bar 18 pulls the transmission mechanism of starter by shift fork (not shown), so that the direction of the gear ring of the driven wheel that the DC motor of starter drives on engine flywheel moves.At pull bar 18, after (towards the direction of binding post 10) moves to and touch push rod 12 to the right, the right part of pull bar 18 will promote the left part of push rod 12, and then promote contact bridge 14 and move to contact two binding posts 10, finally connect the main circuit of DC motor.Now, the driven wheel that DC motor drives engages with the gear ring on engine flywheel.Correspondingly, rotatablely moving of DC motor is passed to the flywheel of engine, drives the crankshaft rotating of engine, thus the engine of starting vehicle.
After engine start, ignition switch is released, and the electromagnetic force that solenoid 6 acts on moving core 16 disappears.Moving core 16 together with pull bar 18 under the effect of back-moving spring left (away from the direction of binding post 10) mobile, and by shift fork, driven wheel is pulled to the gear ring being separated from engine flywheel.Meanwhile, being arranged under the effect of the back-moving spring in lid 8, push rod 12 is also moved to the left, and drives contact bridge 14 to be separated from two binding posts 10.In this way, the main circuit of DC motor is disconnected, and DC motor shuts down.
In the starting process of engine, very high electric current (for example peak current can reach 1500-2500A) will flow through contact bridge 14 and binding post 10.After engine is realized starting, for example, if can not be rapidly contact bridge 14 be disconnected to (due to contact bridge 14 be welding in binding post 10 together with) from binding post 10, above-mentioned very high electric current has the DC motor that makes starter the danger of being burnt.
And in the starting process of engine, the contact part between contact bridge 14 and binding post 10 all can come in contact weldering under many circumstances.In the time that the contact part between contact bridge 14 and binding post 10 comes in contact weldering, only rely on the effect that is arranged at the back-moving spring in lid 8, will be difficult to contact bridge 14 to leave from binding post 10 punishment.
Therefore, very expect to provide a kind of electromagnetic switch of starter, it can disconnect contact bridge rapidly after the starting of engine from binding post punishment.
Summary of the invention
One aspect of the present invention is to provide a kind of electromagnetic switch for vehicle starter, and it can prevent the generation of above-mentioned phenomenon.
According to an aspect of the present invention, the invention discloses a kind of electromagnetic switch for vehicle starter, comprising: fixed iron core; Be positioned at fixed iron core left side and can towards with the moving core moving away from fixed iron core; Solenoid, for generation of the electromagnetic force moving towards fixed iron core unshakable in one's determination that innervates; Be located at a pairs of posts at the right side place of fixed iron core; It is characterized in that, electromagnetic switch is also provided with: through the pushes against sleeve device of fixed iron core, it has the first end of close binding post and second end contrary with first end, and contact bridge is installed slidably on its first end slidably; And first back-moving spring, it is along applying active force in pushes against sleeve device away from the direction of binding post; Pushes against sleeve device is set up as follows: after electromagnetic switch energising, pushes against sleeve device moves towards binding post direction, and to drive contact bridge to touch binding post, and the first end of pushes against sleeve device is separated from contact bridge one segment distance; After electromagnetic switch power-off, along with move away from the direction of binding post on pushes against sleeve device edge under the effect of the first back-moving spring, the first end of pushes against sleeve device collides contact bridge.
Preferably, described pushes against sleeve device comprises outer pushes against sleeve and the interior pushing member that is slidably disposed on outer pushes against sleeve inner side; Interior pushing member is provided with radially outward projection at one end place near binding post, and it is separated from contact bridge one segment distance after electromagnetic switch energising, and clashes into contact bridge after electromagnetic switch power-off.
Preferably, described the first back-moving spring is resisted against between second end and fixed iron core of outside projection of pushes against sleeve device, and arranges around pushes against sleeve device.
Preferably, outer pushes against sleeve and interior pushing member are respectively arranged with the radially outward projection that can mutually abut against at one end place away from binding post.
Preferably, described interior pushing member is interior pushes against sleeve; Described electromagnetic switch is also provided with the connecting rod that runs through interior pushes against sleeve and can slide therein, connecting rod comprises radial outside and the first end of close binding post and the second contrary end that can project into interior pushes against sleeve, and be configured to along with moving core moves away from fixed iron core, the first end of connecting rod collides one end of the close binding post of interior pushes against sleeve.
Preferably, the second end of connecting rod is arranged in the through hole of moving core, and the first end of connecting rod and the second end have respectively radially outward projection, and the inwall of the through hole of moving core is formed with radially inwardly projection; Described connecting rod is set up as follows: in the process moving away from fixed iron core at moving core, the radially inside projection of moving core collides the radially outward projection of the second end of connecting rod, and/or the radially outward projection of the first end of connecting rod collides one end of the close binding post of interior pushes against sleeve.
Preferably, in the through hole of moving core, be fixed with cylindrical member, the bottom, right side of cylindrical member has through hole; Can run through the through hole by cylindrical member thereby the size of the first end of connecting rod is less than the size of the through hole of cylindrical member, the size of the second end of connecting rod is greater than the size of the through hole of cylindrical member.
Preferably, be equipped with the second back-moving spring in the through hole of moving core, it abuts against respectively the right-hand end of moving core and the second end of pushes against sleeve device.
Preferably, described electromagnetic switch comprises control circuit, and described control circuit is provided with the discharge device being connected in parallel with solenoid; Described discharge device is access in the control circuit of electromagnetic switch as follows: in the time that electromagnetic switch is switched on, described discharge device is in off state; In the time of electromagnetic switch power-off, described discharge device is in conducting state, to form closed circuit with solenoid.
Preferably, solenoid comprises hold-in winding and engagement coil, and both winding directions are contrary, and the number of ampere turns of hold-in winding is much larger than the number of ampere turns of engagement coil; Described discharge device is in parallel and is connected with hold-in winding.
Preferably, described discharge device is power tube or the switch electronic device that diode, triode or other have the reverse cutoff function of one-way conduction.
In addition, the invention also discloses a kind of vehicle starter, comprising: DC motor; The transmission mechanism being connected with the output shaft of motor; And foregoing electromagnetic switch, it controls the operation of described DC motor and transmission mechanism.
As useful technique effect of the present invention, after the starting of engine, contact bridge can disconnect from binding post punishment rapidly, thereby avoids the DC motor of starter to be burnt.
Brief description of the drawings
In the accompanying drawings:
Fig. 1 is a kind of structural representation of the existing electromagnetic switch for vehicle starter.
Fig. 2 is the structural representation of the electromagnetic switch of vehicle starter according to the preferred embodiment of the present invention.
Fig. 2 a is the structural representation of the outer pushes against sleeve of the pushes against sleeve device shown in Fig. 2.
Fig. 2 b is the structural representation of the interior pushing member of the pushes against sleeve device shown in Fig. 2.
Fig. 2 c is mounted in the structural representation of the connecting rod in pushes against sleeve device.
Fig. 3 is the circuit diagram according to starter of the present invention.
Fig. 4 a shown in ignition switch be activated, contact bridge 14 touches the state after binding post 8.
Fig. 4 b has shown after ignition switch is released, the state of interior pushes against sleeve 12b while colliding contact bridge 14.
Embodiment
Below with reference to accompanying drawing, embodiments of the invention are described in further detail.In each accompanying drawing, identical Reference numeral is used for representing same or analogous parts.Unless described especially, " to the right " or " forward " refers to towards the direction of fixed iron core and binding post or a side, and " left " or " backward " refers to the direction or the side that deviate from fixed iron core and binding post.
Fig. 2 is that the electromagnetic switch shown in it is in non-operating state according to the present invention, for the structural representation of the electromagnetic switch of vehicle starter.
As shown in Figure 2, electromagnetic switch according to the present invention comprises: housing 2, moving core 16, be fixedly attached to pull bar 10 and cylindrical member 18 on moving core 16, lid 20, be fixedly attached to two binding posts 8 on lid 20, be fixed to the fixed iron core 4 on housing 2, can axially movably be arranged on the connecting rod 22 in fixed iron core 4, install and extend to the pushes against sleeve device 12 in fixed iron core 4 around connecting rod 22 peripheries, be arranged on the mount pad 28 in the right side recess of fixed iron core 4, utilize mount pad 28 to be clamped in the contact bridge 14 of connecting rod 22 rear end, and the first back-moving spring 24a for contact bridge 14 and moving core 16 are resetted, the 3rd back-moving spring 24b, the second back-moving spring 24c.
Illustrate the structure according to electromagnetic switch of the present invention below with reference to accompanying drawing 2.Comprise housing 2 and be installed to the cap 20 on housing 2 according to the body part of electromagnetic switch of the present invention, wherein two binding posts 8 are fixedly installed on cap 20.Fixed iron core 4 and solenoid 6 are fixedly secured in housing 2.Under the electromagnetic force of solenoid 6, moving core 16 can move forward and backward in electromagnetic switch.
As shown in Figure 2, fixed iron core 4 is arranged on the rear portion of the housing 2 of electromagnetic switch, and is preferably integrally formed single-piece.Fixed iron core 4 comprise the large diameter portion that is fixed in housing 2, from the rearwardly projecting path part of large diameter portion and from the rearwardly projecting roughly truncated cone shape of path part overhang 4a(also referred to as leftmost side part).Fixed iron core 4 has the rearward end 4b that is positioned at its right side, and is formed with recess in the rearward end 4b of fixed iron core 4.In fixed iron core 4, be also formed with the guide through hole 4c connecting along the fore-and-aft direction of electromagnetic switch.
Pushes against sleeve device 12 is installed slidably in the guide through hole 4c of fixed iron core 4.Pushes against sleeve device 12 comprises shorter outer pushes against sleeve 12a and is slidably mounted in the long interior pushing member 12b in outer pushes against sleeve 12a, respectively as shown in Fig. 2 a, 2b.Preferably, interior pushing member 12b is an interior pushes against sleeve.Outer pushes against sleeve 12a has through hole 12a1 and left part 12a2.The left part of outer pushes against sleeve 12a is also provided with radially outward projection 12a3.But the left end of outer pushes against sleeve 12a does not arrange radially outward projection 12a3 alternatively.
Interior pushes against sleeve 12b comprises interior pushes against sleeve main body 12b1, is positioned at radially outward projection 12b2 and the through hole 12b3 in pushes against sleeve main body 12b1 left side.Interior pushes against sleeve 12b can be inserted into the line slip of going forward side by side in the through hole 12a1 of outer pushes against sleeve 12a, to make the radially outward projection 12b2 contact of interior pushes against sleeve 12b and to abut against the left part 12a2 of outer pushes against sleeve 12a.
At left side and the specifically outer pushes against sleeve 12a of pushes against sleeve device 12 of pushes against sleeve device 12(of mount pad 28) right side between be provided with the first back-moving spring 24a.Described the first back-moving spring 24a is arranged in the guide through hole 4c of fixed iron core 4 simultaneously.Pushes against sleeve 12a does not have in the situation of projection 12a3 radially outward outside, and the first back-moving spring 24a will directly abut against the radially outward projection 12b2 of interior pushes against sleeve 12b and the overhang 4a of fixed iron core 4.
The 3rd back-moving spring 24b is around the specifically outer pushes against sleeve 12a of pushes against sleeve device 12 of pushes against sleeve device 12() outer peripheral portion install, and abut against the radially outward projection 12a3 of outer pushes against sleeve 12a and the overhang 4a of fixed iron core 4.
Moving core 16 is can axially movable mode to be arranged in the roughly rear portion of housing 2.This moving core 16 is roughly cylindrical, and its inside is formed with to front that path is installed through hole 16a, diameter is greater than path the accommodating through hole 16b in large footpath of through hole 16a and the general conical recessed portion 16c that shape matches with the overhang 4a of fixed iron core 4 are installed from rear successively.Under the electromagnetic force of solenoid 6, moving core 16 moves to the right, matches with the overhang 4a of fixed iron core 4 with the recessed portion 16c that makes moving core 16.
At the path of moving core 16, through hole 16a place is installed and is provided with regularly elongated cylindrical member 18.Meanwhile, in the accommodating through hole 16b in the large footpath of moving core 16, be provided with the second back-moving spring 24c that spring constant is larger.Two ends of the second back-moving spring 24c are contacting respectively path interface between through hole 16a and the large accommodating through hole 16b in footpath and the left part of pushes against sleeve device 12 are being installed.Optionally, cylindrical member 18 can be towards the certain size of right side projection, to make the peripheral part of the second back-moving spring 24c round cylindrical member 18.As shown in Figure 2, cylindrical member 18 has bottom, right side 18a, and it is provided with through hole.
As shown in Figure 2 c, electromagnetic switch according to the present invention comprises the connecting rod 22 that can slide in pushes against sleeve device 12.Connecting rod 22 comprises the second end 22a, con-rod only 22c and is positioned at the first end 22b of the second end opposition side.The second end 22a of connecting rod 22 has outwards outstanding large footpath projection 22a1.The size of the large footpath projection 22a1 of the second end 22a of connecting rod 22 is greater than the size of the through hole of bottom, the right side 18a of cylindrical member 18, thereby the second end 22a of connecting rod 22 cannot be through the through hole of bottom, the right side 18a of cylindrical member 18.But the con-rod only 22c of connecting rod 22 and the size of first end 22b are less than the size of the through hole of bottom, the right side 18a of cylindrical member 18, thereby can be inserted in interior pushes against sleeve 12b through the through hole of bottom, the right side 18a of cylindrical member 18.
As shown in Figure 2, connecting rod 22 not only runs through by fixed iron core 4 and pushes against sleeve device 12, but also runs through the outside that extends to mount pad 28 and contact bridge 14.
The right part of mount pad 28 is provided with contact bridge 14.Mount pad 28 and contact bridge 14 are subject to the pushing force forward that the first back-moving spring 24a applies.In the time of assembling electromagnetic switch of the present invention, the first end 22b of connecting rod 22 passes the through hole of bottom, the right side 18a of cylindrical member 18 from the left side of moving core 16, connect through pushes against sleeve device 12, from mount pad 28, contact bridge 14 projections out.Then, on the right side of the first end 22b of connecting rod 22, metallic gasket and insulation spacer are set.
After the pad projection out on mount pad 28, contact bridge 14 and right side thereof, form radially outward projection at the first end 22b place of connecting rod 22 at the first end 22b of connecting rod 22, can prevent that like this connecting rod 22 from departing from from pushes against sleeve device 12.Described radially outward projection can be for example the collar, the clamp nut that are fixedly attached to the first end 22b place of connecting rod 22, run through pin.Described radially outward projection can be that first end 22b is carried out to the modification flat head forming after spinning operation, also can be at the first end 22b place of connecting rod 22 weld metal piece with projection radially outward described in forming.
Similarly, in the time of assembling electromagnetic switch of the present invention, pushes against sleeve device 12 reaches in fixed iron core 4, and the right part of interior pushes against sleeve 12b (first end) projects into the outside of mount pad 28, contact bridge 14.Right part at interior pushes against sleeve 12b also forms similarly radially outward projection.Described radially outward projection can be for example the collar, the clamp nut that are connected to the right part place of interior pushes against sleeve 12b, run through pin etc., can be also to operate in by flange the outer flanging that the right part place of interior pushes against sleeve 12b forms, as shown in Figure 2 b.
To illustrate according to the assembling process of electromagnetic switch of the present invention below.First, first solenoid 6 and fixed iron core 4 are arranged in housing 2; Then,, by pushes against sleeve device 12, together with the first back-moving spring 24a and the 3rd back-moving spring 24b of installation in position, insert from left side in the guide through hole 4c of fixed iron core 4, until the interior pushes against sleeve 12b of pushes against sleeve device 12 stretches out fixed iron core 4; Secondly, mount pad 28 and contact bridge 14 are arranged on to the right part of the interior pushes against sleeve 12b of pushes against sleeve device 12; Place the second back-moving spring 24c in the right side of moving core 16 and the left side of pushes against sleeve device 12, make connecting rod 22 through moving core 16 and cylindrical member 18; Connecting rod 22 and moving core 16 are placed in electromagnetic switch from the left side of electromagnetic switch, and promote moving core 16, and the first end 22b of connecting rod 22 stretches out mount pad 28 and contact bridge 14; Promote moving core 16 and cylindrical member 18 to the right, promote mount pad 28 and contact bridge 14 left, to make first, second, third back-moving spring 24a, 24c, 24b in predetermined impaction state simultaneously; Finally, make the right part of interior pushes against sleeve 12b and the first end 22b of connecting rod 22 form respectively radially projection.
Below introduce the operating process according to electromagnetic switch of the present invention.Fig. 4 a shown in ignition switch be activated, contact bridge 14 touches the state after binding post 8.Fig. 4 b has shown after ignition switch is released, the state of interior pushes against sleeve 12b while colliding contact bridge 14.
Before ignition switch is activated, electromagnetic switch is in the state shown in Fig. 2 (be electromagnetic switch in off-position time).In the time that solenoid 6 is powered, produce the electromagnetic force that acts on moving core 16.Under the effect of electromagnetic force, moving core 16 drive cylindrical member 18 towards fixed iron core 4(towards the right side of Fig. 2) mobile, further pushing the second back-moving spring 24c simultaneously.The second back-moving spring 24c after being squeezed acts on pushes against sleeve device 12.Pushes against sleeve device 12 moves towards fixed iron core 4 after stressed, and is pushing the first back-moving spring 24a, the 3rd back-moving spring 24b.The first back-moving spring 24a after being squeezed acts on mount pad 28 and contact bridge 14, makes mount pad 28 and contact bridge 14 along moving towards the direction of binding post 8.
In the process moving towards the direction of binding post 8 at contact bridge 14, the rear end (being positioned at the left side of Fig. 2) of the pull bar 10 being fixedly connected with moving core 16 pulls the transmission mechanism of starter by shift fork (not shown), so that the gear ring of driven wheel on engine flywheel moves.
After contact bridge 14 starts to touch two binding posts 8, moving core 16 continues mobile, until bottom, the right side of the cylindrical member 18 of moving core 16 18a abuts against the left end (the specifically left end of the interior pushes against sleeve 12b of pushes against sleeve device 12) of pushes against sleeve device 12.The first end 22b of the right radial projection drivening rod 22 of interior pushes against sleeve 12b is separated from mount pad 28, contact disc 14, as shown in Fig. 4 a.Like this, between contact bridge 14 and binding post 8, realize close contact, thereby connected the circuit of the DC motor of starter.
In the process moving right at moving core 16, the driven wheel that the direct current machine of starter drives engages with the gear ring on engine flywheel, thus rotatablely moving of motor is delivered to engine flywheel, to pilot engine.
After engine is realized starting, ignition switch is released (being that electromagnetic switch is in the time of closure state), and the electromagnetic force that solenoid 6 acts on moving core 16 disappears.Moving core 16 is moved to the left under the effect of the reset force of the second back-moving spring 24c, and by shift fork 10, driven wheel is pulled away to the gear ring on engine flywheel.Along with moving core 16 is moved to the left, the second back-moving spring 24c becomes gradually in relatively lax state.
In this process, pushes against sleeve device 12 is also moved to the left under the effect of the reset force of the first back-moving spring 24a and the 3rd back-moving spring 24b; That is to say, the radially projection of the right part of interior pushes against sleeve 12b moves towards the direction of contact bridge 14 and mount pad 28 from the state shown in Fig. 4 a.When moving to the position shown in Fig. 4 b, under the effect of the reset force of the first back-moving spring 24a, the radially outward projection of the right part of interior pushes against sleeve 12b can touch contact bridge 14 and mount pad 28, and produces an additional impact.This additional impact, adds the reset force of the first back-moving spring 24a, contributes to contact bridge 14 to be pulled away from two binding posts 10, disconnects thus the circuit of DC motor.
In addition, due to the pushing effect of the second larger back-moving spring 24c of spring constant, moving core 16 can promptly be moved to the left together with cylindrical member 18 after ignition switch is unclamped, and then makes bottom, the right side 18a of cylindrical member 18 can collide the second end 22a of connecting rod 22.Meanwhile, in the process being moved to the left at connecting rod 22, the radially projection at the first end 22b place of connecting rod 22 can collide the radially projection of the right part of interior pushes against sleeve 12b.The inertia of moving core 16 is larger, therefore can produce larger shock or impact to connecting rod 22.This shock or impulsive force are delivered to contact bridge 14 by the first end 22b of connecting rod, thereby contribute to the welding between disjunction contact bridge 14 and binding post 8.The collision producing in the second end 22a and the first end 22b place of connecting rod 22 all contributes to contact bridge 14 to be pulled away from two binding posts 10, disconnects thus the circuit of DC motor.
Fig. 3 has shown the circuit diagram according to starter of the present invention.Below in conjunction with Fig. 2 and Fig. 3, the operating process according to starter of the present invention is described.
As shown in Figure 3, the solenoid 6 in Fig. 2 is made up of hold-in winding HW and engagement coil EW two parts, and wherein the direction of winding of hold-in winding HW and engagement coil EW is contrary.The coil turn (being for example 300 circles) of hold-in winding HW is far longer than the coil turn (being for example 5 circles) of engagement coil EW.In the time that the ignition switch 120 in Fig. 3 is closed, from the electric current of power supply 100 can flow through a T50, ignition switch 120, engagement coil EW, some T45, thereby make the DC motor M of starter start to rotate from inactive state.
Now, the current opposite in direction in hold-in winding HW and engagement coil EW, the electromagnetic force that therefore hold-in winding HW produces is also contrary with the electromagnetic force direction that engagement coil EW produces.But, owing to engaging the number of ampere turns of coil EW much smaller than the number of ampere turns of hold-in winding HW, so the electromagnetic force that the electromagnetic force that hold-in winding HW produces produces much larger than engagement coil EW.That hold-in winding HW and engagement coil EW produce, after cancelling out each other, remaining electromagnetic force can drive moving core 16, cylindrical member 18 in Fig. 4 to move right, until contact bridge 14 touches binding post 8, and connects the circuit of DC motor M.
After engine start, in the time that ignition switch 120 is released, hold-in winding HW is by short circuit.The coil turn of hold-in winding HW is larger, and its inductance coefficent is higher.In the time that ignition switch 120 discharges, the electric current in hold-in winding HW is from normal working value becomes zero process, and hold-in winding HW can induce electromagnetic force.This electromagnetic force can hinder moving core 16 to be accelerated to move backward, thereby is unfavorable for that movable core 16 is pulled away from two binding posts 8 by making axle 22 produce larger collision impact power by contact bridge 14.
In order to overcome the problems referred to above, comprise a discharge device 200 according to the control circuit of starter of the present invention, as shown in Figure 3.In the time that ignition switch 120 discharges, discharge device 200 is for discharging the electric energy of hold-in winding HW fast.
Preferably, this discharge device 200 is diodes, and is in parallel and is arranged in the control circuit of starter with hold-in winding HW.The discharge device 200 of diode type makes to flow to from T50 the current lead-through of T31, and the electric current of reverse flow is cut off.Optionally, this discharge device 300 can also be triode, using the switch electronic device as one-way conduction, oppositely ending.Further preferred, this discharge device can be the power component of a switching circuit or one-way conduction, and the energy in hold-in winding HW can be released as early as possible.
Finally, the invention also discloses a kind of vehicle starter, comprising: motor; The transmission mechanism being connected with the output shaft of motor; And foregoing electromagnetic switch, it controls the operation of described motor and transmission mechanism.
Although description details specific implementations of the present invention, they are only exemplary the providing of object for explaining, not should be understood to protection range of the present invention to form and limit.Without departing from the spirit and scope of the present invention, the present invention can carry out various replacements, variants and modifications, and these replace, variants and modifications all the protection range of claims within.
Claims (12)
1. for an electromagnetic switch for vehicle starter, comprising: fixed iron core; Be positioned at fixed iron core left side and can towards with the moving core moving away from fixed iron core; Solenoid, for generation of the electromagnetic force moving towards fixed iron core unshakable in one's determination that innervates; Be located at a pairs of posts at the right side place of fixed iron core; It is characterized in that, electromagnetic switch is also provided with:
Through the pushes against sleeve device of fixed iron core, it has the first end of close binding post and second end contrary with first end, and contact bridge is installed slidably on its first end slidably; And
The first back-moving spring, it is along applying active force in pushes against sleeve device away from the direction of binding post;
Pushes against sleeve device is set up as follows: after electromagnetic switch energising, pushes against sleeve device moves towards binding post direction, and to drive contact bridge to touch binding post, and the first end of pushes against sleeve device is separated from contact bridge one segment distance; After electromagnetic switch power-off, along with move away from the direction of binding post on pushes against sleeve device edge under the effect of the first back-moving spring, the first end of pushes against sleeve device collides contact bridge.
2. the electromagnetic switch for vehicle starter as claimed in claim 1, is characterized in that: described pushes against sleeve device comprises outer pushes against sleeve and is slidably disposed on the interior pushing member of outer pushes against sleeve inner side;
Interior pushing member is provided with radially outward projection at one end place near binding post, and it is separated from contact bridge one segment distance after electromagnetic switch energising, and clashes into contact bridge after electromagnetic switch power-off.
3. the electromagnetic switch for vehicle starter as claimed in claim 1 or 2, is characterized in that: described the first back-moving spring is resisted against between second end and fixed iron core of outside projection of pushes against sleeve device, and arranges around pushes against sleeve device.
4. the electromagnetic switch for vehicle starter as claimed in claim 2, is characterized in that: outer pushes against sleeve and interior pushing member are respectively arranged with the radially outward projection that can mutually abut against at one end place away from binding post.
5. the electromagnetic switch for vehicle starter as claimed in claim 2, is characterized in that: described interior pushing member is interior pushes against sleeve; Described electromagnetic switch is also provided with the connecting rod that runs through interior pushes against sleeve and can slide therein; Described connecting rod comprises radial outside and the first end of close binding post and the second contrary end that can project into interior pushes against sleeve, and be configured to along with moving core moves away from fixed iron core, the first end of connecting rod collides one end of the close binding post of interior pushes against sleeve.
6. the electromagnetic switch for vehicle starter as claimed in claim 5, it is characterized in that: the second end of connecting rod is arranged in the through hole of moving core, the first end of connecting rod and the second end have respectively radially outward projection, and the inwall of the through hole of moving core is formed with radially inwardly projection;
Described connecting rod is set up as follows: in the process moving away from fixed iron core at moving core, the radially inside projection of moving core collides the radially outward projection of the second end of connecting rod, and/or the radially outward projection of the first end of connecting rod collides one end of the close binding post of interior pushes against sleeve.
7. the electromagnetic switch for vehicle starter as claimed in claim 3, is characterized in that: in the through hole of moving core, be fixed with cylindrical member, the bottom, right side of cylindrical member has through hole; Can run through the through hole by cylindrical member thereby the size of the first end of connecting rod is less than the size of the through hole of cylindrical member, the size of the second end of connecting rod is greater than the size of the through hole of cylindrical member.
8. the electromagnetic switch for vehicle starter as claimed in claim 1 or 2, is characterized in that: in the through hole of moving core, be equipped with the second back-moving spring, it abuts against respectively the right-hand end of moving core and the second end of pushes against sleeve device.
9. the electromagnetic switch for vehicle starter as claimed in claim 1, is characterized in that: described electromagnetic switch comprises control circuit, described control circuit is provided with the discharge device being connected in parallel with solenoid;
Described discharge device is access in the control circuit of electromagnetic switch as follows: in the time that electromagnetic switch is switched on, described discharge device is in off state; In the time of electromagnetic switch power-off, described discharge device is in conducting state, to form closed circuit with solenoid.
10. the electromagnetic switch for vehicle starter as claimed in claim 9, is characterized in that: solenoid comprises hold-in winding and engagement coil, and both winding directions are contrary, and the number of ampere turns of hold-in winding is much larger than the number of ampere turns of engagement coil; Described discharge device is in parallel and is connected with hold-in winding.
11. electromagnetic switch for vehicle starter as described in claim 9 or 10, is characterized in that: described discharge device is power tube or the switch electronic device that diode, triode or other have the reverse cutoff function of one-way conduction.
12. 1 kinds of vehicle starter, comprising: DC motor; The transmission mechanism being connected with the output shaft of motor; And electromagnetic switch as described in any one in claim 1 to 11, it controls the operation of described DC motor and transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513278.XA CN103854927B (en) | 2012-12-04 | 2012-12-04 | Vehicle starter and its electromagnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513278.XA CN103854927B (en) | 2012-12-04 | 2012-12-04 | Vehicle starter and its electromagnetic switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103854927A true CN103854927A (en) | 2014-06-11 |
| CN103854927B CN103854927B (en) | 2017-07-11 |
Family
ID=50862451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210513278.XA Active CN103854927B (en) | 2012-12-04 | 2012-12-04 | Vehicle starter and its electromagnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103854927B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391115A (en) * | 2018-04-18 | 2019-10-29 | Seg汽车德国有限公司 | Cranking-motor relay for starting device |
| CN115360061A (en) * | 2022-09-26 | 2022-11-18 | 北京天创凯睿科技有限公司 | Self-holding electromagnetic contactor and electric control system of fighter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172336A (en) * | 1996-04-23 | 1998-02-04 | 瓦莱奥电机设备公司 | Starter switch special purpose for car and starter with switch |
| US20080136568A1 (en) * | 2006-12-06 | 2008-06-12 | Denso Corporation | Electromagnetic switch for use in starter |
| JP2009224113A (en) * | 2008-03-14 | 2009-10-01 | Denso Corp | Electromagnetic switch |
| CN202534604U (en) * | 2012-05-17 | 2012-11-14 | 博世汽车部件(长沙)有限公司 | Vehicle starter and electromagnetic switch thereof |
| CN203055799U (en) * | 2012-12-04 | 2013-07-10 | 博世汽车部件(长沙)有限公司 | Vehicle starter and electromagnetic switch thereof |
-
2012
- 2012-12-04 CN CN201210513278.XA patent/CN103854927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172336A (en) * | 1996-04-23 | 1998-02-04 | 瓦莱奥电机设备公司 | Starter switch special purpose for car and starter with switch |
| US20080136568A1 (en) * | 2006-12-06 | 2008-06-12 | Denso Corporation | Electromagnetic switch for use in starter |
| JP2009224113A (en) * | 2008-03-14 | 2009-10-01 | Denso Corp | Electromagnetic switch |
| CN202534604U (en) * | 2012-05-17 | 2012-11-14 | 博世汽车部件(长沙)有限公司 | Vehicle starter and electromagnetic switch thereof |
| CN203055799U (en) * | 2012-12-04 | 2013-07-10 | 博世汽车部件(长沙)有限公司 | Vehicle starter and electromagnetic switch thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391115A (en) * | 2018-04-18 | 2019-10-29 | Seg汽车德国有限公司 | Cranking-motor relay for starting device |
| CN115360061A (en) * | 2022-09-26 | 2022-11-18 | 北京天创凯睿科技有限公司 | Self-holding electromagnetic contactor and electric control system of fighter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103854927B (en) | 2017-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5698233B2 (en) | Switching relay with contact peeling device | |
| US8514038B2 (en) | Starter relay of a starter device for internal combustion engines | |
| JP2006266101A (en) | Electromagnetic switch for starter | |
| JP5594184B2 (en) | Electromagnetic switch device | |
| US20110227676A1 (en) | Forced Return Solenoid | |
| CN101025140A (en) | Engine starter and its control apparatus | |
| CN103854927A (en) | Vehicle starter and electromagnetic switch thereof | |
| CN203055799U (en) | Vehicle starter and electromagnetic switch thereof | |
| CN202534604U (en) | Vehicle starter and electromagnetic switch thereof | |
| CN103426691B (en) | Vehicle starter and electromagnetic switch thereof | |
| CN103943414B (en) | Electromagnetic switch and vehicle starter | |
| US4916958A (en) | Pinion stopper of engine starter | |
| JP5765974B2 (en) | Starter | |
| JP5200149B2 (en) | Magnet switch for starter and manufacturing method thereof | |
| EP2930734B1 (en) | Electromagnetic switch, manufacturing method therefor, and vehicle engine | |
| JP5590112B2 (en) | Starter | |
| CN103094010A (en) | Starter electromagnetic switch and starter comprising the same | |
| CN103943415B (en) | Electromagnetic switch and vehicle starter | |
| JP5151832B2 (en) | Electromagnetic switch | |
| CN109768668B (en) | Electronic control starter electromagnetic switch and starter using same | |
| EP2975627B1 (en) | Solenoid switch and vehicle starter motor | |
| CN202259057U (en) | Electromagnetic switch for starter and starter comprising same | |
| CN203055801U (en) | Electromagnetic switch and vehicle starter | |
| KR101701155B1 (en) | Air circuit breaker | |
| CN204126799U (en) | A kind of starter motor with buffering shock-absorbing protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180509 Address after: 410100 No. 26 Lixiang Middle Road, Changsha economic and Technological Development Zone, Hunan Patentee after: Thorne (China) lattice Auto Parts Co., Ltd. Address before: 410100 No. 26 Lixiang Middle Road, Changsha economic and Technological Development Zone, Hunan Patentee before: Bosch Automotive Products (Changsha) Co., Ltd. |
|
| TR01 | Transfer of patent right |