CN208950756U - A kind of planetary reduction gear automobile starter - Google Patents
A kind of planetary reduction gear automobile starter Download PDFInfo
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- CN208950756U CN208950756U CN201821633301.8U CN201821633301U CN208950756U CN 208950756 U CN208950756 U CN 208950756U CN 201821633301 U CN201821633301 U CN 201821633301U CN 208950756 U CN208950756 U CN 208950756U
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- isolator
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- washer
- iron core
- movable contact
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
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Abstract
The utility model relates to automobile starter technical fields, more particularly to a kind of planetary reduction gear automobile starter, including electromagnetic switch, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly, electromagnetic switch includes electromagnetic coil, mandril, iron core, movable contact, B terminal and M terminal, and B terminal includes insulating cover, B bolt, B stationary ring, plain washer and spring washer；Isolator assembly includes planet axis, isolator, reduction gearbox, baffle, retainer ring and shelves set, and isolator is moved along the direction spline of planet axis, is arranged with washer in the planet axis close to reduction gearbox.By this starter, the volume that can effectively solve electromagnetic switch and M stationary ring and B stationary ring poor contact, the low problem of ability to bear, and reduce electromagnetic switch itself extends service life of equipment to further save installation space.
Description
Technical field
The utility model relates to automobile starter technical fields, more particularly to a kind of planetary reduction gear automobile starter.
Background technique
It is well known that the starting of engine needs the support of external force, automobile starter is exactly to play this role.Greatly
It is said on body, starter motor realizes entire start-up course with three components.Direct current series motor introduces the electric current from battery
And the driving gear of starter is made to generate mechanical movement；Transmission mechanism will drive gear to engage into flywheel ring gear, while can
It is automatic after the engine is started up to disengage；The on-off of starter motor circuit is then controlled by an electromagnetic switch.
Currently, the starting of automobile engine is realized by external force, a kind of more typical start mode is to pass through vapour
Vehicle starter is started.The electromagnetic switch that existing automobile starter includes: armature, is electrically connected with armature, in electromagnetic switch
Portion's electromagnetic coil is powered, and dynamic iron core moves under magnetic fields, and dynamic iron core drives the winged of gear and automobile engine by shift fork
Wheel gear engagement, while the movement of dynamic iron core may make moving contact to be connected with the static contact for being connected to battery, armature is powered, armature
Driving gear rotation is driven, thus by car engine start.As it can be seen that electromagnetic switch is the control switch on automobile starter,
It is one of big component of starter three, for releasing driving gear, engages it with flywheel ring gear, while also there is the work of switch
With.When the static contact of electromagnetic switch and moving contact are closed, starter main circuit is connected, the armature of starter is rotated.Therefore
Electromagnetic switch is the critical component of automobile starter, its quality will directly affect the performance of automobile starter.
In the prior art, proposing Granted publication is CN207830023U, and authorization publication date is on 09 07th, 2018
Chinese utility model patent file, technical solution disclosed in the patent document are as follows: a kind of permanent magnet car starter is related to vapour
Vehicle starter technical field.The utility model includes that B terminal, M terminal, electromagnetic switch, rotor assembly, brush holder assembly and driving are total
At the electromagnetic switch includes electromagnetic coil and dynamic iron core, and the axis of the dynamic iron core is overlapped with the axis of B terminal, described dynamic
Iron core one end is provided with rotating ring, and the other end is provided with armature, and the dynamic iron core drives rotating ring and armature along its axially reciprocating,
M terminal in the same plane, is connected by the setting of the bottom of M terminal and B terminal by rotating ring with B terminal；The M terminal and brush holder
The carbon brush of assembly is connected by connecting line.
Above-mentioned technical proposal is in actual use, it may appear that following problems:
(1) B terminal is using structure in the prior art, by B bolt, B stationary ring, insulating cover, pannel, plain washer, bullet
The composition such as spring washer, there are gap between B bolt head and B stationary ring plane, B bolt head can be relatively rotated, and be easy to appear M
Stationary ring and B stationary ring plane cause rotating ring and the two poor contact, cause arcing to burn after a period of time not within a plane
Erosion, damage switch and motor.And pannel is used, the B terminal axial compression tension that can be born is small, and ability to bear is low.
(2) return spring is set on armature, and the block piece stretched out with armature tail end contacts, for moving back one-way clutch
Out with the meshing state of engine flywheel, structure is complicated and volume is big, and power-assisted effect is poor.
(3) isolator can not be limited, in moving process, when isolator stretches out or unexpected overproof, is easy
It rushes to summit front cover or milling front cover, causes isolator to damage, influence service life.
(4) during shift fork pushes isolator mobile, do not buffer, isolator can directly with remaining zero, starter
Part bumps against, and influences service life.
Summary of the invention
In order to solve the above technical problems, can effectively solve the utility model proposes a kind of planetary reduction gear automobile starter
Electromagnetic switch and M stationary ring and B stationary ring poor contact, the low problem of ability to bear, and the volume for reducing electromagnetic switch itself, from
And installation space is further saved, extend service life of equipment.
The utility model is realized by using following technical proposals:
A kind of planetary reduction gear automobile starter, including electromagnetic switch, shell, drive assembly, isolator assembly, shifting fork assembly
And brush holder assembly, the electromagnetic switch include that electromagnetic coil, mandril, iron core, movable contact, B terminal and M terminal, feature exist
In: the B terminal include insulating cover, B bolt, B stationary ring, plain washer and spring washer, the lower surface on the head of the B bolt with
The upper surface of B stationary ring plane is in contact；The B stationary ring perpendicular is equipped with through-hole, and the screw rod of the B bolt, which is interference fitted, to be connected
Connect in through-hole, the screw rod and B stationary ring interference fit connection region, screw rod be equipped with straight grain, the nut of the B bolt with
The second plain washer and second spring washer are equipped between insulating cover；The axis of the axis of the iron core, the axis of B terminal and M terminal
Line is not in same horizontal line, and iron core drives mandril and movable contact reciprocating along its axis, and movable contact is mobile, by the end B
Son and M terminal link together；The isolator assembly includes planet axis, isolator, reduction gearbox, baffle, retainer ring and shelves set, institute
Isolator is stated equipped with internal spline, planet axis is equipped with the external splines to match with internal spline, and the isolator is along the direction of planet axis
Spline is mobile, and the retainer ring and shelves set are for limiting the mobile distance of isolator；It is arranged in the planet axis close to reduction gearbox
Washer.
The shell includes front cover and rear cover, and the front cover is equipped with counterbore, and shelves set left end is located inside counterbore, shelves set
Right end is emerged front cover end face；The shelves set left end and front cover are equipped with gap a, and shelves cover right end and front cover end face is equipped with gap b, described
When isolator is moved to the left to ultimate attainment position, there are gap c with shelves set.
The gap a is 1mm, and gap b is 2mm, and gap c is 1mm.
The washer is 2, includes a thin washer and a thick washer.
The movable contact is in a circular table shape, and the head of the B terminal and M terminal is equipped with to match with movable contact side
Side.
Copper sheathing is equipped between the electromagnetic coil and iron core.
The shifting fork assembly includes shift fork part, is hinged on front cover in the middle part of shift fork part, and the upper end of shift fork part and mandril connect
It connects, the lower end of shift fork part is caught between isolator and baffle；The iron core of electromagnetic switch is mobile to drive mandril mobile, passes through shift fork part
Transmission so that isolator is mobile.
The drive assembly includes stator, and the stator and rear cover seam allowance cooperate, and sealing is equipped between stator and rear cover
Circle.
Compared with prior art, the beneficial effects of the utility model are shown:
1, the lower surface on the head of B bolt is in contact with the upper surface of B stationary ring plane, and the head of B bolt opposite can not turn
It is dynamic；The screw rod interference fit of B bolt is connected to through-hole, becomes to relatively rotate from that can relatively rotate.So that B stationary ring is firm
It is assemblied on shell, is not easy to cause stationary ring sea level changes space angle by rotation easily, makes M stationary ring and B stationary ring plane not one
Within a plane, rotating ring and the two poor contact are caused, arcing ablation, damage switch and motor are caused after a period of time.
Pannel is changed to the second plain washer and second spring washer, can increase B terminal axial compression tension, more preferable protection modeling
Expect that the insulating cover of material is indeformable.
Screw rod is equipped with straight grain, is interference fitted screw rod preferably with B stationary ring and connects.
Equipped with retainer ring and shelves set, axially position limitation is carried out to isolator, avoids isolator movement too far, impact shell etc.
Influence service life.
It is arranged with washer in the planet axis close to reduction gearbox, during shift fork pushes isolator mobile, plays buffering
Effect avoids isolator from directly bumping against with remaining components of starter, influences service life.
2, shelves set left end and front cover are equipped with gap a, when guaranteeing isolator accidental shock shelves set, front cover of not rushing to summit；Shelves set is right
End is equipped with gap b with front cover end face, when guaranteeing that isolator is overproof, not milling front cover；The isolator is moved to the left to ultimate attainment position
When setting, with shelves set there are gap c, guarantee not impacting shelves set when isolator stretches out and guarantee injury-free in its work, Jin Erti
The service life of high isolator.
3, gap a is 1mm, and gap b is 2mm, and gap c is 1mm, using suitable and lesser gap, saves space, protection
Effect is obvious.
4, using one thin one thick two washers, buffering effect is more preferable.
5, the movable contact is in a circular table shape, and the head of the B terminal and M terminal is equipped with to match with movable contact side
Side so that movable contact and B terminal, the cooperation really up to the mark of M terminal, function are opened as function in the prior art
The volume of pass is smaller, suitable for requiring the automobile that starter overall volume is smaller or motor space is more nervous, and connects
Effect is more stable.
6, copper sheathing is set, the guiding role of iron core is played, while electromagnetic coil being protected not to be worn.
7, when ignition switch, the coil of electromagnetic switch includes pull in winding, coil is maintained to connect, and generates electric current, electricity
Iron core magnetization in switch is also generated magnetic field, coil magnetic field and core field interaction, production by miscarriage magnetisation field, magnetic field flux
Magnetisation power pushes iron core to move right, and then shift fork upper end is driven to move right, and shift fork lower end is caught in isolator and baffle
Centre pushes isolator mobile to engine flywheel direction, engages when arriving certain position with engine flywheel by its fulcrum, this
When movable contact just contacted with the stationary ring of B, M terminal, in main circuit switch pull in winding be short-circuited, in main circuit only have stator
Winding and armature coil, D.C. resistance very little will generate very high current, and armature output end, that is, axis toothed portion generates very big torque,
The planetary gear rotation engaged with itself is driven, planetary gear is rotated along the reduction gear ring engaged simultaneously, and passes through jackshaft
Planet axis and isolator rotation are driven, so that engine flywheel be driven to rotate, realizes that engine ignition starts, due to switching at this time
Pull in winding is short-circuited, and is connected with switch keeping coil, and the two current direction switchs electric current in coil on the contrary, offset each other
It almost becomes zero, magnetic field disappears, and magnetic field force disappears, and in addition in the switch under the action of compressed return spring, shift fork is retrodicted
Baffle retracts isolator rapidly, exits and engages with engine flywheel, avoids counter drag.The ignition start process of engine is whole
Terminate.
8, sealing ring is used for dust-proof and sealing function.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail,
In:
Fig. 1 is the detailed maps of the utility model；
Fig. 2 is the detailed maps of B terminal in the utility model；
Fig. 3 is the detailed maps of B bolt in the utility model；
Fig. 4 is that (a is between shelves set left end and front cover for the partial enlargement diagram of the utility model isolator assembly and front cover
Distance, b be shelves cover the distance between right end and front cover end face, c for isolator be moved to the left to ultimate attainment position when, cover it with shelves
Between distance)；
Marked in the figure:
1, electromagnetic switch, 2, electromagnetic coil, 3, mandril, 4, iron core, 5, movable contact, 6, B terminal, 7, M terminal, 8, insulation
Lid, 9, the head of B bolt, 10, B stationary ring, 11, plain washer, 12, spring washer, 13, straight grain, 14, planet axis, 15, isolator,
16, reduction gearbox, 17, baffle, 18, retainer ring, 19, shelves set, 20, front cover, 21, rear cover, 22, thin washer, 23, thick washer, 24, copper
Set, 25, shift fork part, 26, stator, 27, sealing ring, 28, brush holder assembly, 29, reduction gear ring, 30, armature, 31, among isolator
Axis, 32, planetary gear, the 33, second plain washer, 34, second spring washer, 35, nut, 36, screw rod.
Specific embodiment
Embodiment 1
As the utility model basic embodiment, the utility model includes a kind of planetary reduction gear automobile starter, including
Electromagnetic switch 1, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly 28, the electromagnetic switch 1 include electromagnetism
Coil 2, mandril 3, iron core 4, movable contact 5, B terminal 6 and M terminal 7, the B terminal 6 include insulating cover 8, B bolt, B stationary ring
10, the lower surface of plain washer 11 and spring washer 12, the head 9 of the B bolt is in contact with the upper surface of 10 plane of B stationary ring；
10 perpendicular of B stationary ring is equipped with through-hole, and the interference fit of screw rod 36 of the B bolt is connected in through-hole, the screw rod
36 are equipped with straight grain 13 with the regions of the interference fit connection of B stationary ring 10, screw rod 36, the nut 35 of the B bolt and insulating cover 8 it
Between be equipped with the second plain washer 33 and second spring washer 34；The axis of the axis of the iron core 4, the axis of B terminal 6 and M terminal 7
Not in same horizontal line, iron core 4 drives mandril 3 and movable contact 5 reciprocating along its axis, and movable contact 5 is mobile, by B
Terminal 6 and M terminal 7 link together；The isolator assembly include planet axis 14, isolator 15, reduction gearbox 16, baffle 17,
Retainer ring 18 and shelves set 19, the isolator 15 are equipped with internal spline, and planet axis 14 is equipped with the external splines to match with internal spline, described
Isolator 15 is moved along the direction spline of planet axis 14, the retainer ring 18 and shelves set 19 for limit isolator 15 it is mobile away from
From；Washer is arranged in the planet axis 14 close to reduction gearbox 16.
It changes the pannel being arranged between nut 35 and insulating cover 8 in traditional B terminal 6 into plain washer 11 spring washer 12, increases
Add 6 axial compression tension of B terminal, the more preferable insulating cover 8 for protecting plastic material is indeformable.Interference is matched between B bolt and B stationary ring 10
Connection is closed, so that B stationary ring 10 is firmly assemblied on shell, is not easy to cause stationary ring sea level changes space angle by rotation easily,
Make M stationary ring and 10 plane of B stationary ring not within a plane, causes rotating ring and the two poor contact, cause to draw after a period of time
Arcing erosion, damage switch and motor.
After B terminal 6 improves, 35 screw-down torque of B nut can reach 14N.m without rotating, and ability to bear greatly improves.
Equipped with retainer ring 18 and shelves set 19, the planet axis 14 is equipped with circumferential groove, and retainer ring 18 is stuck in groove, described
Shelves set 19 is fixed in planet axis 14, and shelves cover 19 bottom surfaces and are equipped with the second groove to match with retainer ring 18.Retainer ring 18 and shelves set
19 are combined together, and carry out axially position limitation to isolator 15, avoid the movement of isolator 15 too far, impact shell etc., in addition
Washer works as a buffer during shift fork pushes isolator 15 mobile, avoid isolator 15 directly with starter remaining zero
Component bumps against, and improves the service life of isolator 15.
Embodiment 2
As one better embodiment of the utility model, the utility model includes a kind of planetary reduction gear automobile starter, packet
Electromagnetic switch 1, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly 28 are included, the electromagnetic switch 1 includes electricity
Magnetic coil 2, mandril 3, iron core 4, movable contact 5, B terminal 6 and M terminal 7, the B terminal 6 are quiet including insulating cover 8, B bolt, B
The lower surface of ring 10, plain washer 11 and spring washer 12, the head 9 of the B bolt connects with the upper surface of 10 plane of B stationary ring
Touching；10 perpendicular of B stationary ring is equipped with through-hole, and the interference fit of screw rod 36 of the B bolt is connected in through-hole, described
The region of screw rod 36 and the interference fit connection of B stationary ring 10, screw rod 36 are equipped with straight grain 13, the nut 35 of the B bolt and insulation
The second plain washer 33 and second spring washer 34 are equipped between lid 8；The axis of the iron core 4, the axis of B terminal 6 and M terminal 7
Axis not in same horizontal line, iron core 4 drives mandril 3 and movable contact 5 reciprocating along its axis, and movable contact 5 moves
It is dynamic, B terminal 6 and M terminal 7 are linked together；The isolator assembly includes planet axis 14, isolator 15, reduction gearbox 16, gear
Plate 17, retainer ring 18 and shelves set 19, the isolator 15 are equipped with internal spline, and planet axis 14 is equipped with the outer flower to match with internal spline
Key, the isolator 15 are moved along the direction spline of planet axis 14, and the retainer ring 18 and shelves set 19 are for limiting the shifting of isolator 15
Dynamic distance；Washer is arranged in the planet axis 14 close to reduction gearbox 16.
Planet axis 14 is equipped with circumferential groove, and retainer ring 18 is stuck in groove.The shell includes front cover 20 and rear cover 21,
The front cover 20 is equipped with counterbore, and the shelves set 19 is fixed in planet axis 14, and shelves cover 19 left ends and are located inside counterbore, and shelves set 19 is right
20 end face of front cover of emerging is held, shelves cover 19 bottom surfaces and are equipped with the second groove to match with retainer ring 18；Shelves 19 left ends of set and front cover 20
Equipped with gap a, when guaranteeing 15 accidental shock shelves of isolator set 19, front cover 20 of not rushing to summit；Shelves 19 right ends of set are set with 20 end face of front cover
There is gap b, when guaranteeing that isolator 15 is overproof, not milling front cover 20；When the isolator 15 is moved to the left to ultimate attainment position, with shelves
Set 19 guarantees not impact shelves set 19 when isolator 15 stretches out and guarantees injury-free in its work, and then improve single there are gap c
To the service life of device 15, wherein gap a is 1mm, and gap b is 2mm, and gap c is 1mm.
Embodiment 3
As another better embodiment of the utility model, the utility model includes a kind of planetary reduction gear automobile starter,
Including electromagnetic switch 1, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly 28, the electromagnetic switch 1 includes
Electromagnetic coil 2, mandril 3, iron core 4, movable contact 5, B terminal 6 and M terminal 7, the B terminal 6 include insulating cover 8, B bolt, B
The lower surface of stationary ring 10, plain washer 11 and spring washer 12, the head 9 of the B bolt connects with the upper surface of 10 plane of B stationary ring
Touching；10 perpendicular of B stationary ring is equipped with through-hole, and the interference fit of screw rod 36 of the B bolt is connected in through-hole, described
The region of screw rod 36 and the interference fit connection of B stationary ring 10, screw rod 36 are equipped with straight grain 13, the nut 35 of the B bolt and insulation
The second plain washer 33 and second spring washer 34 are equipped between lid 8；The axis of the iron core 4, the axis of B terminal 6 and M terminal 7
Axis not in same horizontal line, iron core 4 drives mandril 3 and movable contact 5 reciprocating along its axis, and movable contact 5 moves
It is dynamic, B terminal 6 and M terminal 7 are linked together；The isolator assembly includes planet axis 14, isolator 15, reduction gearbox 16, gear
Plate 17, retainer ring 18 and shelves set 19, the isolator 15 are equipped with internal spline, and planet axis 14 is equipped with the outer flower to match with internal spline
Key, the isolator 15 are moved along the direction spline of planet axis 14, and the retainer ring 18 and shelves set 19 are for limiting the shifting of isolator 15
Dynamic distance；Washer is arranged in the planet axis 14 close to reduction gearbox 16.
The washer is 2, includes one thin washer 22 and a thick washer 23, plays comfort cushioning effect.
The movable contact 5 is in a circular table shape, and the head of the B terminal 6 and M terminal 7, i.e. B terminal 6 and M terminal 7 are respectively quiet
The position of ring, equipped with the side to match with 5 side of movable contact.The side of the stationary ring is in concave shaped, and movable contact 5 is moved to
When a certain position, the side of movable contact 5 is in contact with the side of B terminal 6 and M terminal 7, when movable contact 5 be moved to it is most right
When side, the side of movable contact 5 is overlapped with the side of B terminal 6 and M terminal 7.
It is equipped with copper sheathing 24 between electromagnetic coil 2 and iron core 4, plays the guiding role of iron core 4, while protecting electromagnetic coil 2 not
It is worn.
Embodiment 4
As the another better embodiment of the utility model, the utility model includes a kind of planetary reduction gear automobile starter,
Including electromagnetic switch 1, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly 28, the electromagnetic switch 1 includes
Electromagnetic coil 2, mandril 3, iron core 4, movable contact 5, B terminal 6 and M terminal 7, the B terminal 6 include insulating cover 8, B bolt, B
The lower surface of stationary ring 10, plain washer 11 and spring washer 12, the head 9 of the B bolt connects with the upper surface of 10 plane of B stationary ring
Touching；10 perpendicular of B stationary ring is equipped with through-hole, and the interference fit of screw rod 36 of the B bolt is connected in through-hole, described
The region of screw rod 36 and the interference fit connection of B stationary ring 10, screw rod 36 are equipped with straight grain 13, the nut 35 of the B bolt and insulation
The second plain washer 33 and second spring washer 34 are equipped between lid 8；The axis of the iron core 4, the axis of B terminal 6 and M terminal 7
Axis not in same horizontal line, iron core 4 drives mandril 3 and movable contact 5 reciprocating along its axis, and movable contact 5 moves
It is dynamic, B terminal 6 and M terminal 7 are linked together；The isolator assembly includes planet axis 14, isolator 15, reduction gearbox 16, gear
Plate 17, retainer ring 18 and shelves set 19, the isolator 15 are equipped with internal spline, and planet axis 14 is equipped with the outer flower to match with internal spline
Key, the isolator 15 are moved along the direction spline of planet axis 14, and the retainer ring 18 and shelves set 19 are for limiting the shifting of isolator 15
Dynamic distance；Washer is arranged in the planet axis 14 close to reduction gearbox 16.
The shell includes front cover 20 and rear cover 21, and the front cover 20 is equipped with counterbore, and the shelves cover 19 left ends and are located at counterbore
Inside, shelves cover 19 right ends and emerge 20 end face of front cover；Shelves 19 left ends of set and front cover 20 are equipped with gap a, guarantee the unexpected punching of isolator 15
When hitting shelves set 19, front cover 20 of not rushing to summit；Shelves 19 right ends of set and 20 end face of front cover are equipped with gap b, when guaranteeing that isolator 15 is overproof, no
Milling front cover 20；When the isolator 15 is moved to the left to ultimate attainment position, with shelves set 19 there are gap c, guarantee that isolator 15 is stretched
Shelves set 19 is not impacted when out and guarantees service life injury-free in its work, and then improving isolator 15, wherein gap a is
1mm, gap b are 2mm, and gap c is 1mm.
Washer is 2, includes one thin washer 22 and a thick washer 23, plays comfort cushioning effect.
The movable contact 5 is in a circular table shape, and the head of the B terminal 6 and M terminal 7, i.e. B terminal 6 and M terminal 7 are respectively quiet
The position of ring is equipped with the side to match with 5 side of movable contact.The side of the stationary ring is in concave shaped, and movable contact 5 is moved to
When a certain position, the side of movable contact 5 is in contact with the side of B terminal 6 and M terminal 7, when movable contact 5 be moved to it is most right
When side, the side of movable contact 5 is overlapped with the side of B terminal 6 and M terminal 7.
It is equipped with copper sheathing 24 between electromagnetic coil 2 and iron core 4, copper sheathing 24 is equipped between electromagnetic coil 2 and iron core 4, plays iron core 4
Guiding role, while electromagnetic coil 2 being protected not to be worn.
The shifting fork assembly includes shift fork part 25, and the middle part of shift fork part 25 is hinged on front cover 20, the upper end of shift fork part 25
It is connect with mandril 3, the lower end of shift fork part 25 is caught between isolator 15 and baffle 17；The iron core 4 of electromagnetic switch 1 is mobile to drive top
Bar 3 is mobile, by the transmission of shift fork part 25 so that isolator 15 is mobile.
Embodiment 5
As the utility model preferred forms, the utility model includes a kind of planetary reduction gear automobile starter, including
Electromagnetic switch 1, shell, drive assembly, isolator assembly, shifting fork assembly and brush holder assembly 28, the electromagnetic switch 1 include electromagnetism
Coil 2, mandril 3, iron core 4, movable contact 5, B terminal 6 and M terminal 7, the B terminal 6 include insulating cover 8, B bolt, B stationary ring
10, the lower surface of plain washer 11 and spring washer 12, the head 9 of the B bolt is in contact with the upper surface of 10 plane of B stationary ring；
10 perpendicular of B stationary ring is equipped with through-hole, and the interference fit of screw rod 36 of the B bolt is connected in through-hole, the screw rod
36 are equipped with straight grain 13 with the regions of the interference fit connection of B stationary ring 10, screw rod 36, the nut 35 of the B bolt and insulating cover 8 it
Between be equipped with the second plain washer 33 and second spring washer 34；The axis of the axis of the iron core 4, the axis of B terminal 6 and M terminal 7
Not in same horizontal line, iron core 4 drives mandril 3 and movable contact 5 reciprocating along its axis, and movable contact 5 is mobile, by B
Terminal 6 and M terminal 7 link together；The isolator assembly include planet axis 14, isolator 15, reduction gearbox 16, baffle 17,
Retainer ring 18 and shelves set 19, the isolator 15 are equipped with internal spline, and planet axis 14 is equipped with the external splines to match with internal spline, described
Isolator 15 is moved along the direction spline of planet axis 14, the retainer ring 18 and shelves set 19 for limit isolator 15 it is mobile away from
From；Washer is arranged in the planet axis 14 close to reduction gearbox 16.
The shell includes front cover 20 and rear cover 21, and the front cover 20 is equipped with counterbore, and the shelves cover 19 left ends and are located at counterbore
Inside, shelves cover 19 right ends and emerge 20 end face of front cover；Shelves 19 left ends of set and front cover 20 are equipped with gap a, guarantee the unexpected punching of isolator 15
When hitting shelves set 19, front cover 20 of not rushing to summit；Shelves 19 right ends of set and 20 end face of front cover are equipped with gap b, when guaranteeing that isolator 15 is overproof, no
Milling front cover 20；When the isolator 15 is moved to the left to ultimate attainment position, with shelves set 19 there are gap c, guarantee that isolator 15 is stretched
Shelves set 19 is not impacted when out and guarantees service life injury-free in its work, and then improving isolator 15, wherein gap a is
1mm, gap b are 2mm, and gap c is 1mm.
The washer is 2, includes one thin washer 22 and a thick washer 23.
The movable contact 5 is in a circular table shape, and the head of the B terminal 6 and M terminal 7, i.e. B terminal 6 and M terminal 7 are respectively quiet
The position of ring is equipped with the side to match with 5 side of movable contact.The side of the stationary ring is in concave shaped, and movable contact 5 is moved to
When a certain position, the side of movable contact 5 is in contact with the side of B terminal 6 and M terminal 7, when movable contact 5 be moved to it is most right
When side, the side of movable contact 5 is overlapped with the side of B terminal 6 and M terminal 7.
It is equipped with copper sheathing 24 between the electromagnetic coil 2 and iron core 4, plays comfort cushioning effect.
The shifting fork assembly includes shift fork part 25, and the middle part of shift fork part 25 is hinged on front cover 20, the upper end of shift fork part 25
It is connect with mandril 3, the lower end of shift fork part 25 is caught between isolator 15 and baffle 17；The iron core 4 of electromagnetic switch 1 is mobile to drive top
Bar 3 is mobile, by the transmission of shift fork part 25 so that isolator 15 is mobile.
Front cover 20 is overall structure pedestal, and the interface part with engine, and electromagnetic switch 1 passes through bolt and front cover 20
It is fixed together, reduction gear ring 29, reduction gearbox 16 and front cover 20 is assembled in reduction gearbox 16 and is cooperated using seam allowance, isolator assembly dress
In reduction gearbox 16, cooperated by reduction gearbox 16 and 20 bearing chamber of front cover, planetary gear 32 is placed on isolator jackshaft 31, simultaneously
It is engaged outside with reduction gear ring 29, interior and 30 axis tooth engagement of armature, the drive assembly includes stator 26, stator 26 and reduction gearbox 16
Cooperated using seam allowance, is cooperated with rear cover 21 using seam allowance, sealing ring 27 is equipped between stator 26 and rear cover 21；Before armature 30 with
The engagement of planetary gear 32, with 15 planet axis of isolator, 14 bearing fit, cooperate after armature 30 with rear bearing, centre be put in stator 26 it
In.
When ignition switch, the coil of electromagnetic switch 1 includes pull in winding, coil is maintained to connect, and generates electric current, electric current
Magnetic field is generated, magnetic field flux magnetizes iron core 4 in switch, also generates magnetic field, coil magnetic field and 4 magnetic field interaction of iron core, produces
Magnetisation power pushes iron core 4 to move right, and then shift fork upper end is driven to move right, and shift fork lower end is caught in isolator 15 and gear
The centre of plate 17 pushes isolator 15 mobile to engine flywheel direction, flies when arriving certain position with engine by its fulcrum
Wheel engagement, movable contact 5 is just contacted with the stationary ring of B, M terminal 7 at this time, and pull in winding is switched in main circuit and is short-circuited, main electricity
Only has 30 coil of 26 winding of stator and armature in road, D.C. resistance very little will generate very high current, 30 output ends of armature, that is, axis tooth
Part generates very big torque, drives the planetary gear 32 engaged with itself to rotate, planetary gear 32 is simultaneously along the deceleration engaged
Gear ring 29 rotates, and drives planet axis 14 and isolator 15 to rotate by jackshaft, so that engine flywheel be driven to rotate, realizes
Engine ignition starts, and is short-circuited due to switching pull in winding at this time, and connect with switch keeping coil, the two current direction phase
Instead, it offsets each other, switchs electric current in coil and almost become zero, magnetic field disappears, and magnetic field force disappears, in addition compressed in the switch
Under the action of return spring, shift fork, which retrodicts baffle 17, retracts isolator 15 rapidly, exits and engages with engine flywheel, avoids
It is counter to drag.The ignition start process of engine all terminates.
In conclusion after those skilled in the art read the utility model file, skill according to the present utility model
Art scheme and technical concept are not necessarily to creative mental labour and other various corresponding conversion schemes for making, belong to practical
Novel protected range.
Claims (8)
1. a kind of planetary reduction gear automobile starter, including electromagnetic switch (1), shell, drive assembly, isolator assembly, shift fork are total
At with brush holder assembly (28), the electromagnetic switch (1) includes electromagnetic coil (2), mandril (3), iron core (4), movable contact (5), B
Terminal (6) and M terminal (7), it is characterised in that: the B terminal (6) includes insulating cover (8), B bolt, B stationary ring (10), plain washer
(11) it is in contact with spring washer (12), the lower surface on the head (9) of the B bolt with the upper surface of B stationary ring (10) plane；Institute
B stationary ring (10) perpendicular is stated equipped with through-hole, screw rod (36) interference fit of the B bolt is connected in through-hole, the spiral shell
The region of bar (36) and the connection of B stationary ring (10) interference fit, screw rod (36) are equipped with straight grain (13), the nut of the B bolt
(35) the second plain washer (33) and second spring washer (34) are equipped between insulating cover (8)；The axis of the iron core (4), the end B
Not in same horizontal line, iron core (4) drives mandril (3) and movable contact (5) along it for the axis of sub (6) and the axis of M terminal (7)
Axis is reciprocating, and movable contact (5) is mobile, and B terminal (6) and M terminal (7) are linked together；The isolator assembly
Including planet axis (14), isolator (15), reduction gearbox (16), baffle (17), retainer ring (18) and shelves set (19), the isolator
(15) it is equipped with internal spline, planet axis (14) is equipped with the external splines to match with internal spline, and the isolator (15) is along planet axis
(14) direction spline is mobile, and the retainer ring (18) and shelves set (19) are used to limit isolator (15) mobile distance；Close
Washer is arranged in the planet axis (14) of reduction gearbox (16).
2. a kind of planetary reduction gear automobile starter according to claim 1, it is characterised in that: the shell includes front cover
(20) and rear cover (21), the front cover (20) are equipped with counterbore, and shelves set (19) left end is located inside counterbore, shelves set (19) right end
It emerges front cover (20) end face；Shelves set (19) left end and front cover (20) are equipped with gap a, and shelves set (19) right end and front cover (20) are held
Face is equipped with gap b, and when the isolator (15) is moved to the left to ultimate attainment position, there are gap c with shelves set (19).
3. a kind of planetary reduction gear automobile starter according to claim 2, it is characterised in that: the gap a is 1mm,
Gap b is 2mm, and gap c is 1mm.
4. a kind of planetary reduction gear automobile starter according to claim 1 or 3, it is characterised in that: the washer is 2,
Include one thin washer (22) and a thick washer (23).
5. a kind of planetary reduction gear automobile starter according to claim 4, it is characterised in that: the movable contact (5) is in
Round table-like, the head of the B terminal (6) and M terminal (7) is equipped with the side to match with movable contact (5) side.
6. a kind of planetary reduction gear automobile starter according to claim 5, it is characterised in that: the electromagnetic coil (2) with
Copper sheathing (24) are equipped between iron core (4).
7. a kind of planetary reduction gear automobile starter according to claim 6, it is characterised in that: the shifting fork assembly includes dialling
Fork (25) is hinged on front cover (20) in the middle part of shift fork part (25), and the upper end of shift fork part (25) is connect with mandril (3), shift fork
The lower end of part (25) is caught between isolator (15) and baffle (17)；The iron core (4) of electromagnetic switch (1) is mobile to drive mandril (3)
It is mobile, by the transmission of shift fork part (25) so that isolator (15) is mobile.
8. a kind of planetary reduction gear automobile starter according to claim 7, it is characterised in that: the drive assembly includes fixed
Sub (26), the stator (26) and rear cover (21) seam allowance cooperate, and are equipped with sealing ring (27) between stator (26) and rear cover (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821633301.8U CN208950756U (en) | 2018-10-09 | 2018-10-09 | A kind of planetary reduction gear automobile starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821633301.8U CN208950756U (en) | 2018-10-09 | 2018-10-09 | A kind of planetary reduction gear automobile starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208950756U true CN208950756U (en) | 2019-06-07 |
Family
ID=66740759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821633301.8U Expired - Fee Related CN208950756U (en) | 2018-10-09 | 2018-10-09 | A kind of planetary reduction gear automobile starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208950756U (en) |
-
2018
- 2018-10-09 CN CN201821633301.8U patent/CN208950756U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |