CN107606101A - Differential gear - Google Patents
Differential gear Download PDFInfo
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- CN107606101A CN107606101A CN201710555635.1A CN201710555635A CN107606101A CN 107606101 A CN107606101 A CN 107606101A CN 201710555635 A CN201710555635 A CN 201710555635A CN 107606101 A CN107606101 A CN 107606101A
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- differential
- plunger
- electromagnet
- clutch component
- actuator
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Abstract
The present invention provides a kind of differential gear.Differential gear possesses differential casing and differential attachment, the clutch component that differential casing and differential attachment are linked, produce the actuator of the locomotivity of clutch component, mobile force transmitting member by from the locomotivity of actuator to clutch component transmission, to with actuator caused by the lock washer that is exerted a force to clutch component of the opposite direction of moving direction, actuator has the magnetic force by electromagnet while the plunger that lock washer is moved from the axially compressed one side of the first specific length, the movement to the side opposite with clutch component side of plunger is limited by the abutting part of limiting member, when lock washer is the first specific length, axial gap is formed between plunger and abutting part.
Description
Technical field
The present invention relates to by the driving force of input from a pair of output links by allow it is differential in a manner of export possess it is differential
The differential gear of mechanism.
Background technology
In the past, by the driving force of input from a pair of output links by allow it is differential in a manner of the differential gear that exports used
Differential gear as such as vehicle.In this differential gear, exist the driving force that can separate input to output link
Transmission structure.For example, referring to Japanese Unexamined Patent Publication 2015-87015 publications.
The differential gear that Japanese Unexamined Patent Publication 2015-87015 publications are recorded has：Differential attachment, there is the axle journal by shaft-like
2 differential gearings and 2 side shaft gears of supporting；House the differential casing (shell) of differential attachment；Wheel carrier key element, with can
The mode of rotation is housed in differential carrier body；Second clutch portion, it is fixed on wheel carrier key element；First clutch portion, Neng Gouyu
Engage in second clutch portion；Actuator, first clutch portion is set to be axially moveable relative to second clutch portion；Backspring,
Make first clutch portion from second clutch part from；And target key element, exerted a force by backspring.
From by welding or bolt fastening driving force is inputted to be fixed on the drive gear of outer peripheral face to differential casing.
Wheel carrier key element is provided with 2 drillings, inserts axle journal to the drilling, and be fixed by steady pin.
First clutch portion has annulus and the multiple axial projections axially protruded from annulus, axially projecting
The front end in portion sets the toothed ring sector body engaged with second clutch portion.The annulus in first clutch portion is configured in differential
The outside of device housing, axial projection are inserted through in the axial hole formed in the side wall of differential casing.Thus, the first clutch
Device portion is linked relative to differential casing in a manner of it can move axially relatively and can not rotate against.
Actuator has：Electromagnet；By the grappling key element being made up of magnetic and the sleeve combination being made up of nonmagnetic material
The piston formed.Slider disc is configured between sleeve and first clutch portion.Piston passes through its magnetic when being powered to electromagnet
Power and make first clutch portion to second clutch portion side move.When cutting off the energization to electromagnet, by via target key element
And receive backspring active force, make first clutch portion from second clutch part from.
It is axially prominent when the action by actuator moves axially and first clutch portion to second clutch portion side
The toothed ring sector body for going out portion engages with second clutch portion, and wheel carrier key element rotates integrally with differential casing.Thus, from drive
Moving gear is to the driving force that differential casing inputs via first clutch portion, second clutch portion and wheel carrier key element to differential gear
Wheel transmits.
On the other hand, when actuator turns into non-action state, due to backspring first clutch portion from second from
Clutch part from and their engagement be released from, wheel carrier key element can rotate against relative to differential casing.Thus, can separate
From differential casing to the transmission of the driving force of differential attachment.
Under the non-action state of actuator, by the active force of backspring, in slider disc and first clutch portion or
Produced between sleeve by rotating against caused friction.By the friction, abrasion may be produced in these components or produced not
The rotational resistance needed.
The content of the invention
It is an object of the present invention to provide a kind of differential gear, it is by the action of actuator and is failure to actuate and can make drive
Power cut with connect, and the friction between rotating member when being failure to actuate of actuator can be suppressed.
The differential gear of the mode of the present invention includes：
Differential casing, it can be rotatably supported in differential mechanism seat；
Differential attachment, configure in the differential carrier body, by the driving force of input from a pair of output links with tolerance
Dynamic mode exports；
Clutch component, can be between coupling position and off-position along parallel with the rotation axis of the differential casing
Direction i.e. move axially, and by can by driving force cut off with connect in a manner of from the differential casing to the differential machine
Structure transmits driving force, and the coupling position is the position for linking the differential casing and the differential attachment, the cut-out
Position is the position for cutting off the link of the differential casing and the differential attachment；
Actuator, generation make locomotivity of the clutch component along the axial movement；
Mobile force transmitting member, it is configured to move axially relative to the differential casing and relative can not revolves
Turn, and by the locomotivity of the actuator to the clutch component transmission；And
Elastic component, to the locomotivity of the actuator caused by the opposite direction of moving direction to the clutch component
Force.
The plunger that the actuator has the electromagnet of ring-type and is made up of soft-magnetic body, the electromagnet be prevented from relative to
Differential mechanism seat rotation, the plunger by the energization to the electromagnet by and caused magnetic force, making the elastic structure
Part from the first specific length be reduced into the second specific length while the plunger along the axial movement, the plunger to institute
The axial movement for stating the opposite side in clutch component side is limited by limiting member, and the limiting member has what is abutted with the plunger
Abutting part, when the elastic component is first specific length, between the plunger and the abutting part described in formation
The gap of axial direction.
According to the differential gear of aforesaid way, by the action of actuator and being failure to actuate driving force can be made to cut off and even
It is logical, and the friction between rotating member when being failure to actuate of actuator can be suppressed.
Brief description of the drawings
Before address feature of the invention and advantage described later by the explanation of following embodiment and referring to the drawings
And it is clear and definite, wherein, identical label represents identical part.
Fig. 1 is the sectional view of the configuration example for the differential gear for representing embodiments of the present invention.
Fig. 2 is the exploded perspective view of differential gear.
Fig. 3 is the top view observed vertically in the face of the inner side of the first mould component of differential casing.
Fig. 4 is the stereogram for the second mould component for representing differential casing.
Fig. 5 A are Fig. 1 partial enlarged drawings, show the non-action state of actuator.
Fig. 5 B are Fig. 1 partial enlarged drawings, show the operating state of actuator.
Fig. 6 A are the sectional views of the differential gear of variation, show the non-action state of actuator.
Fig. 6 B are the sectional views of the differential gear of variation, show the operating state of actuator.
Embodiment
On embodiments of the present invention, illustrated referring to figs. 1 to Fig. 5.
Fig. 1 is the sectional view of the configuration example for the differential gear for representing the first embodiment of the present invention.Fig. 2 is differential gear
Exploded perspective view.Fig. 3 is the top view observed vertically in the face of the inner side of the first housing member of differential casing.Fig. 4
It is the stereogram for the second housing member for representing differential casing.Fig. 5 A are Fig. 1 partial enlarged drawings, show the motionless of actuator
Make state.Fig. 5 B are Fig. 1 partial enlarged drawings, show the operating state of actuator.
The differential gear 1 in order to by the driving force of the driving sources such as the engine of vehicle by allow it is differential in a manner of it is defeated to a pair
Shaft is distributed and used.More specifically, the differential gear 1 of present embodiment is equipped on the drive for possessing and being passed driving source all the time
The pair of right and left main drive wheel (such as front-wheel) of power and be passed according to transport condition driving source driving force left and right one
To the four-wheel drive vehicle of auxiliary drive wheels (such as trailing wheel), the wheel distribution driving of the left and right to auxiliary drive wheels is normally used as
The differential gear of power.In the case where only transmitting driving force to main drive wheel, vehicle turns into two wheel drive states, to main driving
In the case that wheel and auxiliary drive wheels transmit driving force, vehicle turns into four-wheel drive state.Differential gear 1 is in four-wheel drive state
Under, the driving force of input is distributed to the power transmission shaft of the left and right of auxiliary drive wheels side.
Differential gear 1 possesses：Differential casing 2, it can rotatably be supported on via a pair of bearings 91,92 and be fixed in vehicle body
Differential mechanism seat 9 in；Differential attachment 3, configure in differential casing 2；Clutch component 4, in differential casing 2 and differential attachment
It can be cut off between 3 mill pinlon axle 30 and communicatively transmit driving force；Actuator 5, generation make what clutch component 4 was axially moveable
Locomotivity；Limiting member 6, limit the axial movement of the plunger 53 (aftermentioned) of actuator 5；Mobile force transmitting member 7, between and match somebody with somebody
Put between clutch component 4 and actuator 5, the locomotivity of actuator 5 is transmitted to clutch component 4；Packing ring 81, with clutch component
4 is chimeric；As the lock washer 82 of elastic component, to the locomotivity of actuator 5 caused by the opposite direction pair of moving direction
Clutch component 4 exerts a force.
Differential attachment 3 has：The mill pinlon axle 30 of driving force is passed from differential casing 2 via clutch component 4；It is supported by
For multiple (4) mill pinlons 31 that can be rotated around the rotation axis O of differential casing 2；A pair as a pair of output links
Side gear 32.Mill pinlon axle 30 is in actuator 5 when being failure to actuate, relative to differential casing 2 centered on shared rotation axis O
It can rotate against.The driving force that differential attachment 3 will be passed to the mill pinlon axle 30 as input link is used as output structure from a pair
The side gear 32 of part by allow it is differential in a manner of export.In the following description, it is axially the direction parallel with rotation axis O.
In the present embodiment, differential attachment 3 has a pair of mill pinlon axles 30, by the axle branch of 2 mill pinlons 31 in 4 mill pinlons 31
The mill pinlon axle 30 in a side is held, by other 2 e axle supportings of mill pinlon 31 in the mill pinlon axle 30 of the opposing party.Mill pinlon 31 and side gear 32
It is made up of bevel gear, makes gear shaft orthogonal and be intermeshed.The power transmission shaft of left and right is respectively in a manner of it can not rotate against with one
Side gear 32 is linked.It should be noted that in mill pinlon 31 and side gear 32 formed with multiple gear teeth, but in fig. 2, save
The slightly diagram of these gear teeth.
Each mill pinlon axle 30 is provided integrally with a pair of the engaged parts 301 engaged with clutch component 4, is inserted through mill pinlon 31
A pair of mill pinlon supports 302, the linking part 303 for linking a pair of mill pinlon supports 302, and it is integrally formed into shaft-like.A pair of quilts
Holding section 301 is arranged on the both ends of mill pinlon axle 30, and linking part 303 is arranged on the axial central portion of mill pinlon axle 30.Shed baby teeth for a pair
Wheel support 302 is arranged between the respective and linking part 303 of a pair of engaged parts 301, and e axle supporting is carried out to mill pinlon 31.
The central portion intermeshing of a pair of mill pinlon axles 30 axially.Specifically, a side mill pinlon axle 30 formation
Recess 300 between a pair of mill pinlon supports 302 is fitted together to the linking part 303 of the mill pinlon axle 30 of the opposing party, and the opposing party's
The recess 300 being formed between a pair of mill pinlon supports 302 of mill pinlon axle 30 is fitted together to the linking part 303 of the mill pinlon axle 30 of a side.
In the rotation axis O observations along differential casing 2, a pair of mill pinlon axles 30 are mutually orthogonal.
Clutch component 4 is its center axis cylindrical shape consistent with the rotation axis O of differential casing 2, and steel are carried out
Forge and formed.Moreover, a pair of mill pinlon axles 30 of the clutch component 4 relative to differential attachment 3, in the rotation along differential casing 2
Possibility can be relatively moved on shaft axis O central axis direction, and rotates against and is restricted.
Clutch component 4 is provided integrally with：In first with multiple engaging tooths 411 that the one end of central axis direction is set
Engaging piece 41；The inward flange portion 42 for the ring-type being provided projectingly to the interior side of the first engaging piece 41；And formed with circumferentially with mill pinlon
The cylindrical portion 43 for the holding section 430 that axle 30 engages.First engaging piece 41 with located at the second engaging piece 223 of differential casing 2 (after
State) circumferentially engage.The axial end in inward flange portion 42 abuts with lock washer 82, receives the active force of lock washer 82.Card
Conjunction portion 430 is penetrated between the inner and outer circumferential surfaces of cylindrical portion 43, forms the groove as the central axis direction extension along clutch component 4.
Engage in the engaged part 301 that the both ends of mill pinlon axle 30 are set with holding section 430.By engaged part 301 with
Holding section 430 engages, to limit the rotating against relative to clutch component 4 of mill pinlon axle 30.Clutch component 4 is relative to mill pinlon axle 30
It can relatively move and can not rotate against on the central axis direction along rotation axis O.Multiple mill pinlons 31 can be around difference
The rotation axis O of fast device housing 2 rotates (revolution) together with clutch component 4.In the present embodiment, in order that in a pair of mill pinlons
The engaged part 301 that the respective both ends of axle 30 are set engages with clutch component 4, and forms 4 holding sections in cylindrical portion 43
430。
Multiple mill pinlons 31 back side 31a and clutch component 4 cylindrical portion 43 inner peripheral surface 43a between be configured with packing ring
33.The inner surface 33a relative with the back side 31a of mill pinlon 31 of packing ring 33 is partial sphere planar, the cylindrical portion 43 with clutch component 4
The relative outer surface 33b of inner peripheral surface 43a be plane.When mill pinlon 31 rotates (rotation) centered on mill pinlon axle 30, mill pinlon
31 back side 31a is slided on the inner surface 33a of packing ring 33.Moreover, when clutch component 4 relative to mill pinlon axle 30 along central shaft side
To during movement, the inner peripheral surface 43a of the cylindrical portion 43 of clutch component 4 is slided on the outer surface 33b of packing ring 33.Cylindrical portion 43 it is interior
The side face 43a part slided on the outer surface 33b of packing ring 33 is formed as plane.
Mobile force transmitting member 7 is configured to move axially and can not rotate against relative to differential casing 2, has
Circular base portion 71 and multiple axle portions 72 for being axially extended from base portion 71 in the exterior arrangement of differential casing 2.At this
In embodiment, 4 axle portions 72 are circumferentially set at a prescribed interval on mobile force transmitting member 7.Mobile force transmitting member 7
It is made up of nonmagnetic material, punch process is carried out to the steel plate being for example made up of austenite stainless steel and formed.Before axle portion 72
Rolled over to internal diameter lateral bending end (end of the side opposite with the base end part of the side of base portion 71).
In addition, the packing ring of section L-shaped is configured between the leading section of axle portion 72 and the cylindrical portion 43 of clutch component 4
81.The round plate 812 that axial one end of the packing ring 81 with cylindric cylinder portion 811 and from cylinder portion 811 inwardly just extends, cylinder portion
811 are fitted and fixed with the cylindrical portion 43 in clutch component 4.The leading section of the axle portion 72 of mobile force transmitting member 7 and the circle of packing ring 81
Pan portion 812 abuts.
Actuator 5 has：The electromagnet 51 of ring-type, have and produce the coil 511 of magnetic flux and covering coil by being powered
511 resin component element 512；Yoke 52, keep electromagnet 51；Plunger 53, it is axially moveable together with clutch component 4.Electromagnet
51st, yoke 52, plunger 53 are configured in the outside of differential casing 2.The section along rotation axis O of electromagnet 51 is shaped as
Rectangular shape.Electromagnet 51 is for for example being moulded the coil 511 that enamel-covered wire winding forms come shape by resin component element 512
Into.
Plunger 53 is axially moveable using by magnetic force caused by the energization to electromagnet 51, makes the edge of clutch component 4
The direction movement that the first engaging piece 41 engages with the second engaging piece 223 of differential casing 2.Clutch component 4 is by via shifting
The locomotivity for the actuator 5 that power transfer member 7 transmits, makes the first engaging piece 41 be engaged with the second engaging piece 223.
Plunger 53 is made up of soft-magnetic bodies such as mild steel, is provided integrally with：Configuration the periphery of electromagnet 51 and and electromagnetism
The diametrically opposite outside cylindrical portion 531 as the first cylindrical portion of iron 51；From the axial one end in outside cylindrical portion 531 to
Footpath inwardly projecting and the side of sidewall portion 532 formed；It is prominent outward from the axial the other end in outside cylindrical portion 531 to footpath and
The flange part 533 of formation.Outside cylindrical portion 531 is the cylindrical shape with the inner peripheral surface parallel with the outer peripheral face of electromagnet 51.
The inner peripheral surface in the outside cylindrical portion 531 of plunger 53 is contacted and propped up with the outer peripheral face of the resin component element 512 of electromagnet 51
Hold in electromagnet 51.When plunger 53 is axially moveable, the outer peripheral face of the inner peripheral surface in outside cylindrical portion 531 in resin component element 512
Upper slip.That is, plunger 53 is contacted by the inner peripheral surface in outside cylindrical portion 531 with the outer peripheral face of the resin component element 512 of electromagnet 51
And radial support is in resin component element 512.
Yoke 52 is made up of soft magnetic metals such as mild steel, is provided integrally with：And and post diametrically opposite with electromagnet 51
The inside cylindrical portion 521 as the second cylindrical portion of electromagnet 51 is clamped between the outside cylindrical portion 531 of plug 53；From inside cylindrical
The annulus tabular that the axial one end in portion 521 radially extends and covers the axial end of a side of resin component element 512
Lip portions 522.Inside cylindrical portion 521 is the cylindrical shape of the axle centered on rotation axis O, is configured in differential casing 2 and electromagnetism
Between iron 51.Lip portions 522 extend outward from the one end in inside cylindrical portion 521, and between the side of sidewall portion 532 of plunger 53
Axially clamp electromagnet 51.
Electromagnet 51 is prevented from rotating and is held in yoke 52 relative to differential mechanism seat 9, via from located at resin component element 512
The electric wire that omits of the derived diagrams of boss portion 512a (reference picture 2) and supply exciting current to coil 511.To coil 511
During energization, by being axially moveable with yoke 52 and plunger 53 for the magnetic flux of magnetic circuit and plunger 53, actuator 5 turns into action shape
State.
The internal diameter in the inside cylindrical portion 521 of yoke 52 forms portion that must be more relative than with the inner peripheral surface in the inside cylindrical portion 521
The external diameter of the differential casing 2 divided is slightly larger.Thus, differential casing 2 rotates freely relative to yoke 52.
Limiting member 6 is fixed with the end of the side opposite with lip portions 522 in the inside cylindrical portion 521 of yoke 52.
Limiting member 6 is made up of the nonmagnetic material such as austenite stainless steel, is provided integrally with the inside cylindrical portion 521 of yoke 52
The fixed part 61 of ring-type fixed of periphery and at multiple positions (being in the present embodiment 2 positions) of circumference from fixed part
61 a pair of the tabs 62 for axially protruding and being formed.Tab 62 has engaging portion 621 and an abutting part 622, and the engaging portion 621 is locking
In the recess 90 of differential mechanism seat 9, the abutting part 622 abutted with the side of sidewall portion 532 of plunger 53 and limit plunger 53 to clutch
The axial movement of the opposite side in the side of component 4.Limiting member 6 is limited relative to difference by engaging portion 621 engaging in recess 90
The axial movement of fast device seat 9 and rotate against.Abutting part 622 is by the way that a part for tab 62 is cut to be formed.
The fixed part 61 of limiting member 6 has the teat 610 that is provided projectingly in the end of its internal side diameter, the teat 610 with
Engage in the recess 520 that the inside cylindrical portion 521 of yoke 52 is formed and be prevented from rotating.2 teats are provided with fixed part 61
610, these teats 610 engage respectively with the recess 520 formed at two positions of inner side cylindrical portion 521, but in fig. 2,
Illustrate 1 teat 610 and recess 520 therein.Moreover, fixed part 61 is axially clamped in the inside cylindrical portion with yoke 52
Between the 521 circular stop collars 50 and electromagnet 51 combined, it is determined relative to the axial position of yoke 52.Stop collar
50 are fixed on the outer peripheral face in the inside cylindrical portion 521 of yoke 52 for example, by welding.
Plunger 53 side of sidewall portion 532 formed with：A pair of inserting holes for making a pair of tabs 62 of limiting member 6 insert respectively
532a；The through hole 532b of the boss portion 512a insertions of electromagnet 51；Make the multiple (in the example shown in Fig. 2 of lubricating oil flow
In be 10) oilhole 532c.Electromagnet 51 is penetrated to be prevented relative to yoke 52 by boss portion 512a in through hole 532b
Spin-ended turn.Moreover, plunger 53 is inserted and relative to the quilt of differential mechanism seat 9 by the tab 62 of limiting member 6 in inserting hole 532a
Prevent from rotating.
Differential casing 2 has the second housing member 22 of discoid the first housing member 21 and bottomed cylindrical.The
One housing member 21 is inaccessible by the opening of the second housing member 22.In the housing structure of a pair of side gears 32 and first of differential attachment 3
The packing ring 34 of ring flat-plate shape is respectively configured between the housing member 22 of part 21 and second.Imported to the inside of differential casing 2 to differential
The lubricating oil (differential oil) that mechanism 3 is lubricated.
As shown in figure 4, the second housing member 22 is provided integrally with is contained in inner side by differential attachment 3 and clutch component 4
Cylindrical portion 221, the first engaging piece from the bottom 222 that the axial one end of cylindrical portion 221 inwardly just extends, with clutch component 4
Second engaging piece 223 of 41 engagements, the flange part 224 extended outward from axial the other end of cylindrical portion 221.In cylindrical portion
221 formed with the multiple oilhole 221a for making lubricating oil flow.Bottom 222 formed with：For with the side in a pair of side gears 32
Side gear 32 connect to can not rotate against power transmission shaft insertion shaft insertion hole 222a；And house the ring-type of lock washer 82
Groove 222b.
Second engaging piece 223 is made up of the multiple engaging tooth 223a circumferentially, equally spaced set, is arranged on the second housing
The side of bottom 222 of component 22.In the present embodiment, multiple engaging tooth 223a axially protrude shape from the inner surface of bottom 222
Into.Lock washer 82 exerts a force to clutch component 4 to the direction separated from the bottom 222 of the second housing member 22.
First housing member 21 is provided integrally with：The axially opposed round plate with the bottom 222 of the second housing member 22
211；The flange part 212 supported is touched with the flange part 224 of the side of the second housing member 22.In round plate 211 formed with confession and an offside
The side gear 32 of the opposing party in gear 32 connects to the shaft insertion hole 211a for the power transmission shaft insertion that can not be rotated against.Moreover,
Round plate 211 formed with：From the outer surface of the opposite side of the opposite face relative with bottom 222 of the second housing member 22 along axle
The endless groove 211b formed to depression；And connected with endless groove 211b and penetrate multiple through holes of round plate 211 vertically
211c。
Electromagnet 51, yoke 52, plunger 53 and locomotivity, which are contained, in the endless groove 211b of the first mould component 21 transmits structure
A respective part for part 7.The base portion 71 of mobile force transmitting member 7 is configured in endless groove 211b, and multiple axle portions 72 are inserted respectively
Pass through multiple through hole 211c of the first mould component 21.Mobile force transmitting member 7 is inserted through through hole by multiple axle portions 72
211c and relative to the first mould component 21 by radial support.
From the gear ring 23 (reference picture 1) of the ring-type of the fixation of flange part 212,224 in first and second housing member 21,22
Driving force is inputted to differential casing 2.Gear ring 23 is fixed on the side of flange part 224 of the cylindrical portion 221 of the second housing member 22
Periphery.In the present embodiment, by the first housing member 21 flange part 212 formed multiple bolt insertion hole 212a and
The multiple fastening bolts inserted respectively in multiple bolt insertion hole 224a that the flange part 224 of the second housing member 22 is formed
24, gear ring 23 is fixed into and rotated integrally with differential casing 2.The housing member 21 of head 241 and first of fastening bolt 24
Flange part 212 abuts, formed with externally threaded axle portion 242 insert bolt insertion hole 212a, 224a and with the screwed hole of gear ring 23
23a is screwed togather.
Differential gear 1 is by the action of actuator 5 and is failure to actuate, to switch connecting state and not connecting state, the link
State be the first engaging piece 41 with the second engaging piece 223 circumferentially engage and clutch component 4 connected to differential casing 2 can not
The state rotated against, the not connecting state state that to be clutch component 4 can rotate against with differential casing 2.
Do not supply when being failure to actuate of actuator 5 of exciting current to the coil 511 of electromagnet 51, pass through lock washer 82
Recuperability and clutch component 4 moves to the side of round plate 211 of the first mould component 21, the first engaging piece 41 and the second engaging piece
223 engagement is released from.In the actuator 5 when being failure to actuate, differential casing 2 can rotate against with clutch component 4, therefore
Transmission from from differential casing 2 to the driving force of the mill pinlon axle 30 of differential attachment 3 is cut off.Thus, it is input to difference from gear ring 23
The driving force of fast device housing 2 does not turn into two wheel drive states to power transmission shaft transmission, vehicle.
On the other hand, when supplying exciting current to the coil 511 of electromagnet 51, the magnetic circuit M shown in the dotted line in Fig. 5 B
Produce magnetic flux.Also, by the magnetic force of electromagnet 51, plunger 53 is axially moveable, so that the side of sidewall portion 532 and yoke of plunger 53
The axial end 521a in 52 inside cylindrical portion 521 is approached.Thus, the axial length of lock washer 82 contracts from the first specific length
Short is the second specific length, and clutch component 4 is via mobile force transmitting member 7 and by the bottom 222 of the second mould component 22
Side presses, and the first engaging piece 41 engages with the second engaging piece 223.The flange of the base portion 71 and plunger 53 of mobile force transmitting member 7
Portion 533 abuts, and receives axial locomotivity from plunger 53.
So, clutch component 4 engages in engaging tooth 411 with the second engaging piece 223 of differential casing 2 coupling position and
It can be axially moveable between engaging tooth 411 and the 223 out of mesh not coupling position of the second engaging piece of differential casing 2.And
And the one side of plunger 53 makes lock washer 82 be reduced into the second specific length from the first specific length, while being axially moveable.
When the first engaging piece 41 engages with the second engaging piece 223, the second shell of differential casing 2 is input to from gear ring 23
The driving force of component 22 via clutch component 4, a pair of mill pinlon axles, 30,4 mill pinlons 31 of differential attachment 3 and a pair of side gears 32 to
Power transmission shaft transmission, vehicle turn into four-wheel drive state.
In cut-off when being failure to actuate of actuator 5 of the energization to electromagnet 51, the axial length of lock washer 82 is the
One specific length.In the present embodiment, first specific length is anti-under 82 un-compressed nature of lock washer
The axial length of loose packing ring 82.Also, under the nature of the lock washer 82, as shown in Figure 5A, clutch component 4, movement
Force transmitting member 7 and plunger 53 are with the side of the loosening with axial direction between lock washer 82 and the abutting part 622 of limiting member 6
Formula configures.
In fig. 5, between the axle portion 72 of the packing ring 81 chimeric with clutch component 4 and mobile force transmitting member 7, movement
Between the base portion 71 of force transmitting member 7 and the flange part 533 of plunger 53 and the side of sidewall portion 532 of plunger 53 and supporting for limiting member 6
Between socket part 622, the state in the gap formed with axial direction is shown respectively.But these gaps and nonessential, as long as will not pass through
The active force of lock washer 82 and by component each other vertically mutually pressing, can adjoin one another, such as can pass through
The retained magnetic forces of plunger 53 and the flange part 533 of plunger 53 will not produce abrasion with the base portion 71 in mobile force transmitting member 7
The power of degree is gently contacted.That is, configured in a manner of the loosening with axial direction and refer to clutch component 4, mobile force transmitting member 7
And plunger 53 this each component will not be pressed mutually and configuration side by side vertically vertically, avoid producing the rotation for the degree that can not ignore
Turn resistance (frictional force) and rotate against freely.
In the present embodiment, the respective axially length of clutch component 4, mobile force transmitting member 7 and plunger 53 is added
Length be set to it is shorter than the axial distance between the lock washer 82 and the abutting part 622 of limiting member 6 under nature, so as to
Realize the structure that above-mentioned each component is configured in a manner of the loosening with axial direction.Thus, lock washer 82 is nature
During the first specific length, axial gap is formed between the side of sidewall portion 532 of plunger 53 and the abutting part 622 of limiting member 6.
Embodiment from the description above, when lock washer 82 is the first specific length, clutch component 4, locomotivity
Transmission member 7 and plunger 53 between lock washer 82 and the abutting part 622 of limiting member 6 in a manner of having the loosening of axial direction
Configuration.Thus, when being failure to actuate of actuator 5 being cut off in the energization to electromagnet 51, even if above-mentioned each component rotates against
Also the rotational resistance as caused by friction will not be produced, each component swimmingly rotates against and can suppress abrasion.
Next, the variation on first embodiment, reference picture 6 illustrates.
Fig. 6 A are the sectional views that device is moved with Fig. 5 quite poors of first embodiment, show the shape of being failure to actuate of actuator 5
State, Fig. 6 B are the sectional views that device is moved with Fig. 5 quite poors of first embodiment, show the operating state of actuator 5.Scheming
In 6A, Fig. 6 B, the inscape shared on the inscape with illustrating in first embodiment, mark same symbol and omit
The explanation repeated.
In the first embodiment, the first specific length for illustrating the lock washer 82 during the no power of electromagnet 51 is
The situation of the axial length under un-compressed nature vertically of lock washer 82, but in this variation, in electromagnetism
During the no power of iron 51, lock washer 82 is also compressed vertically.That is, in this variation, actuator 5 is prevented when being failure to actuate
The axial length of loose packing ring 82 is that the first specific length is shorter than the natural length of lock washer 82.
Therefore, clutch component 4 receives the active force of lock washer 82 all the time, is pressed to the side of actuator 5, but in this change
In shape example, packing ring 81 abuts vertically with the axial end 211d of the round plate 211 of the first mould component 21, thus, it is possible to suppress locking
Transmission of the active force of packing ring 82 to mobile force transmitting member 7 and plunger 53.Therefore, it is same with first embodiment, locking
When packing ring 82 is the first specific length, formed axially between the side of sidewall portion 532 of plunger 53 and the abutting part 622 of limiting member 6
Gap.Thus, mobile force transmitting member 7 will not mutually be pressed with plunger 53 due to the active force of lock washer 82, can be entered
Row rotates against, and suppresses abrasion.
It should be noted that packing ring 81 by the active force of lock washer 82 and the axial end with the first mould component 21
211d is abutted, thus when clutch component 4 rotates relative to the first mould component 21, axial end of the packing ring 81 in the first mould component 21
Slided on the 211d of face, but the clutch component 4 and packing ring 81 during the traveling of two wheel drives and the first mould component 21 rotate against
Speed is lower with the relative rotational of plunger 53 than mobile force transmitting member 7, therefore will not in the mould component 21 of packing ring 81 or first
Produce the abrasion for the degree that the action to differential gear impacts.
More than, the present invention is illustrated based on embodiment, but the present invention is not defined to the embodiment, is not taking off
Being capable of appropriate deformation implementation from the range of the purport of the present invention.For example, in the above-described embodiment, illustrate in actuator
During 5 action, clutch component 4 is connected to differential casing 2 and can not rotated against, in actuator 5 when being failure to actuate, clutch component
4 situations about can be rotated against with differential casing 2, but can also in contrast, in actuator 5 when being failure to actuate, clutch structure
Part 4 is linked with differential casing 2 by the active force of lock washer 82.Moreover, in the above-described embodiment, illustrate post
Plug 53 configures the situation in the outer circumferential side of yoke 52, but can also configure plunger 53 in the inner circumferential side of yoke 52.
Claims (6)
1. a kind of differential gear, including：
Differential casing, can rotatably it be supported in differential mechanism seat；
Differential attachment, configure in the differential carrier body, the driving force of input is differential to allow from a pair of output links
Mode exports；
Clutch component, can be between coupling position and off-position along the side parallel with the rotation axis of the differential casing
To moving axially, and by driving force can be cut off with connect in a manner of pass from the differential casing to the differential attachment
Pass driving force, the coupling position is the position for linking the differential casing and the differential attachment, the off-position
It is the position for cutting off the link of the differential casing and the differential attachment；
Actuator, generation make locomotivity of the clutch component along the axial movement；
Mobile force transmitting member, is configured to move axially and can not rotate against relative to the differential casing,
And by the locomotivity of the actuator to the clutch component transmission；And
Elastic component, to the locomotivity of the actuator caused by moving direction opposite direction the clutch component is applied
Power, wherein,
The plunger that the actuator has the electromagnet of ring-type and is made up of soft-magnetic body, the electromagnet are prevented from relative to institute
The rotation of differential mechanism seat is stated, the plunger by the energization to the electromagnet by and caused magnetic force, making the elastic component
The plunger is along the axial movement while being reduced into the second specific length from the first specific length,
Axial movement of the plunger to the side opposite with the clutch component side is limited by limiting member, the limiting member
With the abutting part abutted with the plunger,
When the elastic component is first specific length, the axial direction is formed between the plunger and the abutting part
Gap.
2. differential gear according to claim 1, wherein,
The yoke that the electromagnet is made up of soft-magnetic body is kept,
The limiting member has the abutting part, is fixed on the fixed part and engaging portion of the yoke, and the engaging portion is locking
Limited in the differential mechanism seat relative to rotating against for the differential mechanism seat, the limiting member suppresses the electromagnet
Relative to rotating against for the differential mechanism seat.
3. differential gear according to claim 1 or 2, wherein,
First specific length of the elastic component is axial under the un-compressed nature of the elastic component
Length,
When the elastic component is first specific length, in the clutch component and the elastic component and the differential
Gap is formed between device housing.
4. differential gear according to claim 1 or 2, wherein,
The plunger has the side of sidewall portion of the first cylindrical portion and annulus tabular, and first cylindrical portion is with the electromagnet radially
Upper relative, the side of sidewall portion radially extends from first cylindrical portion,
The yoke has the second cylindrical portion and a lip portions, second cylindrical portion it is diametrically opposed with the electromagnet and
The electromagnet is clamped between first cylindrical portion, the lip portions are between the side of sidewall portion of the plunger along institute
State and axially clamp the electromagnet,
When the electromagnet is energized, the plunger is by being the magnetic flux of magnetic circuit and along described using the plunger and the yoke
Axial movement.
5. differential gear according to claim 1 or 2, wherein,
The mobile force transmitting member has circular base portion and from the base portion along axially extending multiple axle portions, institute
Axle portion is stated to be inserted through along the through hole axially through the differential casing.
6. differential gear according to claim 1 or 2, wherein,
The differential attachment have relative to the clutch component rotate against confined mill pinlon axle, e axle supporting is sheded baby teeth in described
Multiple mill pinlons of wheel shaft and a pair of the side gears as the pair of output link engaged with the multiple mill pinlon,
The clutch component has the engaging tooth that the engaging piece with the inner surface formation in the differential casing engages, and can
Moved axially relative to the mill pinlon axle.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016137046A JP6759782B2 (en) | 2016-07-11 | 2016-07-11 | Driving force transmission device and differential device |
| JP2016137047A JP6780332B2 (en) | 2016-07-11 | 2016-07-11 | Differential |
| JP2016-137047 | 2016-07-11 | ||
| JP2016-137046 | 2016-07-11 | ||
| JP2016157559A JP2018025239A (en) | 2016-08-10 | 2016-08-10 | Differential device |
| JP2016-157559 | 2016-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107606101A true CN107606101A (en) | 2018-01-19 |
Family
ID=61059730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710555635.1A Pending CN107606101A (en) | 2016-07-11 | 2017-07-10 | Differential gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107606101A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100093481A1 (en) * | 2008-10-10 | 2010-04-15 | Randy's Ring & Pinion | Locking differential having improved clutch teeth |
| CN103375506A (en) * | 2012-04-24 | 2013-10-30 | 福特全球技术公司 | Electromagnetically actuated clutch |
| CN104565280A (en) * | 2013-10-15 | 2015-04-29 | 伊顿公司 | Mechanically actuated positive locking differential |
| US20150114786A1 (en) * | 2013-10-29 | 2015-04-30 | Gkn Driveline International Gmbh | Drive assembly with a clutch |
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2017
- 2017-07-10 CN CN201710555635.1A patent/CN107606101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100093481A1 (en) * | 2008-10-10 | 2010-04-15 | Randy's Ring & Pinion | Locking differential having improved clutch teeth |
| CN103375506A (en) * | 2012-04-24 | 2013-10-30 | 福特全球技术公司 | Electromagnetically actuated clutch |
| CN104565280A (en) * | 2013-10-15 | 2015-04-29 | 伊顿公司 | Mechanically actuated positive locking differential |
| US20150114786A1 (en) * | 2013-10-29 | 2015-04-30 | Gkn Driveline International Gmbh | Drive assembly with a clutch |
| JP2015087015A (en) * | 2013-10-29 | 2015-05-07 | ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツングＧＫＮ Ｄｒｉｖｅｌｉｎｅ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ | Drive assembly including clutch and method for attaching drive assembly |
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Application publication date: 20180119 |