CN1395051A - Electric exciting locking differential mechanism - Google Patents
Electric exciting locking differential mechanism Download PDFInfo
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- CN1395051A CN1395051A CN02126263A CN02126263A CN1395051A CN 1395051 A CN1395051 A CN 1395051A CN 02126263 A CN02126263 A CN 02126263A CN 02126263 A CN02126263 A CN 02126263A CN 1395051 A CN1395051 A CN 1395051A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/295—Arrangements for suppressing or influencing the differential action, e.g. locking devices using multiple means for force boosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H2048/204—Control of arrangements for suppressing differential actions
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Retarders (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The present invention relates to an electronically actuated locking differential, a differential gear mechanism including a first output gear (25), and a cam and ramp actuator (55) including first (59) and second (63) actuating plates, relative rotation of which results in axial movement of said first plate (59) toward said first output gear (25). The mechanism includes an electromagnetic actuator (57) operable to cause rotation of the second actuating plate (63), relative to a gear case (11). Both actuating plates (59, 63) are disposed external to an end wall (53) of the gear case, the first actuating plate (59) having a plurality of actuation members (85) extending axially through openings (81) in the end wall. A locking plate (41) is disposed adjacent the first output gear (25), and is fixed to be non-rotatable relative to the gear case, but axially moveable therein. The output gear (25) defines an array of teeth (39) and the locking plate (41) defines a plurality of recesses (43), adapted to receive the teeth, and lock the locking plate (41) relative to the output gear whenever the cam and ramp actuator (55) and the actuation members (85) move the locking plate to a locked position (figure 4).
Description
MULTIPLE-BLADE
The application is the subsequent application of U.S.'s series application number 09/484160, and the applying date is on January 18th, 2000, and the China invites the person is Ross K.Cheadle and Joseph F.Rosiek, and denomination of invention is " electric exciting locking differential mechanism ".
Open background
The present invention relates to a kind of traction correction differential mechanism, particularly a kind of like this differential mechanism of pattern, promptly differential gear wherein can respond an electrical input signal and by locking.
This traction correction differential mechanism that The present invention be more particularly directed to comprises that one is formed with the gear-box of gear cavity, wherein is provided with differential gear mechanism, and this device comprises an input small gear and a secondary outlet side gear at least.Between at least one side gear and the gear-box surface closed on, be provided with clutch pack especially, but so that the relative rotation between operated clutch assembly and limiting gear case and the side gear.In described most of differential mechanisms, the joint of clutch pack reaches by one of several diverse ways.
In one approach, can describe a kind of " locking differential mechanism " of explanation in U. S. Patent № .Re28004 with reference to transferring the assignee of the present invention here, its clutch pack is clutch in due form.When a wheel began with respect to another wheel idle running, a velocity pick-up mechanism passed through the difference of leaning device induction speed, this clutch pack of locking securely.So the output of different rotary all is same speed.
Also transfer assignee of the present invention's U. S. Patent № .5019021, only for reference here, another kind of method is disclosed, promptly a kind of " limited slip differential ", wherein the loading of clutch pack can change in response to the electrical signal of an outside input, so total biased torque is transferred to another from a side gear.Just as known for one of ordinary skill in the art, especially, in limited slip differential, when vehicle is in non-best traction condition, between two side gears, exist a certain amount of " slip " or speed poor.
In general, although the performance of above-mentioned limited slip shown in the patent in one's power and locking differential mechanism is satisfactory, to being used for the certain situation of vehicle, also there is certain shortcoming in every kind of particular design.At least one, be two in typical case, the use of clutch pack, the result has increased the differential mechanism resulting cost, particularly under the situation that some independent clutch plate are set at least, these clutch plate have relatively complicated friction material, can stand the rising of temperature under the continuous sliding condition.
In addition, many occasions that are applied to vehicle are desirable to provide a kind of traction correction differential mechanism, to replace existing open type differential mechanism, but this traction correction differential mechanism must be installed in the same space that existing open type differential mechanism occupies, to avoid all redesigning the tool surrounding structure.In this case, do not redesign small gear and side gear, and reduce their size, it is impossible installing one or two clutch pack additional in an existing case of differential, and this is very infeasible.
As a kind of trial that overcomes above-mentioned differential mechanism shortcoming, assignee of the present invention has developed a kind of improved locking differential mechanism, this differential mechanism has description in early an application, this application and father of the present invention application early belongs to the series application, being disclosed publication now is the U. S. Patent 6083134 of " electric exciting locking differential mechanism " for denomination of invention, this patent has transferred assignee of the present invention, and is only for reference here.In the device of this patent statement, an electromagnetic coil starts the tilting action of ball tilt actuators, and a hang plate of this actuator is arranged on outside the differential mechanism, and another hang plate is arranged within the differential mechanism.A series of balls cooperate with this two hang plate, and these balls are set in the slightly bigger hole of differential mechanism casing end wall.This hang plate that is arranged in the differential box constitutes a series of tooth, when the ball tilt actuators from its common centering position displacement during to oblique position, a series of teeth that constitute on the side gear that these teeth close on it mesh.
Although the differential mechanism of this patent statement provides a kind of improved locking differential mechanism, it can be activated in response to the electrical signal of an outside, and clutch soon, and structure is very compact, yet, be applied to the occasion of vehicle at some, this differential mechanism, mainly refer to casing, do not have the part of cutting away for the ball that the ball actuator is installed on the enough intensity, particularly end wall.
The problem that locking differential mechanism is usually directed to is that when no longer needing, differential mechanism is from the ability of locking states disengaging.Especially, locking differential mechanism should have in response to such as torque reversal and the ability of release.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of locking differential mechanism that the plain edition differential mechanism of describing in the above-mentioned patent is further improved, but it has through improved bulk strength and torque transmission capacity.
A more special purpose of the present invention provides so a kind of locking differential mechanism, and it must cut away size partly by reducing on the casing end wall that ball tilt actuators institute is installed basically, reaches the foregoing invention purpose.
A relevant purpose of the present invention provides a kind of like this differential mechanism, and it can be in response to an electrical input signal by locking.
Above and other purpose of the present invention reaches by a kind of differential gear mechanism is set, and this mechanism comprises a gear-box, and this box-shaped becomes a running shaft and a gear cavity.Differential gear mechanism just is arranged in this chamber, and comprises an input gear and first and second output gears at least.This mechanism comprises and operationally limits counterrotating mechanism between first output gear and the gear-box with its rotation.This mechanism also comprises the actuating mechanism of this rotation limting mechanism, this actuating mechanism comprises first and second actuation plates, it is made up of a cam and a tilting actuator, wherein first and second actuation plates move to an engaging position to the rotation limting mechanism effectively from the relative rotation of a non-actuated condition to actuating state.In non-actuated condition, this second actuation plate is set to the gear-box rotation, near this second actuation plate one electromagnetic actuators is set, so that in response to an electrical input signal, this second actuation plate is rotated with respect to gear-box.
Improved differential gear mechanism is characterised in that first and second actuation plates are set at gear-box end wall outside, and this first actuation plate can move axially towards this end wall, and has by the axially extended a plurality of corresponding actuating component of respective aperture in this end wall.The rotation limting mechanism comprises a fixing locking part with the rotation of first output gear.This locking part and a plurality of actuating component cooperate, when first actuation plate is shifted to end wall, actuating component is moved towards a locked position relative to first output gear, provide first output gear is locked in the mechanism of rotational position not with respect to this uni-drive gear box.
Summary of drawings
Fig. 1 is the axial cross section of locking differential mechanism under deactivated, non-locking situation that teaching is made according to the present invention.
Fig. 2 is that axial cross section is amplified in the part that is similar to Fig. 1, but takes from the plane that is different among Fig. 1.
Fig. 3 is the perspective view of locking plate of the present invention, and a special aspects of the present invention is described.
Fig. 4 is another local schematic cross-sectional of amplifying, and ball ramp actuator, side gear and latch under actuating, locking condition are described.
Fig. 5 is that axial cross section is amplified in the part that is similar to Fig. 2, but selection embodiment of the present invention is described.
Fig. 6 is that axial cross section is amplified in selection embodiment's shown in Figure 5 part, but takes from the plane that is different among Fig. 5.
The detailed description of most preferred embodiment
Description, its purpose and unrestricted the present invention, Fig. 1 is the axial cross section according to locking differential mechanism of the present invention.The structure and the operation of plain edition differential mechanism shown in Figure 1 are by being more readily understood with reference to above-mentioned patent.
Differential gear mechanism shown in Fig. 1 (locking differential mechanism) comprises a gear-box 11, and it forms a gear cavity, represents with 13 generally.In first embodiment, only limit to for example, in fact this gear-box comprises two box elements that separate, typically, these two elements are with the bolt (not shown) that links together.Typically, moment of torsion is by annular input gear (also not shown here) input, and its available suitable mechanism as a plurality of bolts (also not shown), is connected to the flange 15 of gear-box 11 here.
Differential gear mechanism is arranged in the gear cavity 13, comprises a secondary input small gear 17, is installed in rotationally on the pinion shaft 19.Typically, pinion shaft 19 as spring bolt (not shown) or trip ring (see figure 2), is relatively fixed to gear-box 11 by the device of any appropriate here.Small gear 17 constitutes the input gear of differential gear mechanism, with a secondary side gear 23 and 25 engagements.Side gear 23 and 25 is the lineal shape of portion's formation within it spline 27 and 29 respectively, and these splines are used for cooperating with the external splines of an accessory whorl axle (not shown).Gear-box comprises the hub portion 31 and 33 of annular, and a supplementary bearing device (not shown here) can be installed on it, is used to provide box of tricks and supports with respect to the rotation of box of tricks seat (also not shown here).
As well known to those of ordinary skill in the art, between normal epoch, vehicle is kept straight on forward, does not have the speed difference to occur between left and right side gear 23 and 25, so small gear 17 does not rotate with respect to pinion shaft 19.Gear-box 11, small gear 17, and side gear 23 and 25 is done as a whole around running shaft A rotation.
Should be appreciated that locking differential mechanism of the present invention can be worked under two kinds of patterns.The one, manually-operable, that is the driver manually selects the locking pattern, and differential mechanism is moved at the beginning at vehicle, just works under the locking pattern immediately.Two are selected at work under the automatic mode, only as an example, and car microprocessor induction operating conditions, the initial sliding of wheel for example, and transmit a suitable electrical input signal to locking differential mechanism, make side gear 25 and gear-box 11 relative lockings, to stop further speed poor.
Will be appreciated that under the self actuating situation of locking differential mechanism, under certain operating conditions, as turn inside diameter, or there is Light Difference in the tire size, the poor permission of a certain amount of speed of appearance between side gear 23 and 25.Yet, according to an important aspect of the present invention, locking differential mechanism shown in Figure 1 does not comprise that any clutch pack or other only stop or limit the mechanism of speed difference effect, and generation " open type differential " pattern of deactivated or actuating, work under the locking pattern.
Still mainly referring to accompanying drawing 1, but existing in conjunction with the accompanying drawings 2, locking differential mechanism of the present invention comprises a rotation limting mechanism, represents with 35 generally, all is arranged in the gear-box 11.This locking differential mechanism also comprises an actuating mechanism, represents with 37 generally, and they are set at the outside of gear-box 11, and are described in detail as the back.
Still the main reference accompanying drawing 2, and this rotation limting mechanism 35 comprises side gear 25, and it comprises the gear teeth 39 of a circle around running shaft A.Should be appreciated that although wheel tooth is best, the special tectonic of tooth is not an essential characteristic of the present invention, in fact,, can use the structure of non-tooth within the scope of the invention as what in selection embodiment of the present invention, describe in detail subsequently.Being provided with near the gear teeth 39 and in face-to-face mode, is a ring lock closing plate 41 (also seeing Fig. 3), shown in Fig. 1 and Fig. 2 is being locking plate and the gear teeth 39 out-of-gear situations.As shown in best in Fig. 3, this ring lock closing plate 41 comprises a plurality of grooves 43, and it only partly extends on the axial thickness of plate 41.
Locking plate 41 comprises a series of lug 45 (only shown in Fig. 1 and 3).Best, this lug is contained in (see figure 1) in the mating part that cuts away 47 that forms on the gear-box, so that locking plate 41 do not rotate with respect to gear-box, but can move axially therein.
Mainly referring to accompanying drawing 1, gear-box is supporting a plurality of spring supports 49 (Fig. 1 illustrates wherein two) again.Best, 4 lugs on the corresponding locking plate 41 are provided with 4 members 49.Right-hand member (among Fig. 1) at each spring supporting member 49 is provided with compression disc spring 51.When locking plate 41 was in the non-locked position of deactivated, Fig. 1, some extended axially each spring 51, exceeds the end of supporting member 49 separately, 41 biasings of locking plate is being pasted the end wall 53 of the gear-box 11 that faces mutually.
Mainly referring to accompanying drawing 2, actuating mechanism 37 comprises two parts again, and a ball tilt actuators is represented with 55 and an electromagnetic actuators generally, represents with 57 generally.Ball tilt actuators 55 comprises actuation plate 59 in the annular, is arranged in the annular chamber 61 that forms on the gear-box 11.Close on actuation plate 59, but in the chamber 61 outer installment, be an outer actuation plate 63, it is subjected to the axial constraint of holding member 65 with respect to gear-box 11.Lock knownly as those of ordinary skills, actuation plate 59 and 63 has formed the inclined-plane, will describe in detail subsequently, be provided with a plurality of cam members during this time, that represents here forms cam member by the cam ball, yet should be appreciated that, can use other various forms of cam member.In some occasions, " inclination " action can only finish by the inclined surface that matches, during any cam member is not set.
Electromagnetic actuators 57 preferably is made up of an electromagnetic coil, and this coil represents with 71 that generally its effect is to apply the braking torque that needs on the actuation plate 63 outside, to start the ball tilt actuators.Electromagnetic coil 71 is annular preferably, and A is concentric with spin axis, and with respect to its (not shown) fixed installation of the differential around it, so that gear-box 11 is with respect to coil 71 rotations.Coil 71 comprises the coil base 73 of an annular, and it surrounds coil 71 three sides, and coil 71 is accepted electrical input signal by wire terminal 75, is shown among Fig. 2.Electromagnetic coil is preferably made according to the teaching of U. S. Patent 5911643, and this patent has transferred assignee of the present invention, and is only for reference here.
Face mutually with coil 71, what be arranged on coil 71 left sides among Fig. 2 is a toroidal membrane 77, be arranged between coil 71 and the dividing plate 77 is the suitable friction material of one deck annular, represent with 79 generally, it for example is the RESEARCH OF PYROCARBON of making according to the teaching of U. S. Patent 4700823 (having transferred assignee of the present invention, only for reference here).Dividing plate 77 is made up of magnetic material, so that coil 71 is when being energized, the flux path that surrounds coil 71 passes dividing plate 77, and pulling dividing plate 77, makes itself and friction material 79 frictional fit.As selection, replace dividing plate 77 to cooperate with one deck friction material 79, dividing plate 77 also can cooperate with the end face that faces mutually of annular wire ring support 73, that is, or exterior edge face radially, or interior edge face radially, or the two.Dividing plate 77 its inner radial surface with outside the outer surface of actuation plate 63 cooperate.So when coil cancellation excitation, dividing plate 77 is with actuation plate 63 rotations, so with gear-box and with respect to coil 71 rotations.
Description 4, in conjunction with the accompanying drawings 2, the operation of rotation limting mechanism, ball tilt actuators and remaining part of the present invention will be described.According to an important aspect of the present invention, the end wall 53 of gear-box forms three less circular holes 81, forms three small sircle holes 83 with its interior actuation plate that faces mutually 59.What be provided with in each hole 81 is as reciprocating actuator pin 85, and the right-hand member of each pin 85 in Fig. 2 and Fig. 4 has the diameter parts 87 that reduces, and this part is pressed in the hole of facing mutually 83.So during the actuating or inclination of ball actuator, interior actuation plate 59 is from non-actuated position shown in Figure 2 (separating with end wall 53), and is mobile towards the actuated position (near end wall 53) of Fig. 4 signal.
Yet as what mention in disclosed background, one of purpose of the present invention provides than the higher gear-box of device intensity in the statement patent, and this gear-box is provided with the cam ball in the hole of end wall.In Fig. 4, can see, big on the end wall 53 for part that three cam balls 67 the cut away part more required than three actuator pins 85 is installed.This be because, pin 85 cooperates with locking plate 41, only extension is a part of on the axial thickness of plate 41 to make groove 43.All the other thickness of locking plate after groove 43, the axial force that actuator pin 85 applies when being enough to bear the inclination of ball tilt actuators.
When move on the left side of interior actuation plate 59 in Fig. 2 and Fig. 4, as mentioned above, this actuator pin 85 that moves through left is passed to locking plate 41, so locking plate 41 is moved to locked position (what represent among Fig. 4 is to separate with end wall 53) from non-locked position (what represent Fig. 2 is near end wall 53).The more important thing is, when locking plate 41 when its locked position moves, tooth 39 engagements on each groove 43 beginning and the side gear, the lasting rotation of gear-box 11 and locking plate 41 (supposing in Fig. 4 " downwards ") makes moment of torsion directly be transferred to side gear 25, with the direction identical with gear-box and speed driving side gear 23 and 25.
The main reference accompanying drawing 4 again, can see, each groove 43 is limited by surface 89 and 91 at circumferencial direction, and each surface all is provided with to such an extent that be an accurate angle with spin axis A.In main embodiment, only as an example, surface 89 and 91 forms the angles of about 5 degree with respect to spin axis A, during the direction driving side gear of representing in according to Fig. 4, so that surface 89 cooperates Face to face with the flank profil of facing mutually.
According to a further aspect in the invention, each actuation plate 59 and 63 preferably includes compound inclined surface.So each plate 59 and half surface of 63 comprise that initial steeper inclined surface 93 and end are than gentle dip surface 95.In main embodiment, only as an example, than the scope of steep dip ramp surface (representing with angle X in Fig. 4) at about 12 to 14 degree, and milder inclined surface 95 (representing with angle Y in Fig. 4) is in the scope of about 3 to 5 degree.
According to a further aspect in the invention, the profile of surface 89 and 91 angle and tooth 39 is selected correspondingly with angle " X " than gentle dip surface 95, so that the ball tilt actuators applies enough axial forces when coil 71 is energized, with tooth 39 engagements of keep Locked plate 41 and side gear.In other words, if increase angle " X " from selected angle, just reduced the axial force that produces, under the effect of spring 51 bias forces, this power is opposite with the power of ball tilt actuators 55, and locking plate 41 may break away from from tooth 39.So when the locking condition of differential mechanism no longer needed, coil 71 was cancelled excitation, the ball tilt actuators will move to centre shown in Figure 2, centering position from tilt boundary position shown in Figure 4.So the axial force that ball tilt actuators 55 applies has been removed, the profile angle of surface 89 and tooth 39 impels tooth 39 to break away from from groove 43, and locking plate 41 moves axially towards the non-locked position shown in Fig. 2 from locked position shown in Figure 4.So, when electrical input signal 75 during in response to the cancellation of coil 71 incentive conditions, locking differential mechanism automatic unlocking of the present invention (that is from being latched to non-locking states motion).
Existing main reference accompanying drawing 5 and 6 will be described selection embodiment of the present invention, and wherein same or analogous parts represent that with identical reference character new element will be represented with the reference character that surpasses " 100 ".Around the electromagnetic coil 71 spacer element 101 is set, combines with the gear-box diameter place of closing on hub portion 33.As what be clear that in Fig. 5, gear-box 11 is formed with a plurality of spring eyes 103, in each hole 103 pressure spring 51 is set, its effect make ball tilt-activated its 55 turn back to shown in Fig. 5 and 6 between the position.This embodiment's differential mechanism does not have locking plate 41, so spring 51 directly cooperates with interior actuation plate 59.Interior actuation plate 59 is formed with 105 (left sides among Fig. 5), one " interior " surface, and its effect will described subsequently.
Existing main reference accompanying drawing 6, side gear 25 comprise, towards the flange-like locking part 107 of its outer surface, are formed with a plurality of locking grooves 109 on its side in the face of the end wall 53 of gear-box 11.Select among the embodiment at this, but only limit to for example 6 grooves 109 are arranged, each can have a kind of structure shape.When the right side of Fig. 6 is seen, just for example, the shape that groove 109 has is circle or long-round-shape certainly, and each is all big slightly than the actuator pin 85 that faces mutually.In this embodiment's differential mechanism, replace cooperating with locking plate 41, each pin 85 passes through locking part 107 and directly cooperates with side gear 25, and especially, sells 85 and moves in each groove 109 by its inner (left end among Fig. 6).
When operation, except that above-mentioned difference, second embodiment is identical with first embodiment basically.When proper functioning, coil 71 is energized, and ball tilt actuators 55 is biased to its central position, and the retracted position shown in pin 85 is positioned at is so that this device is worked as the open type differential mechanism.When wishing locking differential mechanism, coil 71 is energized, and ball tilt actuators 55 is activated, as previously mentioned, in making actuation plate 59 towards end wall 53 towards Fig. 5 and the left side in 6 move.The motion of this plate 59 overcomes the bias force of spring 51, and pin 85 is moved into left in separately the groove 109, so locking part 107 and side gear 25 are locked at stationary state, does not rotate with respect to gear-box 11.
When the operation under the locking pattern no longer needed, for example when vehicle was drawn again well, coil 71 was energized once more, thereby rotated with identical speed again with 63 with outer actuation plate 59 in making.Spring 51 makes plate 59 get back to the position shown in its Fig. 5, makes pin get back to the position shown in its Fig. 6, and it shrinks from groove 109, allows this device as the work of open type differential mechanism once more.
Obtained detailed description in the present invention's specification in front, and believed, after reading and understanding this specification, various changes and improvements of the present invention all are conspicuous to those of ordinary skill in the art.That is such changes and improvements all are included in the present invention, so they all drop in the scope of appended claim.
Claims (16)
1, a kind of differential gear mechanism comprises a gear-box (11) that forms a running shaft (A) and a gear cavity (13); The differential gear mechanism that is arranged in the described gear cavity (13) comprises an input gear (17) and first (25) and second (23) output gear at least; Operationally limit described first output gear (25) and with the counterrotating mechanism of the described gear-box (11) of its common rotation; The actuating mechanism of described rotation limting mechanism, the described actuating mechanism that comprises first (59) and second (63) actuation plate is made up of a cam and tilting actuator (55), wherein, described first (59) with the relative rotation of second (63) actuation plate from its non-actuated condition (Fig. 2) to actuating state (Fig. 4), described rotation limting mechanism is moved to its engagement (Fig. 4); Described second actuation plate (63) is set to described gear-box (11) in described non-actuated position (Fig. 2) and rotates; Near described second actuation plate (63) electromagnetic actuators (57) is set, this electromagnetic actuators responds an electrical input signal (75) and can operate, and described second actuation plate (63) is rotated with respect to described gear-box (11); It is characterized in that:
(a) described first (59) and second (63) actuation plate is set at the outside of gear-box end wall (53), described first actuation plate (59) can move axially towards end wall (53), and having a plurality of actuation elements (85) that accompany, described actuation element (85) passes the respective aperture (81) on the described end wall (53) extending axially;
(b) described rotation limting mechanism (35) is made up of a locking plate (41) that is provided with near first output gear (25), and is fixed non-rotatablely and can axially relatively move with respect to described gear-box (11);
(c) move towards described end wall (53) when described first actuation plate (59), with described actuation element (85) make described locking plate (41) with respect to described first output gear (25) when described locked position moves, described first output gear (25) and described locking plate (41) cooperate, thereby make mechanism (39,43) be locked in a non-rotatable position to first output gear (25) and described locking plate (41) mutually.
2, differential gear mechanism as claimed in claim 1, it is characterized in that, when described first (59) and second (63) actuation plate is in described deactivated condition (Fig. 2), mechanism (49,51) makes described locking plate (41) setover towards described gear-box end wall (53) from described locked position.
3, differential gear mechanism as claimed in claim 2, it is characterized in that, described locking plate (41) comprises a plurality of lugs (45) that operationally cooperate with described gear-box (11), so stating gear-box (11) with respect to lock, can not rotate described locking plate (41), the setover described mechanism of described locking plate comprises a plurality of microscler supporting members (49) fixing with respect to described gear-box, the direction of this supporting member generally is parallel to described spin axis (A), with a plurality of pressure springs (51), one of each pressure spring is sat up straight on a supporting member (49), the lug (45) of described locking plate (41) and the other end is reclining.
4, differential gear mechanism as claimed in claim 1, it is characterized in that, described locking plate (41) generally ringwise around described spin axis (A), described a plurality of actuation elements (85) are arranged to around described spin axis (A) circular array, and with described locking plate (41) axial alignment.
5, differential gear mechanism as claimed in claim 4, it is characterized in that, the composition of the described mechanism of described first output gear of locking (25) and described locking plate (41) is, described first output gear (25) that comprises a circle tooth (39), with the described locking plate that is formed with annular mating groove (43), this annular mating groove (43) is used for holding described tooth (39) when described locking plate is in described locked position (Fig. 4).
6, differential gear mechanism as claimed in claim 4, it is characterized in that, each described groove (43) comprises matching surface (89,91), be used for meshing described mating surface (89 with the flank that faces mutually of described tooth (39), 91) form an angle with respect to described spin axis (A), described angle is chosen such that promptly at described electromagnetic actuators (57) when not being energized that described locking plate (41) breaks away from described tooth (39).
7, differential gear mechanism as claimed in claim 6, it is characterized in that, described first (59) and second (63) actuation plate forms compound inclined surface, each inclined surface comprise initial steep bevel (93) and end than gentle slope (95), described angle than gentle slope is to select like this, promptly with respect to described mating surface (89,91) angle of Xing Chenging, when going up the appearance engagement in milder inclined-plane (95), can apply enough axial forces, described locking plate (41) is remained on described locked position (Fig. 4) with respect to described first output gear (25).
8, differential gear mechanism as claimed in claim 1 is characterized in that, described actuating mechanism also comprises a plurality of cam members (67), and this cam member operationally cooperates with described first (59) and second (63) actuation plate.
9, differential gear mechanism as claimed in claim 1, it is characterized in that, described electromagnetic actuators (57) by one fixing, generally be that the electromagnetic coil (71) of annular is formed, the setting of this electromagnetic coil makes it form the relation of encirclement to described second actuation plate (63), described actuator comprises an element (77), and this element is fixed to such an extent that rotate with described second actuation plate (63).
10, a kind of mechanism comprises a casing (11) that forms a running shaft (A) and a gear cavity (13); The driving mechanism that is arranged in the described gear cavity (13) comprises one first gear (25); Operationally limit described first gear (25) and with the counterrotating mechanism of the described casing (11) of its common rotation; The actuating mechanism of described rotation limting mechanism, comprise first (59) and the actuating mechanism of second (63) actuation plate form by a cam and tilting actuator (55), wherein, described first (59) with the relative rotation of second (63) actuation plate from its non-actuated condition (Fig. 2) to actuating state (Fig. 4), described rotation limting mechanism is moved to engagement (Fig. 4); Described second actuation plate (63) is set to described casing (11) in described non-actuated condition (Fig. 2) and rotates; Near described second actuation plate (63) electromagnetic actuators (57) is set, this electromagnetic actuators responds an electrical input signal (75) and can operate, and described second actuation plate (63) is rotated with respect to described casing (11); It is characterized in that:
(a) described first gear (25) comprises a circle tooth (39), and each described tooth comprises at least one side;
(b) described rotation limting mechanism (35) is made up of a locking plate (41) that is provided with near first gear (25), and be fixed non-rotatablely and can axially relatively move with respect to described casing (11), with be formed with a plurality of mating surfaces (89,91), each mating surface is set to the side of close described tooth (39) and meshes; With
(c) each described mating surface (89,91) forms an angle with respect to spin axis (A), and the selection of described angle is that under the situation that described electromagnetic actuators is not energized, described locking plate (41) breaks away from described tooth (39).
11, as the mechanism of claim 10, it is characterized in that, described first (59) and second (63) actuation plate forms compound inclined surface, each inclined surface comprise initial steep bevel (93) and end than gentle slope (95), described angle than gentle slope is to select like this, promptly with respect to described mating surface (89,91) the described angle of Xing Chenging, when going up the appearance engagement in milder inclined-plane (95), can apply enough axial forces, described locking plate (41) is remained on described locked position (Fig. 4) with respect to described first gear (25).
12, a kind of differential gear mechanism comprises a gear-box (11) that forms a running shaft (A) and a gear cavity (13); The differential gear mechanism that is arranged in the described gear cavity (13) comprises an input gear (17) and first (25) and second (23) output gear at least; Operationally limit described first output gear (25) and counterrotating mechanism with the described gear-box (11) of its common rotation; The actuating mechanism of described rotation limting mechanism, the described actuating mechanism that comprises first (59) and second (63) actuation plate is made up of a cam and tilting actuator (55), wherein, described first (59) with the relative rotation of second (63) actuation plate from its non-actuated condition (Fig. 2) to actuating state (Fig. 4), described rotation limting mechanism is moved to engagement (Fig. 4); Described second actuation plate (63) is set to described gear-box (11) in described non-actuated condition (Fig. 2) and rotates; Near described second actuation plate (63) electromagnetic actuators (57) is set, this electromagnetic actuators responds an electrical input signal (75) and can operate, and described second actuation plate (63) is rotated with respect to described gear-box (11); It is characterized in that:
(a) described first (59) and second (63) actuation plate is set at the outside of gear-box end wall (53), described first actuation plate (59) can move axially towards end wall (53), and having a plurality of actuation elements (85) that accompany, described actuation element (85) passes the respective aperture (81) on the described end wall (53) extending axially;
(b) described rotation limting mechanism (35) is made up of locking part (107), and is fixed to such an extent that rotate with first output gear (25);
(c) described locking part (107) and described a plurality of actuation element (85) cooperate, when described actuation plate (59) is shifted to described end wall (53), make described actuation element (85) with respect to first output gear (25) when locked position moves, first output gear (25) is locked in respect to the non-rotary locked position of described gear-box (11).
13, as the differential gear mechanism of claim 12, it is characterized in that, when described first (59) and second (63) actuation plate was in described non-actuated condition (Fig. 5), mechanism (51) made described first actuation plate (59) biasing, leaves described gear-box end wall (53) from described locked position.
14, as the differential gear mechanism of claim 12, it is characterized in that, described locking part (107) generally is to circularize around spin axis (A), and described a plurality of actuation elements (85) circularize setting around described spin axis (A), and with described locking part (107) axial alignment.
As the differential gear mechanism of claim 12, it is characterized in that 15, described actuating mechanism also comprises a plurality of cam members (67), it operationally cooperates with described first (59) and second (63) actuation plate.
16, as the differential gear mechanism of claim 12, it is characterized in that, described electromagnetic actuators (57) by one fixing, generally be that the electromagnetic coil (71) of annular is formed, the setting of this electromagnetic coil makes it become to surround relation to described second actuation plate (63), described actuator comprises an element (77), and this element is fixed to such an extent that rotate with described second actuation plate (63).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/877830 | 2001-06-08 | ||
| US09/877,830 US6551209B2 (en) | 2000-01-18 | 2001-06-08 | Electronically actuated locking differential |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1395051A true CN1395051A (en) | 2003-02-05 |
| CN1311174C CN1311174C (en) | 2007-04-18 |
Family
ID=25370815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021262632A Expired - Lifetime CN1311174C (en) | 2001-06-08 | 2002-06-07 | Electric exciting locking differential mechanism |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4235877B2 (en) |
| KR (1) | KR100945099B1 (en) |
| CN (1) | CN1311174C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261746A (en) * | 2010-11-03 | 2013-08-21 | 伊顿公司 | Electronically triggered locking differential |
| CN107061534A (en) * | 2016-01-13 | 2017-08-18 | 株式会社捷太格特 | Dog-clutch and differential gear |
| CN111255820A (en) * | 2018-11-30 | 2020-06-09 | 沃恩汽车有限公司 | Compact electromagnetic pulse disconnecting assembly and application method thereof |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4072111B2 (en) * | 2003-10-24 | 2008-04-09 | 三井金属鉱業株式会社 | Power equipment |
| JP3955013B2 (en) * | 2003-11-28 | 2007-08-08 | 三井金属鉱業株式会社 | Power unit clutch mechanism |
| JP3955014B2 (en) * | 2003-11-28 | 2007-08-08 | 三井金属鉱業株式会社 | Power unit clutch mechanism |
| US7264569B2 (en) * | 2005-01-14 | 2007-09-04 | Eaton Corporation | Electronically actuated locking differential |
| US7602271B2 (en) * | 2006-08-21 | 2009-10-13 | American Axle & Manufacturing, Inc. | Electronically actuated apparatus using solenoid actuator with integrated sensor |
| CN102939480B (en) * | 2010-06-04 | 2015-07-22 | 丰田自动车株式会社 | Fastening structure for ring-gear and differential case, and differential device using same |
| CN103591249B (en) * | 2012-08-15 | 2017-06-13 | 伊顿公司 | Locking differential with locking bonding length and low haul distance high |
| JP6059474B2 (en) * | 2012-09-14 | 2017-01-11 | Ｇｋｎドライブラインジャパン株式会社 | Differential lock control device |
| EP2885560B1 (en) * | 2013-10-23 | 2016-11-16 | Eaton Corporation | Torque limiting differential |
| JP6696179B2 (en) * | 2016-01-13 | 2020-05-20 | 株式会社ジェイテクト | Differential |
| EP4022199A1 (en) * | 2019-08-30 | 2022-07-06 | Eaton Intelligent Power Limited | Electronically actuated ramp style locking differential having lock detection |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909112A1 (en) * | 1988-05-05 | 1990-09-27 | Uni Cardan Ag | GEARBOX |
| US5007886A (en) * | 1989-12-26 | 1991-04-16 | Eaton Corporation | Limited slip differential |
| US5019021A (en) * | 1990-07-02 | 1991-05-28 | Eaton Corporation | Modulating limited slip differential |
| JP3568968B2 (en) * | 1992-11-16 | 2004-09-22 | 栃木富士産業株式会社 | Differential device |
| JPH0732252U (en) * | 1993-11-25 | 1995-06-16 | 栃木富士産業株式会社 | Differential limiting ball cam device |
| US6083134A (en) * | 1999-02-18 | 2000-07-04 | Eaton Corporation | Electronically actuated locking differential |
| US6551209B2 (en) * | 2000-01-18 | 2003-04-22 | Eaton Corporation | Electronically actuated locking differential |
-
2002
- 2002-06-07 CN CNB021262632A patent/CN1311174C/en not_active Expired - Lifetime
- 2002-06-08 KR KR1020020032142A patent/KR100945099B1/en active IP Right Grant
- 2002-06-10 JP JP2002168419A patent/JP4235877B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261746A (en) * | 2010-11-03 | 2013-08-21 | 伊顿公司 | Electronically triggered locking differential |
| CN103261746B (en) * | 2010-11-03 | 2016-03-09 | 伊顿公司 | The locking differential of electric triggering |
| CN107061534A (en) * | 2016-01-13 | 2017-08-18 | 株式会社捷太格特 | Dog-clutch and differential gear |
| CN107061534B (en) * | 2016-01-13 | 2020-06-26 | 株式会社捷太格特 | Dog clutch and differential gear |
| CN111255820A (en) * | 2018-11-30 | 2020-06-09 | 沃恩汽车有限公司 | Compact electromagnetic pulse disconnecting assembly and application method thereof |
| CN111255820B (en) * | 2018-11-30 | 2022-07-15 | 沃恩汽车有限公司 | Compact electromagnetic pulse disconnecting assembly and application method thereof |
| US11506247B2 (en) | 2018-11-30 | 2022-11-22 | Warn Automotive, Llc | Compact electromagnetic pulse disconnect system |
| US11624409B2 (en) | 2018-11-30 | 2023-04-11 | Warn Automotive, Llc | Compact electromagnetic pulse disconnect system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4235877B2 (en) | 2009-03-11 |
| KR20020093639A (en) | 2002-12-16 |
| KR100945099B1 (en) | 2010-03-02 |
| CN1311174C (en) | 2007-04-18 |
| JP2003130183A (en) | 2003-05-08 |
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Effective date of registration: 20190620 Address after: Dublin, Ireland Patentee after: Eaton Intelligent Power Co.,Ltd. Address before: Ohio, USA Patentee before: Eaton Corp. |
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