CN105408666A - Power transmission apparatus - Google Patents
Power transmission apparatus Download PDFInfo
- Publication number
- CN105408666A CN105408666A CN201480041807.8A CN201480041807A CN105408666A CN 105408666 A CN105408666 A CN 105408666A CN 201480041807 A CN201480041807 A CN 201480041807A CN 105408666 A CN105408666 A CN 105408666A
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- China
- Prior art keywords
- cooling medium
- driver pinion
- blowing unit
- power transmitting
- differential
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Classifications
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
This power transmission apparatus (20) installed on-board a vehicle includes a coolant supply line (60) constituted such that a hydraulic oil is supplied as a cooling medium towards a drive pinion gear (44) to the outlet side of the meshing section when the vehicle drives forward past the meshing section of the drive pinion gear (44) and a diff ring gear (45). The coolant supply line (60) has a coolant spray part (61) having two coolant spray ports (61o) for spraying the hydraulic oil towards the drive pinion gear (44), one of the two coolant spray ports (61o) being situated in proximity to one end face(44a) of the drive pinion gear (44), and the other being situated in proximity to the other end face (44b) of the drive pinion gear (44).
Description
Technical field
The present invention relates to a kind of power transmitting deice, this power transmitting deice has: speed changer; Driver pinion, the power from speed changer is delivered to this driver pinion; Differential annulus (differential ring gear), it engages with driver pinion; Differential gear train, it is connected with differential annulus.
Background technique
In the prior art, as this power transmitting deice, the known following a kind of power transmitting deice of people, that is, this power transmitting deice has: differential driver pinion, and it is made up of minor diameter helical gear; Differential annulus, it is made up of major diameter helical gear; Oil pipe, its end face along differential annulus configures, and is connected with oil pump, and this power transmitting deice utilizes the nozzle be formed on oil pipe to spray to differential driver pinion and provides lubricant oil (for example, referring to patent documentation 1).In this power transmitting deice, the facewidth of differential driver pinion is greater than the facewidth of differential annulus, and, oily to the increment jet lubrication of engaging with differential annulus of differential driver pinion by the nozzle of above-mentioned oil pipe.In addition, the flank of tooth that the lubricant oil being supplied to this increment is meshed along differential driver pinion with differential annulus is in order provided to the whole flank of tooth.Thus, the temperature that thermal capacity especially can be suppressed to be less than the differential driver pinion be made up of minor diameter helical gear of the differential annulus be made up of major diameter helical gear rises, and the temperature because of differential driver pinion can be suppressed to rise the spot corrosion (pitching) caused.
In addition, as this power transmitting deice, people are known following a kind of power transmitting deice also, namely, in this power transmitting deice, the working fluid that the inner bottom part receiving the housing of dress driver pinion and differential annulus etc. stockpiles is stirred under the rotary action of differential annulus, and, this by the working fluid that stirs by the engaging piece (for example, referring to patent documentation 2) of the partition wall guiding driver pinion that extends upward from housing inner bottom part and differential annulus.
No. 2009-156368, [patent documentation 1] Japanese invention Patent Publication No
No. 2010-090979, [patent documentation 2] Japanese invention Patent Publication No
But, the rotating speed of the differential driver pinion engaged with differential annulus is higher, the temperature of this differential driver pinion more can rise, even if power transmitting deice as described in Patent Document 1 provides lubricant oil like that to differential driver pinion with the increment that differential annulus starts to engage, also likely differential driver pinion cannot be cooled fully.In addition, in the power transmitting deice described in patent documentation 2, what the delivery volume of the working fluid that the engaging piece to driver pinion and differential annulus provides depended on the working fluid that the rotating speed of differential annulus and housing inner bottom part stockpile stockpiles situation.Therefore, the working fluid stockpiled according to rotating speed and the housing inner bottom part of differential annulus stockpile situation, the delivery volume of the working fluid that the engaging piece to driver pinion and differential annulus may be caused to provide is not enough, thus cannot cool driver pinion well.
Summary of the invention
In view of this, the object of the invention is to, cool the driver pinion engaged with differential annulus better, improve the durability of driver pinion further.
In order to reach above-mentioned purpose, power transmitting deice of the present invention have employed following technological scheme.
Power transmitting deice of the present invention is arranged on vehicle, and it has: speed changer; Driver pinion, the transmission of power from this speed changer gives this driver pinion; Differential annulus, it engages with this driver pinion; Differential gear train, it is connected with this differential annulus, this power transmitting deice has cooling medium supplying pipe, described cooling medium supplying pipe by the position of the outlet side of described engaging piece during described vehicle forward, provides cooling medium to described driver pinion at the engaging piece than described driver pinion and described differential annulus.
This power transmitting deice has cooling medium supplying pipe, the position of the outlet side (engage and terminate side) of the engaging piece of this cooling medium supplying pipe when leaning on vehicle forward than driver pinion and the engaging piece of differential annulus, provides cooling medium to driver pinion.Thus can be slided and the flank of tooth of the gear teeth after the engaging of the driver pinion that temperature rises provides cooling medium, to cool this driver pinion better to the flank of tooth because of the engaging piece with differential annulus by cooling medium supplying pipe.Thereby, it is possible to the generation of the situation such as spot corrosion of the driver pinion suppressing the reduction of the surface hardness of the gear teeth caused because of temper softening effect to cause better.Therefore, utilize this power transmitting deice can cool the driver pinion engaged with differential annulus better, improve the durability of driver pinion further.In addition, " outlet side of engaging piece during vehicle forward " refer to the gear teeth of the driver pinion engaged with differential annulus along sense of rotation during vehicle forward to rotate till 180 ° the region of process.
In addition, described cooling medium supplying pipe can have cooling medium blowing unit, described cooling medium blowing unit has the cooling medium ejiction opening to described driver pinion ejection cooling medium, under the state that described power transmitting deice is arranged on described vehicle, described driver pinion is configured in the top of described differential annulus, under the state that described power transmitting deice is arranged on described vehicle, the described cooling medium blowing unit of described cooling medium supplying pipe extends configuration in the below of described driver pinion, described cooling medium supplying pipe provides cooling medium to described driver pinion from below upward by described cooling medium blowing unit.Thus, generally the cooling medium blowing unit of cooling medium supplying pipe can be configured in excess room that below and being configured in that diameter is less than the driver pinion of differential annulus is formed between driver pinion and differential annulus, therefore, it is possible to effectively utilize this excess room, to suppress the maximization of the power transmitting deice caused because arranging cooling medium supplying pipe well.And, with spray compared with the situation of cooling medium from upper direction driver pinion, there is provided cooling medium to driver pinion upward from below by cooling medium blowing unit, the situation making because gear stirs the situation of cooling medium generation foam and foam be trapped in around driver pinion can be suppressed extremely well to occur.
Moreover, described driver pinion and described differential annulus can be helical gear, described cooling medium supplying pipe can have cooling medium blowing unit, described cooling medium blowing unit can have 2 cooling medium ejiction openings respectively to described driver pinion ejection cooling medium, one in described 2 cooling medium ejiction openings can be formed in described cooling medium blowing unit, and than the end face of center near the side of this driver pinion on the facewidth direction of described driver pinion, another in described 2 cooling medium ejiction openings can be formed in described cooling medium blowing unit, and than the end face of the center on the facewidth direction of described driver pinion near the opposite side of this driver pinion.That is, when driver pinion and differential annulus are helical gear, the engaging piece of the gear teeth of driver pinion and the gear teeth of differential annulus moves from the end face of the side of driver pinion to the end face of opposite side with both rotations.And, start the region of the end face of this either side engaged with the gear of differential annulus at the gear teeth of driver pinion, the surface pressure at engaging piece place increases, the region of the end face of the opposite side terminated in both engagements, easy generation oil film breakage, produces spot corrosion.Therefore, by in 2 of cooling medium blowing unit cooling medium ejiction openings is configured on the position of the end face of the side of driver pinion, and another cooling medium ejiction opening is configured on the position of the end face of the opposite side of driver pinion, thus the driver pinion engaged with differential annulus can be cooled extremely well, further improve the durability of this driver pinion.
In addition, the described cooling medium blowing unit of described cooling medium supplying pipe can be more farther from the axle center of this driver pinion than the tooth top of described driver pinion, and more farther from the axle center of this differential annulus than the tooth top of described differential annulus.Thus, configuring in opposite directions at the engaging piece than driver pinion and differential annulus by the position of above-mentioned outlet side with this driver pinion in the inner side being positioned at two end faces axially of driver pinion at least partially of cooling medium blowing unit can be made.Thereby, it is possible to provide cooling medium fully to driver pinion, further to cool driver pinion well by the cooling medium ejiction opening of cooling medium blowing unit.
Moreover described cooling medium ejiction opening can be formed in described cooling medium blowing unit, in order to spray described cooling medium to the axle center of described driver pinion.
In addition, the described cooling medium blowing unit of described cooling medium supplying pipe can extend configuration along the axis of described driver pinion.Thus, when being formed with the cooling medium ejiction opening of multiple cooling medium blowing unit along the axis of driver pinion, equably cooling medium can be provided to driver pinion with the whole flank of tooth of the gear teeth after the gear teeth meshing of differential annulus by the plurality of cooling medium ejiction opening.Driver pinion can be cooled extremely well thus.In addition, " axis along driver pinion extends " also comprises " extending with the several angle formed relative to the axis of driver pinion ".
Accompanying drawing explanation
Fig. 1 is the general configuration figure of the power transmitting deice involved by an embodiment of the invention.
Fig. 2 is the action schedule representing each gear of the automatic transmission that the power transmitting deice shown in Fig. 1 has and the relation between clutch and brakeage state.
Fig. 3 is the plan view of the major component of the power transmitting deice representing Fig. 1.
Fig. 4 is the stereogram of the major component of the power transmitting deice representing Fig. 1.
Fig. 5 is the plan view of the major component of the power transmitting deice representing Fig. 1.
Embodiment
Next, with reference to accompanying drawing, the specific embodiment of the present invention is described.
Fig. 1 is the general configuration figure of the power transmitting deice 20 involved by an embodiment of the invention.Power transmitting deice 20 shown in Fig. 1 is connected with the bent axle of the not shown engine be arranged on front-wheel drive vehicle, and the transmission of power from engine can be given the driving wheel (front-wheel) of not shown left and right.As shown in Figure 1, power transmitting deice 20 has: case of transmission 22, its Driving axle housing 222 having converter shell 221 and be connected with this converter shell 221; Fluid transmission means (take-off device) 23, it is housed in converter shell 221; Oil pump 24; Automatic transmission 30, it is housed in Driving axle housing 222; Gear mechanism (train of gearings) 40; Differential gear train (differential attachment) 50 etc.
Fluid transmission means 23 is torque-converters, and it has: the pump impeller 23p of input side, and it is connected with the bent axle of engine; The turbine 23t of outlet side, it is connected with the input shaft 31 of automatic transmission 30; Guide wheel (stator) 23s, it is configured in the inner side of pump impeller 23p and turbine 23t, for carrying out rectification to working oil from turbine 23t to the flowing of pump impeller 23p; Overrunning clutch 23o, the sense of rotation of its restriction stator 23s, makes this stator 23s rotate towards a direction; Lock-up clutch 23c etc.In fact, fluid transmission means 23 can for not having the hydraulic couplers of guide wheel 23s yet.
Oil pump 24 is gear pump, and it has pump assembly, external gear and internal gear etc., and wherein, pump assembly comprises the pump housing and pump cover; External gear is connected with the pump impeller 23p of fluid transmission means 23 by wheel hub (hub); Internal gear engages with this external gear.Oil pump 24 is by the motivational drive from engine, attract the working oil (ATF) be accumulated on not shown food tray, by its force feed to not shown hydraulic control device, this hydraulic control device generates fluid transmission means 23 and the hydraulic pressure needed for automatic transmission 31.
Automatic transmission 30 is 4 grades of speed changing type speed changers, as shown in Figure 2, there is Ravigneaux (Ravigneaux) formula planetary gears 32, for changing by input side to multiple clutch C1 of the power transfer path of outlet side, C2, C3,2 breaks B1, B3 and overrunning clutch F2.
Ravigneaux formula planetary gears 32 has the 1st sun gear 33a, the 2nd sun gear 33b, ring gear (gear ring) 34, multiple short and small gear 35a, multiple long small gear 35b, planetary carrier 36, wherein, the 1st sun gear 33a and the 2nd sun gear 33b is external gear; Ring gear 34 is internal gear, and it is configured on the circle concentric with the 1st and the 2nd sun gear 33a, 33b; Multiple short and small gear 35a engages with the 1st sun gear 33a; Multiple long small gear 35b engages with the 2nd sun gear 33b and multiple short and small gear 35a, and engages with ring gear 34; Planetary carrier 36 keeps can rotation (can rotate) and the multiple short and small gear 35a that can revolve round the sun and multiple long small gear 35b.The ring gear 34 of Ravigneaux formula planetary gears 32 has the function of the output block of automatic transmission 30, and the power being passed to ring gear 34 by input shaft 31 passes to the driving wheel of left and right by gear mechanism 40, differential gear train 50.In addition, planetary carrier 36 is bearing on case of transmission 22 by overrunning clutch F2, and overrunning clutch F2 limits the sense of rotation of this planetary carrier 36, and this planetary carrier 36 is rotated to a direction.
Clutch C1 has hydraulic servomechanism, this hydraulic servomechanism by piston, multiple friction plate and by friction plate, provide the grease chamber etc. of working oil to form, this clutch C1 is hydraulic coupling, it and can draw the 1st sun gear 33a of Wella formula planetary gears 32 to couple together by input shaft 31, and can remove both connections.Clutch C2 has hydraulic servomechanism, this hydraulic servomechanism by piston, multiple friction plate and by friction plate, provide the grease chamber etc. of working oil to form, this clutch C2 is hydraulic coupling, it and can draw the planetary carrier 36 of Wella formula planetary gears 32 to couple together by input shaft 31, and can remove both connections.Clutch C3 has hydraulic servomechanism, this hydraulic servomechanism by piston, multiple friction plate and by friction plate, provide the grease chamber etc. of working oil to form, this clutch C3 is hydraulic coupling, it and can draw the 2nd sun gear 33b of Wella formula planetary gears 32 to couple together by input shaft 31, and can remove both connections.
Break B1 is hydraulic brake, it is the band brake or the multi-disc friction type break that comprise hydraulic servomechanism, it can be fixed on drawing the 2nd sun gear 33b of Wella formula planetary gears 32 on case of transmission 22, and can remove the 2nd sun gear 33b and be fixed on state on case of transmission 22.Break B3 is hydraulic brake, it is the band brake or the multi-disc friction type break that comprise hydraulic servomechanism, it can be fixed on drawing the planetary carrier 36 of Wella formula planetary gears 32 on case of transmission 22, and can remove planetary carrier 36 and be fixed on state on case of transmission 22.
By not shown hydraulic control device, these clutches C1 ~ C3 and break B1, B3 are supplied and discharge working oil and makes its action.Fig. 2 be represent each gear of automatic transmission 30 and clutch C1 ~ C3, break B1, B3 and overrunning clutch F2 operating state between the action schedule of relation.By making clutch C1 ~ C3 and break B1, B3 be in the state shown in the action schedule of Fig. 2, automatic transmission 30 can provide advance 1 ~ 4 grade and retreat 1 grade.In addition, at least one in clutch C1 ~ C3 and break B1, B3 can be the such engagement type snap-in structure key element of dog clutch (dogclutch).
Gear mechanism 40 has: middle driving gear (Counterdrivegear) 41, and it is connected with the ring gear 34 of Wella formula planetary gears 32 that draws of automatic transmission 30; Middle driven gear 43, it is fixed on and extends in parallel on the jack shaft 42 of setting with the input shaft 31 of automatic transmission 30, and engages with middle driving gear 41; Driver pinion (final driving gear) 44, on it is formed at (or being fixed on) jack shaft 42; Differential annulus (final driven gear) 45, it engages with this driver pinion 44.The diameter of driver pinion 44 is less than the diameter of differential annulus 45, and, this driver pinion 44 is arranged on the state on vehicle at power transmitting deice 20 under, be configured in the top of this differential annulus 45 in case of transmission 22.In addition, as shown in the figure, differential annulus 45 is connected with differential gear train 50.Further, in the present embodiment, driver pinion 44 and differential annulus 45 are helical gear.
Next, be described with reference to the cooling structure of Fig. 3 ~ Fig. 5 to driver pinion 44.These accompanying drawings represent the structure around the driver pinion 44 of power transmitting deice 20 and differential annulus 45.In addition, as shown in Fig. 3 ~ Fig. 5, in figure, downside represents on the downside of vertical direction.
As shown in Fig. 3 ~ Fig. 5, power transmitting deice 20 has cooling medium supplying pipe 60, and the working oil as cooling medium is supplied to driver pinion 44 by this cooling medium supplying pipe 60.Cooling medium supplying pipe 60 has: cooling medium blowing unit 61, and it has multiple (in present embodiment being 2) sprays cooling medium ejiction opening 61o from working oil to driver pinion 44; Cooling medium inflow part 62, it extends out from cooling medium blowing unit 61, and is connected with the oilhole 221a be formed on converter shell 221; Cooling medium outflow portion 63, it extends out from cooling medium blowing unit 61, walks around differential gear train 50 (thick dashed line with reference in Fig. 3), and is connected with the oilhole 221b be formed on converter shell 221.The oilhole 221a be connected with cooling medium inflow part 62 is connected with the oil circuit (all not shown) of the lubrication system of hydraulic control device by being formed at the oil circuit in converter shell 221.In addition, the oilhole 221b be connected with cooling medium outflow portion 63 with to be formed in converter shell 221 and the oil circuit (all not shown) of opening is connected near the bearing supporting differential gear train 50.
Cooling medium supplying pipe 60 is configured in case of transmission 22, its cooling medium blowing unit 61 is more farther from the axle center 44o of this driver pinion 44 than the tooth top (fine dotted line with reference in Fig. 3) of driver pinion 44, and more farther from the axle center 45o of this differential annulus 45 than the tooth top (double dot dash line with reference in Fig. 3) of differential annulus 45.Thus can make as shown in fig. 4 and fig. 5 cooling medium blowing unit 61 at least partially in the inner side being positioned at two end faces 44a, 44b axially of driver pinion 44, configure in opposite directions with this driver pinion 44.
And, in the present embodiment, be arranged on the state on vehicle at power transmitting deice 20 under, the cooling medium blowing unit 61 of cooling medium supplying pipe 60 is positioned at the below that diameter is less than the driver pinion 44 of differential annulus 45, extends being formed at the axis roughly along this driver pinion 44 in the excess room between driver pinion 44 and differential annulus 45.Like this, by the cooling medium blowing unit 61 of cooling medium supplying pipe 60 being configured in the excess room that is formed between driver pinion 44 and differential annulus 45, this excess room can be effectively utilized, to suppress the maximization of the power transmitting deice 20 caused because arranging cooling medium supplying pipe 60 well.
Here, in the power transmitting deice 20 of present embodiment, when being provided with the vehicle forward of power transmitting deice 20, driver pinion 44 rotates to the forward direction (being expressed as clockwise direction in figure) shown in the dotted arrow in Fig. 3 and Fig. 4.Therefore, as described above cooling medium supplying pipe 60 is configured in case of transmission 22, the downstream side of cooling medium blowing unit 61 in the above-mentioned forward direction of driver pinion 44 with the engaging piece of differential annulus 45 can be made, the outlet side (advance side in the sense of rotation of driver pinion 44) of the engaging piece namely during vehicle forward, configures in opposite directions with driver pinion 44.
In addition, " downstream side ", i.e. " outlet side of engaging piece during vehicle forward (engagement terminates side) " represent be located across driver pinion 44 axle center, driver pinion 44 and the engaging piece of differential annulus 45 and the axle center of differential annulus 45 straight line downside and be positioned at the region of the downside of driver pinion 44.But, driver pinion 44 forward direction for side shown in the dotted arrow in Fig. 3 and Fig. 4 in the opposite direction time, " downstream side ", i.e. " outlet side of engaging piece during vehicle forward (engagement terminates side) " represent the upside and the region being positioned at the upside of driver pinion 44 that are positioned at above-mentioned straight line.That is, " downstream side " refer to the gear teeth of the driver pinion 44 engaged with differential annulus 45 along the forward direction of this driver pinion 44 to rotate till 180 ° the region of process.In addition, when the forward direction of driver pinion 44 is for direction shown in the dotted arrow in Fig. 3 and Fig. 4, preferred cooling medium blowing unit 61 is configured in the downside of the straight line of above-mentioned linear vertical and is configured in the downside of driver pinion 44.
In addition, in the present embodiment, as shown in Figure 4 and Figure 5, cooling medium blowing unit 61 has: lower side pipe portion 611, and it is connected with cooling medium inflow part 62, and roughly extends along the axis of driver pinion 44; Upper side pipe portion 612, it is connected with cooling medium outflow portion 63, and is positioned at the close beneath of driver pinion 44, and the several angle formed with the axis in the vertical direction relative to this driver pinion 44 extends; Curved part 613, it extends between lower side pipe portion 611 and upper side pipe portion 612.That is, in the present embodiment, the part in the upper side pipe portion 612 of cooling medium blowing unit 61 is configured in the inner side being positioned at two end faces 44a, 44b axially of driver pinion 44, and configures in opposite directions with this driver pinion 44.
Further, multiple cooling medium ejiction opening 61o are formed at the top of cooling medium blowing unit 61, and opening upward, in order to axle center (by below upward) the ejection working oil to driver pinion 44.Namely, as shown in Fig. 3 ~ Fig. 5, multiple cooling medium ejiction opening 61o roughly along driver pinion 44 axially with the gap-forming of regulation in the outer circumferential face of the upside in the upper side pipe portion 612 of cooling medium blowing unit 61, and be positioned at the inner side being positioned at two end faces 44a, 44b axially of this driver pinion 44.Thus can downstream side in the driver pinion 44 above-mentioned forward direction with the engaging piece of differential annulus 45, by the flank of tooth ejection working oil of multiple cooling medium ejiction opening 61o to the gear teeth of this driver pinion 44.In addition, in the present embodiment, curved part 613 is formed at being positioned at the end 45a of converter shell 221 opposite side slightly on the outstanding position of the axis of differential annulus 45 than this differential annulus 45.But curved part 613 also can be formed at and lean on the position of converter shell 221 side than the above-mentioned end face of differential annulus 45.
Be provided with the power transmitting deice 20 with said structure vehicle engine running and drive oil pump 24 time, the working oil being accumulated in not shown working oil accumulating part to not shown hydraulic control device, is provided the working oil with certain hydraulic pressure through being formed at oil circuit in converter shell 221 and oilhole 221a to the cooling medium inflow part 62 of cooling medium supplying pipe 60 by the oil circuit of the lubrication system of this hydraulic control device by oil pump 24 force feed.Then, the working oil being supplied to cooling medium inflow part 62 flow in cooling medium blowing unit 61, and, the wherein downstream side of a part of working oil in the above-mentioned forward direction of driver pinion 44 with the engaging piece of differential annulus 45, is sprayed to this driver pinion 44 (solid arrow with reference to shown in Fig. 3 ~ Fig. 5) by the multiple cooling medium ejiction opening 61o being formed at the outer circumferential face in the upper side pipe portion 612 of cooling medium blowing unit 61.
Thus can be slided and the flank of tooth of the gear teeth after the engaging of the driver pinion 44 that temperature rises is provided as the working oil of cooling medium, to cool this driver pinion 44 better to the flank of tooth because of the engaging piece with differential annulus 45 by cooling medium supplying pipe 60.Thus, the temperature that diameter can be suppressed well to be less than the driver pinion of the easy affected by heat of differential annulus 45 rises, and the generation of the situations such as the spot corrosion of the driver pinion 44 suppressing the reduction of the surface hardness of the gear teeth caused because of temper softening effect to cause better.In addition, in the present embodiment, as mentioned above, multiple cooling medium ejiction opening 61o roughly along the inner side that be positioned at two end face 44a, 44bs axially of the axial arrangement of driver pinion 44 at this driver pinion 44, and is configured in the below of driver pinion 44.Thus can by multiple cooling medium ejiction opening 61o by working oil evenly and be supplied to the whole flank of tooth of driver pinion 44 fully, to cool driver pinion 44 extremely well.Therefore, this power transmitting deice 20 is utilized can to improve the durability of driver pinion 44 further.
In addition, in the present embodiment, one in 2 cooling medium ejiction opening 61o of cooling medium blowing unit 61 is formed in cooling medium blowing unit 61, and than the end face 44a of the center on the facewidth direction of driver pinion 44 near the side (vehicle rear side) of this driver pinion 44, and another in 2 cooling medium ejiction opening 61o is formed in cooling medium blowing unit 61, and than the end face 44b of the center on the facewidth direction of driver pinion 44 near the opposite side (front part of vehicle side) of this driver pinion 44.Namely, when driver pinion 44 and differential annulus 45 are helical gear as shown in Figure 4 (when the Hand of spiral of driver pinion 44 is left-handed), the engaging piece of the gear teeth of driver pinion 44 and the gear teeth of differential annulus 45 moves from the end face 44b side of the laterally closer front part of vehicle of end face 44a mono-of the close vehicle rear of driver pinion 44 with both rotations.And, the region of the close end face 44a engaged is started at the gear teeth and the gear teeth of differential annulus 45 of driver pinion 44, the surface pressure at engaging piece place increases, and the region of close the end face 44b terminated in both engagements easily oil film breakage occurs, generation spot corrosion.Therefore, by in 2 of cooling medium blowing unit 61 cooling medium ejiction opening 61o being configured on the position of the end face 44a of the side near driver pinion, and another cooling medium ejiction opening 61o is configured on the position of the end face 44b of the opposite side near driver pinion, thus the driver pinion 44 engaged with differential annulus 45 can be cooled extremely well, further improve the durability of this driver pinion 44.
In addition, the working oil flowing through cooling medium blowing unit 61 flow in the oilhole 221b of converter shell 221 by cooling medium outflow portion 63, is provided to the not shown bearing of supporting differential gear train 50 through not shown oil circuit.Thus also can the bearing of supporting differential gear train 50 be lubricated and be cooled.The working oil being provided to the not shown bearing of driver pinion 44 and supporting differential gear train 50 flow into not shown working oil accumulating part, by oil pump 24 again force feed to hydraulic control device.
As mentioned above, this power transmitting deice 20 has cooling medium supplying pipe 60, this cooling medium supplying pipe 60, leaning on the position in the downstream side in the forward direction of this driver pinion 44 than driver pinion 44 and the engaging piece of differential annulus 45, is provided as the working oil of cooling medium to this driver pinion 44.Thus can be slided and the flank of tooth of the gear teeth after the engaging of the driver pinion 44 that temperature rises is provided as the working oil of cooling medium, to cool this driver pinion 44 better to the flank of tooth because of the engaging piece with differential annulus 45 by cooling medium supplying pipe 60.Thereby, it is possible to the generation of the situation such as spot corrosion of the driver pinion 44 suppressing the reduction of the surface hardness of the gear teeth caused because of temper softening effect to cause better.Therefore, utilize this power transmitting deice 20 can cool the driver pinion 44 engaged with differential annulus 45 better, improve the durability of driver pinion 44 further.
In addition, cooling medium supplying pipe 60 has cooling medium blowing unit 61, this cooling medium blowing unit 61 has the cooling medium ejiction opening 61o spraying working oil to driver pinion 44, cooling medium blowing unit 61 is more farther from the axle center of this driver pinion 44 than the tooth top of driver pinion 44, and more farther from the axle center of this differential annulus 45 than the tooth top of differential annulus 45.Thus, configuring in opposite directions at the engaging piece than driver pinion 44 and differential annulus 45 by the position in the downstream side in above-mentioned forward direction with this driver pinion 44 in the inner side being positioned at two end faces axially of driver pinion 44 at least partially of cooling medium blowing unit 61 can be made.Thereby, it is possible to provide cooling medium by the cooling medium ejiction opening 61o of cooling medium blowing unit 61 fully to driver pinion 44, further to cool driver pinion 44 well.But, the cooling medium blowing unit 61 of cooling medium supplying pipe 60 can with than driver pinion 44 tooth top from this driver pinion 44 axle center more close to mode configure, also can with than differential annulus 45 tooth top from this differential annulus 45 axle center more close to mode configure.
Moreover, driver pinion 44 is arranged on the state on vehicle at power transmitting deice 20 under, be configured in the top of differential annulus 45, under the cooling medium blowing unit 61 of cooling medium supplying pipe 60 is arranged on vehicle state at power transmitting deice 20, extend configuration in the below of driver pinion 44.In addition, cooling medium ejiction opening 61o is formed at the top of cooling medium blowing unit 61, and opening upward, cooling medium is provided to driver pinion 44 from below upward by this cooling medium ejiction opening 61o.Thus, generally the cooling medium blowing unit 61 of cooling medium supplying pipe 60 can be configured in excess room that below and being configured in that diameter is less than the driver pinion 44 of differential annulus 45 is formed between driver pinion 44 and differential annulus 45, therefore, it is possible to effectively utilize this excess room, to suppress the maximization of the power transmitting deice 20 caused because arranging cooling medium supplying pipe 60 well.And, with spray compared with work oil condition from upper direction driver pinion 44, there is provided cooling medium to driver pinion 44 upward from below by cooling medium blowing unit 61, the situation making because gear stirs the situation of cooling medium generation foam and foam be trapped in around driver pinion 44 can be suppressed extremely well to occur.But driver pinion 44 also can not be configured in the top of differential annulus 45.In addition, driver pinion 44 forward direction for shown in the dotted arrow in Fig. 3 and Fig. 4 side in the opposite direction time, the cooling medium blowing unit 61 of cooling medium supplying pipe 60 can extend configuration above driver pinion 44.
In addition, cooling medium supplying pipe 60 cooling medium blowing unit 61 along driver pinion 44 axis extend configuration.Thus, when being formed with the cooling medium ejiction opening 61o of multiple cooling medium blowing unit 61 along the axis of driver pinion 44, equably working oil can be provided to driver pinion 44 with the whole flank of tooth of the gear teeth after the gear teeth meshing of differential annulus 45 by the plurality of cooling medium ejiction opening 61o.Driver pinion 44 can be cooled extremely well thus.But multiple cooling medium ejiction opening 61o at least forms one on the outer circumferential face in upper side pipe portion 612.In addition, cooling medium blowing unit 61 also can not extend configuration along the axis of driver pinion 44.
Here, the corresponding relation of the main structure key element of the technological scheme described in the main structure key element of above-mentioned mode of execution etc. and summary of the invention is described.That is, in above-mentioned mode of execution etc., power transmitting deice 20 has: automatic transmission 30; Driver pinion 44, the power from automatic transmission 30 is delivered to driver pinion 44; Differential annulus 45, it engages with driver pinion 44; Differential gear train 50, it is connected with differential annulus 45, and this power transmitting deice 20 is equivalent to " power transmitting deice ".Cooling medium supplying pipe 60 is configured in the position leaning on the downstream side in the forward direction of driver pinion 44 than driver pinion 44 and the engaging piece of differential annulus 45, for providing working oil to driver pinion 44, this cooling medium supplying pipe 60 is equivalent to " cooling medium supplying pipe ".Cooling medium blowing unit 61 has the cooling medium ejiction opening 61o spraying working oil to driver pinion 44, and it is equivalent to " cooling medium blowing unit ".
Above embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned mode of execution, can various change be carried out without departing from the spirit and scope of the invention.In addition, for implementing the example that the mode of foregoing invention is only the technological scheme described in summary of the invention, the structural element of the technological scheme described in summary of the invention is not limited.
[industrial applicibility]
The present invention may be used for the manufacturing etc. of power transmitting deice.
Claims (6)
1. a power transmitting deice, it is arranged on vehicle, has: speed changer; Driver pinion, the transmission of power from this speed changer gives this driver pinion; Differential annulus, it engages with this driver pinion; Differential gear train, it is connected with this differential annulus, it is characterized in that,
Have cooling medium supplying pipe, described cooling medium supplying pipe by the position of the outlet side of described engaging piece during described vehicle forward, provides cooling medium to described driver pinion at the engaging piece than described driver pinion and described differential annulus.
2. power transmitting deice according to claim 1, is characterized in that,
Described cooling medium supplying pipe has cooling medium blowing unit, and described cooling medium blowing unit has the cooling medium ejiction opening to described driver pinion ejection cooling medium,
Described driver pinion, under described power transmitting deice is arranged on the state on described vehicle, is configured in the top of described differential annulus,
Under the state that described power transmitting deice is arranged on described vehicle, the described cooling medium blowing unit of described cooling medium supplying pipe extends configuration in the below of described driver pinion, and described cooling medium supplying pipe provides cooling medium to described driver pinion from below upward by described cooling medium blowing unit.
3. power transmitting deice according to claim 1 and 2, is characterized in that,
Described driver pinion and described differential annulus are helical gear,
Described cooling medium supplying pipe has cooling medium blowing unit, and described cooling medium blowing unit has 2 cooling medium ejiction openings respectively to described driver pinion ejection cooling medium,
One in described 2 cooling medium ejiction openings is formed in described cooling medium blowing unit, and than the end face of center near the side of this driver pinion on the facewidth direction of described driver pinion, another in described 2 cooling medium ejiction openings is formed in described cooling medium blowing unit, and than the end face of the center on the facewidth direction of described driver pinion near the opposite side of this driver pinion.
4. power transmitting deice according to claim 3, is characterized in that,
Described cooling medium supplying pipe is configured to, and described cooling medium blowing unit is more farther from the axle center of this driver pinion than the tooth top of described driver pinion, and more farther from the axle center of this differential annulus than the tooth top of described differential annulus.
5., according to the power transmitting deice in claim 2 ~ 4 described in any one, it is characterized in that,
Described cooling medium ejiction opening is formed in described cooling medium blowing unit, in order to spray described cooling medium to the axle center of described driver pinion.
6., according to the power transmitting deice in claim 2 ~ 5 described in any one, it is characterized in that,
Described cooling medium supplying pipe is configured to, and described cooling medium blowing unit extends configuration along the axis of described driver pinion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013179390 | 2013-08-30 | ||
| JP2013-179390 | 2013-08-30 | ||
| PCT/JP2014/072356 WO2015030024A1 (en) | 2013-08-30 | 2014-08-27 | Power transmission apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105408666A true CN105408666A (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480041807.8A Pending CN105408666A (en) | 2013-08-30 | 2014-08-27 | Power transmission apparatus |
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| Country | Link |
|---|---|
| JP (1) | JPWO2015030024A1 (en) |
| CN (1) | CN105408666A (en) |
| WO (1) | WO2015030024A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325925A (en) * | 2004-05-14 | 2005-11-24 | Toyota Motor Corp | Lubricating device of gear mechanism |
| JP2010090979A (en) * | 2008-10-07 | 2010-04-22 | Aisin Aw Co Ltd | Power transmission device for vehicle |
| CN101790652A (en) * | 2007-12-27 | 2010-07-28 | 爱信艾达株式会社 | Gear rotation transmitting device |
| CN102317656A (en) * | 2009-04-08 | 2012-01-11 | 丰田自动车株式会社 | Structure for cooling the heat-generating parts of vehicle drive device |
| CN103080611A (en) * | 2010-09-02 | 2013-05-01 | 沃依特专利有限责任公司 | Gear train |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337449A (en) * | 1998-05-27 | 1999-12-10 | Hitachi Ltd | Gear apparatus |
| JP5011052B2 (en) * | 2007-10-03 | 2012-08-29 | 株式会社日立ニコトランスミッション | Gear device |
-
2014
- 2014-08-27 WO PCT/JP2014/072356 patent/WO2015030024A1/en active Application Filing
- 2014-08-27 CN CN201480041807.8A patent/CN105408666A/en active Pending
- 2014-08-27 JP JP2015534248A patent/JPWO2015030024A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325925A (en) * | 2004-05-14 | 2005-11-24 | Toyota Motor Corp | Lubricating device of gear mechanism |
| CN101790652A (en) * | 2007-12-27 | 2010-07-28 | 爱信艾达株式会社 | Gear rotation transmitting device |
| JP2010090979A (en) * | 2008-10-07 | 2010-04-22 | Aisin Aw Co Ltd | Power transmission device for vehicle |
| CN102317656A (en) * | 2009-04-08 | 2012-01-11 | 丰田自动车株式会社 | Structure for cooling the heat-generating parts of vehicle drive device |
| CN103080611A (en) * | 2010-09-02 | 2013-05-01 | 沃依特专利有限责任公司 | Gear train |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2015030024A1 (en) | 2017-03-02 |
| WO2015030024A1 (en) | 2015-03-05 |
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Application publication date: 20160316 |