CN105909768B - Differential gear - Google Patents
Differential gear Download PDFInfo
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- CN105909768B CN105909768B CN201610094882.1A CN201610094882A CN105909768B CN 105909768 B CN105909768 B CN 105909768B CN 201610094882 A CN201610094882 A CN 201610094882A CN 105909768 B CN105909768 B CN 105909768B
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- mentioned
- differential
- outer cover
- gear
- wall
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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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
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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
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
- F16H57/0453—Section walls to divide a gear sump
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The differential gear for the oil intrusion breather chamber that can inhibit to be stirred by basin type gear and the case of differential is provided.In differential gear (3), midfeather (24) is formed in the inside of differential cover (7), above-mentioned midfeather (24) has the notch (24A) of the arc-shaped for the peripheral part for surrounding differential carrier (11), and extend from the bottom of differential cover (7) towards top along the end face of basin type gear (12), to which the inside of outer cover (8) to be divided into the 1st space (25) of setting basin type gear (12) and 2nd space (26) adjacent with the 1st space (25).In addition, breather chamber (18) is formed in the 2nd space (26), differential cover (7) is formed in than the bellying (27) that backing (22) bloats outward in the lower section of breather chamber (18).
Description
Technical field
The present invention relates to differential gear, more particularly to by the differential of the breather chamber of the inside and outside connection of outer cover
Device.
Background technology
The vehicles such as automobile differential gear mounted is configured to, and the case of differential with basin type gear is arranged in outer cover,
The oil being accumulated in outer cover is stirred using the rotation of basin type gear and is lubricated.
In addition, breather chamber is set to differential gear, above-mentioned breather chamber passes through internal temperature caused by variation with oil temperature etc.
Change the expansion or shrinkage of associated gas and gas is made to circulate so that pressurized state or negative pressure shape will not be become inside outer cover
State.
As the existing differential gear for having breather chamber, such as the device recorded in known patent document 1.The differential fills
It sets and has：The case of differential, peripheral part are equipped with basin type gear；Outer cover stores the case of differential；And breather chamber, it is poor to be set to
The top of fast device case.
Breather chamber has：Bottom wall is formed with the notch for being connected to the inside of outer cover with breather chamber；And roof,
With the venthole for being connected to the outside of outer cover with breather chamber.
Existing technical literature
Patent document
Patent document 1：No. 4707250 bulletin of patent
Invention content
Problems to be solved by the invention
In this existing differential gear, basin type gear and breather chamber are set to the identical space of the inside of outer cover, because
This is easy to flow to the lower section of breather chamber by the oil that the rotation of basin type gear stirs.Oily notch easy to reach as a result, oil warp
Notch intrusion breather chamber is crossed, which is possible to leak out from venthole to outside.
The present invention is conceived to above-mentioned this problem and completes, and its purpose is to provide can inhibit by basin type gear and difference
The differential gear for the oil intrusion breather chamber that fast device case stirs.
The solution to the problem
The differential gear of the present invention has：Outer cover comprising the 1st outer cover component and the 2nd outer cover engaged by joint surface
Component stores oil in bottom；Planetary gear shaft is driven, there is driving planetary gear, the 1st outer cover component is supported in and rotates certainly
Such as, receive the driving force transmitted from power source；The case of differential has box of tricks, the box of tricks peripheral part have with
The basin type gear for driving planetary gear engagement, is set to the inside of outer cover and rotates freely, and will be transmitted from driving planetary gear shaft
Driving force be output to the 1st output shaft and the 2nd output shaft linked with left and right sidesing driving wheel；Breather chamber is located at the case of differential
Top is formed in the top of the 2nd outer cover component, has：Roof, positioned at the lower part of roof bottom wall, connection roof and bottom wall and
It is set as mutual opposite a pair of sidewalls, leans on inboard and connection roof, bottom wall and one positioned at than the joint surface of the 2nd outer cover component
To the backing of side wall, the end face of roof, bottom wall and a pair of sidewalls is closed by the 1st outer cover component；Intercommunicating pore is formed in bottom
Wall is connected to inner space and the breather chamber of outer cover；And air vent, it is formed in roof, is connected to the outside of breather chamber and outer cover,
In above-mentioned differential gear, it is formed with midfeather in the inside of the 2nd outer cover component, above-mentioned midfeather, which has, surrounds the case of differential
The notch of the arc-shaped of peripheral part, and extend from the bottom of the 2nd outer cover component toward top along the end face of basin type gear, to
The inside of outer cover is divided into the 1st space of setting basin type gear and 2nd space adjacent with the 1st space, breather chamber are formed in
2nd space is formed with the bellying bloated outward than backing in the 2nd outer cover component below breather chamber.
Invention effect
In this way according to the present invention, midfeather is formed in the inside of the 2nd outer cover component, and above-mentioned midfeather, which has, surrounds differential mechanism
The notch of the arc-shaped of the peripheral part of case, and extend from the bottom of the 2nd outer cover component toward top along the end face of basin type gear,
To which the inside of outer cover to be divided into the 1st space for being provided with basin type gear and 2nd space adjacent with the 1st space.
It is arranged at oily the 2nd space that flow into setting breather chamber that the basin type gear in the 1st space stirs as a result, but should
Oil is stopped by midfeather without excessively flowing into the 2nd space.
Thus, the oil intrusion breather chamber stirred by basin type gear can be inhibited, oil can be prevented from breather chamber to the outside of outer cover
It leaks out.
In addition, according to the present invention, breather chamber is formed in the 2nd space, is bloated outward than backing in the lower section of breather chamber
Bellying is formed in the 2nd outer cover component.
As a result, can by bellying increase the 2nd space volume and by by the rotation of basin type gear and the case of differential by
The oil of circulation is directed to bellying.Therefore, the amount of the oil stirred by the rotation by basin type gear and the case of differential can be reduced, energy
More effectively oil is inhibited to reach breather chamber, can more effectively inhibit oil intrusion breather chamber.
Description of the drawings
Fig. 1 is the figure for an embodiment for indicating the differential gear of the present invention, is the vertical view of vehicle rear.
Fig. 2 is the figure for an embodiment for indicating the differential gear of the present invention, is the side view of vehicle rear.
Fig. 3 is the figure for an embodiment for indicating the differential gear of the present invention, is the vertical view of differential gear.
Fig. 4 is the figure for an embodiment for indicating the differential gear of the present invention, is for differential gear from differential carrier
The figure of the inside of the differential cover of viewing.
Fig. 5 is the figure for an embodiment for indicating the differential gear of the present invention, is the directions V-V of Fig. 4 to regarding section
Figure.
Fig. 6 is the figure for an embodiment for indicating the differential gear of the present invention, is the directions VI-VI of Fig. 4 to regarding section
Figure.
Fig. 7 is the figure for an embodiment for indicating the differential gear of the present invention, is the front view of differential cover.
Reference sign
3：Differential gear, 5L：Drive shaft (the 1st output shaft), 5R：Drive shaft (the 2nd output shaft), 6：Differential carrier is (outside the 1st
Cover component), 7：Differential cover (the 2nd outer cover component), 6A：Joint surface (joint surface of the 1st outer cover component), 7A：Joint surface the (the 2nd
The joint surface of outer cover component), 7B：Bottom (bottom of the 2nd outer cover component), 7C：Top (top of the 2nd outer cover component), 7D：Week
Wall (peripheral wall of the 2nd outer cover component), 8：Outer cover, 10：Drive planetary gear shaft, 10A：Drive planetary gear, 11：The case of differential,
12：Basin type gear, 13：Planetary gear shaft (box of tricks), 14A, 14B：Planetary gear (box of tricks), 15A, 15B：Half axle gear
Take turns (box of tricks), 16L, 16R：Driving wheel, 18：Breather chamber, 19：Roof, 19A：Air vent, 20：Bottom wall, 20A：Intercommunicating pore,
20a：Open end (open end of the top of intercommunicating pore), 20b：Open end (open end of the lower section of intercommunicating pore), 21A, 21B：Side
Wall, 22：Backing, 24：Midfeather, 24A：Notch, 25：1st space, 26：2nd space, 27：Bellying, 27A：Inclined wall,
27a：Upper end (upper end of bellying), 27b：Lower end (lower end of bellying), 28：Limiting wall, 29：Lug boss,
29A：Opening, 30：Spark plug, L1：Opening direction central shaft, the L2 of intercommunicating pore：Rotary shaft be (the 1st output shaft and the 2nd output shaft
Rotary shaft), L3：Imaginary plane (imaginary plane with the opening direction orthogonality of center shaft of intercommunicating pore, the vacation extended along inclined wall
Think plane), P1：Intersection point (intersection point that the opening direction central shaft of intercommunicating pore intersects with imaginary plane)
Specific implementation mode
Hereinafter, the embodiment of the differential gear using the description of the drawings present invention.
Fig. 1~Fig. 7 is the figure of the differential gear for the internal combustion engine for indicating an embodiment of the invention.
First, illustrate to constitute.
In Fig. 1, Fig. 2, the vehicles such as four-wheel automobile 1 are the vehicles of front engine rear wheel driving (FR) formula.Vehicle 1 has
Car body 2, differential gear 3 are set to the rear portion of car body 2.Differential gear 3 is set between transmission shaft 4 and drive shaft 5L, 5R of left and right.
In Fig. 2, Fig. 3, differential gear 3 includes by joint surface 6A, 7A differential carrier 6 engaged and differential cover 7, tool
There is the outer cover 8 in bottom storage oil O (with reference to Fig. 5).Here, the differential carrier 6 of present embodiment constitutes the 1st outer cover of the present invention
Component, differential cover 7 constitute the 2nd outer cover component of the present invention.
In Figure 5, driving planetary gear shaft 10 is supported in differential carrier 6 by bearing 9 and rotates freely, and drives planet tooth
Wheel 10A is formed in the front-rear direction rear end of the vehicle 1 of driving planetary gear shaft 10.Planetary gear shaft 10 is driven to connect with transmission shaft 4
It connects, driving planetary gear shaft 10 is integrally rotated with transmission shaft 4.
The power of engine as power source (not shown) is transmitted to transmission shaft 4 by speed changer (not shown), starts
The power of machine is transmitted to driving planetary gear shaft 10 by transmission shaft 4.
The case of differential 11 is set to the inside of outer cover 8 and rotates freely.
Basin type gear 12 is installed on the peripheral part of the case of differential 11, basin type in a manner of integrally being rotated with the case of differential 11
Gear 12 is engaged with driving planetary gear 10A.
Drive the rotating shaft direct cross of the rotary shaft and basin type gear 12 of planetary gear shaft 10, basin type gear 12 and driving planet
Gear 10A respectively includes bevel gear.
In figure 6, have in the inside of the case of differential 11：Planetary gear shaft 13 is integrally rotated with the case of differential 11；
A pair of of planetary gear 14A, 14B are supported in the front and back end of planetary gear shaft 13 and rotate freely；And a pair of of axle shaft gear
15A, 15B (illustrate axle shaft gear 15) in Figure 5, are engaged respectively with planetary gear 14A, 14B.
In Fig. 4, the one end of drive shaft 5L, 5R is inserted into the vehicle-width direction along rotation axis of the case of differential 11
Two end sides, the one end of drive shaft 5L, 5R is chimeric with axle shaft gear 15A, 15B.
Drive shaft 5L, 5R is connect (referring to Fig.1) with driving wheel 16L, 16R of left and right respectively.Here, the drive of present embodiment
Moving axis 5L constitutes the 1st output shaft of the present invention, and drive shaft 5R constitutes the 2nd output shaft of the present invention.
Planetary gear shaft 13 is pacified in such a way that its axis direction is towards the direction orthogonal with the rotation axis of the case of differential 11
Loaded on the case of differential 11.In addition, a pair of planetary gear 14A, 14B are respectively formed as when the case of differential 11 is rotated with the case of differential
It revolves round the sun centered on 11 rotation axis, and the rotation centered on the axis of planetary gear shaft 13.
Moreover, a pair of axle shaft gear 15A, 15B are set as coaxially being oppositely disposed with the rotation axis of the case of differential 11 respectively
Have for carrying out spline company with the one end of drive shaft 5L, 5R in the inside of the case of differential 11, and along the rotation axis
The multiple spline tooths connect.
The differential gear 3 that constitutes in this way in vehicle 1 in the case where keeping straight on level road, when from driving planetary gear shaft 10
When driving planetary gear 10A to basin type 12 passing power of gear, the case of differential 11 rotates.
At this point, the rolling of driving wheel 16L, 16R of left and right is apart from equal, therefore a pair of axle shaft gear 15A, 15B are with identical
Rotary speed rotation, planetary gear 14A, 14B not rotation being sandwiched between axle shaft gear 15A, 15B, with the case of differential 11,
Planetary gear 14A, 14B and axle shaft gear 15A, 15B are integrally formed and revolve round the sun.
In the case where vehicle 1 is turned, the rolling distance of the side in the driving wheel 16L and 16R in outside that turn is than turning
The rolling distance of another party in the driving wheel 16L and 16R of inside, therefore in axle shaft gear 15A, the 15B in outside of turning
One side quickly rotates than another party in axle shaft gear 15A, 15B of turning medial.
At this point, the side in axle shaft gear 15A, the 15B in turning outside quickly rotates than the case of differential 11, turning medial
Axle shaft gear 15A, 15B in another party more slowly rotated than the case of differential 11.
Thus, it is not only revolved round the sun and is also carried out certainly by a pair of of axle shaft gear 15A, 15B planetary gear 14A, 14B clipped
Turn, the power from the case of differential 11 can be transmitted to axle shaft gear 15A, 15B of the left and right rotated at different rates.
The case of differential 11 has planetary gear shaft 13, planetary gear 14A, 14B and axle shaft gear 15A, 15B in this way, on
Stating planetary gear shaft 13, planetary gear 14A, 14B and axle shaft gear 15A, 15B will pass over from driving planetary gear shaft 10
Driving force distribute and export to drive shaft 5L, 5R linked with driving wheel 16L, 16R of left and right, these planetary gear shafts 13,
Planetary gear 14A, 14B and axle shaft gear 15A, 15B constitute the box of tricks of the present invention.
In Fig. 4, lug boss 8A, 8B of semicircle shape are formed in the vehicle-width direction both ends of differential cover 7, drive shaft
5L, 5R are supported in lug boss 8A, 8B and rotate freely.In addition, the vehicle-width direction both ends in differential carrier 6 are also formed
The lug boss of semicircle shape, drive shaft 5L, 5R are supported in the lug boss and rotate freely.
Thus, be made of lug boss 8A, 8B of the lug boss of differential carrier 6 and differential cover 7 be used to support drive shaft 5L,
The cylindric lug boss of the outer cover 8 of 5R.
As shown in figure 5, oil O is accommodated in the inside of outer cover 8 so that become in the position of the bottom of outer cover 8, the liquid level of oily O
The position that the lower end of the case of differential 11 is impregnated.
In Fig. 4, Fig. 5, breather chamber 18 is formed in the upper of differential cover 7 in a manner of positioned at the top of the case of differential 11
Portion.
In Fig. 4, Fig. 5, Fig. 7, breather chamber 18 is respectively provided with：Roof 19 is formed in differential cover 7；Bottom wall 20, position
In the lower part of roof 19；A pair of sidewalls 21A, 21B is linked roof 19 and bottom wall 20 in a manner of mutually opposite；In and
Wall 22 is linking roof 19, bottom wall 20 and side wall 21A, 21B by inboard than joint surface 7A.
The breather chamber 18 be by the closing of differential carrier 6 include the roof 19, bottom wall 20, side wall 21A, 21B of joint surface 7A with
And the end of backing 22, the breather chamber 18 including confined space is consequently formed.
In Figure 5, can also be that space 6B is formed in differential carrier opposite with breather chamber 18 in the vehicle width direction
6 sides, including space 6B and constitute breather chamber 18.
In Fig. 4, Fig. 5, Fig. 7, intercommunicating pore 20A is formed in bottom wall 20, and intercommunicating pore 20A is by the inner space of outer cover 8 and leads to
Gas chamber 18 is connected to.Air vent 19A is formed in roof 19, and air vent 19A will ventilation by snorkel (with reference to Fig. 2, Fig. 3, Fig. 5) 31
Room 18 is connected to the outside of outer cover 8, i.e. extraneous gas.
In addition, breather chamber 18 has partition wall 23.Partition wall 23 is between roof 19 and bottom wall 20 from backing 22 towards connecing
Conjunction face 7A is protruded, and is connected in the space of the lower section of breather chamber 18 with the space of top by a pair of of intercommunicating pore 23A.
The breather chamber 18 has following function：Internal temperature variation is caused to lead to gas expansion or receipts in the variation etc. of oil temperature
In the case that contracting becomes pressurized state or negative pressure state to the inside of outer cover 8, extraneous gas is connected to the inside of outer cover 8 from
And the pressure of the inside of outer cover 8 is remained into fixation pressure.
Specifically, in the case where the pressure of the inside of outer cover 8 is got higher, as shown in the arrow Ai of Fig. 4, Fig. 5, outer cover 8
Internal air Ai imports the space of the breather chamber 18 of the lower section of partition wall 23 from intercommunicating pore 20A.
Air Ai is after importing the space of the breather chamber 18 of top of partition wall 23 by intercommunicating pore 23A, from air vent
External discharges of the 19A by snorkel 31 to breather chamber 18.
On the other hand, the inside of outer cover 8 become negative pressure in the case of, from snorkel 31 by air vent 19A to point
After the space of the breather chamber 18 of the top in next door 23 imports air, by intercommunicating pore 23A to the breather chamber of the lower section of partition wall 23
18 space imports air.Then, which imports the inside of outer cover 8 from intercommunicating pore 20A.
In addition, the case of differential 11 of differential gear 3, basin type gear 12 are impregnated in oily O, thus carry out basin type gear 12 and drive
The planetary gear of the lubrication of the field of conjugate action of the driving planetary gear 10A of dynamic planetary gear shaft 10 and the inside of the case of differential 11
The lubrication etc. of the field of conjugate action of 14A, 14B and axle shaft gear 15A, 15B.
Therefore, breather chamber 18 also has the case where stirring oily O by the rotation of the case of differential 11, basin type gear 12
Under, the function that prevents oily O from being leaked out to extraneous gas by breather chamber 18.
In Fig. 4~Fig. 7, midfeather 24 is formed in the inside of differential cover 7.Midfeather 24, which has, surrounds the case of differential 11
Peripheral part arc-shaped notch 24A, prolong from the bottom 7B of differential cover 7 toward top 7C along the end face of basin type gear 12
It stretches, to which the inside of outer cover 8 to be divided into the 1st space 25 of setting basin type gear 12 and 2nd space adjacent with the 1st space 25
26。
Breather chamber 18 is formed in the 2nd space 26 for being not provided with basin type gear 12 as a result,.
In Figure 5, bellying 27 is formed in the case of differential 11, and bellying 27 is more outside in the vehicle width direction than backing 22
Side's bulging.Here, differential cover 7 has peripheral wall 7D, peripheral wall 7D forms backing 22 and constitutes the 2nd sky separated by midfeather 24
Between 26, bellying 27 includes the position bloated to vehicle-width direction foreign side than peripheral wall 7D.In addition, in Figure 5, using imaginary plane
Indicate the line of peripheral wall 7D, position outstanding is bellying 27 outward from the imagination wall surface.
In Figure 5, intercommunicating pore 20A is being formed by 22 side of backing than joint surface 7A, intercommunicating pore 20A is tilted so that lower section
Open end 20b relative to top open end 20a far from bellying 27.
Bellying 27 has an inclined wall 27A, and inclined wall 27A is inclined, under the end in the bulging direction of bellying 27 is
End 27b is located at the foreign side in the bulging direction of bellying 27 than upper end 27a.In addition, the position of the upper end 27a of bellying 27
It is more against the top than the lower end 11a of the case of differential 11.
The rotary shaft L2 of drive shaft 5L, 5R is located in the opening direction central axis L 1 of intercommunicating pore 20A.In addition, equipped with
The imaginary plane L3 and opening direction central axis L 1 that the opening direction central axis L 1 of intercommunicating pore 20A is orthogonal intersect with imaginary plane L3
Intersection point P1 in the case of, the inclined wall 27A of bellying 27 is tilted along imaginary plane L3.
Limiting wall 28 is set to differential cover 7 in a manner of positioned at the 2nd space 26.Limiting wall 28 is set to breather chamber 18 and bulging
Between portion 27, it is arranged in the upper and lower directions of differential cover 7 be biased to breather chamber 18 than bellying 27, covering intercommunicating pore 20A's
Lower section.
In addition, limiting wall 28 is set to the peripheral wall 7D of differential cover 7, equipped with the imaginary plane extended along inclined wall 27A
In the case of L3, limiting wall 28 extends to the position intersected with imaginary plane L3 from peripheral wall 7D.Here, being opened with intercommunicating pore 20A
The orthogonal imaginary plane L3 of mouthful direction central axis L 1 and be same plane along the inclined wall 27A imaginary plane L3 extended.
In Fig. 5, Fig. 7, lug boss 29 is formed in peripheral wall 7D, the opening 29A that lug boss 29 has oil stream general, spark plug
30 are set to lug boss 29 and detachable.
Oil imported into the inside of outer cover 8 by opening 29A, and the oil of the inside of outer cover 8 is arranged by opening 29A to outside
Go out.
Lug boss 29 extends to the lower section of intercommunicating pore 20A from peripheral wall 7D, and lug boss 29 is formed in bellying 27 and limiting wall
Between 28.
In the following, illustration.
As shown in figure 5, when the case of differential 11 is rotated to direction of rotation R counterclockwise, oily O is arranged at the 1st space 25
Basin type gear 12 stirs upward.
Differential gear 3 according to the present embodiment forms midfeather 24, the midfeather 24 tool in the inside of differential cover 7
There is the notch 24A of the arc-shaped for the peripheral part for surrounding the case of differential 11, and along the end face of basin type gear 12 from differential cover 7
Bottom extend toward top, thus by the inside of outer cover 8 be divided into setting basin type gear 12 the 1st space 25 and with the 1st space
25 the 2nd adjacent spaces 26.
As a result, as shown in figs. 4 and 6, the oily O1 stirred by the basin type gear 12 for being set to the 1st space 25 will flow into setting
There is the 2nd space 26 of breather chamber 18, but oil O1 is stopped by midfeather 24 without excessively flowing into the 2nd space 26.
Thus, the oil intrusion breather chamber 18 stirred by basin type gear 12 can be inhibited, oil can be prevented from breather chamber 18 to outer cover 8
External leak out.
In addition, differential gear 3 according to the present embodiment, breather chamber 18 are formed in the 2nd space 26, under breather chamber 18
Side is formed in differential cover 7 than the bellying 27 that backing 22 bloats outward.
The volume that the 2nd space 26 can be increased by bellying 27 as a result, can will pass through basin type gear 12 and the case of differential 11
Rotation and the oily O2 that flows is directed to bellying 27 (with reference to Fig. 5, Fig. 6).Therefore, it can reduce and pass through basin type gear 12 and differential
The rotation of device case 11 and stir oil amount, can more effectively inhibit oil reach breather chamber 18, can more effectively inhibit oily intrusion
Breather chamber 18.
In addition, differential gear 3 according to the present embodiment, forms in the joint surface 7A than differential cover 7 by 22 side of backing
Intercommunicating pore 20A, intercommunicating pore 20A are tilted so that the open end 20b of the lower section of intercommunicating pore 20A relative to top open end 20a from
Bellying 27 deviates to the joint surface 7A of differential cover 7.
As a result, as shown in figure 5, in the oil for being directed to bellying 27 by the rotation of basin type gear 12 and the case of differential 11
O3 is stirred from the case that bellying 27 is stirred upward, the opening direction of intercommunicating pore 20A is in relative to from bellying 27
Oil the inclined direction in direction.Therefore, oily O3 can be prevented by intercommunicating pore 20A intrusion breather chambers 18.
In addition, differential gear 3 according to the present embodiment, bellying 27 has inclined wall 27A, and inclined wall 27A is in drum
Go out the sloped-end in the bulging direction in portion 27 and make lower end 27b be located at than upper end 27a bellying 27 bulging direction it is outer
Side makes intercommunicating pore 20A tilt so that the rotary shaft L2 of drive shaft 5L, 5R is located at the opening direction central axis L 1 of intercommunicating pore 20A
On, equipped with the imaginary plane L3 and opening direction central axis L 1 orthogonal with the opening direction central axis L 1 of intercommunicating pore 20A and vacation
In the case of the intersection point P1 for thinking plane L3 intersections, the inclined wall 27A of bellying 27 is tilted along imaginary plane L3.
As a result, in the oily O2 for being directed to bellying 27 by the rotation of basin type gear 12 and the case of differential 11 from bellying
In the case that 27 are stirred upward, the oily O3 stirred upward can be made far from intercommunicating pore 20A.
Moreover, in the oily O2 for being directed to bellying 27 by the rotation of basin type gear 12 and the case of differential 11 from bellying
In the case that 27 are stirred upward, the oily O3 stirred upward can be made to be directed toward the rotation of intercommunicating pore 20A and drive shaft 5L, 5R
Between axis L2, it can make to be touched with limiting wall 28 by the oily O4 that basin type gear 12 and the case of differential 11 stir without 27 ground of bellying
It hits.
As a result, can more effectively inhibit oil by intercommunicating pore 20A intrusion breather chambers 18.
In addition, differential gear 3 according to the present embodiment, by limiting wall 28 set on poor in a manner of positioned at the 2nd space 26
Fast device lid 7, and the limiting wall 28 is arranged between breather chamber 18 and bellying 27, in the upper and lower directions of differential cover 7
By the lower section of the limiting wall 28 covering intercommunicating pore 20A in a manner of being biased to breather chamber 18 than bellying 27.
The oily O3 stirred by making the rotation by basin type gear 12 and the case of differential 11 as a result, is collided with limiting wall 28, from
And oily O3 can be made to be not easy to reach breather chamber 18.
In addition, in the oily O2 for being directed to bellying 27 by the rotation of basin type gear 12 and the case of differential 11 from bellying
In the case that 27 are stirred upward, the oily O3 stirred upward is also made to be collided with limiting wall 28 and be not easy to reach breather chamber
18。
In addition, limiting wall 28, is set to the peripheral wall 7D of differential cover 7, the differential by differential gear 3 according to the present embodiment
The peripheral wall 7D of device lid 7 forms backing 22 and constitutes the 2nd space 26 separated by midfeather 24, equipped with prolonging along inclined wall 27A
In the case of the imaginary plane L3 stretched, limiting wall 28 is made to extend to the position intersected with imaginary plane L3 from peripheral wall 7D.
As a result, in the case where the oily O3 for flowing into bellying 27 splashes along inclined wall 27A to the direction of imaginary plane L3,
Oily O3 can be made to be collided with limiting wall 28.Therefore, oily O3 can be not easy to invade the bottom wall 20 of the upper surface of limiting wall 28 and breather chamber 18
Between space, can more effectively inhibit oily O3 by intercommunicating pore 20A intrusion breather chamber 18.
In addition, differential gear 3 according to the present embodiment, with the opening 29A that oil stream is general in peripheral wall 7D, and forms
The lug boss 29 of spark plug 30 is installed, lug boss 29 extends to the lower section of intercommunicating pore 20A from peripheral wall 7D, and is formed in bellying
Between 27 and limiting wall 28.
It can make to flow into bellying 27 and along inclined wall by the rotation by basin type gear 12 and the case of differential 11 as a result,
The oily O3 that 27A splashes upward is collided with lug boss 29, and above-mentioned oil O3 can be inhibited to flow into lug boss 29 and limiting wall 28 in large quantities
Between.
Moreover, the oily O3 between inflow lug boss 29 and limiting wall 28 can be made to be collided with limiting wall 28 and prevent it upward
It is mobile, therefore oily O3 intrusions breather chamber 18 can be more efficiently prevented from.
In addition, differential gear 3 according to the present embodiment, the position of the upper end 27a of bellying 27 is than the case of differential 11
Lower end 11a it is against the top.
Oily O2 can be reliably directed to bellying 27, energy by the rotation of basin type gear 12 and the case of differential 11 as a result,
Reduce the amount of the oil stirred upward by basin type gear 12 and the case of differential 11.Therefore, oil intrusion ventilation can be more efficiently prevented from
Room 18.
In addition, in the differential gear 3 of present embodiment, equipped with the opening direction central axis L 1 with intercommunicating pore 20A just
In the case of the intersection point P1 that the imaginary plane L3 and opening direction central axis L 1 of friendship intersect with imaginary plane L3, make bellying 27
Inclined wall 27A is tilted along imaginary plane L3, but not limited to this.
Such as inclined wall 27A can also be made towards the opening side for connecting the rotary shaft L2 of drive shaft 5L, 5R with intersection point P1
It is tilted to central axis L 1.
Although disclosing embodiments of the present invention, it is understood that those skilled in the art can not depart from the present invention's
Apply change in the case of range.It is intended to for all this modifications and equivalent to be contained in the claim of the present invention.
Claims (7)
1. a kind of differential gear, has：
Outer cover comprising the 1st outer cover component and the 2nd outer cover component engaged by joint surface stores oil in bottom；
Drive planetary gear shaft, have driving planetary gear, be supported in above-mentioned 1st outer cover component and rotate freely, receive from
The driving force that power source transmits；
The case of differential has box of tricks, which has the basin engaged with above-mentioned driving planetary gear in peripheral part
Type gear is set to the inside of above-mentioned outer cover and rotates freely, and the driving force transmitted from above-mentioned driving planetary gear shaft is exported
To the 1st output shaft linked with left and right sidesing driving wheel and the 2nd output shaft；
Breather chamber is located at the top of the above-mentioned case of differential, is formed in the top of above-mentioned 2nd outer cover component, has：Roof, position
In the lower part of above-mentioned roof bottom wall, link above-mentioned roof and above-mentioned bottom wall and be set as mutually opposite a pair of sidewalls, be located at
Backing that is inboard and linking above-mentioned roof, above-mentioned bottom wall and above-mentioned a pair of sidewalls is leaned on than the joint surface of above-mentioned 2nd outer cover component,
It is closed by above-mentioned 1st outer cover component the end face of above-mentioned roof, above-mentioned bottom wall and above-mentioned a pair of sidewalls；
Intercommunicating pore is formed in above-mentioned bottom wall, is connected to the inner space of above-mentioned outer cover and above-mentioned breather chamber；And
Air vent is formed in above-mentioned roof, is connected to the outside of above-mentioned breather chamber and above-mentioned outer cover,
Above-mentioned differential gear is characterized in that,
It is formed with midfeather in the inside of above-mentioned 2nd outer cover component, above-mentioned midfeather has the periphery for surrounding the above-mentioned case of differential
The notch of the arc-shaped in portion, and extend from the bottom of above-mentioned 2nd outer cover component toward top along the end face of above-mentioned basin type gear,
And the inside of above-mentioned outer cover is divided into the 1st space that above-mentioned basin type gear is arranged and the adjacent with above-mentioned 1st space the 2nd sky
Between, above-mentioned breather chamber is formed in above-mentioned 2nd space,
The bellying bloated outward than above-mentioned backing is formed with below above-mentioned breather chamber in above-mentioned 2nd outer cover component,
Position of the upper-end part of driving of above-mentioned bellying in the axle center than above-mentioned ring gear on the lower, to inhibit to pass through above-mentioned basin
The rotation of type gear and the above-mentioned case of differential and the oil that stirs invades above-mentioned breather chamber.
2. differential gear according to claim 1, which is characterized in that
Above-mentioned intercommunicating pore is formed by backing side on the joint surface than above-mentioned 2nd outer cover component,
Above-mentioned intercommunicating pore be it is inclined, open end below relative to top open end from above-mentioned bellying to the above-mentioned 2nd
The joint surface lateral deviation of outer cover component from.
3. the differential gear according to claim 1 or claim 2, which is characterized in that
It is inclined, the end, that is, lower end in the bulging direction of above-mentioned bellying that above-mentioned bellying, which has inclined wall, the inclined wall,
Than upper-end part of driving in above-mentioned bellying bulging direction foreign side,
Above-mentioned intercommunicating pore is inclined, and the rotary shaft of above-mentioned 1st output shaft and the 2nd output shaft is located at the opening side of above-mentioned intercommunicating pore
To on central shaft,
Equipped with imaginary plane and in the case of intersection point, above-mentioned inclined wall is tilted along above-mentioned imaginary plane or above-mentioned inclination
Wall direction inclines the above-mentioned opening direction central shaft that the rotary shaft of above-mentioned 1st output shaft and the 2nd output shaft is connect with above-mentioned intersection point
Tiltedly, above-mentioned imaginary plane is the imaginary plane with the opening direction orthogonality of center shaft of above-mentioned intercommunicating pore, and above-mentioned intersection point is above-mentioned opens
The intersection point that mouth direction central shaft intersects with above-mentioned imaginary plane.
4. differential gear according to claim 1, which is characterized in that
In above-mentioned 2nd outer cover component, limiting wall is set, above-mentioned limiting wall is located at above-mentioned 2nd space,
Above-mentioned limiting wall is set between above-mentioned breather chamber and above-mentioned bellying, is compared in the upper and lower directions of above-mentioned 2nd outer cover component
Above-mentioned bellying is biased to above-mentioned breather chamber, covers the lower section of above-mentioned intercommunicating pore.
5. differential gear according to claim 3, which is characterized in that
In above-mentioned 2nd outer cover component, limiting wall is formed in peripheral wall, which forms above-mentioned backing, and constitutes by above-mentioned centre
Above-mentioned 2nd space that wall separates,
Equipped with the imaginary plane extended along above-mentioned inclined wall, above-mentioned limiting wall from above-mentioned peripheral wall extend to it is upper
State the position of imaginary plane intersection.
6. differential gear according to claim 5, which is characterized in that
With the general opening of oil stream in above-mentioned peripheral wall, it is formed with the lug boss of installation spark plug, above-mentioned lug boss is from above-mentioned
Peripheral wall extends to the lower section of above-mentioned intercommunicating pore, and above-mentioned lug boss is formed between above-mentioned bellying and above-mentioned limiting wall.
7. the differential gear according to any one of claim 1 to claim 6, which is characterized in that
The position of the upper end of above-mentioned bellying is more against the top than the lower end of the above-mentioned case of differential.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015034193A JP6409615B2 (en) | 2015-02-24 | 2015-02-24 | Differential equipment |
| JP2015-034193 | 2015-02-24 |
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| CN105909768A CN105909768A (en) | 2016-08-31 |
| CN105909768B true CN105909768B (en) | 2018-08-24 |
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| CN201610094882.1A Active CN105909768B (en) | 2015-02-24 | 2016-02-19 | Differential gear |
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| JP6958467B2 (en) | 2018-04-11 | 2021-11-02 | トヨタ自動車株式会社 | Final reducer for vehicles |
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| JPS63164656U (en) * | 1987-02-20 | 1988-10-26 | ||
| JP4459854B2 (en) * | 2005-04-15 | 2010-04-28 | ジヤトコ株式会社 | Automatic transmission |
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| JP2000065191A (en) * | 1998-08-24 | 2000-03-03 | Showa Corp | Air breather structure for final reduction gear |
| JP2002181169A (en) * | 2000-12-18 | 2002-06-26 | Honda Motor Co Ltd | Breather structure of differential gear device |
| JP2002295644A (en) * | 2001-03-28 | 2002-10-09 | Honda Motor Co Ltd | Differential structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6409615B2 (en) | 2018-10-24 |
| JP2016156434A (en) | 2016-09-01 |
| CN105909768A (en) | 2016-08-31 |
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