CN101126443A - Power transmission device - Google Patents
Power transmission device Download PDFInfo
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- CN101126443A CN101126443A CNA2007101409684A CN200710140968A CN101126443A CN 101126443 A CN101126443 A CN 101126443A CN A2007101409684 A CNA2007101409684 A CN A2007101409684A CN 200710140968 A CN200710140968 A CN 200710140968A CN 101126443 A CN101126443 A CN 101126443A
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- fuel tank
- exhaust port
- actuating unit
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Abstract
A power transmission device is provided with a gear mechanism, a case, an oil pump and an oil tank. The gear mechanism is arranged to operate in coordination with a drive source. The case houses the gear mechanism and stores oil for lubricating the gear mechanism. The oil pump is arranged to operate in coordination with the drive source so as to pump the oil stored in the case to lubricate the gear mechanism. The oil tank is arranged to collect a portion of the oil pumped from the oil pump. The oil tank includes a first discharge outlet arranged to discharge the oil collected in the oil tank to the case and a second discharge outlet arranged to discharge collected oil to the case when an amount of the oil collected in the oil tank is equal to or larger than a prescribed amount.
Description
Technical field
The present invention relates to a kind of actuating unit.
Background technique
Generally, the actuating unit that in vehicle, uses be with the driving source of powered vehicle, for example with the gear mechanism of motor linkage be accommodated in can the housing of store oil in (with reference to patent documentation 1).In patent documentation 1, the common actuating unit that improves of the mechanical efficiency when disclosing lubricating efficiency in the time of can making low speed rotation and high speed rotating.According to this actuating unit, when vehicle stops or during low speed driving, when stopping or during low speed rotation with the gear mechanism of driving source interlock, because the pressurized delivered amount of the oil of the mechanical type oil pump that is driven by gear mechanism is few, therefore, the oil level of lower housing portion is risen, play lubrication by oil sump formula lubricating method, thus, lubricating efficiency is improved.In addition, when running at high speed, the pressurized delivered amount of the oil of mechanical type oil pump for a long time, the pressure lubrication that the oil by pressurized delivered carries out obtains lubrication, therefore, reduce by the stirring resistance that oil level is descended and rotary component is caused, thus, improve mechanical efficiency.
Patent documentation 1:(Japan) spy opens flat 8-105520 communique
But in above-mentioned prior art, if beginning is accumulated oil to fuel tank, the oil level of lower housing portion can be accompanied by the increase of pump speed and descend point-blank, is filled until fuel tank.
Be accompanied by the increase of gear mechanism rotating speed and under the situation about descending point-blank, consider the following problem that produces at oil level.
At first, gear mechanism is for when the vehicle launch etc. during than low speed rotation, can play sufficient lubrication by the oil sump formula is lubricated, setting the oil level rate of descent slows down, at this moment, the lubricating efficiency during low speed rotation is good, still, when rotating, higher speed becomes the rotating speed that can fully obtain the lubrication of pressure lubrication, even do not need the oil sump formula lubricated, owing to oil level can only descend gradually along straight line, so can not reduce the stirring resistance effectively.
On the other hand, the increase of the stirring resistance that produces in order to suppress to be accompanied by the rotating speed rising is set the oil level rate of descent to accelerate, and at this moment, oil level descends in advance, lubricates the lubrication that plays by the oil sump formula in the time of may not obtaining low speed rotation fully.
Summary of the invention
The object of the present invention is to provide a kind of actuating unit, be accompanied by the increase of pump speed, but can make require the oil sump formula lubricated than low speed rotation the time lubricating efficiency and the mechanical efficiency during the higher speed rotation of pressure lubrication all improve.
The actuating unit of first aspect present invention to achieve these goals has: housing that can store oil; Gear mechanism, this gear mechanism are incorporated in the described housing and with driving source and link; Oil pump, this oil pump and the interlock of described driving source are carried out pressurized delivered to the oil that is stored in the described housing, with lubricated described gear mechanism; Fuel tank, this fuel tank are accumulated a part from the oil of described oil pump pressurized delivered, and have first exhaust port that the oil that will accumulate discharges and be second exhaust port that oil that established amount will be accumulated when above is discharged in described housing in oily storage capacity in described housing.
In addition, on the basis of above-mentioned actuating unit, described fuel tank has first fuel tank and second fuel tank, described first fuel tank has described first exhaust port, described second fuel tank has described second exhaust port, oily storage capacity in described first fuel tank is specified value when above, and oil is supplied with and discharged from described second exhaust port to second fuel tank.
In addition, on the basis of above-mentioned actuating unit, the flow path cross sectional area of described second exhaust port is littler than the flow path cross sectional area of described first exhaust port.
In addition, on the basis of above-mentioned actuating unit, the flow path length of described second exhaust port is longer than the flow path length of described first exhaust port.
In addition, on the basis of above-mentioned actuating unit, described fuel tank is provided with the 3rd exhaust port above described first exhaust port.
In addition, on the basis of above-mentioned actuating unit, described fuel tank has the air scoop that is communicated with the air layer of described enclosure interior.
According to the present invention, be accompanied by the increase of pump speed, but can make require the oil sump formula lubricated than low speed rotation the time lubricating efficiency and the mechanical efficiency during the higher speed rotation of pressure lubrication all improve.
Description of drawings
Fig. 1 is the axial section of the actuating unit overview of expression first mode of execution;
Fig. 2 is the axial orthogonal of the actuating unit of first mode of execution;
Fig. 3 (a) is the figure of relation of pump speed and oil level of the actuating unit of expression first mode of execution, and Fig. 3 (b) is the figure of relation of delivery volume that represents the oil of pump speed and oil pump pressurized delivered;
Fig. 4 is the axial orthogonal of the actuating unit of first mode of execution;
Fig. 5 is the axial orthogonal of the actuating unit of first mode of execution;
Fig. 6 is the axial orthogonal of the actuating unit of second mode of execution;
Fig. 7 (a) is the figure of relation of pump speed and oil level of the actuating unit of expression second mode of execution, and Fig. 7 (b) is the figure of relation of delivery volume that represents the oil of pump speed and oil pump pressurized delivered;
Fig. 8 is the radial section figure of the actuating unit of second mode of execution;
Fig. 9 (a) is the figure of relation of pump speed and oil level of the actuating unit of expression second mode of execution, and Fig. 9 (b) is the figure of relation of delivery volume that represents the oil of pump speed and oil pump pressurized delivered;
Figure 10 is the axial orthogonal of the actuating unit of the 3rd mode of execution.
Description of reference numerals
100: actuating unit
1: fuel tank
1R: first fuel tank
1L: second fuel tank
2: gear mechanism
3f, 3r: planet carrier block bearing
4: pinion shaft
5f, 5r: needle bearing
6: oil pump
7: lower housing portion
8: housing
9: supplying mouth
10: oil circuit
11R: first exhaust port
11L: second exhaust port
12: oil circuit
13: relief valve
14: connecting port (air scoop)
15: the three exhaust ports
16: communication path
16R: connecting port (first connecting port)
16L: connecting port (second connecting port)
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
(first mode of execution)
Fig. 1 is the axial section of actuating unit 100 overviews of expression first mode of execution, and Fig. 2 is the axial orthogonal of actuating unit 100.In addition, in the present embodiment, oil has lubrication effect and cooling effect.
At first, the overview to the actuating unit 100 of present embodiment describes.
Actuating unit 100 shown in Figure 1 has substantially: housing 8, and it can store oil; Gear mechanism 2, it is incorporated in the housing 8, links with driving source; Oil pump 6, the interlock of itself and driving source will be stored in the oily pressurized delivered of the bottom 7 of housing 8, with to gear mechanism 2 pressure lubrications; Fuel tank 1, it accumulates the oil of a part from oil pump 6 pressurized delivered.
Driving source is not shown motor, and gear mechanism 2 is connected on the motor reel 2m.
In addition, be provided with relief valve 13 in the oil circuit 10 between oil pump 6 and supplying mouth 9 and oil circuit 12, preventing becomes high pressure more than needing to the oil that supplying mouth 9 and oil circuit 12 supplied with, and, alleviate the load of oil pump 6.It is desirable to, can be fully in the scope of the oil mass of oilgear mechanism 2 when pressure lubrication through oil circuit 12 pressurized delivered, the oil pressure relief of stream valve 13 is set at the low pressure of trying one's best.
The first fuel tank 1R is provided with up and makes the supplying mouth 9 that is flowed into by the oil of oil pump 6 pressurized delivered, and has the oil that is communicated with lower housing portion 7 and will the accumulates first exhaust port 11R to lower housing portion 7 discharges.
The second fuel tank 1L has the second exhaust port 11L that the oil that is communicated with lower housing portion 7 and will accumulates is discharged to lower housing portion 7.
As long as supplying mouth 9 is not arranged on the position of supplying with oil simultaneously to the first fuel tank 1R, the second fuel tank 1L both sides, in the present embodiment, the topmost part from fuel tank 1 is set on the position that the first fuel tank 1R side is offset slightly, oily to supply with to the first fuel tank 1R side.
Then, the effect to present embodiment describes with reference to Fig. 1 and Fig. 3 (a) and (b).
Fig. 3 (a) is the rotating speed (rpm) of expression oil pump and the figure of the relation of the fuel head (oil level) that is stored in the oil of lower housing portion 7.Fig. 3 (b) is the rotating speed (rpm) of expression oil pump and the figure of the relation of the supply flow of the oil of oil pump 6 pressurized delivered.
At this, Q
ROBe the oily discharge flow rate (first discharge flow rate) of the first exhaust port 11R, Q
LOIt is the oily discharge flow rate (second discharge flow rate) of the second exhaust port 11L.In addition, V
RCBe the oily storage capacity of the first fuel tank 1R when being full of oil, V
LCBe the oily storage capacity of the second fuel tank 1L when being full of oil.Q is from the supply flow of supplying mouth 9 to the oil of fuel tank 1 supply by oil pump 6 pressurized delivered.
1. at first, under vehicle halted state (oil pump halted state), oil level is h
HThis oil level h
HThe position is immersed in height in the oil with bearing 3f, 3r and needle bearing 5f, 5r.
2. when vehicle launch, oil pump 6 with by engine-driven gear mechanism 2 interlocks and be driven, the oil of lower housing portion 7 is supplied with to the first fuel tank 1R from supplying mouth 9 by oil circuit 10, and a part is supplied with to bearing 3f, 3r and needle bearing 5f, 5r by oil circuit 12 beginnings that are branched.
The section area of the first exhaust port 11R that is provided with in the lower end of the first fuel tank 1R is set to can be with the first discharge flow rate Q
ROOil is discharged to lower housing portion 7.
, gear mechanism 2 low in the speed of a motor vehicle is under the state of low speed rotation, and low and supply flow Q that supply with to the first fuel tank 1R does not reach the first discharge flow rate Q at the rotating speed of the oil pump 6 that is driven by gear mechanism 2
ROThe time, the oil of supplying with the first fuel tank 1R is all discharged to lower housing portion 7, and oil level is fixedly remained on h
H
3. when the rotating speed of speed of a motor vehicle rising, gear mechanism 2 also rose, the rotating speed of oil pump 6 also rose, if supply flow Q surpasses the first discharge flow rate Q
ROWhen (the A point of Fig. 3), then the oil beginning is accumulated in the first fuel tank 1R, and correspondingly, oil level descends.
4. the storage capacity in the first fuel tank 1R is positioned at specified value V
RCWhen above, the first fuel tank 1R is full of after the oil, oil flow into the second fuel tank 1L (the B point of Fig. 3) via communication path 16.
The section area of the exhaust port 11L that the lower end of the second fuel tank 1L is provided with is set at can be with the second discharge flow rate Q
LODischarge to lower housing portion 7.
Flow (the supply flow Q-first discharge flow rate Q at the oil that flows into the second fuel tank 1L
RO) do not reach the second discharge flow rate Q
10The time, the oil that flows into the second fuel tank 1L is all discharged to lower housing portion 7, and the oil level of lower housing portion 7 remained on regularly reduced the oil mass V that accumulates among the first fuel tank 1R
RCH
M
This oil level h
MBe height with pinion shaft 4 submergences.
5. in addition, rise, flow into the flow (Q-Q of the second fuel tank 1L when the speed of a motor vehicle
RO) above the second discharge flow rate Q
LOWhen (the C point of Fig. 3), the oil beginning is accumulated in the second fuel tank 1L, and correspondingly, oil level descends.
6. the oily storage capacity as the second fuel tank 1L is V
LCThe time, when second fuel tank also is full of oil (the D point of Fig. 3), then do not accumulate oil more, the oil level of lower housing portion 7 is remained on minimum h regularly
L
This oil level h
LThe height of the oil of storing in lower housing portion 7 during for fuel tank 1 end-of-fill is the height lower than the foot of gear mechanism 2.
In addition, in the present embodiment, owing to make the first discharge flow rate Q
ROWith the second discharge flow rate Q
LOIdentical, so be accumulated between the A-B of the first fuel tank 1R with the C-D that is accumulated in the second fuel tank 1L between the rate of descent (inclination of the curve among Fig. 3) of oil level equate.
Then, describe with reference to the effect of Fig. 3 (a) and (b) present embodiment.
As a comparison case, with reference to dot and dash line and the double dot dash line of Fig. 3 (a).The straight line that dot and dash line and double dot dash line are represented is that the rotating speed that is accompanied by oil pump increases the situation that oil level is descended point-blank.
Under the situation of oil level rate of descent fast (dot and dash line), if pump speed surpasses the B point, then oil level is lower than h
MAt this moment, finish the oil sump formula of needle bearing 5f, 5r is lubricated.But, the speed of autorotation of planetary pinion 2p is than the rotating speed height of other solid of rotation (planet carrier 2c, sun gear 2s, oil pump etc.), so need carry out lubricated fully to needle bearing 5f, 5r, but because pump speed (supply flow Q) is low and can not be lubricated forcibly, so the lubricated deficiency easily of needle bearing 5f, 5r.
In order to prevent the generation of above-mentioned situation, lubricate until needle bearing 5f, 5r are carried out pressure lubrication fully as long as carry out the oil sump formula.If pump speed (supply flow Q) surpasses the C point, then needle bearing 5f, 5r are carried out pressure lubrication fully, so when pump speed does not reach the C point, as long as oil level is remained on h
MSo that needle bearing 5f, 5r are immersed in the oil and get final product.
To achieve these goals, when the oil level rate of descent is slowed down (double dot dash line), guarantee sufficient oil level, but, can not reduce to stir resistance, cause the deterioration of mechanical efficiency because the oil level rate of descent is slow later at the C point at the C point.
To this, according to present embodiment, represent ground, oil level is descended interimly as solid line among Fig. 3 (a), guarantee the oil level (with reference to the arrow 1 of Fig. 3 (a)) of requirement requiring the lubricated rotary speed area of oil sump formula (than low speed rotation time), in addition, the rotary speed area (during the higher speed rotation) in the energy pressure lubrication can make the very fast decline of oil level (with reference to the arrow 2 of Fig. 3 (a)).
In addition, require lubricated rotary speed area of oil sump formula and rotary speed area that can pressure lubrication not to be limited to specific speed range, according to the difference of the formation of gear mechanism etc. and difference.
According to above-described present embodiment, play following remarkable result, promptly, owing to have a plurality of fuel tank 1R, 1L, be accompanied by the increase of the rotating speed of gear mechanism 2, can change the oil level in the housing interimly, thus, when the few low speed of the discharge capacity of discharging from oil pump 6, lubricated as the oil sump formula, bearing or gear meshing portion are supplied with sufficient lubricating oil, then, the speed of a motor vehicle rises, relative bearing 3f, the position of 3r or pinion shaft 4 makes the oil level position descend when guaranteeing necessary lubricant oil interimly, becomes pressure lubrication state completely at the high-speed region that obtains sufficient discharge capacity from oil pump 6, splashing of the lubricant oil that the inhibition solid of rotation causes reduced and stirred drag.
Thus, be accompanied by the increase of pump speed, but can obtain requiring the oil sump formula lubricated than low speed rotation the time lubricating efficiency and the mechanical efficiency during the higher speed rotation of pressure lubrication the two.
In the present embodiment, the communication path 16 that is communicated with the first fuel tank 1R and the second fuel tank 1L is set on the top of fuel tank 1, but the position of communication path 16 is not limited to this position, can be arranged on arbitrary position (apart from the height of fuel tank lower end connecting port) (with reference to Fig. 4).In addition, be arranged under the situation of arbitrary position, oil is accumulated the moment, the arrival B point shown in Figure 3 of height arbitrarily from the fuel tank lower end in the first fuel tank 1R.Thus, owing to can determine the volume of the first fuel tank 1R by the position of adjusting access 16, therefore, can adjust oil level h
M
In addition, in the present embodiment, be illustrated with two as the first fuel tank 1R and the second fuel tank 1L, but also can be for more than three, fuel tank can also have the 3rd fuel tank, the 4th fuel tank ....
At fuel tank is three when above, and a plurality of communication paths 16 by setting is communicated with a plurality of fuel tanks can carry out changing to oil level interimly.In addition, the number of corresponding fuel tank increases the step in stage, and then, as mentioned above, can be according to the oil level that each stage is adjusted in the position that is provided with of the communication path 16 that between each fuel tank, is provided with.In addition, be provided with under the situation of a plurality of fuel tanks, can be arranged on the periphery of gear mechanism 2 as illustrated in fig. 2, also can be arranged in addition in the housing 8.
In addition, have under the situation of a plurality of fuel tanks, in fuel tank, the communication path position that (comprises access 16) more than 16 also can be provided with and the connecting port 14 (being equivalent to air scoop) (with reference to Fig. 5) of housing 8 internal communication.At this moment, be accompanied by that vehicle stops, when oil pump 6 also stops, making fuel tank top become the atmosphere opening state by this connecting port 14, the oil that is accumulated in the fuel tank is discharged swimmingly from exhaust port 11R, the 11L of lower end, lubricant oil can turn back to lower housing portion 7.Thus, even vehicle is after stopping during anxious starting, oil level is also guaranteed, can obtain preventing insufficient lubrication based on the lubricated lubrication of oil sump formula.
In addition, gear mechanism 2 shown in present embodiment, when being fixed on ring gear (internal gear) 2i on the housing 8, if with the periphery configuration of fuel tank 1 along ring gear 2i, then when the vibration of gear mechanism 2 is delivered to the surface in housing, by being accumulated in can the decay vibration of gear mechanism 2 of oil in the fuel tank 1, can reduce noise.
(second mode of execution)
In second mode of execution, the difference with first mode of execution is described, the repetitive description thereof will be omitted.
Fig. 6 is the axial orthogonal of the lubricating structure of present embodiment, and Fig. 7 is the figure of the relation of expression rotating speed of gear mechanism and oil level.
With reference to Fig. 6, Fig. 7 the lubricating structure and the lubrication of present embodiment are described.
Fig. 6 is that the flow path cross sectional area of the second exhaust port 11L of the second fuel tank 1L lower end is than the little embodiment of flow path cross sectional area of the first exhaust port 11R of the first fuel tank 1R lower end.
Thus, the second discharge flow rate Q
ROLess than the first discharge flow rate Q
LO, the oil savings speed of the oil savings velocity ratio first fuel tank 1R of the second fuel tank 1L is fast, after pump speed surpasses the C point, can make oil level drop to h apace
L, after pump speed surpassed the C point, it was lubricated to finish the oil sump formula apace.
As mentioned above, littler by the flow path cross sectional area that makes the second exhaust port 11L than the flow path cross sectional area of the first exhaust port 11R, at the rotary speed area that obtains sufficient lubrication by pressure lubrication, oil level is descended rapidly.By this lubricating structure, the oil level rate of descent is changed, promptly, when oil level is descended, lubricated rotary speed area (during the first fuel tank 1R accumulates) the oil level rate of descent of oil sump formula is slack-off requiring, accelerate in rotary speed area (during the second fuel tank 1L accumulates) oil level rate of descent that can pressure lubrication in addition, and, can reduce the stirring resistance more effectively, realize the further raising of mechanical efficiency.
In the present embodiment, the size to the flow path cross sectional area of the first exhaust port 11R and the second exhaust port 11L is provided with difference and plays effect in advance, still, uses following structure also can obtain same effect.
Flow path length to the first exhaust port 11R and the second exhaust port 11L is provided with difference in advance, makes the flow path length of the second exhaust port 11L longer than the flow path length of the first exhaust port 11R.Thus, the resistance difference when oil is discharged can obtain same effect.Can replace the size of flow path sectional area that the scheme of difference is set or be provided with in flow path sectional area size on the basis of scheme of difference being suitable in the scheme that flow path length is provided with difference.
Supplying mouth 9 at fuel tank 1 is the throttle structure with pipeline of specific length, the first exhaust port 11R and the second exhaust port 11L are under the situation of hole structure that does not have pipeline, at oil pump low speed rotation and oil when being low-temperature condition, the pipeline of supplying mouth 9 becomes obstruction, the oil of fuel tank 1 is given in restriction, and, owing to the first exhaust port 11R and the second exhaust port 11L make resistance force diminishes for the hole structure that does not have pipeline and oil are discharged, therefore, limited the decline of oil level, thus, oil level rate of descent during low speed rotation is slack-off, can obtain the lubricated lubrication of oil sump formula reliably.In addition, attend by driving source and become high speed rotating, oily temperature also rises, and therefore, the rising that can be accompanied by rotating speed is accelerated the oil level rate of descent.
In addition, the supplying mouth 9 and the first exhaust port 11R, the second exhaust port 11L also can use the marmem that the opening footpath changes according to the oil temperature.
In addition, as shown in Figure 8, can make the pressure in the corresponding fuel tank 1R of opening area, the 1L of the first exhaust port 11R and the second exhaust port 11L and change.On the second exhaust port 11L, be provided with and act on the valve body that elastomeric elastic forces such as spring are arranged.Resilient force extends the direction of open area upwards promoting valve body.In addition, not shown limiter is set, descends limit most downwards, also can form the path that makes oil turn back to lower housing portion 7 even valve body is pressed to.
Omit diagram, the first exhaust port 11R is provided with too and acts on the valve body that elastomeric elastic forces such as spring are arranged.
By forming this structure, when the interior pressure of fuel tank 1R, 1L surpassed the pressure of regulation, the opening area of the first exhaust port 11R and the second exhaust port 11L diminished, and the discharge capacity of discharging reduces from here, accumulating of oil speeds up the very fast decline in the pasta position of lower housing portion 7 among fuel tank 1R, the 1L.
In addition, when car speed descends, owing to reduce from the delivery volume Q of oil pump 6 supplies, the interior drops of fuel tank 1, it is big that the opening area of the first exhaust port 11R and the second exhaust port 11L becomes, and oil can be discharged to lower housing portion 7 soon when vehicle stops.Thus,, also the pasta position can be guaranteed, insufficient lubrication can be do not produced even during the anxious starting after vehicle stops.Thus, the rate of descent of oil level is changed.
In addition, supplying mouth 9 and/or exhaust port 11R, 11L also can the use traffic modulating valve or solenoid valve etc.In addition, when using these valves that can control, fuel tank is set to one, structure that exhaust port is provided with one or more also can play effect.In addition, when using the valve that to control, can as shown in Figure 9, interimly adjust oil level.
What in addition, oil pump also can be for electronic controlling type.
(the 3rd mode of execution)
In the 3rd mode of execution, illustrate and the difference of first mode of execution that the repetitive description thereof will be omitted.
Figure 10 is the axial orthogonal of the actuating unit of present embodiment.
With reference to Figure 10, the lubricating structure and the lubrication of present embodiment described.
Figure 10 be except the first exhaust port 11R and the second exhaust port 11L, the bottom of the first fuel tank 1R above and communication path 16 below the fuel tank sidewall be provided with the mode of execution of the 3rd exhaust port 15 that is communicated with lower housing portion 7.Identical with first mode of execution, beginning after the first fuel tank 1R supplies with oil, if lubricant oil is filled to exhaust port 15, because oil also can be discharged to lower housing portion 7 from the 3rd exhaust port 15, and then the oil level of lower housing portion 7 is descended interimly, as gear mechanism, even have in many places under the situation of highly different bearings, also can guarantee suitable oil level, can prevent insufficient lubrication corresponding to each bearing.In addition, in Figure 10, exhaust port 15 only is arranged on the first fuel tank 1R, but also can perhaps be arranged on fuel tank 1R, the 1L both sides only on the second fuel tank 1L.In addition, Figure 10 is based on that Fig. 2 describes, and still, the number of fuel tank is not limited to two.When the fuel tank number is one,, oil level is descended interimly by a plurality of exhaust ports being set at different height place, distance fuel tank bottom.In addition, according to the number that exhaust port is set, the step in stage increases, and then, also can be according to the oil level that each stage is adjusted in position (Gao Du interval separately) that is provided with of a plurality of exhaust ports.In addition, obviously,, also can make the oil level rate of descent optimization in each stage by changing the size (flow path cross sectional area or flow path length) of exhaust port.
As mentioned above, " stage " of the present invention be meant Fig. 3, Fig. 7 and variation shown in Figure 9.In addition, in described Fig. 9, be included in the curvilinear motion that forms convex between the A-D by an A, C, D.
Claims (7)
1. actuating unit, this actuating unit has:
Housing that can store oil;
Gear mechanism, this gear mechanism are incorporated in the described housing and with driving source and link;
Oil pump, this oil pump and the interlock of described driving source are carried out pressurized delivered with lubricated described gear mechanism to the oil that is stored in the described housing;
Fuel tank, this fuel tank are accumulated a part from the oil of described oil pump pressurized delivered, and have first exhaust port that the oil that will accumulate discharges and be second exhaust port that oil that established amount will be accumulated when above is discharged in described housing in oily storage capacity in described housing.
2. actuating unit as claimed in claim 1, wherein, described fuel tank has first fuel tank and second fuel tank,
Described first fuel tank has described first exhaust port,
Described second fuel tank has described second exhaust port, and when the oily storage capacity in described first fuel tank is specified value when above, oil is fed to described second fuel tank to discharge from described second exhaust port.
3. actuating unit as claimed in claim 1 or 2, wherein, the flow path cross sectional area of described second exhaust port is littler than the flow path cross sectional area of described first exhaust port.
4. actuating unit as claimed in claim 1 or 2, wherein, the flow path length of described second exhaust port is longer than the flow path length of described first exhaust port.
5. actuating unit as claimed in claim 1, wherein, described fuel tank is provided with the 3rd exhaust port above described first exhaust port.
6. actuating unit as claimed in claim 1 or 2, wherein, described fuel tank has the air scoop that is communicated with the air layer of described enclosure interior.
7. actuating unit as claimed in claim 2, wherein, described first fuel tank is provided with the 3rd exhaust port above described first exhaust port.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006221661 | 2006-08-15 | ||
| JP221661/06 | 2006-08-15 | ||
| JP147234/07 | 2007-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101126443A true CN101126443A (en) | 2008-02-20 |
Family
ID=39094541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101409684A Pending CN101126443A (en) | 2006-08-15 | 2007-08-15 | Power transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101126443A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439333A (en) * | 2010-02-04 | 2012-05-02 | 丰田自动车株式会社 | Lubrication oil supply device |
| CN107339413A (en) * | 2016-04-29 | 2017-11-10 | Zf 腓德烈斯哈芬股份公司 | Lubricant guiding cover and the transmission device equipped with lubricant guiding cover |
| CN107664202A (en) * | 2017-11-14 | 2018-02-06 | 章丘市宇龙机械有限公司 | A kind of granulator pinch roller bearing lubrication system |
| CN109611540A (en) * | 2018-12-27 | 2019-04-12 | 南京高精轨道交通设备有限公司 | The tank shell that electric car gear box lubricating oil oil level is adjusted |
-
2007
- 2007-08-15 CN CNA2007101409684A patent/CN101126443A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439333A (en) * | 2010-02-04 | 2012-05-02 | 丰田自动车株式会社 | Lubrication oil supply device |
| CN102439333B (en) * | 2010-02-04 | 2015-03-11 | 丰田自动车株式会社 | Lubrication oil supply device |
| CN107339413A (en) * | 2016-04-29 | 2017-11-10 | Zf 腓德烈斯哈芬股份公司 | Lubricant guiding cover and the transmission device equipped with lubricant guiding cover |
| CN107664202A (en) * | 2017-11-14 | 2018-02-06 | 章丘市宇龙机械有限公司 | A kind of granulator pinch roller bearing lubrication system |
| CN107664202B (en) * | 2017-11-14 | 2023-04-07 | 山东宇龙机械有限公司 | Granulator press wheel bearing lubricating system |
| CN109611540A (en) * | 2018-12-27 | 2019-04-12 | 南京高精轨道交通设备有限公司 | The tank shell that electric car gear box lubricating oil oil level is adjusted |
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