CN1831382A - Overflow tube - Google Patents

Overflow tube Download PDF

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Publication number
CN1831382A
CN1831382A CNA2006100583373A CN200610058337A CN1831382A CN 1831382 A CN1831382 A CN 1831382A CN A2006100583373 A CNA2006100583373 A CN A2006100583373A CN 200610058337 A CN200610058337 A CN 200610058337A CN 1831382 A CN1831382 A CN 1831382A
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CN
China
Prior art keywords
working oil
spill pipe
liquid level
opening
housing
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Granted
Application number
CNA2006100583373A
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Chinese (zh)
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CN100449179C (en
Inventor
中村和明
木村弘道
渡辺和之
宫崎光史
草本大辅
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Toyota Motor Corp
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Toyota Motor Corp
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Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of CN1831382A publication Critical patent/CN1831382A/en
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Publication of CN100449179C publication Critical patent/CN100449179C/en
Expired - Fee Related legal-status Critical Current
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/0408Exchange, draining or filling of transmission lubricant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/0447Control of lubricant levels, e.g. lubricant level control dependent on temperature
    • F16H57/0449Sensors or indicators for controlling the fluid level
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/045Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F16H57/0452Oil pans

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

An overflow tube is provided at an oil pan and when the oil pan receives an amount of a working fluid exceeding a prescribed amount the overflow tube causes the fluid to overflow to allow the fluid to have a level set at a prescribed level. The overflow tube has an end portion positioned in the oil pan and defining an opening of a drain hole receiving and passing the fluid overflowing. The end portion has a curved surface facing vertically upward and extending to surround the opening of the drain hole, and curving in a direction in contact with a generally horizontal direction. The overflow tube can thus help to set the fluid's level at a prescribed level precisely.

Description

Spill pipe
The Japanese patent application No.2005-062770 that this non-provisional application was submitted to Japan Patent office based on March 7th, 2005, the full content that is incorporated herein this application for your guidance.
Technical field
Present invention relates in general to a kind of spill pipe, more specifically, relate to a kind of spill pipe that is used to control the pasta (oil level) in the housing.
Background technique
For traditional oil level control, for example, Japanese patent laid-open 10-213210 discloses a kind of automatic transmission that is intended to strengthen the operability that stores the established amount working oil.Disclosed automatic transmission is provided with and is used for working oil is introduced the oily intake of grease chamber and allowed the oil that working oil is overflowed the grease chamber to regulate mouth.Thus, can in the working oil overflow, replenish working oil, allow people to confirm to have stored the working oil of established amount.
In addition, Japanese Utility Model is real opens flat No.05-017336 and disclose and a kind ofly can helps to destroy the surface tension of fuel oil to prevent the once petroleum combustion equipment oil supply tank of additional great amount of fuel oil.Disclosed oil supply tank has a plurality of recessed on the surface that is arranged in its top place and limits the fixedly pasta contact with pasta.This surface is towards vertical downward direction.
As disclosed among the Japanese patent laid-open 10-213210, when introduce than established amount Duo oily the time, utilize the oil level control of overflow oil to be discharged into the outside pasta is set in the position of the end of pipe via spill pipe.
Yet oil has surface tension, and in fact, pasta is set in the liquid level place than high several millimeters of tube end.The pasta of She Dinging is because the fluctuation etc. of oily introducing condition, oil is unsettled like this, and error can occur introducing.In addition, it also causes pipe to be difficult to stop oil to flow out this pipe, and people can not determine when use oil drain plug to seal this pipe, to cause the operability worsens of more changing oil.
Summary of the invention
The present invention makes for overcoming above-mentioned shortcoming, and it imagines a kind of spill pipe that can help pasta is arranged on exactly the regulation liquid level.
One aspect of the present invention provides a kind of and is arranged on the housing place and makes the amount of the working oil that surpasses established amount that is received by described housing overflow the spill pipe that is set in regulation liquid level place with the liquid level with described working oil.This spill pipe comprises the end that is arranged in described housing and limit receives and flow through the opening of the described working oil of overflowing.This end has vertical surface upwards and extend into around described opening and along the flexure plane of the direction bending that contacts with the cardinal principle substantially horizontal.It should be noted that " vertical surface upwards " refers to respect to level (perhaps vertical with Vertical direction straight line) face overhead, its corresponding to from direction vertically upward to the scope of substantially horizontal.
So the spill pipe that constitutes has the flexure plane towards the direction bending that contacts with the cardinal principle substantially horizontal.The working oil that liquid level promotes around the end via surface tension can import opening along flexure plane.Thereby the work oil surface tension is destroyed, and the liquid level of this working oil can easily be set in the regulation liquid level as expection.
Another aspect of the present invention provides a kind of and is arranged on the housing place and makes the amount of the working oil that surpasses established amount that is received by described housing overflow the spill pipe that is set in regulation liquid level place with the liquid level with described working oil.This spill pipe comprises the end that is arranged in described housing and limit receives and flow through the opening of the described working oil of overflowing.This end have vertical surface upwards and extend into around described opening and from the periphery of described end towards plane of inclination that described opening tilts vertically downward.
So the spill pipe that constitutes has from filling with the end of working oil towards plane of inclination that opening tilts vertically downward.The working oil that liquid level promotes around the end via surface tension can import opening along the plane of inclination.Thereby the work oil surface tension is destroyed, and the liquid level of this working oil can easily be set in the regulation liquid level as expection.
Another aspect of the present invention provides a kind of and is arranged on the housing place and makes the amount of the working oil that surpasses established amount that is received by described housing overflow the spill pipe that is set in regulation liquid level place with the liquid level with described working oil.This spill pipe comprises the end that is arranged in described housing and limit receives and flow through the opening of the described working oil of overflowing.Described end has vertical surface upwards and extend into around described opening and form the surface of uneven shape.
The spill pipe that the end has uneven shape surface can contact with working oil on the surface with increase area.This can strengthen the fluid guiding effect owing to capillarity (that is, the liquid surface that contacts with solid is by the effect of this solid absorption), to guide to the opening that working oil contacts with the surface more energetically.Thereby the work oil surface tension is destroyed, and the liquid level of working oil can easily be set in the regulation liquid level as expection.
Preferably, described surface is formed the satin face shape.In addition, preferably, engrail is done on described surface, to have a plurality of teeth that are provided with along the periphery of described opening.In addition, preferably, described surface has the groove that extends towards described opening from the periphery of described end.So the spill pipe that constitutes allows more effectively to utilize capillarity fluid guiding effect.
One side more of the present invention provides a kind of and is arranged on the housing place and makes the amount of the working oil that surpasses established amount that is received by described housing overflow the spill pipe that is set in regulation liquid level place with the liquid level with described working oil.This spill pipe comprises: be arranged in described housing and limit the end that receives and flow through the opening of the described working oil of overflowing; Be arranged on place, described end and be the guide element of the rope form that extends towards described opening from the periphery of described end.
So the spill pipe level allowance that constitutes imports opening by capillarity along guide element around the working oil of end lifting via surface tension.Thereby the work oil surface tension is destroyed, and the liquid level of this working oil can easily be set in the regulation liquid level as expection.
Another aspect of the present invention provides a kind of and is arranged on the housing place and makes the amount of the working oil that surpasses established amount that is received by described housing overflow the spill pipe that is set in regulation liquid level place with the liquid level with described working oil.This spill pipe comprises the end that is arranged in described housing and limit receives and flow through the opening of the described working oil of overflowing.Described end has vertical surface upwards and extend into around described opening and be subjected to the surface that lipophile applies.
The spill pipe that the end has the surface of the lipophile of being subjected to coating allows working oil to have the surface that contacts with the end with the wrapping angle that reduces.Thereby the work oil surface tension is destroyed, and the liquid level of this working oil can easily be set in the regulation liquid level as expection.Note, be meant when contacting with liquids and gases, the angle of on the hydraulic fluid side, representing that liquid surface at the interface that is in contact with one another by three-phase and solid surface form on the surface of solid at this said " wrapping angle ".
From following detailed description of the present invention, above other purpose, feature, aspect and the advantage of reaching of the present invention will become more obvious in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the exploded view of automatic transmission that adopts first embodiment's spill pipe of the present invention;
Fig. 2 be automatic transmission shown in Figure 1 by dotted line II centered on the part amplification sectional view;
Fig. 3 is the plan view of the spill pipe when direction is seen shown in the arrow III in Fig. 2;
Fig. 4 is the sectional view that is used to illustrate the pasta that utilizes spill pipe setting shown in Figure 2;
Fig. 5 is the sectional view in exemplary variation of spill pipe shown in Figure 2;
Fig. 6 and 7 is respectively the sectional view in the second and the 3rd embodiment of spill pipe of the present invention;
Fig. 8 is the sectional view in first exemplary variation of spill pipe shown in Figure 7;
Fig. 9 A and 9B are respectively the perspective view in second exemplary variation and the sectional views of spill pipe shown in Figure 7;
Figure 10 A and 10B are respectively the perspective view in the 4th embodiment and the sectional views of spill pipe of the present invention;
Figure 11 is the perspective view in the 5th embodiment of spill pipe of the present invention; And
Figure 12 be spill pipe shown in Figure 11 by dotted line XII shown in Figure 11 centered on the part sectional view.
Embodiment
Now with reference to the description of drawings embodiments of the invention.In the accompanying drawings, identical or similar parts use identical reference character.
First embodiment
With reference to Fig. 1, automatic transmission 10 has by the housing that forms towards the case of transmission 11 of direction opening vertically downward and is the disc form and is installed on the case of transmission 11 oil sump 12 with the sealing aperture position.Accommodate gear, axle, bearing etc. in the case of transmission 11, export to live axle from the shift force of motor output.
The housing of automatic transmission 10 has sealing established amount working oil within it, and oil sump 12 receives this working oil.Working oil plays the effect that for example is called as automatic transmission fluid (ATF) and is used to allow handle gear shift sleeve and transmits the lubricant oil of fluid torque converter power, prevents that gear and other similar means parts from biting.Oil sump 12 has bottom 12m, and this bottom has and is positioned at position shown in the circle II and in order to the mechanism of Control work oil on liquid level.
With reference to Fig. 1 and 2, the 12m place, bottom of oil sump 12 is provided with to have from bottom 12m towards the spill pipe 21 of the inner space of oil sump 12 13 vertical cylindrical part 26 of up extending and the end 23 that is formed on a relative end with bottom 12m of cylindrical part 26.
Cylindrical part 26 has outer wall 28 and inwall 27 respectively, and forms around vertical extent central shaft 101 and be cylindric extension.The outside oil drainage hole 22 that is communicated with oil sump 12 is centered on by inwall 22.Notice that spill pipe 21 can be integrally formed with oil sump 12, perhaps the sidepiece with oil sump 12 is connected.In addition, oil sump 12 not necessarily will be arranged on oil sump 12 places.For example, it can be arranged on case of transmission 11 places.In addition, cylindrical part 26 can be crooked between bottom 12m and end 23.
With reference to Fig. 1-3, end 23 forms and is horn-like from cylindrical part 26 and opens.Define the opening of oil drainage hole 22 in the position that centers on by end 23, and oil drainage hole 22 is communicated with inner space 13 in this position.End 23 forms around the solid of rotation of central shaft 101.More specifically, 23 edges, end circumferentially have same cross-sectional, and central shaft 101 is as the center.Working oil 31 and outer wall 28 contact and fill the periphery (that is, a side and end 23 are clipped in therebetween) opposite with oil drainage hole 22 of end 23.
End 23 has flexure plane 23a.Flexure plane 23a vertical surface makes progress and extends in the form of a ring around the opening of oil drainage hole 22.Flexure plane 23a forms curved shape to contact with the cardinal principle substantially horizontal.Flexure plane 23a forms directly and inwall 27 adjacency.Flexure plane 23a has the part 23q that extends towards inwall 27 from the part 23p that contacts with the cardinal principle substantially horizontal towards the vertical direction that changes toward lower direction along from the cardinal principle substantially horizontal.
The pasta that Fig. 4 explanation utilizes spill pipe shown in Figure 2 to set.More specifically, Fig. 4 illustrates the part shown in Figure 2 that is centered on by dotted line IV.With reference to Fig. 1-4, working oil 31 is introduced in the housing of automatic transmission 10 via the aperture (not shown) that runs through case of transmission 11 formation.When the working oil of being introduced 31 surpassed established amount, excessive working oil 31 just was discharged into the outside via the oil drainage hole 22 of spill pipe 21.
When doing like this, surface tension effects makes working oil 31 have the liquid level higher than the aperture position of spill pipe 21.Yet in the present embodiment, flexure plane 23a is arranged on the position of separating working oil 31 and oil drainage hole 22.Thereby its liquid level just is directed along flexure plane 23a, part 23q towards oil drainage hole 22 via the working oil 31 that surface tension promotes.Thus, the liquid level 31a ' of the lifting of working oil 31 is reduced to the essentially identical liquid level 31a of part 23p of liquid level and flexure plane 23a, and is set in that liquid level.In addition, the working oil 31 that is positioned at the liquid level place of lifting can not flow out oil drainage hole 22 gradually, so reduced the difficulty that this pipe stops working oil 31 to be discharged via oil drainage hole 22.This can strengthen the operability of level control.
With reference to Fig. 2, for further reducing the difficulty that stops working oil 31 to be discharged via oil drainage hole 22, the inwall 27 of spill pipe 21 can have the groove that forms within it along central shaft 101.Working oil can be moving along this concentrated flow, thereby be discharged into the outside rapidly via oil drainage hole 22.Notice that hereinafter Shuo Ming embodiment can comprise the inwall 27 that is provided with groove in it.
Set in case finish liquid level, just plug cock is installed on the spill pipe 21 with sealing oil drainage hole 22.
As the described the present invention of first embodiment in, spill pipe 21 is arranged on oil sump 12 places as housing, and when oil sump 12 receptions during more than the working oil 31 of established amount, spill pipe 21 overflows so that liquid level 31a is set in the regulation liquid level excessive working oil 31.Spill pipe 21 has the end 23 that is arranged on oil sump 12 inside and limits oil drainage hole 22 openings, and the opening of oil drainage hole 22 is as the opening that receives and flow through the working oil of overflowing.End 23 has the flexure plane 23a that vertical surface makes progress and extends into the direction bending that contacts with the cardinal principle substantially horizontal around the opening and the edge of oil drainage hole 22.
So the spill pipe of the present invention 21 among first embodiment who constitutes allows to have the end 23 deface tension force of flexure plane 23a.Thereby in assembling or maintenance automatic transmission 10 or when changing working oil 31 etc., working oil 31 can have and is easy to be set in the oil sump 12 the liquid level 31a at the regulation liquid level place of imagination in advance.This can for example prevent that liquid level 31a from reaching too high liquid level, and the stirring resistance that causes being contained between case of transmission 11 and the working oil 31 increases.The energy loss that this can help to reduce in the automatic transmission 10 prevents that also the temperature of working oil from increasing and thereby deterioration.In addition, liquid level 31a can be not low excessively, and can not suck air from the pump of oil sump 12 suction operation oil 31.Therefore, the reliability of automatic transmission 10 and serviceability strengthen.
In addition, because an amount of working oil 31 can be supplied to oil sump 12, can not consume working oil 31 in wasteness ground, this helps to reduce cost.In addition, can prevent imaginary the getting greatly of weight ratio of automatic transmission 10.
With reference to Fig. 5, the spill pipe 41 that provides as exemplary variation has cylindrical part 26 and the end 42 that is formed on cylindrical part 26 1 end places.End 42 directly 101 is cylindric extension with cylindrical part 26 adjacency and from cylindrical part 26 along central shaft.End 42 has the flexure plane 42a that is positioned at its extending end place.Flexure plane 42a vertical surface makes progress and extends into around the opening of oil drainage hole 22 and along the direction bending that contacts with the cardinal principle substantially horizontal.So the spill pipe 41 that constitutes is the same effective with spill pipe 21.
Notice that although spill pipe 21 is applied to automatic transmission 10 in the present embodiment, it also can be applicable to manual transmission, stepless speed variator (CTV) etc.In addition, the present invention can be applied to motor, excavator, working robot and other need control the wet sump machine of oil mass and liquid level similarly.
Second embodiment
In the present embodiment, layout that spill pipe among not repeat specification and first embodiment 21 is consistent.
With reference to Fig. 6, spill pipe 46 has cylindrical part 26 and is formed on the end 47 at an end place of cylindrical part 26.End 47 directly and cylindrical part 26 adjacency and 101 is cylindric extension from cylindrical part 26 along central shaft.End 47 has the plane of inclination 47a that is positioned at its extending end place.Plane of inclination 47a vertical surface makes progress and extends in the form of a ring around the opening of oil drainage hole 22.
Plane of inclination 47a have directly with outer wall 28 in abutting connection with and decentre axle 101 outer periphery 47p far away and directly and the nearer inner circumference edge 47q of inwall 27 adjacency and decentre axle 101.When inner circumference edge 47q saw, plane of inclination 47a formed vertically downward and extends from outer periphery 47p.Plane of inclination 47a is suitable for having the gradient that changes between outer periphery 47p and inner circumference edge 47q.
Therefore, its liquid level imports oil drainage hole 22 around the working oil 31 that spill pipe 46 promotes along plane of inclination 47a via surface tension.Thereby the liquid level 31a of working oil 31 is set to the height of the outer periphery 47p of plane of inclination 47a basic identical.
Second embodiment of the invention provides the spill pipe 46 with a kind of like this end 47, and end 47 is arranged on oil sump 12 inside and defines the opening that is used to receive and flow through the oil drainage hole 22 of the working oil of overflowing.End 47 has vertical surface upwards and extend into around the opening of oil drainage hole 22 and 47 periphery tilts vertically downward towards the opening of oil drainage hole 22 from the end plane of inclination 47a.
So the spill pipe 46 that constitutes can be realized the described similar effects with first embodiment.
The 3rd embodiment
In the present embodiment, layout that spill pipe among not repeat specification and first embodiment 21 is consistent.
With reference to Fig. 7, spill pipe 51 has cylindrical part 26 and is formed on the end 52 at an end place of cylindrical part 26.End 52 directly and cylindrical part 26 adjacency and 101 is cylindric extension from cylindrical part 26 along central shaft.End 52 has the uneven shape surface 52a that is positioned at its extending end place.Uneven shape surface 52a vertical surface makes progress and extends in the form of a ring around the opening of oil drainage hole 22.
Uneven shape surface 52a is respectively by forming along projection 53 that circumferentially is arranged alternately and recessed 54 surface around central shaft 101.Projection 53 and recessed 54 forms has end face 53a and bottom surface 54a respectively, thereby has step along the direction of central shaft 101.Recessed 54 form around central shaft 101 and radially extend.
The uneven shape surface 52 that forms thus makes the working oil 31 of filling around the openings of oil drainage hole 22 to form on the zone bigger when smooth at specific surface 52a and contacts with surperficial 52a.This can strengthen the capillary fluid guiding effect more energetically working oil 31 is imported oil drainage hole 22.Thereby the liquid level 31a of working oil 31 is set to the height of projection 53 end face 53a basic identical.It should be noted that for the projection 53 of different heights, recessed 54 and some other condition of different in width, liquid level 31a can be set at recessed 54 54a place, bottom surface.
Third embodiment of the invention provides the spill pipe 51 with a kind of like this end 52, and end 52 is arranged on oil sump 12 inside and defines the opening that is used to receive and flow through the oil drainage hole 22 of the working oil of overflowing.End 52 has vertical surface upwards and extend into around the uneven shape surface 52a of the opening of oil drainage hole 22.
So the spill pipe 51 that constitutes can be realized the described similar effects with first embodiment.
With reference to Fig. 8, have cylindrical part 26 and be formed on the end 57 at an end place of cylindrical part 26 as the spill pipe 56 of exemplary variation.End 57 have from the end 57 periphery see vertical surface upwards and around central shaft 101 along the circumferential serrated face 57a of indentation.It is basic identical that this layout allows the liquid level 31a of working oil 31 to be set to the height of the tooth top of serrated face 57a.Can realize and spill pipe 51 similar effects.
Fig. 9 is illustrated in spill pipe shown in Figure 7 or a kind of like this spill pipe 61 in second exemplary variation, spill pipe 61 has cylindrical part 26 and is formed on an end place of cylindrical part 26 and has the end 62 of uneven shape surface 62a, uneven shape surface 62a by around central shaft 101 every the surface of the projection 63 of 90 ° of settings be formed on the surface composition of the groove 64 between the adjacent protrusion 63.Projection 63 and groove 64 form has end face 63a and bottom surface 64a respectively, both common steps that form along central shaft 101 directions, and the area of end face 63a is less than the area of bottom surface 64a.It is basic identical that this layout allows the liquid level 31a of working oil 31 to be set to the height of the bottom surface 64a of groove 64.Can realize and spill pipe 51 similar effects.
In addition, as another exemplary variation, thereby the end can have and is formed the end face that the satin face shape is uneven shape.In this case, the end preferably has a kind of like this end face, the maximum height of this end face and minimum constructive height have 0.1mm or greater than 0.1mm, be preferably 0.3mm or greater than 0.3mm, more preferably for 0.5mm or greater than the height difference of 0.5mm.
The 4th embodiment
In the present embodiment, layout that spill pipe among not repeat specification and first embodiment 21 is consistent.
With reference to Figure 10, spill pipe 66 is made up of cylindrical part 26, the end 67 at an end place that is formed on cylindrical part 26 and the conductor rope 68 that is arranged on 67 places, end.End 67 directly and cylindrical part 26 adjacency and 101 is cylindric extension from cylindrical part 26 along central shaft.End 67 has the end face 67a that is positioned at its extending end place.End face 67a is formed in the plane of extending in a generally horizontal direction.Conductor rope 68 is positioned on the end face 67a and also extends to inwall 27 from outer wall 28.Note,, also can provide more than a conductor rope 68 although accompanying drawing only illustrates single conductor rope 68.
The working oil 31 that contacts with conductor rope 68 around the periphery of spill pipe 66 is towed to conductor rope 68 via capillarity, and imports oil drainage holes 22 along conductor rope 68.Thereby the liquid level 31a of working oil 31 is set to the height of end face 67a basic identical.
In the invention described above the 4th embodiment, spill pipe 66 comprises end 67 and conductor rope 68, it is inner and define the opening that is used to receive and flow through the oil drainage hole 22 of the working oil of overflowing that end 67 is arranged on oil sump 12, and conductor rope 68 is arranged on 67 places, end and stretches into rope form guide element the opening of oil drainage hole 22 as the periphery from end 67.
So the spill pipe 66 that constitutes can be realized the described similar effects with first embodiment.
The 5th embodiment
In the present embodiment, layout that spill pipe among not repeat specification and first embodiment 21 is consistent.
With reference to Figure 11 and 12, spill pipe 71 has cylindrical part 26 and is formed on the end 72 at an end place of cylindrical part 26.End 72 directly and cylindrical part 26 adjacency and 101 is cylindric extension from cylindrical part 26 along central shaft.End 72 has the end face 72a that is positioned at its extending end place.End face 72a is formed in the plane of extending substantially in a generally horizontal direction.End face 72a direct and outer wall 28 and inwall 27 both adjacency.The for example coated oleophilic coating 73 of end face 72a to form by titanium oxide.
Its liquid level contacts with the surperficial 73a of oleophilic coating 73 with the angle [alpha] that reduces around the working oil 31 that spill pipe 71 promotes via surface tension.Thereby the liquid level 31a ' of working oil 31 is reduced to and the essentially identical liquid level 31a of the height of surperficial 73a.Thus, working oil 31 has the liquid level that is set at that height.
Fifth embodiment of the invention provides the spill pipe 71 with a kind of like this end 72, and end 72 is arranged on oil sump 12 inside and defines the opening that is used to receive and flow through the oil drainage hole 22 of the working oil of overflowing.End 72 has vertical surface upwards and extend into around the opening of oil drainage hole 22 and be subjected to the end face 72a that lipophile applies.
So the spill pipe 71 that constitutes can be realized the described similar effects with first embodiment.
First to the 5th embodiment's spill pipe structurally appropriate combination to form different spill pipes.For example, first embodiment's spill pipe 21 can have the flexure plane 23a that is formed the satin face shape, and the 4th embodiment's spill pipe 66 can have the end face 67a that the lipophile of being subjected to applies.
Thus, the invention provides a kind of spill pipe that can help liquid level accurately is set in the regulation liquid level.
Although described and illustrated the present invention in detail, what should know understanding is, they only are illustrative and exemplary, are not determinate, and the scope of the invention is only limited by the clause of appended claims.

Claims (8)

1, a kind of housing (12) that is arranged on is located and the amount of the working oil (31) that surpasses established amount that is received by described housing (12) is overflowed the liquid level (31a) of described working oil (31) is set in the spill pipe at regulation liquid level place, this spill pipe comprises the end (23) that is arranged in described housing (12) and limit receives and flow through the opening of the described working oil of overflowing, and described end (23) have vertical surface upwards and extend into around described opening and along the flexure plane (23a) of the direction bending that contacts with the cardinal principle substantially horizontal.
2, a kind of housing (12) that is arranged on is located and the amount of the working oil (31) that surpasses established amount that is received by described housing (12) is overflowed the liquid level (31a) of described working oil (31) is set in the spill pipe at regulation liquid level place, this spill pipe comprises the end (47) that is arranged in described housing (12) and limit receives and flow through the opening of the described working oil of overflowing, described end (47) have vertical surface upwards and extend into around described opening and from the periphery of described end (47) towards plane of inclination (47a) that described opening tilts vertically downward.
3, a kind of housing (12) that is arranged on is located and the amount of the working oil (31) that surpasses established amount that is received by described housing (12) is overflowed the liquid level (31a) of described working oil (31) is set in the spill pipe at regulation liquid level place, this spill pipe comprises the end (52 that is arranged in described housing (12) and limit receives and flow through the opening of the described working oil of overflowing, 57,62), described end (52,57,62) has vertical surface upwards and extend into around described opening and form the surface (52a of uneven shape, 57a, 62a).
4, spill pipe according to claim 3 is characterized in that, described surface (52a) is formed the satin face shape.
5, spill pipe according to claim 3 is characterized in that, described surface (57a) does engrail, to have a plurality of teeth that are provided with along the periphery of described opening.
6, spill pipe according to claim 3 is characterized in that, described surface (62a) has the groove (64) that extends towards described opening from the periphery of described end (62).
7, a kind of housing (12) that is arranged on is located and the amount of the working oil (31) that surpasses established amount that is received by described housing (12) is overflowed the liquid level (31a) of described working oil (31) is set in the spill pipe at regulation liquid level place, and this spill pipe comprises:
Be arranged in described housing (12) and limit the end (67) that receives and flow through the opening of the described working oil of overflowing; With
Be arranged on described end (67) and locate and be the guide element (68) of the rope form that extends towards described opening from the periphery of described end (67).
8, a kind of housing (12) that is arranged on is located and the amount of the working oil (31) that surpasses established amount that is received by described housing (12) is overflowed the liquid level (31a) of described working oil (31) is set in the spill pipe at regulation liquid level place, this spill pipe comprises the end (72) that is arranged in described housing (12) and limit receives and flow through the opening of the described working oil of overflowing, and described end (72) have vertical surface upwards and extend into around described opening and be subjected to the surface (72a) that lipophile applies.
CNB2006100583373A 2005-03-07 2006-03-03 Overflow tube Expired - Fee Related CN100449179C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP062770/2005 2005-03-07
JP2005062770A JP2006242365A (en) 2005-03-07 2005-03-07 Overflow tube

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Application Number Title Priority Date Filing Date
CNA2008100885156A Division CN101245847A (en) 2005-03-07 2006-03-03 Overflow tube

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CN1831382A true CN1831382A (en) 2006-09-13
CN100449179C CN100449179C (en) 2009-01-07

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CNA2008100885156A Pending CN101245847A (en) 2005-03-07 2006-03-03 Overflow tube

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JP2006242365A (en) 2006-09-14
CN101245847A (en) 2008-08-20
CN100449179C (en) 2009-01-07
DE102006000018A1 (en) 2006-09-14
US20060196575A1 (en) 2006-09-07
DE102006000018B4 (en) 2008-09-11

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