CN105209804B - Sealing device and the sealing structure including the sealing device - Google Patents
Sealing device and the sealing structure including the sealing device Download PDFInfo
- Publication number
- CN105209804B CN105209804B CN201480017886.9A CN201480017886A CN105209804B CN 105209804 B CN105209804 B CN 105209804B CN 201480017886 A CN201480017886 A CN 201480017886A CN 105209804 B CN105209804 B CN 105209804B
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- Prior art keywords
- mortise
- sealing
- tenon
- sealing device
- concave part
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Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
- F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Abstract
The present invention relates to a kind of sealing device (20) for sealing between axle (12) and the hole (130) of cap (13), including：Circumference rotating sealing member (21), is assembled in through around the axle in the hole of the cap；And adjustment face seal component (22), it is attached to the circumference rotating sealing member and is fixedly connected to the cap；Wherein described adjustment face seal component includes mortise (220) and the tenon (230) being engaged with each other in a sealing fashion, and the annular mortise concave part (221) of the mortise and the annular tenon protuberance (231) of the tenon are configured to relative to each other slide in a composition plane, to allow the sealing device to keep and the axle coaxial alignment.The invention further relates to a kind of sealing structure with the sealing device.
Description
Technical field
The present invention relates to a kind of sealing device, and fill more particularly to a kind of sealing for the case lid with through hole
Put, the through hole is arranged for the rotary shaft for waiting to be sealed, the case lid is for example used for sealing a housing, and for example, vehicle is sent out
The crankcase of motivation or engine body.
Background technology
The available engine protecgulum (crankcase end cap) of electromotor is generally by the material with bent axle box main body or engine body
Material identical material is made, or has identical thermal coefficient of expansion (CET) by with the material of bent axle box main body or engine body
Material make, it is total in the whole design operation temperature range for sealing the axis of the dynamic sealing element of bent axle to guarantee
It is and bent axle coaxial alignment, it is to avoid out-of-alignment risk between the axis of dynamic sealing element and the axis of bent axle, so as to
Minimize lateral load of the imparting caused due to thermal deformation on dynamic sealing element, so as to prevent leakage and it is possible forever
The infringement of property sealing long.For example, the engine front cover being made of plastics is with than sending out by made by metal (usual cast iron or aluminium alloy)
The speed expansion of the big several times of motivation body；The mismatch of the CET between plastics and engine body material will be caused, when away from song
When the direction on axle surface pulls up the diameter opposite side of dynamic sealing device, the part of sealing device is more difficult to towards crankshaft surface press.
Unbalanced load on sealing device causes the lateral load being mentioned above.It is applied to by engine front cover and is arranged in bent axle week
The lateral load on sealing device enclosed the abrasion of the sealing lip of the dynamic sealing element made to being provided for bent axle is accelerated and
May cause that what is accelerated to wear and tear and last seal failure.On the diameter opposite side of sealing device, dynamic sealing element it is close
The load reduced on envelope lip possibly even caused oily leakage before sealing lip physical abrasion, and this is mainly due to not enough sealing
What load was caused.In fact, bent axle box main body or engine body are usually made of metal.Therefore, in view of sealing device it is upper
Potential failure mode is stated, by the other materials in addition to metal or by having with the metal of bent axle box main body or engine body
Material (such as, light material, for example, plastics) the manufacture engine front cover of different CET is considered as actual always or can not
Carry out.
Fig. 6 shows and seals manufacturer by known to one --- Bruss companies production for solving center seal line
The modularity Seal Design of the misalignment issues between crankshaft axis, wherein the modularity Seal Design are that a kind of bolt is tight
Gu seal modules, including：Pedestal 100, which is made up of hard plastics；Flexible wavy S-shaped elastomer 200, which is wrapped by mould
To on the pedestal and including a dynamic sealing lip, the dynamic sealing lip is intended to serve as the dynamic of bent axle to system (over-mold)
Rotating seal；Flat elastic washer 300, its be disposed in the pedestal on the matching face of engine front cover, the pad
Circle is intended to seal the modularity sealing member relative to engine front cover, and wherein engine front cover must be equipped with clamping metal the moon spiral shell
Stricture of vagina is installed and through the assembling screw of the pedestal with receiving from outside.The female thread is necessarily designed in case spin-ended turn to allow
Tighten from outside assembling screw.For the hard plastics pedestal for preventing from causing due to the clamping load from bolt
100 compression creep deformation (thinning due to constant compressive load), is required for a metal to resist at each bolt position
Compression gasket, to guarantee the all-metal load path for bolt load.If conversely, plastics are subject to the bolt of a part to carry
Lotus, then will occur the deformation of creep, cause the torque at bolted joints to be lost.
In the modularity Seal Design, the elastomeric material in ' S ' type ripple is (usual in the operating temperature range of sealing
Use the scope from -40 DEG C to 150 DEG C in engine applications, for example) in will be subject to rigidity on changing.In center seal line and axle
The lateral load that misalignment between heart line will cause to be applied on the sealing member.Particularly in low-temperature operation, elastomer material
The rigidity of material becomes higher, and lateral load also becomes higher, causes the sealing wear of the acceleration at the lip.Therefore, the mould
It is to change sensitive to temperature that the subject matter of massing Seal Design is which.Designer is it is contemplated that by subtracting during low temperature
The rigidity of ripplet elastomer is reducing lateral load.During with relatively low rigidity, it is possible to over time, elastomer
Torsion creep can be caused relative to the torsional friction of bent axle.The mode that this can cause with clock spring reverses winding is similar
" rolling tightly (wind-up) " situation, this causes the long-term creep of ripple elastomer to deform.Additionally, select for waveform elastic body
Material must with for dynamic lip seals material it is identical.Because optimal between waveform elastic body and dynamic lip seals
Material property may be different, it is necessary to makes the satisfaction of waveform elastic body require to compromise with some performances of dynamic lip seals.Separately
Outward, the modularity Seal Design bolts assemblies are to engine front cover, and assembling process is considerably complicated and working strength is big
's.
From a kind of case lid for vehicle motor housing, the wherein case lid known to document WO2005/003604A1
Through hole with a bent axle for extending from enclosure interior, including a light-weight metal die casting reinforcement flange and one it is poly-
The sealing flange of compound material, it is convex that the reinforcement flange is removably coupled the sealing by hasp lock (snap lock)
Edge.Dynamic sealing element is fixed to the sealing flange at the inner circumferential side for facing bent axle, and static sealing element is being faced
The sealing flange is fixed at the outer circumferential sides of housing；A recess, static sealing are arranged in the outline of the sealing flange
Element is coordinated with shape by the recess and immovable mode is connected to sealing flange.Sealing flange can be by nonmetallic materials
Or light-weight metal (such as, polyesteramine, polyphenylene sulfide and polyphthalamide) is made.Therefore, in order to apply accordingly, can be with
The material for selecting case lid before the mounting and the manufacture of the individual part that can perform case lid independently of one another.However,
In case lid disclosed in document WO2005/003604A1, strengthening flange and sealing flange is matched somebody with somebody by power cooperation and/or shape
What conjunction and/or material fit connected.The difference of the thermal coefficient of expansion of the material of the different piece of case lid may still result in dynamic
Lateral load on potted component, so as to the sealing property for causing to reduce.
EP1055850A2 discloses a kind of black box (1), and which may be inserted into rotate against two structures of so-called cell type
Between part, wherein bushing (2) can be cooperated with packing ring (3) in a fluid tight manner, wherein the bushing is with fixation and fluid is close
The mode of envelope is assembled to first component in the component.Reinforcement (10) of the packing ring (3) including a substantially rigid, example
Such as it is made of metal, which can be assembled to second component in the component in a fluid tight manner；First containment member
(11) it is made up of elastomeric material, is provided with least one annular lip (3), is preferably loaded and with cunning by garter spring
The mode of flowing mode and slightly interference fit is cooperated with the sleeve type connection part (4) of bushing (2), the sleeve type connection part (4)
Axially mounted on the first lip (3) and with reinforcement (10) relevant sleeve type connection part (12) cooperates；Towards bushing (2)
The one side of reinforcement (10) is provided with base (22) on the opposite side of the first lip (31), and a substantially rigid ring (23) is with resistance
Plug mode is installed in the base, and the ring (23) is made up of oxidation-resistant material (for example, rustless steel) and substantially in bushing (2)
The front of the flange portion (5) for carrying in an integral manner extends；Second containment member (7) is made up of elastomeric material, be provided with to
A few annular lip (35), sealing surfaces (37) of the annular lip to slide and with the ring by made by oxidation-resistant material (23)
The mode of fluid-tight cooperates.Preferably, the second containment member (7) be provided with it is multiple with antioxidation ring (23) radial and axial
Annular lip that the mode of upper sealing cooperates (35,42), the annular lip (35, at least one of 42) by different and more firm
The material (for example, polyurethane) of property is made.
The invention is intended to overcome obstruction by the material from bent axle box main body or engine body material with different CTE
One or more in the above-mentioned design weakness of material manufacture engine front cover.
The content of the invention
It is an object of the present invention to provide a kind of sealing device of the sealing between axle and the hole of cap, the sealing device
Be able to ensure that, by eliminate or reduce sealing device, by by between bent axle main body or engine body and cap
Deformation that the difference of the coefficient of thermal expansion or cooling meat rate of different materials causes and the side loading that is applied on the axle, make attachment
Sealing device to cap is always aligned with the axle with coaxial manner, maintains the sealing property between the cap and the axle.By
In the sealing device of the present invention, the manufacture material and bent axle box main body or engine body for being no longer required for cap has same
CTE。
It is an object of the present invention to by it is a kind of for the sealing device that seals between axle and the hole of cap come what is realized, this is close
Seal apparatus include：One circumference rotating sealing member, is assembled in through around the axle in the hole；And an adjustment face seal structure
Part, is attached to the circumference rotating sealing member and is fixedly connected to the cap；The wherein adjustment face seal component bag
Include the mortise and a tenon being engaged with each other in a sealing fashion, and the annular mortise concave part of the mortise and the tenon
Annular tenon protuberance can relative to each other slide in a composition plane, to allow the sealing device to keep and the axle
Coaxial alignment.
Preferably, mortise concave part is by with narrow made by medium-hard material (such as, fluoroelastomer (FKM))
Slot form.Preferably, the material for the mortise concave part has the Shore A durometer hardness of 60-90.By made by FKM
Mortise concave part is designed to be substantially reduced by rubbing that moving relative to slip between mortise concave part and tenon protuberance generates
Wipe.
Preferably, tenon protuberance is provided with an annular ridge, and the tip of the annular ridge abuts against mortise concave part
One medial wall, forms seal bead (seal-bead), is applied between tenon protuberance and mortise concave part to increase
Contact convex tendon load, and to guarantee to adjust the sealing property of face seal component.
Preferably, mortise includes a support member, and the support member is by an outside plate and an inner side for being pressed into the outside plate
On inner panel formed.The support member is configured to support mortise concave part in compression.By the amount for developing test optimization compression,
The oil leakage through mortise and mortise joint place is prevented to provide enough seal bead load, while allowing tenon protuberance
Slided relative to mortise concave part with low friction.
Preferably, formed for receiving the pit of the controlling depth well of mortise concave part, example by outside plate and inner panel
Such as, when the match surface of two plates is pressed together in the way of being in close contact.The invention is intended to the pit at the inner panel
Depth carries out manufacture control so that can realize the compression of the optimization at mortise as described above and mortise joint place.
In a preferred embodiment, mortise concave part is arranged to, in the mortise concave part in the face of outside plate and interior
At every side of the both sides of plate, with two rings into ridged being spaced at two concentric diameters.When tenon protuberance is in tenon
When sliding in eye concave part, the ring into ridged is received and is transmitted by the seal bead of tenon protuberance (for example, by punching press shape
Into) clamping force of applying.As two at mortise concave part the same side are into annular space certain between the ring of ridged,
One annular " leaf spring " of the picture that section of the mortise concave part in the annular space region is showed in the case, its protrusions
The fulcrum for serving as the leaf spring of the concentric ring into ridged, to avoid the extruding by tenon protuberance so that project tenon
Height and tenon protuberance of the friction law between portion and mortise concave part with regard to the concentric raised ring on mortise concave part
On seal bead height manufacturing tolerance it is insensitive.Total effect be to provide the height to the concentric ring on mortise concave part and
The more consistent seal bead load of the manufacture change with robustness of the height of the seal bead on tenon protuberance and friction
Load.
In order to ensure sealing, it is preferable that apply room temperature vulcanization (RTV) silicon between the inner plate and the outer plate during compression assembling
Rubber sealant.The RTV sealants play a part of to comply with adhesive, with prevent outside plate when external force is subjected to from inner panel separate and
The change of the flatness between compensation inner panel and the match surface of outside plate.
Preferably, the periphery at the inside bottom edge and tenon protuberance of mortise concave part is provided with corresponding position
Matching plane, to prevent rotating against between mortise concave part and tenon protuberance.
In one embodiment, tenon is that an annular component being assemblied in around rotating sealing member and tenon are dashed forward
It is on the neighboring of tenon to go out portion；Mortise is an annular component for being fixedly attached to cap and mortise concave part is in institute
State on the inner rim of mortise.Preferably, mortise is integral with cap by being insert molded technique, or less preferably passes through glue
Stick and be adhered to cap.
Preferably, rotating sealing member is hydrogenated nitrile-butadiene rubber (HNBR) lips shaft seal, it is therefore preferred to have metal elastic
Spring is excited.
Preferably, tenon protuberance is made up of double side zinc coating steel, to provide corrosion protection as tenon.
In a word, present invention also offers a kind of sealing structure, the sealing structure includes：Cap with a hole；Install
An axle in the hole, wherein above-mentioned sealing device is disposed in the hole and is mounted on the axle.
The cap can be motor body lid and the axle can be engine crankshaft.The present invention intentionally utilize by send out
The vibration of the bent axle that motivation spark rate is caused providing the weak impact load perpendicular to crankshaft center line so that tenon protuberance
Relative to mortise concave part reduce sealing lip on lateral load direction on small stride crawl；So as to by making tenon
Protuberance slides prevents the foundation of notable lateral load, thus maintains and crankshaft center line coaxial alignment.
Preferably, cap can be made up of the material identical or different with engine body.In order to reduce weight and save
Save manufacturing cost, it is preferable that cap is made up of plastic material.
Due to the sealing device of the present invention, or even the sealing device can caused (all with the external factor of axle misalignment
Such as, thermal deformation) in the case of, motor body lid (for example, engine front cover) be no longer restricted to by with engine body phase
Same material is made, and can be using the material different from engine body.When the sealing being applied on axle is laterally carried
During lotus, for example, it is as engine front cover is reinstalled during safeguarding without using factory aligned fixing device, of the invention
Sealing device can also pass through relatively flat in-migration between mortise concave part and tenon protuberance and eliminate lateral load.
Description of the drawings
In below, sealing device of the invention will be explained in greater detail with reference to drawing, drawing schematically shows
Below：
Fig. 1 is the cross-sectional schematic view of engine pack, and wherein case lid is equipped with sealing device of the invention；
The peace that Fig. 2 shows sealing device of the invention around engine crankshaft and in the hole of case lid
The longitudinal sectional view of dress state；
Fig. 3 shows the vertical of the engagement state of the mortise concave part and tenon protuberance of sealing device of the invention
To section view；
Fig. 4 is the amplification of the engaging zones C between the mortise concave part and tenon protuberance of the sealing device illustrated in Fig. 3
View；
Fig. 5 is that the tenon of the sealing device of the invention obtained along the direction for such as being indicated by the arrow Y in Fig. 4 is dashed forward
Go out the view in portion；And
Fig. 6 is the diagrammatic cross-sectional view of the modularity Seal Design of prior art.
Specific embodiment
Fig. 1 shows a kind of engine pack 1 for vehicle (for example, automobile), including engine body 10, is starting
Cylinder 11 in machine body, and the bent axle 12 of piston in cylinder is linked to by piston rod.In embodiment as shown
In, bent axle 12 passes through the motor body lid 13 (for example, engine front cover) of engine body 10 via through hole 130.Through hole 130
Play a part of to make bent axle 12 extend out from engine body 10.In through hole 130, sealing device 20 is arranged at case lid 13
Guaranteeing in bent axial oil seal and bent axle 12 between.Case lid 13 is installed by known device for screwing up (such as, bolt)
The chamber of bent axle and cylinder is accommodated on engine body with closing wherein.
Referring particularly to Fig. 2, sealing device 20 includes dynamic sealing component 21 (circumference rotating sealing member) and adjustment face
Containment member 22 (quasistatic face seals), the dynamic sealing component are assembled in around bent axle 12, the adjustment face seal structure
Part 22 is coaxially assemblied in around dynamic sealing component 21 and is fixedly connected to case lid 13.The dynamic sealing component
Can be any kind of commercially available dynamic sealing component, such as, with the HNBR lips sealings that metal spring is excited
Part.According to the present invention, adjustment face seal component 22 includes that mortise 220 and tenon 230, mortise 220 and tenon 230 can be to seal
Mode be engaged with each other.Mortise 220 and tenon 230 generally circularize shape and respectively by mortise concave part 221 and tenon
Protuberance 231 is formed, and mortise concave part 221 and tenon protuberance 231 are configured to the plane remained engaged with mortise and tenon
Relative to each other may move in (that is, vertical with crankshaft center line in this embodiment plane).
In an embodiment shown in figure 2, mortise 220 includes supporting ring portion 222, and the support ring portion is by regularly
It is connected to the inner circumferential edge of the case lid 13 of limited hole 130.Ring portion 222 is supported to be configured to support the mortise of mortise 220
Concave part 221.As shown in Figure 2, mortise concave part 221 is arranged in the inner rim of the support ring portion.Mortise concave part
221 by making with low friction and medium-hard elastomeric material.Preferably, the mortise concave part is by Xiao with 60-90
The FKM of family name's A durometer hardnesses makes.
Advantageously, ring portion 222 is supported to be configured with double-decker by inner ring plate B is pressed on outer ring plate A
And during pressing process, by by inner ring plate B local pressing/punching press towards outer ring plate A come formed one be used for receive tenon
The endless belt-shaped pit of eye concave part.The depth (critical product characteristic) of the pit is controlled by processing the profile of inner ring plate B
System.Before depression, a kind of room temperature vulcanization (RTV) silicone rubber sealant is applied between inner ring plate B and outer ring plate A, in case
Oily leakage path is formed therebetween due to the profile (for example, flatness or circularity) of mismatch only.In addition, the RTV sealants can
To be used as complying with adhesive to prevent inner ring plate B from separating with outer ring plate A due to the vibration from electromotor.Therefore, RTV is close
The applying of envelope agent can at utmost mitigate the control of product requirement for inner ring plate B and outer ring plate A.Alternatively, it is a kind of gluing
Agent additionally can be applied between inner ring plate B and outer ring plate A to improve bonding strength therebetween.Preferably, inner ring plate B and
Outer ring plate A is made up of metal (such as, steel).
Those skilled in the art are readily apparent that, support what ring portion 222 was formed by inner ring plate B and outer ring plate A in being not limited to Fig. 2
Double-decker；Such as, the support ring portion can be cast into monolayer ring element by metal material.In the shown embodiment, prop up
Pushing out ring portion 222 can pass through conventional coupling arrangement (such as, adhesive) and be connected to case lid.In a preferred embodiment party
In case, the edge of the neighboring of ring portion 222 is supported to be inserted into by being insert molded technique in motor body lid 13, with reality
Firm connection between ring portion and motor body lid is supported now, so that the RTV sealants between inner ring plate B and outer ring plate A
Or adhesive requires it is that non-essential and potential leakage path is eliminated.With regard to being insert molded technique, plastics can be selected
Material (such as, polyesteramine material) is manufacturing case lid.Typically, since polyesteramine material is golden with about 300 degree of fusing point
Category (such as, steel) with much larger than 300 degree of fusing point, will not be insert molded in support for the selection of the material of case lid
Have problems in terms of the temperature of technique.It is insert molded technique to force the selection of the material for inner ring plate B and outer ring plate A
It is too many to limit.
With reference to Fig. 3 and Fig. 4, the 221 (FKM of mortise concave part being contained in the pit formed by inner ring plate B and outer ring plate A
Block) it is raised with four in four corners.Because mortise concave part 221 is configured to a disc-shaped component, four for illustrating
Projection actually represents four ring 221a, 221b, 221c, 221d into ridged, and two of which exists into ring 221a, 221b of ridged
Mortise concave part 221 is spaced in the face of the side of inner ring plate B and at concentric diameter, and another two is into the ring of ridged
221c, 221d are mortise concave part 221 is in the face of the opposite side of outer ring plate A and is equally spaced at concentric diameter.Institute
State four rings into ridged effectively to provide four seal beads to prevent oil from mortise concave part 221 and inner ring plate B or outer shroud
Gap between plate A leaks out.As shown in Figure 3, the mortise concave part 221 of generally dish type is along its whole inner circumferential
The form of the slit that edge lengths are opened towards inner circumferential side.The slit defines one for engaging with tenon protuberance 231
Annular chamber.
With reference to Fig. 2, tenon 230 includes cannula portion 232 and tenon protuberance 231, and the cannula portion is in close-fitting mode
Coaxially it is assemblied in around dynamic sealing component 21, the tenon protuberance is in radial directions along the neighboring of cannula portion 232
Stretch out.The substantially sleeve shaped of cannula portion 232.Preferably, cannula portion 232 and tenon protuberance 231 are by teemer
Skill is by metal material (for example, steel) global formation.When sealing device 20 operationally, the side (left side in Fig. 2 of tenon 230
Side) it is exposed to surrounding and contrary side (that is, the right side in Fig. 2) is exposed to oil.In order to further prevent tenon 230
It is corroded, it is preferable that the tenon is made up of bilateral galvanized steel.
When sealing device 20 is assembled well, the tenon protuberance 231 of tenon 230 is inserted into mortise concave part
In 221 (slits of FKM blocks), and in the neighboring of tenon protuberance 231 and the inside bottom of the slit of mortise concave part 221
There is gap between edge, so that tenon protuberance 231 can be may move in the slit of mortise concave part 221.In bent axle
12 rotation during, mortise 220 is moved with the deformation of the case lid 13 caused by thermal expansion, and while, tenon 230 with
The deformation of the bent axle 12 caused by thermal expansion and move (in the case where electromotor is heated or is cooled, in 15 minutes
Dynamic sealing component is of about 0.5mm perpendicular to total movement of the axis of bent axle).Due to the material and electromotor machine of case lid 13
The difference of the thermal coefficient of expansion between body or the material of bent axle, therefore its movement is different, inevitably leads to mortise 220
And the relative movement between tenon 230.When bent axle is generally horizontally placed and motor body lid is essentially perpendicular to song
When the axis of axle is placed, because gravity, the relative movement between the mortise 220 caused by thermal expansion and tenon 230 is generally sent out
Life is in the plane of crankshaft center line.If motor body lid is made of plastics and engine body or bent axle are by steel
Into because plastics are with the thermal coefficient of expansion bigger than steel, the movement of the case lid caused by thermal expansion is (such as by Fig. 1
Arrow X shown in) lateral load that will cause to be imparted on bent axle downwards.Adjustment face seal component 22 is (as positioned at housing
Power transmission component between lid and bent axle) performed by the engagement that is slidingly sealed between tenon protuberance and mortise concave part
Shift compensation, to eliminate the lateral load on the dynamic sealing component 21 caused by the different displacements of case lid and bent axle.Holding
During the time period of row shift compensation, there is relative movement between tenon protuberance and mortise concave part so that in mortise and
Relatively translatable mortise-mortise joint connection is formed between tenon.
In one embodiment, annular ridge 2310 is provided with the side of tenon protuberance 231, the annular ridge is example
Such as by pressing or being embossed in what is formed on flat tenon protuberance.The tip of the annular ridge 2310 of tenon protuberance 231 is adjacent
Connect the inwall against mortise concave part 221.The annular ridge 2310 being arranged on tenon protuberance 231 is used for locally increasing neighbour
The seal load (N/mm) of the inwall against mortise concave part is connect, so as to the slit for maintaining mortise concave part 221 is flat pattern.
Therefore, annular ridge 2310 is also referred to as seal bead.
In response to the effect of the annular ridge 2310 of tenon protuberance 231, at the phase homonymy of the side wall of mortise concave part 221
Two serve as one " leaf spring " into the part between the ring of ridged so that the annular ridge 2310 and tenon of tenon protuberance 231
Friction between the medial wall of eye concave part 221 can be significantly reduced.Preferably, mortise concave part is by with low friction
Elastomeric material (such as, FKM) is made, so that tenon protuberance will not relative to the slip of the medial wall of mortise concave part
It is subjected to big frictional resistance.In above-mentioned mortise-mortise joint connection, due to the annular ridge 2310 of tenon protuberance 231 it is relative
Slide in the medial wall of mortise concave part 221, by between the part into ridged of the phase homonymy of the side wall of mortise concave part
The bending rigidity that provides of part (as leaf spring) friction relative to annular ridge 2310 can be reduced.The ring slided in slit
Shape ridge 2310 can be vivo compared to one and is compressed on the rabbit run below the blanket of the side.
Therefore, the combination that " leaf spring " design of mortise concave part and " sealing ring " of tenon protuberance are designed may insure tenon
Low friction between eye concave part 221 and annular ridge 2310 and sealing enough on annular ridge is applied to by mortise concave part carries
Lotus so that the mortise-mortise joint connection of adjustment face seal component 22 can be advantageously carried out self-adjusting (mortise and tenon it
Between little relative movement be used to compensate the little shifting of the dynamic sealing component 21 that caused by thermal deformation relative to crankshaft center line
It is dynamic) and sealing property, and it is further minimized or eliminates the lateral load that is applied on axle.
Determined by the depth for receiving the pit of mortise concave part 221 that inner ring plate B and outer ring plate A are limited and be applied to
Clamping force on mortise concave part." leaf spring " design of mortise concave part 221 make by four rings into ridged from inner ring plate B and
Outer ring plate A is applied to the clamping force on mortise concave part 221 to be affected between mortise concave part 221 and tenon protuberance 231
It is less direct during friction.This means pit depth can in the wider scope change and directly and not significantly
Affect the friction between mortise concave part 221 and tenon protuberance 231 and seal load.Therefore, for inner ring plate B and outer ring plate
The design control parameter of A is less sensitive for the manufacturing tolerance in manufacture process.
In the run duration of electromotor of sealing device of the invention is installed, desirably, sealing device is expected
No one of 20 mortise 220, tenon 230 and dynamic sealing component 21 are rotated relative to cylinder block.However, in practice,
Rotating against between tenon protuberance 231 and mortise concave part 221 may generation.In a preferred embodiment, may be used
To cut off a part from the neighboring of tenon protuberance 231 to allow the neighboring that there is at least one plane 233；Therefore, exist
The corresponding position at the inner bottom part edge of the slit of mortise concave part 221 there is also a corresponding planar design；Because tenon
The neighboring of protuberance 231 and the inner bottom part edge of mortise concave part 221 have non-rotationally-symmetric matched shape, it is possible to
Avoid rotating against between tenon protuberance 231 and mortise concave part 221.The plane can be arranged on tenon protuberance
Or mortise concave part periphery one or more Angle Positions (for example, the Angle Position in 3-6-9-12 faces) on.This area skill
Art personnel to be contemplated that and arrange any other anti-rotational device on tenon ledge and mortise concave part for preventing respectively
Only rotating against therebetween, such as, keyed engagement structure, or, the inner bottom part of the neighboring of tenon protuberance and mortise concave part
Edge is designed to non-rotational symmetric shape, such as, rectangle, triangle etc..
Although in the adjustment face seal component of the sealing device illustrated in Fig. 1-Fig. 3, mortise on the neighboring of tenon,
But based on described embodiment, those skilled in the art are easily envisaged that another kind of variant, and wherein tenon is filled
Fit over around mortise, and the tenon protuberance of tenon is directed inwardly toward in radial direction, while the mortise concave part of mortise is in footpath
Outwardly open to direction.
According to the present invention, although engine body and motor body lid are by the different materials with different heat expansion coefficient
Make, but by the adjust automatically of the adjustment face seal component on dynamic sealing component, the axis of sealing device is total
It is to maintain and is aligned with the axis of engine crankshaft with coaxial manner.Therefore, the invention enables the material different from engine body
Manufacture motor body lid is possibly realized.For example, motor body lid can replace aluminum to make by plastics.By this replacement, send out
The weight of motivation case lid can be reduced at least 66%.
In addition, sealing device of the invention 20 can be produced in modular fashion；For example, adjust face seal structure
Part can be designed as a kind of modular part, the modular part to be sized to matching existing commercially available
Dynamic sealing component.Therefore, research and develop risk can be greatly reduced and therefore produce and instrument cost can be subtracted
It is few.
In addition, for the class of the electromotor with the low-function demand to being intended to the motor body lid for benefiting from the present invention
Type, if using the present invention sealing device, protecgulum to engine body front end face be accurately positioned control will no longer be must
Need.Feature necessary to deletion is accurately positioned control provides the advantage that the cost better than prior art of the invention is reduced.
Although the sealing device in Fig. 1 20 is illustrated the electromotor to be installed between bent axle and motor body lid
In the through hole of case lid, but those skilled in the art are readily apparent that, sealing device 20 is applied to axle and with the hole for axle
Cap between any other sealing engagement, and the sealing being not limited between engine shaft and motor body lid.For example,
The sealing device of the present invention can be applied to the machine or equipment (such as, water pump, oil pump etc.) for needing sealing.This area skill
Art personnel can select suitable material to manufacture sealing device according to concrete application environment, to ensure to transport in machine or equipment
Coaxial alignment between the departure date between sealing device and axle.
Described above is only the preferred embodiments of the invention, and is not intended to limit the present invention.For this area skill
Art personnel, without departing from the scope of the present invention, can make various remodeling and variant.Those skilled in the art are based on
Consideration to this disclosure can obtain other embodiments.This specification and embodiment be regarded only as it is exemplary,
And the real protection domain of the present invention is limited by the technical solution of appended claims and equivalent.
Claims (19)
1. it is a kind of to be used for axle (12) and be provided for the sealing device seal between the hole (130) of the cap (13) of the axle (12)
(20), including：
One circumference rotating sealing member (21), is assembled in the axle (12) week in the hole (130) through the cap (13)
Enclose；And
One adjustment face seal component (22), is attached to the circumference rotating sealing member (21) and is fixedly connected to
The cap (13)；
Wherein described adjustment face seal component (22) is including the mortise (220) and a tenon being engaged with each other in a sealing fashion
(230), and the mortise (220) annular mortise concave part (221) and the annular tenon protuberance of the tenon (230)
(231) it is configured to relative to each other slide in a composition plane, to allow the sealing device (20) to keep
With the axle (12) coaxial alignment；
Wherein described mortise concave part is the form of the slit opened towards inner circumferential side along its whole inner circumferential edge lengths.
2. sealing device (20) according to claim 1, it is characterised in that the mortise concave part (221) is by having
The form of slit made by the material of the Shore A durometer hardness of 60-90.
3. sealing device (20) according to claim 1 and 2, it is characterised in that the tenon protuberance (231) is provided with
One annular ridge (2310), the tip of the annular ridge abut against the medial wall of the mortise groove.
4. sealing device (20) according to claim 1 and 2, it is characterised in that the mortise (220) is used for including
The support member of the mortise concave part (221), the support member is supported to be pressed against the outside plate by an outside plate and one
Inner panel on inner side is formed.
5. sealing device (20) according to claim 4, it is characterised in that is used to receive the mortise concave part
(221) recess is formed by the outside plate and the inner panel.
6. sealing device (20) according to claim 5, it is characterised in that the mortise concave part (221) is arranged to,
At every side of the both sides in the face of the outside plate and the inner panel of the mortise concave part (221), with concentric at two
Two rings (221a, 221b, 221c, 221d) into ridged being spaced at diameter.
7. sealing device (20) according to claim 5 or 6, it is characterised in that a kind of sealant is applied in described outer
Between plate and the inner panel.
8. sealing device (20) according to claim 1 and 2, it is characterised in that the inner side of the mortise concave part (221)
The periphery of bottom margin and the tenon protuberance (231) is provided with matching plane (233) at corresponding position, to prevent
Rotating against between the mortise concave part (221) and the tenon protuberance (231).
9. sealing device (20) according to claim 1 and 2, it is characterised in that the tenon (230) is and is assemblied in
Annular component and the tenon protuberance (231) around the circumference rotating sealing member (21) is in the outer of the tenon
On periphery；The mortise (220) is an annular component for being fixedly attached to the cap (13) and the mortise concave part
(221) it is on the inner rim of the mortise (220).
10. sealing device (20) according to claim 9, it is characterised in that the mortise (220) is by being insert molded work
Skill is integral with the cap (13) or the cap (13) is adhered to by adhesive.
11. sealing devices (20) according to claim 1 and 2, it is characterised in that the rotating sealing member (21) is hydrogen
Change nitrile rubber lips shaft seal.
12. sealing devices (20) according to claim 1 and 2, it is characterised in that the tenon protuberance (231) is by double
Side galvanized steel is made.
13. sealing devices (20) according to claim 2, it is characterised in that the material is fluoroelastomer.
14. sealing devices (20) according to claim 7, it is characterised in that the sealant is that RTV silicone rubber liquid is close
Envelope agent.
15. sealing devices (20) according to claim 11, it is characterised in that the rotating sealing member has metal elastic
Spring is excited.
A kind of 16. sealing structures, including：One cap (13), which has a hole (130)；One axle (12), which is installed in
In the hole (130)；And a sealing device, which is mounted on the axle (12) and is disposed in the hole (130)
Inside；The sealing device is the sealing device (20) according to any one of claim 1-15.
17. sealing structures according to claim 16, it is characterised in that the cap (13) be motor body lid and
The axle (12) is engine crankshaft.
18. sealing structures according to claim 17, it is characterised in that the cap (13) by with the engine body
(10) identical or different material is made.
19. sealing structures according to claim 18, it is characterised in that the cap (13) is made of plastics.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013073204 | 2013-03-26 | ||
| CNPCT/CN2013/073204 | 2013-03-26 | ||
| PCT/EP2014/055614 WO2014154562A1 (en) | 2013-03-26 | 2014-03-20 | Sealing means and sealing structure comprising the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105209804A CN105209804A (en) | 2015-12-30 |
| CN105209804B true CN105209804B (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480017886.9A Active CN105209804B (en) | 2013-03-26 | 2014-03-20 | Sealing device and the sealing structure including the sealing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105209804B (en) |
| WO (1) | WO2014154562A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307077B (en) * | 2017-07-27 | 2022-11-29 | 舍弗勒技术股份两合公司 | Seal assembly |
| US10527173B2 (en) * | 2017-08-15 | 2020-01-07 | Aktiebolaget Skf | Resilient shaft seal |
| CN113405897B (en) * | 2021-06-30 | 2022-09-30 | 中国航发贵州黎阳航空动力有限公司 | Piston rod strength and sealing test fixture |
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| US6155226A (en) * | 1997-03-28 | 2000-12-05 | Isuzu Motors Limited | Engine |
| US6471211B1 (en) * | 2000-08-28 | 2002-10-29 | Brenco, Incorporated | Seal assembly |
| CN1487225A (en) * | 2002-06-26 | 2004-04-07 | 卡尔弗罗伊登柏格两合公司 | Axial shaft sealing device |
| CN1594845A (en) * | 2003-09-11 | 2005-03-16 | Snecma发动机公司 | Provision of sealing for the cabin-air bleed cavity using a segment seal |
| CN1768225A (en) * | 2003-07-04 | 2006-05-03 | 卡尔弗罗伊登柏格两合公司 | Sealing housing cover |
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| CN101688611A (en) * | 2008-04-08 | 2010-03-31 | Nok株式会社 | Sealing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2298008A (en) * | 1995-02-16 | 1996-08-21 | Ford Motor Co | A shaft seal arrangement |
| ITMI991135A1 (en) * | 1999-05-24 | 2000-11-24 | Rolf S P A | BOX-TYPE SEALING COMPLEX IN PARTICULAR FOR VEHICLE AXLES |
| KR101265527B1 (en) * | 2010-04-07 | 2013-05-20 | 가부시키가이샤 고마쓰 세이사쿠쇼 | Track roller device |
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|---|---|---|---|---|
| CN1177071A (en) * | 1996-06-20 | 1998-03-25 | 卡尔·弗罗伊登伯格公司 | Sealing device for annular gap between casing and machine shaft |
| US6155226A (en) * | 1997-03-28 | 2000-12-05 | Isuzu Motors Limited | Engine |
| US7658386B2 (en) * | 1997-09-25 | 2010-02-09 | Freudenberg-Nok General Partnership | Retrofittable severe duty seal for a shaft |
| US6471211B1 (en) * | 2000-08-28 | 2002-10-29 | Brenco, Incorporated | Seal assembly |
| CN1487225A (en) * | 2002-06-26 | 2004-04-07 | 卡尔弗罗伊登柏格两合公司 | Axial shaft sealing device |
| CN1768225A (en) * | 2003-07-04 | 2006-05-03 | 卡尔弗罗伊登柏格两合公司 | Sealing housing cover |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105209804A (en) | 2015-12-30 |
| WO2014154562A1 (en) | 2014-10-02 |
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