EP2557298B1 - Dispositif à clapets doté d'au moins deux clapets spécialement fabriqués et montés ensemble pour un mouvement simultané - Google Patents
Dispositif à clapets doté d'au moins deux clapets spécialement fabriqués et montés ensemble pour un mouvement simultané Download PDFInfo
- Publication number
- EP2557298B1 EP2557298B1 EP11177435.2A EP11177435A EP2557298B1 EP 2557298 B1 EP2557298 B1 EP 2557298B1 EP 11177435 A EP11177435 A EP 11177435A EP 2557298 B1 EP2557298 B1 EP 2557298B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flap
- valve
- housing
- geometry
- flaps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008878 coupling Effects 0.000 claims description 48
- 238000010168 coupling process Methods 0.000 claims description 48
- 238000005859 coupling reaction Methods 0.000 claims description 48
- 230000000295 complement effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 description 11
- 238000005266 casting Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000153 supplemental effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
- F02D9/1095—Rotating on a common axis, e.g. having a common shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
Definitions
- the present invention relates to a flap device according to the preamble of claim 1.
- the aforesaid flapper device which may comprise a plurality of flaps, and typically one flapper portion, is preferably adapted for use in motor vehicles for controlling gas flows of all types, such as fresh gas supply to the internal combustion engine, by relative displacement of the at least two flaps relative to Change housing. It is also known, components of such a flap device, such as the flaps on the one hand and the housing on the other hand, inexpensive injection molding manufacture.
- a disadvantage of the production by injection molding of a plurality of mutually connected common movement flaps is a certain deformation, which can occur after demolding of a flap assembly with Pinreren, at least two, flaps from an injection mold.
- the flaps are usually arranged in the axial direction one behind the other, whereby the flap assembly in the axial direction may have a large length. Since the deformation occurring due to thermal distortion and possibly occurring distortions after demoulding from the injection mold usually increases with increasing dimension in a spatial direction, straight flap arrangements with at least two or more flaps are subject to the described geometric change after demoulding to a particularly undesirable extent.
- a flap device of the generic type is in the document WO 2006/024468 A1 disclosed. Another flap device is from the document WO 93/01402 A1 known.
- the object of the present invention is to provide a valve device which is easy to manufacture and to assemble.
- this object is achieved by a flap device according to claim 1.
- the housing may also consist of several housing parts, about one housing part per flap. However, it is also conceivable to combine several or even all of the flow channel sections substantially in a common housing part and to supplement this merely by further mounting parts in order to enable a relatively movable attachment of the flaps to the housing part.
- the at least two flaps on the finished flap device are rotatable about a flap axis relative to the housing, the flap having a flap body and at least one flap shaft portion connected thereto for common movement.
- the flap body is that portion of the flap, with which the above-described change in the flow cross-section is effected by changing the relative arrangement and which is designed for this purpose.
- the flap shaft sections which are formed integrally with the flap body for reasons of dimensional accuracy and dimensional stability and to avoid unwanted assembly work, are adapted to receive the flap with the flap body rotatably mounted on the housing.
- a particularly stable mounting of the flap for relative rotation relative to the housing is inventively obtained in that the flap has two with respect to the flap axis substantially collinear flap shaft sections, wherein the flap body is provided axially between the flap shaft sections. Due to the arrangement of the valve body axially between the valve shaft sections also resulting from operational possibly occurring loads flap bend can be avoided or at least significantly reduced, which could otherwise affect the relative twistability of the flap relative to the housing.
- the flap device or a semifinished product made for its manufacture may have more than two flaps, such as when several similar flow channels lead to each cylinder of a multi-cylinder internal combustion engine and the gas flow rate in each of the flow channels is to be variable.
- a structurally simple and the following assembly work considerably simplifying solution may be such that one of two connected to a valve body flap shaft portion, preferably at a free axial end thereof, has a coupling geometry and that the respective other flap shaft portion has a coupling counter-geometry, wherein the coupling geometry and the coupling counter-geometry can be positively coupled to a common rotational movement about the valve axis.
- each flap preferably has at one end a coupling geometry and at the other a coupling counter-geometry, so that only one type of flap needs to be manufactured and this flap can be axially lined up as often as required by coupling geometry and coupling counter-geometry so as to provide the desired number of flaps of the respective flap assembly reach.
- the coupling geometry and / or the coupling counter-geometry is integral with the flap having it, preferably formed with the flap shaft portion having it.
- a safe and reliable torque transmission from a flap to each their axially adjacent which may be a prerequisite for joint movement, can be obtained in a simple manner that a geometry of coupling geometry and coupling counter geometry a recess and the other geometry is a torque transmitting in the recess insertable projection, preferably a projection complementary to at least a portion of the recess periphery.
- the projection for torque transmission, the projection, as well as the recess, have a cross-sectional shape when viewing a valve axis orthogonal cross-section, which is bounded by a polygon.
- the projection may be formed prismatic, wherein projection and recess may have insertion bevels for easy installation. This means that the projection tapers with increasing axial distance from the valve body, while the recess tapers with increasing approach to the valve body.
- the preferred complementary configuration of recess and projection should not mean that in the coupled state of recess and projection no voids in the coupling structure more, because usually the recess must always be performed axially a little longer than the projection. Rather, it should be stated that the majority of the recess is taken after the coupling of material of the projection.
- the flap device has an actuating component with which by an actuating device, such as an actuator, an actuating torque for relative rotation of flaps and housing in the flap device can be introduced, thus at a single actuating point the To operate flap assembly of the flap device.
- an actuating device such as an actuator
- the actuating component can already be connected to at least one flap of the flap device or still be connectable to this. Then it is for ease of assembly work, but also for the usability of a substantially "universal" flap, not only for coupling to another flap, but also for coupling to the operating member advantageous if the actuating member has a geometry of coupling geometry and coupling counter-geometry.
- a plurality of individually produced flaps in addition to the aforementioned positive locking geometries by material connection, such as by the low-distortion laser welding, or by gluing or otherwise operationally inextricably linked together to ensure operation of the flap device with the most accurate possible change in the gas flow flowing through the flow channel section gas flow to be able to.
- the flap axis is provided at a distance from the flap body, wherein the flap body is curved so that the flap body in a passage position in which the flow cross-section of the Strömungskanalabschnifts is maximum, abuts against the wall of the housing or snuggles against them at a short distance.
- a flap assembly of a flap device comprises a flap shaft member.
- the flap shaft component can be, for example, a metal component or a component made of another material which is more dimensionally stable than the cured casting material of the flap.
- the flap shaft member is not completely surrounded by casting material contributing to the formation of the flap, while in the case of overmolding the flap shaft component is completely surrounded by casting material contributing to the formation of the flap.
- the encapsulation is preferred because the encapsulated valve shaft component is largely protected by the casting material of the flap and also on the outer surface of the valve shaft member reinforced flap no unwanted material pairing occurs, which can lead to unwanted wear in relative movement of the flap and housing.
- a common spraying or encapsulation of two or more flaps on a common flap shaft component is not a form-fit geometry connection in the sense of the present application. Rather, the flaps of the flap device according to the invention must be present at the beginning of assembly of the flap arrangement in isolation.
- adjacent flaps are connected or connectable by an axial plug connection for common movement.
- the form fit geometries and the region of flap shaft sections adjoining them preferably have a surface made of a uniform material.
- the entire flap is made of this material.
- FIG. 1 to 3 An embodiment of the present invention is illustrated and generally designated 110.
- the flap device 110 shown here has four substantially parallel flow channel sections 126, 128, 130 and 133, which may be formed in a common housing 120.
- the housing 120 may be subdivided in such a way that one or more subgroups of flow channel sections are formed in a housing part. It can also be thought to form a separate housing for each flow channel section.
- the housing 120 may be designed in several parts to facilitate the assembly of the embodiment of a flap device 110 shown here.
- the flaps 132, 134, 136 and 137 are with correspondingly the shape of the associated flow channel portion curved flap bodies 132 a, 134 a, 136 a and 137 a, which are arranged at a distance from the flap axis K, around which the entire flap assembly 139 is rotatable relative to the housing 120.
- the valve bodies 132a, 134a, 136a and 137a closely abut the housing 120 to form a thin gap 141.
- valve bodies can then be in the in Fig. 1 shown passage position in which the respective flow channel sections in the housing 120 substantially have a maximum flow cross-section, create a conforming to the respective wall sections of the housing 120.
- the flap arrangement 139 preferably no flap component protrudes into the flow channel section assigned to it.
- flap device 110 The embodiment of a flap device 110 according to the invention discussed here will be described below with reference to FIGS Fig. 1 the leftmost flap 137 will be described. Insofar as flaps other than the described flap 137 differ from this, it will be possible to refer specifically to the differences within the scope of this description.
- the flap 137 comprises the already mentioned flap body 137a, from which project to both, with respect to the flap axis K, axial sides flap shaft portions 137b.
- the flap shaft portions 137b are formed integrally with the flap body 137a via land portions 137c.
- Both longitudinal ends of the flap shaft sections 137b, which are remote from the flap body 137a, have form fit geometries which can serve for the torque-transmitting connection with the respectively adjacent flap, here for example flap 136, or / and with an actuating component 162.
- both positive locking geometries can be formed as projections 164.
- the flaps 137 and 134 may be formed substantially identically, and the flaps 136 and 132 may be formed substantially identically, with the difference between adjacent flaps 137 and 136 (see FIGS Fig. 3 ) may consist in that the flap 136 instead of projections 164 coupling recesses 166 has.
- the flap 136 has recesses 166 at both longitudinal ends of the flap shaft sections 136b remote from the flap body 136a into which the projections 164 of adjacent flaps may be inserted in the axial direction to connect the flaps to transmit torque.
- each flap has a projection 164 at one longitudinal end of a flap shaft portion and a corresponding recess 166 at the respective other longitudinal end. If then, based on the position to the valve body, always the same flap shaft sections have a projection and the other have a recess, it is sufficient to produce a kind of flaps. Essentially identical flaps can thus be put together to form a flap arrangement 139.
- the components inserted for torque transmission are additionally permanently connected by gluing, welding or any other suitable method when used as intended.
- a laser welding method is recommended here, which is the occurring minimizes thermal distortion and thus the highest possible dimensional stability, combined with a smooth Relativvermosiana the flap assembly 139 relative to the housing 120, guaranteed.
- the coupling projections 164 are preferably constructed prismatic, so that they can transmit torque when combined with the corresponding coupling recesses 166 on the sides of their lateral surfaces.
- the coupling projections 164 are designed as a cuboid.
- flap projections 164 and flap recesses 166 are essentially complementary in the mounted state, ie complementary to each other, this does not mean that the coupling recess 166 is in one with a coupling projection 164 United state is completely filled by the coupling projection 164.
- the coupling recess 166 is formed axially longer for manufacturing reasons
- the flaps can be made individually and mounted with little effort to a flap assembly 139 of any length.
- the flap assembly 139 which in the Fig. 1 and 2 four flaps and an actuating member 162 may, in alternative embodiments, as in Fig. 3 shown, only two flaps 137 and 136 and an actuating member 162 or may have only three, five, six or more flaps, each with or without operating member 162nd
- the actuating component also has a corresponding form-fit geometry, in this case a coupling recess 166.
- each flap shaft section may be surrounded by a housing supplementing member 121 and 123, respectively.
- the housing supplemental components 121 and 123 may be substantially identical and differ only in terms of their direction of curvature.
- the housing supplemental components 121 and 123 may be mirror-inverted with respect to a game mirror symmetry plane orthogonal to the channel axis K.
- the flaps required to form a flap arrangement 139 can be combined with one another via the form-fit geometries described above, and preferably fixed in a non-detachable manner.
- an actuating member 162 which end to the flap assembly 139 may be connected to transmit torque.
- the thus formed flap assembly 139 in the housing base member 125 which in Fig. 1 is shown, are used, in which case the respective housing supplemental components 121 and 123 complement the housing base member 125 to a housing with complete flow channel sections.
- a bearing bush 152 can be provided between the housing extension components 121 and 123 and the flap shaft sections 137b, 136b, 134b, 132b passing through them.
- the flaps for example the flap 137
- the flaps may have been cast in a common casting step with the housing supplemental components 121 and 123 in a common mold, for example by injection molding.
- a set of bearing bushes 152 which after demolding the housing extension members 121 and 123 geometrically separated from the flap shaft portions 137b, etc., placed at corresponding locations in the mold and cast around casting material, in particular encapsulated.
- the supplemental components abut an outer surface 152a of the bushing 152, while the flap shaft portions 137b engage an inner surface 152b (see FIG Fig. 3 ) of the bushings 152 abut.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lift Valve (AREA)
- Valve Housings (AREA)
Claims (4)
- Dispositif à volet (110) pour l'utilisation dans des véhicules automobiles, le dispositif à volet achevé (110) comprenant un boîtier (120) qui entoure une section de conduit d'écoulement (126, 128, 130, 133) et comprenant en outre au moins deux volets (132, 134, 136, 137) reçus au boîtier (120) par rapport à celui-ci de manière rotative autour d'un axe de volet (K) de sorte que par un ajustement relatif des volets (132, 134, 136, 137) par rapport au boîtier (120) la section transversale d'écoulement efficace de la section de conduit d'écoulement (126, 128, 130, 133) peut être modifiée, où lesdits au moins deux volets (132, 134, 136, 137) comprennent respectivement deux sections d'arbre de volet (132b, 134b, 136b, 137b) essentiellement coaxiales par rapport à l'axe de volet (K) par lesquelles le volet (132, 134, 136, 137) respectif est logé de manière rotative au boîtier (120), et comprennent respectivement un corps de volet (132a, 134a, 136a, 137a) prévu axialement entre les sections d'arbre de volet (132b, 134b, 136b, 137b) et reçu pour modifier la section transversale d'écoulement dans la section de conduit d'écoulement (126, 128, 130, 133), où en outre l'axe de volet est prévu espacé au corps de volet, où le corps de volet est formé en courbe de sorte que dans une position de passage où la section transversale d'écoulement de la section de conduit d'écoulement est maximale, le corps de volet repose contre la paroi du boîtier ou épouse la paroi à faible distance,
caractérisé en ce que des volets (132, 134, 136, 137) adjacents sont produits de manière séparée et sont accouplés par une géométrie de complémentarité de forme (164, 166) pour un mouvement commun et sont en outre des géométries de complémentarité de forme (164, 166) prévues liés opérativement et de manière indissociable par une complémentarité de matériau, les deux sections d'arbre de volet (132b, 134b, 136b, 137b) étant formées en une pièce avec le corps de volet (132a, 134a, 136a, 137a) prévu axialement entre les sections. - Dispositif à volet selon la revendication 1,
caractérisé en ce qu'une parmi deux sections d'arbre de volet (132b, 134b, 136b, 137b) liée à un corps de volet (132a, 134a, 136a, 137a) comprend, de préférence à une section terminale libre de cette dernière, une géométrie d'accouplement (164 ou 166) et en ce que l'autre section d'arbre de volet (132b, 134b, 136b, 137b) respective comprend une contre-géométrie d'accouplement (166 ou 164), la géométrie d'accouplement (164 ou 166) et la contre-géométrie d'accouplement (166 ou 164) pouvant être couplées en complémentarité de forme pour un mouvement rotatif commun autour de l'axe de volet (K). - Dispositif à volet selon la revendication 2,
caractérisé en ce qu'une géométrie (166) parmi géométrie d'accouplement (164 ou 166) et contre-géométrie d'accouplement (166 ou 164) comprend une cavité (166) et l'autre géométrie respective (164) comprend une projection, de préférence complémentaire à au moins une section de la circonférence de la cavité, (164) qui peut être insérée dans la cavité (166) en transmettant une torque. - Dispositif à volet selon une des revendications 2 ou 3,
caractérisé en ce que le dispositif de volet (110) comprend un module d'actuation (162) qui peut être lié ou qui est lié à au moins un volet (132, 134, 136, 137) pour initier un moment d'actuation pour un mouvement rotatif relatif des volets (132, 134, 136, 137) et du boîtier (120), le module d'actuation (162) comprenant aussi une géométrie parmi géométrie d'accouplement (164 ou 166) et contre-géométrie d'accouplement (166 ou 164).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11177435.2A EP2557298B1 (fr) | 2011-08-12 | 2011-08-12 | Dispositif à clapets doté d'au moins deux clapets spécialement fabriqués et montés ensemble pour un mouvement simultané |
CN201210283294.4A CN103061896B (zh) | 2011-08-12 | 2012-08-09 | 具有至少两个分开制造的和为了共同运动而相互装配在一起的节气门的节气门装置 |
US13/584,051 US8739761B2 (en) | 2011-08-12 | 2012-08-13 | Valve device with at least two separately produced valves assembled together for joint movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11177435.2A EP2557298B1 (fr) | 2011-08-12 | 2011-08-12 | Dispositif à clapets doté d'au moins deux clapets spécialement fabriqués et montés ensemble pour un mouvement simultané |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2557298A1 EP2557298A1 (fr) | 2013-02-13 |
EP2557298B1 true EP2557298B1 (fr) | 2017-11-22 |
Family
ID=44763807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11177435.2A Active EP2557298B1 (fr) | 2011-08-12 | 2011-08-12 | Dispositif à clapets doté d'au moins deux clapets spécialement fabriqués et montés ensemble pour un mouvement simultané |
Country Status (3)
Country | Link |
---|---|
US (1) | US8739761B2 (fr) |
EP (1) | EP2557298B1 (fr) |
CN (1) | CN103061896B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016203517A1 (de) * | 2016-03-03 | 2017-09-07 | Mahle International Gmbh | Frischluftzuführungseinrichtung für eine Brennkraftmaschine eines Kraftfahrzeugs |
JP2017227191A (ja) * | 2016-06-23 | 2017-12-28 | アイシン精機株式会社 | 気流制御弁構造 |
JP6776715B2 (ja) * | 2016-08-09 | 2020-10-28 | アイシン精機株式会社 | 内燃機関の吸気装置 |
USD858579S1 (en) * | 2018-03-29 | 2019-09-03 | Wen Chen | Air flap |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897524A (en) * | 1974-01-04 | 1975-07-29 | Ford Motor Co | Carburetor secondary throttle shaft construction |
BR9206229A (pt) * | 1991-07-02 | 1994-11-22 | Orbital Eng Pty | Motor de dois tempos policilíndrico |
US5427141A (en) * | 1994-09-19 | 1995-06-27 | Fuji Oozx Inc. | Pressure fluid control valve device |
DE19918777A1 (de) * | 1999-04-24 | 2000-10-26 | Mann & Hummel Filter | Schaltklappenverband aus montagegespritzten Schaltklappen oder Klappenmodulen |
DE10126063B4 (de) * | 2001-05-28 | 2004-07-15 | Montaplast Gmbh | Klappenvorrichtung |
DE10335561A1 (de) * | 2003-08-02 | 2005-03-10 | Mann & Hummel Gmbh | Saugmodul |
DE102004041880B4 (de) * | 2004-08-30 | 2007-08-09 | Saxonia Umformtechnik Gmbh | Klappen-Anordnung |
US7201142B2 (en) * | 2005-08-24 | 2007-04-10 | Delphi Technologies, Inc. | Variable center pivot tumble control valve geometry for an intake manifold |
FR2891886B1 (fr) * | 2005-10-07 | 2010-04-02 | Mark Iv Systemes Moteurs Sa | Dispositif de regulation a clapet et collecteur d'admission comprenant au moins un tel dispositif |
US7293546B1 (en) * | 2006-05-08 | 2007-11-13 | Delphi Technologies, Inc. | Charge motion control device using a single common drive shaft |
JP4506735B2 (ja) * | 2006-08-11 | 2010-07-21 | 株式会社デンソー | 多連一体型バルブ開閉装置 |
EP1988264A1 (fr) * | 2007-05-02 | 2008-11-05 | Mann+Hummel Gmbh | Collecteur d'amenée d'air incluant un insert réducteur de chambre de distribution |
US8028677B2 (en) * | 2008-09-09 | 2011-10-04 | Mark Iv Systemes Moteurs Usa, Inc. | Assembly and method for controlling an air intake runner |
US8056534B2 (en) * | 2009-05-22 | 2011-11-15 | Ford Global Technologies | Intake manifold system for internal combustion engine |
DE102009054184A1 (de) * | 2009-11-23 | 2011-05-26 | Mahle International Gmbh | Klappenvorrichtung und Sauganlage |
JP2011220143A (ja) * | 2010-04-06 | 2011-11-04 | Denso Corp | 内燃機関の吸気装置 |
-
2011
- 2011-08-12 EP EP11177435.2A patent/EP2557298B1/fr active Active
-
2012
- 2012-08-09 CN CN201210283294.4A patent/CN103061896B/zh active Active
- 2012-08-13 US US13/584,051 patent/US8739761B2/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
US20130037000A1 (en) | 2013-02-14 |
CN103061896B (zh) | 2016-12-21 |
EP2557298A1 (fr) | 2013-02-13 |
US8739761B2 (en) | 2014-06-03 |
CN103061896A (zh) | 2013-04-24 |
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