WO2015149773A1 - Dispositif de protection pour un limiteur de couple d'un système d'actionnement hydraulique ou pneumatique - Google Patents

Dispositif de protection pour un limiteur de couple d'un système d'actionnement hydraulique ou pneumatique Download PDF

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Publication number
WO2015149773A1
WO2015149773A1 PCT/DE2015/200151 DE2015200151W WO2015149773A1 WO 2015149773 A1 WO2015149773 A1 WO 2015149773A1 DE 2015200151 W DE2015200151 W DE 2015200151W WO 2015149773 A1 WO2015149773 A1 WO 2015149773A1
Authority
WO
WIPO (PCT)
Prior art keywords
torque limiter
protective device
opening
sealing seat
housing
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.)
Ceased
Application number
PCT/DE2015/200151
Other languages
German (de)
English (en)
Inventor
Julien DURR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to DE112015001556.6T priority Critical patent/DE112015001556A5/de
Publication of WO2015149773A1 publication Critical patent/WO2015149773A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0263—Passive valves between pressure source and actuating cylinder, e.g. check valves or throttle valves
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/26—Cover or bell housings; Details or arrangements thereof

Definitions

  • the invention relates to a protective device for a torque limiter of
  • torque limiters which have a housing which is formed from a glass fiber reinforced plastic, usually an epoxy resin.
  • plastics are very susceptible to chemical degradation by environmental influences, especially for calcium chloride (CaCl 2 ), which is used in some countries for frost protection with a high proportion of road salt in road salt.
  • CaCl 2 calcium chloride
  • NaCl sodium chloride
  • KCl potassium chloride
  • MgCl 2 magnesium chloride
  • the invention relates to a protective device for a torque limiter of
  • the protective device comprises a hollow protective body having an outer surface, with a first opening and with a second opening, wherein the openings are adapted to form a sealing contact with a first sealing seat or with a second sealing seat of a through-element to be protected in which the outer surface of the protective body has at least one of the following properties:
  • the protective body has an outer surface which has the necessary properties in order to protect the lead-through element from harmful fluid-based environmental influences, in particular from salty, acidic and / or corrosion-promoting sprayed water.
  • the lead-through element can be inserted into the protective device and the openings form a sealing contact with a first sealing seat and a second sealing seat, so that the lead-through element is shielded from fluid-based environmental influences.
  • the protective device is designed in such a way that the outer surface is chemically inert or at least sufficiently resistant over a desired service life of the leadthrough element.
  • the outer surface is particularly resistant to salts, such as calcium chloride and their solutions, especially water solutions resistant.
  • the outer surface is resistant to acids with a pH below 7, in particular between 4 and 6.
  • the outer surface is resistant to bases with a pH above 7, in particular between 8 and 10.
  • the outer surface is resistant to acids and bases in the range indicated above.
  • Torque limiter can be used with a housing of the prior art and no country-specific custom solution must be provided.
  • the protective device can be combined so easily with the torque limiter that the protective device can be used in such a cost-effective manner that it can be used independently of the intended countries or locations, for example of the motor vehicle.
  • At least the outer surface of the protective body is formed of an elastomer, preferably of a rubber.
  • a low-cost material namely an elastomer is used, preferably a (synthetic) rubber.
  • An elastomer has the advantage over at least one epoxy resin that it is (chemically) resistant to many (fluid-based) environmental influences.
  • the entire protective body is formed from an elastomer.
  • the protective body forms a type of hose, which can be mounted around the feedthrough element by the protective body is pushed over the feedthrough element.
  • the first opening and / or the second opening is formed in the contact region for a respective corresponding sealing seat made of an elastomer, so that the opening can be guided elastically via a sealing seat and sealingly locked under tension with the corresponding sealing seat, so the protection device is fixed.
  • the first opening or the second opening made of an elastomer are formed where they form a contact region to the corresponding sealing seat.
  • the respective opening should be designed to be elastic so that it can be guided over the sealing seat and is sealingly locked under tension.
  • the protective device is fixed overall with the lead-through element, so that the lead-through element is protected against environmental influences.
  • the respective opening is provided with a diameter which is smaller at least in a front region than the diameter of the sealing seat, so that here a
  • diameter refers not only to a circular cross-section, but includes any cross-section, for example, a rectangular cross-section.
  • proposed hydraulic or pneumatic actuating system having a housing to be protected with a first end and a second end and a protective device as described above, wherein the housing at the first end with a first connector with a first sealing seat and at the second end with a second connector with a second sealing seat is sealingly connectable, and wherein the protective device in assembly surrounds the housing to be protected sealingly up to the sealing seats.
  • the torque limiter is a component for a hydraulic or pneumatic
  • the torque limiter is equipped with a housing which must be protected from environmental influences, for example as described above from a glass fiber reinforced plastic, in particular based on an epoxy resin.
  • the housing has a first end and a second end connected to a first connector and to a second connector which form part of a hydraulic or pneumatic actuation system.
  • the connectors have a first sealing seat or a second sealing seat, which are set up in such a way that they can be connected to the first opening or the second opening of the protective device in such a way that, in particular, no liquid or only little to no gas can pass through and thus the Housing is protected from fluid-based environmental influences.
  • the connectors are connected to the housing to be protected in such a way that the actuating fluid can be guided through the housing but no influences are exerted on the housing from the outside when the protective device is mounted.
  • the openings of the protective device have a smaller inner diameter than a maximum outer diameter of the housing to be protected, wherein the protective device is elastically formed such that at least one opening of the protective device can be guided elastically over the maximum outer diameter.
  • the components of the torque limiter used should have the smallest possible spatial extent, in particular radial extent, especially for use in a motor vehicle, so that it is desirable not to form any additional radially outwardly directed shoulder for the protective device.
  • the protective device form radially inwardly extending flanges at the openings, so that the rigidity of the protective body is increased in this area and a particularly good sealing effect can be achieved by the thus relatively high voltages.
  • at least one of the openings is formed so elastically that it can be guided over a larger maximum outer diameter of the housing of the torque limiter, without the opening is damaged and returned to its original shape, at least insofar as a reliable sealing Effect is ensured with the corresponding sealing seat.
  • the Protective device can be combined with a housing, as it is already known in the art and can be easily mounted, at the same time a reliable seal for the fitter is easily controlled. It should be noted that the sealing contact is particularly preferably formed purely static sealing, which is sufficient for most applications of the protection device.
  • the first connector and / or the second connector is formed at least outward from a metal.
  • the formation of the at least one connector made of metal at least on the outside allows a good resistance to environmental influences.
  • the housing of the torque limiter is completely protected against fluid-based environmental influences.
  • Very particularly preferably connectors can be used which are standardized elements for a hydraulic line or a pneumatic line, so that the manufacturing costs for the connectors are particularly low.
  • an outer surface of the metal connectors forms a particularly good seal combination with an elastomer by a large resistance can be exerted by the rigid metallic surface, so that a large voltage for a good sealing effect of the protective device in the contact region of the opening relative to the connector can be generated.
  • a hydraulic or pneumatic actuation system for a friction clutch which comprises a transmitter unit and a receiver unit, wherein between the transmitter unit and the receiver unit
  • Momentenbegrenzer is provided according to the above description, wherein at least the torque limiter is accessible for splashing water can be arranged.
  • the hydraulic or pneumatic actuation system is intended to provide a
  • the hydraulic or pneumatic actuation system comprises a transmitter unit comprising at least one master cylinder with a master piston, in which a fluid is compressed, so that via a hydraulic or pneumatic connection tion to the receiving unit, which in turn is composed of at least one slave cylinder with a slave piston, penetrates into the slave cylinder and the slave piston, for example, pressed against a plate spring of a friction clutch.
  • a torque limiter is provided between the transmitter unit and the receiver unit, so that the speed of transmission is throttled.
  • the torque limiter is arranged in many configurations in such a way that it can be sprayed, which can be interspersed with aggressive components which attack the torque limiter, in particular a torque limiter with a housing made of a glass fiber reinforced plastic, for example an epoxy resin.
  • a torque limiter with a housing made of a glass fiber reinforced plastic, for example an epoxy resin.
  • a motor vehicle comprising a drive unit with an output shaft, a drive train and a hydraulic or pneumatic actuation system according to the above description, wherein the hydraulic or pneumatic actuation system is at least partially accessible for squirting rainwater.
  • the installation space situation for passenger cars of the small car class according to European classification is exacerbated.
  • the units used in a passenger car of the small car class are not significantly reduced compared to passenger cars larger car classes. Nevertheless, the available space for small cars is much smaller.
  • the above-described hydraulic or pneumatic actuation system is particularly suitable for small vehicles, because a high torque in a small space can be transferred by the high compressive forces generated.
  • the components can be arranged independently of accessibility for, for example, corrosion-promoting spray water.
  • Passenger cars are classified according to vehicle class according to, for example, size, price, weight, power, but this definition is subject to constant change according to the needs of the market.
  • vehicles of the class small cars and microcars are classified according to European classification of the class of subcompact car and in the British market they correspond to the class Supermini, for example, the class City Car.
  • Examples of the micro car class are a Volkswagen Fox or a Renault Twingo.
  • Examples of the small car class are an Alfa Romeo Mito, Volkswagen Polo, Ford Fiesta or Renault Clio.
  • FIGS. show particularly preferred embodiments, to which the invention is not limited.
  • the figures and in particular the illustrated proportions are only schematic. Show it:
  • Fig. 4 a motor vehicle with hydraulic or pneumatic actuation system.
  • a torque limiter 2 is shown, in which the first connector 14 and the second connector 15 protrude from the protective body 4, namely at the first opening 6 and the second opening 7, respectively.
  • the outer surface 5 extends over the entire visible protective body 4 to the openings 6 and 7, so that the torque limiter 2, in particular the housing 1 1 (see FIG. 2) is protected from fluid-based environmental influences.
  • the housing 1 1 has a first end 12, which is sealingly connected to the first connector 14, so that a switching fluid from the first connector to flow into the housing or can flow out of it and the housing 1 1 comprising before fluid-based environmental influences is protected.
  • a second connector 15 is introduced in the same way, so that the housing can also be flowed through from this side and is protected from fluid-based environmental influences.
  • Particularly preferred here are the first connector 14 and the second connector 15 formed entirely of metal.
  • the protective body 4 is in this case made entirely of an elastomer, preferably of a synthetic rubber, so that the first opening 6 is sealingly applied to the first sealing seat 8 under tension and is also applied to the second opening 7 on the second sealing seat 10.
  • the inner diameter 16 of the second opening 10 is significantly smaller than the maximum outer diameter 17 of the housing 1 1. Due to the elastic design of the protective body 4, the second opening 7 undamaged on the housing 1 1 can be guided or pushed and the second sealing seat 9 a good Exercise sealing and fixation of the protection device 1.
  • a hydraulic or pneumatic actuating system 3 in which a transmitter unit 19 consisting of a master cylinder and a master piston and a slave unit consisting of a slave cylinder and a slave piston via a hydraulic line 28 are connected, with a torque limiter 2, as he
  • a torque limiter 2 as he
  • a switching signal, which is applied by a clutch pedal 33 to the encoder unit 19 is limited in its action or speed by the torque limiter 2 transmitted by the hydraulic line 28 to the slave unit 20, so that the slave unit 20 acts on the plate spring 29, so in this case the friction package is released and a torque of the
  • Output shaft 23 about the rotation axis 31 is no longer transferable to the transmission shaft 32 by means of the friction clutch 18.
  • a motor vehicle 21 is shown with a drive unit 22, which is arranged with its motor axis 27 transversely to the longitudinal axis 26 in front of the driver's cab 25.
  • the drive unit 22 is shown here as an internal combustion engine, which has an output shaft
  • the friction clutch 18 is actuated here by means of the hydraulic or pneumatic actuation system 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

L'invention concerne un dispositif de protection, destiné à un limiteur de couple d'un système d'actionnement hydraulique ou pneumatique, qui comporte un corps de protection creux doté d'une surface extérieure ainsi que d'un premier et d'un second orifice, les orifices étant aménagés pour former un contact étanche avec un premier siège étanche respectivement avec un second siège étanche d'un élément traversant à protéger. Selon l'invention la surface extérieure du corps de protection possède au moins une des propriétés suivantes - résistance chimique aux sels ; - résistance chimique aux solutions salines ; - résistance chimique aux acides ; et - résistance chimique aux fluides corrosifs. Le dispositif de protection proposé ici permet d'utiliser un limiteur de couple respectivement un carter connu d'un limiteur de couple, sans avoir à trouver de solutions individuelles pour différents pays.
PCT/DE2015/200151 2014-03-31 2015-03-12 Dispositif de protection pour un limiteur de couple d'un système d'actionnement hydraulique ou pneumatique Ceased WO2015149773A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112015001556.6T DE112015001556A5 (de) 2014-03-31 2015-03-12 Schutzvorrichtung für einen Momentenbegrenzer eines hydraulischen oder pneumatischen Betätigungssystems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014205983 2014-03-31
DE102014205983.6 2014-03-31

Publications (1)

Publication Number Publication Date
WO2015149773A1 true WO2015149773A1 (fr) 2015-10-08

Family

ID=52875362

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/200151 Ceased WO2015149773A1 (fr) 2014-03-31 2015-03-12 Dispositif de protection pour un limiteur de couple d'un système d'actionnement hydraulique ou pneumatique

Country Status (2)

Country Link
DE (1) DE112015001556A5 (fr)
WO (1) WO2015149773A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107687485A (zh) * 2017-08-24 2018-02-13 安徽江淮汽车集团股份有限公司 一种带助力的离合主缸结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510223A1 (fr) * 1981-07-24 1983-01-28 Teledyne Ind Valve pneumatique pilotee, notamment pour mecanismes de transmission de vehicules automobiles
DE10026224A1 (de) * 1999-05-28 2000-11-30 Luk Lamellen & Kupplungsbau Dämpfungseinrichtung für ein hydraulisches Betätigungssystem
DE29624637U1 (de) * 1996-12-06 2006-02-02 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulisches Betätigungssystem für eine Reibungskupplung mit integriertem Ventilelement
WO2008134011A1 (fr) * 2007-04-26 2008-11-06 Northern Technologies International Corp. Systèmes pour le contrôle, l'élimination et/ou la gestion de divers types d'effets indésirables

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510223A1 (fr) * 1981-07-24 1983-01-28 Teledyne Ind Valve pneumatique pilotee, notamment pour mecanismes de transmission de vehicules automobiles
DE29624637U1 (de) * 1996-12-06 2006-02-02 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulisches Betätigungssystem für eine Reibungskupplung mit integriertem Ventilelement
DE10026224A1 (de) * 1999-05-28 2000-11-30 Luk Lamellen & Kupplungsbau Dämpfungseinrichtung für ein hydraulisches Betätigungssystem
WO2008134011A1 (fr) * 2007-04-26 2008-11-06 Northern Technologies International Corp. Systèmes pour le contrôle, l'élimination et/ou la gestion de divers types d'effets indésirables

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107687485A (zh) * 2017-08-24 2018-02-13 安徽江淮汽车集团股份有限公司 一种带助力的离合主缸结构

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