SE448851B - HEADBREAM CYLINDER WITH CENTRAL VALVE - Google Patents
HEADBREAM CYLINDER WITH CENTRAL VALVEInfo
- Publication number
- SE448851B SE448851B SE8100065A SE8100065A SE448851B SE 448851 B SE448851 B SE 448851B SE 8100065 A SE8100065 A SE 8100065A SE 8100065 A SE8100065 A SE 8100065A SE 448851 B SE448851 B SE 448851B
- Authority
- SE
- Sweden
- Prior art keywords
- piston
- valve
- stop
- brake cylinder
- central valve
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/232—Recuperation valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Description
448 851 Éßïflvfï av knsttara cyiinderföriëngningar som finns i de kända cyiindrarna eiimineras härigenom. 448 851 Éßï fl vfï of known cyinder compounds found in the known cylinders are thereby eliminated.
Genom den östtyska patentskriften 66564 är en tvillinghuvudcylinder Å för hydrauiiska bromssystem tidigare känd där en cyiinder med ett stiftformat transmissionseiement är anordnat vilket förfiyttas med koiven. Denna tviiiingskrets arbetar emeiiertid efter andra principer än de som gäiier för rubricerade uppfinning eftersom koïvarna består av två komponenter var. Dessa två komponenter förenas av nämnda transmissionseiement. Liknande förhå11anden,med avseende på ventiiens utformning, råder i den kända cyiindern som skiijer sig radikait från föreïiggande uppfinning. I det senare faiiet biidas sâiunda ventiï- eïementet av ett tätningseiement anordnat vid koïvdeiens ändyta.From the East German patent specification 66564 a twin master cylinder Å for hydraulic braking systems is previously known where a cylinder with a pin-shaped transmission element is arranged which is moved with the coil. This circuit always operates according to principles other than those of the title invention because the coils consist of two components each. These two components are joined by said transmission element. Similar conditions, with respect to the design of the valve, prevail in the known cylinder which differs radically from the present invention. In the latter case, the vent element is thus provided by a sealing element arranged at the end surface of the coefficient.
När huvudcy1indern pâverkas förfiyttas såiunda koiven och tätnings- eiementet i riktning mot högtryckskammaren via en stötstâng, varvid tätningseiementet stänger kompenseringsventiïen. När bromsnings- operationen avs1utats,tvingar en stor kompressionsfjäden anordnad vid husets ändyta,ko1varna tiiïbaka ti11 deras initiailäge, medan tätningseïementet öppnar kompenseringsventiien. Denna kända huvud- bromscylinder har även den en avsevärd iängd beroende på den stora kompressionsfjädern anordnad utanför huset iiksom på den uppdeiade ' koivkonstruktionen.Thus, when the master cylinder is actuated, the coil and the sealing element are moved in the direction of the high-pressure chamber via a push rod, the sealing element closing the compensation valve. When the braking operation is completed, a large compression spring disposed at the end face of the housing forces the pistons back to their initial position, while the sealing element opens the compensation valve. This known master brake cylinder also has a considerable length depending on the large compression spring arranged outside the housing as well as on the divided 'koiv construction.
Efterföijande underkrav anger utföringsformer av uppfinningen där transmissionseiementet utgörs av ett stift anordnat i en säkrings- ring och där stoppet,fast förbundet med huset,utgörs av en fjäder- ring införd i ett spår i huset. Dessa utföringsformer innebär en speciellt enkeï och kompakt konstruktion varigenom säkerstäiïes att transmissionseïementet aïitid iigger an mot stoppet och ventiïstången, varigenom gnidning meïian det stiftformade trans- missionseïementet och cyïinderborrningen undviks, viïket annars kan äventyra säkerheten. 448 851 Genom den anerikanska patentskriften 3 l65 896 är en huvudbroms- cylinder känd där en ring är anordnad som följer med kolven i dess rörelse. Denna ring har emellertid en helt annan funktion än säk- ringsringen som används i den beskrivna utföringsformen av upp- finningen. Dvs i motsats till vad som gäller vid uppfinningen finns ej någon central ventil i huvudbromscylindern. Istället formas ventilen av den nämnda ringen, som verkar som en tätningshylsa vilket resulterar i en ökad friktion vid tätningsringen. >En föredragen utföringsform av uppfinningen beskrivs närmare nedan under hänvisning till bifogade figurer.Subsequent subclaims state embodiments of the invention where the transmission element consists of a pin arranged in a securing ring and where the stop, fixedly connected to the housing, consists of a spring ring inserted in a groove in the housing. These embodiments provide a particularly simple and compact construction which ensures that the transmission element abuts the stop and the valve stem at all times, thereby avoiding friction between the pin-shaped transmission element and the cylinder bore, which may otherwise jeopardize safety. 448 851 From the American patent specification 3 l65 896 a master brake cylinder is known in which a ring is arranged which follows the piston in its movement. However, this ring has a completely different function than the securing ring used in the described embodiment of the invention. That is, in contrast to what applies in the invention, there is no central valve in the master brake cylinder. Instead, the valve is formed by the said ring, which acts as a sealing sleeve which results in an increased friction at the sealing ring. A preferred embodiment of the invention is described in more detail below with reference to the accompanying figures.
Figur l visar en delvis sektionerad vy över en huvudbromscylinder.Figure 1 shows a partially sectioned view of a master brake cylinder.
Figur 2 visar ett transmissionselement med säkringsring.Figure 2 shows a transmission element with safety ring.
Huvudbromscylindern l,som visas delvis i figur l,innefattar ett cylindriskt hus 2 i vilket en kolv 4 är anordnad påverkad av en StÖïSïåfi9 3. En kanal 5 anordnad i husets vägg an- sluter en ej visad tryckmediekälla till en tryckkammare 6.The master brake cylinder 1, shown in part in Figure 1, comprises a cylindrical housing 2 in which a piston 4 is arranged actuated by a shock valve 3. A channel 5 arranged in the wall of the housing connects a source of pressure medium (not shown) to a pressure chamber 6.
I kolven 4 är en central ventil anordnad som är öppen i icke aktiverat läge för att säkerställa att respektive bromskrets ej står under tryck.In the piston 4 a central valve is arranged which is open in the inactivated position to ensure that the respective brake circuit is not under pressure.
Nämnda centrala ventil består av ett ventilelement 8 med ventil- stång 9 anordnad i en central urtagning 7 i kolven 4. Ventilstången är belägen i en central längsgående borrning i kolven 4. Ventil- elementet 8 påverkas av en ventilfjäder i stängande riktning. I stängt läge, då den centrala längsgående borrningen ll är stängd av ventilelementets 8 huvud, sträcker sig ventilstången 9 från den centrala borrningen ll på motsatt sida mot den där huvudet går in i urtagningen l2, passerar genom kolven 4 och går vinkelrätt mot borrningens ll längdriktning. 448 851 I urtagningen 12 är ett transmissionse1ement, 1äfip1igen ett trans- missionsstift 13, anordnat, vi1ket sträcker sig från ko1ven 4 i radie11 riktning. Nämnda transmissionsstift 13 är 1ämp1igen 1âst i'en säkringsring som är axie11t skjutbar på kolvens periferi.Said central valve consists of a valve element 8 with valve rod 9 arranged in a central recess 7 in the piston 4. The valve rod is located in a central longitudinal bore in the piston 4. The valve element 8 is actuated by a valve spring in the closing direction. In the closed position, when the central longitudinal bore 11 is closed by the head of the valve element 8, the valve rod 9 extends from the central bore 11 on the opposite side to the one where the head enters the recess 12, passes through the piston 4 and goes perpendicular to the longitudinal direction of the bore 11 . 448 851 In the recess 12, a transmission element, once again a transmission pin 13, is arranged, which extends from the piston 4 in the radius direction. Said transmission pin 13 is suitably mounted in a securing ring which is axially slidable on the periphery of the piston.
Ett st0PD= 1ämp1igen i form av en fjäderring 15, är anordnat i ett spår i cy1inderhuset 2 framför transmissionsstiftet 13 resp säkrings- ringen 14.A pillar = suitably in the form of a spring ring 15, is arranged in a groove in the cylinder housing 2 in front of the transmission pin 13 and the safety ring 14, respectively.
Huvudbromscy1indern och specie11t den centra1a venti1funktionen _ arbetar på fö1jande sätt: _ När tryckstången 3 påverkas förf1yttas ko1ven 4 i samma riktning förbi kompenseringsventi1en 5 och stänger därigenom tryckkammaren 6. Härigenom kommer tryckmediet att utsättas för tryck, utöver atmosfärtrycket, av ko1ven 4. Den centra1a venti1en kommer att förb1i stängd medeist venti1fjädern 9 under denna röre1se vi1ket innebär att tryckökning sker. Vid siutet av bromsningsoperationen förf1yttas tryckstången 3 och med denna ko1ven 4 ti11baka i motsatt riktning av en tryckfjäder 16. I röre1sens sista fas kommer säkringsringen 14 att aniigga mot fjäderringen 15 som tjänar som stopp, varigenom säkringsringen 14 ti11sammans med transmissionsstiftet 13 förf1yttas. i urtagningen 12 re1ativt ko1ven 4. Som ett resu1tat av denna röre1se kommer transmissionsstiftet 13 att an1igga mot venti1stângen 9 i venti1e1ementet 8, varigenom nämnda venti1e1ement förf1yttas axie11t och öppnar den 1ängsgående borrningen 11 så att tryckba1ansering upp- kommer me11an tryckkammaren 6 och tryckmediekä11an via kompenserings- ventilen 5. _The main brake cylinder and especially the central valve function _ operate in the following way: When the pressure rod 3 is actuated, the piston 4 is moved in the same direction past the compensation valve 5 and thereby closes the pressure chamber 6. will pass behind the closed valve spring 9 during this movement, which means that the pressure increase takes place. At the end of the braking operation, the push rod 3 and with this piston 4 are moved backwards in the opposite direction by a compression spring 16. In the last phase of the movement, the securing ring 14 will abut against the spring ring 15 which serves as a stop, thereby moving the securing ring 14 together with the transmission pin 13. in the recess 12 relative to the piston 4. As a result of this movement, the transmission pin 13 will abut against the valve rod 9 in the valve element 8, whereby said valve element is moved axially and opens the longitudinal bore 11 so that pressure contact and pressure valve 5. _
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803001186 DE3001186A1 (en) | 1980-01-15 | 1980-01-15 | MAIN BRAKE CYLINDER WITH CENTRAL VALVE |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8100065L SE8100065L (en) | 1981-07-16 |
SE448851B true SE448851B (en) | 1987-03-23 |
Family
ID=6092052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8100065A SE448851B (en) | 1980-01-15 | 1981-01-08 | HEADBREAM CYLINDER WITH CENTRAL VALVE |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS56142743A (en) |
DE (1) | DE3001186A1 (en) |
ES (1) | ES8200603A1 (en) |
FR (1) | FR2473439A1 (en) |
GB (1) | GB2067252A (en) |
IT (1) | IT1135045B (en) |
MX (1) | MX151761A (en) |
SE (1) | SE448851B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339366A1 (en) * | 1983-10-29 | 1985-05-09 | Alfred Teves Gmbh, 6000 Frankfurt | MAIN CYLINDER |
JPS6159156U (en) * | 1984-09-25 | 1986-04-21 | ||
DE3717090A1 (en) * | 1987-05-21 | 1988-12-01 | Bosch Gmbh Robert | INLET VALVE FOR MAIN BRAKE CYLINDER |
JPS63189872U (en) * | 1987-05-29 | 1988-12-06 | ||
DE3835396A1 (en) * | 1988-10-18 | 1990-04-19 | Teves Gmbh Alfred | Master cylinder for hydraulic brake systems |
DE4241786A1 (en) * | 1992-12-11 | 1994-06-16 | Teves Gmbh Alfred | Master cylinder with central valve |
GB9301176D0 (en) * | 1993-01-21 | 1993-03-10 | Lucas Ind Plc | Hydraulic master cylinder |
US5417067A (en) * | 1994-03-25 | 1995-05-23 | Alliedsignal Inc. | Master cylinder piston |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD66564A (en) * | ||||
US2163874A (en) * | 1936-10-23 | 1939-06-27 | Bendix Prod Corp | Compressor for hydraulic brakes |
US2246140A (en) * | 1938-04-11 | 1941-06-17 | Kelsey Hayes Wheel Co | Hydraulic brake |
GB551086A (en) * | 1941-08-01 | 1943-02-08 | Bendix Aviat Corp | Improvements in or relating to liquid pressure braking systems |
FR921176A (en) * | 1946-11-29 | 1947-04-29 | Control cylinder for brake or other hydraulic device | |
GB954422A (en) * | 1959-06-04 | 1964-04-08 | Girling Ltd | Master cylinder for hydraulic braking systems |
FR1553933A (en) * | 1967-12-05 | 1969-01-17 | ||
DE2645134A1 (en) * | 1975-10-08 | 1977-08-25 | Nissan Motor | Wear and corrosion resistant aluminium cylinder - operating with a piston provided on the internal surface with an aluminium oxide or nickel coating |
FR2365468A1 (en) * | 1976-09-22 | 1978-04-21 | Gancel Pierre | Master cylinder feeding brake circuit - has shaft sliding in bore to block connection between fluid reservoir and compression chamber when pedal is depressed |
FR2365488A1 (en) * | 1976-09-22 | 1978-04-21 | Thiolat Freres Sa | Box formed from folded blank - has handle with tabs received in slots of end wall tabs to lock box together and allow lifting |
EP0008863B1 (en) * | 1978-08-31 | 1982-01-27 | Automotive Products Public Limited Company | Hydraulic master cylinder |
-
1980
- 1980-01-15 DE DE19803001186 patent/DE3001186A1/en active Granted
- 1980-12-18 GB GB8040503A patent/GB2067252A/en not_active Withdrawn
-
1981
- 1981-01-08 SE SE8100065A patent/SE448851B/en not_active IP Right Cessation
- 1981-01-12 MX MX185522A patent/MX151761A/en unknown
- 1981-01-14 ES ES498486A patent/ES8200603A1/en not_active Expired
- 1981-01-15 FR FR8100667A patent/FR2473439A1/en active Granted
- 1981-01-15 IT IT19148/81A patent/IT1135045B/en active
- 1981-01-16 JP JP396281A patent/JPS56142743A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
ES498486A0 (en) | 1981-11-01 |
FR2473439A1 (en) | 1981-07-17 |
IT8119148A0 (en) | 1981-01-15 |
ES8200603A1 (en) | 1981-11-01 |
DE3001186A1 (en) | 1981-08-13 |
FR2473439B1 (en) | 1985-02-22 |
SE8100065L (en) | 1981-07-16 |
IT1135045B (en) | 1986-08-20 |
MX151761A (en) | 1985-03-05 |
DE3001186C2 (en) | 1992-07-16 |
JPS56142743A (en) | 1981-11-07 |
GB2067252A (en) | 1981-07-22 |
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