EP0234022B1 - Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren - Google Patents

Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren Download PDF

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Publication number
EP0234022B1
EP0234022B1 EP86117280A EP86117280A EP0234022B1 EP 0234022 B1 EP0234022 B1 EP 0234022B1 EP 86117280 A EP86117280 A EP 86117280A EP 86117280 A EP86117280 A EP 86117280A EP 0234022 B1 EP0234022 B1 EP 0234022B1
Authority
EP
European Patent Office
Prior art keywords
retaining cap
outer diameter
collar
cylindrical part
cylindrical
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.)
Expired
Application number
EP86117280A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0234022A2 (de
EP0234022A3 (en
Inventor
Walter Dipl.-Ing. Speil
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.)
Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
Original Assignee
Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
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 Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH filed Critical Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
Publication of EP0234022A2 publication Critical patent/EP0234022A2/de
Publication of EP0234022A3 publication Critical patent/EP0234022A3/de
Application granted granted Critical
Publication of EP0234022B1 publication Critical patent/EP0234022B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2411—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the valve stem and rocker arm

Definitions

  • the invention relates to an inner element for a hydraulic valve lash compensation element for internal combustion engines (see e.g. FR-A 2 540 554), which inner element consists of a cylinder part which is closed on one side and a piston part which is guided in a longitudinally displaceable manner therein and which projects beyond and in the open end of the cylinder part Area has a reduced outer diameter, in which area the radial flange of a retaining cap engages, which is placed with a cylindrical collar on the end of the cylinder part, which also has a reduced outer diameter, which has an additional diameter reduction in the form of a circumferential groove into which the cylindrical collar the retaining cap engages in a form-fitting manner at at least some circumferential locations, and the retaining cap has a projection radially projecting beyond the outer diameter of the cylinder part at at least one circumferential location.
  • Such known inner elements are used in prepared bores e.g. of rocker arms or tappets with which they work.
  • the projection which projects radially beyond the outer diameter of the cylinder part engages in an increase in the diameter of the bore into which the inner element is inserted .
  • Such an enlargement of the diameter does not have to be produced separately, because it is provided anyway for processing reasons at the end of the bore as an outlet for the processing tool.
  • the cylindrical collar When attaching the retaining cap to the open end of the cylinder part, the cylindrical collar must be molded into the circumferential groove at some circumferential points by means of radially acting stamping tools. In the known designs of the retaining cap, this requires a special alignment process in order to avoid the embossing tools attacking at the points at which the radial projections are provided which project beyond the outer diameter of the cylinder part. This is the only way to prevent these projections from being damaged or rendered completely ineffective during this embossing process.
  • the invention has for its object to propose an embodiment in which the holding cap can be fixed to the cylinder part in a simple manner without the need for a previous alignment process.
  • the invention achieves this goal in that the collar of the retaining cap in the initial state has a cylindrical outer contour which does not exceed the outer diameter of the cylinder part and that the collar has indentations in at least two locations distributed over the circumference in the installed state of the retaining cap, at which the material the retaining cap is molded into the circumferential groove of the cylinder part, the collar at the circumferential points between the indentations causing such an enlargement of the diameter that it exceeds the outer diameter of the cylinder part there. Since in this type of attachment of the retaining cap, the retaining projections are formed at the same time as the indentations for the fixing, the risk of damage to the retaining projections when the retaining cap is attached is eliminated from the outset.
  • an inner element according to the invention is inserted into the bore 1 of a rocker arm 2, which consists of the cylinder part 3 with its closed bottom 4 and the piston part 5 guided therein.
  • the piston part 5 contains a check valve in a known manner and a coil spring is arranged between the piston and the cylinder part in a known manner, which strives to push the two parts apart.
  • the piston part 5 protrudes beyond the open end of the cylinder part 3 and is reduced to a reduced outer diameter 6 in this area.
  • the corresponding end of the cylinder part 3 also has a reduced outer diameter 7, in the area of which a circumferential groove 8 is additionally provided.
  • a retaining cap 9 is placed, which engages with a radial flange 10 in the diameter reduction 6 of the piston part and thus prevents the piston part 5 from slipping out of the cylinder part 3.
  • projections 11 are formed out of the cylindrical collar of the holding cap 9, which is formed into the groove 8 to hold it, which protrude beyond the outer diameter of the cylinder part 3 and thereby engage in the diameter enlargement 12 at the end of the bore 1 of the rocker arm 2. These projections 11 prevent the entire inner element from slipping out of the bore 1.
  • FIG. 2 shows how the retaining cap 9 is designed in the initial state. It has the radial flange 10, which merges with the cylindrical collar 13 on its outer diameter. This collar 13 has an outer contour which lies within the outer diameter of the cylinder part 3, but falls only slightly below this.
  • Fig. 3 shows how the retaining cap 9 is attached to the cylinder part 3.
  • the cylindrical collar 13 is deformed radially inwards by embossing tools (not shown) such that it engages in a form-fitting manner in the circumferential groove 8 of the cylinder part 3.
  • embossing tools not shown
  • the areas that are pressed in between them experience the circumferential areas of the collar 13 an increase in diameter such that the radially beyond the outer diameter of the cylinder part 3 protruding projections 11 are formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP86117280A 1986-02-28 1986-12-11 Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren Expired EP0234022B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606537 1986-02-28
DE19863606537 DE3606537A1 (de) 1986-02-28 1986-02-28 Innenelement fuer ein hydraulisches ventilspielausgleichselement fuer verbrennungsmotoren

Publications (3)

Publication Number Publication Date
EP0234022A2 EP0234022A2 (de) 1987-09-02
EP0234022A3 EP0234022A3 (en) 1988-01-13
EP0234022B1 true EP0234022B1 (de) 1989-02-08

Family

ID=6295169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117280A Expired EP0234022B1 (de) 1986-02-28 1986-12-11 Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren

Country Status (6)

Country Link
US (1) US4716866A (enrdf_load_stackoverflow)
EP (1) EP0234022B1 (enrdf_load_stackoverflow)
JP (1) JPS62206207A (enrdf_load_stackoverflow)
BR (1) BR8700885A (enrdf_load_stackoverflow)
DE (2) DE3606537A1 (enrdf_load_stackoverflow)
ES (1) ES2006682B3 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422080A1 (de) * 1994-06-24 1995-09-21 Audi Ag Schwinghebel zur Betätigung eines Ventils einer Brennkraftmaschine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941523A (en) * 1959-01-14 1960-06-21 Johnson Products Inc Hydraulic tappet
US3358660A (en) * 1967-04-27 1967-12-19 Johnson Products Inc Pull-out retainer for hydraulic lash adjuster
US3516393A (en) * 1968-06-04 1970-06-23 Johnson Products Inc Anti-pump-up tappet
US4227495A (en) * 1978-09-21 1980-10-14 Eaton Corporation Hydraulic lash adjuster with oil reservoir separator
JPS5937220A (ja) * 1982-08-26 1984-02-29 Honda Motor Co Ltd 油圧式ラツシユアジヤスタ
DE3304398A1 (de) * 1983-02-09 1984-08-09 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Innenelement fuer ein hydraulisches ventilspielausgleichselement fuer verbrennungsmotoren
JPS59150914A (ja) * 1983-02-17 1984-08-29 Aisin Seiki Co Ltd 油圧リフタ
FR2542372B1 (fr) * 1983-03-08 1987-01-23 Mitsubishi Motors Corp Culbuteur et son procede de fabrication
US4502428A (en) * 1984-02-22 1985-03-05 General Motors Corporation Lash adjuster with follower body retainer
JPH0625526B2 (ja) * 1984-03-31 1994-04-06 日鍛バルブ株式会社 油圧式弁間隙自動補正装置
DE3412153A1 (de) * 1984-03-31 1985-10-10 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Verfahren zum befestigen eines trichterfoermigen fuehrungsteiles in der bohrungswand des tassenfoermigen gehaeuses eines sich selbsttaetig hydraulisch einstellenden ventilstoessels
JPH029046Y2 (enrdf_load_stackoverflow) * 1984-08-29 1990-03-06
US4644913A (en) * 1985-10-02 1987-02-24 Chrysler Motors Corporation Recirculating valve lash adjuster

Also Published As

Publication number Publication date
ES2006682B3 (es) 1992-11-01
EP0234022A2 (de) 1987-09-02
JPH0451645B2 (enrdf_load_stackoverflow) 1992-08-19
JPS62206207A (ja) 1987-09-10
EP0234022A3 (en) 1988-01-13
US4716866A (en) 1988-01-05
DE3662069D1 (en) 1989-03-16
DE3606537A1 (de) 1987-09-03
BR8700885A (pt) 1987-12-29

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