EP0235599B1 - Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren - Google Patents

Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren Download PDF

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Publication number
EP0235599B1
EP0235599B1 EP87101439A EP87101439A EP0235599B1 EP 0235599 B1 EP0235599 B1 EP 0235599B1 EP 87101439 A EP87101439 A EP 87101439A EP 87101439 A EP87101439 A EP 87101439A EP 0235599 B1 EP0235599 B1 EP 0235599B1
Authority
EP
European Patent Office
Prior art keywords
internal
region
outer diameter
retaining cap
peripheral
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
EP87101439A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0235599A1 (de
Inventor
Georg E. H. Dr.-Ing. Schaeffler
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 EP0235599A1 publication Critical patent/EP0235599A1/de
Application granted granted Critical
Publication of EP0235599B1 publication Critical patent/EP0235599B1/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, which inner element consists of a cylinder part closed on one side and a piston part which is guided longitudinally displaceably therein, which projects beyond the open end of the cylinder part and has a reduced outer diameter in this area, in which area the radial flange engages a retaining cap, 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, in which the cylindrical collar of the retaining cap engages in a form-fitting manner at at least some circumferential locations, the Retaining cap has at least one circumferential point a projection radially projecting beyond the outer diameter of the cylinder part, and the collar has a first longitudinal region adjacent to the radial flange I has, in which the radially overlapping the outer diameter of the cylinder part is arranged.
  • Such known inner elements are drilled in prepared bores e.g. of rocker arms or tappets with which they work.
  • the projection radially projecting 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. a.
  • Such an enlargement of the diameter does not have to be produced separately for this purpose, since it is provided for processing purposes 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 by a second longitudinal region axially adjacent to the first longitudinal region without mutual overlap.
  • the embossing tools can engage at any desired circumferential locations without there being a risk that the radial projections will be affected. It is even possible to provide three or more radially displaceable embossing jaws which together grip the entire circumference of the retaining cap, so that the material of the collar is molded into the circumferential groove over its entire circumference.
  • 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 and, at some peripheral points, has the cut-out projections 11 which are bent outward at an angle. The cylindrical collar 13 is present over the remaining peripheral region.
  • the cylindrical collar is deformed radially inward by embossing tools (not shown) such that it engages in the circumferential groove 8 in a form-fitting manner. Since the area of the cylindrical collar 13 which is deformed into the circumferential groove lies exclusively below the area in which the projections 11 are located, the area 13 can be deformed, without the deformation tools having to touch the area of the projections 11. The risk of the projections 11 being affected when the regions 13 are deformed is thus eliminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP87101439A 1986-02-21 1987-02-03 Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren Expired EP0235599B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605645 1986-02-21
DE19863605645 DE3605645A1 (de) 1986-02-21 1986-02-21 Innenelement fuer ein hydraulisches ventilspielausgleichselement fuer verbrennungsmotoren

Publications (2)

Publication Number Publication Date
EP0235599A1 EP0235599A1 (de) 1987-09-09
EP0235599B1 true EP0235599B1 (de) 1989-12-13

Family

ID=6294658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101439A Expired EP0235599B1 (de) 1986-02-21 1987-02-03 Innenelement für ein hydraulisches Ventilspielausgleichselement für Verbrennungsmotoren

Country Status (5)

Country Link
US (1) US4716865A (ja)
EP (1) EP0235599B1 (ja)
JP (1) JPS62197608A (ja)
BR (1) BR8700793A (ja)
DE (2) DE3605645A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706006A1 (de) * 1987-02-25 1988-09-08 Schaeffler Waelzlager Kg Hydraulisches spielausgleichselement fuer ventilsteuerungen an verbrennungsmotoren
DE19515434A1 (de) * 1995-04-27 1996-10-31 Schaeffler Waelzlager Kg Hydraulische Spielausgleichsvorrichtung
US6325034B1 (en) * 2000-12-06 2001-12-04 Eaton Corporation Hydraulic lash adjuster

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
US4621398A (en) * 1982-12-06 1986-11-11 Rockwell International Corporation Automaton tool mounting system
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 (ja) * 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
EP0235599A1 (de) 1987-09-09
DE3605645A1 (de) 1987-08-27
BR8700793A (pt) 1987-12-15
JPH0448925B2 (ja) 1992-08-10
DE3761157D1 (de) 1990-01-18
JPS62197608A (ja) 1987-09-01
US4716865A (en) 1988-01-05

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