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Locking device for switchable valve train components

A transmission device and equipment technology, applied to valve devices, mechanical equipment, engine components, etc., can solve problems such as high processing costs

Active Publication Date: 2019-06-18
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this locking element, although the surface extrusions are generally small, the production requires relatively high machining effort

Method used

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  • Locking device for switchable valve train components
  • Locking device for switchable valve train components
  • Locking device for switchable valve train components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 and 2 The locking devices A, B shown in , for example, can each be integrated into a shifting lever (not shown) of the valve train. The switching drawbar has, for example, two lever arms, not shown, which are pivotably connected to one another. The locking devices A, B serve, for example, to switchably couple the pivoting movement of the drawbar in order to switch between two different cam lifts which are to be transmitted to the internal combustion engine during operation. on the intake or exhaust valves. In this regard, reference is made to the literature presented further above.

[0025] according to figure 1 The locking device A has a first locking body 1 and a second locking body 2 . The first closing body 1 is designed as a cylindrical piston 1' having a circular cross section with a first radius R1. Viewed in the longitudinal direction 3, the piston 1' engages by means of an axial longitudinal half into an approximately cylindrical, axial receptacle ...

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PUM

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Abstract

The invention relates to a locking device (A, B) for a switchable valve train component, said locking device having a first locking body (1, 10) and a second locking body (2, 12), said The first locking body and the second locking body can be engaged or disengaged from each other in order to couple or decouple two mutually movably arranged components, wherein the two locking bodies (1, 2; 10, 12) At least one of has at least one curved surface. In order to increase the wear resistance of the locking device, it is proposed that at least one of the two locking bodies (1, 2; 10, 12) has a plurality of curved surfaces (5, 6; 15, 16), the respective curvatures of the curved surfaces passing through the length Equal radii (R2, R3; R5, R6) describe having structurally spaced centers of curvature from each other.

Description

technical field [0001] The invention relates to a locking device for a switchable valve train component, the locking device having a first locking body and a second locking body, which can be engaged with one another or Disengagement for coupling or decoupling two mutually displaceably arranged components, wherein at least one of the two locking bodies has at least one curved surface. Background technique [0002] A switchable valve drive, such as a shifting lever, a shifting rocker, a shifting rocker or a shifting pushrod, is integrated as a cam follower into an internal combustion engine in order to reduce fuel consumption and to reduce pollutant emissions. For this purpose, the switchable cam follower enables switching between different lift curves, which are transmitted from different cams of the camshaft to one or more valves, or briefly completely shut off one or more cylinders. In such a valve train component, the locking device enables a fixed connection or disconn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/26F01L1/18F01L1/14F01L13/00
CPCF01L1/14F01L1/18F01L1/26F01L13/00F01L1/267F01L13/0005F01L13/0031F01L13/0036F01L2001/186F01L1/46F01L1/16
Inventor 沃尔克·施密特弗兰克·希姆塞尔赖纳·施温迈克尔·库格勒
Owner SCHAEFFLER TECH AG & CO KG