Patent · US Active

Hydraulic control unit for an automatic transmission of a motor vehicle

US11281238B2 · kind B2 · utility

0Cited by

5References

15Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Marcel Gutzeit · Friedrichshafen, DE
Thilo Schmidt · Meckenbeuren, DE

Key dates

Filing date	Mar 27, 2020
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Mar 27, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/0279
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydraulic control unit (4) includes a valve bush (12), a valve cover (15) partially closing the valve bush (12) on an end face (S1), a valve slide (13) guided in a longitudinal direction (L) within the valve bush (12), and a housing part (6). The housing part (6) includes a recess (8) matching an external contour of the valve bush (12). An intermediate plate (7) is configured to partially cover the valve cover (15). A spring (14) is arranged within the valve bush (12) and preloads the valve slide (13) in a starting position. The valve bush (12) is inserted, together with the valve cover (15), the valve slide (13), and the spring (14), into the recess (8) of the housing part (6) and jointly form a hydraulic valve (9). The valve bush (12) forms an inlet (19), and the valve cover (15) forms an outlet (31).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.