Tensioning rail, and traction mechanism drive including such a tensioning rail

Patent metadata

Field	Value
Publication number	US-9759292-B2
Application number	US-201415038684-A
Country	US
Kind code	B2
Filing date	Sep 23, 2014
Priority date	Nov 25, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A tensioning rail ( 2 ) for tensioning an endlessly circulating tensioner ( 4 ) is provided, wherein the tensioning rail ( 2 ) for tensioning the ternsioner ( 4 ) is curved in a longitudinal direction (L), the tensioning rail ( 2 ) has a base wall ( 6 ) and two jaws ( 8 ) protruding from the base wall ( 6 ), and the tensioning rail ( 2 ) has at least one U-shaped profiled segment ( 10 ) and a T-shaped profiled segment ( 12 ), which are each formed by the base wall ( 6 ) and the jaws ( 8 ), wherein the tensioning rail ( 2 ) includes a guiding element ( 14 ) for a rotary bearing ( 16 ) in the U-shaped profiled segment ( 10 ) and a guiding element ( 18 ) for a contact bearing ( 20 ) in the T-shaped profiled segment ( 12 ).

First claim

What is claimed is:

1. A tensioning rail for tensioning a continuously revolving tractioner, the tensioning rail for tensioning the tractioner being arched in the longitudinal direction, the tensioning rail comprising:
a base wall and two cheeks protruding from the base wall, at least one U-shaped profile section and one T-shaped profile section, each being formed by the base wall and the cheeks,
the tensioning rail in the U-shaped profile section including a guide element for a pivot bearing, and
the tensioning rail with aid of the cheeks forming a receptacle in the T-shaped profile section, a spacer piece being inserted in the receptacle in order to form an enlarged contact area for contacting a tensioner.

2. The tensioning rail as recited in claim 1 wherein the base wall and the cheeks are one piece.

3. The tensioning rail as recited in claim 1 wherein the spacer piece for a contact bearing is formed by a cylindrical metal pin.

4. The tensioning rail as recited in claim 1 wherein the spacer piece for a contact bearing forms a flush surface with end faces of the cheeks.

5. The tensioning rail as recited in claim 1 wherein the spacer piece protrudes beyond the T-shaped profile section of the tensioning rail.

6. The tensioning rail as recited in claim 5 wherein the spacer piece for a contact bearing has a spherical segment-shaped contact area for force absorption.

7. The tensioning rail as recited in claim 1 wherein the T-shaped profile section is situated between two U-shaped profile sections of the at least one U-shaped profile section.

8. A traction mechanism drive comprising:
a drive wheel situated on a drive shaft of an internal combustion engine;
at least one driving wheel;
a continuously revolving tractioner encompassing the drive wheel and the at least one driving wheel;
the tensioning rail as recited in claim 1 for tensioning the tractioner; and
a tensioner for transmitting a tension force to the tensioning rail.

Assignees

• Schaeffler Technologies Ag

Inventors

• Moura Carlos
• Almeida Cesar
• Sayao Daniel Dos Anjos

Classifications

• F16H7/08 Primary

  Means for varying tension of belts, ropes or chains  (pulleys of adjustable construction F16H55/52) · CPC title

• F16H7/06

  with chains · CPC title

• F16H7/18

  Means for guiding or supporting belts, ropes, or chains (construction of pulleys F16H55/36) · CPC title

• F16H2007/0872

  Sliding members · CPC title

• F16H7/02

  with belts; with V-belts · CPC title