Claw coupling for interlockingly connecting a first rotatable component to a second rotatable component

Patent metadata

Field	Value
Publication number	US-11739798-B2
Application number	US-202017436471-A
Country	US
Kind code	B2
Filing date	Mar 5, 2020
Priority date	Mar 11, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The disclosure relates to a claw coupling for interlockingly connecting a first rotatable component to a second rotatable component, wherein a sliding sleeve is non-rotatably and axially slidably arranged on the first rotatable component and a coupling body is non-rotatably arranged on the second rotatable component, the sliding sleeve being axially movable for interlocking connection to the coupling body in order to connect the first component to the second component, at least one spring-loaded shifting ring being movably mounted, non-rotatably and axially relative to the sliding sleeve, on the sliding sleeve, and a damping chamber, formed in dependence on the relative motion, is provided in order to delay the axial motion. The disclosure further relates to an electrical drive axle of a vehicle having at least the claw coupling. In addition, the disclosure relates to a method for interlockingly connecting the first rotatable component to the second rotatable component via a claw coupling.

First claim

The invention claimed is:

1. A claw coupling for interlockingly connecting a first rotatable component to a second rotatable component, comprising a sliding sleeve that is non-rotatably and axially displaceably arranged on the first rotatable component and a coupling body that is non-rotatably arranged on the second rotatable component, wherein the sliding sleeve is axially movable for interlocking connection to the coupling body in order to connect the first component to the second component, wherein at least one spring-loaded shift ring is mounted on the sliding sleeve so as to be non-rotatable and axially movable relative to the sliding sleeve, and wherein a damping chamber is formed in dependence upon relative movement for slowing down the axial movement, wherein the shift ring is coupled with an actuator for axial movement of the shift rind and of the associated sliding sleeve, the shift rind including an engagement groove therein, the actuator being disposed within with the engagement groove.

2. The claw coupling as claimed in claim 1 , wherein the damping chamber can be formed by the relative movement between the sliding sleeve and the shift ring, wherein the shift ring is associated as an annular piston with the damping chamber formed at least by the sliding sleeve.

3. The claw coupling as claimed in claim 1 , wherein the shift ring is coupled with the sliding sleeve via at least one spring element.

4. The claw coupling as claimed in claim 3 , wherein the spring element can be tensioned between the shift ring and the sliding sleeve in the case of a tooth-to-tooth position between toothed arrangements of the sliding sleeve and the coupling body by the axial movement of the shift ring relative to a blocked sliding sleeve and, owing to a resulting relative movement between the sliding sleeve and the shift ring, the damping chamber can be formed.

5. The claw coupling as claimed in claim 4 , wherein the relative movement between the shift ring and the sliding sleeve after elimination of the tooth-to-tooth position can be braked by a damping medium which has flowed into the damping chamber.

6. The claw coupling as claimed in claim 5 , wherein the damping chamber has at least one vent opening for the inflow and outflow of the damping medium.

7. The claw coupling as claimed in claim 6 , wherein the vent opening has at least one diaphragm for controlling the inflow and outflow of the damping medium.

8. The claw coupling of claim 4 , wherein the sliding sleeve comprises an engagement arm extending outwardly from a main body of the sliding sleeve, wherein the spring engages the engagement arm to selectively move the sliding sleeve.

9. The claw coupling of claim 8 , wherein the shift ring comprises an engagement arm extending outwardly from a main body of the shift ring, wherein the engagement arm of the shift ring is positioned to oppose the engagement arm of the sliding sleeve with the spring positioned therebetween.

10. The claw coupling as claimed in claim 1 , wherein the damping chamber in a region of the shift ring functions as a piston and includes at least one sealing lip.

11. The claw coupling of claim 10 , wherein the sealing lip comprises a first section in contact with the shift ring and a second section in contact with a portion of the sliding sleeve.

12. The claw coupling as claimed in claim 1 , wherein the first component is a spur gear in the form of a movable gear and wherein the second component is a shaft in the form of an intermediate shaft.

13. An electric drive axle of a vehicle, having at least one claw coupling as claimed in claim 1 .

14. The claw coupling of claim 1 , wherein the sliding sleeve comprises a cylindrical portion having a toothed arrangement and a radial flange from which an annular prolongation protrudes axially.

15. A claw coupling for interlockingly connecting a first rotatable component to a second rotatable component, comprising a sliding sleeve that is non-rotatably and axially displaceably arranged on the first rotatable component and a coupling body that is non-rotatably arranged on the second rotatable component, wherein the sliding sleeve is axially movable for interlocking connection to the coupling body in order to connect the first component to the second component, wherein at least one spring-loaded shift ring is mounted on the sliding sleeve so as to be non-rotatable and axially movable relative to the sliding sleeve, and wherein a damping chamber is formed in dependence upon relative movement for slowing down the axial movement, wherein the shift ring is coupled with the sliding sleeve via at least one spring element, the spring element can be tensioned between the shift ring and the sliding sleeve in the case of a tooth-to-tooth position between toothed arrangements of the sliding sleeve and the coupling body by the axial movement of the shift ring relative to a blocked sliding sleeve and, owing to a resulting relative movement between the sliding sleeve and the shift ring, the damping chamber can be formed, wherein the relative movement between the shift ring and the sliding sleeve after elimination of the tooth-to-tooth position can be braked by a damping medium which has flowed into the damping chamber, wherein the damping chamber has at least one vent opening for the inflow and outflow of the damping medium, wherein the vent opening has at least one diaphragm for controlling the inflow and outflow of the damping medium.

16. A claw coupling for interlockingly connecting a first rotatable component to a second rotatable component, comprising a sliding sleeve that is non-rotatably and axially displaceably arranged on the first rotatable component and a coupling body that is non-rotatably arranged on the second rotatable component, wherein the sliding sleeve is axially movable for interlocking connection to the coupling body in order to connect the first component to the second component, wherein at least one spring-loaded shift ring is mounted on the sliding sleeve so as to be non-rotatable and axially movable relative to the sliding sleeve, and wherein a damping chamber is formed in dependence upon relative movement for slowing down the axial movement, wherein the damping chamber in a region of the shift ring functions as a piston and includes at least one sealing lip.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Ruider Martin
• Isele Patrick
• Führer Kim
• Müller Marcel
• Winkel Matthias
• Brandwitte Werner Herbert
• Ventzke Klaus
• Ramos Zuniga Fernando Jesus
• Demmerer Stephan

Classifications

• F16D11/14 Primary

  with clutching members movable only axially (F16D11/02, F16D11/08 take precedence) · CPC title

• F16D2011/004

  using an internal or intermediate axially slidable sleeve, coupling both components together, whereby the intermediate sleeve is arranged internally at least with respect to one of the components · CPC title

• F16D11/10 Primary

  with clutching members movable only axially · CPC title

• F16D2011/002

  using an external and axially slidable sleeve for coupling the teeth of both coupling components together · CPC title

• F16D2300/22

  Vibration damping · CPC title