Electromagnetically shiftable positive engagement clutch

Patent metadata

Field	Value
Publication number	US-2025341237-A1
Application number	US-202519196024-A
Country	US
Kind code	A1
Filing date	May 1, 2025
Priority date	May 3, 2024
Publication date	Nov 6, 2025
Grant date	—

Abstract

An electromagnetically shiftable positive engagement clutch is shown. The positive engagement clutch has a shifting sleeve which is arranged on a shaft for joint rotation therewith and is linearly displaceable along the shaft between a clutch engagement position and a clutch disengagement position, and at least one clutch body which is aligned coaxially with the shaft. For adjustment of the shifting sleeve along the shaft, the positive engagement clutch includes a stator having at least one energized drive coil. In the clutch engagement position there is a positive engagement between the shifting sleeve and the clutch body and thus a rotary connection between the shaft and the clutch body. In addition, the positive engagement clutch includes a differential transformer sensor having coils and an electronic module, the differential transformer sensor being configured to detect the engagement position of the shifting sleeve by means of the coils. Here, the electronic module is configured to convert the output signal of the coils into a direct current signal.

First claim

1 . An electromagnetically shiftable positive engagement clutch, comprising
a shifting sleeve which is arranged on a shaft for joint rotation therewith and is linearly displaceable along the shaft between a clutch engagement position and a clutch disengagement position; at least one clutch body which is aligned coaxially with the shaft; a stator having at least one energizable drive coil for adjusting the shifting sleeve along the shaft, wherein in the clutch engagement position there is a positive engagement between the shifting sleeve and the clutch body and thus a rotary connection between the shaft and the clutch body; and a differential transformer sensor having coils and an electronic module, wherein the differential transformer sensor is configured to detect the engagement position of the shifting sleeve by means of the coils, and wherein the electronic module is configured to convert the output signal of the coils into a direct current signal.

2 . The electromagnetically shiftable positive engagement clutch according to claim 1 , wherein the coils comprise a primary coil and two secondary coils.

3 . The electromagnetically shiftable positive engagement clutch according to claim 1 , wherein the coils are planar coils arranged on a coil circuit board.

4 . The electromagnetically shiftable positive engagement clutch according to claim 3 , wherein the electronic module is arranged on a separate electronic circuit board or also on the coil circuit board.

5 . The electromagnetically shiftable positive engagement clutch according to claim 4 , wherein the electronic module is arranged on a separate electronic circuit board and the coil circuit board is arranged between the at least one drive coil and the shifting sleeve and the electronic circuit board is arranged radially outside the at least one drive coil.

6 . The electromagnetically shiftable positive engagement clutch according to claim 4 , wherein the coil circuit board and the electronic circuit board are connected to each other by means of a cable, the cable running laterally past the drive coil.

7 . The electromagnetically shiftable positive engagement clutch according to claim 1 , wherein the electromagnetic clutch comprises two differential transformer sensors which are arranged offset from each other in the circumferential direction.

8 . The electromagnetically shiftable positive engagement clutch according to claim 7 , wherein the two differential transformer sensors are offset from each other at an angle of 180 degrees.

9 . The electromagnetically shiftable positive engagement clutch according to claim 1 , wherein the differential transformer sensor is arranged in a sensor housing, the sensor housing being fastened in a transmission housing or to the stator.

10 . The electromagnetically shiftable positive engagement clutch according to claim 1 , wherein the electromagnetically shiftable positive engagement clutch is connected to a controller which is connected to the electronic module of the differential transformer sensor in terms of signaling, wherein the electronic module is configured to pass the position of the shifting sleeve as detected by the coils on to the controller by means of the converted direct current signal, and wherein the controller is configured to control a clutch engagement process based on the position of the shifting sleeve.

Assignees

• Hoerbiger Antriebstechnik Hold

Inventors

• BINDER JüRGEN
• Echtler Peter
• Dempfle Andreas
• Fuerguth Werner
• Voelk Wolfgang
• Butorin Oleg
• Kucharek Sebastian
• Lautensach Marco

Classifications

• F16D2300/18

  Sensors; Details or arrangements thereof · CPC title

• F16D27/14

  Details · CPC title

• F16D27/118 Primary

  with interengaging jaws or gear teeth · CPC title

• F16D27/108 Primary

  with axially movable clutching members · CPC title

• F16D2011/002

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