Connection of a Tubular Device to a Shaft

Patent metadata

Field	Value
Publication number	US-2016305484-A1
Application number	US-201314651199-A
Country	US
Kind code	A1
Filing date	Oct 18, 2013
Priority date	Dec 10, 2012
Publication date	Oct 20, 2016
Grant date	—

Abstract

A tubular device for connection to a shaft such that a torque can be transmitted between the tubular device and the shaft comprises a hollow receiving region configured to receive a first supporting region of the shaft, and at least one first torque-transmitting section configured to engage with at least one second torque-transmitting section of the shaft. The hollow receiving region includes at least one contact surface configured to engage at least one first supporting region of the shaft when the tubular device is radially mounted to the shaft. The at least one first torque-transmitting section includes at least one bump which, starting from the at least one first contact surface, projects into the hollow receiving region and is positioned immovably on the tubular device.

First claim

1 . A tubular device for connection to a shaft such that a torque can be transmitted between the tubular device and the shaft, comprising:
a hollow receiving region configured to receive a first supporting region of the shaft, and including at least one contact surface configured to engage at least one first supporting region of the shaft; and at least one first torque-transmitting section configured to engage with a corresponding at least one second torque-transmitting section of the shaft, the at least one first torque-transmitting section including at least one bump which, starting from the at least one contact surface, projects into the hollow receiving region and is arranged positioned immovably on the tubular device.

2 . The tubular device as claimed in claim 1 , wherein:
the at least one bump is configured as a web running along an inner circumference defined in the tubular device and in a longitudinal direction of the tubular device; and the at least one bump is formed integrally with the tubular device.

3 . The tubular device as claimed in claim 2 , wherein the at least one bump runs over at least part of an overall length of the tubular device.

4 . The tubular device as claimed in claim 2 , wherein the at least one bump comprises a main section which is at a distance from a first end side of the tubular device and has a length that runs only over part of the overall length of the tubular device.

5 . The tubular device as claimed in claim 2 , wherein:
the at least one bump, begins at a transition from a first end side to the hollow receiving region; and the transition includes a hollow.

6 . The tubular device as claimed in claim 2 , further comprising:
a groove running in the longitudinal direction of the tubular device is formed in a surface of the at least one bump facing a center axis of the tubular device, the groove running over part of a length of the at least one bump, wherein the depth of the groove is smaller than a height of the at least one bump.

7 . The tubular device as claimed in claim 6 , wherein the groove ends in a wall, wherein the wall runs in particular in a plane which lies perpendicularly to the longitudinal direction of the tubular device, and forms a stop for a securing device positioned on the shaft.

8 . The tubular device as claimed in claim 4 , wherein a ramp is formed in the main section, the ramp being inclined in a direction away from a center axis of the tubular device at an increasing distance from the first end side and merges into the at least one contact surface via a step.

9 . The tubular device as claimed in claim 2 , wherein:
the at least one contact surface has a constant diameter over a length thereof up to a region with the at least one bump; and particular as a web, and in that in particular the at least one contact surface is directly or indirectly adjoined in the longitudinal direction of the tubular device by a second contact surface having a constant diameter.

10 . The tubular device as claimed in claim 2 , wherein the at least one bump comprises at least two that are positioned on the inner circumference and divide the at least one contact surface into partial surfaces of identical size.

11 . The tubular device as claimed in claim 1 , further comprising:
at least one blocking device positioned on an inner circumference of the tubular device and configured to prevent mounting the tubular device to the shaft with a wrong orientation with respect to the shaft, the blocking device located at a first end side of the tubular device that is opposite an end of the tubular device; configured as a mounting opening.

12 . The tubular device as claimed in claim 2 , wherein:
the at least one contact surface of the hollow receiving region has a diameter of 11.8 mm; the at least one bump has a width of 4.95 mm; and the at least one bump includes diametrically opposite webs spaced apart by a distance of 8.65 mm.

13 . The tubular device as claimed in claim 4 , wherein the length of the main section has a length is 14.95 mm.

14 . The tubular device as claimed in claim 1 , wherein the tubular device is an injection molded plastics part without a mold release slope formed on the at least one contact surface.

15 . The tubular device as claimed in claim 1 , wherein the tubular device comprises a tool configured as a roller, saw or grinding wheel.

16 . The tubular device as claimed in claim 2 , wherein the at least one bump comprises at least three bumps that are positioned on the inner circumference and divide the at least one contact surface into partial surfaces of identical size.

17 . The tubular device as claimed in claim 2 , wherein the at least one bump comprises at least four bumps that are positioned on the inner circumference and divide the at least one contact surface into partial surfaces of identical size.

18 . The tubular device as claimed in claim 1 , wherein the tubular device comprises an adapter for a further tool.

Assignees

• Bosch Gmbh Robert

Inventors

• Hesse Juergen
• Lutz Tobias

Classifications

• F16D1/10

  Quick-acting couplings in which the parts are connected by simply bringing them together axially · CPC title

• F16D1/06

  for attachment of a member on a shaft or on a shaft-end (attachment of marine propellers on shafts B63H23/34) · CPC title

• F16D2001/102

  the torque is transmitted via polygon shaped connections · CPC title

• F16D2001/103

  the torque is transmitted via splined connections · CPC title

• B24B45/003 Primary

  Accessories therefor · CPC title